766211e748
Following occurs on boot message without this patch.
CPU1: processor failed to boot
Brought up 1 CPUs
SMP: Total of 1 processors activated...
This patch adds SYSRAM mapping for fixing Secondary CPU startup.
CPU1: Booted secondary processor
Brought up 2 CPUs
SMP: Total of 2 processors activated...
Signed-off-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
132 lines
2.9 KiB
C
132 lines
2.9 KiB
C
/* linux/arch/arm/mach-s5pv310/cpu.c
|
|
*
|
|
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
|
|
* http://www.samsung.com/
|
|
*
|
|
* 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/sched.h>
|
|
#include <linux/sysdev.h>
|
|
|
|
#include <asm/mach/map.h>
|
|
#include <asm/mach/irq.h>
|
|
|
|
#include <asm/proc-fns.h>
|
|
|
|
#include <plat/cpu.h>
|
|
#include <plat/clock.h>
|
|
#include <plat/s5pv310.h>
|
|
|
|
#include <mach/regs-irq.h>
|
|
|
|
void __iomem *gic_cpu_base_addr;
|
|
|
|
extern int combiner_init(unsigned int combiner_nr, void __iomem *base,
|
|
unsigned int irq_start);
|
|
extern void combiner_cascade_irq(unsigned int combiner_nr, unsigned int irq);
|
|
|
|
/* Initial IO mappings */
|
|
static struct map_desc s5pv310_iodesc[] __initdata = {
|
|
{
|
|
.virtual = (unsigned long)S5P_VA_COREPERI_BASE,
|
|
.pfn = __phys_to_pfn(S5PV310_PA_COREPERI),
|
|
.length = SZ_8K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_COMBINER_BASE,
|
|
.pfn = __phys_to_pfn(S5PV310_PA_COMBINER),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_L2CC,
|
|
.pfn = __phys_to_pfn(S5PV310_PA_L2CC),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_SYSRAM,
|
|
.pfn = __phys_to_pfn(S5PV310_PA_SYSRAM),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE,
|
|
}, {
|
|
.virtual = (unsigned long)S5P_VA_CMU,
|
|
.pfn = __phys_to_pfn(S5PV310_PA_CMU),
|
|
.length = SZ_128K,
|
|
.type = MT_DEVICE,
|
|
},
|
|
};
|
|
|
|
static void s5pv310_idle(void)
|
|
{
|
|
if (!need_resched())
|
|
cpu_do_idle();
|
|
|
|
local_irq_enable();
|
|
}
|
|
|
|
/* s5pv310_map_io
|
|
*
|
|
* register the standard cpu IO areas
|
|
*/
|
|
void __init s5pv310_map_io(void)
|
|
{
|
|
iotable_init(s5pv310_iodesc, ARRAY_SIZE(s5pv310_iodesc));
|
|
}
|
|
|
|
void __init s5pv310_init_clocks(int xtal)
|
|
{
|
|
printk(KERN_DEBUG "%s: initializing clocks\n", __func__);
|
|
|
|
s3c24xx_register_baseclocks(xtal);
|
|
s5p_register_clocks(xtal);
|
|
s5pv310_register_clocks();
|
|
s5pv310_setup_clocks();
|
|
}
|
|
|
|
void __init s5pv310_init_irq(void)
|
|
{
|
|
int irq;
|
|
|
|
gic_cpu_base_addr = S5P_VA_GIC_CPU;
|
|
gic_dist_init(0, S5P_VA_GIC_DIST, IRQ_LOCALTIMER);
|
|
gic_cpu_init(0, S5P_VA_GIC_CPU);
|
|
|
|
for (irq = 0; irq < MAX_COMBINER_NR; irq++) {
|
|
combiner_init(irq, (void __iomem *)S5P_VA_COMBINER(irq),
|
|
COMBINER_IRQ(irq, 0));
|
|
combiner_cascade_irq(irq, IRQ_SPI(irq));
|
|
}
|
|
|
|
/* The parameters of s5p_init_irq() are for VIC init.
|
|
* Theses parameters should be NULL and 0 because S5PV310
|
|
* uses GIC instead of VIC.
|
|
*/
|
|
s5p_init_irq(NULL, 0);
|
|
}
|
|
|
|
struct sysdev_class s5pv310_sysclass = {
|
|
.name = "s5pv310-core",
|
|
};
|
|
|
|
static struct sys_device s5pv310_sysdev = {
|
|
.cls = &s5pv310_sysclass,
|
|
};
|
|
|
|
static int __init s5pv310_core_init(void)
|
|
{
|
|
return sysdev_class_register(&s5pv310_sysclass);
|
|
}
|
|
|
|
core_initcall(s5pv310_core_init);
|
|
|
|
int __init s5pv310_init(void)
|
|
{
|
|
printk(KERN_INFO "S5PV310: Initializing architecture\n");
|
|
|
|
/* set idle function */
|
|
pm_idle = s5pv310_idle;
|
|
|
|
return sysdev_register(&s5pv310_sysdev);
|
|
}
|