diff options
| author | Marek Vasut <[email protected]> | 2025-11-19 18:43:53 +0100 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2025-12-27 09:40:35 -0600 |
| commit | 9235da9446e5e896a06e1555251d11717277a893 (patch) | |
| tree | 188f067ee58f02dacd81bfe95ae65d3a984956ee /boot | |
| parent | 48e56ac26dd925984d599ce06cb769dabb1251d6 (diff) | |
boot: Warn users about fdt_high=~0 usage
In case the 'fdt_high' environment variable is set to ~0, warn users
about the dangers of the fdt_high usage. This will hopefully lead to
removal of most of the fdt_high ~0 usage over time.
Signed-off-by: Marek Vasut <[email protected]>
Reviewed-by: Tom Rini <[email protected]>
Reviewed-by: Ilias Apalodimas <[email protected]>
Diffstat (limited to 'boot')
| -rw-r--r-- | boot/image-fdt.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/boot/image-fdt.c b/boot/image-fdt.c index 3f0ac54f76f..a3a4fb8b558 100644 --- a/boot/image-fdt.c +++ b/boot/image-fdt.c @@ -189,6 +189,12 @@ int boot_relocate_fdt(char **of_flat_tree, ulong *of_size) /* All ones means use fdt in place */ of_start = fdt_blob; addr = map_to_sysmem(fdt_blob); + printf("WARNING:\n" + "The 'fdt_high' environment variable is set to ~0. This is known to cause\n" + "boot failures due to placement of DT at non-8-byte-aligned addresses.\n" + "This system will likely fail to boot. Unset the 'fdt_high' environment\n" + "variable and submit a fix upstream.\n"); + err = lmb_alloc_mem(LMB_MEM_ALLOC_ADDR, 0, &addr, of_len, LMB_NONE); if (err) { |