diff options
author | Ingo Molnar <mingo@elte.hu> | 2009-01-18 18:15:49 +0100 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2009-01-18 18:15:49 +0100 |
commit | af37501c792107c2bde1524bdae38d9a247b841a (patch) | |
tree | b50ee90d29e72956b8b7d8d19677fe5996755d49 /arch/mips/alchemy/common/sleeper.S | |
parent | d859e29fe34cb833071b20aef860ee94fbad9bb2 (diff) | |
parent | 99937d6455cea95405ac681c86a857d0fcd530bd (diff) |
Merge branch 'core/percpu' into perfcounters/core
Conflicts:
arch/x86/include/asm/pda.h
We merge tip/core/percpu into tip/perfcounters/core because of a
semantic and contextual conflict: the former eliminates the PDA,
while the latter extends it with apic_perf_irqs field.
Resolve the conflict by moving the new field to the irq_cpustat
structure on 64-bit too.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/mips/alchemy/common/sleeper.S')
-rw-r--r-- | arch/mips/alchemy/common/sleeper.S | 118 |
1 files changed, 68 insertions, 50 deletions
diff --git a/arch/mips/alchemy/common/sleeper.S b/arch/mips/alchemy/common/sleeper.S index 3006e270c8b..4f4b16741d1 100644 --- a/arch/mips/alchemy/common/sleeper.S +++ b/arch/mips/alchemy/common/sleeper.S @@ -15,16 +15,17 @@ #include <asm/regdef.h> #include <asm/stackframe.h> + .extern __flush_cache_all + .text - .set macro - .set noat + .set noreorder + .set noat .align 5 /* Save all of the processor general registers and go to sleep. * A wakeup condition will get us back here to restore the registers. */ -LEAF(save_and_sleep) - +LEAF(au1xxx_save_and_sleep) subu sp, PT_SIZE sw $1, PT_R1(sp) sw $2, PT_R2(sp) @@ -33,14 +34,6 @@ LEAF(save_and_sleep) sw $5, PT_R5(sp) sw $6, PT_R6(sp) sw $7, PT_R7(sp) - sw $8, PT_R8(sp) - sw $9, PT_R9(sp) - sw $10, PT_R10(sp) - sw $11, PT_R11(sp) - sw $12, PT_R12(sp) - sw $13, PT_R13(sp) - sw $14, PT_R14(sp) - sw $15, PT_R15(sp) sw $16, PT_R16(sp) sw $17, PT_R17(sp) sw $18, PT_R18(sp) @@ -49,12 +42,9 @@ LEAF(save_and_sleep) sw $21, PT_R21(sp) sw $22, PT_R22(sp) sw $23, PT_R23(sp) - sw $24, PT_R24(sp) - sw $25, PT_R25(sp) sw $26, PT_R26(sp) sw $27, PT_R27(sp) sw $28, PT_R28(sp) - sw $29, PT_R29(sp) sw $30, PT_R30(sp) sw $31, PT_R31(sp) mfc0 k0, CP0_STATUS @@ -66,20 +56,26 @@ LEAF(save_and_sleep) mfc0 k0, CP0_CONFIG sw k0, 0x14(sp) + /* flush caches to make sure context is in memory */ + la t1, __flush_cache_all + lw t0, 0(t1) + jalr t0 + nop + /* Now set up the scratch registers so the boot rom will * return to this point upon wakeup. + * sys_scratch0 : SP + * sys_scratch1 : RA */ - la k0, 1f - lui k1, 0xb190 - ori k1, 0x18 - sw sp, 0(k1) - ori k1, 0x1c - sw k0, 0(k1) + lui t3, 0xb190 /* sys_xxx */ + sw sp, 0x0018(t3) + la k0, 3f /* resume path */ + sw k0, 0x001c(t3) -/* Put SDRAM into self refresh. Preload instructions into cache, - * issue a precharge, then auto refresh, then sleep commands to it. - */ - la t0, sdsleep + /* Put SDRAM into self refresh: Preload instructions into cache, + * issue a precharge, auto/self refresh, then sleep commands to it. + */ + la t0, 1f .set mips3 cache 0x14, 0(t0) cache 0x14, 32(t0) @@ -87,24 +83,57 @@ LEAF(save_and_sleep) cache 0x14, 96(t0) .set mips0 -sdsleep: - lui k0, 0xb400 - sw zero, 0x001c(k0) /* Precharge */ - sw zero, 0x0020(k0) /* Auto refresh */ - sw zero, 0x0030(k0) /* SDRAM sleep */ +1: lui a0, 0xb400 /* mem_xxx */ +#if defined(CONFIG_SOC_AU1000) || defined(CONFIG_SOC_AU1100) || \ + defined(CONFIG_SOC_AU1500) + sw zero, 0x001c(a0) /* Precharge */ + sync + sw zero, 0x0020(a0) /* Auto Refresh */ + sync + sw zero, 0x0030(a0) /* Sleep */ + sync +#endif + +#if defined(CONFIG_SOC_AU1550) || defined(CONFIG_SOC_AU1200) + sw zero, 0x08c0(a0) /* Precharge */ sync + sw zero, 0x08d0(a0) /* Self Refresh */ + sync + + /* wait for sdram to enter self-refresh mode */ + lui t0, 0x0100 +2: lw t1, 0x0850(a0) /* mem_sdstat */ + and t2, t1, t0 + beq t2, zero, 2b + nop - lui k1, 0xb190 - sw zero, 0x0078(k1) /* get ready to sleep */ + /* disable SDRAM clocks */ + lui t0, 0xcfff + ori t0, t0, 0xffff + lw t1, 0x0840(a0) /* mem_sdconfiga */ + and t1, t0, t1 /* clear CE[1:0] */ + sw t1, 0x0840(a0) /* mem_sdconfiga */ sync - sw zero, 0x007c(k1) /* Put processor to sleep */ +#endif + + /* put power supply and processor to sleep */ + sw zero, 0x0078(t3) /* sys_slppwr */ + sync + sw zero, 0x007c(t3) /* sys_sleep */ sync + nop + nop + nop + nop + nop + nop + nop + nop /* This is where we return upon wakeup. * Reload all of the registers and return. */ -1: nop - lw k0, 0x20(sp) +3: lw k0, 0x20(sp) mtc0 k0, CP0_STATUS lw k0, 0x1c(sp) mtc0 k0, CP0_CONTEXT @@ -113,10 +142,11 @@ sdsleep: lw k0, 0x14(sp) mtc0 k0, CP0_CONFIG - /* We need to catch the ealry Alchemy SOCs with + /* We need to catch the early Alchemy SOCs with * the write-only Config[OD] bit and set it back to one... */ jal au1x00_fixup_config_od + nop lw $1, PT_R1(sp) lw $2, PT_R2(sp) lw $3, PT_R3(sp) @@ -124,14 +154,6 @@ sdsleep: lw $5, PT_R5(sp) lw $6, PT_R6(sp) lw $7, PT_R7(sp) - lw $8, PT_R8(sp) - lw $9, PT_R9(sp) - lw $10, PT_R10(sp) - lw $11, PT_R11(sp) - lw $12, PT_R12(sp) - lw $13, PT_R13(sp) - lw $14, PT_R14(sp) - lw $15, PT_R15(sp) lw $16, PT_R16(sp) lw $17, PT_R17(sp) lw $18, PT_R18(sp) @@ -140,15 +162,11 @@ sdsleep: lw $21, PT_R21(sp) lw $22, PT_R22(sp) lw $23, PT_R23(sp) - lw $24, PT_R24(sp) - lw $25, PT_R25(sp) lw $26, PT_R26(sp) lw $27, PT_R27(sp) lw $28, PT_R28(sp) - lw $29, PT_R29(sp) lw $30, PT_R30(sp) lw $31, PT_R31(sp) - addiu sp, PT_SIZE - jr ra -END(save_and_sleep) + addiu sp, PT_SIZE +END(au1xxx_save_and_sleep) |