[RFC PATCH v2 2/8] rockchip: Add binman definitions for final images

[Andrew Abbott <andrew@mirx.dev>]

Currently, building for Rockchip targets produces:

- idbloader.img
    - rksd-formatted TPL with SPL appended; or
    - rksd-formatted SPL
- u-boot.itb
    - U-Boot Proper FIT image
- u-boot-rockchip.bin
    - idbloader.img + u-boot.itb, padded the correct amount for SD/MMC
      usage.

For RK3399 targets:

- u-boot.rom
    - SPI image specific to the bob Chromebook target (see
      c4cea2bbf995764f325a907061c22ecd6768cf7b).

This commit adds binman definitions to produce these images:

- idbloader.img
    - rksd-formatted [TPL + ] SPL, as before.
- u-boot-rockchip.bin
    - [TPL + ] SPL all rksd-formatted + u-boot.itb padded for SD/MMC
      usage, as before.
- u-boot-rockchip-spi.bin
    - [TPL + ] SPL all rkspi-formatted + u-boot.itb padded for SPI
      usage.

This commit also generalizes the CONFIG_ROCKCHIP_SPI_IMAGE config
setting - it now means to generate a generic SPI flash image, in
addition to the generic SD/MMC image.

Signed-off-by: Andrew Abbott <andrew@mirx.dev>
---
Question: Does this break/not play nicely with rockchip-optee
generation? It creates u-boot.itb for rk3288 targets. That would need to
run before what I've implemented here?

Changes in v2:
- Revert u-boot-rockchip-sdmmc.bin name to u-boot-rockchip.bin, to
  keep the name the same as before.
- Fix whitespace issues.

 arch/arm/dts/rockchip-u-boot.dtsi | 53 +++++++++++++++++++++++++++++--
 arch/arm/mach-rockchip/Kconfig    |  7 ++--
 2 files changed, 53 insertions(+), 7 deletions(-)

diff --git a/arch/arm/dts/rockchip-u-boot.dtsi b/arch/arm/dts/rockchip-u-boot.dtsi
index eae3ee715d..9354b0f5a7 100644
--- a/arch/arm/dts/rockchip-u-boot.dtsi
+++ b/arch/arm/dts/rockchip-u-boot.dtsi
@@ -13,17 +13,64 @@
 
 #ifdef CONFIG_SPL
 &binman {
-	simple-bin {
+	sdmmc-idbloader {
+		filename = "idbloader.img";
+
+		mkimage {
+			args = "-n", CONFIG_SYS_SOC, "-T", "rksd";
+
+#ifdef CONFIG_TPL
+			u-boot-tpl {};
+#endif
+			u-boot-spl {};
+		};
+	};
+
+	sdmmc-image {
 		filename = "u-boot-rockchip.bin";
 		pad-byte = <0xff>;
 
-		blob {
+		idbloader {
 			filename = "idbloader.img";
+			type = "blob";
 		};
 
-		u-boot-img {
+#ifdef CONFIG_ARM64
+		u-boot-fit {
+			filename = "u-boot.itb";
+			type = "blob";
 			offset = <CONFIG_SPL_PAD_TO>;
 		};
+#else
+		u-boot-img {};
+#endif
 	};
 };
+
+#ifdef CONFIG_ROCKCHIP_SPI_IMAGE
+&binman {
+	spi-image {
+		filename = "u-boot-rockchip-spi.bin";
+		pad-byte = <0xff>;
+
+		mkimage {
+			args = "-n", CONFIG_SYS_SOC, "-T", "rkspi";
+
+#ifdef CONFIG_TPL
+			u-boot-tpl {};
+#endif
+			u-boot-spl {};
+		};
+
+#ifdef CONFIG_ARM64
+		blob {
+			filename = "u-boot.itb";
+			offset = <CONFIG_SYS_SPI_U_BOOT_OFFS>;
+		};
+#else
+		u-boot-img {};
 #endif
+	};
+};
+#endif // CONFIG_ROCKCHIP_SPI_IMAGE
+#endif // CONFIG_SPL
diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig
index 18aff5480b..7149b9a530 100644
--- a/arch/arm/mach-rockchip/Kconfig
+++ b/arch/arm/mach-rockchip/Kconfig
@@ -415,12 +415,11 @@ config SPL_MMC
 
 config ROCKCHIP_SPI_IMAGE
 	bool "Build a SPI image for rockchip"
-	depends on HAS_ROM
 	help
 	  Some Rockchip SoCs support booting from SPI flash. Enable this
-	  option to produce a 4MB SPI-flash image (called u-boot.rom)
-	  containing U-Boot. The image is built by binman. U-Boot sits near
-	  the start of the image.
+	  option to produce an SPI-flash image (called u-boot-rockchip-spi.bin)
+	  containing TPL (if enabled) and SPL, and U-Boot proper at the offset
+	  CONFIG_SYS_SPI_U_BOOT_OFFS. The image is built by binman.
 
 config LNX_KRNL_IMG_TEXT_OFFSET_BASE
 	default SYS_TEXT_BASE
-- 
2.36.0