alistair23-linux/arch/arm/mach-shmobile/headsmp-scu.S
Olof Johansson 6a33fc8cac mvebu fixes-non-critical for v3.12
- dove
     - fix section mismatch (all callers are already _init, so it's just a space
       issue)
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Merge tag 'fixes-non-3.12' of git://git.infradead.org/linux-mvebu into next/fixes-non-critical

From Jason Cooper:
mvebu fixes-non-critical for v3.12

 - dove
    - fix section mismatch (all callers are already _init, so it's just a space
      issue)

* tag 'fixes-non-3.12' of git://git.infradead.org/linux-mvebu:
  ARM: dove: fix missing __init section of dove_mpp_gpio_mode
  + Linux 3.11-rc2

Signed-off-by: Olof Johansson <olof@lixom.net>
2013-08-04 13:19:05 -07:00

52 lines
1.5 KiB
ArmAsm

/*
* Shared SCU setup for mach-shmobile
*
* Copyright (C) 2012 Bastian Hecht
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR /PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <linux/linkage.h>
#include <linux/init.h>
#include <asm/memory.h>
/*
* Boot code for secondary CPUs.
*
* First we turn on L1 cache coherency for our CPU. Then we jump to
* shmobile_invalidate_start that invalidates the cache and hands over control
* to the common ARM startup code.
*/
ENTRY(shmobile_boot_scu)
@ r0 = SCU base address
mrc p15, 0, r1, c0, c0, 5 @ read MIPDR
and r1, r1, #3 @ mask out cpu ID
lsl r1, r1, #3 @ we will shift by cpu_id * 8 bits
ldr r2, [r0, #8] @ SCU Power Status Register
mov r3, #3
lsl r3, r3, r1
bic r2, r2, r3 @ Clear bits of our CPU (Run Mode)
str r2, [r0, #8] @ write back
b shmobile_invalidate_start
ENDPROC(shmobile_boot_scu)
.text
.align 2
.globl shmobile_scu_base
shmobile_scu_base:
.space 4