diff options
| author | Simon Glass | 2023-07-26 21:01:24 -0600 |
|---|---|---|
| committer | Tom Rini | 2023-08-03 15:30:54 -0400 |
| commit | 2984d21a28f812c9c1fd2243cc72796f69a61585 (patch) | |
| tree | 73d60bf0b8a09427b05c4b6df6edc5e81036e3fb /boot/bootmeth_efi.c | |
| parent | 6a8c2f9781cede2a7cb2b95ee6310cd53b1c20e2 (diff) | |
bootstd: Init the size before reading the devicetree
The implementation in distro_efi_try_bootflow_files() does not pass a
valid size to bootmeth_common_read_file(), so this can fail if the
uninted value happens to be too small.
Fix this.
This was reported by someone but I cannot now find the email.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'boot/bootmeth_efi.c')
| -rw-r--r-- | boot/bootmeth_efi.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/boot/bootmeth_efi.c b/boot/bootmeth_efi.c index bceec0d12ef..1c9f2b1e2fe 100644 --- a/boot/bootmeth_efi.c +++ b/boot/bootmeth_efi.c @@ -21,6 +21,7 @@ #include <mmc.h> #include <net.h> #include <pxe_utils.h> +#include <linux/sizes.h> #define EFI_DIRNAME "efi/boot/" @@ -281,9 +282,12 @@ static int distro_efi_try_bootflow_files(struct udevice *dev, ret = distro_efi_get_fdt_name(fname, sizeof(fname), seq); if (ret == -EALREADY) bflow->flags = BOOTFLOWF_USE_PRIOR_FDT; - if (!ret) + if (!ret) { + /* Limit FDT files to 4MB */ + size = SZ_4M; ret = bootmeth_common_read_file(dev, bflow, fname, fdt_addr, &size); + } } if (*fname) { |