package/boot/uboot-mediatek/patches/001-mtk-0023-spl-nand-support-loading-legacy-image-with-payload-c.patch

   1 From b4e5137067d34a099efd921532ece177560789ca Mon Sep 17 00:00:00 2001
   2 From: Weijie Gao <weijie.gao@mediatek.com>
   3 Date: Fri, 20 May 2022 11:24:04 +0800
   4 Subject: [PATCH 23/25] spl: nand: support loading legacy image with payload
   5  compressed
   6
   7 Add support to load legacy image with payload compressed. This redirects
   8 the boot flow for all legacy images. If the payload is not compressed, the
   9 actual behavior will remain unchanged.
  10
  11 Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
  12 Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
  13 ---
  14  common/spl/spl_nand.c | 27 +++++++++++++++++++++++++++
  15  1 file changed, 27 insertions(+)
  16
  17 --- a/common/spl/spl_nand.c
  18 +++ b/common/spl/spl_nand.c
  19 @@ -56,6 +56,21 @@ static ulong spl_nand_fit_read(struct sp
  20         return size / load->bl_len;
  21  }
  22
  23 +static ulong spl_nand_legacy_read(struct spl_load_info *load, ulong offs,
  24 +                                 ulong size, void *dst)
  25 +{
  26 +       int err;
  27 +
  28 +       debug("%s: offs %lx, size %lx, dst %p\n",
  29 +             __func__, offs, size, dst);
  30 +
  31 +       err = nand_spl_load_image(offs, size, dst);
  32 +       if (err)
  33 +               return 0;
  34 +
  35 +       return size;
  36 +}
  37 +
  38  struct mtd_info * __weak nand_get_mtd(void)
  39  {
  40         return NULL;
  41 @@ -93,6 +108,18 @@ static int spl_nand_load_element(struct
  42                 load.bl_len = bl_len;
  43                 load.read = spl_nand_fit_read;
  44                 return spl_load_imx_container(spl_image, &load, offset / bl_len);
  45 +       } else if (IS_ENABLED(CONFIG_SPL_LEGACY_IMAGE_FORMAT) &&
  46 +                  image_get_magic(header) == IH_MAGIC) {
  47 +               struct spl_load_info load;
  48 +
  49 +               debug("Found legacy image\n");
  50 +               load.dev = NULL;
  51 +               load.priv = NULL;
  52 +               load.filename = NULL;
  53 +               load.bl_len = 1;
  54 +               load.read = spl_nand_legacy_read;
  55 +
  56 +               return spl_load_legacy_img(spl_image, bootdev, &load, offset);
  57         } else {
  58                 err = spl_parse_image_header(spl_image, bootdev, header);
  59                 if (err)