From 456d3d42460c1fc20ba0d27442443fcd63aaac35 Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Fri, 25 May 2012 00:31:56 -0700
Subject: sparc64: Fix several bugs in quad floating point emulation.

UltraSPARC-T2 and later do not use the fp_exception_other trap and do
not set the floating point trap type field in the %fsr at all when you
try to execute an unimplemented FPU operation.

Instead, it uses the illegal_instruction trap and it leaves the
floating point trap type field clear.

So we should not validate the %fsr trap type field when do_mathemu()
is invoked from the illegal instruction handler.

Also, the floating point trap type field is 3 bits, not 4 bits.

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/kernel/traps_64.c  | 12 +++++++-----
 arch/sparc/math-emu/math_64.c | 20 ++++++++++++++------
 2 files changed, 21 insertions(+), 11 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c
index c72fdf55e1c1..3b05e6697710 100644
--- a/arch/sparc/kernel/traps_64.c
+++ b/arch/sparc/kernel/traps_64.c
@@ -2054,7 +2054,7 @@ void do_fpieee(struct pt_regs *regs)
 	do_fpe_common(regs);
 }
 
-extern int do_mathemu(struct pt_regs *, struct fpustate *);
+extern int do_mathemu(struct pt_regs *, struct fpustate *, bool);
 
 void do_fpother(struct pt_regs *regs)
 {
@@ -2068,7 +2068,7 @@ void do_fpother(struct pt_regs *regs)
 	switch ((current_thread_info()->xfsr[0] & 0x1c000)) {
 	case (2 << 14): /* unfinished_FPop */
 	case (3 << 14): /* unimplemented_FPop */
-		ret = do_mathemu(regs, f);
+		ret = do_mathemu(regs, f, false);
 		break;
 	}
 	if (ret)
@@ -2308,10 +2308,12 @@ void do_illegal_instruction(struct pt_regs *regs)
 			} else {
 				struct fpustate *f = FPUSTATE;
 
-				/* XXX maybe verify XFSR bits like
-				 * XXX do_fpother() does?
+				/* On UltraSPARC T2 and later, FPU insns which
+				 * are not implemented in HW signal an illegal
+				 * instruction trap and do not set the FP Trap
+				 * Trap in the %fsr to unimplemented_FPop.
 				 */
-				if (do_mathemu(regs, f))
+				if (do_mathemu(regs, f, true))
 					return;
 			}
 		}
diff --git a/arch/sparc/math-emu/math_64.c b/arch/sparc/math-emu/math_64.c
index 2bbe2f28ad23..1704068da928 100644
--- a/arch/sparc/math-emu/math_64.c
+++ b/arch/sparc/math-emu/math_64.c
@@ -163,7 +163,7 @@ typedef union {
 	u64 q[2];
 } *argp;
 
-int do_mathemu(struct pt_regs *regs, struct fpustate *f)
+int do_mathemu(struct pt_regs *regs, struct fpustate *f, bool illegal_insn_trap)
 {
 	unsigned long pc = regs->tpc;
 	unsigned long tstate = regs->tstate;
@@ -218,7 +218,7 @@ int do_mathemu(struct pt_regs *regs, struct fpustate *f)
 			case FSQRTS: {
 				unsigned long x = current_thread_info()->xfsr[0];
 
-				x = (x >> 14) & 0xf;
+				x = (x >> 14) & 0x7;
 				TYPE(x,1,1,1,1,0,0);
 				break;
 			}
@@ -226,7 +226,7 @@ int do_mathemu(struct pt_regs *regs, struct fpustate *f)
 			case FSQRTD: {
 				unsigned long x = current_thread_info()->xfsr[0];
 
-				x = (x >> 14) & 0xf;
+				x = (x >> 14) & 0x7;
 				TYPE(x,2,1,2,1,0,0);
 				break;
 			}
@@ -357,9 +357,17 @@ int do_mathemu(struct pt_regs *regs, struct fpustate *f)
 	if (type) {
 		argp rs1 = NULL, rs2 = NULL, rd = NULL;
 		
-		freg = (current_thread_info()->xfsr[0] >> 14) & 0xf;
-		if (freg != (type >> 9))
-			goto err;
+		/* Starting with UltraSPARC-T2, the cpu does not set the FP Trap
+		 * Type field in the %fsr to unimplemented_FPop.  Nor does it
+		 * use the fp_exception_other trap.  Instead it signals an
+		 * illegal instruction and leaves the FP trap type field of
+		 * the %fsr unchanged.
+		 */
+		if (!illegal_insn_trap) {
+			int ftt = (current_thread_info()->xfsr[0] >> 14) & 0x7;
+			if (ftt != (type >> 9))
+				goto err;
+		}
 		current_thread_info()->xfsr[0] &= ~0x1c000;
 		freg = ((insn >> 14) & 0x1f);
 		switch (type & 0x3) {
-- 
cgit v1.2.3


From 492c24e5894c65e23b11e5043c7144c2f2310abf Mon Sep 17 00:00:00 2001
From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Sun, 27 May 2012 17:43:48 +0000
Subject: sparc: fix bad merge of sparc Kconfig

Fixes this sparc32 defconfig build error:

timekeeping.c:(.text+0x277c4): undefined reference to `arch_gettimeoffset'

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/Kconfig | 1 -
 1 file changed, 1 deletion(-)

(limited to 'arch')

diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 83bd051754e1..e74ff1377626 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -41,7 +41,6 @@ config SPARC32
 	def_bool !64BIT
 	select GENERIC_ATOMIC64
 	select CLZ_TAB
-	select ARCH_USES_GETTIMEOFFSET
 
 config SPARC64
 	def_bool 64BIT
-- 
cgit v1.2.3


From ec24158eac0ae2786ebf1e0afa8f3664891319ba Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Fri, 25 May 2012 21:20:05 +0000
Subject: sparc32: string and whitespace cleanup in head_32.S

A few strings have been adopted to show more relevant info.

Julian Calaby <julian.calaby@gmail.com> pointed out one
that I would otherwise have missed.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
---
 arch/sparc/kernel/head_32.S | 30 +++++++++++++++---------------
 1 file changed, 15 insertions(+), 15 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/kernel/head_32.S b/arch/sparc/kernel/head_32.S
index a0f5c20e4b9c..693fb080f933 100644
--- a/arch/sparc/kernel/head_32.S
+++ b/arch/sparc/kernel/head_32.S
@@ -46,8 +46,8 @@ cputypvar:
 
 	.align 4
 
-sun4c_notsup:
-	.asciz	"Sparc-Linux sun4/sun4c support does no longer exist.\n\n"
+notsup:
+	.asciz	"Sparc-Linux sun4/sun4c or MMU-less not supported\n\n"
 	.align 4
 
 sun4e_notsup:
@@ -123,7 +123,7 @@ current_pc:
 		tst	%o0
 		be	no_sun4u_here
 		 mov	%g4, %o7		/* Previous %o7. */
-	
+
 		mov	%o0, %l0		! stash away romvec
 		mov	%o0, %g7		! put it here too
 		mov	%o1, %l1		! stash away debug_vec too
@@ -132,7 +132,7 @@ current_pc:
 		set	current_pc, %g5
 		cmp	%g3, %g5
 		be	already_mapped
-		 nop 
+		 nop
 
 		/* %l6 will hold the offset we have to subtract
 		 * from absolute symbols in order to access areas
@@ -194,7 +194,7 @@ copy_prom_done:
 
 halt_sun4_or_sun4c:
 		ld	[%g7 + 0x68], %o1
-		set	sun4c_notsup, %o0
+		set	notsup, %o0
 		sub	%o0, %l6, %o0
 		call	%o1
 		 nop
@@ -230,12 +230,12 @@ srmmu_remap:
 		subcc	%g3, 0x0, %g0
 		bnz	srmmu_nviking			! is in mbus mode
 		 nop
-		
+
 		rd	%psr, %g3			! DO NOT TOUCH %g3
 		andn	%g3, PSR_ET, %g2
 		wr	%g2, 0x0, %psr
 		WRITE_PAUSE
-		
+
 		/* Get context table pointer, then convert to
 		 * a physical address, which is 36 bits.
 		 */
@@ -258,12 +258,12 @@ srmmu_remap:
 		lda	[%g4] ASI_M_BYPASS, %o1		! This is a level 1 ptr
 		srl	%o1, 0x4, %o1			! Clear low 4 bits
 		sll	%o1, 0x8, %o1			! Make physical
-		
+
 		/* Ok, pull in the PTD. */
 		lda	[%o1] ASI_M_BYPASS, %o2		! This is the 0x0 16MB pgd
 
 		/* Calculate to KERNBASE entry. */
-		add	%o1, KERNBASE >> (SRMMU_PGDIR_SHIFT - 2), %o3		
+		add	%o1, KERNBASE >> (SRMMU_PGDIR_SHIFT - 2), %o3
 
 		/* Poke the entry into the calculated address. */
 		sta	%o2, [%o3] ASI_M_BYPASS
@@ -480,7 +480,7 @@ continue_boot:
 		set	__bss_start , %o0	! First address of BSS
 		set	_end , %o1		! Last address of BSS
 		add	%o0, 0x1, %o0
-1:	
+1:
 		stb	%g0, [%o0]
 		subcc	%o0, %o1, %g0
 		bl	1b
@@ -546,7 +546,7 @@ continue_boot:
 		set	dest, %g2; \
 		ld	[%g5], %g4; \
 		st	%g4, [%g2];
-	
+
 		/* Patch for window spills... */
 		PATCH_INSN(spnwin_patch1_7win, spnwin_patch1)
 		PATCH_INSN(spnwin_patch2_7win, spnwin_patch2)
@@ -597,7 +597,7 @@ continue_boot:
 		st	%g4, [%g5 + 0x18]
 		st	%g4, [%g5 + 0x1c]
 
-2:		
+2:
 		sethi	%hi(nwindows), %g4
 		st	%g3, [%g4 + %lo(nwindows)]	! store final value
 		sub	%g3, 0x1, %g3
@@ -626,9 +626,9 @@ continue_boot:
 		call	prom_init
 		 nop
 
-		call 	start_kernel
+		call	start_kernel
 		 nop
-	
+
 		/* We should not get here. */
 		call	halt_me
 		 nop
@@ -659,7 +659,7 @@ sun4u_5:
 		.asciz "write"
 		.align	4
 sun4u_6:
-        	.asciz  "\n\rOn sun4u you have to use UltraLinux (64bit) kernel\n\rand not a 32bit sun4[cdem] version\n\r\n\r"
+		.asciz  "\n\rOn sun4u you have to use sparc64 kernel\n\rand not a sparc32 version\n\r\n\r"
 sun4u_6e:
 		.align	4
 sun4u_7:
-- 
cgit v1.2.3


From 7b372d6582ca3bf41a1af9f168f3a852f3d7b21d Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Fri, 25 May 2012 21:20:06 +0000
Subject: sparc32: implement proper LEON support in head_32 (before highmem)

Use PSR to check if the CPU is LEON and jump to
LEON specific code in this case.

Added a few constants to psr.h to increase readability.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
---
 arch/sparc/include/asm/psr.h |  6 +++++
 arch/sparc/kernel/head_32.S  | 58 +++++++++++++++++++++++++++++++++++---------
 2 files changed, 53 insertions(+), 11 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/include/asm/psr.h b/arch/sparc/include/asm/psr.h
index b8c0e5f0a66b..c02c735d4ebe 100644
--- a/arch/sparc/include/asm/psr.h
+++ b/arch/sparc/include/asm/psr.h
@@ -35,6 +35,12 @@
 #define PSR_VERS    0x0f000000         /* cpu-version field          */
 #define PSR_IMPL    0xf0000000         /* cpu-implementation field   */
 
+#define PSR_IMPL_SHIFT		28
+#define PSR_IMPL_SHIFTED_MASK	0xf
+
+#define PSR_IMPL_TI		0x4
+#define PSR_IMPL_LEON		0xf
+
 #ifdef __KERNEL__
 
 #ifndef __ASSEMBLY__
diff --git a/arch/sparc/kernel/head_32.S b/arch/sparc/kernel/head_32.S
index 693fb080f933..5a418d32d94c 100644
--- a/arch/sparc/kernel/head_32.S
+++ b/arch/sparc/kernel/head_32.S
@@ -192,7 +192,7 @@ copy_prom_done:
 		bne	not_a_sun4
 		 nop
 
-halt_sun4_or_sun4c:
+halt_notsup:
 		ld	[%g7 + 0x68], %o1
 		set	notsup, %o0
 		sub	%o0, %l6, %o0
@@ -202,18 +202,31 @@ halt_sun4_or_sun4c:
 		 nop
 
 not_a_sun4:
+		/* It looks like this is a machine we support.
+		 * Now find out what MMU we are dealing with
+		 * LEON - identified by the psr.impl field
+		 * Viking - identified by the psr.impl field
+		 * In all other cases a sun4m srmmu.
+		 * We check that the MMU is enabled in all cases.
+		 */
+
+		/* Check if this is a LEON CPU */
+		rd	%psr, %g3
+		srl	%g3, PSR_IMPL_SHIFT, %g3
+		and	%g3, PSR_IMPL_SHIFTED_MASK, %g3
+		cmp	%g3, PSR_IMPL_LEON
+		be	leon_remap		/* It is a LEON - jump */
+		 nop
+
+		/* Sanity-check, is MMU enabled */
 		lda	[%g0] ASI_M_MMUREGS, %g1
 		andcc	%g1, 1, %g0
-		be	halt_sun4_or_sun4c
+		be	halt_notsup
 		 nop
 
-srmmu_remap:
-		/* First, check for a viking (TI) module. */
-		set	0x40000000, %g2
-		rd	%psr, %g3
-		and	%g2, %g3, %g3
-		subcc	%g3, 0x0, %g0
-		bz	srmmu_nviking
+		/* Check for a viking (TI) module. */
+		cmp	%g3, PSR_IMPL_TI
+		bne	srmmu_not_viking
 		 nop
 
 		/* Figure out what kind of viking we are on.
@@ -228,7 +241,7 @@ srmmu_remap:
 		lda	[%g0] ASI_M_MMUREGS, %g3	! peek in the control reg
 		and	%g2, %g3, %g3
 		subcc	%g3, 0x0, %g0
-		bnz	srmmu_nviking			! is in mbus mode
+		bnz	srmmu_not_viking			! is in mbus mode
 		 nop
 
 		rd	%psr, %g3			! DO NOT TOUCH %g3
@@ -293,12 +306,12 @@ srmmu_remap:
 		b	go_to_highmem
 		 nop
 
+srmmu_not_viking:
 		/* This works on viking's in Mbus mode and all
 		 * other MBUS modules.  It is virtually the same as
 		 * the above madness sans turning traps off and flipping
 		 * the AC bit.
 		 */
-srmmu_nviking:
 		set	AC_M_CTPR, %g1
 		lda	[%g1] ASI_M_MMUREGS, %g1	! get ctx table ptr
 		sll	%g1, 0x4, %g1			! make physical addr
@@ -313,6 +326,29 @@ srmmu_nviking:
 		 nop					! wheee....
 
 
+leon_remap:
+		/* Sanity-check, is MMU enabled */
+		lda	[%g0] ASI_LEON_MMUREGS, %g1
+		andcc	%g1, 1, %g0
+		be	halt_notsup
+		 nop
+
+		/* Same code as in the srmmu_not_viking case,
+		 * with the LEON ASI for mmuregs
+		 */
+		set	AC_M_CTPR, %g1
+		lda	[%g1] ASI_LEON_MMUREGS, %g1	! get ctx table ptr
+		sll	%g1, 0x4, %g1			! make physical addr
+		lda	[%g1] ASI_M_BYPASS, %g1		! ptr to level 1 pg_table
+		srl	%g1, 0x4, %g1
+		sll	%g1, 0x8, %g1			! make phys addr for l1 tbl
+
+		lda	[%g1] ASI_M_BYPASS, %g2		! get level1 entry for 0x0
+		add	%g1, KERNBASE >> (SRMMU_PGDIR_SHIFT - 2), %g3
+		sta	%g2, [%g3] ASI_M_BYPASS		! place at KERNBASE entry
+		b	go_to_highmem
+		 nop					! wheee....
+
 /* Now do a non-relative jump so that PC is in high-memory */
 go_to_highmem:
 		set	execute_in_high_mem, %g1
-- 
cgit v1.2.3


From 30005efc9818d715cc72f15e962d06457c529783 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Fri, 25 May 2012 21:20:07 +0000
Subject: sparc32: implement proper LEON support in head_32 (after highmem)

We use the compatibility property to determine the
sun models. For leon we use psr.impl and ignore the
result of the getprops call.

Include a hack to allow build as the support code
is not yet converted.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
---
 arch/sparc/kernel/head_32.S | 58 ++++++++++++++++++++++++++-------------------
 1 file changed, 33 insertions(+), 25 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/kernel/head_32.S b/arch/sparc/kernel/head_32.S
index 5a418d32d94c..f22a729dfb3d 100644
--- a/arch/sparc/kernel/head_32.S
+++ b/arch/sparc/kernel/head_32.S
@@ -372,36 +372,26 @@ execute_in_high_mem:
 		sethi	%hi(linux_dbvec), %g1
 		st	%o1, [%g1 + %lo(linux_dbvec)]
 
-/* Get the machine type via the mysterious romvec node operations. */
-
-		add	%g7, 0x1c, %l1
-		ld	[%l1], %l0
-		ld	[%l0], %l0
-		call	%l0
-		 or	%g0, %g0, %o0		! next_node(0) = first_node
-		or	%o0, %g0, %g6
-
-		sethi	%hi(cputypvar), %o1	! First node has cpu-arch
-		or	%o1, %lo(cputypvar), %o1
-		sethi	%hi(cputypval), %o2	! information, the string
-		or	%o2, %lo(cputypval), %o2
-		ld	[%l1], %l0		! 'compatible' tells
-		ld	[%l0 + 0xc], %l0	! that we want 'sun4x' where
-		call	%l0			! x is one of 'm', 'd' or 'e'.
-		 nop				! %o2 holds pointer
-						! to a buf where above string
-						! will get stored by the prom.
+		/* Check if this is a LEON CPU.
+		 * Skip getprops call if it is
+		 */
+		srl	%g3, PSR_IMPL_SHIFT, %g3
+		and	%g3, PSR_IMPL_SHIFTED_MASK, %g3
+		cmp	%g3, PSR_IMPL_LEON
+		 bne	get_cputype
 
-#ifdef CONFIG_SPARC_LEON
-	        /* no cpu-type check is needed, it is a SPARC-LEON */
 
+		/* LEON CPU - set boot_cpu_id */
 		sethi	%hi(boot_cpu_id), %g2	! boot-cpu index
 
 #ifdef CONFIG_SMP
 		ldub	[%g2 + %lo(boot_cpu_id)], %g1
 		cmp	%g1, 0xff		! unset means first CPU
+#ifdef CONFIG_SPARC_LEON
+		/* XXX Hack to allow build - remove ifdef later */
 		bne	leon_smp_cpu_startup	! continue only with master
 		 nop
+#endif
 #endif
 		/* Get CPU-ID from most significant 4-bit of ASR17 */
 		rd     %asr17, %g1
@@ -412,12 +402,30 @@ execute_in_high_mem:
 
 		ba continue_boot
 		 nop
-#endif
+
+/* Get the machine type via the mysterious romvec node operations. */
+get_cputype:
+		add	%g7, 0x1c, %l1
+		ld	[%l1], %l0
+		ld	[%l0], %l0
+		call	%l0
+		 or	%g0, %g0, %o0		! next_node(0) = first_node
+		or	%o0, %g0, %g6
+
+		sethi	%hi(cputypvar), %o1	! First node has cpu-arch
+		or	%o1, %lo(cputypvar), %o1
+		sethi	%hi(cputypval), %o2	! information, the string
+		or	%o2, %lo(cputypval), %o2
+		ld	[%l1], %l0		! 'compatible' tells
+		ld	[%l0 + 0xc], %l0	! that we want 'sun4x' where
+		call	%l0			! x is one of 'm', 'd' or 'e'.
+		 nop				! %o2 holds pointer
+						! to a buf where above string
+						! will get stored by the prom.
 
 /* Check to cputype. We may be booted on a sun4u (64 bit box),
  * and sun4d needs special treatment.
  */
-
 		set	cputypval, %o2
 		ldub	[%o2 + 0x4], %l1
 
@@ -467,9 +475,9 @@ sun4m_init:
 /* This sucks, apparently this makes Vikings call prom panic, will fix later */
 2:
 		rd	%psr, %o1
-		srl	%o1, 28, %o1		! Get a type of the CPU
+		srl	%o1, PSR_IMPL_SHIFT, %o1	! Get a type of the CPU
 
-		subcc	%o1, 4, %g0		! TI: Viking or MicroSPARC
+		subcc	%o1, PSR_IMPL_TI, %g0		! TI: Viking or MicroSPARC
 		be	continue_boot
 		 nop
 
-- 
cgit v1.2.3


From 4efb55e6916628fde549b0ef1c2830593ccf19c4 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Fri, 25 May 2012 21:20:08 +0000
Subject: sparc32: introduce sparc32_start_kernel called from head_32.S

This gives us a C hook before we call start_kernel()

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
---
 arch/sparc/kernel/head_32.S  | 10 ++--------
 arch/sparc/kernel/kernel.h   |  3 +++
 arch/sparc/kernel/setup_32.c | 10 ++++++++++
 3 files changed, 15 insertions(+), 8 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/kernel/head_32.S b/arch/sparc/kernel/head_32.S
index f22a729dfb3d..6c6b8c27c1b8 100644
--- a/arch/sparc/kernel/head_32.S
+++ b/arch/sparc/kernel/head_32.S
@@ -661,16 +661,10 @@ continue_boot:
 		wr	%g3, PSR_ET, %psr
 		WRITE_PAUSE
 
-		/* First we call prom_init() to set up PROMLIB, then
-		 * off to start_kernel().
-		 */
-
+		/* Call sparc32_start_kernel(struct linux_romvec *rp) */
 		sethi	%hi(prom_vector_p), %g5
 		ld	[%g5 + %lo(prom_vector_p)], %o0
-		call	prom_init
-		 nop
-
-		call	start_kernel
+		call	sparc32_start_kernel
 		 nop
 
 		/* We should not get here. */
diff --git a/arch/sparc/kernel/kernel.h b/arch/sparc/kernel/kernel.h
index a86372d34587..291bb5de9ce0 100644
--- a/arch/sparc/kernel/kernel.h
+++ b/arch/sparc/kernel/kernel.h
@@ -26,6 +26,9 @@ static inline unsigned long kimage_addr_to_ra(const char *p)
 #endif
 
 #ifdef CONFIG_SPARC32
+/* setup_32.c */
+void sparc32_start_kernel(struct linux_romvec *rp);
+
 /* cpu.c */
 extern void cpu_probe(void);
 
diff --git a/arch/sparc/kernel/setup_32.c b/arch/sparc/kernel/setup_32.c
index c052313f4dc5..68dd63dea36f 100644
--- a/arch/sparc/kernel/setup_32.c
+++ b/arch/sparc/kernel/setup_32.c
@@ -32,6 +32,7 @@
 #include <linux/cpu.h>
 #include <linux/kdebug.h>
 #include <linux/export.h>
+#include <linux/start_kernel.h>
 
 #include <asm/io.h>
 #include <asm/processor.h>
@@ -244,6 +245,15 @@ struct tt_entry *sparc_ttable;
 
 struct pt_regs fake_swapper_regs;
 
+/* Called from head_32.S - before we have setup anything
+ * in the kernel. Be very careful with what you do here.
+ */
+void __init sparc32_start_kernel(struct linux_romvec *rp)
+{
+	prom_init(rp);
+	start_kernel();
+}
+
 void __init setup_arch(char **cmdline_p)
 {
 	int i;
-- 
cgit v1.2.3


From 5b8b93c4ab17a250a35e6db1cce094bf599a21c6 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Fri, 25 May 2012 21:20:09 +0000
Subject: sparc32: add support for run-time patching of leon/sun single
 instructions

This will be used to handle that MMUREGS has different ASI for SUN and LEON.
This is the infrastructure only - users will come later.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
---
 arch/sparc/include/asm/asmmacro.h | 22 +++++++++++++++
 arch/sparc/include/asm/sections.h |  3 ++
 arch/sparc/kernel/setup_32.c      | 58 ++++++++++++++++++++++++++++-----------
 arch/sparc/kernel/vmlinux.lds.S   |  5 ++++
 4 files changed, 72 insertions(+), 16 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/include/asm/asmmacro.h b/arch/sparc/include/asm/asmmacro.h
index 02a172fb193a..a0e28ef02558 100644
--- a/arch/sparc/include/asm/asmmacro.h
+++ b/arch/sparc/include/asm/asmmacro.h
@@ -20,4 +20,26 @@
 /* All traps low-level code here must end with this macro. */
 #define RESTORE_ALL b ret_trap_entry; clr %l6;
 
+/* Support for run-time patching of single instructions.
+ * This is used to handle the differences in the ASI for
+ * MMUREGS for LEON and SUN.
+ *
+ * Sample:
+ * LEON_PI(lda [%g0] ASI_LEON_MMUREGS, %o0
+ * SUN_PI_(lda [%g0] ASI_M_MMUREGS, %o0
+ * PI == Patch Instruction
+ *
+ * For LEON we will use the first variant,
+ * and for all other we will use the SUN variant.
+ * The order is important.
+ */
+#define LEON_PI(...)				\
+662:	__VA_ARGS__
+
+#define SUN_PI_(...)				\
+	.section .leon_1insn_patch, "ax";	\
+	.word 662b;				\
+	__VA_ARGS__;				\
+	.previous
+
 #endif /* !(_SPARC_ASMMACRO_H) */
diff --git a/arch/sparc/include/asm/sections.h b/arch/sparc/include/asm/sections.h
index 0b0553bbd8a0..f300d1a9b2b6 100644
--- a/arch/sparc/include/asm/sections.h
+++ b/arch/sparc/include/asm/sections.h
@@ -7,4 +7,7 @@
 /* sparc entry point */
 extern char _start[];
 
+extern char __leon_1insn_patch[];
+extern char __leon_1insn_patch_end[];
+
 #endif
diff --git a/arch/sparc/kernel/setup_32.c b/arch/sparc/kernel/setup_32.c
index 68dd63dea36f..efe3e64bba38 100644
--- a/arch/sparc/kernel/setup_32.c
+++ b/arch/sparc/kernel/setup_32.c
@@ -46,6 +46,7 @@
 #include <asm/cpudata.h>
 #include <asm/setup.h>
 #include <asm/cacheflush.h>
+#include <asm/sections.h>
 
 #include "kernel.h"
 
@@ -238,11 +239,34 @@ static void __init per_cpu_patch(void)
 	}
 }
 
+struct leon_1insn_patch_entry {
+	unsigned int addr;
+	unsigned int insn;
+};
+
 enum sparc_cpu sparc_cpu_model;
 EXPORT_SYMBOL(sparc_cpu_model);
 
-struct tt_entry *sparc_ttable;
+static __init void leon_patch(void)
+{
+	struct leon_1insn_patch_entry *start = (void *)__leon_1insn_patch;
+	struct leon_1insn_patch_entry *end = (void *)__leon_1insn_patch_end;
+
+	/* Default instruction is leon - no patching */
+	if (sparc_cpu_model == sparc_leon)
+		return;
+
+	while (start < end) {
+		unsigned long addr = start->addr;
+
+		*(unsigned int *)(addr) = start->insn;
+		flushi(addr);
+
+		start++;
+	}
+}
 
+struct tt_entry *sparc_ttable;
 struct pt_regs fake_swapper_regs;
 
 /* Called from head_32.S - before we have setup anything
@@ -251,6 +275,23 @@ struct pt_regs fake_swapper_regs;
 void __init sparc32_start_kernel(struct linux_romvec *rp)
 {
 	prom_init(rp);
+
+	/* Set sparc_cpu_model */
+	sparc_cpu_model = sun_unknown;
+	if (!strcmp(&cputypval[0], "sun4m"))
+		sparc_cpu_model = sun4m;
+	if (!strcmp(&cputypval[0], "sun4s"))
+		sparc_cpu_model = sun4m; /* CP-1200 with PROM 2.30 -E */
+	if (!strcmp(&cputypval[0], "sun4d"))
+		sparc_cpu_model = sun4d;
+	if (!strcmp(&cputypval[0], "sun4e"))
+		sparc_cpu_model = sun4e;
+	if (!strcmp(&cputypval[0], "sun4u"))
+		sparc_cpu_model = sun4u;
+	if (!strncmp(&cputypval[0], "leon" , 4))
+		sparc_cpu_model = sparc_leon;
+
+	leon_patch();
 	start_kernel();
 }
 
@@ -270,21 +311,6 @@ void __init setup_arch(char **cmdline_p)
 
 	register_console(&prom_early_console);
 
-	/* Set sparc_cpu_model */
-	sparc_cpu_model = sun_unknown;
-	if (!strcmp(&cputypval[0], "sun4m"))
-		sparc_cpu_model = sun4m;
-	if (!strcmp(&cputypval[0], "sun4s"))
-		sparc_cpu_model = sun4m; /* CP-1200 with PROM 2.30 -E */
-	if (!strcmp(&cputypval[0], "sun4d"))
-		sparc_cpu_model = sun4d;
-	if (!strcmp(&cputypval[0], "sun4e"))
-		sparc_cpu_model = sun4e;
-	if (!strcmp(&cputypval[0], "sun4u"))
-		sparc_cpu_model = sun4u;
-	if (!strncmp(&cputypval[0], "leon" , 4))
-		sparc_cpu_model = sparc_leon;
-
 	printk("ARCH: ");
 	switch(sparc_cpu_model) {
 	case sun4m:
diff --git a/arch/sparc/kernel/vmlinux.lds.S b/arch/sparc/kernel/vmlinux.lds.S
index 0e1605697b49..89c2c29f154b 100644
--- a/arch/sparc/kernel/vmlinux.lds.S
+++ b/arch/sparc/kernel/vmlinux.lds.S
@@ -107,6 +107,11 @@ SECTIONS
 		*(.sun4v_2insn_patch)
 		__sun4v_2insn_patch_end = .;
 	}
+	.leon_1insn_patch : {
+		__leon_1insn_patch = .;
+		*(.leon_1insn_patch)
+		__leon_1insn_patch_end = .;
+	}
 	.swapper_tsb_phys_patch : {
 		__swapper_tsb_phys_patch = .;
 		*(.swapper_tsb_phys_patch)
-- 
cgit v1.2.3


From b08b5c9c9b35c938e8a94d9232e05a7f69a1dba5 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Fri, 25 May 2012 21:20:10 +0000
Subject: sparc32: handle leon in irq_32.c

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
---
 arch/sparc/kernel/irq_32.c | 22 ++++++++++++----------
 1 file changed, 12 insertions(+), 10 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/kernel/irq_32.c b/arch/sparc/kernel/irq_32.c
index ae04914f7774..c145f6fd123b 100644
--- a/arch/sparc/kernel/irq_32.c
+++ b/arch/sparc/kernel/irq_32.c
@@ -241,9 +241,6 @@ int sparc_floppy_request_irq(unsigned int irq, irq_handler_t irq_handler)
 	unsigned int cpu_irq;
 	int err;
 
-#if defined CONFIG_SMP && !defined CONFIG_SPARC_LEON
-	struct tt_entry *trap_table;
-#endif
 
 	err = request_irq(irq, irq_handler, 0, "floppy", NULL);
 	if (err)
@@ -264,13 +261,18 @@ int sparc_floppy_request_irq(unsigned int irq, irq_handler_t irq_handler)
 	table[SP_TRAP_IRQ1+(cpu_irq-1)].inst_four = SPARC_NOP;
 
 	INSTANTIATE(sparc_ttable)
-#if defined CONFIG_SMP && !defined CONFIG_SPARC_LEON
-	trap_table = &trapbase_cpu1;
-	INSTANTIATE(trap_table)
-	trap_table = &trapbase_cpu2;
-	INSTANTIATE(trap_table)
-	trap_table = &trapbase_cpu3;
-	INSTANTIATE(trap_table)
+
+#if defined CONFIG_SMP
+	if (sparc_cpu_model != sparc_leon) {
+		struct tt_entry *trap_table;
+
+		trap_table = &trapbase_cpu1;
+		INSTANTIATE(trap_table)
+		trap_table = &trapbase_cpu2;
+		INSTANTIATE(trap_table)
+		trap_table = &trapbase_cpu3;
+		INSTANTIATE(trap_table)
+	}
 #endif
 #undef INSTANTIATE
 	/*
-- 
cgit v1.2.3


From d87d8c11f347e743f0223d16c8ec57ef7e0274b2 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Fri, 25 May 2012 21:20:11 +0000
Subject: sparc32: handle leon in cpu.c

A few hardcoded constant were replaced by symbolic
versions to improve readability

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
---
 arch/sparc/include/asm/psr.h |  2 ++
 arch/sparc/kernel/cpu.c      | 18 +++++++++---------
 2 files changed, 11 insertions(+), 9 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/include/asm/psr.h b/arch/sparc/include/asm/psr.h
index c02c735d4ebe..cee7ed9c927d 100644
--- a/arch/sparc/include/asm/psr.h
+++ b/arch/sparc/include/asm/psr.h
@@ -35,7 +35,9 @@
 #define PSR_VERS    0x0f000000         /* cpu-version field          */
 #define PSR_IMPL    0xf0000000         /* cpu-implementation field   */
 
+#define PSR_VERS_SHIFT		24
 #define PSR_IMPL_SHIFT		28
+#define PSR_VERS_SHIFTED_MASK	0xf
 #define PSR_IMPL_SHIFTED_MASK	0xf
 
 #define PSR_IMPL_TI		0x4
diff --git a/arch/sparc/kernel/cpu.c b/arch/sparc/kernel/cpu.c
index 2d1819641769..a6c94a2bf9d4 100644
--- a/arch/sparc/kernel/cpu.c
+++ b/arch/sparc/kernel/cpu.c
@@ -121,7 +121,7 @@ static const struct manufacturer_info __initconst manufacturer_info[] = {
 		FPU(-1, NULL)
 	}
 },{
-	4,
+	PSR_IMPL_TI,
 	.cpu_info = {
 		CPU(0, "Texas Instruments, Inc. - SuperSparc-(II)"),
 		/* SparcClassic  --  borned STP1010TAB-50*/
@@ -191,7 +191,7 @@ static const struct manufacturer_info __initconst manufacturer_info[] = {
 		FPU(-1, NULL)
 	}
 },{
-	0xF,		/* Aeroflex Gaisler */
+	PSR_IMPL_LEON,		/* Aeroflex Gaisler */
 	.cpu_info = {
 		CPU(3, "LEON"),
 		CPU(-1, NULL)
@@ -440,16 +440,16 @@ static int __init cpu_type_probe(void)
 	int psr_impl, psr_vers, fpu_vers;
 	int psr;
 
-	psr_impl = ((get_psr() >> 28) & 0xf);
-	psr_vers = ((get_psr() >> 24) & 0xf);
+	psr_impl = ((get_psr() >> PSR_IMPL_SHIFT) & PSR_IMPL_SHIFTED_MASK);
+	psr_vers = ((get_psr() >> PSR_VERS_SHIFT) & PSR_VERS_SHIFTED_MASK);
 
 	psr = get_psr();
 	put_psr(psr | PSR_EF);
-#ifdef CONFIG_SPARC_LEON
-	fpu_vers = get_psr() & PSR_EF ? ((get_fsr() >> 17) & 0x7) : 7;
-#else
-	fpu_vers = ((get_fsr() >> 17) & 0x7);
-#endif
+
+	if (psr_impl == PSR_IMPL_LEON)
+		fpu_vers = get_psr() & PSR_EF ? ((get_fsr() >> 17) & 0x7) : 7;
+	else
+		fpu_vers = ((get_fsr() >> 17) & 0x7);
 
 	put_psr(psr);
 
-- 
cgit v1.2.3


From 93bb32f632c90be00d9e5d69091ada201f619c18 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Fri, 25 May 2012 21:20:12 +0000
Subject: sparc32,leon: clean up leon.h

- Drop unused stuff accumulated over time
- Drop non-leon stuff
- Include almost all of the header unconditionally

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
---
 arch/sparc/include/asm/leon.h     | 67 ++-------------------------------------
 arch/sparc/include/asm/pgtsrmmu.h |  1 +
 arch/sparc/kernel/leon_kernel.c   |  1 +
 3 files changed, 4 insertions(+), 65 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/include/asm/leon.h b/arch/sparc/include/asm/leon.h
index 07659124c140..00530a599c1f 100644
--- a/arch/sparc/include/asm/leon.h
+++ b/arch/sparc/include/asm/leon.h
@@ -8,8 +8,6 @@
 #ifndef LEON_H_INCLUDE
 #define LEON_H_INCLUDE
 
-#ifdef CONFIG_SPARC_LEON
-
 /* mmu register access, ASI_LEON_MMUREGS */
 #define LEON_CNR_CTRL		0x000
 #define LEON_CNR_CTXP		0x100
@@ -62,15 +60,6 @@
 
 #ifndef __ASSEMBLY__
 
-/* do a virtual address read without cache */
-static inline unsigned long leon_readnobuffer_reg(unsigned long paddr)
-{
-	unsigned long retval;
-	__asm__ __volatile__("lda [%1] %2, %0\n\t" :
-			     "=r"(retval) : "r"(paddr), "i"(ASI_LEON_NOCACHE));
-	return retval;
-}
-
 /* do a physical address bypass write, i.e. for 0x80000000 */
 static inline void leon_store_reg(unsigned long paddr, unsigned long value)
 {
@@ -87,47 +76,16 @@ static inline unsigned long leon_load_reg(unsigned long paddr)
 	return retval;
 }
 
-static inline void leon_srmmu_disabletlb(void)
-{
-	unsigned int retval;
-	__asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0),
-			     "i"(ASI_LEON_MMUREGS));
-	retval |= LEON_CNR_CTRL_TLBDIS;
-	__asm__ __volatile__("sta %0, [%%g0] %2\n\t" : : "r"(retval), "r"(0),
-			     "i"(ASI_LEON_MMUREGS) : "memory");
-}
-
-static inline void leon_srmmu_enabletlb(void)
-{
-	unsigned int retval;
-	__asm__ __volatile__("lda [%%g0] %2, %0\n\t" : "=r"(retval) : "r"(0),
-			     "i"(ASI_LEON_MMUREGS));
-	retval = retval & ~LEON_CNR_CTRL_TLBDIS;
-	__asm__ __volatile__("sta %0, [%%g0] %2\n\t" : : "r"(retval), "r"(0),
-			     "i"(ASI_LEON_MMUREGS) : "memory");
-}
-
 /* macro access for leon_load_reg() and leon_store_reg() */
 #define LEON3_BYPASS_LOAD_PA(x)	    (leon_load_reg((unsigned long)(x)))
 #define LEON3_BYPASS_STORE_PA(x, v) (leon_store_reg((unsigned long)(x), (unsigned long)(v)))
-#define LEON3_BYPASS_ANDIN_PA(x, v) LEON3_BYPASS_STORE_PA(x, LEON3_BYPASS_LOAD_PA(x) & v)
-#define LEON3_BYPASS_ORIN_PA(x, v)  LEON3_BYPASS_STORE_PA(x, LEON3_BYPASS_LOAD_PA(x) | v)
 #define LEON_BYPASS_LOAD_PA(x)      leon_load_reg((unsigned long)(x))
 #define LEON_BYPASS_STORE_PA(x, v)  leon_store_reg((unsigned long)(x), (unsigned long)(v))
-#define LEON_REGLOAD_PA(x)          leon_load_reg((unsigned long)(x)+LEON_PREGS)
-#define LEON_REGSTORE_PA(x, v)      leon_store_reg((unsigned long)(x)+LEON_PREGS, (unsigned long)(v))
-#define LEON_REGSTORE_OR_PA(x, v)   LEON_REGSTORE_PA(x, LEON_REGLOAD_PA(x) | (unsigned long)(v))
-#define LEON_REGSTORE_AND_PA(x, v)  LEON_REGSTORE_PA(x, LEON_REGLOAD_PA(x) & (unsigned long)(v))
-
-/* macro access for leon_readnobuffer_reg() */
-#define LEON_BYPASSCACHE_LOAD_VA(x) leon_readnobuffer_reg((unsigned long)(x))
 
 extern void leon_init(void);
 extern void leon_switch_mm(void);
 extern void leon_init_IRQ(void);
 
-extern unsigned long last_valid_pfn;
-
 static inline unsigned long sparc_leon3_get_dcachecfg(void)
 {
 	unsigned int retval;
@@ -230,9 +188,6 @@ static inline int sparc_leon3_cpuid(void)
 #error cannot determine LEON_PAGE_SIZE_LEON
 #endif
 
-#define PAGE_MIN_SHIFT   (12)
-#define PAGE_MIN_SIZE    (1UL << PAGE_MIN_SHIFT)
-
 #define LEON3_XCCR_SETS_MASK  0x07000000UL
 #define LEON3_XCCR_SSIZE_MASK 0x00f00000UL
 
@@ -258,15 +213,6 @@ struct leon3_cacheregs {
 	unsigned long dccr;	/* 0x0c - Data Cache Configuration Register */
 };
 
-/* struct that hold LEON2 cache configuration register
- * & configuration register
- */
-struct leon2_cacheregs {
-	unsigned long ccr, cfg;
-};
-
-#ifdef __KERNEL__
-
 #include <linux/interrupt.h>
 
 struct device_node;
@@ -292,24 +238,15 @@ extern void leon_smp_done(void);
 extern void leon_boot_cpus(void);
 extern int leon_boot_one_cpu(int i, struct task_struct *);
 void leon_init_smp(void);
-extern void cpu_idle(void);
-extern void init_IRQ(void);
-extern void cpu_panic(void);
-extern int __leon_processor_id(void);
 void leon_enable_irq_cpu(unsigned int irq_nr, unsigned int cpu);
 extern irqreturn_t leon_percpu_timer_interrupt(int irq, void *unused);
 
-extern unsigned int real_irq_entry[];
 extern unsigned int smpleon_ipi[];
-extern unsigned int patchme_maybe_smp_msg[];
-extern unsigned int t_nmi[], linux_trap_ipi15_leon[];
-extern unsigned int linux_trap_ipi15_sun4m[];
+extern unsigned int linux_trap_ipi15_leon[];
 extern int leon_ipi_irq;
 
 #endif /* CONFIG_SMP */
 
-#endif /* __KERNEL__ */
-
 #endif /* __ASSEMBLY__ */
 
 /* macros used in leon_mm.c */
@@ -317,7 +254,7 @@ extern int leon_ipi_irq;
 #define _pfn_valid(pfn)	 ((pfn < last_valid_pfn) && (pfn >= PFN(phys_base)))
 #define _SRMMU_PTE_PMASK_LEON 0xffffffff
 
-#else /* defined(CONFIG_SPARC_LEON) */
+#ifndef CONFIG_SPARC_LEON
 
 /* nop definitions for !LEON case */
 #define leon_init() do {} while (0)
diff --git a/arch/sparc/include/asm/pgtsrmmu.h b/arch/sparc/include/asm/pgtsrmmu.h
index cb828703a63a..394fe25e79d1 100644
--- a/arch/sparc/include/asm/pgtsrmmu.h
+++ b/arch/sparc/include/asm/pgtsrmmu.h
@@ -139,6 +139,7 @@
 	 restore %g0, %g0, %g0;
 
 #ifndef __ASSEMBLY__
+extern unsigned long last_valid_pfn;
 
 /* This makes sense. Honest it does - Anton */
 /* XXX Yes but it's ugly as sin.  FIXME. -KMW */
diff --git a/arch/sparc/kernel/leon_kernel.c b/arch/sparc/kernel/leon_kernel.c
index 77c1b916e4dd..e34e2c40c060 100644
--- a/arch/sparc/kernel/leon_kernel.c
+++ b/arch/sparc/kernel/leon_kernel.c
@@ -23,6 +23,7 @@
 #include <asm/smp.h>
 #include <asm/setup.h>
 
+#include "kernel.h"
 #include "prom.h"
 #include "irq.h"
 
-- 
cgit v1.2.3


From 5561cd269820252dccf08b1cc093afbc2f06242d Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Fri, 25 May 2012 21:20:13 +0000
Subject: sparc32,leon: always include leon_kernel in build

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
---
 arch/sparc/include/asm/leon.h      | 2 --
 arch/sparc/include/asm/leon_amba.h | 4 ----
 arch/sparc/kernel/Makefile         | 2 +-
 3 files changed, 1 insertion(+), 7 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/include/asm/leon.h b/arch/sparc/include/asm/leon.h
index 00530a599c1f..95fa93187dde 100644
--- a/arch/sparc/include/asm/leon.h
+++ b/arch/sparc/include/asm/leon.h
@@ -257,9 +257,7 @@ extern int leon_ipi_irq;
 #ifndef CONFIG_SPARC_LEON
 
 /* nop definitions for !LEON case */
-#define leon_init() do {} while (0)
 #define leon_switch_mm() do {} while (0)
-#define leon_init_IRQ() do {} while (0)
 #define init_leon() do {} while (0)
 #define leon_smp_done() do {} while (0)
 #define leon_boot_cpus() do {} while (0)
diff --git a/arch/sparc/include/asm/leon_amba.h b/arch/sparc/include/asm/leon_amba.h
index e50f326e71bd..f3034eddf468 100644
--- a/arch/sparc/include/asm/leon_amba.h
+++ b/arch/sparc/include/asm/leon_amba.h
@@ -87,8 +87,6 @@ struct amba_prom_registers {
 #define LEON3_GPTIMER_CONFIG_NRTIMERS(c) ((c)->config & 0x7)
 #define LEON3_GPTIMER_CTRL_ISPENDING(r)  (((r)&LEON3_GPTIMER_CTRL_PENDING) ? 1 : 0)
 
-#ifdef CONFIG_SPARC_LEON
-
 #ifndef __ASSEMBLY__
 
 struct leon3_irqctrl_regs_map {
@@ -264,6 +262,4 @@ extern unsigned int sparc_leon_eirq;
 
 #define amba_device(x) (((x) >> 12) & 0xfff)
 
-#endif /* !defined(CONFIG_SPARC_LEON) */
-
 #endif
diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
index 72308f9b0096..43af0d619a3a 100644
--- a/arch/sparc/kernel/Makefile
+++ b/arch/sparc/kernel/Makefile
@@ -51,7 +51,7 @@ obj-y                   += of_device_common.o
 obj-y                   += of_device_$(BITS).o
 obj-$(CONFIG_SPARC64)   += prom_irqtrans.o
 
-obj-$(CONFIG_SPARC_LEON)+= leon_kernel.o
+obj-$(CONFIG_SPARC32)   += leon_kernel.o
 obj-$(CONFIG_SPARC_LEON)+= leon_pmc.o
 
 obj-$(CONFIG_SPARC64)   += reboot.o
-- 
cgit v1.2.3


From 3107948848ebc52b98ffd853f72065338bbc57e2 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Fri, 25 May 2012 21:20:14 +0000
Subject: sparc32,leon: always include leon_smp + leon_mm in build

Fix-up leon specific assembler to use ASI_LEON_MMUREGS

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
---
 arch/sparc/include/asm/leon.h     | 12 ------------
 arch/sparc/kernel/entry.S         |  3 ---
 arch/sparc/kernel/head_32.S       |  3 ---
 arch/sparc/kernel/leon_smp.c      |  4 ----
 arch/sparc/kernel/trampoline_32.S |  6 +-----
 arch/sparc/mm/Makefile            |  2 +-
 6 files changed, 2 insertions(+), 28 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/include/asm/leon.h b/arch/sparc/include/asm/leon.h
index 95fa93187dde..995c4e05be6d 100644
--- a/arch/sparc/include/asm/leon.h
+++ b/arch/sparc/include/asm/leon.h
@@ -254,16 +254,4 @@ extern int leon_ipi_irq;
 #define _pfn_valid(pfn)	 ((pfn < last_valid_pfn) && (pfn >= PFN(phys_base)))
 #define _SRMMU_PTE_PMASK_LEON 0xffffffff
 
-#ifndef CONFIG_SPARC_LEON
-
-/* nop definitions for !LEON case */
-#define leon_switch_mm() do {} while (0)
-#define init_leon() do {} while (0)
-#define leon_smp_done() do {} while (0)
-#define leon_boot_cpus() do {} while (0)
-#define leon_boot_one_cpu(i, t) 1
-#define leon_init_smp() do {} while (0)
-
-#endif /* !defined(CONFIG_SPARC_LEON) */
-
 #endif
diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S
index 2dbe1806e530..8550f10af453 100644
--- a/arch/sparc/kernel/entry.S
+++ b/arch/sparc/kernel/entry.S
@@ -393,7 +393,6 @@ linux_trap_ipi15_sun4d:
 	/* FIXME */
 1:	b,a	1b
 
-#ifdef CONFIG_SPARC_LEON
 	.globl	smpleon_ipi
 	.extern leon_ipi_interrupt
 	/* SMP per-cpu IPI interrupts are handled specially. */
@@ -424,8 +423,6 @@ linux_trap_ipi15_leon:
 	b	ret_trap_lockless_ipi
 	 clr	%l6
 
-#endif /* CONFIG_SPARC_LEON */
-
 #endif /* CONFIG_SMP */
 
 	/* This routine handles illegal instructions and privileged
diff --git a/arch/sparc/kernel/head_32.S b/arch/sparc/kernel/head_32.S
index 6c6b8c27c1b8..cdc7f29ba17b 100644
--- a/arch/sparc/kernel/head_32.S
+++ b/arch/sparc/kernel/head_32.S
@@ -387,11 +387,8 @@ execute_in_high_mem:
 #ifdef CONFIG_SMP
 		ldub	[%g2 + %lo(boot_cpu_id)], %g1
 		cmp	%g1, 0xff		! unset means first CPU
-#ifdef CONFIG_SPARC_LEON
-		/* XXX Hack to allow build - remove ifdef later */
 		bne	leon_smp_cpu_startup	! continue only with master
 		 nop
-#endif
 #endif
 		/* Get CPU-ID from most significant 4-bit of ASR17 */
 		rd     %asr17, %g1
diff --git a/arch/sparc/kernel/leon_smp.c b/arch/sparc/kernel/leon_smp.c
index a469090faf9f..218c2f022695 100644
--- a/arch/sparc/kernel/leon_smp.c
+++ b/arch/sparc/kernel/leon_smp.c
@@ -48,8 +48,6 @@
 
 #include "kernel.h"
 
-#ifdef CONFIG_SPARC_LEON
-
 #include "irq.h"
 
 extern ctxd_t *srmmu_ctx_table_phys;
@@ -507,5 +505,3 @@ void __init leon_init_smp(void)
 
 	sparc32_ipi_ops = &leon_ipi_ops;
 }
-
-#endif /* CONFIG_SPARC_LEON */
diff --git a/arch/sparc/kernel/trampoline_32.S b/arch/sparc/kernel/trampoline_32.S
index 7364ddc9e5aa..af27acab4486 100644
--- a/arch/sparc/kernel/trampoline_32.S
+++ b/arch/sparc/kernel/trampoline_32.S
@@ -149,8 +149,6 @@ sun4d_cpu_startup:
 
 	b,a	smp_do_cpu_idle
 
-#ifdef CONFIG_SPARC_LEON
-
 	__CPUINIT
 	.align	4
         .global leon_smp_cpu_startup, smp_penguin_ctable
@@ -161,7 +159,7 @@ leon_smp_cpu_startup:
         ld [%g1+4],%g1
         srl %g1,4,%g1
         set 0x00000100,%g5 /* SRMMU_CTXTBL_PTR */
-	sta %g1, [%g5] ASI_M_MMUREGS
+	sta %g1, [%g5] ASI_LEON_MMUREGS
 
 	/* Set up a sane %psr -- PIL<0xf> S<0x1> PS<0x1> CWP<0x0> */
 	set	(PSR_PIL | PSR_S | PSR_PS), %g1
@@ -207,5 +205,3 @@ leon_smp_cpu_startup:
 	 nop
 
 	b,a	smp_do_cpu_idle
-
-#endif
diff --git a/arch/sparc/mm/Makefile b/arch/sparc/mm/Makefile
index 69ffd3112fed..389aebd720bc 100644
--- a/arch/sparc/mm/Makefile
+++ b/arch/sparc/mm/Makefile
@@ -9,7 +9,7 @@ obj-y                   += fault_$(BITS).o
 obj-y                   += init_$(BITS).o
 obj-$(CONFIG_SPARC32)   += extable.o srmmu.o iommu.o io-unit.o
 obj-$(CONFIG_SPARC32)   += hypersparc.o viking.o tsunami.o swift.o
-obj-$(CONFIG_SPARC_LEON)+= leon_mm.o
+obj-$(CONFIG_SPARC32)   += leon_mm.o
 
 # Only used by sparc64
 obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
-- 
cgit v1.2.3


From 080f88837b489ff53c9ca62bc3adefdf74eb61e8 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Fri, 25 May 2012 21:20:15 +0000
Subject: sparc32,leon: fix section mismatch warning

Fix following warning:

WARNING: arch/sparc/kernel/built-in.o(.cpuinit.text+0x9f4): Section mismatch in reference from the function leon_callin() to the function .init.text:leon_configure_cache_smp()
The function __cpuinit leon_callin() references
a function __init leon_configure_cache_smp().
If leon_configure_cache_smp is only used by leon_callin then
annotate leon_configure_cache_smp with a matching annotation.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
---
 arch/sparc/kernel/leon_smp.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/kernel/leon_smp.c b/arch/sparc/kernel/leon_smp.c
index 218c2f022695..0f3fb6d9c8ef 100644
--- a/arch/sparc/kernel/leon_smp.c
+++ b/arch/sparc/kernel/leon_smp.c
@@ -54,7 +54,7 @@ extern ctxd_t *srmmu_ctx_table_phys;
 static int smp_processors_ready;
 extern volatile unsigned long cpu_callin_map[NR_CPUS];
 extern cpumask_t smp_commenced_mask;
-void __init leon_configure_cache_smp(void);
+void __cpuinit leon_configure_cache_smp(void);
 static void leon_ipi_init(void);
 
 /* IRQ number of LEON IPIs */
@@ -121,7 +121,7 @@ void __cpuinit leon_callin(void)
 
 extern struct linux_prom_registers smp_penguin_ctable;
 
-void __init leon_configure_cache_smp(void)
+void __cpuinit leon_configure_cache_smp(void)
 {
 	unsigned long cfg = sparc_leon3_get_dcachecfg();
 	int me = smp_processor_id();
-- 
cgit v1.2.3


From 1ec8cf62338b950fdbf76bbdfa3064bc1c0b7a81 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Fri, 25 May 2012 21:20:16 +0000
Subject: sparc32: introduce support for run-time patching for all shared
 assembler code

All users of MMUREGS ASI in kernel/ now uses run-time patching.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
---
 arch/sparc/kernel/entry.S    |  7 +++++--
 arch/sparc/kernel/etrap_32.S | 18 +++++++++++++-----
 arch/sparc/kernel/rtrap_32.S | 18 ++++++++++++------
 arch/sparc/kernel/wof.S      | 18 ++++++++++++------
 arch/sparc/kernel/wuf.S      | 27 +++++++++++++++++----------
 5 files changed, 59 insertions(+), 29 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/kernel/entry.S b/arch/sparc/kernel/entry.S
index 8550f10af453..dcaa1cf0de40 100644
--- a/arch/sparc/kernel/entry.S
+++ b/arch/sparc/kernel/entry.S
@@ -767,8 +767,11 @@ srmmu_fault:
 	mov	0x400, %l5
 	mov	0x300, %l4
 
-	lda	[%l5] ASI_M_MMUREGS, %l6	! read sfar first
-	lda	[%l4] ASI_M_MMUREGS, %l5	! read sfsr last
+LEON_PI(lda	[%l5] ASI_LEON_MMUREGS, %l6)	! read sfar first
+SUN_PI_(lda	[%l5] ASI_M_MMUREGS, %l6)	! read sfar first
+
+LEON_PI(lda	[%l4] ASI_LEON_MMUREGS, %l5)	! read sfsr last
+SUN_PI_(lda	[%l4] ASI_M_MMUREGS, %l5)	! read sfsr last
 
 	andn	%l6, 0xfff, %l6
 	srl	%l5, 6, %l5			! and encode all info into l7
diff --git a/arch/sparc/kernel/etrap_32.S b/arch/sparc/kernel/etrap_32.S
index 84b5f0d2afde..e3e80d65e39a 100644
--- a/arch/sparc/kernel/etrap_32.S
+++ b/arch/sparc/kernel/etrap_32.S
@@ -234,7 +234,8 @@ tsetup_srmmu_stackchk:
 
 	cmp	%glob_tmp, %sp
 	bleu,a	1f
-	 lda	[%g0] ASI_M_MMUREGS, %glob_tmp		! read MMU control
+LEON_PI( lda	[%g0] ASI_LEON_MMUREGS, %glob_tmp)	! read MMU control
+SUN_PI_( lda	[%g0] ASI_M_MMUREGS, %glob_tmp)		! read MMU control
 
 trap_setup_user_stack_is_bolixed:
 	/* From user/kernel into invalid window w/bad user
@@ -249,18 +250,25 @@ trap_setup_user_stack_is_bolixed:
 1:
 	/* Clear the fault status and turn on the no_fault bit. */
 	or	%glob_tmp, 0x2, %glob_tmp		! or in no_fault bit
-	sta	%glob_tmp, [%g0] ASI_M_MMUREGS		! set it
+LEON_PI(sta	%glob_tmp, [%g0] ASI_LEON_MMUREGS)		! set it
+SUN_PI_(sta	%glob_tmp, [%g0] ASI_M_MMUREGS)		! set it
 
 	/* Dump the registers and cross fingers. */
 	STORE_WINDOW(sp)
 
 	/* Clear the no_fault bit and check the status. */
 	andn	%glob_tmp, 0x2, %glob_tmp
-	sta	%glob_tmp, [%g0] ASI_M_MMUREGS
+LEON_PI(sta	%glob_tmp, [%g0] ASI_LEON_MMUREGS)
+SUN_PI_(sta	%glob_tmp, [%g0] ASI_M_MMUREGS)
+
 	mov	AC_M_SFAR, %glob_tmp
-	lda	[%glob_tmp] ASI_M_MMUREGS, %g0
+LEON_PI(lda	[%glob_tmp] ASI_LEON_MMUREGS, %g0)
+SUN_PI_(lda	[%glob_tmp] ASI_M_MMUREGS, %g0)
+
 	mov	AC_M_SFSR, %glob_tmp
-	lda	[%glob_tmp] ASI_M_MMUREGS, %glob_tmp	! save away status of winstore
+LEON_PI(lda	[%glob_tmp] ASI_LEON_MMUREGS, %glob_tmp)! save away status of winstore
+SUN_PI_(lda	[%glob_tmp] ASI_M_MMUREGS, %glob_tmp)	! save away status of winstore
+
 	andcc	%glob_tmp, 0x2, %g0			! did we fault?
 	bne	trap_setup_user_stack_is_bolixed	! failure
 	 nop
diff --git a/arch/sparc/kernel/rtrap_32.S b/arch/sparc/kernel/rtrap_32.S
index 7abc24e2bf1a..6c34de0c2abd 100644
--- a/arch/sparc/kernel/rtrap_32.S
+++ b/arch/sparc/kernel/rtrap_32.S
@@ -231,11 +231,14 @@ srmmu_rett_stackchk:
 	cmp	%g1, %fp
 	bleu	ret_trap_user_stack_is_bolixed
 	 mov	AC_M_SFSR, %g1
-	lda	[%g1] ASI_M_MMUREGS, %g0
+LEON_PI(lda	[%g1] ASI_LEON_MMUREGS, %g0)
+SUN_PI_(lda	[%g1] ASI_M_MMUREGS, %g0)
 
-	lda	[%g0] ASI_M_MMUREGS, %g1
+LEON_PI(lda	[%g0] ASI_LEON_MMUREGS, %g1)
+SUN_PI_(lda	[%g0] ASI_M_MMUREGS, %g1)
 	or	%g1, 0x2, %g1
-	sta	%g1, [%g0] ASI_M_MMUREGS
+LEON_PI(sta	%g1, [%g0] ASI_LEON_MMUREGS)
+SUN_PI_(sta	%g1, [%g0] ASI_M_MMUREGS)
 
 	restore	%g0, %g0, %g0
 
@@ -244,13 +247,16 @@ srmmu_rett_stackchk:
 	save	%g0, %g0, %g0
 
 	andn	%g1, 0x2, %g1
-	sta	%g1, [%g0] ASI_M_MMUREGS
+LEON_PI(sta	%g1, [%g0] ASI_LEON_MMUREGS)
+SUN_PI_(sta	%g1, [%g0] ASI_M_MMUREGS)
 
 	mov	AC_M_SFAR, %g2
-	lda	[%g2] ASI_M_MMUREGS, %g2
+LEON_PI(lda	[%g2] ASI_LEON_MMUREGS, %g2)
+SUN_PI_(lda	[%g2] ASI_M_MMUREGS, %g2)
 
 	mov	AC_M_SFSR, %g1
-	lda	[%g1] ASI_M_MMUREGS, %g1
+LEON_PI(lda	[%g1] ASI_LEON_MMUREGS, %g1)
+SUN_PI_(lda	[%g1] ASI_M_MMUREGS, %g1)
 	andcc	%g1, 0x2, %g0
 	be	ret_trap_userwins_ok
 	 nop
diff --git a/arch/sparc/kernel/wof.S b/arch/sparc/kernel/wof.S
index 4c2de3cf309b..28a7bc69f82b 100644
--- a/arch/sparc/kernel/wof.S
+++ b/arch/sparc/kernel/wof.S
@@ -332,24 +332,30 @@ spwin_srmmu_stackchk:
 	 mov	AC_M_SFSR, %glob_tmp
 
 	/* Clear the fault status and turn on the no_fault bit. */
-	lda	[%glob_tmp] ASI_M_MMUREGS, %g0		! eat SFSR
+LEON_PI(lda	[%glob_tmp] ASI_LEON_MMUREGS, %g0)	! eat SFSR
+SUN_PI_(lda	[%glob_tmp] ASI_M_MMUREGS, %g0)		! eat SFSR
 
-	lda	[%g0] ASI_M_MMUREGS, %glob_tmp		! read MMU control
+LEON_PI(lda	[%g0] ASI_LEON_MMUREGS, %glob_tmp)	! read MMU control
+SUN_PI_(lda	[%g0] ASI_M_MMUREGS, %glob_tmp)		! read MMU control
 	or	%glob_tmp, 0x2, %glob_tmp		! or in no_fault bit
-	sta	%glob_tmp, [%g0] ASI_M_MMUREGS		! set it
+LEON_PI(sta	%glob_tmp, [%g0] ASI_LEON_MMUREGS)	! set it
+SUN_PI_(sta	%glob_tmp, [%g0] ASI_M_MMUREGS)		! set it
 
 	/* Dump the registers and cross fingers. */
 	STORE_WINDOW(sp)
 
 	/* Clear the no_fault bit and check the status. */
 	andn	%glob_tmp, 0x2, %glob_tmp
-	sta	%glob_tmp, [%g0] ASI_M_MMUREGS
+LEON_PI(sta	%glob_tmp, [%g0] ASI_LEON_MMUREGS)
+SUN_PI_(sta	%glob_tmp, [%g0] ASI_M_MMUREGS)
 
 	mov	AC_M_SFAR, %glob_tmp
-	lda	[%glob_tmp] ASI_M_MMUREGS, %g0
+LEON_PI(lda	[%glob_tmp] ASI_LEON_MMUREGS, %g0)
+SUN_PI_(lda	[%glob_tmp] ASI_M_MMUREGS, %g0)
 
 	mov	AC_M_SFSR, %glob_tmp
-	lda	[%glob_tmp] ASI_M_MMUREGS, %glob_tmp
+LEON_PI(lda	[%glob_tmp] ASI_LEON_MMUREGS, %glob_tmp)
+SUN_PI_(lda	[%glob_tmp] ASI_M_MMUREGS, %glob_tmp)
 	andcc	%glob_tmp, 0x2, %g0			! did we fault?
 	be,a	spwin_finish_up + 0x4			! cool beans, success
 	 restore %g0, %g0, %g0
diff --git a/arch/sparc/kernel/wuf.S b/arch/sparc/kernel/wuf.S
index 9fde91a249e0..2c21cc59683e 100644
--- a/arch/sparc/kernel/wuf.S
+++ b/arch/sparc/kernel/wuf.S
@@ -254,16 +254,19 @@ srmmu_fwin_stackchk:
 	mov	AC_M_SFSR, %l4
 	cmp	%l5, %sp
 	bleu	fwin_user_stack_is_bolixed
-	 lda	[%l4] ASI_M_MMUREGS, %g0	! clear fault status
+LEON_PI( lda	[%l4] ASI_LEON_MMUREGS, %g0)	! clear fault status
+SUN_PI_( lda	[%l4] ASI_M_MMUREGS, %g0)	! clear fault status
 
 	/* The technique is, turn off faults on this processor,
 	 * just let the load rip, then check the sfsr to see if
 	 * a fault did occur.  Then we turn on fault traps again
 	 * and branch conditionally based upon what happened.
 	 */
-	lda	[%g0] ASI_M_MMUREGS, %l5	! read mmu-ctrl reg
+LEON_PI(lda	[%g0] ASI_LEON_MMUREGS, %l5)	! read mmu-ctrl reg
+SUN_PI_(lda	[%g0] ASI_M_MMUREGS, %l5)	! read mmu-ctrl reg
 	or	%l5, 0x2, %l5			! turn on no-fault bit
-	sta	%l5, [%g0] ASI_M_MMUREGS	! store it
+LEON_PI(sta	%l5, [%g0] ASI_LEON_MMUREGS)	! store it
+SUN_PI_(sta	%l5, [%g0] ASI_M_MMUREGS)	! store it
 
 	/* Cross fingers and go for it. */
 	LOAD_WINDOW(sp)
@@ -275,18 +278,22 @@ srmmu_fwin_stackchk:
 
 	/* LOCATION: Window 'T' */
 
-	lda	[%g0] ASI_M_MMUREGS, %twin_tmp1	! load mmu-ctrl again
-	andn	%twin_tmp1, 0x2, %twin_tmp1	! clear no-fault bit
-	sta	%twin_tmp1, [%g0] ASI_M_MMUREGS	! store it
+LEON_PI(lda	[%g0] ASI_LEON_MMUREGS, %twin_tmp1)	! load mmu-ctrl again
+SUN_PI_(lda	[%g0] ASI_M_MMUREGS, %twin_tmp1)	! load mmu-ctrl again
+	andn	%twin_tmp1, 0x2, %twin_tmp1		! clear no-fault bit
+LEON_PI(sta	%twin_tmp1, [%g0] ASI_LEON_MMUREGS)	! store it
+SUN_PI_(sta	%twin_tmp1, [%g0] ASI_M_MMUREGS)	! store it
 
 	mov	AC_M_SFAR, %twin_tmp2
-	lda	[%twin_tmp2] ASI_M_MMUREGS, %g0	! read fault address
+LEON_PI(lda	[%twin_tmp2] ASI_LEON_MMUREGS, %g0)	! read fault address
+SUN_PI_(lda	[%twin_tmp2] ASI_M_MMUREGS, %g0)	! read fault address
 
 	mov	AC_M_SFSR, %twin_tmp2
-	lda	[%twin_tmp2] ASI_M_MMUREGS, %twin_tmp2	! read fault status
-	andcc	%twin_tmp2, 0x2, %g0			! did fault occur?
+LEON_PI(lda	[%twin_tmp2] ASI_LEON_MMUREGS, %twin_tmp2) ! read fault status
+SUN_PI_(lda	[%twin_tmp2] ASI_M_MMUREGS, %twin_tmp2)	   ! read fault status
+	andcc	%twin_tmp2, 0x2, %g0			   ! did fault occur?
 
-	bne	1f					! yep, cleanup
+	bne	1f					   ! yep, cleanup
 	 nop
 
 	wr	%t_psr, 0x0, %psr
-- 
cgit v1.2.3


From 6729cf7967f6c11f6de6a0b43ec277905a00c146 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Fri, 25 May 2012 21:20:17 +0000
Subject: sparc32: introduce run-time patching of srmmu access functions

LEON uses a different ASI than SUN for MMUREGS

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
---
 arch/sparc/include/asm/pgtsrmmu.h | 68 ++++----------------------------
 arch/sparc/mm/Makefile            |  1 +
 arch/sparc/mm/srmmu_access.S      | 82 +++++++++++++++++++++++++++++++++++++++
 3 files changed, 90 insertions(+), 61 deletions(-)
 create mode 100644 arch/sparc/mm/srmmu_access.S

(limited to 'arch')

diff --git a/arch/sparc/include/asm/pgtsrmmu.h b/arch/sparc/include/asm/pgtsrmmu.h
index 394fe25e79d1..72f71214ef87 100644
--- a/arch/sparc/include/asm/pgtsrmmu.h
+++ b/arch/sparc/include/asm/pgtsrmmu.h
@@ -149,67 +149,13 @@ extern void *srmmu_nocache_pool;
 #define __nocache_fix(VADDR) __va(__nocache_pa(VADDR))
 
 /* Accessing the MMU control register. */
-static inline unsigned int srmmu_get_mmureg(void)
-{
-        unsigned int retval;
-	__asm__ __volatile__("lda [%%g0] %1, %0\n\t" :
-			     "=r" (retval) :
-			     "i" (ASI_M_MMUREGS));
-	return retval;
-}
-
-static inline void srmmu_set_mmureg(unsigned long regval)
-{
-	__asm__ __volatile__("sta %0, [%%g0] %1\n\t" : :
-			     "r" (regval), "i" (ASI_M_MMUREGS) : "memory");
-
-}
-
-static inline void srmmu_set_ctable_ptr(unsigned long paddr)
-{
-	paddr = ((paddr >> 4) & SRMMU_CTX_PMASK);
-	__asm__ __volatile__("sta %0, [%1] %2\n\t" : :
-			     "r" (paddr), "r" (SRMMU_CTXTBL_PTR),
-			     "i" (ASI_M_MMUREGS) :
-			     "memory");
-}
-
-static inline void srmmu_set_context(int context)
-{
-	__asm__ __volatile__("sta %0, [%1] %2\n\t" : :
-			     "r" (context), "r" (SRMMU_CTX_REG),
-			     "i" (ASI_M_MMUREGS) : "memory");
-}
-
-static inline int srmmu_get_context(void)
-{
-	register int retval;
-	__asm__ __volatile__("lda [%1] %2, %0\n\t" :
-			     "=r" (retval) :
-			     "r" (SRMMU_CTX_REG),
-			     "i" (ASI_M_MMUREGS));
-	return retval;
-}
-
-static inline unsigned int srmmu_get_fstatus(void)
-{
-	unsigned int retval;
-
-	__asm__ __volatile__("lda [%1] %2, %0\n\t" :
-			     "=r" (retval) :
-			     "r" (SRMMU_FAULT_STATUS), "i" (ASI_M_MMUREGS));
-	return retval;
-}
-
-static inline unsigned int srmmu_get_faddr(void)
-{
-	unsigned int retval;
-
-	__asm__ __volatile__("lda [%1] %2, %0\n\t" :
-			     "=r" (retval) :
-			     "r" (SRMMU_FAULT_ADDR), "i" (ASI_M_MMUREGS));
-	return retval;
-}
+unsigned int srmmu_get_mmureg(void);
+void srmmu_set_mmureg(unsigned long regval);
+void srmmu_set_ctable_ptr(unsigned long paddr);
+void srmmu_set_context(int context);
+int srmmu_get_context(void);
+unsigned int srmmu_get_fstatus(void);
+unsigned int srmmu_get_faddr(void);
 
 /* This is guaranteed on all SRMMU's. */
 static inline void srmmu_flush_whole_tlb(void)
diff --git a/arch/sparc/mm/Makefile b/arch/sparc/mm/Makefile
index 389aebd720bc..30c3eccfdf5a 100644
--- a/arch/sparc/mm/Makefile
+++ b/arch/sparc/mm/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_SPARC64)   += ultra.o tlb.o tsb.o gup.o
 obj-y                   += fault_$(BITS).o
 obj-y                   += init_$(BITS).o
 obj-$(CONFIG_SPARC32)   += extable.o srmmu.o iommu.o io-unit.o
+obj-$(CONFIG_SPARC32)   += srmmu_access.o
 obj-$(CONFIG_SPARC32)   += hypersparc.o viking.o tsunami.o swift.o
 obj-$(CONFIG_SPARC32)   += leon_mm.o
 
diff --git a/arch/sparc/mm/srmmu_access.S b/arch/sparc/mm/srmmu_access.S
new file mode 100644
index 000000000000..d0a67b2c2383
--- /dev/null
+++ b/arch/sparc/mm/srmmu_access.S
@@ -0,0 +1,82 @@
+/* Assembler variants of srmmu access functions.
+ * Implemented in assembler to allow run-time patching.
+ * LEON uses a different ASI for MMUREGS than SUN.
+ *
+ * The leon_1insn_patch infrastructure is used
+ * for the run-time patching.
+ */
+
+#include <linux/linkage.h>
+
+#include <asm/asmmacro.h>
+#include <asm/pgtsrmmu.h>
+#include <asm/asi.h>
+
+/* unsigned int srmmu_get_mmureg(void) */
+ENTRY(srmmu_get_mmureg)
+LEON_PI(lda	[%g0] ASI_LEON_MMUREGS, %o0)
+SUN_PI_(lda	[%g0] ASI_M_MMUREGS, %o0)
+	retl
+	 nop
+ENDPROC(srmmu_get_mmureg)
+
+/* void srmmu_set_mmureg(unsigned long regval) */
+ENTRY(srmmu_set_mmureg)
+LEON_PI(sta	%o0, [%g0] ASI_LEON_MMUREGS)
+SUN_PI_(sta	%o0, [%g0] ASI_M_MMUREGS)
+	retl
+	 nop
+ENDPROC(srmmu_set_mmureg)
+
+/* void srmmu_set_ctable_ptr(unsigned long paddr) */
+ENTRY(srmmu_set_ctable_ptr)
+	/* paddr = ((paddr >> 4) & SRMMU_CTX_PMASK); */
+	srl	%o0, 4, %g1
+	and	%g1, SRMMU_CTX_PMASK, %g1
+
+	mov	SRMMU_CTXTBL_PTR, %g2
+LEON_PI(sta	%g1, [%g2] ASI_LEON_MMUREGS)
+SUN_PI_(sta	%g1, [%g2] ASI_M_MMUREGS)
+	retl
+	 nop
+ENDPROC(srmmu_set_ctable_ptr)
+
+
+/* void srmmu_set_context(int context) */
+ENTRY(srmmu_set_context)
+	mov	SRMMU_CTX_REG, %g1
+LEON_PI(sta	%o0, [%g1] ASI_LEON_MMUREGS)
+SUN_PI_(sta	%o0, [%g1] ASI_M_MMUREGS)
+	retl
+	 nop
+ENDPROC(srmmu_set_context)
+
+
+/* int srmmu_get_context(void) */
+ENTRY(srmmu_get_context)
+	mov	SRMMU_CTX_REG, %o0
+LEON_PI(lda     [%o0] ASI_LEON_MMUREGS, %o0)
+SUN_PI_(lda	[%o0] ASI_M_MMUREGS, %o0)
+	retl
+	 nop
+ENDPROC(srmmu_get_context)
+
+
+/* unsigned int srmmu_get_fstatus(void) */
+ENTRY(srmmu_get_fstatus)
+	mov	SRMMU_FAULT_STATUS, %o0
+LEON_PI(lda     [%o0] ASI_LEON_MMUREGS, %o0)
+SUN_PI_(lda	[%o0] ASI_M_MMUREGS, %o0)
+	retl
+	 nop
+ENDPROC(srmmu_get_fstatus)
+
+
+/* unsigned int srmmu_get_faddr(void) */
+ENTRY(srmmu_get_faddr)
+	mov	SRMMU_FAULT_ADDR, %o0
+LEON_PI(lda     [%o0] ASI_LEON_MMUREGS, %o0)
+SUN_PI_(lda	[%o0] ASI_M_MMUREGS, %o0)
+	retl
+	 nop
+ENDPROC(srmmu_get_faddr)
-- 
cgit v1.2.3


From b0acd2495e2a7f2655b9d4c761bd09e6dd05fbc4 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Fri, 25 May 2012 21:20:18 +0000
Subject: sparc32: drop LEON hack for ASI_M_MMUREGS

All users of MMUREGS ASI is now LEON/SUN aware,
so this is no longer required.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
---
 arch/sparc/include/asm/asi.h | 4 ----
 1 file changed, 4 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/include/asm/asi.h b/arch/sparc/include/asm/asi.h
index cbb93e5141de..61ebe7411ceb 100644
--- a/arch/sparc/include/asm/asi.h
+++ b/arch/sparc/include/asm/asi.h
@@ -40,11 +40,7 @@
 #define ASI_M_UNA01         0x01   /* Same here... */
 #define ASI_M_MXCC          0x02   /* Access to TI VIKING MXCC registers */
 #define ASI_M_FLUSH_PROBE   0x03   /* Reference MMU Flush/Probe; rw, ss */
-#ifndef CONFIG_SPARC_LEON
 #define ASI_M_MMUREGS       0x04   /* MMU Registers; rw, ss */
-#else
-#define ASI_M_MMUREGS       0x19
-#endif /* CONFIG_SPARC_LEON */
 #define ASI_M_TLBDIAG       0x05   /* MMU TLB only Diagnostics */
 #define ASI_M_DIAGS         0x06   /* Reference MMU Diagnostics */
 #define ASI_M_IODIAG        0x07   /* MMU I/O TLB only Diagnostics */
-- 
cgit v1.2.3


From 805918f80fb11d95e9b117a6faf5a6a7a8339e49 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Fri, 25 May 2012 21:20:19 +0000
Subject: sparc32: srmmu_probe now knows about leon too

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
---
 arch/sparc/include/asm/leon.h     |  2 +-
 arch/sparc/include/asm/pgtsrmmu.h | 17 -----------------
 arch/sparc/mm/leon_mm.c           |  2 +-
 arch/sparc/mm/srmmu.c             | 25 +++++++++++++++++++++----
 4 files changed, 23 insertions(+), 23 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/include/asm/leon.h b/arch/sparc/include/asm/leon.h
index 995c4e05be6d..ba46083ee42e 100644
--- a/arch/sparc/include/asm/leon.h
+++ b/arch/sparc/include/asm/leon.h
@@ -197,7 +197,7 @@ static inline int sparc_leon3_cpuid(void)
 #ifndef __ASSEMBLY__
 struct vm_area_struct;
 
-extern unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr);
+extern unsigned long leon_swprobe(unsigned long vaddr, unsigned long *paddr);
 extern void leon_flush_icache_all(void);
 extern void leon_flush_dcache_all(void);
 extern void leon_flush_cache_all(void);
diff --git a/arch/sparc/include/asm/pgtsrmmu.h b/arch/sparc/include/asm/pgtsrmmu.h
index 72f71214ef87..79da17866fa8 100644
--- a/arch/sparc/include/asm/pgtsrmmu.h
+++ b/arch/sparc/include/asm/pgtsrmmu.h
@@ -166,23 +166,6 @@ static inline void srmmu_flush_whole_tlb(void)
 
 }
 
-/* These flush types are not available on all chips... */
-#ifndef CONFIG_SPARC_LEON
-static inline unsigned long srmmu_hwprobe(unsigned long vaddr)
-{
-	unsigned long retval;
-
-	vaddr &= PAGE_MASK;
-	__asm__ __volatile__("lda [%1] %2, %0\n\t" :
-			     "=r" (retval) :
-			     "r" (vaddr | 0x400), "i" (ASI_M_FLUSH_PROBE));
-
-	return retval;
-}
-#else
-#define srmmu_hwprobe(addr) srmmu_swprobe(addr, 0)
-#endif
-
 static inline int
 srmmu_get_pte (unsigned long addr)
 {
diff --git a/arch/sparc/mm/leon_mm.c b/arch/sparc/mm/leon_mm.c
index 4c67ae6e5023..5bed085a2c17 100644
--- a/arch/sparc/mm/leon_mm.c
+++ b/arch/sparc/mm/leon_mm.c
@@ -32,7 +32,7 @@ static inline unsigned long leon_get_ctable_ptr(void)
 }
 
 
-unsigned long srmmu_swprobe(unsigned long vaddr, unsigned long *paddr)
+unsigned long leon_swprobe(unsigned long vaddr, unsigned long *paddr)
 {
 
 	unsigned int ctxtbl;
diff --git a/arch/sparc/mm/srmmu.c b/arch/sparc/mm/srmmu.c
index 256db6b22c54..62e3f5773303 100644
--- a/arch/sparc/mm/srmmu.c
+++ b/arch/sparc/mm/srmmu.c
@@ -646,6 +646,23 @@ static void __init srmmu_allocate_ptable_skeleton(unsigned long start,
 	}
 }
 
+/* These flush types are not available on all chips... */
+static inline unsigned long srmmu_probe(unsigned long vaddr)
+{
+	unsigned long retval;
+
+	if (sparc_cpu_model != sparc_leon) {
+
+		vaddr &= PAGE_MASK;
+		__asm__ __volatile__("lda [%1] %2, %0\n\t" :
+				     "=r" (retval) :
+				     "r" (vaddr | 0x400), "i" (ASI_M_FLUSH_PROBE));
+	} else {
+		retval = leon_swprobe(vaddr, 0);
+	}
+	return retval;
+}
+
 /*
  * This is much cleaner than poking around physical address space
  * looking at the prom's page table directly which is what most
@@ -665,7 +682,7 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start,
 			break; /* probably wrap around */
 		if(start == 0xfef00000)
 			start = KADB_DEBUGGER_BEGVM;
-		if(!(prompte = srmmu_hwprobe(start))) {
+		if(!(prompte = srmmu_probe(start))) {
 			start += PAGE_SIZE;
 			continue;
 		}
@@ -674,12 +691,12 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start,
 		what = 0;
     
 		if(!(start & ~(SRMMU_REAL_PMD_MASK))) {
-			if(srmmu_hwprobe((start-PAGE_SIZE) + SRMMU_REAL_PMD_SIZE) == prompte)
+			if(srmmu_probe((start-PAGE_SIZE) + SRMMU_REAL_PMD_SIZE) == prompte)
 				what = 1;
 		}
     
 		if(!(start & ~(SRMMU_PGDIR_MASK))) {
-			if(srmmu_hwprobe((start-PAGE_SIZE) + SRMMU_PGDIR_SIZE) ==
+			if(srmmu_probe((start-PAGE_SIZE) + SRMMU_PGDIR_SIZE) ==
 			   prompte)
 				what = 2;
 		}
@@ -1156,7 +1173,7 @@ static void turbosparc_flush_page_to_ram(unsigned long page)
 #ifdef TURBOSPARC_WRITEBACK
 	volatile unsigned long clear;
 
-	if (srmmu_hwprobe(page))
+	if (srmmu_probe(page))
 		turbosparc_flush_page_cache(page);
 	clear = srmmu_get_fstatus();
 #endif
-- 
cgit v1.2.3


From 3732106a1a565a592966290fbcef322db9933f91 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Sun, 27 May 2012 23:35:16 +0200
Subject: sparc32: refactor cpu_idle()

With the removal of sun4c we can use the same cpu_idle()
implementation on UP and SMP.
This also fix it so we use the same version independent on LEON
enabled or not.

V2: Fixed whitespace issue pointed out by Josip Rodin.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Josip Rodin <joy@entuzijast.net>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
---
 arch/sparc/kernel/process_32.c | 35 +++++------------------------------
 1 file changed, 5 insertions(+), 30 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c
index fe6787cc62fc..cb36e82dcd5d 100644
--- a/arch/sparc/kernel/process_32.c
+++ b/arch/sparc/kernel/process_32.c
@@ -65,50 +65,25 @@ extern void fpsave(unsigned long *, unsigned long *, void *, unsigned long *);
 struct task_struct *last_task_used_math = NULL;
 struct thread_info *current_set[NR_CPUS];
 
-#ifndef CONFIG_SMP
-
 /*
  * the idle loop on a Sparc... ;)
  */
 void cpu_idle(void)
 {
-	/* endless idle loop with no priority at all */
-	for (;;) {
-		if (pm_idle) {
-			while (!need_resched())
-				(*pm_idle)();
-		} else {
-			while (!need_resched())
-				cpu_relax();
-		}
-		schedule_preempt_disabled();
-	}
-}
-
-#else
+	set_thread_flag(TIF_POLLING_NRFLAG);
 
-/* This is being executed in task 0 'user space'. */
-void cpu_idle(void)
-{
-        set_thread_flag(TIF_POLLING_NRFLAG);
 	/* endless idle loop with no priority at all */
-	while(1) {
-#ifdef CONFIG_SPARC_LEON
-		if (pm_idle) {
-			while (!need_resched())
+	for (;;) {
+		while (!need_resched()) {
+			if (pm_idle)
 				(*pm_idle)();
-		} else
-#endif
-		{
-			while (!need_resched())
+			else
 				cpu_relax();
 		}
 		schedule_preempt_disabled();
 	}
 }
 
-#endif
-
 /* XXX cli/sti -> local_irq_xxx here, check this works once SMP is fixed. */
 void machine_halt(void)
 {
-- 
cgit v1.2.3


From 556626adf1dc1ee88183b7ba267912b87b063a57 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Sat, 26 May 2012 04:43:27 +0000
Subject: sparc32,leon: always include leon_pmc in build

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
---
 arch/sparc/kernel/Makefile   |  2 +-
 arch/sparc/kernel/leon_pmc.c | 15 +++++++++------
 2 files changed, 10 insertions(+), 7 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
index 43af0d619a3a..6cf591b7e1c6 100644
--- a/arch/sparc/kernel/Makefile
+++ b/arch/sparc/kernel/Makefile
@@ -52,7 +52,7 @@ obj-y                   += of_device_$(BITS).o
 obj-$(CONFIG_SPARC64)   += prom_irqtrans.o
 
 obj-$(CONFIG_SPARC32)   += leon_kernel.o
-obj-$(CONFIG_SPARC_LEON)+= leon_pmc.o
+obj-$(CONFIG_SPARC32)   += leon_pmc.o
 
 obj-$(CONFIG_SPARC64)   += reboot.o
 obj-$(CONFIG_SPARC64)   += sysfs.o
diff --git a/arch/sparc/kernel/leon_pmc.c b/arch/sparc/kernel/leon_pmc.c
index 519ca923f59f..4e174321097d 100644
--- a/arch/sparc/kernel/leon_pmc.c
+++ b/arch/sparc/kernel/leon_pmc.c
@@ -7,6 +7,7 @@
 #include <linux/pm.h>
 
 #include <asm/leon_amba.h>
+#include <asm/cpu_type.h>
 #include <asm/leon.h>
 
 /* List of Systems that need fixup instructions around power-down instruction */
@@ -65,13 +66,15 @@ void pmc_leon_idle(void)
 /* Install LEON Power Down function */
 static int __init leon_pmc_install(void)
 {
-	/* Assign power management IDLE handler */
-	if (pmc_leon_need_fixup())
-		pm_idle = pmc_leon_idle_fixup;
-	else
-		pm_idle = pmc_leon_idle;
+	if (sparc_cpu_model == sparc_leon) {
+		/* Assign power management IDLE handler */
+		if (pmc_leon_need_fixup())
+			pm_idle = pmc_leon_idle_fixup;
+		else
+			pm_idle = pmc_leon_idle;
 
-	printk(KERN_INFO "leon: power management initialized\n");
+		printk(KERN_INFO "leon: power management initialized\n");
+	}
 
 	return 0;
 }
-- 
cgit v1.2.3


From 87e677c4122e732dd1f7142ba7b2d4823576a199 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Sat, 26 May 2012 15:56:03 +0200
Subject: sparc32,leon: always support leon in ioport

Unconditially define pci32_dma_ops as this is used
for leon.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
---
 arch/sparc/include/asm/dma-mapping.h |  9 +++++++--
 arch/sparc/kernel/ioport.c           | 11 ++---------
 2 files changed, 9 insertions(+), 11 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/include/asm/dma-mapping.h b/arch/sparc/include/asm/dma-mapping.h
index 48a7c65731d2..8493fd3c7ba5 100644
--- a/arch/sparc/include/asm/dma-mapping.h
+++ b/arch/sparc/include/asm/dma-mapping.h
@@ -12,13 +12,18 @@ extern int dma_supported(struct device *dev, u64 mask);
 #define dma_alloc_noncoherent(d, s, h, f) dma_alloc_coherent(d, s, h, f)
 #define dma_free_noncoherent(d, s, v, h) dma_free_coherent(d, s, v, h)
 
-extern struct dma_map_ops *dma_ops, pci32_dma_ops;
+extern struct dma_map_ops *dma_ops;
+extern struct dma_map_ops *leon_dma_ops;
+extern struct dma_map_ops pci32_dma_ops;
+
 extern struct bus_type pci_bus_type;
 
 static inline struct dma_map_ops *get_dma_ops(struct device *dev)
 {
 #if defined(CONFIG_SPARC32) && defined(CONFIG_PCI)
-	if (dev->bus == &pci_bus_type)
+	if (sparc_cpu_model == sparc_leon)
+		return leon_dma_ops;
+	else if (dev->bus == &pci_bus_type)
 		return &pci32_dma_ops;
 #endif
 	return dma_ops;
diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c
index a2846f5e32d8..8bc4db01af32 100644
--- a/arch/sparc/kernel/ioport.c
+++ b/arch/sparc/kernel/ioport.c
@@ -427,9 +427,6 @@ arch_initcall(sparc_register_ioport);
 #endif /* CONFIG_SBUS */
 
 
-/* LEON reuses PCI DMA ops */
-#if defined(CONFIG_PCI) || defined(CONFIG_SPARC_LEON)
-
 /* Allocate and map kernel buffer using consistent mode DMA for a device.
  * hwdev should be valid struct pci_dev pointer for PCI devices.
  */
@@ -657,13 +654,9 @@ struct dma_map_ops pci32_dma_ops = {
 };
 EXPORT_SYMBOL(pci32_dma_ops);
 
-#endif /* CONFIG_PCI || CONFIG_SPARC_LEON */
-
-#ifdef CONFIG_SPARC_LEON
-struct dma_map_ops *dma_ops = &pci32_dma_ops;
-#elif defined(CONFIG_SBUS)
+/* leon re-uses pci32_dma_ops */
+struct dma_map_ops *leon_dma_ops = &pci32_dma_ops;
 struct dma_map_ops *dma_ops = &sbus_dma_ops;
-#endif
 
 EXPORT_SYMBOL(dma_ops);
 
-- 
cgit v1.2.3


From 95835335a3c187f418e86b453e1716cb5aad17be Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Sat, 26 May 2012 04:43:29 +0000
Subject: sparc32: support leon + sun in dma_make_coherent()

No need for two implementations - we check the cpu model.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Daniel Hellstrom <daniel@gaisler.com>
Cc: Konrad Eisele <konrad@gaisler.com>
---
 arch/sparc/kernel/ioport.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c
index 8bc4db01af32..f00945bed1b9 100644
--- a/arch/sparc/kernel/ioport.c
+++ b/arch/sparc/kernel/ioport.c
@@ -55,17 +55,13 @@ const struct sparc32_dma_ops *sparc32_dma_ops;
 /* This function must make sure that caches and memory are coherent after DMA
  * On LEON systems without cache snooping it flushes the entire D-CACHE.
  */
-#ifndef CONFIG_SPARC_LEON
 static inline void dma_make_coherent(unsigned long pa, unsigned long len)
 {
+	if (sparc_cpu_model == sparc_leon) {
+		if (!sparc_leon3_snooping_enabled())
+			leon_flush_dcache_all();
+	}
 }
-#else
-static inline void dma_make_coherent(unsigned long pa, unsigned long len)
-{
-	if (!sparc_leon3_snooping_enabled())
-		leon_flush_dcache_all();
-}
-#endif
 
 static void __iomem *_sparc_ioremap(struct resource *res, u32 bus, u32 pa, int sz);
 static void __iomem *_sparc_alloc_io(unsigned int busno, unsigned long phys,
-- 
cgit v1.2.3


From d4511e694ed9b903d8d3d3957180cabf23d2ee7f Mon Sep 17 00:00:00 2001
From: "David S. Miller" <davem@davemloft.net>
Date: Mon, 28 May 2012 00:07:03 -0700
Subject: sparc32: Export leon_dma_ops to modules.

Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/kernel/ioport.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'arch')

diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c
index f00945bed1b9..0f094db918c7 100644
--- a/arch/sparc/kernel/ioport.c
+++ b/arch/sparc/kernel/ioport.c
@@ -652,8 +652,9 @@ EXPORT_SYMBOL(pci32_dma_ops);
 
 /* leon re-uses pci32_dma_ops */
 struct dma_map_ops *leon_dma_ops = &pci32_dma_ops;
-struct dma_map_ops *dma_ops = &sbus_dma_ops;
+EXPORT_SYMBOL(leon_dma_ops);
 
+struct dma_map_ops *dma_ops = &sbus_dma_ops;
 EXPORT_SYMBOL(dma_ops);
 
 
-- 
cgit v1.2.3


From 1ddb22e13dea3f9511c8e934331e1e44b666bc79 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Tue, 29 May 2012 08:14:12 +0000
Subject: sparc32,leon: fix leon bootup

head_32.S failed to set cputypval for leon, causing boot to fail.
The boot failed because we failed to recognize this was a LEON
cpu so we did not preoperly run-time patch the the kernel.
This resulted in an early crash.

Reported-by: Daniel Hellstrom <daniel@gaisler.com>
Tested-by: Daniel Hellstrom <daniel@gaisler.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Konrad Eisele <konrad@gaisler.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/kernel/head_32.S | 73 +++++++++++++++++++++++++--------------------
 1 file changed, 41 insertions(+), 32 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/kernel/head_32.S b/arch/sparc/kernel/head_32.S
index cdc7f29ba17b..5364a05177c2 100644
--- a/arch/sparc/kernel/head_32.S
+++ b/arch/sparc/kernel/head_32.S
@@ -372,36 +372,9 @@ execute_in_high_mem:
 		sethi	%hi(linux_dbvec), %g1
 		st	%o1, [%g1 + %lo(linux_dbvec)]
 
-		/* Check if this is a LEON CPU.
-		 * Skip getprops call if it is
+		/* Get the machine type via the romvec
+		 * getprops node operation
 		 */
-		srl	%g3, PSR_IMPL_SHIFT, %g3
-		and	%g3, PSR_IMPL_SHIFTED_MASK, %g3
-		cmp	%g3, PSR_IMPL_LEON
-		 bne	get_cputype
-
-
-		/* LEON CPU - set boot_cpu_id */
-		sethi	%hi(boot_cpu_id), %g2	! boot-cpu index
-
-#ifdef CONFIG_SMP
-		ldub	[%g2 + %lo(boot_cpu_id)], %g1
-		cmp	%g1, 0xff		! unset means first CPU
-		bne	leon_smp_cpu_startup	! continue only with master
-		 nop
-#endif
-		/* Get CPU-ID from most significant 4-bit of ASR17 */
-		rd     %asr17, %g1
-		srl    %g1, 28, %g1
-
-		/* Update boot_cpu_id only on boot cpu */
-		stub	%g1, [%g2 + %lo(boot_cpu_id)]
-
-		ba continue_boot
-		 nop
-
-/* Get the machine type via the mysterious romvec node operations. */
-get_cputype:
 		add	%g7, 0x1c, %l1
 		ld	[%l1], %l0
 		ld	[%l0], %l0
@@ -420,10 +393,26 @@ get_cputype:
 						! to a buf where above string
 						! will get stored by the prom.
 
-/* Check to cputype. We may be booted on a sun4u (64 bit box),
- * and sun4d needs special treatment.
- */
+
+		/* Check value of "compatible" property.
+		 * "value" => "model"
+		 * leon => sparc_leon
+		 * sun4m => sun4m
+		 * sun4s => sun4m
+		 * sun4d => sun4d
+		 * sun4e => "no_sun4e_here"
+		 * '*'   => "no_sun4u_here"
+		 * Check single letters only
+		 */
+
 		set	cputypval, %o2
+		/* If cputypval[0] == 'l' (lower case letter L) this is leon */
+		ldub	[%o2], %l1
+		cmp	%l1, 'l'
+		be	leon_init
+		 nop
+
+		/* Check cputypval[4] to find the sun model */
 		ldub	[%o2 + 0x4], %l1
 
 		cmp	%l1, 'm'
@@ -438,6 +427,26 @@ get_cputype:
 		b	no_sun4u_here		! AIEEE, a V9 sun4u... Get our BIG BROTHER kernel :))
 		 nop
 
+leon_init:
+		/* LEON CPU - set boot_cpu_id */
+		sethi	%hi(boot_cpu_id), %g2	! boot-cpu index
+
+#ifdef CONFIG_SMP
+		ldub	[%g2 + %lo(boot_cpu_id)], %g1
+		cmp	%g1, 0xff		! unset means first CPU
+		bne	leon_smp_cpu_startup	! continue only with master
+		 nop
+#endif
+		/* Get CPU-ID from most significant 4-bit of ASR17 */
+		rd     %asr17, %g1
+		srl    %g1, 28, %g1
+
+		/* Update boot_cpu_id only on boot cpu */
+		stub	%g1, [%g2 + %lo(boot_cpu_id)]
+
+		ba continue_boot
+		 nop
+
 /* CPUID in bootbus can be found at PA 0xff0140000 */
 #define SUN4D_BOOTBUS_CPUID     0xf0140000
 
-- 
cgit v1.2.3


From 4fd8bc671887fa02bc19722f6c3707bd7b8a2604 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Tue, 29 May 2012 08:14:13 +0000
Subject: sparc32: remove unused variable in head_32.S

It was assigned, but never referenced later.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/kernel/head_32.S | 8 --------
 1 file changed, 8 deletions(-)

(limited to 'arch')

diff --git a/arch/sparc/kernel/head_32.S b/arch/sparc/kernel/head_32.S
index 5364a05177c2..afeb1d770303 100644
--- a/arch/sparc/kernel/head_32.S
+++ b/arch/sparc/kernel/head_32.S
@@ -30,10 +30,6 @@
  * the cpu-type
  */
 	.align 4
-cputyp:
-        .word   1
-
-	.align 4
 	.globl cputypval
 cputypval:
 	.asciz "sun4m"
@@ -509,10 +505,6 @@ continue_boot:
 /* Aieee, now set PC and nPC, enable traps, give ourselves a stack and it's
  * show-time!
  */
-
-		sethi	%hi(cputyp), %o0
-		st	%g4, [%o0 + %lo(cputyp)]
-
 		/* Turn on Supervisor, EnableFloating, and all the PIL bits.
 		 * Also puts us in register window zero with traps off.
 		 */
-- 
cgit v1.2.3


From e49e6ff553ffee2e747a8e331a9dcf3a80555944 Mon Sep 17 00:00:00 2001
From: Sam Ravnborg <sam@ravnborg.org>
Date: Tue, 29 May 2012 08:14:14 +0000
Subject: sparc: fix sparc64 build due to leon.h inclusion

Stephen Rothwell <sfr@canb.auug.org.au> reported following error:
In file included from arch/sparc/kernel/prom_common.c:26:0:
arch/sparc/include/asm/leon.h:221:9: error: unknown type name 'irq_flow_handler_t'
arch/sparc/include/asm/leon.h:224:10: error: unknown type name 'irq_flow_handler_t'

Fix this by:
1) Avoid including leon.h in prom_commen.h (not needed)
2) Include irq.h in leon.h to avoid the missing symbol error

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 arch/sparc/include/asm/leon.h   | 1 +
 arch/sparc/kernel/prom_common.c | 1 -
 2 files changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch')

diff --git a/arch/sparc/include/asm/leon.h b/arch/sparc/include/asm/leon.h
index ba46083ee42e..3375c6293893 100644
--- a/arch/sparc/include/asm/leon.h
+++ b/arch/sparc/include/asm/leon.h
@@ -213,6 +213,7 @@ struct leon3_cacheregs {
 	unsigned long dccr;	/* 0x0c - Data Cache Configuration Register */
 };
 
+#include <linux/irq.h>
 #include <linux/interrupt.h>
 
 struct device_node;
diff --git a/arch/sparc/kernel/prom_common.c b/arch/sparc/kernel/prom_common.c
index 741df916c124..1303021748c8 100644
--- a/arch/sparc/kernel/prom_common.c
+++ b/arch/sparc/kernel/prom_common.c
@@ -23,7 +23,6 @@
 #include <linux/of_pdt.h>
 #include <asm/prom.h>
 #include <asm/oplib.h>
-#include <asm/leon.h>
 
 #include "prom.h"
 
-- 
cgit v1.2.3