[PATCH 13/15] rockchip: rk3328: Add support to build bootable SPI image

[Jonas Karlman]

Similar to RK35xx the BootRom in RK3328 can read all data and look for
idbloader at 0x8000, same as on SD and eMMC.

Use the rksd format and modify the mkimage offset to generate a bootable
u-boot-rockchip-spi.bin that can be written to 0x0 of SPI NOR flash.

Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
---
 arch/arm/dts/rk3328-u-boot.dtsi        | 11 +++++++++++
 arch/arm/mach-rockchip/rk3328/rk3328.c |  1 +
 2 files changed, 12 insertions(+)

diff --git a/arch/arm/dts/rk3328-u-boot.dtsi b/arch/arm/dts/rk3328-u-boot.dtsi
index b90d78878d77..2a5dca97dd4b 100644
--- a/arch/arm/dts/rk3328-u-boot.dtsi
+++ b/arch/arm/dts/rk3328-u-boot.dtsi
@@ -120,3 +120,14 @@
 &usb20_otg {
 	hnp-srp-disable;
 };
+
+#ifdef CONFIG_ROCKCHIP_SPI_IMAGE
+&binman {
+	simple-bin-spi {
+		mkimage {
+			args = "-n", CONFIG_SYS_SOC, "-T", "rksd";
+			offset = <0x8000>;
+		};
+	};
+};
+#endif
diff --git a/arch/arm/mach-rockchip/rk3328/rk3328.c b/arch/arm/mach-rockchip/rk3328/rk3328.c
index b591d38fe412..b82b209de9e2 100644
--- a/arch/arm/mach-rockchip/rk3328/rk3328.c
+++ b/arch/arm/mach-rockchip/rk3328/rk3328.c
@@ -36,6 +36,7 @@
 
 const char * const boot_devices[BROM_LAST_BOOTSOURCE + 1] = {
 	[BROM_BOOTSOURCE_EMMC] = "/mmc at ff520000",
+	[BROM_BOOTSOURCE_SPINOR] = "/spi at ff190000/flash at 0",
 	[BROM_BOOTSOURCE_SD] = "/mmc at ff500000",
 };
 
-- 
2.43.0