powerpc: Move swsusp.S over to arch/powerpc

... and rename it to swsusp_32.S, since it's 32-bit only at this stage.

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 0 insertions, 349 deletions

diff --git a/arch/ppc/kernel/swsusp.S b/arch/ppc/kernel/swsusp.S
deleted file mode 100644
index 69773cc1a85..00000000000
--- a/arch/ppc/kernel/swsusp.S
+++ /dev/null
@@ -1,349 +0,0 @@
-#include <linux/config.h>
-#include <linux/threads.h>
-#include <asm/processor.h>
-#include <asm/page.h>
-#include <asm/cputable.h>
-#include <asm/thread_info.h>
-#include <asm/ppc_asm.h>
-#include <asm/asm-offsets.h>
-
-
-/*
- * Structure for storing CPU registers on the save area.
- */
-#define SL_SP		0
-#define SL_PC		4
-#define SL_MSR		8
-#define SL_SDR1		0xc
-#define SL_SPRG0	0x10	/* 4 sprg's */
-#define SL_DBAT0	0x20
-#define SL_IBAT0	0x28
-#define SL_DBAT1	0x30
-#define SL_IBAT1	0x38
-#define SL_DBAT2	0x40
-#define SL_IBAT2	0x48
-#define SL_DBAT3	0x50
-#define SL_IBAT3	0x58
-#define SL_TB		0x60
-#define SL_R2		0x68
-#define SL_CR		0x6c
-#define SL_LR		0x70
-#define SL_R12		0x74	/* r12 to r31 */
-#define SL_SIZE		(SL_R12 + 80)
-
-	.section .data
-	.align	5
-
-_GLOBAL(swsusp_save_area)
-	.space	SL_SIZE
-
-
-	.section .text
-	.align	5
-
-_GLOBAL(swsusp_arch_suspend)
-
-	lis	r11,swsusp_save_area@h
-	ori	r11,r11,swsusp_save_area@l
-
-	mflr	r0
-	stw	r0,SL_LR(r11)
-	mfcr	r0
-	stw	r0,SL_CR(r11)
-	stw	r1,SL_SP(r11)
-	stw	r2,SL_R2(r11)
-	stmw	r12,SL_R12(r11)
-
-	/* Save MSR & SDR1 */
-	mfmsr	r4
-	stw	r4,SL_MSR(r11)
-	mfsdr1	r4
-	stw	r4,SL_SDR1(r11)
-
-	/* Get a stable timebase and save it */
-1:	mftbu	r4
-	stw	r4,SL_TB(r11)
-	mftb	r5
-	stw	r5,SL_TB+4(r11)
-	mftbu	r3
-	cmpw	r3,r4
-	bne	1b
-
-	/* Save SPRGs */
-	mfsprg	r4,0
-	stw	r4,SL_SPRG0(r11)
-	mfsprg	r4,1
-	stw	r4,SL_SPRG0+4(r11)
-	mfsprg	r4,2
-	stw	r4,SL_SPRG0+8(r11)
-	mfsprg	r4,3
-	stw	r4,SL_SPRG0+12(r11)
-
-	/* Save BATs */
-	mfdbatu	r4,0
-	stw	r4,SL_DBAT0(r11)
-	mfdbatl	r4,0
-	stw	r4,SL_DBAT0+4(r11)
-	mfdbatu	r4,1
-	stw	r4,SL_DBAT1(r11)
-	mfdbatl	r4,1
-	stw	r4,SL_DBAT1+4(r11)
-	mfdbatu	r4,2
-	stw	r4,SL_DBAT2(r11)
-	mfdbatl	r4,2
-	stw	r4,SL_DBAT2+4(r11)
-	mfdbatu	r4,3
-	stw	r4,SL_DBAT3(r11)
-	mfdbatl	r4,3
-	stw	r4,SL_DBAT3+4(r11)
-	mfibatu	r4,0
-	stw	r4,SL_IBAT0(r11)
-	mfibatl	r4,0
-	stw	r4,SL_IBAT0+4(r11)
-	mfibatu	r4,1
-	stw	r4,SL_IBAT1(r11)
-	mfibatl	r4,1
-	stw	r4,SL_IBAT1+4(r11)
-	mfibatu	r4,2
-	stw	r4,SL_IBAT2(r11)
-	mfibatl	r4,2
-	stw	r4,SL_IBAT2+4(r11)
-	mfibatu	r4,3
-	stw	r4,SL_IBAT3(r11)
-	mfibatl	r4,3
-	stw	r4,SL_IBAT3+4(r11)
-
-#if  0
-	/* Backup various CPU config stuffs */
-	bl	__save_cpu_setup
-#endif
-	/* Call the low level suspend stuff (we should probably have made
-	 * a stackframe...
-	 */
-	bl	swsusp_save
-
-	/* Restore LR from the save area */
-	lis	r11,swsusp_save_area@h
-	ori	r11,r11,swsusp_save_area@l
-	lwz	r0,SL_LR(r11)
-	mtlr	r0
-
-	blr
-
-
-/* Resume code */
-_GLOBAL(swsusp_arch_resume)
-
-	/* Stop pending alitvec streams and memory accesses */
-BEGIN_FTR_SECTION
-	DSSALL
-END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC)
- 	sync
-
-	/* Disable MSR:DR to make sure we don't take a TLB or
-	 * hash miss during the copy, as our hash table will
-	 * for a while be unuseable. For .text, we assume we are
-	 * covered by a BAT. This works only for non-G5 at this
-	 * point. G5 will need a better approach, possibly using
-	 * a small temporary hash table filled with large mappings,
-	 * disabling the MMU completely isn't a good option for
-	 * performance reasons.
-	 * (Note that 750's may have the same performance issue as
-	 * the G5 in this case, we should investigate using moving
-	 * BATs for these CPUs)
-	 */
-	mfmsr	r0
-	sync
-	rlwinm	r0,r0,0,28,26		/* clear MSR_DR */
-	mtmsr	r0
-	sync
-	isync
-
-	/* Load ptr the list of pages to copy in r3 */
-	lis	r11,(pagedir_nosave - KERNELBASE)@h
-	ori	r11,r11,pagedir_nosave@l
-	lwz	r10,0(r11)
-
-	/* Copy the pages. This is a very basic implementation, to
-	 * be replaced by something more cache efficient */
-1:
-	tophys(r3,r10)
-	li	r0,256
-	mtctr	r0
-	lwz	r11,pbe_address(r3)	/* source */
-	tophys(r5,r11)
-	lwz	r10,pbe_orig_address(r3)	/* destination */
-	tophys(r6,r10)
-2:
-	lwz	r8,0(r5)
-	lwz	r9,4(r5)
-	lwz	r10,8(r5)
-	lwz	r11,12(r5)
-	addi	r5,r5,16
-	stw	r8,0(r6)
-	stw	r9,4(r6)
-	stw	r10,8(r6)
-	stw	r11,12(r6)
-	addi	r6,r6,16
-	bdnz	2b
-	lwz		r10,pbe_next(r3)
-	cmpwi	0,r10,0
-	bne	1b
-
-	/* Do a very simple cache flush/inval of the L1 to ensure
-	 * coherency of the icache
-	 */
-	lis	r3,0x0002
-	mtctr	r3
-	li	r3, 0
-1:
-	lwz	r0,0(r3)
-	addi	r3,r3,0x0020
-	bdnz	1b
-	isync
-	sync
-
-	/* Now flush those cache lines */
-	lis	r3,0x0002
-	mtctr	r3
-	li	r3, 0
-1:
-	dcbf	0,r3
-	addi	r3,r3,0x0020
-	bdnz	1b
-	sync
-
-	/* Ok, we are now running with the kernel data of the old
-	 * kernel fully restored. We can get to the save area
-	 * easily now. As for the rest of the code, it assumes the
-	 * loader kernel and the booted one are exactly identical
-	 */
-	lis	r11,swsusp_save_area@h
-	ori	r11,r11,swsusp_save_area@l
-	tophys(r11,r11)
-
-#if 0
-	/* Restore various CPU config stuffs */
-	bl	__restore_cpu_setup
-#endif
-	/* Restore the BATs, and SDR1.  Then we can turn on the MMU.
-	 * This is a bit hairy as we are running out of those BATs,
-	 * but first, our code is probably in the icache, and we are
-	 * writing the same value to the BAT, so that should be fine,
-	 * though a better solution will have to be found long-term
-	 */
-	lwz	r4,SL_SDR1(r11)
-	mtsdr1	r4
-	lwz	r4,SL_SPRG0(r11)
-	mtsprg	0,r4
-	lwz	r4,SL_SPRG0+4(r11)
-	mtsprg	1,r4
-	lwz	r4,SL_SPRG0+8(r11)
-	mtsprg	2,r4
-	lwz	r4,SL_SPRG0+12(r11)
-	mtsprg	3,r4
-
-#if 0
-	lwz	r4,SL_DBAT0(r11)
-	mtdbatu	0,r4
-	lwz	r4,SL_DBAT0+4(r11)
-	mtdbatl	0,r4
-	lwz	r4,SL_DBAT1(r11)
-	mtdbatu	1,r4
-	lwz	r4,SL_DBAT1+4(r11)
-	mtdbatl	1,r4
-	lwz	r4,SL_DBAT2(r11)
-	mtdbatu	2,r4
-	lwz	r4,SL_DBAT2+4(r11)
-	mtdbatl	2,r4
-	lwz	r4,SL_DBAT3(r11)
-	mtdbatu	3,r4
-	lwz	r4,SL_DBAT3+4(r11)
-	mtdbatl	3,r4
-	lwz	r4,SL_IBAT0(r11)
-	mtibatu	0,r4
-	lwz	r4,SL_IBAT0+4(r11)
-	mtibatl	0,r4
-	lwz	r4,SL_IBAT1(r11)
-	mtibatu	1,r4
-	lwz	r4,SL_IBAT1+4(r11)
-	mtibatl	1,r4
-	lwz	r4,SL_IBAT2(r11)
-	mtibatu	2,r4
-	lwz	r4,SL_IBAT2+4(r11)
-	mtibatl	2,r4
-	lwz	r4,SL_IBAT3(r11)
-	mtibatu	3,r4
-	lwz	r4,SL_IBAT3+4(r11)
-	mtibatl	3,r4
-#endif
-
-BEGIN_FTR_SECTION
-	li	r4,0
-	mtspr	SPRN_DBAT4U,r4
-	mtspr	SPRN_DBAT4L,r4
-	mtspr	SPRN_DBAT5U,r4
-	mtspr	SPRN_DBAT5L,r4
-	mtspr	SPRN_DBAT6U,r4
-	mtspr	SPRN_DBAT6L,r4
-	mtspr	SPRN_DBAT7U,r4
-	mtspr	SPRN_DBAT7L,r4
-	mtspr	SPRN_IBAT4U,r4
-	mtspr	SPRN_IBAT4L,r4
-	mtspr	SPRN_IBAT5U,r4
-	mtspr	SPRN_IBAT5L,r4
-	mtspr	SPRN_IBAT6U,r4
-	mtspr	SPRN_IBAT6L,r4
-	mtspr	SPRN_IBAT7U,r4
-	mtspr	SPRN_IBAT7L,r4
-END_FTR_SECTION_IFSET(CPU_FTR_HAS_HIGH_BATS)
-
-	/* Flush all TLBs */
-	lis	r4,0x1000
-1:	addic.	r4,r4,-0x1000
-	tlbie	r4
-	blt	1b
-	sync
-
-	/* restore the MSR and turn on the MMU */
-	lwz	r3,SL_MSR(r11)
-	bl	turn_on_mmu
-	tovirt(r11,r11)
-
-	/* Restore TB */
-	li	r3,0
-	mttbl	r3
-	lwz	r3,SL_TB(r11)
-	lwz	r4,SL_TB+4(r11)
-	mttbu	r3
-	mttbl	r4
-
-	/* Kick decrementer */
-	li	r0,1
-	mtdec	r0
-
-	/* Restore the callee-saved registers and return */
-	lwz	r0,SL_CR(r11)
-	mtcr	r0
-	lwz	r2,SL_R2(r11)
-	lmw	r12,SL_R12(r11)
-	lwz	r1,SL_SP(r11)
-	lwz	r0,SL_LR(r11)
-	mtlr	r0
-
-	// XXX Note: we don't really need to call swsusp_resume
-
-	li	r3,0
-	blr
-
-/* FIXME:This construct is actually not useful since we don't shut
- * down the instruction MMU, we could just flip back MSR-DR on.
- */
-turn_on_mmu:
-	mflr	r4
-	mtsrr0	r4
-	mtsrr1	r3
-	sync
-	isync
-	rfi
-