ARM: EXYNOS: use chip_id reg in uncompress to select uart base phys (6aa51068) · Commits · e / devices / android_kernel_teracube_emerald

arch/arm/mach-exynos/include/mach/uncompress.h

+16 −1

Original line number	Diff line number	Diff line
		@@ -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);