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 ---
Changes in v2: None
arch/x86/lib/mrccache.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/arch/x86/lib/mrccache.c b/arch/x86/lib/mrccache.c index f37a732a45c..be107627b80 100644 --- a/arch/x86/lib/mrccache.c +++ b/arch/x86/lib/mrccache.c @@ -113,8 +113,10 @@ int mrccache_update(struct udevice *sf, struct mrc_region *entry, 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 @@ int mrccache_get_region(struct udevice **devp, struct mrc_region *entry) 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];