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| author | Arnd Bergmann <arnd@arndb.de> | 2020-08-06 21:20:31 +0300 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzk@kernel.org> | 2020-08-19 22:10:50 +0300 |
| commit | edaff7e1c6f5f433acc8b957c95434de98ba18ea (patch) | |
| tree | a75e5244293722ae0124044ff8b4d3e0a16e4b1b /arch/arm/mach-exynos/exynos.c | |
| parent | b3a775127d3326ab651cfc23042f7bbb533846fb (diff) | |
| download | linux-edaff7e1c6f5f433acc8b957c95434de98ba18ea.tar.xz | |
ARM: exynos: use private samsung_cpu_id copy
The only part of plat-samsung that is shared with arch-exynos
is the CPU identification code.
Having a separate exynos_cpu_id variable makes the two completely
independent and is actually a bit less code in total.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20200806182059.2431-14-krzk@kernel.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Diffstat (limited to 'arch/arm/mach-exynos/exynos.c')
| -rw-r--r-- | arch/arm/mach-exynos/exynos.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c index 36c37444485a..3503274e5875 100644 --- a/arch/arm/mach-exynos/exynos.c +++ b/arch/arm/mach-exynos/exynos.c @@ -19,11 +19,12 @@ #include <asm/mach/arch.h> #include <asm/mach/map.h> -#include <mach/map.h> -#include <plat/cpu.h> - #include "common.h" +#define S3C_ADDR_BASE 0xF6000000 +#define S3C_ADDR(x) ((void __iomem __force *)S3C_ADDR_BASE + (x)) +#define S5P_VA_CHIPID S3C_ADDR(0x02000000) + static struct platform_device exynos_cpuidle = { .name = "exynos_cpuidle", #ifdef CONFIG_ARM_EXYNOS_CPUIDLE @@ -36,6 +37,14 @@ void __iomem *sysram_base_addr __ro_after_init; phys_addr_t sysram_base_phys __ro_after_init; void __iomem *sysram_ns_base_addr __ro_after_init; +unsigned long exynos_cpu_id; +static unsigned int exynos_cpu_rev; + +unsigned int exynos_rev(void) +{ + return exynos_cpu_rev; +} + void __init exynos_sysram_init(void) { struct device_node *node; @@ -86,7 +95,11 @@ static void __init exynos_init_io(void) of_scan_flat_dt(exynos_fdt_map_chipid, NULL); /* detect cpu id and rev. */ - s5p_init_cpu(S5P_VA_CHIPID); + exynos_cpu_id = readl_relaxed(S5P_VA_CHIPID); + exynos_cpu_rev = exynos_cpu_id & 0xFF; + + pr_info("Samsung CPU ID: 0x%08lx\n", exynos_cpu_id); + } /* |