[PATCH v2 3/4] spl: Support loading a FIT from ext FS
Mayuresh Chitale
mchitale at ventanamicro.com
Tue May 2 18:19:01 CEST 2023
Detect a FIT when loading from an ext File system and handle it using
the FIT SPL support.
Signed-off-by: Mayuresh Chitale <mchitale at ventanamicro.com>
---
common/spl/spl_ext.c | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/common/spl/spl_ext.c b/common/spl/spl_ext.c
index 2bf3434439..8593aed069 100644
--- a/common/spl/spl_ext.c
+++ b/common/spl/spl_ext.c
@@ -8,6 +8,26 @@
#include <ext4fs.h>
#include <errno.h>
#include <image.h>
+#include <linux/libfdt.h>
+
+static ulong spl_fit_read(struct spl_load_info *load, ulong file_offset,
+ ulong size, void *buf)
+{
+ loff_t filelen = (loff_t)load->priv, actlen;
+ char *filename = (char *)load->filename;
+ int ret;
+
+ ret = ext4fs_read(buf, file_offset, filelen, &actlen);
+ if (ret < 0) {
+ if (IS_ENABLED(CONFIG_SPL_LIBCOMMON_SUPPORT)) {
+ printf("%s: error reading image %s, err - %d\n",
+ __func__, filename, ret);
+ }
+ return ret;
+ }
+
+ return actlen;
+}
int spl_load_image_ext(struct spl_image_info *spl_image,
struct spl_boot_device *bootdev,
@@ -47,6 +67,19 @@ int spl_load_image_ext(struct spl_image_info *spl_image,
goto end;
}
+ if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
+ image_get_magic(header) == FDT_MAGIC) {
+ struct spl_load_info load;
+
+ debug("Found FIT\n");
+ load.read = spl_fit_read;
+ load.bl_len = 1;
+ load.filename = (void *)filename;
+ load.priv = (void *)filelen;
+
+ return spl_load_simple_fit(spl_image, &load, 0, header);
+ }
+
err = spl_parse_image_header(spl_image, bootdev, header);
if (err < 0) {
puts("spl: ext: failed to parse image header\n");
--
2.34.1
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