diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2011-05-14 12:06:36 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2011-05-14 12:06:36 +0200 |
| commit | a18f22a968de17b29f2310cdb7ba69163e65ec15 (patch) | |
| tree | a7d56d88fad5e444d7661484109758a2f436129e /arch/unicore32/kernel/hibernate_asm.S | |
| parent | a1c57e0fec53defe745e64417eacdbd3618c3e66 (diff) | |
| parent | 798778b8653f64b7b2162ac70eca10367cff6ce8 (diff) | |
Merge branch 'consolidate-clksrc-i8253' of master.kernel.org:~rmk/linux-2.6-arm into timers/clocksource
Conflicts:
arch/ia64/kernel/cyclone.c
arch/mips/kernel/i8253.c
arch/x86/kernel/i8253.c
Reason: Resolve conflicts so further cleanups do not conflict further
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/unicore32/kernel/hibernate_asm.S')
| -rw-r--r-- | arch/unicore32/kernel/hibernate_asm.S | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/arch/unicore32/kernel/hibernate_asm.S b/arch/unicore32/kernel/hibernate_asm.S new file mode 100644 index 000000000000..cc3c65253c8c --- /dev/null +++ b/arch/unicore32/kernel/hibernate_asm.S @@ -0,0 +1,117 @@ +/* + * linux/arch/unicore32/kernel/hibernate_asm.S + * + * Code specific to PKUnity SoC and UniCore ISA + * + * Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn> + * Copyright (C) 2001-2010 Guan Xuetao + * + * 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/sys.h> +#include <linux/errno.h> +#include <linux/linkage.h> +#include <generated/asm-offsets.h> +#include <asm/page.h> +#include <asm/pgtable.h> +#include <asm/assembler.h> + +@ restore_image(pgd_t *resume_pg_dir, struct pbe *restore_pblist) +@ r0: resume_pg_dir +@ r1: restore_pblist +@ copy restore_pblist pages +@ restore registers from swsusp_arch_regs_cpu0 +@ +ENTRY(restore_image) + sub r0, r0, #PAGE_OFFSET + mov r5, #0 + movc p0.c6, r5, #6 @invalidate ITLB & DTLB + movc p0.c2, r0, #0 + nop + nop + nop + nop + nop + nop + nop + + .p2align 4,,7 +101: + csub.a r1, #0 + beq 109f + + ldw r6, [r1+], #PBE_ADDRESS + ldw r7, [r1+], #PBE_ORIN_ADDRESS + + movl ip, #128 +102: ldm.w (r8 - r15), [r6]+ + stm.w (r8 - r15), [r7]+ + sub.a ip, ip, #1 + bne 102b + + ldw r1, [r1+], #PBE_NEXT + b 101b + + .p2align 4,,7 +109: + /* go back to the original page tables */ + ldw r0, =swapper_pg_dir + sub r0, r0, #PAGE_OFFSET + mov r5, #0 + movc p0.c6, r5, #6 + movc p0.c2, r0, #0 + nop + nop + nop + nop + nop + nop + nop + +#ifdef CONFIG_UNICORE_FPU_F64 + ldw ip, 1f + add ip, ip, #SWSUSP_FPSTATE + lfm.w (f0 - f7 ), [ip]+ + lfm.w (f8 - f15), [ip]+ + lfm.w (f16 - f23), [ip]+ + lfm.w (f24 - f31), [ip]+ + ldw r4, [ip] + ctf r4, s31 +#endif + mov r0, #0x0 + ldw ip, 1f + add ip, ip, #SWSUSP_CPU + ldm.w (r4 - r15), [ip]+ + ldm (r16 - r27, sp, pc), [ip]+ @ Load all regs saved previously + + .align 2 +1: .long swsusp_arch_regs_cpu0 + + +@ swsusp_arch_suspend() +@ - prepare pc for resume, return from function without swsusp_save on resume +@ - save registers in swsusp_arch_regs_cpu0 +@ - call swsusp_save write suspend image + +ENTRY(swsusp_arch_suspend) + ldw ip, 1f + add ip, ip, #SWSUSP_CPU + stm.w (r4 - r15), [ip]+ + stm.w (r16 - r27, sp, lr), [ip]+ + +#ifdef CONFIG_UNICORE_FPU_F64 + ldw ip, 1f + add ip, ip, #SWSUSP_FPSTATE + sfm.w (f0 - f7 ), [ip]+ + sfm.w (f8 - f15), [ip]+ + sfm.w (f16 - f23), [ip]+ + sfm.w (f24 - f31), [ip]+ + cff r4, s31 + stw r4, [ip] +#endif + b swsusp_save @ no return + +1: .long swsusp_arch_regs_cpu0 |