diff options
| author | Prashant Gaikwad <pgaikwad@nvidia.com> | 2012-03-27 16:18:58 +0530 |
|---|---|---|
| committer | Dan Willemsen <dwillemsen@nvidia.com> | 2012-03-27 13:11:05 -0700 |
| commit | c20d70e8acb37f50314c355a108906449b3f0775 (patch) | |
| tree | 097f7ce346c993fa0a0e37ba544393082757e78a /arch/arm | |
| parent | ded5b840dc4f24ed51d779024a87fba36a33b073 (diff) | |
ARM: tegra20: pm: clean L1 data before wfi
Change-Id: If68afc483a3b322e9a97b64c3f8cba67447a914f
Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-tegra/sleep-t2.S | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/arch/arm/mach-tegra/sleep-t2.S b/arch/arm/mach-tegra/sleep-t2.S index 79534964e718..d3951b1fa691 100644 --- a/arch/arm/mach-tegra/sleep-t2.S +++ b/arch/arm/mach-tegra/sleep-t2.S @@ -190,13 +190,22 @@ ENTRY(tegra2_sleep_core_finish) ENDPROC(tegra2_sleep_core_finish) /* - * tegra3_sleep_cpu_secondary_finish(unsigned long v2p) + * tegra2_sleep_cpu_secondary_finish(unsigned long v2p) * - * Enters WFI on secondary CPU by exiting coherency and saving CPU state. + * Enters WFI on secondary CPU by exiting coherency. */ ENTRY(tegra2_finish_sleep_cpu_secondary) - mov r6, lr @ save address of cpu_suspend_abort mrc p15, 0, r11, c1, c0, 1 @ save actlr before exiting coherency + + dsb +#ifdef MULTI_CACHE + mov32 r10, cpu_cache + mov lr, pc + ldr pc, [r10, #CACHE_FLUSH_KERN_ALL] +#else + bl __cpuc_flush_kern_all +#endif + bl tegra_cpu_exit_coherency mov32 r0, TEGRA_PMC_VIRT + PMC_SCRATCH41 @@ -227,8 +236,8 @@ ENTRY(tegra2_finish_sleep_cpu_secondary) /* Invalidate the TLBs & BTAC */ mov r1, #0 - mcr p15, 0, r1, c8, c3, 0 @ invalidate shared TLBs - mcr p15, 0, r1, c7, c1, 6 @ invalidate shared BTAC + mcr p15, 0, r1, c8, c3, 0 @ invalidate shared TLBs + mcr p15, 0, r1, c7, c1, 6 @ invalidate shared BTAC dsb isb @@ -240,7 +249,11 @@ ENTRY(tegra2_finish_sleep_cpu_secondary) #else bl __cpuc_flush_kern_all #endif - mov pc, r6 + + ldmia sp!, {r1 - r3} @ pop phys pgd, virt SP, phys resume fn + mov r0, #0 @ return success + mov sp, r2 @ sp is stored in r2 by __cpu_suspend + ldmfd sp!, {r4 - r11, pc} ENDPROC(tegra2_finish_sleep_cpu_secondary) /* |