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 ---
arch/arm/mach-rockchip/rk3399-board-spl.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+)
diff --git a/arch/arm/mach-rockchip/rk3399-board-spl.c b/arch/arm/mach-rockchip/rk3399-board-spl.c index 8e38ef1..9c20f56 100644 --- a/arch/arm/mach-rockchip/rk3399-board-spl.c +++ b/arch/arm/mach-rockchip/rk3399-board-spl.c @@ -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;