From: Jesse Taube <mr.bossman075@gmail.com>
Date: Wed, 9 Apr 2025 18:08:33 +0000 (-0400)
Subject: common: Add CONFIG_SKIP_RELOCATE
X-Git-Tag: v2025.07-rc1~61
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f9d788d925574109ecf239a16def9450cd4c3ecd;p=pandora-u-boot.git

common: Add CONFIG_SKIP_RELOCATE

Add a check for CONFIG_SKIP_RELOCATE in reserve_uboot to skip the
relocation of the U-Boot image.
CONFIG_SKIP_RELOCATE skips relocation of U-Boot to the end of RAM
allowing for systems that have extremely limited RAM to run U-Boot.

Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
---

diff --git a/Kconfig b/Kconfig
index a508c5430f0..51358633762 100644
--- a/Kconfig
+++ b/Kconfig
@@ -454,6 +454,12 @@ config TOOLS_DEBUG
 	  it is possible to set breakpoints on particular lines, single-step
 	  debug through the source code, etc.
 
+config SKIP_RELOCATE
+	bool "Skips relocation of U-Boot to end of RAM"
+	help
+	  Skips relocation of U-Boot allowing for systems that have extremely
+	  limited RAM to run U-Boot.
+
 endif # EXPERT
 
 config PHYS_64BIT
diff --git a/common/board_f.c b/common/board_f.c
index e4e17dd717e..bff465d9cb2 100644
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -477,6 +477,13 @@ static int reserve_trace(void)
 
 static int reserve_uboot(void)
 {
+	/*
+	 * This should be the first place GD_FLG_SKIP_RELOC is read from.
+	 * Set GD_FLG_SKIP_RELOC flag if CONFIG_SKIP_RELOCATE is enabled.
+	 */
+	if (CONFIG_IS_ENABLED(SKIP_RELOCATE))
+		gd->flags |= GD_FLG_SKIP_RELOC;
+
 	if (!(gd->flags & GD_FLG_SKIP_RELOC)) {
 		/*
 		 * reserve memory for U-Boot code, data & bss