fa91515cbf
Pull ARM Renesas SoC cleanup, refactoring and more SMP support from Kevin Hilman: "Lots of cleanup and refactoring and some SMP additions for Renesas platforms. Due to some inter-dependencies with other arm-soc branches, this Renesas stuff was separated out for sending after the other branches were merged. Highlights: - remove unused board support and cleanup of unused headers - refactoring of init and device registration - simplify IRQ initialization" * tag 'renesas-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (68 commits) ARM: shmobile: Per-CPU SMP boot / sleep code for SCU SoCs ARM: shmobile: Introduce per-CPU SMP boot / sleep code ARM: shmobile: Use shared SCU CPU Hotplug code on r8a7779 ARM: shmobile: Use shared SCU CPU Hotplug code on sh73a0 ARM: shmobile: Add shared SCU CPU Hotplug code ARM: shmobile: Use shared SCU SMP boot code on emev2 ARM: shmobile: Use shared SCU SMP boot code on r8a7779 ARM: shmobile: Use shared SCU SMP boot code on sh73a0 ARM: shmobile: Introduce shared SCU SMP boot code ARM: shmobile: sh73a0: Remove global GPIO_NR definition ARM: shmobile: kzm9d: remove nfsroot settings from bootargs ARM: shmobile: armadillo800eva: remove nfsroot settings from bootargs ARM: shmobile: r8a7779: move r8a7779_init_irq_xxx() to setup ARM: shmobile: r8a7740: move r8a7740_init_irq_of() to setup ARM: shmobile: bockw: add missing __initdata ARM: shmobile: r8a7790: add missing __initdata ARM: shmobile: r8a7779: add missing __initdata ARM: shmobile: Remove unused shmobile_init_time() ARM: shmobile: Use clocksource_of_init() on r8a7790 ARM: shmobile: Use default ->init_time() on KZM9G DT ref ...
92 lines
2.0 KiB
ArmAsm
92 lines
2.0 KiB
ArmAsm
/*
|
|
* SMP support for R-Mobile / SH-Mobile
|
|
*
|
|
* Copyright (C) 2010 Magnus Damm
|
|
* Copyright (C) 2010 Takashi Yoshii
|
|
*
|
|
* Based on vexpress, 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/memory.h>
|
|
|
|
ENTRY(shmobile_invalidate_start)
|
|
bl v7_invalidate_l1
|
|
b secondary_startup
|
|
ENDPROC(shmobile_invalidate_start)
|
|
|
|
/*
|
|
* Reset vector for secondary CPUs.
|
|
* This will be mapped at address 0 by SBAR register.
|
|
* We need _long_ jump to the physical address.
|
|
*/
|
|
.arm
|
|
.align 12
|
|
ENTRY(shmobile_boot_vector)
|
|
ldr r0, 2f
|
|
ldr r1, 1f
|
|
bx r1
|
|
|
|
ENDPROC(shmobile_boot_vector)
|
|
|
|
.align 2
|
|
.globl shmobile_boot_fn
|
|
shmobile_boot_fn:
|
|
1: .space 4
|
|
.globl shmobile_boot_arg
|
|
shmobile_boot_arg:
|
|
2: .space 4
|
|
|
|
/*
|
|
* Per-CPU SMP boot function/argument selection code based on MPIDR
|
|
*/
|
|
|
|
ENTRY(shmobile_smp_boot)
|
|
@ r0 = MPIDR_HWID_BITMASK
|
|
mrc p15, 0, r1, c0, c0, 5 @ r1 = MPIDR
|
|
and r0, r1, r0 @ r0 = cpu_logical_map() value
|
|
mov r1, #0 @ r1 = CPU index
|
|
adr r5, 1f @ array of per-cpu mpidr values
|
|
adr r6, 2f @ array of per-cpu functions
|
|
adr r7, 3f @ array of per-cpu arguments
|
|
|
|
shmobile_smp_boot_find_mpidr:
|
|
ldr r8, [r5, r1, lsl #2]
|
|
cmp r8, r0
|
|
bne shmobile_smp_boot_next
|
|
|
|
ldr r9, [r6, r1, lsl #2]
|
|
cmp r9, #0
|
|
bne shmobile_smp_boot_found
|
|
|
|
shmobile_smp_boot_next:
|
|
add r1, r1, #1
|
|
cmp r1, #CONFIG_NR_CPUS
|
|
blo shmobile_smp_boot_find_mpidr
|
|
|
|
b shmobile_smp_sleep
|
|
|
|
shmobile_smp_boot_found:
|
|
ldr r0, [r7, r1, lsl #2]
|
|
mov pc, r9
|
|
ENDPROC(shmobile_smp_boot)
|
|
|
|
ENTRY(shmobile_smp_sleep)
|
|
wfi
|
|
b shmobile_smp_boot
|
|
ENDPROC(shmobile_smp_sleep)
|
|
|
|
.globl shmobile_smp_mpidr
|
|
shmobile_smp_mpidr:
|
|
1: .space CONFIG_NR_CPUS * 4
|
|
.globl shmobile_smp_fn
|
|
shmobile_smp_fn:
|
|
2: .space CONFIG_NR_CPUS * 4
|
|
.globl shmobile_smp_arg
|
|
shmobile_smp_arg:
|
|
3: .space CONFIG_NR_CPUS * 4
|