From 93c76075802dba9bed40d20cfe1e4351c7bed4e5 Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Thu, 2 May 2019 10:52:19 -0600
Subject: [PATCH] x86: Update device tree for TPL

Add TPL binaries to the device x86 binman desciption. When enabled, TPL
will start first, doing the 16-bit init, then jump to SPL and finally
U-Boot proper.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
---
 arch/x86/dts/u-boot.dtsi | 34 ++++++++++++++++++++++++++++++++--
 1 file changed, 32 insertions(+), 2 deletions(-)

diff --git a/arch/x86/dts/u-boot.dtsi b/arch/x86/dts/u-boot.dtsi
index 1050236..9cf7338 100644
--- a/arch/x86/dts/u-boot.dtsi
+++ b/arch/x86/dts/u-boot.dtsi
@@ -22,7 +22,21 @@
 			filename = CONFIG_INTEL_ME_FILE;
 		};
 #endif
-#ifdef CONFIG_SPL
+#ifdef CONFIG_TPL
+		u-boot-tpl-with-ucode-ptr {
+			offset = <CONFIG_TPL_TEXT_BASE>;
+		};
+		u-boot-tpl-dtb {
+		};
+		u-boot-spl {
+			offset = <CONFIG_SPL_TEXT_BASE>;
+		};
+		u-boot-spl-dtb {
+		};
+		u-boot {
+			offset = <CONFIG_SYS_TEXT_BASE>;
+		};
+#elif defined(CONFIG_SPL)
 		u-boot-spl-with-ucode-ptr {
 			offset = <CONFIG_SPL_TEXT_BASE>;
 		};
@@ -31,7 +45,19 @@
 			type = "u-boot-dtb-with-ucode";
 		};
 		u-boot {
+		/*
+		 * TODO(sjg@chromium.org):
+		 * Normally we use CONFIG_SYS_TEXT_BASE as the flash offset. But
+		 * for boards with textbase in SDRAM we cannot do this. Just use
+		 * an assumed-valid value (1MB before the end of flash) here so
+		 * that we can actually build an image for coreboot, etc.
+		 * We need a better solution, perhaps a separate Kconfig.
+		 */
+#if CONFIG_SYS_TEXT_BASE == 0x1110000
 			offset = <0xfff00000>;
+#else
+			offset = <CONFIG_SYS_TEXT_BASE>;
+#endif
 		};
 #else
 		u-boot-with-ucode-ptr {
@@ -77,7 +103,11 @@
 			offset = <CONFIG_X86_REFCODE_ADDR>;
 		};
 #endif
-#ifdef CONFIG_SPL
+#ifdef CONFIG_TPL
+		x86-start16-tpl {
+			offset = <CONFIG_SYS_X86_START16>;
+		};
+#elif defined(CONFIG_SPL)
 		x86-start16-spl {
 			offset = <CONFIG_SYS_X86_START16>;
 		};
-- 
2.7.4