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spl: add FIT support to semihosting boot method

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Allow loading a FIT image via semihosting in SPL.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
This commit is contained in:
Heinrich Schuchardt
2023-07-22 21:27:48 +02:00
committed by Tom Rini
parent 8ee830d898
commit 688d62bfc8
1 changed files with 31 additions and 0 deletions
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31
common/spl/spl_semihosting.c
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@@ -21,6 +21,23 @@ static int smh_read_full(long fd, void *memp, size_t len)
return 0;
}
static ulong smh_fit_read(struct spl_load_info *load, ulong file_offset,
ulong size, void *buf)
{
long fd;
ulong ret;
fd = smh_open(load->filename, MODE_READ | MODE_BINARY);
if (fd < 0) {
log_debug("could not open %s: %ld\n", load->filename, fd);
return 0;
}
ret = smh_read(fd, buf, size);
smh_close(fd);
return ret;
}
static int spl_smh_load_image(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev)
{
@@ -49,6 +66,20 @@ static int spl_smh_load_image(struct spl_image_info *spl_image,
goto out;
}
if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
image_get_magic(header) == FDT_MAGIC) {
struct spl_load_info load;
debug("Found FIT\n");
load.read = smh_fit_read;
load.bl_len = 1;
load.filename = filename;
load.priv = NULL;
smh_close(fd);
return spl_load_simple_fit(spl_image, &load, 0, header);
}
ret = spl_parse_image_header(spl_image, bootdev, header);
if (ret) {
log_debug("failed to parse image header: %d\n", ret);