[PATCH v3 15/31] 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>
---

Changes in v3:
- Move template to the vpl file

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

diff --git a/arch/arm/dts/rockchip-vpl-u-boot.dtsi b/arch/arm/dts/rockchip-vpl-u-boot.dtsi
index b3759b88db5..d15c593bf7f 100644
--- a/arch/arm/dts/rockchip-vpl-u-boot.dtsi
+++ b/arch/arm/dts/rockchip-vpl-u-boot.dtsi
@@ -66,4 +66,47 @@
 			};
 		};
 	};
+
+	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;
+			};
+		};
+	};
 };
-- 
2.43.0