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| author | Dima Zavin <dima@android.com> | 2012-04-04 09:27:37 -0700 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2012-04-04 09:27:37 -0700 |
| commit | 6aa51068f58022ca616fad40b6773a1de50599f0 (patch) | |
| tree | f824b50ddbf8d4d072f558e9930eaa8df9de3ea5 /arch/arm | |
| parent | fd9abe1b5beafe776c51507dac32486f627c6ad8 (diff) | |
| download | linux-stable-6aa51068f58022ca616fad40b6773a1de50599f0.tar.gz linux-stable-6aa51068f58022ca616fad40b6773a1de50599f0.tar.bz2 linux-stable-6aa51068f58022ca616fad40b6773a1de50599f0.zip | |
ARM: EXYNOS: use chip_id reg in uncompress to select uart base phys
Signed-off-by: Dima Zavin <dima@android.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-exynos/include/mach/uncompress.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/arch/arm/mach-exynos/include/mach/uncompress.h b/arch/arm/mach-exynos/include/mach/uncompress.h index 493f4f365ddf..2979995d5a6a 100644 --- a/arch/arm/mach-exynos/include/mach/uncompress.h +++ b/arch/arm/mach-exynos/include/mach/uncompress.h @@ -20,9 +20,24 @@ volatile u8 *uart_base; #include <plat/uncompress.h> +static unsigned int __raw_readl(unsigned int ptr) +{ + return *((volatile unsigned int *)ptr); +} + static void arch_detect_cpu(void) { - if (machine_is_smdk5250()) + u32 chip_id = __raw_readl(EXYNOS_PA_CHIPID); + + /* + * product_id is bits 31:12 + * bits 23:20 describe the exynosX family + * + */ + chip_id >>= 20; + chip_id &= 0xf; + + if (chip_id == 0x5) uart_base = (volatile u8 *)EXYNOS5_PA_UART + (S3C_UART_OFFSET * CONFIG_S3C_LOWLEVEL_UART_PORT); else uart_base = (volatile u8 *)EXYNOS4_PA_UART + (S3C_UART_OFFSET * CONFIG_S3C_LOWLEVEL_UART_PORT); |