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authorRichard Kuo <rkuo@codeaurora.org>2013-03-22 16:05:40 -0500
committerRichard Kuo <rkuo@codeaurora.org>2013-04-30 19:40:22 -0500
commit8f5a0b9dffeb3cb94f2b0622b6fe0717512ef54b (patch)
treed85d4b7531645b4b189fb88dd8d6b4b62072284b /arch/hexagon/include
parente0025a72c37ca404fbf31d569439c20bfb04295e (diff)
downloadlinux-linaro-stable-8f5a0b9dffeb3cb94f2b0622b6fe0717512ef54b.tar.gz
Hexagon: add support for ARCH_PFN_OFFSET
Add support for loading the kernel at a physical offset. The offset should still be 4M aligned. Signed-off-by: Richard Kuo <rkuo@codeaurora.org>
Diffstat (limited to 'arch/hexagon/include')
-rw-r--r--arch/hexagon/include/asm/hexagon_vm.h47
-rw-r--r--arch/hexagon/include/asm/mem-layout.h21
-rw-r--r--arch/hexagon/include/asm/page.h5
3 files changed, 42 insertions, 31 deletions
diff --git a/arch/hexagon/include/asm/hexagon_vm.h b/arch/hexagon/include/asm/hexagon_vm.h
index c144bee6cabe..6b81e4d5ecb1 100644
--- a/arch/hexagon/include/asm/hexagon_vm.h
+++ b/arch/hexagon/include/asm/hexagon_vm.h
@@ -31,10 +31,26 @@
* for tracing/debugging.
*/
-/*
- * Lets make this stuff visible only if configured,
- * so we can unconditionally include the file.
- */
+#define HVM_TRAP1_VMVERSION 0
+#define HVM_TRAP1_VMRTE 1
+#define HVM_TRAP1_VMSETVEC 2
+#define HVM_TRAP1_VMSETIE 3
+#define HVM_TRAP1_VMGETIE 4
+#define HVM_TRAP1_VMINTOP 5
+#define HVM_TRAP1_VMCLRMAP 10
+#define HVM_TRAP1_VMNEWMAP 11
+#define HVM_TRAP1_FORMERLY_VMWIRE 12
+#define HVM_TRAP1_VMCACHE 13
+#define HVM_TRAP1_VMGETTIME 14
+#define HVM_TRAP1_VMSETTIME 15
+#define HVM_TRAP1_VMWAIT 16
+#define HVM_TRAP1_VMYIELD 17
+#define HVM_TRAP1_VMSTART 18
+#define HVM_TRAP1_VMSTOP 19
+#define HVM_TRAP1_VMVPID 20
+#define HVM_TRAP1_VMSETREGS 21
+#define HVM_TRAP1_VMGETREGS 22
+#define HVM_TRAP1_VMTIMEROP 24
#ifndef __ASSEMBLY__
@@ -175,25 +191,6 @@ static inline long __vmintop_clear(long i)
#else /* Only assembly code should reference these */
-#define HVM_TRAP1_VMRTE 1
-#define HVM_TRAP1_VMSETVEC 2
-#define HVM_TRAP1_VMSETIE 3
-#define HVM_TRAP1_VMGETIE 4
-#define HVM_TRAP1_VMINTOP 5
-#define HVM_TRAP1_VMCLRMAP 10
-#define HVM_TRAP1_VMNEWMAP 11
-#define HVM_TRAP1_FORMERLY_VMWIRE 12
-#define HVM_TRAP1_VMCACHE 13
-#define HVM_TRAP1_VMGETTIME 14
-#define HVM_TRAP1_VMSETTIME 15
-#define HVM_TRAP1_VMWAIT 16
-#define HVM_TRAP1_VMYIELD 17
-#define HVM_TRAP1_VMSTART 18
-#define HVM_TRAP1_VMSTOP 19
-#define HVM_TRAP1_VMVPID 20
-#define HVM_TRAP1_VMSETREGS 21
-#define HVM_TRAP1_VMGETREGS 22
-
#endif /* __ASSEMBLY__ */
/*
@@ -224,6 +221,8 @@ static inline long __vmintop_clear(long i)
#define HVM_VMEST_UM_MSK 1
#define HVM_VMEST_IE_SFT 30
#define HVM_VMEST_IE_MSK 1
+#define HVM_VMEST_SS_SFT 29
+#define HVM_VMEST_SS_MSK 1
#define HVM_VMEST_EVENTNUM_SFT 16
#define HVM_VMEST_EVENTNUM_MSK 0xff
#define HVM_VMEST_CAUSE_SFT 0
@@ -260,6 +259,8 @@ static inline long __vmintop_clear(long i)
#define HVM_GE_C_INVI 0x15
#define HVM_GE_C_PRIVI 0x1B
#define HVM_GE_C_XMAL 0x1C
+#define HVM_GE_C_WREG 0x1D
+#define HVM_GE_C_PCAL 0x1E
#define HVM_GE_C_RMAL 0x20
#define HVM_GE_C_WMAL 0x21
#define HVM_GE_C_RPROT 0x22
diff --git a/arch/hexagon/include/asm/mem-layout.h b/arch/hexagon/include/asm/mem-layout.h
index af16e977c55e..1426cd71a1d3 100644
--- a/arch/hexagon/include/asm/mem-layout.h
+++ b/arch/hexagon/include/asm/mem-layout.h
@@ -32,16 +32,25 @@
#define PAGE_OFFSET _AC(0xc0000000, UL)
/*
- * LOAD_ADDRESS is the physical/linear address of where in memory
- * the kernel gets loaded. The 12 least significant bits must be zero (0)
- * due to limitations on setting the EVB
- *
+ * Compiling for a platform that needs a crazy physical offset
+ * (like if the memory starts at 1GB and up) means we need
+ * an actual PHYS_OFFSET. Should be set up in head.S.
*/
-#ifndef LOAD_ADDRESS
-#define LOAD_ADDRESS 0x00000000
+#ifdef CONFIG_HEXAGON_PHYS_OFFSET
+#ifndef __ASSEMBLY__
+extern unsigned long __phys_offset;
+#endif
+#define PHYS_OFFSET __phys_offset
+#endif
+
+#ifndef PHYS_OFFSET
+#define PHYS_OFFSET 0
#endif
+#define PHYS_PFN_OFFSET (PHYS_OFFSET >> PAGE_SHIFT)
+#define ARCH_PFN_OFFSET PHYS_PFN_OFFSET
+
#define TASK_SIZE (PAGE_OFFSET)
/* not sure how these are used yet */
diff --git a/arch/hexagon/include/asm/page.h b/arch/hexagon/include/asm/page.h
index 692adc213429..de1b2871d09c 100644
--- a/arch/hexagon/include/asm/page.h
+++ b/arch/hexagon/include/asm/page.h
@@ -96,8 +96,8 @@ typedef struct page *pgtable_t;
* MIPS says they're only used during mem_init.
* also, check if we need a PHYS_OFFSET.
*/
-#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET)
-#define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET))
+#define __pa(x) ((unsigned long)(x) - PAGE_OFFSET + PHYS_OFFSET)
+#define __va(x) ((void *)((unsigned long)(x) - PHYS_OFFSET + PAGE_OFFSET))
/* The "page frame" descriptor is defined in linux/mm.h */
struct page;
@@ -147,6 +147,7 @@ static inline void clear_page(void *page)
*/
#define kern_addr_valid(addr) (1)
+#include <asm/mem-layout.h>
#include <asm-generic/memory_model.h>
/* XXX Todo: implement assembly-optimized version of getorder. */
#include <asm-generic/getorder.h>