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OMAP3: twister: add support to boot Linux from SPL 

Signed-off-by: Stefano Babic <sbabic@denx.de>
CC: Tom Rini <tom.rini@gmail.com>
CC: Wolfgang Denk <wd@denx.de>
CC: Simon Schwarz <simonschwarzcor@gmail.com>
This commit is contained in:
Stefano Babic 2012-03-15 04:01:44 +00:00 committed by Albert ARIBAUD
parent 53c4492c0b
commit 84c21fb16f
2 changed files with 35 additions and 0 deletions
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23
board/technexion/twister/twister.c
View File

@ -136,3 +136,26 @@ int board_mmc_init(bd_t *bis)
return omap_mmc_init(0);
}
#endif
#ifdef CONFIG_SPL_OS_BOOT
/*
* Do board specific preperation before SPL
* Linux boot
*/
void spl_board_prepare_for_linux(void)
{
/* init cs for extern lan */
enable_gpmc_cs_config(gpmc_smc911, &gpmc_cfg->cs[5],
CONFIG_SMC911X_BASE, GPMC_SIZE_16M);
}
int spl_start_uboot(void)
{
int val = 0;
if (!gpio_request(CONFIG_SPL_OS_BOOT_KEY, "U-Boot key")) {
gpio_direction_input(CONFIG_SPL_OS_BOOT_KEY);
val = gpio_get_value(CONFIG_SPL_OS_BOOT_KEY);
gpio_free(CONFIG_SPL_OS_BOOT_KEY);
}
return val;
}
#endif

12
include/configs/twister.h
View File

@ -51,4 +51,16 @@
#define CONFIG_EXTRA_ENV_SETTINGS CONFIG_TAM3517_SETTINGS \
"bootcmd=run nandboot\0"
/* SPL OS boot options */
#define CONFIG_CMD_SPL
#define CONFIG_CMD_SPL_WRITE_SIZE 0x400 /* 1024 byte */
#define CONFIG_SYS_NAND_SPL_KERNEL_OFFS 0x00200000
#define CONFIG_CMD_SPL_NAND_OFS (CONFIG_SYS_NAND_SPL_KERNEL_OFFS+\
0x600000)
#define CONFIG_SPL_OS_BOOT
#define CONFIG_SPL_OS_BOOT_KEY 55
#define CONFIG_SYS_SPL_ARGS_ADDR (PHYS_SDRAM_1 + 0x100)
#define CONFIG_SPL_BOARD_INIT
#endif /* __CONFIG_H */