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| author | Manuel Lauss <manuel.lauss@googlemail.com> | 2010-05-24 19:42:52 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2010-07-05 18:17:30 +0200 |
| commit | 2e93d1ec080e4b21a34869129bda73f24ebb8950 (patch) | |
| tree | 7fff306e4dd252c60f0145c951cc4c46c9024252 /arch/mips/alchemy/common/sleeper.S | |
| parent | MIPS: Tracing: Cleanup of address space checking (diff) | |
| download | linux-2e93d1ec080e4b21a34869129bda73f24ebb8950.tar.xz linux-2e93d1ec080e4b21a34869129bda73f24ebb8950.zip | |
MIPS: Alchemy: sleepcode without compile-time cputype dependencies
Split the low-level sleepcode into per-cpu functions instead of
relying on compile-time-defined cpu type.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
To: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/1281/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/alchemy/common/sleeper.S')
| -rw-r--r-- | arch/mips/alchemy/common/sleeper.S | 81 |
1 files changed, 53 insertions, 28 deletions
diff --git a/arch/mips/alchemy/common/sleeper.S b/arch/mips/alchemy/common/sleeper.S index 4f4b16741d12..77f3c743b716 100644 --- a/arch/mips/alchemy/common/sleeper.S +++ b/arch/mips/alchemy/common/sleeper.S @@ -22,10 +22,9 @@ .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(au1xxx_save_and_sleep) + +/* preparatory stuff */ +.macro SETUP_SLEEP subu sp, PT_SIZE sw $1, PT_R1(sp) sw $2, PT_R2(sp) @@ -69,12 +68,32 @@ LEAF(au1xxx_save_and_sleep) */ lui t3, 0xb190 /* sys_xxx */ sw sp, 0x0018(t3) - la k0, 3f /* resume path */ + la k0, alchemy_sleep_wakeup /* resume path */ sw k0, 0x001c(t3) +.endm - /* Put SDRAM into self refresh: Preload instructions into cache, - * issue a precharge, auto/self refresh, then sleep commands to it. - */ +.macro DO_SLEEP + /* 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 +.endm + +/* sleep code for Au1000/Au1100/Au1500 memory controller type */ +LEAF(alchemy_sleep_au1000) + + SETUP_SLEEP + + /* cache following instructions, as memory gets put to sleep */ la t0, 1f .set mips3 cache 0x14, 0(t0) @@ -84,17 +103,32 @@ LEAF(au1xxx_save_and_sleep) .set mips0 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) + DO_SLEEP + +END(alchemy_sleep_au1000) + +/* sleep code for Au1550/Au1200 memory controller type */ +LEAF(alchemy_sleep_au1550) + + SETUP_SLEEP + + /* cache following instructions, as memory gets put to sleep */ + la t0, 1f + .set mips3 + cache 0x14, 0(t0) + cache 0x14, 32(t0) + cache 0x14, 64(t0) + cache 0x14, 96(t0) + .set mips0 + +1: lui a0, 0xb400 /* mem_xxx */ sw zero, 0x08c0(a0) /* Precharge */ sync sw zero, 0x08d0(a0) /* Self Refresh */ @@ -114,26 +148,17 @@ LEAF(au1xxx_save_and_sleep) and t1, t0, t1 /* clear CE[1:0] */ sw t1, 0x0840(a0) /* mem_sdconfiga */ sync -#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 + DO_SLEEP + +END(alchemy_sleep_au1550) + /* This is where we return upon wakeup. * Reload all of the registers and return. */ -3: lw k0, 0x20(sp) +LEAF(alchemy_sleep_wakeup) + lw k0, 0x20(sp) mtc0 k0, CP0_STATUS lw k0, 0x1c(sp) mtc0 k0, CP0_CONTEXT @@ -169,4 +194,4 @@ LEAF(au1xxx_save_and_sleep) lw $31, PT_R31(sp) jr ra addiu sp, PT_SIZE -END(au1xxx_save_and_sleep) +END(alchemy_sleep_wakeup) |