Add new Kconfig option to disable arch_fixup_fdt() calls for cases where
U-Boot shouldn't update memory setup in DTB file.
One example of usage of this option is to boot OS with different memory
setup than U-Boot use.
Signed-off-by: Michal Simek <michal.si...@xilinx.com>
---
Changes in v3:
- Fix MIPS macro
Changes in v2:
- Change logic to be possitive - sjg
Kconfig | 9 +++++++++
arch/arm/lib/bootm-fdt.c | 2 ++
arch/arm/lib/bootm.c | 2 ++
arch/mips/lib/bootm.c | 2 ++
common/image-fdt.c | 7 ++-----
5 files changed, 17 insertions(+), 5 deletions(-)
diff --git a/Kconfig b/Kconfig
index ef12f9fbee40..626e82f88dfe 100644
--- a/Kconfig
+++ b/Kconfig
@@ -342,6 +342,15 @@ config SYS_CLK_FREQ
help
TODO: Move CONFIG_SYS_CLK_FREQ for all the architecture
+config ARCH_FIXUP_FDT
+ bool "Enable arch_fixup_fdt() call"
+ depends on ARM || MIPS
+ default y
+ help
+ Enable FDT memory map syncup before OS boot. This feature can be
+ used for booting OS with different memory setup where the part of
+ the memory location should be used for different purpose.
+
endmenu # Boot images
source "common/Kconfig"
diff --git a/arch/arm/lib/bootm-fdt.c b/arch/arm/lib/bootm-fdt.c
index 4481f9e2fa9c..a51755070bc9 100644
--- a/arch/arm/lib/bootm-fdt.c
+++ b/arch/arm/lib/bootm-fdt.c
@@ -25,6 +25,7 @@
DECLARE_GLOBAL_DATA_PTR;
+#ifdef CONFIG_ARCH_FIXUP_FDT
int arch_fixup_fdt(void *blob)
{
bd_t *bd = gd->bd;
@@ -60,3 +61,4 @@ int arch_fixup_fdt(void *blob)
return 0;
}
+#endif
diff --git a/arch/arm/lib/bootm.c b/arch/arm/lib/bootm.c
index c20ef227fb4e..f9ed7fe38ab8 100644
--- a/arch/arm/lib/bootm.c
+++ b/arch/arm/lib/bootm.c
@@ -367,8 +367,10 @@ void boot_prep_vxworks(bootm_headers_t *images)
if (images->ft_addr) {
off = fdt_path_offset(images->ft_addr, "/memory");
if (off < 0) {
+#ifdef CONFIG_ARCH_FIXUP_FDT
if (arch_fixup_fdt(images->ft_addr))
puts("## WARNING: fixup memory failed!\n");
+#endif
}
}
#endif
diff --git a/arch/mips/lib/bootm.c b/arch/mips/lib/bootm.c
index aa0475a4954e..0c6a4ab3b329 100644
--- a/arch/mips/lib/bootm.c
+++ b/arch/mips/lib/bootm.c
@@ -253,6 +253,7 @@ static int boot_reloc_fdt(bootm_headers_t *images)
#endif
}
+#ifdef CONFIG_ARCH_FIXUP_FDT
int arch_fixup_fdt(void *blob)
{
#if CONFIG_IS_ENABLED(MIPS_BOOT_FDT) && CONFIG_IS_ENABLED(OF_LIBFDT)
@@ -264,6 +265,7 @@ int arch_fixup_fdt(void *blob)
return 0;
#endif
}
+#endif
static int boot_setup_fdt(bootm_headers_t *images)
{
diff --git a/common/image-fdt.c b/common/image-fdt.c
index 6cac7dbb7f8b..d6ee225d409e 100644
--- a/common/image-fdt.c
+++ b/common/image-fdt.c
@@ -458,11 +458,6 @@ __weak int ft_verify_fdt(void *fdt)
return 1;
}
-__weak int arch_fixup_fdt(void *blob)
-{
- return 0;
-}
-
int image_setup_libfdt(bootm_headers_t *images, void *blob,
int of_size, struct lmb *lmb)
{
@@ -479,10 +474,12 @@ int image_setup_libfdt(bootm_headers_t *images, void
*blob,
printf("ERROR: /chosen node create failed\n");
goto err;
}
+#ifdef CONFIG_ARCH_FIXUP_FDT
if (arch_fixup_fdt(blob) < 0) {
printf("ERROR: arch-specific fdt fixup failed\n");
goto err;
}
+#endif
if (IMAGE_OF_BOARD_SETUP) {
fdt_ret = ft_board_setup(blob, gd->bd);
if (fdt_ret) {
--
1.9.1
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