Mirrors/u-boot
2
0
Fork 0
mirror of https://github.com/AsahiLinux/u-boot synced 2024-11-10 23:24:38 +00:00
Code Issues Projects Releases Packages Wiki Activity

arm: add save_boot_params for ARM1176

Browse source 
Implement a hook to allow boards to save boot-time CPU state for later
use. When U-Boot is chain-loaded by another bootloader, CPU registers may
contain useful information such as system configuration information. This
feature mirrors the equivalent ARMv7 feature.

Signed-off-by: Cédric Schieli <cschieli@gmail.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
This commit is contained in:
Cédric Schieli 2016-11-11 11:59:06 +01:00 committed by Tom Rini
parent 83dd98e012
commit 3e10fcde3f
1 changed files with 10 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

10
arch/arm/cpu/arm1176/start.S
View file

@ -16,6 +16,7 @@
#include <asm-offsets.h>
#include <config.h>
#include <linux/linkage.h>
#ifndef CONFIG_SYS_PHY_UBOOT_BASE
#define CONFIG_SYS_PHY_UBOOT_BASE CONFIG_SYS_UBOOT_BASE
@ -37,6 +38,11 @@
.globl reset
reset:
/* Allow the board to save important registers */
b save_boot_params
.globl save_boot_params_ret
save_boot_params_ret:
/*
* set the cpu to SVC32 mode
*/
@ -110,3 +116,7 @@ mmu_disable_phys:
c_runtime_cpu_setup:
mov pc, lr
WEAK(save_boot_params)
b save_boot_params_ret /* back to my caller */
ENDPROC(save_boot_params)