From f9d788d925574109ecf239a16def9450cd4c3ecd Mon Sep 17 00:00:00 2001 From: Jesse Taube Date: Wed, 9 Apr 2025 14:08:33 -0400 Subject: [PATCH] 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 Reviewed-by: Tom Rini Reviewed-by: Caleb Connolly Reviewed-by: Fabio Estevam --- Kconfig | 6 ++++++ common/board_f.c | 7 +++++++ 2 files changed, 13 insertions(+) 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 -- 2.39.5