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rockchip: rk3399: inject 'u-boot, spl-boot-device' for next-stage

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This implements the new 'spl_perform_fixups' hook for RK3399-based
boards and injects the /chosen/u-boot,spl-boot-device with an ofpath
corresponding to the boot device used.

The intended usage is for the full U-Boot stage to evaluate this in
scripts and then adapt its boot-order when using distro-boot.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Tested-by: Klaus Goger <klaus.goger@theobroma-systems.com>
This commit is contained in:
Philipp Tomsich 2018-05-24 17:15:52 +02:00
parent 2aa4abc1bd
commit e5f2ecc750
1 changed files with 48 additions and 0 deletions
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48
arch/arm/mach-rockchip/rk3399-board-spl.c
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@ -57,6 +57,54 @@ u32 spl_boot_device(void)
return boot_device;
}
const char *spl_decode_boot_device(u32 boot_device)
{
int i;
static const struct {
u32 boot_device;
const char *ofpath;
} spl_boot_devices_tbl[] = {
{ BOOT_DEVICE_MMC1, "/dwmmc@fe320000" },
{ BOOT_DEVICE_MMC2, "/sdhci@fe330000" },
{ BOOT_DEVICE_SPI, "/spi@ff1d0000" },
};
for (i = 0; i < ARRAY_SIZE(spl_boot_devices_tbl); ++i)
if (spl_boot_devices_tbl[i].boot_device == boot_device)
return spl_boot_devices_tbl[i].ofpath;
return NULL;
}
void spl_perform_fixups(struct spl_image_info *spl_image)
{
void *blob = spl_image->fdt_addr;
const char *boot_ofpath;
int chosen;
/*
* Inject the ofpath of the device the full U-Boot (or Linux in
* Falcon-mode) was booted from into the FDT, if a FDT has been
* loaded at the same time.
*/
if (!blob)
return;
boot_ofpath = spl_decode_boot_device(spl_image->boot_device);
if (!boot_ofpath) {
pr_err("%s: could not map boot_device to ofpath\n", __func__);
return;
}
chosen = fdt_find_or_add_subnode(blob, 0, "chosen");
if (chosen < 0) {
pr_err("%s: could not find/create '/chosen'\n", __func__);
return;
}
fdt_setprop_string(blob, chosen,
"u-boot,spl-boot-device", boot_ofpath);
}
#define TIMER_CHN10_BASE 0xff8680a0
#define TIMER_END_COUNT_L 0x00
#define TIMER_END_COUNT_H 0x04