common: update: add a generic interface for FIT image
The main purpose of this patch is to separate a generic interface for
updating firmware using DFU drivers from "auto-update" via tftp.
This function will also be used in implementing UEFI capsule update
in a later commit.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/common/update.c b/common/update.c
index 8dd6ee8..808be08 100644
--- a/common/update.c
+++ b/common/update.c
@@ -29,6 +29,7 @@
#include <errno.h>
#include <mtd/cfi_flash.h>
+#ifdef CONFIG_DFU_TFTP
/* env variable holding the location of the update file */
#define UPDATE_FILE_ENV "updatefile"
@@ -98,6 +99,7 @@
return rv;
}
+#endif /* CONFIG_DFU_TFTP */
#ifdef CONFIG_MTD_NOR_FLASH
static int update_flash_protect(int prot, ulong addr_first, ulong addr_last)
@@ -231,6 +233,7 @@
return 0;
}
+#ifdef CONFIG_DFU_TFTP
int update_tftp(ulong addr, char *interface, char *devstring)
{
char *filename, *env_addr, *fit_image_name;
@@ -337,3 +340,71 @@
return ret;
}
+#endif /* CONFIG_DFU_UPDATE */
+
+#ifdef CONFIG_UPDATE_FIT
+/**
+ * fit_update - update storage with FIT image
+ * @fit: Pointer to FIT image
+ *
+ * Update firmware on storage using FIT image as input.
+ * The storage area to be update will be identified by the name
+ * in FIT and matching it to "dfu_alt_info" variable.
+ *
+ * Return: 0 - on success, non-zero - otherwise
+ */
+int fit_update(const void *fit)
+{
+ char *fit_image_name;
+ ulong update_addr, update_fladdr, update_size;
+ int images_noffset, ndepth, noffset;
+ int ret = 0;
+
+ if (!fit)
+ return -EINVAL;
+
+ if (!fit_check_format((void *)fit)) {
+ printf("Bad FIT format of the update file, aborting auto-update\n");
+ return -EINVAL;
+ }
+
+ /* process updates */
+ images_noffset = fdt_path_offset(fit, FIT_IMAGES_PATH);
+
+ ndepth = 0;
+ noffset = fdt_next_node(fit, images_noffset, &ndepth);
+ while (noffset >= 0 && ndepth > 0) {
+ if (ndepth != 1)
+ goto next_node;
+
+ fit_image_name = (char *)fit_get_name(fit, noffset, NULL);
+ printf("Processing update '%s' :", fit_image_name);
+
+ if (!fit_image_verify(fit, noffset)) {
+ printf("Error: invalid update hash, aborting\n");
+ ret = 1;
+ goto next_node;
+ }
+
+ printf("\n");
+ if (update_fit_getparams(fit, noffset, &update_addr,
+ &update_fladdr, &update_size)) {
+ printf("Error: can't get update parameters, aborting\n");
+ ret = 1;
+ goto next_node;
+ }
+
+ if (fit_image_check_type(fit, noffset, IH_TYPE_FIRMWARE)) {
+ ret = dfu_write_by_name(fit_image_name,
+ (void *)update_addr,
+ update_size, NULL, NULL);
+ if (ret)
+ return ret;
+ }
+next_node:
+ noffset = fdt_next_node(fit, noffset, &ndepth);
+ }
+
+ return ret;
+}
+#endif /* CONFIG_UPDATE_FIT */