On some boards, the bloblist is created in SPL once SDRAM is ready. It
cannot be accessed until that point, so is not available early in SPL.
Add a condition to avoid a hang in this case.
This fixes a hang in chromebook_coral
Fixes: 70fe2385943 ("fdt: Allow the devicetree to come from a bloblist")
Signed-off-by: Simon Glass <s...@chromium.org>
Acked-by: Raymond Mao <raymond....@linaro.org>
---
Changes in v7:
- Reword the comment
Changes in v3:
- Use BLOBLIST instead of OF_BLOBLIST
Changes in v2:
- Use 'phase' instead of 'stage'
lib/fdtdec.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/lib/fdtdec.c b/lib/fdtdec.c
index 5b3b26df968..6865f78c70d 100644
--- a/lib/fdtdec.c
+++ b/lib/fdtdec.c
@@ -1668,8 +1668,16 @@ int fdtdec_setup(void)
{
int ret = -ENOENT;
- /* If allowing a bloblist, check that first */
- if (CONFIG_IS_ENABLED(BLOBLIST)) {
+ /*
+ * If allowing a bloblist, check that first. There was discussion about
+ * adding an OF_BLOBLIST Kconfig, but this was rejected.
+ *
+ * The necessary test is whether the previous phase passed a bloblist,
+ * not whether this phase creates one.
+ */
+ if (CONFIG_IS_ENABLED(BLOBLIST) &&
+ (spl_prev_phase() != PHASE_TPL ||
+ !IS_ENABLED(CONFIG_TPL_BLOBLIST))) {
ret = bloblist_maybe_init();
if (!ret) {
gd->fdt_blob = bloblist_find(BLOBLISTT_CONTROL_FDT, 0);
--
2.34.1
