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authorRussell King <rmk+kernel@arm.linux.org.uk>2010-02-25 22:09:41 +0000
committerRussell King <rmk+kernel@arm.linux.org.uk>2010-02-25 22:09:41 +0000
commit2741ecb4ce5c2d430b5c44b0a169038338c21df5 (patch)
tree4aa71d7551184ee88f32c7f3660d821133058c32
parentbc85e585c6d0fab4bde12d60964b2f25802c3163 (diff)
parent5de813b6cd06460b337f9da9afe316823cf3ef45 (diff)
downloadlinux-2.6.34-ux500-2741ecb4ce5c2d430b5c44b0a169038338c21df5.tar.gz
Merge branch 'misc2' into devel
-rw-r--r--Documentation/arm/memory.txt6
-rw-r--r--arch/arm/Kconfig24
-rw-r--r--arch/arm/boot/compressed/Makefile6
-rw-r--r--arch/arm/boot/compressed/decompress.c45
-rw-r--r--arch/arm/boot/compressed/misc.c109
-rw-r--r--arch/arm/boot/compressed/vmlinux.lds.in8
-rw-r--r--arch/arm/configs/omap_4430sdp_defconfig3
-rw-r--r--arch/arm/include/asm/atomic.h228
-rw-r--r--arch/arm/include/asm/io.h11
-rw-r--r--arch/arm/include/asm/mach/time.h8
-rw-r--r--arch/arm/include/asm/memory.h23
-rw-r--r--arch/arm/include/asm/mmu.h1
-rw-r--r--arch/arm/include/asm/mmu_context.h15
-rw-r--r--arch/arm/include/asm/pgtable-nommu.h4
-rw-r--r--arch/arm/include/asm/setup.h12
-rw-r--r--arch/arm/include/asm/spinlock.h36
-rw-r--r--arch/arm/include/asm/system.h3
-rw-r--r--arch/arm/include/asm/thread_info.h3
-rw-r--r--arch/arm/kernel/Makefile1
-rw-r--r--arch/arm/kernel/leds.c115
-rw-r--r--arch/arm/kernel/ptrace.c53
-rw-r--r--arch/arm/kernel/setup.c79
-rw-r--r--arch/arm/kernel/time.c178
-rw-r--r--arch/arm/kernel/traps.c35
-rw-r--r--arch/arm/kernel/vmlinux.lds.S4
-rw-r--r--arch/arm/mach-davinci/include/mach/hardware.h2
-rw-r--r--arch/arm/mach-davinci/io.c2
-rw-r--r--arch/arm/mach-dove/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-ep93xx/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-footbridge/common.c7
-rw-r--r--arch/arm/mach-gemini/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-iop13xx/io.c7
-rw-r--r--arch/arm/mach-iop32x/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-iop33x/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-ixp2000/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-ixp23xx/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-ixp4xx/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-kirkwood/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-lh7a40x/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-loki/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-mmp/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-msm/io.c3
-rw-r--r--arch/arm/mach-mv78xx0/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-nomadik/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-ns9xxx/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-omap2/board-4430sdp.c54
-rw-r--r--arch/arm/mach-orion5x/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-pxa/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-realview/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-s3c24a0/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-sa1100/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-u300/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-ux500/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mach-w90x900/include/mach/vmalloc.h2
-rw-r--r--arch/arm/mm/Kconfig8
-rw-r--r--arch/arm/mm/alignment.c6
-rw-r--r--arch/arm/mm/cache-l2x0.c72
-rw-r--r--arch/arm/mm/context.c124
-rw-r--r--arch/arm/mm/dma-mapping.c3
-rw-r--r--arch/arm/mm/init.c113
-rw-r--r--arch/arm/mm/ioremap.c57
-rw-r--r--arch/arm/mm/mmu.c41
-rw-r--r--arch/arm/mm/nommu.c12
-rw-r--r--arch/arm/plat-iop/io.c3
-rw-r--r--arch/arm/plat-mxc/include/mach/vmalloc.h2
-rw-r--r--arch/arm/plat-omap/Kconfig1
-rw-r--r--arch/arm/plat-omap/include/plat/omap44xx.h1
-rw-r--r--arch/arm/plat-omap/io.c2
-rw-r--r--arch/arm/plat-s3c/include/mach/vmalloc.h2
-rw-r--r--arch/arm/plat-stmp3xxx/include/mach/vmalloc.h2
-rw-r--r--arch/arm/vfp/vfpmodule.c55
-rw-r--r--drivers/serial/amba-pl011.c19
72 files changed, 1092 insertions, 562 deletions
diff --git a/Documentation/arm/memory.txt b/Documentation/arm/memory.txt
index 9d58c7c5edd..eb0fae18ffb 100644
--- a/Documentation/arm/memory.txt
+++ b/Documentation/arm/memory.txt
@@ -59,7 +59,11 @@ PAGE_OFFSET high_memory-1 Kernel direct-mapped RAM region.
This maps the platforms RAM, and typically
maps all platform RAM in a 1:1 relationship.
-TASK_SIZE PAGE_OFFSET-1 Kernel module space
+PKMAP_BASE PAGE_OFFSET-1 Permanent kernel mappings
+ One way of mapping HIGHMEM pages into kernel
+ space.
+
+MODULES_VADDR MODULES_END-1 Kernel module space
Kernel modules inserted via insmod are
placed here using dynamic mappings.
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 100b90f3778..e932da03349 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -12,6 +12,7 @@ config ARM
select HAVE_IDE
select RTC_LIB
select SYS_SUPPORTS_APM_EMULATION
+ select GENERIC_ATOMIC64 if (!CPU_32v6K)
select HAVE_OPROFILE
select HAVE_ARCH_KGDB
select HAVE_KPROBES if (!XIP_KERNEL)
@@ -54,6 +55,9 @@ config HAVE_TCM
bool
select GENERIC_ALLOCATOR
+config HAVE_PROC_CPU
+ bool
+
config NO_IOPORT
bool
@@ -163,6 +167,11 @@ config ARCH_MTD_XIP
config GENERIC_HARDIRQS_NO__DO_IRQ
def_bool y
+config ARM_L1_CACHE_SHIFT_6
+ bool
+ help
+ Setting ARM L1 cache line size to 64 Bytes.
+
if OPROFILE
config OPROFILE_ARMV6
@@ -649,6 +658,7 @@ config ARCH_S5PC1XX
select GENERIC_GPIO
select HAVE_CLK
select CPU_V7
+ select ARM_L1_CACHE_SHIFT_6
help
Samsung S5PC1XX series based systems
@@ -938,6 +948,19 @@ config ARM_ERRATA_460075
ACTLR register. Note that setting specific bits in the ACTLR register
may not be available in non-secure mode.
+config PL310_ERRATA_588369
+ bool "Clean & Invalidate maintenance operations do not invalidate clean lines"
+ depends on CACHE_L2X0 && ARCH_OMAP4
+ help
+ The PL310 L2 cache controller implements three types of Clean &
+ Invalidate maintenance operations: by Physical Address
+ (offset 0x7F0), by Index/Way (0x7F8) and by Way (0x7FC).
+ They are architecturally defined to behave as the execution of a
+ clean operation followed immediately by an invalidate operation,
+ both performing to the same memory location. This functionality
+ is not correctly implemented in PL310 as clean lines are not
+ invalidated as a result of these operations. Note that this errata
+ uses Texas Instrument's secure monitor api.
endmenu
source "arch/arm/common/Kconfig"
@@ -1255,6 +1278,7 @@ config ALIGNMENT_TRAP
bool
depends on CPU_CP15_MMU
default y if !ARCH_EBSA110
+ select HAVE_PROC_CPU if PROC_FS
help
ARM processors cannot fetch/store information which is not
naturally aligned on the bus, i.e., a 4 byte fetch must start at an
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile
index 2d4d88ba73b..97c89e7de7d 100644
--- a/arch/arm/boot/compressed/Makefile
+++ b/arch/arm/boot/compressed/Makefile
@@ -5,7 +5,7 @@
#
HEAD = head.o
-OBJS = misc.o
+OBJS = misc.o decompress.o
FONTC = $(srctree)/drivers/video/console/font_acorn_8x8.c
#
@@ -106,10 +106,6 @@ lib1funcs = $(obj)/lib1funcs.o
$(obj)/lib1funcs.S: $(srctree)/arch/$(SRCARCH)/lib/lib1funcs.S FORCE
$(call cmd,shipped)
-# Don't allow any static data in misc.o, which
-# would otherwise mess up our GOT table
-CFLAGS_misc.o := -Dstatic=
-
$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/$(HEAD) $(obj)/piggy.$(suffix_y).o \
$(addprefix $(obj)/, $(OBJS)) $(lib1funcs) FORCE
$(call if_changed,ld)
diff --git a/arch/arm/boot/compressed/decompress.c b/arch/arm/boot/compressed/decompress.c
new file mode 100644
index 00000000000..0da382f3315
--- /dev/null
+++ b/arch/arm/boot/compressed/decompress.c
@@ -0,0 +1,45 @@
+#define _LINUX_STRING_H_
+
+#include <linux/compiler.h> /* for inline */
+#include <linux/types.h> /* for size_t */
+#include <linux/stddef.h> /* for NULL */
+#include <linux/linkage.h>
+#include <asm/string.h>
+
+extern unsigned long free_mem_ptr;
+extern unsigned long free_mem_end_ptr;
+extern void error(char *);
+
+#define STATIC static
+
+#define ARCH_HAS_DECOMP_WDOG
+
+/* Diagnostic functions */
+#ifdef DEBUG
+# define Assert(cond,msg) {if(!(cond)) error(msg);}
+# define Trace(x) fprintf x
+# define Tracev(x) {if (verbose) fprintf x ;}
+# define Tracevv(x) {if (verbose>1) fprintf x ;}
+# define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
+# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
+#else
+# define Assert(cond,msg)
+# define Trace(x)
+# define Tracev(x)
+# define Tracevv(x)
+# define Tracec(c,x)
+# define Tracecv(c,x)
+#endif
+
+#ifdef CONFIG_KERNEL_GZIP
+#include "../../../../lib/decompress_inflate.c"
+#endif
+
+#ifdef CONFIG_KERNEL_LZO
+#include "../../../../lib/decompress_unlzo.c"
+#endif
+
+void do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x))
+{
+ decompress(input, len, NULL, NULL, output, NULL, error);
+}
diff --git a/arch/arm/boot/compressed/misc.c b/arch/arm/boot/compressed/misc.c
index 56a0d116d27..d32bc71c1f7 100644
--- a/arch/arm/boot/compressed/misc.c
+++ b/arch/arm/boot/compressed/misc.c
@@ -23,8 +23,8 @@ unsigned int __machine_arch_type;
#include <linux/compiler.h> /* for inline */
#include <linux/types.h> /* for size_t */
#include <linux/stddef.h> /* for NULL */
-#include <asm/string.h>
#include <linux/linkage.h>
+#include <asm/string.h>
#include <asm/unaligned.h>
@@ -117,57 +117,7 @@ static void putstr(const char *ptr)
#endif
-#define __ptr_t void *
-
-#define memzero(s,n) __memzero(s,n)
-
-/*
- * Optimised C version of memzero for the ARM.
- */
-void __memzero (__ptr_t s, size_t n)
-{
- union { void *vp; unsigned long *ulp; unsigned char *ucp; } u;
- int i;
-
- u.vp = s;
-
- for (i = n >> 5; i > 0; i--) {
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- }
-
- if (n & 1 << 4) {
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- }
-
- if (n & 1 << 3) {
- *u.ulp++ = 0;
- *u.ulp++ = 0;
- }
-
- if (n & 1 << 2)
- *u.ulp++ = 0;
-
- if (n & 1 << 1) {
- *u.ucp++ = 0;
- *u.ucp++ = 0;
- }
-
- if (n & 1)
- *u.ucp++ = 0;
-}
-
-static inline __ptr_t memcpy(__ptr_t __dest, __const __ptr_t __src,
- size_t __n)
+void *memcpy(void *__dest, __const void *__src, size_t __n)
{
int i = 0;
unsigned char *d = (unsigned char *)__dest, *s = (unsigned char *)__src;
@@ -204,59 +154,20 @@ static inline __ptr_t memcpy(__ptr_t __dest, __const __ptr_t __src,
/*
* gzip delarations
*/
-#define STATIC static
-
-/* Diagnostic functions */
-#ifdef DEBUG
-# define Assert(cond,msg) {if(!(cond)) error(msg);}
-# define Trace(x) fprintf x
-# define Tracev(x) {if (verbose) fprintf x ;}
-# define Tracevv(x) {if (verbose>1) fprintf x ;}
-# define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
-# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
-#else
-# define Assert(cond,msg)
-# define Trace(x)
-# define Tracev(x)
-# define Tracevv(x)
-# define Tracec(c,x)
-# define Tracecv(c,x)
-#endif
-
-static void error(char *m);
-
extern char input_data[];
extern char input_data_end[];
-static unsigned char *output_data;
-static unsigned long output_ptr;
-
-static void error(char *m);
+unsigned char *output_data;
+unsigned long output_ptr;
-static void putstr(const char *);
-
-static unsigned long free_mem_ptr;
-static unsigned long free_mem_end_ptr;
-
-#ifdef STANDALONE_DEBUG
-#define NO_INFLATE_MALLOC
-#endif
-
-#define ARCH_HAS_DECOMP_WDOG
-
-#ifdef CONFIG_KERNEL_GZIP
-#include "../../../../lib/decompress_inflate.c"
-#endif
-
-#ifdef CONFIG_KERNEL_LZO
-#include "../../../../lib/decompress_unlzo.c"
-#endif
+unsigned long free_mem_ptr;
+unsigned long free_mem_end_ptr;
#ifndef arch_error
#define arch_error(x)
#endif
-static void error(char *x)
+void error(char *x)
{
arch_error(x);
@@ -272,6 +183,8 @@ asmlinkage void __div0(void)
error("Attempting division by 0!");
}
+extern void do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x));
+
#ifndef STANDALONE_DEBUG
unsigned long
@@ -292,8 +205,8 @@ decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p,
output_ptr = get_unaligned_le32(tmp);
putstr("Uncompressing Linux...");
- decompress(input_data, input_data_end - input_data,
- NULL, NULL, output_data, NULL, error);
+ do_decompress(input_data, input_data_end - input_data,
+ output_data, error);
putstr(" done, booting the kernel.\n");
return output_ptr;
}
diff --git a/arch/arm/boot/compressed/vmlinux.lds.in b/arch/arm/boot/compressed/vmlinux.lds.in
index a5924b9b88b..7ca9ecff652 100644
--- a/arch/arm/boot/compressed/vmlinux.lds.in
+++ b/arch/arm/boot/compressed/vmlinux.lds.in
@@ -14,6 +14,13 @@ SECTIONS
/DISCARD/ : {
*(.ARM.exidx*)
*(.ARM.extab*)
+ /*
+ * Discard any r/w data - this produces a link error if we have any,
+ * which is required for PIC decompression. Local data generates
+ * GOTOFF relocations, which prevents it being relocated independently
+ * of the text/got segments.
+ */
+ *(.data)
}
. = TEXT_START;
@@ -40,7 +47,6 @@ SECTIONS
.got : { *(.got) }
_got_end = .;
.got.plt : { *(.got.plt) }
- .data : { *(.data) }
_edata = .;
. = BSS_START;
diff --git a/arch/arm/configs/omap_4430sdp_defconfig b/arch/arm/configs/omap_4430sdp_defconfig
index 3de640ac294..c48d7b89386 100644
--- a/arch/arm/configs/omap_4430sdp_defconfig
+++ b/arch/arm/configs/omap_4430sdp_defconfig
@@ -242,10 +242,13 @@ CONFIG_CPU_CP15_MMU=y
# CONFIG_CPU_DCACHE_DISABLE is not set
# CONFIG_CPU_BPREDICT_DISABLE is not set
CONFIG_HAS_TLS_REG=y
+CONFIG_OUTER_CACHE=y
+CONFIG_CACHE_L2X0=y
CONFIG_ARM_L1_CACHE_SHIFT=5
# CONFIG_ARM_ERRATA_430973 is not set
# CONFIG_ARM_ERRATA_458693 is not set
# CONFIG_ARM_ERRATA_460075 is not set
+CONFIG_PL310_ERRATA_588369=y
CONFIG_ARM_GIC=y
#
diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h
index d0daeab2234..e8ddec2cb15 100644
--- a/arch/arm/include/asm/atomic.h
+++ b/arch/arm/include/asm/atomic.h
@@ -235,6 +235,234 @@ static inline int atomic_add_unless(atomic_t *v, int a, int u)
#define smp_mb__before_atomic_inc() smp_mb()
#define smp_mb__after_atomic_inc() smp_mb()
+#ifndef CONFIG_GENERIC_ATOMIC64
+typedef struct {
+ u64 __aligned(8) counter;
+} atomic64_t;
+
+#define ATOMIC64_INIT(i) { (i) }
+
+static inline u64 atomic64_read(atomic64_t *v)
+{
+ u64 result;
+
+ __asm__ __volatile__("@ atomic64_read\n"
+" ldrexd %0, %H0, [%1]"
+ : "=&r" (result)
+ : "r" (&v->counter)
+ );
+
+ return result;
+}
+
+static inline void atomic64_set(atomic64_t *v, u64 i)
+{
+ u64 tmp;
+
+ __asm__ __volatile__("@ atomic64_set\n"
+"1: ldrexd %0, %H0, [%1]\n"
+" strexd %0, %2, %H2, [%1]\n"
+" teq %0, #0\n"
+" bne 1b"
+ : "=&r" (tmp)
+ : "r" (&v->counter), "r" (i)
+ : "cc");
+}
+
+static inline void atomic64_add(u64 i, atomic64_t *v)
+{
+ u64 result;
+ unsigned long tmp;
+
+ __asm__ __volatile__("@ atomic64_add\n"
+"1: ldrexd %0, %H0, [%2]\n"
+" adds %0, %0, %3\n"
+" adc %H0, %H0, %H3\n"
+" strexd %1, %0, %H0, [%2]\n"
+" teq %1, #0\n"
+" bne 1b"
+ : "=&r" (result), "=&r" (tmp)
+ : "r" (&v->counter), "r" (i)
+ : "cc");
+}
+
+static inline u64 atomic64_add_return(u64 i, atomic64_t *v)
+{
+ u64 result;
+ unsigned long tmp;
+
+ smp_mb();
+
+ __asm__ __volatile__("@ atomic64_add_return\n"
+"1: ldrexd %0, %H0, [%2]\n"
+" adds %0, %0, %3\n"
+" adc %H0, %H0, %H3\n"
+" strexd %1, %0, %H0, [%2]\n"
+" teq %1, #0\n"
+" bne 1b"
+ : "=&r" (result), "=&r" (tmp)
+ : "r" (&v->counter), "r" (i)
+ : "cc");
+
+ smp_mb();
+
+ return result;
+}
+
+static inline void atomic64_sub(u64 i, atomic64_t *v)
+{
+ u64 result;
+ unsigned long tmp;
+
+ __asm__ __volatile__("@ atomic64_sub\n"
+"1: ldrexd %0, %H0, [%2]\n"
+" subs %0, %0, %3\n"
+" sbc %H0, %H0, %H3\n"
+" strexd %1, %0, %H0, [%2]\n"
+" teq %1, #0\n"
+" bne 1b"
+ : "=&r" (result), "=&r" (tmp)
+ : "r" (&v->counter), "r" (i)
+ : "cc");
+}
+
+static inline u64 atomic64_sub_return(u64 i, atomic64_t *v)
+{
+ u64 result;
+ unsigned long tmp;
+
+ smp_mb();
+
+ __asm__ __volatile__("@ atomic64_sub_return\n"
+"1: ldrexd %0, %H0, [%2]\n"
+" subs %0, %0, %3\n"
+" sbc %H0, %H0, %H3\n"
+" strexd %1, %0, %H0, [%2]\n"
+" teq %1, #0\n"
+" bne 1b"
+ : "=&r" (result), "=&r" (tmp)
+ : "r" (&v->counter), "r" (i)
+ : "cc");
+
+ smp_mb();
+
+ return result;
+}
+
+static inline u64 atomic64_cmpxchg(atomic64_t *ptr, u64 old, u64 new)
+{
+ u64 oldval;
+ unsigned long res;
+
+ smp_mb();
+
+ do {
+ __asm__ __volatile__("@ atomic64_cmpxchg\n"
+ "ldrexd %1, %H1, [%2]\n"
+ "mov %0, #0\n"
+ "teq %1, %3\n"
+ "teqeq %H1, %H3\n"
+ "strexdeq %0, %4, %H4, [%2]"
+ : "=&r" (res), "=&r" (oldval)
+ : "r" (&ptr->counter), "r" (old), "r" (new)
+ : "cc");
+ } while (res);
+
+ smp_mb();
+
+ return oldval;
+}
+
+static inline u64 atomic64_xchg(atomic64_t *ptr, u64 new)
+{
+ u64 result;
+ unsigned long tmp;
+
+ smp_mb();
+
+ __asm__ __volatile__("@ atomic64_xchg\n"
+"1: ldrexd %0, %H0, [%2]\n"
+" strexd %1, %3, %H3, [%2]\n"
+" teq %1, #0\n"
+" bne 1b"
+ : "=&r" (result), "=&r" (tmp)
+ : "r" (&ptr->counter), "r" (new)
+ : "cc");
+
+ smp_mb();
+
+ return result;
+}
+
+static inline u64 atomic64_dec_if_positive(atomic64_t *v)
+{
+ u64 result;
+ unsigned long tmp;
+
+ smp_mb();
+
+ __asm__ __volatile__("@ atomic64_dec_if_positive\n"
+"1: ldrexd %0, %H0, [%2]\n"
+" subs %0, %0, #1\n"
+" sbc %H0, %H0, #0\n"
+" teq %H0, #0\n"
+" bmi 2f\n"
+" strexd %1, %0, %H0, [%2]\n"
+" teq %1, #0\n"
+" bne 1b\n"
+"2:"
+ : "=&r" (result), "=&r" (tmp)
+ : "r" (&v->counter)
+ : "cc");
+
+ smp_mb();
+
+ return result;
+}
+
+static inline int atomic64_add_unless(atomic64_t *v, u64 a, u64 u)
+{
+ u64 val;
+ unsigned long tmp;
+ int ret = 1;
+
+ smp_mb();
+
+ __asm__ __volatile__("@ atomic64_add_unless\n"
+"1: ldrexd %0, %H0, [%3]\n"
+" teq %0, %4\n"
+" teqeq %H0, %H4\n"
+" moveq %1, #0\n"
+" beq 2f\n"
+" adds %0, %0, %5\n"
+" adc %H0, %H0, %H5\n"
+" strexd %2, %0, %H0, [%3]\n"
+" teq %2, #0\n"
+" bne 1b\n"
+"2:"
+ : "=&r" (val), "=&r" (ret), "=&r" (tmp)
+ : "r" (&v->counter), "r" (u), "r" (a)
+ : "cc");
+
+ if (ret)
+ smp_mb();
+
+ return ret;
+}
+
+#define atomic64_add_negative(a, v) (atomic64_add_return((a), (v)) < 0)
+#define atomic64_inc(v) atomic64_add(1LL, (v))
+#define atomic64_inc_return(v) atomic64_add_return(1LL, (v))
+#define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0)
+#define atomic64_sub_and_test(a, v) (atomic64_sub_return((a), (v)) == 0)
+#define atomic64_dec(v) atomic64_sub(1LL, (v))
+#define atomic64_dec_return(v) atomic64_sub_return(1LL, (v))
+#define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0)
+#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1LL, 0LL)
+
+#else /* !CONFIG_GENERIC_ATOMIC64 */
+#include <asm-generic/atomic64.h>
+#endif
#include <asm-generic/atomic-long.h>
#endif
#endif
diff --git a/arch/arm/include/asm/io.h b/arch/arm/include/asm/io.h
index d2a59cfc30c..c980156f326 100644
--- a/arch/arm/include/asm/io.h
+++ b/arch/arm/include/asm/io.h
@@ -69,9 +69,16 @@ extern void __raw_readsl(const void __iomem *addr, void *data, int longlen);
/*
* __arm_ioremap takes CPU physical address.
* __arm_ioremap_pfn takes a Page Frame Number and an offset into that page
+ * The _caller variety takes a __builtin_return_address(0) value for
+ * /proc/vmalloc to use - and should only be used in non-inline functions.
*/
-extern void __iomem * __arm_ioremap_pfn(unsigned long, unsigned long, size_t, unsigned int);
-extern void __iomem * __arm_ioremap(unsigned long, size_t, unsigned int);
+extern void __iomem *__arm_ioremap_pfn_caller(unsigned long, unsigned long,
+ size_t, unsigned int, void *);
+extern void __iomem *__arm_ioremap_caller(unsigned long, size_t, unsigned int,
+ void *);
+
+extern void __iomem *__arm_ioremap_pfn(unsigned long, unsigned long, size_t, unsigned int);
+extern void __iomem *__arm_ioremap(unsigned long, size_t, unsigned int);
extern void __iounmap(volatile void __iomem *addr);
/*
diff --git a/arch/arm/include/asm/mach/time.h b/arch/arm/include/asm/mach/time.h
index b2cc1fcd040..8bffc3ff3ac 100644
--- a/arch/arm/include/asm/mach/time.h
+++ b/arch/arm/include/asm/mach/time.h
@@ -46,12 +46,4 @@ struct sys_timer {
extern struct sys_timer *system_timer;
extern void timer_tick(void);
-/*
- * Kernel time keeping support.
- */
-struct timespec;
-extern int (*set_rtc)(void);
-extern void save_time_delta(struct timespec *delta, struct timespec *rtc);
-extern void restore_time_delta(struct timespec *delta, struct timespec *rtc);
-
#endif
diff --git a/arch/arm/include/asm/memory.h b/arch/arm/include/asm/memory.h
index 5421d82a257..4312ee5e3d0 100644
--- a/arch/arm/include/asm/memory.h
+++ b/arch/arm/include/asm/memory.h
@@ -76,6 +76,17 @@
*/
#define IOREMAP_MAX_ORDER 24
+/*
+ * Size of DMA-consistent memory region. Must be multiple of 2M,
+ * between 2MB and 14MB inclusive.
+ */
+#ifndef CONSISTENT_DMA_SIZE
+#define CONSISTENT_DMA_SIZE SZ_2M
+#endif
+
+#define CONSISTENT_END (0xffe00000UL)
+#define CONSISTENT_BASE (CONSISTENT_END - CONSISTENT_DMA_SIZE)
+
#else /* CONFIG_MMU */
/*
@@ -93,11 +104,11 @@
#endif
#ifndef PHYS_OFFSET
-#define PHYS_OFFSET (CONFIG_DRAM_BASE)
+#define PHYS_OFFSET UL(CONFIG_DRAM_BASE)
#endif
#ifndef END_MEM
-#define END_MEM (CONFIG_DRAM_BASE + CONFIG_DRAM_SIZE)
+#define END_MEM (UL(CONFIG_DRAM_BASE) + CONFIG_DRAM_SIZE)
#endif
#ifndef PAGE_OFFSET
@@ -113,14 +124,6 @@
#endif /* !CONFIG_MMU */
/*
- * Size of DMA-consistent memory region. Must be multiple of 2M,
- * between 2MB and 14MB inclusive.
- */
-#ifndef CONSISTENT_DMA_SIZE
-#define CONSISTENT_DMA_SIZE SZ_2M
-#endif
-
-/*
* Physical vs virtual RAM address space conversion. These are
* private definitions which should NOT be used outside memory.h
* files. Use virt_to_phys/phys_to_virt/__pa/__va instead.
diff --git a/arch/arm/include/asm/mmu.h b/arch/arm/include/asm/mmu.h
index b561584d04a..68870c77667 100644
--- a/arch/arm/include/asm/mmu.h
+++ b/arch/arm/include/asm/mmu.h
@@ -6,6 +6,7 @@
typedef struct {
#ifdef CONFIG_CPU_HAS_ASID
unsigned int id;
+ spinlock_t id_lock;
#endif
unsigned int kvm_seq;
} mm_context_t;
diff --git a/arch/arm/include/asm/mmu_context.h b/arch/arm/include/asm/mmu_context.h
index de6cefb329d..a0b3cac0547 100644
--- a/arch/arm/include/asm/mmu_context.h
+++ b/arch/arm/include/asm/mmu_context.h
@@ -43,12 +43,23 @@ void __check_kvm_seq(struct mm_struct *mm);
#define ASID_FIRST_VERSION (1 << ASID_BITS)
extern unsigned int cpu_last_asid;
+#ifdef CONFIG_SMP
+DECLARE_PER_CPU(struct mm_struct *, current_mm);
+#endif
void __init_new_context(struct task_struct *tsk, struct mm_struct *mm);
void __new_context(struct mm_struct *mm);
static inline void check_context(struct mm_struct *mm)
{
+ /*
+ * This code is executed with interrupts enabled. Therefore,
+ * mm->context.id cannot be updated to the latest ASID version
+ * on a different CPU (and condition below not triggered)
+ * without first getting an IPI to reset the context. The
+ * alternative is to take a read_lock on mm->context.id_lock
+ * (after changing its type to rwlock_t).
+ */
if (unlikely((mm->context.id ^ cpu_last_asid) >> ASID_BITS))
__new_context(mm);
@@ -108,6 +119,10 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next,
__flush_icache_all();
#endif
if (!cpumask_test_and_set_cpu(cpu, mm_cpumask(next)) || prev != next) {
+#ifdef CONFIG_SMP
+ struct mm_struct **crt_mm = &per_cpu(current_mm, cpu);
+ *crt_mm = next;
+#endif
check_context(next);
cpu_switch_mm(next->pgd, next);
if (cache_is_vivt())
diff --git a/arch/arm/include/asm/pgtable-nommu.h b/arch/arm/include/asm/pgtable-nommu.h
index b011f2e939a..013cfcdc483 100644
--- a/arch/arm/include/asm/pgtable-nommu.h
+++ b/arch/arm/include/asm/pgtable-nommu.h
@@ -86,8 +86,8 @@ extern unsigned int kobjsize(const void *objp);
* All 32bit addresses are effectively valid for vmalloc...
* Sort of meaningless for non-VM targets.
*/
-#define VMALLOC_START 0
-#define VMALLOC_END 0xffffffff
+#define VMALLOC_START 0UL
+#define VMALLOC_END 0xffffffffUL
#define FIRST_USER_ADDRESS (0)
diff --git a/arch/arm/include/asm/setup.h b/arch/arm/include/asm/setup.h
index 5ccce0a9b03..f392fb4437a 100644
--- a/arch/arm/include/asm/setup.h
+++ b/arch/arm/include/asm/setup.h
@@ -223,18 +223,6 @@ extern struct meminfo meminfo;
#define bank_phys_end(bank) ((bank)->start + (bank)->size)
#define bank_phys_size(bank) (bank)->size
-/*
- * Early command line parameters.
- */
-struct early_params {
- const char *arg;
- void (*fn)(char **p);
-};
-
-#define __early_param(name,fn) \
-static struct early_params __early_##fn __used \
-__attribute__((__section__(".early_param.init"))) = { name, fn }
-
#endif /* __KERNEL__ */
#endif
diff --git a/arch/arm/include/asm/spinlock.h b/arch/arm/include/asm/spinlock.h
index c91c64cab92..17eb355707d 100644
--- a/arch/arm/include/asm/spinlock.h
+++ b/arch/arm/include/asm/spinlock.h
@@ -5,6 +5,22 @@
#error SMP not supported on pre-ARMv6 CPUs
#endif
+static inline void dsb_sev(void)
+{
+#if __LINUX_ARM_ARCH__ >= 7
+ __asm__ __volatile__ (
+ "dsb\n"
+ "sev"
+ );
+#elif defined(CONFIG_CPU_32v6K)
+ __asm__ __volatile__ (
+ "mcr p15, 0, %0, c7, c10, 4\n"
+ "sev"
+ : : "r" (0)
+ );
+#endif
+}
+
/*
* ARMv6 Spin-locking.
*
@@ -69,13 +85,11 @@ static inline void arch_spin_unlock(arch_spinlock_t *lock)
__asm__ __volatile__(
" str %1, [%0]\n"
-#ifdef CONFIG_CPU_32v6K
-" mcr p15, 0, %1, c7, c10, 4\n" /* DSB */
-" sev"
-#endif
:
: "r" (&lock->lock), "r" (0)
: "cc");
+
+ dsb_sev();
}
/*
@@ -132,13 +146,11 @@ static inline void arch_write_unlock(arch_rwlock_t *rw)
__asm__ __volatile__(
"str %1, [%0]\n"
-#ifdef CONFIG_CPU_32v6K
-" mcr p15, 0, %1, c7, c10, 4\n" /* DSB */
-" sev\n"
-#endif
:
: "r" (&rw->lock), "r" (0)
: "cc");
+
+ dsb_sev();
}
/* write_can_lock - would write_trylock() succeed? */
@@ -188,14 +200,12 @@ static inline void arch_read_unlock(arch_rwlock_t *rw)
" strex %1, %0, [%2]\n"
" teq %1, #0\n"
" bne 1b"
-#ifdef CONFIG_CPU_32v6K
-"\n cmp %0, #0\n"
-" mcreq p15, 0, %0, c7, c10, 4\n"
-" seveq"
-#endif
: "=&r" (tmp), "=&r" (tmp2)
: "r" (&rw->lock)
: "cc");
+
+ if (tmp == 0)
+ dsb_sev();
}
static inline int arch_read_trylock(arch_rwlock_t *rw)
diff --git a/arch/arm/include/asm/system.h b/arch/arm/include/asm/system.h
index 058e7e90881..ca88e6a8470 100644
--- a/arch/arm/include/asm/system.h
+++ b/arch/arm/include/asm/system.h
@@ -73,8 +73,7 @@ extern unsigned int mem_fclk_21285;
struct pt_regs;
-void die(const char *msg, struct pt_regs *regs, int err)
- __attribute__((noreturn));
+void die(const char *msg, struct pt_regs *regs, int err);
struct siginfo;
void arm_notify_die(const char *str, struct pt_regs *regs, struct siginfo *info,
diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
index 2dfb7d7a66e..b74970ec02c 100644
--- a/arch/arm/include/asm/thread_info.h
+++ b/arch/arm/include/asm/thread_info.h
@@ -115,7 +115,8 @@ extern void iwmmxt_task_restore(struct thread_info *, void *);
extern void iwmmxt_task_release(struct thread_info *);
extern void iwmmxt_task_switch(struct thread_info *);
-extern void vfp_sync_state(struct thread_info *thread);
+extern void vfp_sync_hwstate(struct thread_info *);
+extern void vfp_flush_hwstate(struct thread_info *);
#endif
diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile
index c76e6d2679b..26d302c28e1 100644
--- a/arch/arm/kernel/Makefile
+++ b/arch/arm/kernel/Makefile
@@ -17,6 +17,7 @@ obj-y := compat.o elf.o entry-armv.o entry-common.o irq.o \
process.o ptrace.o return_address.o setup.o signal.o \
sys_arm.o stacktrace.o time.o traps.o
+obj-$(CONFIG_LEDS) += leds.o
obj-$(CONFIG_OC_ETM) += etm.o
obj-$(CONFIG_ISA_DMA_API) += dma.o
diff --git a/arch/arm/kernel/leds.c b/arch/arm/kernel/leds.c
new file mode 100644
index 00000000000..31a316c1777
--- /dev/null
+++ b/arch/arm/kernel/leds.c
@@ -0,0 +1,115 @@
+/*
+ * LED support code, ripped out of arch/arm/kernel/time.c
+ *
+ * Copyright (C) 1994-2001 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/sysdev.h>
+
+#include <asm/leds.h>
+
+static void dummy_leds_event(led_event_t evt)
+{
+}
+
+void (*leds_event)(led_event_t) = dummy_leds_event;
+
+struct leds_evt_name {
+ const char name[8];
+ int on;
+ int off;
+};
+
+static const struct leds_evt_name evt_names[] = {
+ { "amber", led_amber_on, led_amber_off },
+ { "blue", led_blue_on, led_blue_off },
+ { "green", led_green_on, led_green_off },
+ { "red", led_red_on, led_red_off },
+};
+
+static ssize_t leds_store(struct sys_device *dev,
+ struct sysdev_attribute *attr,
+ const char *buf, size_t size)
+{
+ int ret = -EINVAL, len = strcspn(buf, " ");
+
+ if (len > 0 && buf[len] == '\0')
+ len--;
+
+ if (strncmp(buf, "claim", len) == 0) {
+ leds_event(led_claim);
+ ret = size;
+ } else if (strncmp(buf, "release", len) == 0) {
+ leds_event(led_release);
+ ret = size;
+ } else {
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(evt_names); i++) {
+ if (strlen(evt_names[i].name) != len ||
+ strncmp(buf, evt_names[i].name, len) != 0)
+ continue;
+ if (strncmp(buf+len, " on", 3) == 0) {
+ leds_event(evt_names[i].on);
+ ret = size;
+ } else if (strncmp(buf+len, " off", 4) == 0) {
+ leds_event(evt_names[i].off);
+ ret = size;
+ }
+ break;
+ }
+ }
+ return ret;
+}
+
+static SYSDEV_ATTR(event, 0200, NULL, leds_store);
+
+static int leds_suspend(struct sys_device *dev, pm_message_t state)
+{
+ leds_event(led_stop);
+ return 0;
+}
+
+static int leds_resume(struct sys_device *dev)
+{
+ leds_event(led_start);
+ return 0;
+}
+
+static int leds_shutdown(struct sys_device *dev)
+{
+ leds_event(led_halted);
+ return 0;
+}
+
+static struct sysdev_class leds_sysclass = {
+ .name = "leds",
+ .shutdown = leds_shutdown,
+ .suspend = leds_suspend,
+ .resume = leds_resume,
+};
+
+static struct sys_device leds_device = {
+ .id = 0,
+ .cls = &leds_sysclass,
+};
+
+static int __init leds_init(void)
+{
+ int ret;
+ ret = sysdev_class_register(&leds_sysclass);
+ if (ret == 0)
+ ret = sysdev_register(&leds_device);
+ if (ret == 0)
+ ret = sysdev_create_file(&leds_device, &attr_event);
+ return ret;
+}
+
+device_initcall(leds_init);
+
+EXPORT_SYMBOL(leds_event);
diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
index a2ea3854cb3..08f899fb76a 100644
--- a/arch/arm/kernel/ptrace.c
+++ b/arch/arm/kernel/ptrace.c
@@ -499,10 +499,41 @@ static struct undef_hook thumb_break_hook = {
.fn = break_trap,
};
+static int thumb2_break_trap(struct pt_regs *regs, unsigned int instr)
+{
+ unsigned int instr2;
+ void __user *pc;
+
+ /* Check the second half of the instruction. */
+ pc = (void __user *)(instruction_pointer(regs) + 2);
+
+ if (processor_mode(regs) == SVC_MODE) {
+ instr2 = *(u16 *) pc;
+ } else {
+ get_user(instr2, (u16 __user *)pc);
+ }
+
+ if (instr2 == 0xa000) {
+ ptrace_break(current, regs);
+ return 0;
+ } else {
+ return 1;
+ }
+}
+
+static struct undef_hook thumb2_break_hook = {
+ .instr_mask = 0xffff,
+ .instr_val = 0xf7f0,
+ .cpsr_mask = PSR_T_BIT,
+ .cpsr_val = PSR_T_BIT,
+ .fn = thumb2_break_trap,
+};
+
static int __init ptrace_break_init(void)
{
register_undef_hook(&arm_break_hook);
register_undef_hook(&thumb_break_hook);
+ register_undef_hook(&thumb2_break_hook);
return 0;
}
@@ -669,7 +700,7 @@ static int ptrace_getvfpregs(struct task_struct *tsk, void __user *data)
union vfp_state *vfp = &thread->vfpstate;
struct user_vfp __user *ufp = data;
- vfp_sync_state(thread);
+ vfp_sync_hwstate(thread);
/* copy the floating point registers */
if (copy_to_user(&ufp->fpregs, &vfp->hard.fpregs,
@@ -692,7 +723,7 @@ static int ptrace_setvfpregs(struct task_struct *tsk, void __user *data)
union vfp_state *vfp = &thread->vfpstate;
struct user_vfp __user *ufp = data;
- vfp_sync_state(thread);
+ vfp_sync_hwstate(thread);
/* copy the floating point registers */
if (copy_from_user(&vfp->hard.fpregs, &ufp->fpregs,
@@ -703,6 +734,8 @@ static int ptrace_setvfpregs(struct task_struct *tsk, void __user *data)
if (get_user(vfp->hard.fpscr, &ufp->fpscr))
return -EFAULT;
+ vfp_flush_hwstate(thread);
+
return 0;
}
#endif
@@ -712,26 +745,10 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
int ret;
switch (request) {
- /*
- * read word at location "addr" in the child process.
- */
- case PTRACE_PEEKTEXT:
- case PTRACE_PEEKDATA:
- ret = generic_ptrace_peekdata(child, addr, data);
- break;
-
case PTRACE_PEEKUSR:
ret = ptrace_read_user(child, addr, (unsigned long __user *)data);
break;
- /*
- * write the word at location addr.
- */
- case PTRACE_POKETEXT:
- case PTRACE_POKEDATA:
- ret = generic_ptrace_pokedata(child, addr, data);
- break;
-
case PTRACE_POKEUSR:
ret = ptrace_write_user(child, addr, data);
break;
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index c6c57b640b6..baf5959d639 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -24,6 +24,7 @@
#include <linux/interrupt.h>
#include <linux/smp.h>
#include <linux/fs.h>
+#include <linux/proc_fs.h>
#include <asm/unified.h>
#include <asm/cpu.h>
@@ -117,7 +118,7 @@ EXPORT_SYMBOL(elf_platform);
static const char *cpu_name;
static const char *machine_name;
-static char __initdata command_line[COMMAND_LINE_SIZE];
+static char __initdata cmd_line[COMMAND_LINE_SIZE];
static char default_command_line[COMMAND_LINE_SIZE] __initdata = CONFIG_CMDLINE;
static union { char c[4]; unsigned long l; } endian_test __initdata = { { 'l', '?', '?', 'b' } };
@@ -417,10 +418,11 @@ static int __init arm_add_memory(unsigned long start, unsigned long size)
* Pick out the memory size. We look for mem=size@start,
* where start and size are "size[KkMm]"
*/
-static void __init early_mem(char **p)
+static int __init early_mem(char *p)
{
static int usermem __initdata = 0;
unsigned long size, start;
+ char *endp;
/*
* If the user specifies memory size, we
@@ -433,52 +435,15 @@ static void __init early_mem(char **p)
}
start = PHYS_OFFSET;
- size = memparse(*p, p);
- if (**p == '@')
- start = memparse(*p + 1, p);
+ size = memparse(p, &endp);
+ if (*endp == '@')
+ start = memparse(endp + 1, NULL);
arm_add_memory(start, size);
-}
-__early_param("mem=", early_mem);
-/*
- * Initial parsing of the command line.
- */
-static void __init parse_cmdline(char **cmdline_p, char *from)
-{
- char c = ' ', *to = command_line;
- int len = 0;
-
- for (;;) {
- if (c == ' ') {
- extern struct early_params __early_begin, __early_end;
- struct early_params *p;
-
- for (p = &__early_begin; p < &__early_end; p++) {
- int arglen = strlen(p->arg);
-
- if (memcmp(from, p->arg, arglen) == 0) {
- if (to != command_line)
- to -= 1;
- from += arglen;
- p->fn(&from);
-
- while (*from != ' ' && *from != '\0')
- from++;
- break;
- }
- }
- }
- c = *from++;
- if (!c)
- break;
- if (COMMAND_LINE_SIZE <= ++len)
- break;
- *to++ = c;
- }
- *to = '\0';
- *cmdline_p = command_line;
+ return 0;
}
+early_param("mem", early_mem);
static void __init
setup_ramdisk(int doload, int prompt, int image_start, unsigned int rd_sz)
@@ -739,9 +704,15 @@ void __init setup_arch(char **cmdline_p)
init_mm.end_data = (unsigned long) _edata;
init_mm.brk = (unsigned long) _end;
- memcpy(boot_command_line, from, COMMAND_LINE_SIZE);
- boot_command_line[COMMAND_LINE_SIZE-1] = '\0';
- parse_cmdline(cmdline_p, from);
+ /* parse_early_param needs a boot_command_line */
+ strlcpy(boot_command_line, from, COMMAND_LINE_SIZE);
+
+ /* populate cmd_line too for later use, preserving boot_command_line */
+ strlcpy(cmd_line, boot_command_line, COMMAND_LINE_SIZE);
+ *cmdline_p = cmd_line;
+
+ parse_early_param();
+
paging_init(mdesc);
request_standard_resources(&meminfo, mdesc);
@@ -782,9 +753,21 @@ static int __init topology_init(void)
return 0;
}
-
subsys_initcall(topology_init);
+#ifdef CONFIG_HAVE_PROC_CPU
+static int __init proc_cpu_init(void)
+{
+ struct proc_dir_entry *res;
+
+ res = proc_mkdir("cpu", NULL);
+ if (!res)
+ return -ENOMEM;
+ return 0;
+}
+fs_initcall(proc_cpu_init);
+#endif
+
static const char *hwcap_str[] = {
"swp",
"half",
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index d38cdf2c827..28753805d2d 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -10,11 +10,6 @@
*
* This file contains the ARM-specific time handling details:
* reading the RTC at bootup, etc...
- *
- * 1994-07-02 Alan Modra
- * fixed set_rtc_mmss, fixed time.year for >= 2000, new mktime
- * 1998-12-20 Updated NTP code according to technical memorandum Jan '96
- * "A Kernel Model for Precision Timekeeping" by Dave Mills
*/
#include <linux/module.h>
#include <linux/kernel.h>
@@ -77,11 +72,6 @@ unsigned long profile_pc(struct pt_regs *regs)
EXPORT_SYMBOL(profile_pc);
#endif
-/*
- * hook for setting the RTC's idea of the current time.
- */
-int (*set_rtc)(void);
-
#ifndef CONFIG_GENERIC_TIME
static unsigned long dummy_gettimeoffset(void)
{
@@ -89,140 +79,6 @@ static unsigned long dummy_gettimeoffset(void)
}
#endif
-static unsigned long next_rtc_update;
-
-/*
- * If we have an externally synchronized linux clock, then update
- * CMOS clock accordingly every ~11 minutes. set_rtc() has to be
- * called as close as possible to 500 ms before the new second
- * starts.
- */
-static inline void do_set_rtc(void)
-{
- if (!ntp_synced() || set_rtc == NULL)
- return;
-
- if (next_rtc_update &&
- time_before((unsigned long)xtime.tv_sec, next_rtc_update))
- return;
-
- if (xtime.tv_nsec < 500000000 - ((unsigned) tick_nsec >> 1) &&
- xtime.tv_nsec >= 500000000 + ((unsigned) tick_nsec >> 1))
- return;
-
- if (set_rtc())
- /*
- * rtc update failed. Try again in 60s
- */
- next_rtc_update = xtime.tv_sec + 60;
- else
- next_rtc_update = xtime.tv_sec + 660;
-}
-
-#ifdef CONFIG_LEDS
-
-static void dummy_leds_event(led_event_t evt)
-{
-}
-
-void (*leds_event)(led_event_t) = dummy_leds_event;
-
-struct leds_evt_name {
- const char name[8];
- int on;
- int off;
-};
-
-static const struct leds_evt_name evt_names[] = {
- { "amber", led_amber_on, led_amber_off },
- { "blue", led_blue_on, led_blue_off },
- { "green", led_green_on, led_green_off },
- { "red", led_red_on, led_red_off },
-};
-
-static ssize_t leds_store(struct sys_device *dev,
- struct sysdev_attribute *attr,
- const char *buf, size_t size)
-{
- int ret = -EINVAL, len = strcspn(buf, " ");
-
- if (len > 0 && buf[len] == '\0')
- len--;
-
- if (strncmp(buf, "claim", len) == 0) {
- leds_event(led_claim);
- ret = size;
- } else if (strncmp(buf, "release", len) == 0) {
- leds_event(led_release);
- ret = size;
- } else {
- int i;
-
- for (i = 0; i < ARRAY_SIZE(evt_names); i++) {
- if (strlen(evt_names[i].name) != len ||
- strncmp(buf, evt_names[i].name, len) != 0)
- continue;
- if (strncmp(buf+len, " on", 3) == 0) {
- leds_event(evt_names[i].on);
- ret = size;
- } else if (strncmp(buf+len, " off", 4) == 0) {
- leds_event(evt_names[i].off);
- ret = size;
- }
- break;
- }
- }
- return ret;
-}
-
-static SYSDEV_ATTR(event, 0200, NULL, leds_store);
-
-static int leds_suspend(struct sys_device *dev, pm_message_t state)
-{
- leds_event(led_stop);
- return 0;
-}
-
-static int leds_resume(struct sys_device *dev)
-{
- leds_event(led_start);
- return 0;
-}
-
-static int leds_shutdown(struct sys_device *dev)
-{
- leds_event(led_halted);
- return 0;
-}
-
-static struct sysdev_class leds_sysclass = {
- .name = "leds",
- .shutdown = leds_shutdown,
- .suspend = leds_suspend,
- .resume = leds_resume,
-};
-
-static struct sys_device leds_device = {
- .id = 0,
- .cls = &leds_sysclass,
-};
-
-static int __init leds_init(void)
-{
- int ret;
- ret = sysdev_class_register(&leds_sysclass);
- if (ret == 0)
- ret = sysdev_register(&leds_device);
- if (ret == 0)
- ret = sysdev_create_file(&leds_device, &attr_event);
- return ret;
-}
-
-device_initcall(leds_init);
-
-EXPORT_SYMBOL(leds_event);
-#endif
-
#ifdef CONFIG_LEDS_TIMER
static inline void do_leds(void)
{
@@ -295,39 +151,6 @@ int do_settimeofday(struct timespec *tv)
EXPORT_SYMBOL(do_settimeofday);
#endif /* !CONFIG_GENERIC_TIME */
-/**
- * save_time_delta - Save the offset between system time and RTC time
- * @delta: pointer to timespec to store delta
- * @rtc: pointer to timespec for current RTC time
- *
- * Return a delta between the system time and the RTC time, such
- * that system time can be restored later with restore_time_delta()
- */
-void save_time_delta(struct timespec *delta, struct timespec *rtc)
-{
- set_normalized_timespec(delta,
- xtime.tv_sec - rtc->tv_sec,
- xtime.tv_nsec - rtc->tv_nsec);
-}
-EXPORT_SYMBOL(save_time_delta);
-
-/**
- * restore_time_delta - Restore the current system time
- * @delta: delta returned by save_time_delta()
- * @rtc: pointer to timespec for current RTC time
- */
-void restore_time_delta(struct timespec *delta, struct timespec *rtc)
-{
- struct timespec ts;
-
- set_normalized_timespec(&ts,
- delta->tv_sec + rtc->tv_sec,
- delta->tv_nsec + rtc->tv_nsec);
-
- do_settimeofday(&ts);
-}
-EXPORT_SYMBOL(restore_time_delta);
-
#ifndef CONFIG_GENERIC_CLOCKEVENTS
/*
* Kernel system timer support.
@@ -336,7 +159,6 @@ void timer_tick(void)
{
profile_tick(CPU_PROFILING);
do_leds();
- do_set_rtc();
write_seqlock(&xtime_lock);
do_timer(1);
write_sequnlock(&xtime_lock);
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 3f361a783f4..1621e5327b2 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -12,15 +12,17 @@
* 'linux/arch/arm/lib/traps.S'. Mostly a debugging aid, but will probably
* kill the offending process.
*/
-#include <linux/module.h>
#include <linux/signal.h>
-#include <linux/spinlock.h>
#include <linux/personality.h>
#include <linux/kallsyms.h>
-#include <linux/delay.h>
+#include <linux/spinlock.h>
+#include <linux/uaccess.h>
#include <linux/hardirq.h>
+#include <linux/kdebug.h>
+#include <linux/module.h>
+#include <linux/kexec.h>
+#include <linux/delay.h>
#include <linux/init.h>
-#include <linux/uaccess.h>
#include <asm/atomic.h>
#include <asm/cacheflush.h>
@@ -224,14 +226,21 @@ void show_stack(struct task_struct *tsk, unsigned long *sp)
#define S_SMP ""
#endif
-static void __die(const char *str, int err, struct thread_info *thread, struct pt_regs *regs)
+static int __die(const char *str, int err, struct thread_info *thread, struct pt_regs *regs)
{
struct task_struct *tsk = thread->task;
static int die_counter;
+ int ret;
printk(KERN_EMERG "Internal error: %s: %x [#%d]" S_PREEMPT S_SMP "\n",
str, err, ++die_counter);
sysfs_printk_last_file();
+
+ /* trap and error numbers are mostly meaningless on ARM */
+ ret = notify_die(DIE_OOPS, str, regs, err, tsk->thread.trap_no, SIGSEGV);
+ if (ret == NOTIFY_STOP)
+ return ret;
+
print_modules();
__show_regs(regs);
printk(KERN_EMERG "Process %.*s (pid: %d, stack limit = 0x%p)\n",
@@ -243,6 +252,8 @@ static void __die(const char *str, int err, struct thread_info *thread, struct p
dump_backtrace(regs, tsk);
dump_instr(KERN_EMERG, regs);
}
+
+ return ret;
}
DEFINE_SPINLOCK(die_lock);
@@ -250,16 +261,21 @@ DEFINE_SPINLOCK(die_lock);
/*
* This function is protected against re-entrancy.
*/
-NORET_TYPE void die(const char *str, struct pt_regs *regs, int err)
+void die(const char *str, struct pt_regs *regs, int err)
{
struct thread_info *thread = current_thread_info();
+ int ret;
oops_enter();
spin_lock_irq(&die_lock);
console_verbose();
bust_spinlocks(1);
- __die(str, err, thread, regs);
+ ret = __die(str, err, thread, regs);
+
+ if (regs && kexec_should_crash(thread->task))
+ crash_kexec(regs);
+
bust_spinlocks(0);
add_taint(TAINT_DIE);
spin_unlock_irq(&die_lock);
@@ -267,11 +283,10 @@ NORET_TYPE void die(const char *str, struct pt_regs *regs, int err)
if (in_interrupt())
panic("Fatal exception in interrupt");
-
if (panic_on_oops)
panic("Fatal exception");
-
- do_exit(SIGSEGV);
+ if (ret != NOTIFY_STOP)
+ do_exit(SIGSEGV);
}
void arm_notify_die(const char *str, struct pt_regs *regs,
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index 4957e13ef55..b16c07914b5 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -43,10 +43,6 @@ SECTIONS
INIT_SETUP(16)
- __early_begin = .;
- *(.early_param.init)
- __early_end = .;
-
INIT_CALLS
CON_INITCALL
SECURITY_INITCALL
diff --git a/arch/arm/mach-davinci/include/mach/hardware.h b/arch/arm/mach-davinci/include/mach/hardware.h
index 41c89386e39..c45ba1f62a1 100644
--- a/arch/arm/mach-davinci/include/mach/hardware.h
+++ b/arch/arm/mach-davinci/include/mach/hardware.h
@@ -27,7 +27,7 @@
/*
* I/O mapping
*/
-#define IO_PHYS 0x01c00000
+#define IO_PHYS 0x01c00000UL
#define IO_OFFSET 0xfd000000 /* Virtual IO = 0xfec00000 */
#define IO_SIZE 0x00400000
#define IO_VIRT (IO_PHYS + IO_OFFSET)
diff --git a/arch/arm/mach-davinci/io.c b/arch/arm/mach-davinci/io.c
index 49912b48b1b..a1c0b6b99ed 100644
--- a/arch/arm/mach-davinci/io.c
+++ b/arch/arm/mach-davinci/io.c
@@ -24,7 +24,7 @@ void __iomem *davinci_ioremap(unsigned long p, size_t size, unsigned int type)
if (BETWEEN(p, IO_PHYS, IO_SIZE))
return XLATE(p, IO_PHYS, IO_VIRT);
- return __arm_ioremap(p, size, type);
+ return __arm_ioremap_caller(p, size, type, __builtin_return_address(0));
}
EXPORT_SYMBOL(davinci_ioremap);
diff --git a/arch/arm/mach-dove/include/mach/vmalloc.h b/arch/arm/mach-dove/include/mach/vmalloc.h
index 8b2c974755c..a28792cf761 100644
--- a/arch/arm/mach-dove/include/mach/vmalloc.h
+++ b/arch/arm/mach-dove/include/mach/vmalloc.h
@@ -2,4 +2,4 @@
* arch/arm/mach-dove/include/mach/vmalloc.h
*/
-#define VMALLOC_END 0xfd800000
+#define VMALLOC_END 0xfd800000UL
diff --git a/arch/arm/mach-ep93xx/include/mach/vmalloc.h b/arch/arm/mach-ep93xx/include/mach/vmalloc.h
index aed21cd3fe2..1b3f25d03d3 100644
--- a/arch/arm/mach-ep93xx/include/mach/vmalloc.h
+++ b/arch/arm/mach-ep93xx/include/mach/vmalloc.h
@@ -2,4 +2,4 @@
* arch/arm/mach-ep93xx/include/mach/vmalloc.h
*/
-#define VMALLOC_END 0xfe800000
+#define VMALLOC_END 0xfe800000UL
diff --git a/arch/arm/mach-footbridge/common.c b/arch/arm/mach-footbridge/common.c
index 41febc796b1..e3bc3f6f6b1 100644
--- a/arch/arm/mach-footbridge/common.c
+++ b/arch/arm/mach-footbridge/common.c
@@ -32,12 +32,13 @@ unsigned int mem_fclk_21285 = 50000000;
EXPORT_SYMBOL(mem_fclk_21285);
-static void __init early_fclk(char **arg)
+static int __init early_fclk(char *arg)
{
- mem_fclk_21285 = simple_strtoul(*arg, arg, 0);
+ mem_fclk_21285 = simple_strtoul(arg, NULL, 0);
+ return 0;
}
-__early_param("mem_fclk_21285=", early_fclk);
+early_param("mem_fclk_21285", early_fclk);
static int __init parse_tag_memclk(const struct tag *tag)
{
diff --git a/arch/arm/mach-gemini/include/mach/vmalloc.h b/arch/arm/mach-gemini/include/mach/vmalloc.h
index 83e536d9436..45371eb86fc 100644
--- a/arch/arm/mach-gemini/include/mach/vmalloc.h
+++ b/arch/arm/mach-gemini/include/mach/vmalloc.h
@@ -7,4 +7,4 @@
* (at your option) any later version.
*/
-#define VMALLOC_END 0xF0000000
+#define VMALLOC_END 0xf0000000UL
diff --git a/arch/arm/mach-iop13xx/io.c b/arch/arm/mach-iop13xx/io.c
index 52958099781..48642e66c56 100644
--- a/arch/arm/mach-iop13xx/io.c
+++ b/arch/arm/mach-iop13xx/io.c
@@ -61,9 +61,9 @@ void * __iomem __iop13xx_ioremap(unsigned long cookie, size_t size,
(cookie - IOP13XX_PCIE_LOWER_MEM_RA));
break;
case IOP13XX_PBI_LOWER_MEM_RA ... IOP13XX_PBI_UPPER_MEM_RA:
- retval = __arm_ioremap(IOP13XX_PBI_LOWER_MEM_PA +
+ retval = __arm_ioremap_caller(IOP13XX_PBI_LOWER_MEM_PA +
(cookie - IOP13XX_PBI_LOWER_MEM_RA),
- size, mtype);
+ size, mtype, __builtin_return_address(0));
break;
case IOP13XX_PCIE_LOWER_IO_PA ... IOP13XX_PCIE_UPPER_IO_PA:
retval = (void *) IOP13XX_PCIE_IO_PHYS_TO_VIRT(cookie);
@@ -75,7 +75,8 @@ void * __iomem __iop13xx_ioremap(unsigned long cookie, size_t size,
retval = (void *) IOP13XX_PMMR_PHYS_TO_VIRT(cookie);
break;
default:
- retval = __arm_ioremap(cookie, size, mtype);
+ retval = __arm_ioremap_caller(cookie, size, mtype,
+ __builtin_return_address(0));
}
return retval;
diff --git a/arch/arm/mach-iop32x/include/mach/vmalloc.h b/arch/arm/mach-iop32x/include/mach/vmalloc.h
index 85ceb09d85f..c4862d48e58 100644
--- a/arch/arm/mach-iop32x/include/mach/vmalloc.h
+++ b/arch/arm/mach-iop32x/include/mach/vmalloc.h
@@ -2,4 +2,4 @@
* arch/arm/mach-iop32x/include/mach/vmalloc.h
*/
-#define VMALLOC_END 0xfe000000
+#define VMALLOC_END 0xfe000000UL
diff --git a/arch/arm/mach-iop33x/include/mach/vmalloc.h b/arch/arm/mach-iop33x/include/mach/vmalloc.h
index f9f99dea9bc..48331dc2370 100644
--- a/arch/arm/mach-iop33x/include/mach/vmalloc.h
+++ b/arch/arm/mach-iop33x/include/mach/vmalloc.h
@@ -2,4 +2,4 @@
* arch/arm/mach-iop33x/include/mach/vmalloc.h
*/
-#define VMALLOC_END 0xfe000000
+#define VMALLOC_END 0xfe000000UL
diff --git a/arch/arm/mach-ixp2000/include/mach/vmalloc.h b/arch/arm/mach-ixp2000/include/mach/vmalloc.h
index d195e35aed3..61c8dae24f9 100644
--- a/arch/arm/mach-ixp2000/include/mach/vmalloc.h
+++ b/arch/arm/mach-ixp2000/include/mach/vmalloc.h
@@ -17,4 +17,4 @@
* The vmalloc() routines leaves a hole of 4kB between each vmalloced
* area for the same reason. ;)
*/
-#define VMALLOC_END 0xfb000000
+#define VMALLOC_END 0xfb000000UL
diff --git a/arch/arm/mach-ixp23xx/include/mach/vmalloc.h b/arch/arm/mach-ixp23xx/include/mach/vmalloc.h
index dd519f678d1..896c56a1c00 100644
--- a/arch/arm/mach-ixp23xx/include/mach/vmalloc.h
+++ b/arch/arm/mach-ixp23xx/include/mach/vmalloc.h
@@ -7,4 +7,4 @@
* specific static I/O.
*/
-#define VMALLOC_END (0xec000000)
+#define VMALLOC_END (0xec000000UL)
diff --git a/arch/arm/mach-ixp4xx/include/mach/vmalloc.h b/arch/arm/mach-ixp4xx/include/mach/vmalloc.h
index 7b3580b53ad..9bcd64d5985 100644
--- a/arch/arm/mach-ixp4xx/include/mach/vmalloc.h
+++ b/arch/arm/mach-ixp4xx/include/mach/vmalloc.h
@@ -1,5 +1,5 @@
/*
* arch/arm/mach-ixp4xx/include/mach/vmalloc.h
*/
-#define VMALLOC_END (0xFF000000)
+#define VMALLOC_END (0xff000000UL)
diff --git a/arch/arm/mach-kirkwood/include/mach/vmalloc.h b/arch/arm/mach-kirkwood/include/mach/vmalloc.h
index 8f48260dcda..bf162ca3d2c 100644
--- a/arch/arm/mach-kirkwood/include/mach/vmalloc.h
+++ b/arch/arm/mach-kirkwood/include/mach/vmalloc.h
@@ -2,4 +2,4 @@
* arch/arm/mach-kirkwood/include/mach/vmalloc.h
*/
-#define VMALLOC_END 0xfe800000
+#define VMALLOC_END 0xfe800000UL
diff --git a/arch/arm/mach-lh7a40x/include/mach/vmalloc.h b/arch/arm/mach-lh7a40x/include/mach/vmalloc.h
index 3fbd49490bb..d62da7358b1 100644
--- a/arch/arm/mach-lh7a40x/include/mach/vmalloc.h
+++ b/arch/arm/mach-lh7a40x/include/mach/vmalloc.h
@@ -7,4 +7,4 @@
* version 2 as published by the Free Software Foundation.
*
*/
-#define VMALLOC_END (0xe8000000)
+#define VMALLOC_END (0xe8000000UL)
diff --git a/arch/arm/mach-loki/include/mach/vmalloc.h b/arch/arm/mach-loki/include/mach/vmalloc.h
index 8dc3bfcbf9f..5dcbd865443 100644
--- a/arch/arm/mach-loki/include/mach/vmalloc.h
+++ b/arch/arm/mach-loki/include/mach/vmalloc.h
@@ -2,4 +2,4 @@
* arch/arm/mach-loki/include/mach/vmalloc.h
*/
-#define VMALLOC_END 0xfe800000
+#define VMALLOC_END 0xfe800000UL
diff --git a/arch/arm/mach-mmp/include/mach/vmalloc.h b/arch/arm/mach-mmp/include/mach/vmalloc.h
index b60ccaf9fee..1d0bac003ad 100644
--- a/arch/arm/mach-mmp/include/mach/vmalloc.h
+++ b/arch/arm/mach-mmp/include/mach/vmalloc.h
@@ -2,4 +2,4 @@
* linux/arch/arm/mach-mmp/include/mach/vmalloc.h
*/
-#define VMALLOC_END 0xfe000000
+#define VMALLOC_END 0xfe000000UL
diff --git a/arch/arm/mach-msm/io.c b/arch/arm/mach-msm/io.c
index 1c5e7dac086..05f96b780aa 100644
--- a/arch/arm/mach-msm/io.c
+++ b/arch/arm/mach-msm/io.c
@@ -76,5 +76,6 @@ __msm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
mtype = MT_DEVICE_NONSHARED;
}
- return __arm_ioremap(phys_addr, size, mtype);
+ return __arm_ioremap_caller(phys_addr, size, mtype,
+ __builtin_return_address(0));
}
diff --git a/arch/arm/mach-mv78xx0/include/mach/vmalloc.h b/arch/arm/mach-mv78xx0/include/mach/vmalloc.h
index 1c4954386a8..ba26fe98e64 100644
--- a/arch/arm/mach-mv78xx0/include/mach/vmalloc.h
+++ b/arch/arm/mach-mv78xx0/include/mach/vmalloc.h
@@ -2,4 +2,4 @@
* arch/arm/mach-mv78xx0/include/mach/vmalloc.h
*/
-#define VMALLOC_END 0xfe000000
+#define VMALLOC_END 0xfe000000UL
diff --git a/arch/arm/mach-nomadik/include/mach/vmalloc.h b/arch/arm/mach-nomadik/include/mach/vmalloc.h
index be12e31ea52..f83d574d944 100644
--- a/arch/arm/mach-nomadik/include/mach/vmalloc.h
+++ b/arch/arm/mach-nomadik/include/mach/vmalloc.h
@@ -1,2 +1,2 @@
-#define VMALLOC_END 0xe8000000
+#define VMALLOC_END 0xe8000000UL
diff --git a/arch/arm/mach-ns9xxx/include/mach/vmalloc.h b/arch/arm/mach-ns9xxx/include/mach/vmalloc.h
index fe964d3bcc4..c8651974c4b 100644
--- a/arch/arm/mach-ns9xxx/include/mach/vmalloc.h
+++ b/arch/arm/mach-ns9xxx/include/mach/vmalloc.h
@@ -11,6 +11,6 @@
#ifndef __ASM_ARCH_VMALLOC_H
#define __ASM_ARCH_VMALLOC_H
-#define VMALLOC_END (0xf0000000)
+#define VMALLOC_END (0xf0000000UL)
#endif /* ifndef __ASM_ARCH_VMALLOC_H */
diff --git a/arch/arm/mach-omap2/board-4430sdp.c b/arch/arm/mach-omap2/board-4430sdp.c
index 0c6be6b4a7e..8ba8fb5b251 100644
--- a/arch/arm/mach-omap2/board-4430sdp.c
+++ b/arch/arm/mach-omap2/board-4430sdp.c
@@ -28,6 +28,7 @@
#include <plat/control.h>
#include <plat/timer-gp.h>
#include <asm/hardware/gic.h>
+#include <asm/hardware/cache-l2x0.h>
static struct platform_device sdp4430_lcd_device = {
.name = "sdp4430_lcd",
@@ -50,6 +51,59 @@ static struct omap_board_config_kernel sdp4430_config[] __initdata = {
{ OMAP_TAG_LCD, &sdp4430_lcd_config },
};
+#ifdef CONFIG_CACHE_L2X0
+noinline void omap_smc1(u32 fn, u32 arg)
+{
+ register u32 r12 asm("r12") = fn;
+ register u32 r0 asm("r0") = arg;
+
+ /* This is common routine cache secure monitor API used to
+ * modify the PL310 secure registers.
+ * r0 contains the value to be modified and "r12" contains
+ * the monitor API number. It uses few CPU registers
+ * internally and hence they need be backed up including
+ * link register "lr".
+ * Explicitly save r11 and r12 the compiler generated code
+ * won't save it.
+ */
+ asm volatile(
+ "stmfd r13!, {r11,r12}\n"
+ "dsb\n"
+ "smc\n"
+ "ldmfd r13!, {r11,r12}\n"
+ : "+r" (r0), "+r" (r12)
+ :
+ : "r4", "r5", "r10", "lr", "cc");
+}
+EXPORT_SYMBOL(omap_smc1);
+
+static int __init omap_l2_cache_init(void)
+{
+ void __iomem *l2cache_base;
+
+ /* To avoid code running on other OMAPs in
+ * multi-omap builds
+ */
+ if (!cpu_is_omap44xx())
+ return -ENODEV;
+
+ /* Static mapping, never released */
+ l2cache_base = ioremap(OMAP44XX_L2CACHE_BASE, SZ_4K);
+ BUG_ON(!l2cache_base);
+
+ /* Enable PL310 L2 Cache controller */
+ omap_smc1(0x102, 0x1);
+
+ /* 32KB way size, 16-way associativity,
+ * parity disabled
+ */
+ l2x0_init(l2cache_base, 0x0e050000, 0xc0000fff);
+
+ return 0;
+}
+early_initcall(omap_l2_cache_init);
+#endif
+
static void __init gic_init_irq(void)
{
void __iomem *base;
diff --git a/arch/arm/mach-orion5x/include/mach/vmalloc.h b/arch/arm/mach-orion5x/include/mach/vmalloc.h
index 7147a297e97..06b50aeff7b 100644
--- a/arch/arm/mach-orion5x/include/mach/vmalloc.h
+++ b/arch/arm/mach-orion5x/include/mach/vmalloc.h
@@ -2,4 +2,4 @@
* arch/arm/mach-orion5x/include/mach/vmalloc.h
*/
-#define VMALLOC_END 0xfd800000
+#define VMALLOC_END 0xfd800000UL
diff --git a/arch/arm/mach-pxa/include/mach/vmalloc.h b/arch/arm/mach-pxa/include/mach/vmalloc.h
index e90c5eeb81d..bfecfbf5f46 100644
--- a/arch/arm/mach-pxa/include/mach/vmalloc.h
+++ b/arch/arm/mach-pxa/include/mach/vmalloc.h
@@ -8,4 +8,4 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
-#define VMALLOC_END (0xe8000000)
+#define VMALLOC_END (0xe8000000UL)
diff --git a/arch/arm/mach-realview/include/mach/vmalloc.h b/arch/arm/mach-realview/include/mach/vmalloc.h
index fe0de1b507a..a2a4c686140 100644
--- a/arch/arm/mach-realview/include/mach/vmalloc.h
+++ b/arch/arm/mach-realview/include/mach/vmalloc.h
@@ -18,4 +18,4 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#define VMALLOC_END 0xf8000000
+#define VMALLOC_END 0xf8000000UL
diff --git a/arch/arm/mach-s3c24a0/include/mach/vmalloc.h b/arch/arm/mach-s3c24a0/include/mach/vmalloc.h
index 4d4fe484958..91465682079 100644
--- a/arch/arm/mach-s3c24a0/include/mach/vmalloc.h
+++ b/arch/arm/mach-s3c24a0/include/mach/vmalloc.h
@@ -12,6 +12,6 @@
#ifndef __ASM_ARCH_VMALLOC_H
#define __ASM_ARCH_VMALLOC_H
-#define VMALLOC_END (0xE0000000)
+#define VMALLOC_END (0xe0000000UL)
#endif /* __ASM_ARCH_VMALLOC_H */
diff --git a/arch/arm/mach-sa1100/include/mach/vmalloc.h b/arch/arm/mach-sa1100/include/mach/vmalloc.h
index ec8fdc5a360..b3d00239848 100644
--- a/arch/arm/mach-sa1100/include/mach/vmalloc.h
+++ b/arch/arm/mach-sa1100/include/mach/vmalloc.h
@@ -1,4 +1,4 @@
/*
* arch/arm/mach-sa1100/include/mach/vmalloc.h
*/
-#define VMALLOC_END (0xe8000000)
+#define VMALLOC_END (0xe8000000UL)
diff --git a/arch/arm/mach-u300/include/mach/vmalloc.h b/arch/arm/mach-u300/include/mach/vmalloc.h
index b00c51a66fb..ec423b92b81 100644
--- a/arch/arm/mach-u300/include/mach/vmalloc.h
+++ b/arch/arm/mach-u300/include/mach/vmalloc.h
@@ -9,4 +9,4 @@
* End must be above the I/O registers and on an even 2MiB boundary.
* Author: Linus Walleij <linus.walleij@stericsson.com>
*/
-#define VMALLOC_END 0xfe800000
+#define VMALLOC_END 0xfe800000UL
diff --git a/arch/arm/mach-ux500/include/mach/vmalloc.h b/arch/arm/mach-ux500/include/mach/vmalloc.h
index 86cdbbce184..a4945cb4117 100644
--- a/arch/arm/mach-ux500/include/mach/vmalloc.h
+++ b/arch/arm/mach-ux500/include/mach/vmalloc.h
@@ -15,4 +15,4 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#define VMALLOC_END 0xf0000000
+#define VMALLOC_END 0xf0000000UL
diff --git a/arch/arm/mach-w90x900/include/mach/vmalloc.h b/arch/arm/mach-w90x900/include/mach/vmalloc.h
index 2f9dfb92853..b067e44500a 100644
--- a/arch/arm/mach-w90x900/include/mach/vmalloc.h
+++ b/arch/arm/mach-w90x900/include/mach/vmalloc.h
@@ -18,6 +18,6 @@
#ifndef __ASM_ARCH_VMALLOC_H
#define __ASM_ARCH_VMALLOC_H
-#define VMALLOC_END (0xE0000000)
+#define VMALLOC_END (0xe0000000UL)
#endif /* __ASM_ARCH_VMALLOC_H */
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index baf638487a2..c4ed9f93f64 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -399,7 +399,7 @@ config CPU_V6
config CPU_32v6K
bool "Support ARM V6K processor extensions" if !SMP
depends on CPU_V6
- default y if SMP && !ARCH_MX3
+ default y if SMP && !(ARCH_MX3 || ARCH_OMAP2)
help
Say Y here if your ARMv6 processor supports the 'K' extension.
This enables the kernel to use some instructions not present
@@ -410,7 +410,7 @@ config CPU_32v6K
# ARMv7
config CPU_V7
bool "Support ARM V7 processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB || MACH_REALVIEW_PBX
- select CPU_32v6K
+ select CPU_32v6K if !ARCH_OMAP2
select CPU_32v7
select CPU_ABRT_EV7
select CPU_PABRT_V7
@@ -754,7 +754,7 @@ config CACHE_FEROCEON_L2_WRITETHROUGH
config CACHE_L2X0
bool "Enable the L2x0 outer cache controller"
depends on REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || MACH_REALVIEW_PB1176 || \
- REALVIEW_EB_A9MP || ARCH_MX35 || ARCH_MX31 || MACH_REALVIEW_PBX || ARCH_NOMADIK
+ REALVIEW_EB_A9MP || ARCH_MX35 || ARCH_MX31 || MACH_REALVIEW_PBX || ARCH_NOMADIK || ARCH_OMAP4
default y
select OUTER_CACHE
help
@@ -779,5 +779,5 @@ config CACHE_XSC3L2
config ARM_L1_CACHE_SHIFT
int
- default 6 if ARCH_OMAP3 || ARCH_S5PC1XX
+ default 6 if ARM_L1_CACHE_SHIFT_6
default 5
diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c
index b270d6228fe..0c5eb6983ce 100644
--- a/arch/arm/mm/alignment.c
+++ b/arch/arm/mm/alignment.c
@@ -898,11 +898,7 @@ static int __init alignment_init(void)
#ifdef CONFIG_PROC_FS
struct proc_dir_entry *res;
- res = proc_mkdir("cpu", NULL);
- if (!res)
- return -ENOMEM;
-
- res = create_proc_entry("alignment", S_IWUSR | S_IRUGO, res);
+ res = create_proc_entry("cpu/alignment", S_IWUSR | S_IRUGO, NULL);
if (!res)
return -ENOMEM;
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index cb8fc6573b1..07334632d3e 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -42,6 +42,57 @@ static inline void cache_sync(void)
cache_wait(base + L2X0_CACHE_SYNC, 1);
}
+static inline void l2x0_clean_line(unsigned long addr)
+{
+ void __iomem *base = l2x0_base;
+ cache_wait(base + L2X0_CLEAN_LINE_PA, 1);
+ writel(addr, base + L2X0_CLEAN_LINE_PA);
+}
+
+static inline void l2x0_inv_line(unsigned long addr)
+{
+ void __iomem *base = l2x0_base;
+ cache_wait(base + L2X0_INV_LINE_PA, 1);
+ writel(addr, base + L2X0_INV_LINE_PA);
+}
+
+#ifdef CONFIG_PL310_ERRATA_588369
+static void debug_writel(unsigned long val)
+{
+ extern void omap_smc1(u32 fn, u32 arg);
+
+ /*
+ * Texas Instrument secure monitor api to modify the
+ * PL310 Debug Control Register.
+ */
+ omap_smc1(0x100, val);
+}
+
+static inline void l2x0_flush_line(unsigned long addr)
+{
+ void __iomem *base = l2x0_base;
+
+ /* Clean by PA followed by Invalidate by PA */
+ cache_wait(base + L2X0_CLEAN_LINE_PA, 1);
+ writel(addr, base + L2X0_CLEAN_LINE_PA);
+ cache_wait(base + L2X0_INV_LINE_PA, 1);
+ writel(addr, base + L2X0_INV_LINE_PA);
+}
+#else
+
+/* Optimised out for non-errata case */
+static inline void debug_writel(unsigned long val)
+{
+}
+
+static inline void l2x0_flush_line(unsigned long addr)
+{
+ void __iomem *base = l2x0_base;
+ cache_wait(base + L2X0_CLEAN_INV_LINE_PA, 1);
+ writel(addr, base + L2X0_CLEAN_INV_LINE_PA);
+}
+#endif
+
static inline void l2x0_inv_all(void)
{
unsigned long flags;
@@ -62,23 +113,24 @@ static void l2x0_inv_range(unsigned long start, unsigned long end)
spin_lock_irqsave(&l2x0_lock, flags);
if (start & (CACHE_LINE_SIZE - 1)) {
start &= ~(CACHE_LINE_SIZE - 1);
- cache_wait(base + L2X0_CLEAN_INV_LINE_PA, 1);
- writel(start, base + L2X0_CLEAN_INV_LINE_PA);
+ debug_writel(0x03);
+ l2x0_flush_line(start);
+ debug_writel(0x00);
start += CACHE_LINE_SIZE;
}
if (end & (CACHE_LINE_SIZE - 1)) {
end &= ~(CACHE_LINE_SIZE - 1);
- cache_wait(base + L2X0_CLEAN_INV_LINE_PA, 1);
- writel(end, base + L2X0_CLEAN_INV_LINE_PA);
+ debug_writel(0x03);
+ l2x0_flush_line(end);
+ debug_writel(0x00);
}
while (start < end) {
unsigned long blk_end = start + min(end - start, 4096UL);
while (start < blk_end) {
- cache_wait(base + L2X0_INV_LINE_PA, 1);
- writel(start, base + L2X0_INV_LINE_PA);
+ l2x0_inv_line(start);
start += CACHE_LINE_SIZE;
}
@@ -103,8 +155,7 @@ static void l2x0_clean_range(unsigned long start, unsigned long end)
unsigned long blk_end = start + min(end - start, 4096UL);
while (start < blk_end) {
- cache_wait(base + L2X0_CLEAN_LINE_PA, 1);
- writel(start, base + L2X0_CLEAN_LINE_PA);
+ l2x0_clean_line(start);
start += CACHE_LINE_SIZE;
}
@@ -128,11 +179,12 @@ static void l2x0_flush_range(unsigned long start, unsigned long end)
while (start < end) {
unsigned long blk_end = start + min(end - start, 4096UL);
+ debug_writel(0x03);
while (start < blk_end) {
- cache_wait(base + L2X0_CLEAN_INV_LINE_PA, 1);
- writel(start, base + L2X0_CLEAN_INV_LINE_PA);
+ l2x0_flush_line(start);
start += CACHE_LINE_SIZE;
}
+ debug_writel(0x00);
if (blk_end < end) {
spin_unlock_irqrestore(&l2x0_lock, flags);
diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c
index a9e22e31eaa..b0ee9ba3cfa 100644
--- a/arch/arm/mm/context.c
+++ b/arch/arm/mm/context.c
@@ -10,12 +10,17 @@
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/mm.h>
+#include <linux/smp.h>
+#include <linux/percpu.h>
#include <asm/mmu_context.h>
#include <asm/tlbflush.h>
static DEFINE_SPINLOCK(cpu_asid_lock);
unsigned int cpu_last_asid = ASID_FIRST_VERSION;
+#ifdef CONFIG_SMP
+DEFINE_PER_CPU(struct mm_struct *, current_mm);
+#endif
/*
* We fork()ed a process, and we need a new context for the child
@@ -26,13 +31,109 @@ unsigned int cpu_last_asid = ASID_FIRST_VERSION;
void __init_new_context(struct task_struct *tsk, struct mm_struct *mm)
{
mm->context.id = 0;
+ spin_lock_init(&mm->context.id_lock);
}
+static void flush_context(void)
+{
+ /* set the reserved ASID before flushing the TLB */
+ asm("mcr p15, 0, %0, c13, c0, 1\n" : : "r" (0));
+ isb();
+ local_flush_tlb_all();
+ if (icache_is_vivt_asid_tagged()) {
+ __flush_icache_all();
+ dsb();
+ }
+}
+
+#ifdef CONFIG_SMP
+
+static void set_mm_context(struct mm_struct *mm, unsigned int asid)
+{
+ unsigned long flags;
+
+ /*
+ * Locking needed for multi-threaded applications where the
+ * same mm->context.id could be set from different CPUs during
+ * the broadcast. This function is also called via IPI so the
+ * mm->context.id_lock has to be IRQ-safe.
+ */
+ spin_lock_irqsave(&mm->context.id_lock, flags);
+ if (likely((mm->context.id ^ cpu_last_asid) >> ASID_BITS)) {
+ /*
+ * Old version of ASID found. Set the new one and
+ * reset mm_cpumask(mm).
+ */
+ mm->context.id = asid;
+ cpumask_clear(mm_cpumask(mm));
+ }
+ spin_unlock_irqrestore(&mm->context.id_lock, flags);
+
+ /*
+ * Set the mm_cpumask(mm) bit for the current CPU.
+ */
+ cpumask_set_cpu(smp_processor_id(), mm_cpumask(mm));
+}
+
+/*
+ * Reset the ASID on the current CPU. This function call is broadcast
+ * from the CPU handling the ASID rollover and holding cpu_asid_lock.
+ */
+static void reset_context(void *info)
+{
+ unsigned int asid;
+ unsigned int cpu = smp_processor_id();
+ struct mm_struct *mm = per_cpu(current_mm, cpu);
+
+ /*
+ * Check if a current_mm was set on this CPU as it might still
+ * be in the early booting stages and using the reserved ASID.
+ */
+ if (!mm)
+ return;
+
+ smp_rmb();
+ asid = cpu_last_asid + cpu + 1;
+
+ flush_context();
+ set_mm_context(mm, asid);
+
+ /* set the new ASID */
+ asm("mcr p15, 0, %0, c13, c0, 1\n" : : "r" (mm->context.id));
+ isb();
+}
+
+#else
+
+static inline void set_mm_context(struct mm_struct *mm, unsigned int asid)
+{
+ mm->context.id = asid;
+ cpumask_copy(mm_cpumask(mm), cpumask_of(smp_processor_id()));
+}
+
+#endif
+
void __new_context(struct mm_struct *mm)
{
unsigned int asid;
spin_lock(&cpu_asid_lock);
+#ifdef CONFIG_SMP
+ /*
+ * Check the ASID again, in case the change was broadcast from
+ * another CPU before we acquired the lock.
+ */
+ if (unlikely(((mm->context.id ^ cpu_last_asid) >> ASID_BITS) == 0)) {
+ cpumask_set_cpu(smp_processor_id(), mm_cpumask(mm));
+ spin_unlock(&cpu_asid_lock);
+ return;
+ }
+#endif
+ /*
+ * At this point, it is guaranteed that the current mm (with
+ * an old ASID) isn't active on any other CPU since the ASIDs
+ * are changed simultaneously via IPI.
+ */
asid = ++cpu_last_asid;
if (asid == 0)
asid = cpu_last_asid = ASID_FIRST_VERSION;
@@ -42,20 +143,15 @@ void __new_context(struct mm_struct *mm)
* to start a new version and flush the TLB.
*/
if (unlikely((asid & ~ASID_MASK) == 0)) {
- asid = ++cpu_last_asid;
- /* set the reserved ASID before flushing the TLB */
- asm("mcr p15, 0, %0, c13, c0, 1 @ set reserved context ID\n"
- :
- : "r" (0));
- isb();
- flush_tlb_all();
- if (icache_is_vivt_asid_tagged()) {
- __flush_icache_all();
- dsb();
- }
+ asid = cpu_last_asid + smp_processor_id() + 1;
+ flush_context();
+#ifdef CONFIG_SMP
+ smp_wmb();
+ smp_call_function(reset_context, NULL, 1);
+#endif
+ cpu_last_asid += NR_CPUS;
}
- spin_unlock(&cpu_asid_lock);
- cpumask_copy(mm_cpumask(mm), cpumask_of(smp_processor_id()));
- mm->context.id = asid;
+ set_mm_context(mm, asid);
+ spin_unlock(&cpu_asid_lock);
}
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 64daef2173b..0da7eccf774 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -29,9 +29,6 @@
#error "CONSISTENT_DMA_SIZE must be multiple of 2MiB"
#endif
-#define CONSISTENT_END (0xffe00000)
-#define CONSISTENT_BASE (CONSISTENT_END - CONSISTENT_DMA_SIZE)
-
#define CONSISTENT_OFFSET(x) (((unsigned long)(x) - CONSISTENT_BASE) >> PAGE_SHIFT)
#define CONSISTENT_PTE_INDEX(x) (((unsigned long)(x) - CONSISTENT_BASE) >> PGDIR_SHIFT)
#define NUM_CONSISTENT_PTES (CONSISTENT_DMA_SIZE >> PGDIR_SHIFT)
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
index a04ffbbbe25..7829cb5425f 100644
--- a/arch/arm/mm/init.c
+++ b/arch/arm/mm/init.c
@@ -23,6 +23,7 @@
#include <asm/setup.h>
#include <asm/sizes.h>
#include <asm/tlb.h>
+#include <asm/fixmap.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
@@ -32,19 +33,21 @@
static unsigned long phys_initrd_start __initdata = 0;
static unsigned long phys_initrd_size __initdata = 0;
-static void __init early_initrd(char **p)
+static int __init early_initrd(char *p)
{
unsigned long start, size;
+ char *endp;
- start = memparse(*p, p);
- if (**p == ',') {
- size = memparse((*p) + 1, p);
+ start = memparse(p, &endp);
+ if (*endp == ',') {
+ size = memparse(endp + 1, NULL);
phys_initrd_start = start;
phys_initrd_size = size;
}
+ return 0;
}
-__early_param("initrd=", early_initrd);
+early_param("initrd", early_initrd);
static int __init parse_tag_initrd(const struct tag *tag)
{
@@ -560,7 +563,7 @@ static void __init free_unused_memmap_node(int node, struct meminfo *mi)
*/
void __init mem_init(void)
{
- unsigned int codesize, datasize, initsize;
+ unsigned long reserved_pages, free_pages;
int i, node;
#ifndef CONFIG_DISCONTIGMEM
@@ -596,6 +599,33 @@ void __init mem_init(void)
totalram_pages += totalhigh_pages;
#endif
+ reserved_pages = free_pages = 0;
+
+ for_each_online_node(node) {
+ pg_data_t *n = NODE_DATA(node);
+ struct page *map = pgdat_page_nr(n, 0) - n->node_start_pfn;
+
+ for_each_nodebank(i, &meminfo, node) {
+ struct membank *bank = &meminfo.bank[i];
+ unsigned int pfn1, pfn2;
+ struct page *page, *end;
+
+ pfn1 = bank_pfn_start(bank);
+ pfn2 = bank_pfn_end(bank);
+
+ page = map + pfn1;
+ end = map + pfn2;
+
+ do {
+ if (PageReserved(page))
+ reserved_pages++;
+ else if (!page_count(page))
+ free_pages++;
+ page++;
+ } while (page < end);
+ }
+ }
+
/*
* Since our memory may not be contiguous, calculate the
* real number of pages we have in this system
@@ -608,16 +638,71 @@ void __init mem_init(void)
}
printk(" = %luMB total\n", num_physpages >> (20 - PAGE_SHIFT));
- codesize = _etext - _text;
- datasize = _end - _data;
- initsize = __init_end - __init_begin;
-
- printk(KERN_NOTICE "Memory: %luKB available (%dK code, "
- "%dK data, %dK init, %luK highmem)\n",
- nr_free_pages() << (PAGE_SHIFT-10), codesize >> 10,
- datasize >> 10, initsize >> 10,
+ printk(KERN_NOTICE "Memory: %luk/%luk available, %luk reserved, %luK highmem\n",
+ nr_free_pages() << (PAGE_SHIFT-10),
+ free_pages << (PAGE_SHIFT-10),
+ reserved_pages << (PAGE_SHIFT-10),
totalhigh_pages << (PAGE_SHIFT-10));
+#define MLK(b, t) b, t, ((t) - (b)) >> 10
+#define MLM(b, t) b, t, ((t) - (b)) >> 20
+#define MLK_ROUNDUP(b, t) b, t, DIV_ROUND_UP(((t) - (b)), SZ_1K)
+
+ printk(KERN_NOTICE "Virtual kernel memory layout:\n"
+ " vector : 0x%08lx - 0x%08lx (%4ld kB)\n"
+ " fixmap : 0x%08lx - 0x%08lx (%4ld kB)\n"
+#ifdef CONFIG_MMU
+ " DMA : 0x%08lx - 0x%08lx (%4ld MB)\n"
+#endif
+ " vmalloc : 0x%08lx - 0x%08lx (%4ld MB)\n"
+ " lowmem : 0x%08lx - 0x%08lx (%4ld MB)\n"
+#ifdef CONFIG_HIGHMEM
+ " pkmap : 0x%08lx - 0x%08lx (%4ld MB)\n"
+#endif
+ " modules : 0x%08lx - 0x%08lx (%4ld MB)\n"
+ " .init : 0x%p" " - 0x%p" " (%4d kB)\n"
+ " .text : 0x%p" " - 0x%p" " (%4d kB)\n"
+ " .data : 0x%p" " - 0x%p" " (%4d kB)\n",
+
+ MLK(UL(CONFIG_VECTORS_BASE), UL(CONFIG_VECTORS_BASE) +
+ (PAGE_SIZE)),
+ MLK(FIXADDR_START, FIXADDR_TOP),
+#ifdef CONFIG_MMU
+ MLM(CONSISTENT_BASE, CONSISTENT_END),
+#endif
+ MLM(VMALLOC_START, VMALLOC_END),
+ MLM(PAGE_OFFSET, (unsigned long)high_memory),
+#ifdef CONFIG_HIGHMEM
+ MLM(PKMAP_BASE, (PKMAP_BASE) + (LAST_PKMAP) *
+ (PAGE_SIZE)),
+#endif
+ MLM(MODULES_VADDR, MODULES_END),
+
+ MLK_ROUNDUP(__init_begin, __init_end),
+ MLK_ROUNDUP(_text, _etext),
+ MLK_ROUNDUP(_data, _edata));
+
+#undef MLK
+#undef MLM
+#undef MLK_ROUNDUP
+
+ /*
+ * Check boundaries twice: Some fundamental inconsistencies can
+ * be detected at build time already.
+ */
+#ifdef CONFIG_MMU
+ BUILD_BUG_ON(VMALLOC_END > CONSISTENT_BASE);
+ BUG_ON(VMALLOC_END > CONSISTENT_BASE);
+
+ BUILD_BUG_ON(TASK_SIZE > MODULES_VADDR);
+ BUG_ON(TASK_SIZE > MODULES_VADDR);
+#endif
+
+#ifdef CONFIG_HIGHMEM
+ BUILD_BUG_ON(PKMAP_BASE + LAST_PKMAP * PAGE_SIZE > PAGE_OFFSET);
+ BUG_ON(PKMAP_BASE + LAST_PKMAP * PAGE_SIZE > PAGE_OFFSET);
+#endif
+
if (PAGE_SIZE >= 16384 && num_physpages <= 128) {
extern int sysctl_overcommit_memory;
/*
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index 0ab75c60f7c..28c8b950ef0 100644
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -139,8 +139,8 @@ void __check_kvm_seq(struct mm_struct *mm)
* which requires the new ioremap'd region to be referenced, the CPU will
* reference the _old_ region.
*
- * Note that get_vm_area() allocates a guard 4K page, so we need to mask
- * the size back to 1MB aligned or we will overflow in the loop below.
+ * Note that get_vm_area_caller() allocates a guard 4K page, so we need to
+ * mask the size back to 1MB aligned or we will overflow in the loop below.
*/
static void unmap_area_sections(unsigned long virt, unsigned long size)
{
@@ -254,22 +254,8 @@ remap_area_supersections(unsigned long virt, unsigned long pfn,
}
#endif
-
-/*
- * Remap an arbitrary physical address space into the kernel virtual
- * address space. Needed when the kernel wants to access high addresses
- * directly.
- *
- * NOTE! We need to allow non-page-aligned mappings too: we will obviously
- * have to convert them into an offset in a page-aligned mapping, but the
- * caller shouldn't need to know that small detail.
- *
- * 'flags' are the extra L_PTE_ flags that you want to specify for this
- * mapping. See <asm/pgtable.h> for more information.
- */
-void __iomem *
-__arm_ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size,
- unsigned int mtype)
+void __iomem * __arm_ioremap_pfn_caller(unsigned long pfn,
+ unsigned long offset, size_t size, unsigned int mtype, void *caller)
{
const struct mem_type *type;
int err;
@@ -291,7 +277,7 @@ __arm_ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size,
*/
size = PAGE_ALIGN(offset + size);
- area = get_vm_area(size, VM_IOREMAP);
+ area = get_vm_area_caller(size, VM_IOREMAP, caller);
if (!area)
return NULL;
addr = (unsigned long)area->addr;
@@ -318,10 +304,9 @@ __arm_ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size,
flush_cache_vmap(addr, addr + size);
return (void __iomem *) (offset + addr);
}
-EXPORT_SYMBOL(__arm_ioremap_pfn);
-void __iomem *
-__arm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
+void __iomem *__arm_ioremap_caller(unsigned long phys_addr, size_t size,
+ unsigned int mtype, void *caller)
{
unsigned long last_addr;
unsigned long offset = phys_addr & ~PAGE_MASK;
@@ -334,7 +319,33 @@ __arm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
if (!size || last_addr < phys_addr)
return NULL;
- return __arm_ioremap_pfn(pfn, offset, size, mtype);
+ return __arm_ioremap_pfn_caller(pfn, offset, size, mtype,
+ caller);
+}
+
+/*
+ * Remap an arbitrary physical address space into the kernel virtual
+ * address space. Needed when the kernel wants to access high addresses
+ * directly.
+ *
+ * NOTE! We need to allow non-page-aligned mappings too: we will obviously
+ * have to convert them into an offset in a page-aligned mapping, but the
+ * caller shouldn't need to know that small detail.
+ */
+void __iomem *
+__arm_ioremap_pfn(unsigned long pfn, unsigned long offset, size_t size,
+ unsigned int mtype)
+{
+ return __arm_ioremap_pfn_caller(pfn, offset, size, mtype,
+ __builtin_return_address(0));
+}
+EXPORT_SYMBOL(__arm_ioremap_pfn);
+
+void __iomem *
+__arm_ioremap(unsigned long phys_addr, size_t size, unsigned int mtype)
+{
+ return __arm_ioremap_caller(phys_addr, size, mtype,
+ __builtin_return_address(0));
}
EXPORT_SYMBOL(__arm_ioremap);
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index 1708da82da9..88f5d71248d 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -100,18 +100,17 @@ static struct cachepolicy cache_policies[] __initdata = {
* writebuffer to be turned off. (Note: the write
* buffer should not be on and the cache off).
*/
-static void __init early_cachepolicy(char **p)
+static int __init early_cachepolicy(char *p)
{
int i;
for (i = 0; i < ARRAY_SIZE(cache_policies); i++) {
int len = strlen(cache_policies[i].policy);
- if (memcmp(*p, cache_policies[i].policy, len) == 0) {
+ if (memcmp(p, cache_policies[i].policy, len) == 0) {
cachepolicy = i;
cr_alignment &= ~cache_policies[i].cr_mask;
cr_no_alignment &= ~cache_policies[i].cr_mask;
- *p += len;
break;
}
}
@@ -130,36 +129,37 @@ static void __init early_cachepolicy(char **p)
}
flush_cache_all();
set_cr(cr_alignment);
+ return 0;
}
-__early_param("cachepolicy=", early_cachepolicy);
+early_param("cachepolicy", early_cachepolicy);
-static void __init early_nocache(char **__unused)
+static int __init early_nocache(char *__unused)
{
char *p = "buffered";
printk(KERN_WARNING "nocache is deprecated; use cachepolicy=%s\n", p);
- early_cachepolicy(&p);
+ early_cachepolicy(p);
+ return 0;
}
-__early_param("nocache", early_nocache);
+early_param("nocache", early_nocache);
-static void __init early_nowrite(char **__unused)
+static int __init early_nowrite(char *__unused)
{
char *p = "uncached";
printk(KERN_WARNING "nowb is deprecated; use cachepolicy=%s\n", p);
- early_cachepolicy(&p);
+ early_cachepolicy(p);
+ return 0;
}
-__early_param("nowb", early_nowrite);
+early_param("nowb", early_nowrite);
-static void __init early_ecc(char **p)
+static int __init early_ecc(char *p)
{
- if (memcmp(*p, "on", 2) == 0) {
+ if (memcmp(p, "on", 2) == 0)
ecc_mask = PMD_PROTECTION;
- *p += 2;
- } else if (memcmp(*p, "off", 3) == 0) {
+ else if (memcmp(p, "off", 3) == 0)
ecc_mask = 0;
- *p += 3;
- }
+ return 0;
}
-__early_param("ecc=", early_ecc);
+early_param("ecc", early_ecc);
static int __init noalign_setup(char *__unused)
{
@@ -670,9 +670,9 @@ static unsigned long __initdata vmalloc_reserve = SZ_128M;
* bytes. This can be used to increase (or decrease) the vmalloc
* area - the default is 128m.
*/
-static void __init early_vmalloc(char **arg)
+static int __init early_vmalloc(char *arg)
{
- vmalloc_reserve = memparse(*arg, arg);
+ vmalloc_reserve = memparse(arg, NULL);
if (vmalloc_reserve < SZ_16M) {
vmalloc_reserve = SZ_16M;
@@ -687,8 +687,9 @@ static void __init early_vmalloc(char **arg)
"vmalloc area is too big, limiting to %luMB\n",
vmalloc_reserve >> 20);
}
+ return 0;
}
-__early_param("vmalloc=", early_vmalloc);
+early_param("vmalloc", early_vmalloc);
#define VMALLOC_MIN (void *)(VMALLOC_END - vmalloc_reserve)
diff --git a/arch/arm/mm/nommu.c b/arch/arm/mm/nommu.c
index 374a8311bc8..9bfeb6b9509 100644
--- a/arch/arm/mm/nommu.c
+++ b/arch/arm/mm/nommu.c
@@ -74,6 +74,12 @@ void __iomem *__arm_ioremap_pfn(unsigned long pfn, unsigned long offset,
}
EXPORT_SYMBOL(__arm_ioremap_pfn);
+void __iomem *__arm_ioremap_pfn_caller(unsigned long pfn, unsigned long offset,
+ size_t size, unsigned int mtype, void *caller)
+{
+ return __arm_ioremap_pfn(pfn, offset, size, mtype);
+}
+
void __iomem *__arm_ioremap(unsigned long phys_addr, size_t size,
unsigned int mtype)
{
@@ -81,6 +87,12 @@ void __iomem *__arm_ioremap(unsigned long phys_addr, size_t size,
}
EXPORT_SYMBOL(__arm_ioremap);
+void __iomem *__arm_ioremap(unsigned long phys_addr, size_t size,
+ unsigned int mtype, void *caller)
+{
+ return __arm_ioremap(phys_addr, size, mtype);
+}
+
void __iounmap(volatile void __iomem *addr)
{
}
diff --git a/arch/arm/plat-iop/io.c b/arch/arm/plat-iop/io.c
index ed0bbece0d6..e15bc17db90 100644
--- a/arch/arm/plat-iop/io.c
+++ b/arch/arm/plat-iop/io.c
@@ -34,7 +34,8 @@ void * __iomem __iop3xx_ioremap(unsigned long cookie, size_t size,
retval = (void *) IOP3XX_PMMR_PHYS_TO_VIRT(cookie);
break;
default:
- retval = __arm_ioremap(cookie, size, mtype);
+ retval = __arm_ioremap_caller(cookie, size, mtype,
+ __builtin_return_address(0));
}
return retval;
diff --git a/arch/arm/plat-mxc/include/mach/vmalloc.h b/arch/arm/plat-mxc/include/mach/vmalloc.h
index 62d97623412..44243a27843 100644
--- a/arch/arm/plat-mxc/include/mach/vmalloc.h
+++ b/arch/arm/plat-mxc/include/mach/vmalloc.h
@@ -21,6 +21,6 @@
#define __ASM_ARCH_MXC_VMALLOC_H__
/* vmalloc ending address */
-#define VMALLOC_END 0xF4000000
+#define VMALLOC_END 0xf4000000UL
#endif /* __ASM_ARCH_MXC_VMALLOC_H__ */
diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig
index e2ea04a4c8a..2e3eec66086 100644
--- a/arch/arm/plat-omap/Kconfig
+++ b/arch/arm/plat-omap/Kconfig
@@ -22,6 +22,7 @@ config ARCH_OMAP3
bool "TI OMAP3"
select CPU_V7
select COMMON_CLKDEV
+ select ARM_L1_CACHE_SHIFT_6
config ARCH_OMAP4
bool "TI OMAP4"
diff --git a/arch/arm/plat-omap/include/plat/omap44xx.h b/arch/arm/plat-omap/include/plat/omap44xx.h
index ef870de43c2..c7d628ecb46 100644
--- a/arch/arm/plat-omap/include/plat/omap44xx.h
+++ b/arch/arm/plat-omap/include/plat/omap44xx.h
@@ -40,6 +40,7 @@
#define OMAP44XX_GIC_CPU_BASE 0x48240100
#define OMAP44XX_SCU_BASE 0x48240000
#define OMAP44XX_LOCAL_TWD_BASE 0x48240600
+#define OMAP44XX_L2CACHE_BASE 0x48242000
#define OMAP44XX_WKUPGEN_BASE 0x48281000
#define OMAP44XX_MAILBOX_BASE (L4_44XX_BASE + 0xF4000)
diff --git a/arch/arm/plat-omap/io.c b/arch/arm/plat-omap/io.c
index 0cfd54f519c..4cbd4fb3232 100644
--- a/arch/arm/plat-omap/io.c
+++ b/arch/arm/plat-omap/io.c
@@ -128,7 +128,7 @@ void __iomem *omap_ioremap(unsigned long p, size_t size, unsigned int type)
return XLATE(p, L4_EMU_44XX_PHYS, L4_EMU_44XX_VIRT);
}
#endif
- return __arm_ioremap(p, size, type);
+ return __arm_ioremap_caller(p, size, type, __builtin_return_address(0));
}
EXPORT_SYMBOL(omap_ioremap);
diff --git a/arch/arm/plat-s3c/include/mach/vmalloc.h b/arch/arm/plat-s3c/include/mach/vmalloc.h
index bfd2ca6e307..299d95f365c 100644
--- a/arch/arm/plat-s3c/include/mach/vmalloc.h
+++ b/arch/arm/plat-s3c/include/mach/vmalloc.h
@@ -15,6 +15,6 @@
#ifndef __ASM_ARCH_VMALLOC_H
#define __ASM_ARCH_VMALLOC_H
-#define VMALLOC_END (0xE0000000)
+#define VMALLOC_END (0xe0000000UL)
#endif /* __ASM_ARCH_VMALLOC_H */
diff --git a/arch/arm/plat-stmp3xxx/include/mach/vmalloc.h b/arch/arm/plat-stmp3xxx/include/mach/vmalloc.h
index 541b880c186..943c1a29d64 100644
--- a/arch/arm/plat-stmp3xxx/include/mach/vmalloc.h
+++ b/arch/arm/plat-stmp3xxx/include/mach/vmalloc.h
@@ -9,4 +9,4 @@
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
-#define VMALLOC_END (0xF0000000)
+#define VMALLOC_END 0xf0000000UL
diff --git a/arch/arm/vfp/vfpmodule.c b/arch/arm/vfp/vfpmodule.c
index f60a5400a25..def19f83d81 100644
--- a/arch/arm/vfp/vfpmodule.c
+++ b/arch/arm/vfp/vfpmodule.c
@@ -430,7 +430,11 @@ static inline void vfp_pm_init(void) { }
* saved one. This function is used by the ptrace mechanism.
*/
#ifdef CONFIG_SMP
-void vfp_sync_state(struct thread_info *thread)
+void vfp_sync_hwstate(struct thread_info *thread)
+{
+}
+
+void vfp_flush_hwstate(struct thread_info *thread)
{
/*
* On SMP systems, the VFP state is automatically saved at every
@@ -441,35 +445,48 @@ void vfp_sync_state(struct thread_info *thread)
thread->vfpstate.hard.cpu = NR_CPUS;
}
#else
-void vfp_sync_state(struct thread_info *thread)
+void vfp_sync_hwstate(struct thread_info *thread)
{
unsigned int cpu = get_cpu();
- u32 fpexc = fmrx(FPEXC);
/*
- * If VFP is enabled, the previous state was already saved and
- * last_VFP_context updated.
+ * If the thread we're interested in is the current owner of the
+ * hardware VFP state, then we need to save its state.
*/
- if (fpexc & FPEXC_EN)
- goto out;
+ if (last_VFP_context[cpu] == &thread->vfpstate) {
+ u32 fpexc = fmrx(FPEXC);
- if (!last_VFP_context[cpu])
- goto out;
+ /*
+ * Save the last VFP state on this CPU.
+ */
+ fmxr(FPEXC, fpexc | FPEXC_EN);
+ vfp_save_state(&thread->vfpstate, fpexc | FPEXC_EN);
+ fmxr(FPEXC, fpexc);
+ }
- /*
- * Save the last VFP state on this CPU.
- */
- fmxr(FPEXC, fpexc | FPEXC_EN);
- vfp_save_state(last_VFP_context[cpu], fpexc);
- fmxr(FPEXC, fpexc);
+ put_cpu();
+}
+
+void vfp_flush_hwstate(struct thread_info *thread)
+{
+ unsigned int cpu = get_cpu();
/*
- * Set the context to NULL to force a reload the next time the thread
- * uses the VFP.
+ * If the thread we're interested in is the current owner of the
+ * hardware VFP state, then we need to save its state.
*/
- last_VFP_context[cpu] = NULL;
+ if (last_VFP_context[cpu] == &thread->vfpstate) {
+ u32 fpexc = fmrx(FPEXC);
+
+ fmxr(FPEXC, fpexc & ~FPEXC_EN);
+
+ /*
+ * Set the context to NULL to force a reload the next time
+ * the thread uses the VFP.
+ */
+ last_VFP_context[cpu] = NULL;
+ }
-out:
put_cpu();
}
#endif
diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c
index ef7adc8135d..ce6c35333ff 100644
--- a/drivers/serial/amba-pl011.c
+++ b/drivers/serial/amba-pl011.c
@@ -71,6 +71,7 @@ struct uart_amba_port {
unsigned int im; /* interrupt mask */
unsigned int old_status;
unsigned int ifls; /* vendor-specific */
+ bool autorts;
};
/* There is by now at least one vendor with differing details, so handle it */
@@ -308,6 +309,11 @@ static void pl011_set_mctrl(struct uart_port *port, unsigned int mctrl)
TIOCMBIT(TIOCM_OUT1, UART011_CR_OUT1);
TIOCMBIT(TIOCM_OUT2, UART011_CR_OUT2);
TIOCMBIT(TIOCM_LOOP, UART011_CR_LBE);
+
+ if (uap->autorts) {
+ /* We need to disable auto-RTS if we want to turn RTS off */
+ TIOCMBIT(TIOCM_RTS, UART011_CR_RTSEN);
+ }
#undef TIOCMBIT
writew(cr, uap->port.membase + UART011_CR);
@@ -437,6 +443,7 @@ static void pl011_shutdown(struct uart_port *port)
/*
* disable the port
*/
+ uap->autorts = false;
writew(UART01x_CR_UARTEN | UART011_CR_TXE, uap->port.membase + UART011_CR);
/*
@@ -456,6 +463,7 @@ static void
pl011_set_termios(struct uart_port *port, struct ktermios *termios,
struct ktermios *old)
{
+ struct uart_amba_port *uap = (struct uart_amba_port *)port;
unsigned int lcr_h, old_cr;
unsigned long flags;
unsigned int baud, quot;
@@ -532,6 +540,17 @@ pl011_set_termios(struct uart_port *port, struct ktermios *termios,
old_cr = readw(port->membase + UART011_CR);
writew(0, port->membase + UART011_CR);
+ if (termios->c_cflag & CRTSCTS) {
+ if (old_cr & UART011_CR_RTS)
+ old_cr |= UART011_CR_RTSEN;
+
+ old_cr |= UART011_CR_CTSEN;
+ uap->autorts = true;
+ } else {
+ old_cr &= ~(UART011_CR_CTSEN | UART011_CR_RTSEN);
+ uap->autorts = false;
+ }
+
/* Set baud rate */
writew(quot & 0x3f, port->membase + UART011_FBRD);
writew(quot >> 6, port->membase + UART011_IBRD);