From: Quentin Schulz quentin.schulz@theobroma-systems.com
It is possible to boot U-Boot proper from a different storage medium than the one used by the BOOTROM to load the SPL. This information is stored in the u-boot,spl-boot-device Device Tree property and is accessible from U-Boot proper so that it has knowledge at runtime where it was loaded from.
Let's add support for this feature for rk3588 the same way it was done for px30 and rk3399.
Cc: Quentin Schulz foss+uboot@0leil.net Signed-off-by: Quentin Schulz quentin.schulz@theobroma-systems.com --- arch/arm/mach-rockchip/rk3588/rk3588.c | 50 ++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+)
diff --git a/arch/arm/mach-rockchip/rk3588/rk3588.c b/arch/arm/mach-rockchip/rk3588/rk3588.c index 18e67b5ca9b..694177e3976 100644 --- a/arch/arm/mach-rockchip/rk3588/rk3588.c +++ b/arch/arm/mach-rockchip/rk3588/rk3588.c @@ -162,3 +162,53 @@ int arch_cpu_init(void) return 0; } #endif + +#if defined(CONFIG_SPL_BUILD) && !defined(CONFIG_TPL_BUILD) +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_MMC2, "/mmc@fe2e0000" }, + { BOOT_DEVICE_MMC1, "/mmc@fe2c0000" }, + { BOOT_DEVICE_SPI, "/spi@fe2b0000/flash@0" }, + }; + + 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); +} +#endif
--- base-commit: 6735ab59e6fd71ced1c58d8dfb3dd6baf3690d16 change-id: 20230502-rk3588-spl-boot-dev-efa2777cc21b
Best regards,