x86: mrccache: Add more debugging
When the MRC cache fails to save it is useful to have some debugging info
to indicate what when wrong. Add some more debug() calls.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/arch/x86/lib/mrccache.c b/arch/x86/lib/mrccache.c
index f37a732..be10762 100644
--- a/arch/x86/lib/mrccache.c
+++ b/arch/x86/lib/mrccache.c
@@ -113,8 +113,10 @@
ulong base_addr;
int ret;
- if (!is_mrc_cache(cur))
+ if (!is_mrc_cache(cur)) {
+ debug("%s: Cache data not valid\n", __func__);
return -EINVAL;
+ }
/* Find the last used block */
base_addr = entry->base + entry->offset;
@@ -205,17 +207,23 @@
return -ENOENT;
}
- if (fdtdec_get_int_array(blob, node, "memory-map", reg, 2))
+ if (fdtdec_get_int_array(blob, node, "memory-map", reg, 2)) {
+ debug("%s: Cannot find memory map\n", __func__);
return -EINVAL;
+ }
entry->base = reg[0];
/* Find the place where we put the MRC cache */
mrc_node = fdt_subnode_offset(blob, node, "rw-mrc-cache");
- if (mrc_node < 0)
+ if (mrc_node < 0) {
+ debug("%s: Cannot find node\n", __func__);
return -EPERM;
+ }
- if (fdtdec_get_int_array(blob, mrc_node, "reg", reg, 2))
+ if (fdtdec_get_int_array(blob, mrc_node, "reg", reg, 2)) {
+ debug("%s: Cannot find address\n", __func__);
return -EINVAL;
+ }
entry->offset = reg[0];
entry->length = reg[1];