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.toms...@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;
--
2.1.4
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