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* [PATCH] riscv: Fix arch_fixup_fdt always failing without /chosen
@ 2021-05-08 16:12 Sean Anderson
  2021-05-08 16:22 ` Bin Meng
                   ` (2 more replies)
  0 siblings, 3 replies; 6+ messages in thread
From: Sean Anderson @ 2021-05-08 16:12 UTC (permalink / raw)
  To: u-boot

If /chosen was missing, chosen_offset would never get updated with the new
/chosen node. This would cause fdt_setprop_u32 to fail. This patch fixes
this by setting chosen_offset. In addition, log any errors from setting
boot-hartid as well.

Fixes: 177c53fe6c6 ("riscv: Move all fdt fixups together")
Signed-off-by: Sean Anderson <seanga2@gmail.com>
---
I have not actually tested this (nor observed the original failure). But this
seemed buggy from inspection.

 arch/riscv/lib/fdt_fixup.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/arch/riscv/lib/fdt_fixup.c b/arch/riscv/lib/fdt_fixup.c
index 1f3f23621c..f636b28449 100644
--- a/arch/riscv/lib/fdt_fixup.c
+++ b/arch/riscv/lib/fdt_fixup.c
@@ -151,14 +151,17 @@ int arch_fixup_fdt(void *blob)
 	}
 	chosen_offset = fdt_path_offset(blob, "/chosen");
 	if (chosen_offset < 0) {
-		err = fdt_add_subnode(blob, 0, "chosen");
-		if (err < 0) {
+		chosen_offset = fdt_add_subnode(blob, 0, "chosen");
+		if (chosen_offset < 0) {
 			log_err("chosen node cannot be added\n");
-			return err;
+			return chosen_offset;
 		}
 	}
 	/* Overwrite the boot-hartid as U-Boot is the last stage BL */
-	fdt_setprop_u32(blob, chosen_offset, "boot-hartid", gd->arch.boot_hart);
+	err = fdt_setprop_u32(blob, chosen_offset, "boot-hartid",
+			      gd->arch.boot_hart);
+	if (err < 0)
+		return log_msg_ret("could not set boot-hartid", err);
 #endif
 
 	/* Copy the reserved-memory node to the DT used by OS */
-- 
2.31.0

^ permalink raw reply related	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2021-05-14 19:13 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-05-08 16:12 [PATCH] riscv: Fix arch_fixup_fdt always failing without /chosen Sean Anderson
2021-05-08 16:22 ` Bin Meng
2021-05-08 16:24   ` Sean Anderson
2021-05-13 12:11     ` Bin Meng
2021-05-10  2:01 ` Rick Chen
2021-05-14 19:13 ` Atish Patra

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