From f3a88e2ca17ac1ff54f5eff67c96cdaa5c542f6a Mon Sep 17 00:00:00 2001 From: Baruch Siach <baruch@tkos.co.il> Date: Sun, 24 Sep 2017 15:50:17 +0300 Subject: [PATCH] arm: mvebu: fix boot from UART on ClearFog Base The ClearFog Base boot from UART when setting the DIP switches to 01001. Unfortunately, the SPL code sometimes fails to detect the UART boot method at run-time. Add an alternative SAR UART boot value to fix this. Note that this alternative value is not documented (Armada 38x Hardware Specifications, Table 48). But experimentations showed it on the ClearFog Base. Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Stefan Roese <sr@denx.de> --- arch/arm/mach-mvebu/include/mach/soc.h | 1 + arch/arm/mach-mvebu/spl.c | 3 +++ 2 files changed, 4 insertions(+) diff --git a/arch/arm/mach-mvebu/include/mach/soc.h b/arch/arm/mach-mvebu/include/mach/soc.h index cdd64fb285..1d302761f0 100644 --- a/arch/arm/mach-mvebu/include/mach/soc.h +++ b/arch/arm/mach-mvebu/include/mach/soc.h @@ -142,6 +142,7 @@ #define BOOT_DEV_SEL_MASK (0x3f << BOOT_DEV_SEL_OFFS) #define BOOT_FROM_UART 0x28 +#define BOOT_FROM_UART_ALT 0x3f #define BOOT_FROM_SPI 0x32 #define BOOT_FROM_MMC 0x30 #define BOOT_FROM_MMC_ALT 0x31 diff --git a/arch/arm/mach-mvebu/spl.c b/arch/arm/mach-mvebu/spl.c index 3cf02a54ce..a72a769f7c 100644 --- a/arch/arm/mach-mvebu/spl.c +++ b/arch/arm/mach-mvebu/spl.c @@ -42,6 +42,9 @@ static u32 get_boot_device(void) return BOOT_DEVICE_MMC1; #endif case BOOT_FROM_UART: +#ifdef BOOT_FROM_UART_ALT + case BOOT_FROM_UART_ALT: +#endif return BOOT_DEVICE_UART; case BOOT_FROM_SPI: default: -- 2.39.5