diff options
| author | Jagan Teki | 2020-07-15 15:38:58 +0530 |
|---|---|---|
| committer | Andes | 2020-07-24 14:55:19 +0800 |
| commit | 868e295ef72535300037fc264e770cfdca3f5894 (patch) | |
| tree | f59535b698a31da5cd80c5e6ec1ef81eaccaf81a /board | |
| parent | 3d5ac3536be97a679763e261c55167bfd356a412 (diff) | |
sifive: fu540: Add runtime boot mode detection
Add support to detect boot mode at runtime for
SiFive FU540 boards.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Bin Meng <bin.meng@windriver.com>
Tested-by: Bin Meng <bin.meng@windriver.com>
Diffstat (limited to 'board')
| -rw-r--r-- | board/sifive/fu540/fu540.c | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/board/sifive/fu540/fu540.c b/board/sifive/fu540/fu540.c index 27ff52f9035..57753ba50ba 100644 --- a/board/sifive/fu540/fu540.c +++ b/board/sifive/fu540/fu540.c @@ -10,6 +10,7 @@ #include <env.h> #include <init.h> #include <log.h> +#include <linux/bitops.h> #include <linux/bug.h> #include <linux/delay.h> #include <linux/io.h> @@ -128,14 +129,26 @@ int board_init(void) } #ifdef CONFIG_SPL +#define MODE_SELECT_REG 0x1000 +#define MODE_SELECT_QSPI 0x6 +#define MODE_SELECT_SD 0xb +#define MODE_SELECT_MASK GENMASK(3, 0) + u32 spl_boot_device(void) { -#ifdef CONFIG_SPL_MMC_SUPPORT - return BOOT_DEVICE_MMC1; -#else - puts("Unknown boot device\n"); - hang(); -#endif + u32 mode_select = readl((void *)MODE_SELECT_REG); + u32 boot_device = mode_select & MODE_SELECT_MASK; + + switch (boot_device) { + case MODE_SELECT_QSPI: + return BOOT_DEVICE_SPI; + case MODE_SELECT_SD: + return BOOT_DEVICE_MMC1; + default: + debug("Unsupported boot device 0x%x but trying MMC1\n", + boot_device); + return BOOT_DEVICE_MMC1; + } } #endif |