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.bossman...@gmail.com>
Reviewed-by: Tom Rini <tr...@konsulko.com>
Reviewed-by: Caleb Connolly <caleb.conno...@linaro.org>
---
V1 -> V2:
- Drop "default n"
- s/ram/RAM/g
---
Kconfig | 6 ++++++
common/board_f.c | 7 +++++++
2 files changed, 13 insertions(+)
diff --git a/Kconfig b/Kconfig
index 6379a454166..1b35ddc36a3 100644
--- a/Kconfig
+++ b/Kconfig
@@ -443,6 +443,12 @@ 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 99616fdac80..d51696b8eda 100644
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -476,6 +476,13 @@ 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
--
2.49.0
