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rockchip: spl: rk3399: implement chip-specific board_spl_was_booted_from() 

To support the new "same-as-spl" specifier in the boot-order on the
RK3399, this implements the chip-specific mapping from the information
obtainable from the BROM to a OF path name.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Philipp Tomsich 2017-09-29 19:27:58 +02:00
parent 80e9f88e67
commit c55addd360
1 changed files with 24 additions and 0 deletions
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24
arch/arm/mach-rockchip/rk3399-board-spl.c
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@ -26,6 +26,30 @@ void board_return_to_bootrom(void)
back_to_bootrom();
}
static const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
[BROM_BOOTSOURCE_EMMC] = "/sdhci@fe330000",
[BROM_BOOTSOURCE_SPINOR] = "/spi@ff1d0000",
[BROM_BOOTSOURCE_SD] = "/dwmmc@fe320000",
};
const char *board_spl_was_booted_from(void)
{
u32 bootdevice_brom_id = readl(RK3399_BROM_BOOTSOURCE_ID_ADDR);
const char *bootdevice_ofpath = NULL;
if (bootdevice_brom_id < ARRAY_SIZE(boot_devices))
bootdevice_ofpath = boot_devices[bootdevice_brom_id];
if (bootdevice_ofpath)
debug("%s: brom_bootdevice_id %x maps to '%s'\n",
__func__, bootdevice_brom_id, bootdevice_ofpath);
else
debug("%s: failed to resolve brom_bootdevice_id %x\n",
__func__, bootdevice_brom_id);
return bootdevice_ofpath;
}
u32 spl_boot_device(void)
{
u32 boot_device = BOOT_DEVICE_MMC1;