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| author | Fabio Estevam <festevam@gmail.com> | 2019-09-17 22:04:57 -0300 |
|---|---|---|
| committer | Otavio Salvador <otavio@ossystems.com.br> | 2019-09-20 11:45:46 -0300 |
| commit | 2dd8f58da73d4292870f486ecd798ea464f8cb23 (patch) | |
| tree | bfbf6cbcd55cb4b9da97b00061f146635cd7c59a | |
| parent | 01ddcf4cd21ce8019b5ebf11a4fda66bbf3e793e (diff) | |
| download | u-boot-2dd8f58da73d4292870f486ecd798ea464f8cb23.tar.gz | |
pico-imx6: Add Falcon mode
Add Falcon mode support, which allows the SPL to load and
jump to the Linux kernel directly, without the need of loading
U-Boot proper.
CONFIG_SPL_OS_BOOT=y needs to be passed in the defconfig
in order to use Falcon mode.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
| -rw-r--r-- | board/technexion/pico-imx6/spl.c | 11 | ||||
| -rw-r--r-- | include/configs/pico-imx6.h | 12 |
2 files changed, 23 insertions, 0 deletions
diff --git a/board/technexion/pico-imx6/spl.c b/board/technexion/pico-imx6/spl.c index 5bf87023ac..06ad0a8c32 100644 --- a/board/technexion/pico-imx6/spl.c +++ b/board/technexion/pico-imx6/spl.c @@ -27,6 +27,17 @@ #define IMX6DQ_DRIVE_STRENGTH 0x30 #define IMX6SDL_DRIVE_STRENGTH 0x28 +#ifdef CONFIG_SPL_OS_BOOT +int spl_start_uboot(void) +{ + /* Break into full U-Boot on 'c' */ + if (serial_tstc() && serial_getc() == 'c') + return 1; + + return 0; +} +#endif + /* configure MX6Q/DUAL mmdc DDR io registers */ static struct mx6dq_iomux_ddr_regs mx6dq_ddr_ioregs = { .dram_sdclk_0 = IMX6DQ_DRIVE_STRENGTH, diff --git a/include/configs/pico-imx6.h b/include/configs/pico-imx6.h index 467d5ff4f5..5bbb9ea8f7 100644 --- a/include/configs/pico-imx6.h +++ b/include/configs/pico-imx6.h @@ -12,6 +12,18 @@ #include "imx6_spl.h" +#ifdef CONFIG_SPL_OS_BOOT +/* Falcon Mode */ +#define CONFIG_SPL_FS_LOAD_ARGS_NAME "args" +#define CONFIG_SPL_FS_LOAD_KERNEL_NAME "uImage" +#define CONFIG_SYS_SPL_ARGS_ADDR 0x18000000 + +/* Falcon Mode - MMC support: args@1MB kernel@2MB */ +#define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR 0x800 /* 1MB */ +#define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS (CONFIG_CMD_SPL_WRITE_SIZE / 512) +#define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR 0x1000 /* 2MB */ +#endif + /* Size of malloc() pool */ #define CONFIG_SYS_MALLOC_LEN (35 * SZ_1M) /* Increase due to DFU */ |