diff options
| author | Vikas Manocha <vikas.manocha@st.com> | 2017-05-28 12:55:10 -0700 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-06-09 11:23:55 -0400 |
| commit | b97476965bf292c13074e01de4bd39253de0ef66 (patch) | |
| tree | 98e31a42d754e9fa65073f335fd3f4f6a0845d04 /board/st/stm32f746-disco | |
| parent | ea744fca0e36e085947ad32358da60377d1966b6 (diff) | |
stm32: stm32f7: add spl build support
This commit supports booting from stm32 internal nor flash. spl U-Boot
initializes the sdram memory, copies next image (e.g. standard U-Boot)
to sdram & then jumps to entry point.
Here are the flash memory addresses for U-Boot-spl & standard U-Boot:
- spl U-Boot : 0x0800_0000
- standard U-Boot : 0x0800_8000
To compile u-boot without spl: Remove SUPPORT_SPL configuration
(arch/arm/mach-stm32/Kconfig)
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
[trini: Rework Kconfig logic a bit]
Signed-off-by: Tom Rini <trini@konsulko.com>
Diffstat (limited to 'board/st/stm32f746-disco')
| -rw-r--r-- | board/st/stm32f746-disco/stm32f746-disco.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/board/st/stm32f746-disco/stm32f746-disco.c b/board/st/stm32f746-disco/stm32f746-disco.c index 7a6d93cb67..87fa5eb48e 100644 --- a/board/st/stm32f746-disco/stm32f746-disco.c +++ b/board/st/stm32f746-disco/stm32f746-disco.c @@ -8,6 +8,7 @@ #include <common.h> #include <dm.h> #include <ram.h> +#include <spl.h> #include <asm/io.h> #include <asm/armv7m.h> #include <asm/arch/stm32.h> @@ -36,16 +37,18 @@ int get_memory_base_size(fdt_addr_t *mr_base, fdt_addr_t *mr_size) } int dram_init(void) { - struct udevice *dev; int rv; fdt_addr_t mr_base, mr_size; +#ifndef CONFIG_SUPPORT_SPL + struct udevice *dev; rv = uclass_get_device(UCLASS_RAM, 0, &dev); if (rv) { debug("DRAM init failed: %d\n", rv); return rv; } +#endif rv = get_memory_base_size(&mr_base, &mr_size); if (rv) return rv; @@ -87,6 +90,28 @@ int board_early_init_f(void) } #endif +#ifdef CONFIG_SPL_BUILD +int spl_dram_init(void) +{ + struct udevice *dev; + int rv; + rv = uclass_get_device(UCLASS_RAM, 0, &dev); + if (rv) + debug("DRAM init failed: %d\n", rv); + return rv; +} +void spl_board_init(void) +{ + spl_dram_init(); + preloader_console_init(); + arch_cpu_init(); /* to configure mpu for sdram rw permissions */ +} +u32 spl_boot_device(void) +{ + return BOOT_DEVICE_NOR; +} + +#endif u32 get_board_rev(void) { return 0; |