From 81169ae64872eaa99304df70422f9c674755d0c5 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Fri, 24 Jun 2022 14:15:00 +0200 Subject: [PATCH] microblaze: Add comment about reset location 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 Link: https://lore.kernel.org/r/5ca6341b7487708247fe2948d7e496ea6f7c2e02.1655299267.git.michal.simek@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 db3998f545..9aa5fd0993 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 -- 2.39.5