[PATCH 3/5] rockchip: rk3568: add boot device detection

[Chris Morgan <macroalpha82@gmail.com>]

From: Chris Morgan <macromorgan@hotmail.com>

Enable spl to detect which device it was booted from.

Adapted from Peter Geis's work located here:
https://gitlab.com/pgwipeout/u-boot-quartz64/-/commit/3a10fb6bfbbaa747b425233b1fc08cd008084281

Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
---
 arch/arm/mach-rockchip/rk3568/rk3568.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm/mach-rockchip/rk3568/rk3568.c b/arch/arm/mach-rockchip/rk3568/rk3568.c
index 22eeb77d41..a2d59abc26 100644
--- a/arch/arm/mach-rockchip/rk3568/rk3568.c
+++ b/arch/arm/mach-rockchip/rk3568/rk3568.c
@@ -7,6 +7,7 @@
 #include <dm.h>
 #include <asm/armv8/mmu.h>
 #include <asm/io.h>
+#include <asm/arch-rockchip/bootrom.h>
 #include <asm/arch-rockchip/grf_rk3568.h>
 #include <asm/arch-rockchip/hardware.h>
 #include <dt-bindings/clock/rk3568-cru.h>
@@ -70,6 +71,12 @@ static struct mm_region rk3568_mem_map[] = {
 	}
 };
 
+const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
+	[BROM_BOOTSOURCE_EMMC] = "/sdhci@fe310000",
+	[BROM_BOOTSOURCE_SPINOR] = "/spi@fe300000/flash@0",
+	[BROM_BOOTSOURCE_SD] = "/mmc@fe2b0000",
+};
+
 struct mm_region *mem_map = rk3568_mem_map;
 
 void board_debug_uart_init(void)
-- 
2.34.1