[PATCH 16/22] microblaze: Add comment about reset location
Michal Simek
monstr at monstr.eu
Thu Jun 2 15:57:40 CEST 2022
Better to add comment to explain why reset vector points all the time to
origin U-Boot location.
If reset happens U-Boot should start from it's origin location.
Signed-off-by: Michal Simek <michal.simek at amd.com>
---
arch/microblaze/cpu/start.S | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/microblaze/cpu/start.S b/arch/microblaze/cpu/start.S
index db3998f54505..9aa5fd099361 100644
--- a/arch/microblaze/cpu/start.S
+++ b/arch/microblaze/cpu/start.S
@@ -144,6 +144,7 @@ __setup_exceptions:
swi r3, r4, 0x4 /* reset address - brai opcode */
addik r6, r0, _start
+ /* Intentionally keep reset vector back to origin u-boot location */
sw r6, r1, r0
lhu r7, r1, r10
rsubi r8, r10, 0x2
--
2.36.0
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