#include <libflash/file.h>
#include <libflash/ecc.h>
+#define SECURE_BOOT_HEADERS_SIZE 4096
+#define ROM_MAGIC_NUMBER 0x17082011
struct flash_info {
/* Device information */
rc = ffs_init(0, info->size, info->bl, &info->ffs, 1);
if (rc) {
- pb_log("%s: Failed to init ffs\n", __func__);
+ pb_log_fn("Failed to init ffs\n");
goto out_flash;
}
return NULL;
}
+/* See stb_is_container() in Skiboot */
+static bool is_signed(char *buffer, uint32_t len)
+{
+ if (!buffer || len <= SECURE_BOOT_HEADERS_SIZE)
+ return false;
+ if (be32_to_cpu(*(uint32_t *)buffer) != ROM_MAGIC_NUMBER)
+ return false;
+ return true;
+}
+
int flash_parse_version(void *ctx, char ***versions, bool current)
{
char *saveptr, *tok, **tmp, *buffer;
len = cur_info->attr_data_len - ecc_size(cur_info->attr_data_len);
buffer = talloc_array(cur_info, char, len);
if (!buffer) {
- pb_log("%s: Failed to init buffer!\n", __func__);
+ pb_log_fn("Failed to init buffer!\n");
goto out;
}
goto out;
}
+ /* Check if this partition is signed */
+ if (is_signed(buffer, len))
+ buffer += SECURE_BOOT_HEADERS_SIZE;
+
/* open-power-platform */
tok = strtok_r(buffer, delim, &saveptr);
if (tok) {
tmp = talloc_realloc(ctx, tmp, char *, n + 1);
if (!tmp) {
- pb_log("%s: Failed to allocate memory\n", __func__);
+ pb_log_fn("Failed to allocate memory\n");
goto out;
}
tmp[n++] = talloc_strdup(ctx, tok);
/* Ignore leading tab from subsequent lines */
tmp = talloc_realloc(ctx, tmp, char *, n + 1);
if (!tmp) {
- pb_log("%s: Failed to reallocate memory\n", __func__);
+ pb_log_fn("Failed to reallocate memory\n");
n = 0;
goto out;
}