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| author | Shawn Guo <shawn.guo@linaro.org> | 2011-09-06 15:08:40 +0800 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2011-10-31 14:26:27 +0100 |
| commit | a1f1c7efb0c1c78b5e84455bb5a6c8b2bee3059c (patch) | |
| tree | 732ecae274d63faa98d4e3fa9091592bfb7ed9a4 /arch/arm/mach-imx/head-v7.S | |
| parent | 13eed9897a2160272df2804ac3bbd4d91c76e577 (diff) | |
arm/imx6q: add suspend/resume support
It adds suspend/resume support for imx6q.
Signed-off-by: Anson Huang <b20788@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/mach-imx/head-v7.S')
| -rw-r--r-- | arch/arm/mach-imx/head-v7.S | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/head-v7.S b/arch/arm/mach-imx/head-v7.S index ede908bca7d..6229efbc70c 100644 --- a/arch/arm/mach-imx/head-v7.S +++ b/arch/arm/mach-imx/head-v7.S @@ -12,6 +12,7 @@ #include <linux/linkage.h> #include <linux/init.h> +#include <asm/asm-offsets.h> #include <asm/hardware/cache-l2x0.h> .section ".text.head", "ax" @@ -69,3 +70,30 @@ ENTRY(v7_secondary_startup) b secondary_startup ENDPROC(v7_secondary_startup) #endif + +/* + * The following code is located into the .data section. This is to + * allow phys_l2x0_saved_regs to be accessed with a relative load + * as we are running on physical address here. + */ + .data + .align + + .macro pl310_resume + ldr r2, phys_l2x0_saved_regs + ldr r0, [r2, #L2X0_R_PHY_BASE] @ get physical base of l2x0 + ldr r1, [r2, #L2X0_R_AUX_CTRL] @ get aux_ctrl value + str r1, [r0, #L2X0_AUX_CTRL] @ restore aux_ctrl + mov r1, #0x1 + str r1, [r0, #L2X0_CTRL] @ re-enable L2 + .endm + +ENTRY(v7_cpu_resume) + bl v7_invalidate_l1 + pl310_resume + b cpu_resume +ENDPROC(v7_cpu_resume) + + .globl phys_l2x0_saved_regs +phys_l2x0_saved_regs: + .long 0 |