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| author | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2015-03-18 16:09:56 +0300 |
|---|---|---|
| committer | Kukjin Kim <kgene@kernel.org> | 2015-06-05 20:17:56 +0300 |
| commit | 1225ad72866b440574a22372b9edceb035632f2b (patch) | |
| tree | 603a16be4a7cefb476435b7b49d8c913f8e2718d /arch/arm/mach-exynos/firmware.c | |
| parent | 955d4cf82fcbda67ff141eebc560a3dc5a77d7ed (diff) | |
| download | linux-1225ad72866b440574a22372b9edceb035632f2b.tar.xz | |
ARM: EXYNOS: add exynos_get_boot_addr() helper
Add get_cpu_boot_addr() firmware operation and then
exynos_get_boot_addr() helper.
This is a preparation for adding coupled cpuidle support
for Exynos3250 SoC.
There should be no functional changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>
Diffstat (limited to 'arch/arm/mach-exynos/firmware.c')
| -rw-r--r-- | arch/arm/mach-exynos/firmware.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/mach-exynos/firmware.c b/arch/arm/mach-exynos/firmware.c index 1bd35763f12e..b30562daf696 100644 --- a/arch/arm/mach-exynos/firmware.c +++ b/arch/arm/mach-exynos/firmware.c @@ -104,6 +104,22 @@ static int exynos_set_cpu_boot_addr(int cpu, unsigned long boot_addr) return 0; } +static int exynos_get_cpu_boot_addr(int cpu, unsigned long *boot_addr) +{ + void __iomem *boot_reg; + + if (!sysram_ns_base_addr) + return -ENODEV; + + boot_reg = sysram_ns_base_addr + 0x1c; + + if (soc_is_exynos4412()) + boot_reg += 4 * cpu; + + *boot_addr = __raw_readl(boot_reg); + return 0; +} + static int exynos_cpu_suspend(unsigned long arg) { flush_cache_all(); @@ -138,6 +154,7 @@ static int exynos_resume(void) static const struct firmware_ops exynos_firmware_ops = { .do_idle = IS_ENABLED(CONFIG_EXYNOS_CPU_SUSPEND) ? exynos_do_idle : NULL, .set_cpu_boot_addr = exynos_set_cpu_boot_addr, + .get_cpu_boot_addr = exynos_get_cpu_boot_addr, .cpu_boot = exynos_cpu_boot, .suspend = IS_ENABLED(CONFIG_PM_SLEEP) ? exynos_suspend : NULL, .resume = IS_ENABLED(CONFIG_EXYNOS_CPU_SUSPEND) ? exynos_resume : NULL, |