diff options
| author | Matthias Schiffer <matthias.schiffer@ew.tq-group.com> | 2023-12-11 12:03:17 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2023-12-21 11:59:49 -0500 |
| commit | e91d6607af47131eab917b31990b3542204e396f (patch) | |
| tree | 7765da4b7befb2722a0b6a3b55594bcfd4fbe0cc /boot/image-fdt.c | |
| parent | 0d72b0f2f83b788273c40ed4a64d1adf74877726 (diff) | |
boot: add support for fdt_fixup command in environment
The "fdt" command is convenient for making small changes to the OS FDT,
especially during development. This is easy when the kernel and FDT are
loaded separately, but can be cumbersome for FIT images, requiring to
unpack the image, manually apply overlays, etc.
Add an option to execute a command "fdt_fixup" from the environment at
the beginning of image_setup_libfdt() (after overlays are applied, and
before the other fixups).
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'boot/image-fdt.c')
| -rw-r--r-- | boot/image-fdt.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/boot/image-fdt.c b/boot/image-fdt.c index 2b166c0ff9..75bdd55f32 100644 --- a/boot/image-fdt.c +++ b/boot/image-fdt.c @@ -9,6 +9,7 @@ */ #include <common.h> +#include <command.h> #include <fdt_support.h> #include <fdtdec.h> #include <env.h> @@ -576,9 +577,22 @@ int image_setup_libfdt(struct bootm_headers *images, void *blob, { ulong *initrd_start = &images->initrd_start; ulong *initrd_end = &images->initrd_end; - int ret = -EPERM; - int fdt_ret; - int of_size; + int ret, fdt_ret, of_size; + + if (IS_ENABLED(CONFIG_OF_ENV_SETUP)) { + const char *fdt_fixup; + + fdt_fixup = env_get("fdt_fixup"); + if (fdt_fixup) { + set_working_fdt_addr(map_to_sysmem(blob)); + ret = run_command_list(fdt_fixup, -1, 0); + if (ret) + printf("WARNING: fdt_fixup command returned %d\n", + ret); + } + } + + ret = -EPERM; if (fdt_root(blob) < 0) { printf("ERROR: root node setup failed\n"); |