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-rw-r--r--arch/powerpc/lib/bootm.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/powerpc/lib/bootm.c b/arch/powerpc/lib/bootm.c
index 05adada..1375474 100644
--- a/arch/powerpc/lib/bootm.c
+++ b/arch/powerpc/lib/bootm.c
@@ -226,6 +226,24 @@ static int boot_bd_t_linux(bootm_headers_t *images)
return ret;
}
+/*
+ * Verify the device tree.
+ *
+ * This function is called after all device tree fix-ups have been enacted,
+ * so that the final device tree can be verified. The definition of "verified"
+ * is up to the specific implementation. However, it generally means that the
+ * addresses of some of the devices in the device tree are compared with the
+ * actual addresses at which U-Boot has placed them.
+ *
+ * Returns 1 on success, 0 on failure. If 0 is returned, U-boot will halt the
+ * boot process.
+ */
+static int __ft_verify_fdt(void *fdt)
+{
+ return 1;
+}
+__attribute__((weak, alias("__ft_verify_fdt"))) int ft_verify_fdt(void *fdt);
+
static int boot_body_linux(bootm_headers_t *images)
{
ulong rd_len;
@@ -298,6 +316,9 @@ static int boot_body_linux(bootm_headers_t *images)
/* fixup the initrd now that we know where it should be */
if (*initrd_start && *initrd_end)
fdt_initrd(*of_flat_tree, *initrd_start, *initrd_end, 1);
+
+ if (!ft_verify_fdt(*of_flat_tree))
+ return -1;
}
#endif /* CONFIG_OF_LIBFDT */
return 0;