mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
38 lines
868 B
38 lines
868 B
/* SPDX-License-Identifier: GPL-2.0-only */ |
|
/* |
|
* linux/arch/arm/plat-versatile/headsmp.S |
|
* |
|
* Copyright (c) 2003 ARM Limited |
|
* All Rights Reserved |
|
*/ |
|
#include <linux/linkage.h> |
|
#include <linux/init.h> |
|
#include <asm/assembler.h> |
|
|
|
/* |
|
* Realview/Versatile Express specific entry point for secondary CPUs. |
|
* This provides a "holding pen" into which all secondary cores are held |
|
* until we're ready for them to initialise. |
|
*/ |
|
ENTRY(versatile_secondary_startup) |
|
ARM_BE8(setend be) |
|
mrc p15, 0, r0, c0, c0, 5 |
|
bic r0, #0xff000000 |
|
adr r4, 1f |
|
ldmia r4, {r5, r6} |
|
sub r4, r4, r5 |
|
add r6, r6, r4 |
|
pen: ldr r7, [r6] |
|
cmp r7, r0 |
|
bne pen |
|
|
|
/* |
|
* we've been released from the holding pen: secondary_stack |
|
* should now contain the SVC stack for this core |
|
*/ |
|
b secondary_startup |
|
|
|
.align |
|
1: .long . |
|
.long versatile_cpu_release |
|
ENDPROC(versatile_secondary_startup)
|
|
|