[PATCH 17/29] rockchip: Add a template for SPL

[Simon Glass]

The SPL phase has a single SPL binary plus a devicetree for each board
we need to support.

The devicetree is run through fdtgrep to remove unwanted nodes and
properties and reduce its size.

While it would be nicer to just have a single FIT holding both the SPL
and U-Boot images, there may not be enough SRAM to support that. So we
end up providing this special image just for SPL.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 arch/arm/dts/rockchip-u-boot.dtsi | 43 +++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/arch/arm/dts/rockchip-u-boot.dtsi b/arch/arm/dts/rockchip-u-boot.dtsi
index 6871260574d..c87d17db00e 100644
--- a/arch/arm/dts/rockchip-u-boot.dtsi
+++ b/arch/arm/dts/rockchip-u-boot.dtsi
@@ -204,6 +204,49 @@
 			};
 		};
 	};
+
+	spl_template: template-2 {
+		type = "fit";
+		description = "FIT image for U-Boot SPL";
+		#address-cells = <1>;
+		fit,fdt-list = "of-list";
+		fit,align = <512>;
+		fit,external-offset = <0>;
+		images {
+			spl {
+				description = "U-Boot SPL";
+				type = "firmware";
+				os = "u-boot";
+				arch = ARCH;
+				compression = "lz4";
+				load = <CONFIG_SPL_TEXT_BASE>;
+				entry = <CONFIG_SPL_TEXT_BASE>;
+				section {
+					compress = "lz4";
+					u-boot-spl-nodtb {
+					};
+					u-boot-spl-bss-pad {
+					};
+				};
+			};
+			@fdt-SEQ {
+				description = "fdt-NAME";
+				compression = "none";
+				type = "flat_dt";
+				fit,fdt-phase = "spl";
+			};
+		};
+		configurations {
+			default = "@config-DEFAULT-SEQ";
+			@config-SEQ {
+				description = "NAME.dtb";
+				fdt = "fdt-SEQ";
+				fit,firmware = "spl";
+				fit,loadables;
+				fit,compatible;
+			};
+		};
+	};
 #endif /* HAS_FIT */
 
 	simple-bin {
-- 
2.43.0