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boot: android: fix booting without a ramdisk

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android_image_get_ramdisk() will return an error if there is no ramdisk.
Using the android image without a ramdisk worked until commit
1ce8e10f3b ("image: Fix up ANDROID_BOOT_IMAGE ramdisk code") because
the return code wasn't checked until then. Return -ENOENT in case
there is no ramdisk and translate that into -ENOPKG in the calling
code, which will then indicate "no ramdisk" to its caller
(boot_get_ramdisk()).

This way, we can get rid of the "*rd_data = *rd_len = 0;" in the error
path, too.

With this, I'm able to boot a linux kernel using fastboot again:

  fastboot --base 0x41000000 --header-version 2 --dtb /path/to/dtb \
  --cmdline "root=/dev/mmcblk0p1 rootwait" boot path/to/Image

Signed-off-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Link: https://lore.kernel.org/r/20240729213657.2550935-1-mwalle@kernel.org
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
This commit is contained in:
Michael Walle
2024-07-29 23:36:57 +02:00
committed by Mattijs Korpershoek
parent 61faa6dd21
commit 6509c3fe1c
3 changed files with 7 additions and 6 deletions
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7
boot/image-android.c
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@@ -393,10 +393,9 @@ int android_image_get_ramdisk(const void *hdr, const void *vendor_boot_img,
if (!android_image_get_data(hdr, vendor_boot_img, &img_data))
return -EINVAL;
if (!img_data.ramdisk_size) {
*rd_data = *rd_len = 0;
return -1;
}
if (!img_data.ramdisk_size)
return -ENOENT;
if (img_data.header_version > 2) {
ramdisk_ptr = img_data.ramdisk_addr;
memcpy((void *)(ramdisk_ptr), (void *)img_data.vendor_ramdisk_ptr,