mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-20 19:23:57 +08:00
e53b1fd432
Unlike the Armada XP and the Armada 370, this SoC uses a Cortex A9 core. Consequently, the procedure to enter the idle state is different: interaction with the SCU, not disabling snooping, etc. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Link: https://lkml.kernel.org/r/1406120453-29291-16-git-send-email-thomas.petazzoni@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
62 lines
1.7 KiB
ArmAsm
62 lines
1.7 KiB
ArmAsm
/*
|
|
* Copyright (C) 2014 Marvell
|
|
*
|
|
* Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
|
|
* Gregory Clement <gregory.clement@free-electrons.com>
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public
|
|
* License version 2. This program is licensed "as is" without any
|
|
* warranty of any kind, whether express or implied.
|
|
*/
|
|
|
|
#include <linux/linkage.h>
|
|
#include <asm/assembler.h>
|
|
|
|
/*
|
|
* This is the entry point through which CPUs exiting cpuidle deep
|
|
* idle state are going.
|
|
*/
|
|
ENTRY(armada_370_xp_cpu_resume)
|
|
ARM_BE8(setend be ) @ go BE8 if entered LE
|
|
bl ll_add_cpu_to_smp_group
|
|
bl ll_enable_coherency
|
|
b cpu_resume
|
|
ENDPROC(armada_370_xp_cpu_resume)
|
|
|
|
ENTRY(armada_38x_cpu_resume)
|
|
/* do we need it for Armada 38x*/
|
|
ARM_BE8(setend be ) @ go BE8 if entered LE
|
|
bl v7_invalidate_l1
|
|
mrc p15, 4, r1, c15, c0 @ get SCU base address
|
|
orr r1, r1, #0x8 @ SCU CPU Power Status Register
|
|
mrc 15, 0, r0, cr0, cr0, 5 @ get the CPU ID
|
|
and r0, r0, #15
|
|
add r1, r1, r0
|
|
mov r0, #0x0
|
|
strb r0, [r1] @ switch SCU power state to Normal mode
|
|
b cpu_resume
|
|
ENDPROC(armada_38x_cpu_resume)
|
|
|
|
.global mvebu_boot_wa_start
|
|
.global mvebu_boot_wa_end
|
|
|
|
/* The following code will be executed from SRAM */
|
|
ENTRY(mvebu_boot_wa_start)
|
|
mvebu_boot_wa_start:
|
|
ARM_BE8(setend be)
|
|
adr r0, 1f
|
|
ldr r0, [r0] @ load the address of the
|
|
@ resume register
|
|
ldr r0, [r0] @ load the value in the
|
|
@ resume register
|
|
ARM_BE8(rev r0, r0) @ the value is stored LE
|
|
mov pc, r0 @ jump to this value
|
|
/*
|
|
* the last word of this piece of code will be filled by the physical
|
|
* address of the boot address register just after being copied in SRAM
|
|
*/
|
|
1:
|
|
.long .
|
|
mvebu_boot_wa_end:
|
|
ENDPROC(mvebu_boot_wa_end)
|