mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-28 11:18:45 +07:00
d9b778e7bf
Rename pen_release and boot_lock in the Versatile specific SMP implementation, describe why these exist and state clearly that they should not be used in production implementations. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
42 lines
1014 B
ArmAsm
42 lines
1014 B
ArmAsm
/*
|
|
* linux/arch/arm/plat-versatile/headsmp.S
|
|
*
|
|
* Copyright (c) 2003 ARM Limited
|
|
* All Rights Reserved
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
#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)
|