From e5f2ecc75001e40a698e56299869ec2bda941c44 Mon Sep 17 00:00:00 2001 From: Philipp Tomsich Date: Thu, 24 May 2018 17:15:52 +0200 Subject: [PATCH] rockchip: rk3399: inject 'u-boot, spl-boot-device' for next-stage 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 Tested-by: Klaus Goger --- arch/arm/mach-rockchip/rk3399-board-spl.c | 48 +++++++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) diff --git a/arch/arm/mach-rockchip/rk3399-board-spl.c b/arch/arm/mach-rockchip/rk3399-board-spl.c index d4e9a16..9b5dc41 100644 --- a/arch/arm/mach-rockchip/rk3399-board-spl.c +++ b/arch/arm/mach-rockchip/rk3399-board-spl.c @@ -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