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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
/*
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* Copyright (C) 2014 Marvell
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*
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* Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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* Gregory Clement <gregory.clement@free-electrons.com>
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <linux/linkage.h>
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#include <asm/assembler.h>
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/*
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* This is the entry point through which CPUs exiting cpuidle deep
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* idle state are going.
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*/
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ENTRY(armada_370_xp_cpu_resume)
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ARM_BE8(setend be ) @ go BE8 if entered LE
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bl ll_add_cpu_to_smp_group
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bl ll_enable_coherency
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b cpu_resume
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ENDPROC(armada_370_xp_cpu_resume)
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ENTRY(armada_38x_cpu_resume)
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/* do we need it for Armada 38x*/
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ARM_BE8(setend be ) @ go BE8 if entered LE
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bl v7_invalidate_l1
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mrc p15, 4, r1, c15, c0 @ get SCU base address
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orr r1, r1, #0x8 @ SCU CPU Power Status Register
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mrc 15, 0, r0, cr0, cr0, 5 @ get the CPU ID
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and r0, r0, #15
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add r1, r1, r0
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mov r0, #0x0
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strb r0, [r1] @ switch SCU power state to Normal mode
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b cpu_resume
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ENDPROC(armada_38x_cpu_resume)
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.global mvebu_boot_wa_start
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.global mvebu_boot_wa_end
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/* The following code will be executed from SRAM */
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ENTRY(mvebu_boot_wa_start)
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mvebu_boot_wa_start:
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ARM_BE8(setend be)
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adr r0, 1f
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ldr r0, [r0] @ load the address of the
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@ resume register
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ldr r0, [r0] @ load the value in the
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@ resume register
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ARM_BE8(rev r0, r0) @ the value is stored LE
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mov pc, r0 @ jump to this value
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/*
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* the last word of this piece of code will be filled by the physical
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* address of the boot address register just after being copied in SRAM
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*/
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1:
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.long .
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mvebu_boot_wa_end:
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ENDPROC(mvebu_boot_wa_end)
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