[RFC PATCH 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
- u-boot-rockchip-sdmmc.bin
    - [TPL + ] SPL all rksd-formatted + u-boot.itb padded for SD/MMC
      usage.
- 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?

---
 arch/arm/dts/rockchip-u-boot.dtsi | 59 +++++++++++++++++++++++++++----
 arch/arm/mach-rockchip/Kconfig    |  7 ++--
 2 files changed, 56 insertions(+), 10 deletions(-)

diff --git a/arch/arm/dts/rockchip-u-boot.dtsi b/arch/arm/dts/rockchip-u-boot.dtsi
index eae3ee715d..05d79e6c55 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 {
-		filename = "u-boot-rockchip.bin";
-		pad-byte = <0xff>;
+    sdmmc-idbloader {
+		filename = "idbloader.img";
 
-		blob {
-			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-sdmmc.bin";
+		pad-byte = <0xff>;
+
+        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
-- 
2.35.3