From: Michal Simek Date: Fri, 24 Jun 2022 12:15:00 +0000 (+0200) Subject: microblaze: Remove _start symbol handling at U-Boot start X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=b6fe10afe99c708a1dbb2d01be084aca32521651;p=u-boot.git microblaze: Remove _start symbol handling at U-Boot start Right now U-Boot runs all the time from the same address where it is loaded but going to full relocation code starting address doesn't need to be fixed and can be simply discovered from reading PC register. That's why use r20 to get PC address and subtract offset from the beginning to get starting address. Signed-off-by: Michal Simek Link: https://lore.kernel.org/r/044b727c33dfbe662f68512d0da0775a4805f360.1655299267.git.michal.simek@amd.com --- diff --git a/arch/microblaze/cpu/start.S b/arch/microblaze/cpu/start.S index c3d925c1d1..db3998f545 100644 --- a/arch/microblaze/cpu/start.S +++ b/arch/microblaze/cpu/start.S @@ -14,15 +14,16 @@ .global _start _start: mts rmsr, r0 /* disable cache */ + mfs r20, rpc + addi r20, r20, -4 mts rslr, r0 - addi r8, r0, _start - mts rshr, r8 + mts rshr, r20 #if defined(CONFIG_SPL_BUILD) addi r1, r0, CONFIG_SPL_STACK_ADDR #else - add r1, r0, r8 + add r1, r0, r20 #endif addi r1, r1, -4 /* Decrement SP to top of memory */