diff options
Diffstat (limited to 'arch/arm/mach-exynos/suspend.c')
| -rw-r--r-- | arch/arm/mach-exynos/suspend.c | 34 |
1 files changed, 24 insertions, 10 deletions
diff --git a/arch/arm/mach-exynos/suspend.c b/arch/arm/mach-exynos/suspend.c index 7ead3acd6fa4..bb8e3985acdb 100644 --- a/arch/arm/mach-exynos/suspend.c +++ b/arch/arm/mach-exynos/suspend.c @@ -59,10 +59,15 @@ struct exynos_pm_data { int (*cpu_suspend)(unsigned long); }; -static const struct exynos_pm_data *pm_data __ro_after_init; +/* Used only on Exynos542x/5800 */ +struct exynos_pm_state { + int cpu_state; + unsigned int pmu_spare3; + void __iomem *sysram_base; +}; -static int exynos5420_cpu_state; -static unsigned int exynos_pmu_spare3; +static const struct exynos_pm_data *pm_data __ro_after_init; +static struct exynos_pm_state pm_state; /* * GIC wake-up support @@ -257,7 +262,7 @@ static int exynos5420_cpu_suspend(unsigned long arg) unsigned int cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1); unsigned int cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0); - writel_relaxed(0x0, sysram_base_addr + EXYNOS5420_CPU_STATE); + writel_relaxed(0x0, pm_state.sysram_base + EXYNOS5420_CPU_STATE); if (IS_ENABLED(CONFIG_EXYNOS5420_MCPM)) { mcpm_set_entry_vector(cpu, cluster, exynos_cpu_resume); @@ -321,7 +326,7 @@ static void exynos5420_pm_prepare(void) /* Set wake-up mask registers */ exynos_pm_set_wakeup_mask(); - exynos_pmu_spare3 = pmu_raw_readl(S5P_PMU_SPARE3); + pm_state.pmu_spare3 = pmu_raw_readl(S5P_PMU_SPARE3); /* * The cpu state needs to be saved and restored so that the * secondary CPUs will enter low power start. Though the U-Boot @@ -329,8 +334,8 @@ static void exynos5420_pm_prepare(void) * needs to restore it back in case, the primary cpu fails to * suspend for any reason. */ - exynos5420_cpu_state = readl_relaxed(sysram_base_addr + - EXYNOS5420_CPU_STATE); + pm_state.cpu_state = readl_relaxed(pm_state.sysram_base + + EXYNOS5420_CPU_STATE); exynos_pm_enter_sleep_mode(); @@ -448,8 +453,8 @@ static void exynos5420_pm_resume(void) EXYNOS5_ARM_CORE0_SYS_PWR_REG); /* Restore the sysram cpu state register */ - writel_relaxed(exynos5420_cpu_state, - sysram_base_addr + EXYNOS5420_CPU_STATE); + writel_relaxed(pm_state.cpu_state, + pm_state.sysram_base + EXYNOS5420_CPU_STATE); pmu_raw_writel(EXYNOS5420_USE_STANDBY_WFI_ALL, S5P_CENTRAL_SEQ_OPTION); @@ -457,7 +462,7 @@ static void exynos5420_pm_resume(void) if (exynos_pm_central_resume()) goto early_wakeup; - pmu_raw_writel(exynos_pmu_spare3, S5P_PMU_SPARE3); + pmu_raw_writel(pm_state.pmu_spare3, S5P_PMU_SPARE3); early_wakeup: @@ -654,4 +659,13 @@ void __init exynos_pm_init(void) register_syscore_ops(&exynos_pm_syscore_ops); suspend_set_ops(&exynos_suspend_ops); + + /* + * Applicable as of now only to Exynos542x. If booted under secure + * firmware, the non-secure region of sysram should be used. + */ + if (exynos_secure_firmware_available()) + pm_state.sysram_base = sysram_ns_base_addr; + else + pm_state.sysram_base = sysram_base_addr; } |