This patch adds "iRAM, CPU state and low power" configs which are the addresses acting as flag registers.
iROM code checks CONFIG_LOWPOWER_FLAG address. If it is equal to CONFIG_LOWPOWER_EN then it jumps to the address (0x02020000+CPUID*4). This is a part of iROM logic. Rest other flags are being used at various places during kernel switching and reset. They are nowhere documented because they are part programming. These configs are serving as flags for us because they are representing the addresses in iRAM which we are using for storing and extracting CPU Status and GIC status.
Signed-off-by: Akshay Saraswat akshay.s@samsung.com Reviewed-by: Simon Glass sjg@chromium.org Tested-by: Simon Glass sjg@chromium.org --- Changes since v3: - No change.
Changes since v2: - No change.
Changes since v1: - Added Reviewed-by & Tested-by. - Removed unnecessary CONFIGS.
include/configs/exynos5420-common.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/include/configs/exynos5420-common.h b/include/configs/exynos5420-common.h index fe72bd0..b42dab7 100644 --- a/include/configs/exynos5420-common.h +++ b/include/configs/exynos5420-common.h @@ -38,4 +38,20 @@
#define CONFIG_BOARD_REV_GPIO_COUNT 2
+#define CONFIG_PHY_IRAM_BASE 0x02020000 + +/* Address for relocating helper code (Last 4 KB of IRAM) */ +#define CONFIG_EXYNOS_RELOCATE_CODE_BASE (CONFIG_IRAM_TOP - 0x1000) + +/* + * Low Power settings + */ +#define CONFIG_LOWPOWER_FLAG 0x02020028 +#define CONFIG_LOWPOWER_ADDR 0x0202002C + +/* + * Number of CPUs available + */ +#define CONFIG_CORE_COUNT 0x8 + #endif /* __CONFIG_EXYNOS5420_H */