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ARM: S5PV310: Add new CPU initialization support

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This patch adds Samsung S5PV310/S5PC210 CPU support.
The S5PV310/S5PC210 integrates a ARM Cortex A9 multi-core.

Signed-off-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Jongpill Lee <boyko.lee@samsung.com>
Signed-off-by: Jiseong Oh <jiseong.oh@samsung.com>
[kgene.kim@samsung.com: fix build errors]
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
This commit is contained in:
Changhwan Youn 2010-07-26 21:08:52 +09:00 committed by Kukjin Kim
parent 88baf2096c
commit 2b12b5c4ff
20 changed files with 995 additions and 0 deletions
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122
arch/arm/mach-s5pv310/cpu.c Normal file
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/* 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,
},
};
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);
}

41
arch/arm/mach-s5pv310/headsmp.S Normal file
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/*
* linux/arch/arm/mach-s5pv310/headsmp.S
*
* Cloned from linux/arch/arm/mach-realview/headsmp.S
*
* 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>
__INIT
/*
* s5pv310 specific entry point for secondary CPUs. This provides
* a "holding pen" into which all secondary cores are held until we're
* ready for them to initialise.
*/
ENTRY(s5pv310_secondary_startup)
mrc p15, 0, r0, c0, c0, 5
and r0, r0, #15
adr r4, 1f
ldmia r4, {r5, r6}
sub r4, r4, r5
add r6, r6, r4
pen: ldr r7, [r6]
cmp r7, r0
bne pen
/*
* we've been released from the holding pen: secondary_stack
* should now contain the SVC stack for this core
*/
b secondary_startup
1: .long .
.long pen_release

36
arch/arm/mach-s5pv310/include/mach/debug-macro.S Normal file
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/* linux/arch/arm/mach-s5pv310/include/mach/debug-macro.S
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* Based on arch/arm/mach-s3c6400/include/mach/debug-macro.S
*
* 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.
*/
/* pull in the relevant register and map files. */
#include <mach/map.h>
/* note, for the boot process to work we have to keep the UART
* virtual address aligned to an 1MiB boundary for the L1
* mapping the head code makes. We keep the UART virtual address
* aligned and add in the offset when we load the value here.
*/
.macro addruart, rx, tmp
mrc p15, 0, \rx, c1, c0
tst \rx, #1
ldreq \rx, = S3C_PA_UART
ldrne \rx, = S3C_VA_UART
#if CONFIG_DEBUG_S3C_UART != 0
add \rx, \rx, #(0x10000 * CONFIG_DEBUG_S3C_UART)
#endif
.endm
#define fifo_full fifo_full_s5pv210
#define fifo_level fifo_level_s5pv210
#include <plat/debug-macro.S>

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arch/arm/mach-s5pv310/include/mach/entry-macro.S Normal file
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/* arch/arm/mach-s5pv310/include/mach/entry-macro.S
*
* Cloned from arch/arm/mach-realview/include/mach/entry-macro.S
*
* Low-level IRQ helper macros for S5PV310 platforms
*
* 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 <mach/hardware.h>
#include <asm/hardware/gic.h>
.macro disable_fiq
.endm
.macro get_irqnr_preamble, base, tmp
ldr \base, =gic_cpu_base_addr
ldr \base, [\base]
.endm
.macro arch_ret_to_user, tmp1, tmp2
.endm
/*
* The interrupt numbering scheme is defined in the
* interrupt controller spec. To wit:
*
* Interrupts 0-15 are IPI
* 16-28 are reserved
* 29-31 are local. We allow 30 to be used for the watchdog.
* 32-1020 are global
* 1021-1022 are reserved
* 1023 is "spurious" (no interrupt)
*
* For now, we ignore all local interrupts so only return an interrupt if it's
* between 30 and 1020. The test_for_ipi routine below will pick up on IPIs.
*
* A simple read from the controller will tell us the number of the highest
* priority enabled interrupt. We then just need to check whether it is in the
* valid range for an IRQ (30-1020 inclusive).
*/
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
ldr \irqstat, [\base, #GIC_CPU_INTACK] /* bits 12-10 = src CPU, 9-0 = int # */
ldr \tmp, =1021
bic \irqnr, \irqstat, #0x1c00
cmp \irqnr, #29
cmpcc \irqnr, \irqnr
cmpne \irqnr, \tmp
cmpcs \irqnr, \irqnr
addne \irqnr, \irqnr, #32
.endm
/* We assume that irqstat (the raw value of the IRQ acknowledge
* register) is preserved from the macro above.
* If there is an IPI, we immediately signal end of interrupt on the
* controller, since this requires the original irqstat value which
* we won't easily be able to recreate later.
*/
.macro test_for_ipi, irqnr, irqstat, base, tmp
bic \irqnr, \irqstat, #0x1c00
cmp \irqnr, #16
strcc \irqstat, [\base, #GIC_CPU_EOI]
cmpcs \irqnr, \irqnr
.endm
/* As above, this assumes that irqstat and base are preserved.. */
.macro test_for_ltirq, irqnr, irqstat, base, tmp
bic \irqnr, \irqstat, #0x1c00
mov \tmp, #0
cmp \irqnr, #29
moveq \tmp, #1
streq \irqstat, [\base, #GIC_CPU_EOI]
cmp \tmp, #0
.endm

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/* linux/arch/arm/mach-s5pv310/include/mach/gpio.h
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* S5PV310 - GPIO lib support
*
* 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.
*/
#ifndef __ASM_ARCH_GPIO_H
#define __ASM_ARCH_GPIO_H __FILE__
#define gpio_get_value __gpio_get_value
#define gpio_set_value __gpio_set_value
#define gpio_cansleep __gpio_cansleep
#define gpio_to_irq __gpio_to_irq
/* Practically, GPIO banks upto GPZ are the configurable gpio banks */
/* GPIO bank sizes */
#define S5PV310_GPIO_A0_NR (8)
#define S5PV310_GPIO_A1_NR (6)
#define S5PV310_GPIO_B_NR (8)
#define S5PV310_GPIO_C0_NR (5)
#define S5PV310_GPIO_C1_NR (5)
#define S5PV310_GPIO_D0_NR (4)
#define S5PV310_GPIO_D1_NR (4)
#define S5PV310_GPIO_E0_NR (5)
#define S5PV310_GPIO_E1_NR (8)
#define S5PV310_GPIO_E2_NR (6)
#define S5PV310_GPIO_E3_NR (8)
#define S5PV310_GPIO_E4_NR (8)
#define S5PV310_GPIO_F0_NR (8)
#define S5PV310_GPIO_F1_NR (8)
#define S5PV310_GPIO_F2_NR (8)
#define S5PV310_GPIO_F3_NR (6)
#define S5PV310_GPIO_J0_NR (8)
#define S5PV310_GPIO_J1_NR (5)
#define S5PV310_GPIO_K0_NR (7)
#define S5PV310_GPIO_K1_NR (7)
#define S5PV310_GPIO_K2_NR (7)
#define S5PV310_GPIO_K3_NR (7)
#define S5PV310_GPIO_L0_NR (8)
#define S5PV310_GPIO_L1_NR (3)
#define S5PV310_GPIO_L2_NR (8)
#define S5PV310_GPIO_X0_NR (8)
#define S5PV310_GPIO_X1_NR (8)
#define S5PV310_GPIO_X2_NR (8)
#define S5PV310_GPIO_X3_NR (8)
#define S5PV310_GPIO_Z_NR (7)
/* GPIO bank numbers */
#define S5PV310_GPIO_NEXT(__gpio) \
((__gpio##_START) + (__gpio##_NR) + CONFIG_S3C_GPIO_SPACE + 1)
enum s5p_gpio_number {
S5PV310_GPIO_A0_START = 0,
S5PV310_GPIO_A1_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_A0),
S5PV310_GPIO_B_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_A1),
S5PV310_GPIO_C0_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_B),
S5PV310_GPIO_C1_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_C0),
S5PV310_GPIO_D0_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_C1),
S5PV310_GPIO_D1_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_D0),
S5PV310_GPIO_E0_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_D1),
S5PV310_GPIO_E1_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_E0),
S5PV310_GPIO_E2_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_E1),
S5PV310_GPIO_E3_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_E2),
S5PV310_GPIO_E4_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_E3),
S5PV310_GPIO_F0_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_E4),
S5PV310_GPIO_F1_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_F0),
S5PV310_GPIO_F2_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_F1),
S5PV310_GPIO_F3_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_F2),
S5PV310_GPIO_J0_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_F3),
S5PV310_GPIO_J1_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_J0),
S5PV310_GPIO_K0_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_J1),
S5PV310_GPIO_K1_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_K0),
S5PV310_GPIO_K2_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_K1),
S5PV310_GPIO_K3_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_K2),
S5PV310_GPIO_L0_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_K3),
S5PV310_GPIO_L1_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_L0),
S5PV310_GPIO_L2_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_L1),
S5PV310_GPIO_X0_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_L2),
S5PV310_GPIO_X1_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_X0),
S5PV310_GPIO_X2_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_X1),
S5PV310_GPIO_X3_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_X2),
S5PV310_GPIO_Z_START = S5PV310_GPIO_NEXT(S5PV310_GPIO_X3),
};
/* S5PV310 GPIO number definitions */
#define S5PV310_GPA0(_nr) (S5PV310_GPIO_A0_START + (_nr))
#define S5PV310_GPA1(_nr) (S5PV310_GPIO_A1_START + (_nr))
#define S5PV310_GPB(_nr) (S5PV310_GPIO_B_START + (_nr))
#define S5PV310_GPC0(_nr) (S5PV310_GPIO_C0_START + (_nr))
#define S5PV310_GPC1(_nr) (S5PV310_GPIO_C1_START + (_nr))
#define S5PV310_GPD0(_nr) (S5PV310_GPIO_D0_START + (_nr))
#define S5PV310_GPD1(_nr) (S5PV310_GPIO_D1_START + (_nr))
#define S5PV310_GPE0(_nr) (S5PV310_GPIO_E0_START + (_nr))
#define S5PV310_GPE1(_nr) (S5PV310_GPIO_E1_START + (_nr))
#define S5PV310_GPE2(_nr) (S5PV310_GPIO_E2_START + (_nr))
#define S5PV310_GPE3(_nr) (S5PV310_GPIO_E3_START + (_nr))
#define S5PV310_GPE4(_nr) (S5PV310_GPIO_E4_START + (_nr))
#define S5PV310_GPF0(_nr) (S5PV310_GPIO_F0_START + (_nr))
#define S5PV310_GPF1(_nr) (S5PV310_GPIO_F1_START + (_nr))
#define S5PV310_GPF2(_nr) (S5PV310_GPIO_F2_START + (_nr))
#define S5PV310_GPF3(_nr) (S5PV310_GPIO_F3_START + (_nr))
#define S5PV310_GPJ0(_nr) (S5PV310_GPIO_J0_START + (_nr))
#define S5PV310_GPJ1(_nr) (S5PV310_GPIO_J1_START + (_nr))
#define S5PV310_GPK0(_nr) (S5PV310_GPIO_K0_START + (_nr))
#define S5PV310_GPK1(_nr) (S5PV310_GPIO_K1_START + (_nr))
#define S5PV310_GPK2(_nr) (S5PV310_GPIO_K2_START + (_nr))
#define S5PV310_GPK3(_nr) (S5PV310_GPIO_K3_START + (_nr))
#define S5PV310_GPL0(_nr) (S5PV310_GPIO_L0_START + (_nr))
#define S5PV310_GPL1(_nr) (S5PV310_GPIO_L1_START + (_nr))
#define S5PV310_GPL2(_nr) (S5PV310_GPIO_L2_START + (_nr))
#define S5PV310_GPX0(_nr) (S5PV310_GPIO_X0_START + (_nr))
#define S5PV310_GPX1(_nr) (S5PV310_GPIO_X1_START + (_nr))
#define S5PV310_GPX2(_nr) (S5PV310_GPIO_X2_START + (_nr))
#define S5PV310_GPX3(_nr) (S5PV310_GPIO_X3_START + (_nr))
#define S5PV310_GPZ(_nr) (S5PV310_GPIO_Z_START + (_nr))
/* the end of the S5PV310 specific gpios */
#define S5PV310_GPIO_END (S5PV310_GPZ(S5PV310_GPIO_Z_NR) + 1)
#define S3C_GPIO_END S5PV310_GPIO_END
/* define the number of gpios we need to the one after the GPZ() range */
#define ARCH_NR_GPIOS (S5PV310_GPZ(S5PV310_GPIO_Z_NR) + \
CONFIG_SAMSUNG_GPIO_EXTRA + 1)
#include <asm-generic/gpio.h>
#endif /* __ASM_ARCH_GPIO_H */

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arch/arm/mach-s5pv310/include/mach/hardware.h Normal file
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/* linux/arch/arm/mach-s5pv310/include/mach/hardware.h
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* S5PV310 - Hardware support
*
* 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.
*/
#ifndef __ASM_ARCH_HARDWARE_H
#define __ASM_ARCH_HARDWARE_H __FILE__
/* currently nothing here, placeholder */
#endif /* __ASM_ARCH_HARDWARE_H */

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arch/arm/mach-s5pv310/include/mach/io.h Normal file
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/* linux/arch/arm/mach-s5pv310/include/mach/io.h
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* Copyright 2008-2010 Ben Dooks <ben-linux@fluff.org>
*
* Based on arch/arm/mach-s5p6442/include/mach/io.h
*
* Default IO routines for S5PV310
*
* 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.
*/
#ifndef __ASM_ARM_ARCH_IO_H
#define __ASM_ARM_ARCH_IO_H __FILE__
/* No current ISA/PCI bus support. */
#define __io(a) __typesafe_io(a)
#define __mem_pci(a) (a)
#define IO_SPACE_LIMIT (0xFFFFFFFF)
#endif /* __ASM_ARM_ARCH_IO_H */

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arch/arm/mach-s5pv310/include/mach/map.h Normal file
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/* linux/arch/arm/mach-s5pv310/include/mach/map.h
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* S5PV310 - Memory map definitions
*
* 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.
*/
#ifndef __ASM_ARCH_MAP_H
#define __ASM_ARCH_MAP_H __FILE__
#include <plat/map-base.h>
/*
* S5PV310 UART offset is 0x10000 but the older S5P SoCs are 0x400.
* So need to define it, and here is to avoid redefinition warning.
*/
#define S3C_UART_OFFSET (0x10000)
#include <plat/map-s5p.h>
#define S5PV310_PA_CHIPID (0x10000000)
#define S5P_PA_CHIPID S5PV310_PA_CHIPID
#define S5PV310_PA_SYSCON (0x10020000)
#define S5P_PA_SYSCON S5PV310_PA_SYSCON
#define S5PV310_PA_WATCHDOG (0x10060000)
#define S5PV310_PA_COMBINER (0x10448000)
#define S5PV310_PA_COREPERI (0x10500000)
#define S5PV310_PA_GIC_CPU (0x10500100)
#define S5PV310_PA_TWD (0x10500600)
#define S5PV310_PA_GIC_DIST (0x10501000)
#define S5PV310_PA_L2CC (0x10502000)
#define S5PV310_PA_GPIO (0x11000000)
#define S5P_PA_GPIO S5PV310_PA_GPIO
#define S5PV310_PA_UART (0x13800000)
#define S5P_PA_UART(x) (S5PV310_PA_UART + ((x) * S3C_UART_OFFSET))
#define S5P_PA_UART0 S5P_PA_UART(0)
#define S5P_PA_UART1 S5P_PA_UART(1)
#define S5P_PA_UART2 S5P_PA_UART(2)
#define S5P_PA_UART3 S5P_PA_UART(3)
#define S5P_PA_UART4 S5P_PA_UART(4)
#define S5P_SZ_UART SZ_256
#define S5PV310_PA_IIC0 (0x13860000)
#define S5PV310_PA_TIMER (0x139D0000)
#define S5P_PA_TIMER S5PV310_PA_TIMER
#define S5PV310_PA_SDRAM (0x40000000)
#define S5P_PA_SDRAM S5PV310_PA_SDRAM
/* compatibiltiy defines. */
#define S3C_PA_UART S5PV310_PA_UART
#define S3C_PA_IIC S5PV310_PA_IIC0
#define S3C_PA_WDT S5PV310_PA_WATCHDOG
#endif /* __ASM_ARCH_MAP_H */

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/* linux/arch/arm/mach-s5pv310/include/mach/memory.h
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* S5PV310 - Memory definitions
*
* 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.
*/
#ifndef __ASM_ARCH_MEMORY_H
#define __ASM_ARCH_MEMORY_H __FILE__
#define PHYS_OFFSET UL(0x40000000)
/* Maximum of 256MiB in one bank */
#define MAX_PHYSMEM_BITS 32
#define SECTION_SIZE_BITS 28
#endif /* __ASM_ARCH_MEMORY_H */

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/* linux/arch/arm/mach-s5pv310/include/mach/smp.h
*
* Cloned from arch/arm/mach-realview/include/mach/smp.h
*/
#ifndef ASM_ARCH_SMP_H
#define ASM_ARCH_SMP_H __FILE__
#include <asm/hardware/gic.h>
extern void __iomem *gic_cpu_base_addr;
#define hard_smp_processor_id() \
({ \
unsigned int cpunum; \
__asm__("mrc p15, 0, %0, c0, c0, 5" \
: "=r" (cpunum)); \
cpunum &= 0x03; \
})
/*
* We use IRQ1 as the IPI
*/
static inline void smp_cross_call(const struct cpumask *mask)
{
gic_raise_softirq(mask, 1);
}
#endif

22
arch/arm/mach-s5pv310/include/mach/system.h Normal file
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@ -0,0 +1,22 @@
/* linux/arch/arm/mach-s5pv310/include/mach/system.h
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* S5PV310 - system support header
*
* 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.
*/
#ifndef __ASM_ARCH_SYSTEM_H
#define __ASM_ARCH_SYSTEM_H __FILE__
#include <plat/system-reset.h>
static void arch_idle(void)
{
/* nothing here yet */
}
#endif /* __ASM_ARCH_SYSTEM_H */

29
arch/arm/mach-s5pv310/include/mach/timex.h Normal file
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@ -0,0 +1,29 @@
/* linux/arch/arm/mach-s5pv310/include/mach/timex.h
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* Copyright (c) 2003-2010 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
*
* Based on arch/arm/mach-s5p6442/include/mach/timex.h
*
* S5PV310 - time parameters
*
* 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.
*/
#ifndef __ASM_ARCH_TIMEX_H
#define __ASM_ARCH_TIMEX_H __FILE__
/* CLOCK_TICK_RATE needs to be evaluatable by the cpp, so making it
* a variable is useless. It seems as long as we make our timers an
* exact multiple of HZ, any value that makes a 1->1 correspondence
* for the time conversion functions to/from jiffies is acceptable.
*/
#define CLOCK_TICK_RATE 12000000
#endif /* __ASM_ARCH_TIMEX_H */

30
arch/arm/mach-s5pv310/include/mach/uncompress.h Normal file
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@ -0,0 +1,30 @@
/* linux/arch/arm/mach-s5pv310/include/mach/uncompress.h
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* S5PV310 - uncompress code
*
* 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.
*/
#ifndef __ASM_ARCH_UNCOMPRESS_H
#define __ASM_ARCH_UNCOMPRESS_H __FILE__
#include <mach/map.h>
#include <plat/uncompress.h>
static void arch_detect_cpu(void)
{
/* we do not need to do any cpu detection here at the moment. */
/*
* For preventing FIFO overrun or infinite loop of UART console,
* fifo_max should be the minimum fifo size of all of the UART channels
*/
fifo_mask = S5PV210_UFSTAT_TXMASK;
fifo_max = 15 << S5PV210_UFSTAT_TXSHIFT;
}
#endif /* __ASM_ARCH_UNCOMPRESS_H */

22
arch/arm/mach-s5pv310/include/mach/vmalloc.h Normal file
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@ -0,0 +1,22 @@
/* linux/arch/arm/mach-s5pv310/include/mach/vmalloc.h
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* Copyright 2010 Ben Dooks <ben-linux@fluff.org>
*
* Based on arch/arm/mach-s5p6440/include/mach/vmalloc.h
*
* 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.
*
* S5PV310 vmalloc definition
*/
#ifndef __ASM_ARCH_VMALLOC_H
#define __ASM_ARCH_VMALLOC_H __FILE__
#define VMALLOC_END (0xF0000000)
#endif /* __ASM_ARCH_VMALLOC_H */

41
arch/arm/mach-s5pv310/init.c Normal file
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@ -0,0 +1,41 @@
/* linux/arch/arm/mach-s5pv310/init.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/serial_core.h>
#include <plat/cpu.h>
#include <plat/devs.h>
#include <plat/regs-serial.h>
static struct s3c24xx_uart_clksrc s5pv310_serial_clocks[] = {
[0] = {
.name = "uclk1",
.divisor = 1,
.min_baud = 0,
.max_baud = 0,
},
};
/* uart registration process */
void __init s5pv310_common_init_uarts(struct s3c2410_uartcfg *cfg, int no)
{
struct s3c2410_uartcfg *tcfg = cfg;
u32 ucnt;
for (ucnt = 0; ucnt < no; ucnt++, tcfg++) {
if (!tcfg->clocks) {
tcfg->has_fracval = 1;
tcfg->clocks = s5pv310_serial_clocks;
tcfg->clocks_size = ARRAY_SIZE(s5pv310_serial_clocks);
}
}
s3c24xx_init_uartdevs("s5pv210-uart", s5p_uart_resources, cfg, no);
}

192
arch/arm/mach-s5pv310/platsmp.c Normal file
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@ -0,0 +1,192 @@
/* linux/arch/arm/mach-s5pv310/platsmp.c
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* Cloned from linux/arch/arm/mach-vexpress/platsmp.c
*
* Copyright (C) 2002 ARM Ltd.
* 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/init.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/jiffies.h>
#include <linux/smp.h>
#include <linux/io.h>
#include <asm/cacheflush.h>
#include <asm/localtimer.h>
#include <asm/smp_scu.h>
#include <asm/unified.h>
#include <mach/hardware.h>
#include <mach/regs-clock.h>
extern void s5pv310_secondary_startup(void);
/*
* control for which core is the next to come out of the secondary
* boot "holding pen"
*/
volatile int __cpuinitdata pen_release = -1;
static void __iomem *scu_base_addr(void)
{
return (void __iomem *)(S5P_VA_SCU);
}
static DEFINE_SPINLOCK(boot_lock);
void __cpuinit platform_secondary_init(unsigned int cpu)
{
trace_hardirqs_off();
/*
* if any interrupts are already enabled for the primary
* core (e.g. timer irq), then they will not have been enabled
* for us: do so
*/
gic_cpu_init(0, gic_cpu_base_addr);
/*
* let the primary processor know we're out of the
* pen, then head off into the C entry point
*/
pen_release = -1;
smp_wmb();
/*
* Synchronise with the boot thread.
*/
spin_lock(&boot_lock);
spin_unlock(&boot_lock);
}
int __cpuinit boot_secondary(unsigned int cpu, struct task_struct *idle)
{
unsigned long timeout;
/*
* Set synchronisation state between this boot processor
* and the secondary one
*/
spin_lock(&boot_lock);
/*
* The secondary processor is waiting to be released from
* the holding pen - release it, then wait for it to flag
* that it has been released by resetting pen_release.
*
* Note that "pen_release" is the hardware CPU ID, whereas
* "cpu" is Linux's internal ID.
*/
pen_release = cpu;
__cpuc_flush_dcache_area((void *)&pen_release, sizeof(pen_release));
outer_clean_range(__pa(&pen_release), __pa(&pen_release + 1));
/*
* Send the secondary CPU a soft interrupt, thereby causing
* the boot monitor to read the system wide flags register,
* and branch to the address found there.
*/
smp_cross_call(cpumask_of(cpu));
timeout = jiffies + (1 * HZ);
while (time_before(jiffies, timeout)) {
smp_rmb();
if (pen_release == -1)
break;
udelay(10);
}
/*
* now the secondary core is starting up let it run its
* calibrations, then wait for it to finish
*/
spin_unlock(&boot_lock);
return pen_release != -1 ? -ENOSYS : 0;
}
/*
* Initialise the CPU possible map early - this describes the CPUs
* which may be present or become present in the system.
*/
void __init smp_init_cpus(void)
{
void __iomem *scu_base = scu_base_addr();
unsigned int i, ncores;
ncores = scu_base ? scu_get_core_count(scu_base) : 1;
/* sanity check */
if (ncores == 0) {
printk(KERN_ERR
"S5PV310: strange CM count of 0? Default to 1\n");
ncores = 1;
}
if (ncores > NR_CPUS) {
printk(KERN_WARNING
"S5PV310: no. of cores (%d) greater than configured "
"maximum of %d - clipping\n",
ncores, NR_CPUS);
ncores = NR_CPUS;
}
for (i = 0; i < ncores; i++)
set_cpu_possible(i, true);
}
void __init smp_prepare_cpus(unsigned int max_cpus)
{
unsigned int ncores = num_possible_cpus();
unsigned int cpu = smp_processor_id();
int i;
smp_store_cpu_info(cpu);
/* are we trying to boot more cores than exist? */
if (max_cpus > ncores)
max_cpus = ncores;
/*
* Initialise the present map, which describes the set of CPUs
* actually populated at the present time.
*/
for (i = 0; i < max_cpus; i++)
set_cpu_present(i, true);
/*
* Initialise the SCU if there are more than one CPU and let
* them know where to start.
*/
if (max_cpus > 1) {
/*
* Enable the local timer or broadcast device for the
* boot CPU, but only if we have more than one CPU.
*/
percpu_timer_setup();
scu_enable(scu_base_addr());
/*
* Write the address of secondary startup into the
* system-wide flags register. The boot monitor waits
* until it receives a soft interrupt, and then the
* secondary CPU branches to this address.
*/
__raw_writel(BSYM(virt_to_phys(s5pv310_secondary_startup)), S5P_INFORM0);
}
}

20
arch/arm/mach-s5pv310/setup-i2c0.c Normal file
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@ -0,0 +1,20 @@
/* linux/arch/arm/mach-s5pv210/setup-i2c0.c
*
* Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* I2C0 GPIO configuration.
*
* Based on plat-s3c64xx/setup-i2c0.c
*
* 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.
*/
struct platform_device; /* don't need the contents */
void s3c_i2c0_cfg_gpio(struct platform_device *dev)
{
/* will be implemented later */
}

12
arch/arm/plat-s5p/cpu.c
View file

@ -21,6 +21,7 @@
#include <plat/s5p6442.h>
#include <plat/s5pc100.h>
#include <plat/s5pv210.h>
#include <plat/s5pv310.h>
/* table of supported CPUs */
@ -28,6 +29,7 @@ static const char name_s5p6440[] = "S5P6440";
static const char name_s5p6442[] = "S5P6442";
static const char name_s5pc100[] = "S5PC100";
static const char name_s5pv210[] = "S5PV210/S5PC110";
static const char name_s5pv310[] = "S5PV310";
static struct cpu_table cpu_ids[] __initdata = {
{
@ -62,6 +64,14 @@ static struct cpu_table cpu_ids[] __initdata = {
.init_uarts = s5pv210_init_uarts,
.init = s5pv210_init,
.name = name_s5pv210,
}, {
.idcode = 0x43200000,
.idmask = 0xfffff000,
.map_io = s5pv310_map_io,
.init_clocks = s5pv310_init_clocks,
.init_uarts = s5pv310_init_uarts,
.init = s5pv310_init,
.name = name_s5pv310,
},
};
@ -83,6 +93,7 @@ static struct map_desc s5p_iodesc[] __initdata = {
.pfn = __phys_to_pfn(S3C_PA_UART),
.length = SZ_512K,
.type = MT_DEVICE,
#ifdef CONFIG_ARM_VIC
}, {
.virtual = (unsigned long)VA_VIC0,
.pfn = __phys_to_pfn(S5P_PA_VIC0),
@ -93,6 +104,7 @@ static struct map_desc s5p_iodesc[] __initdata = {
.pfn = __phys_to_pfn(S5P_PA_VIC1),
.length = SZ_16K,
.type = MT_DEVICE,
#endif
}, {
.virtual = (unsigned long)S3C_VA_TIMER,
.pfn = __phys_to_pfn(S5P_PA_TIMER),

12
arch/arm/plat-s5p/include/plat/map-s5p.h
View file

@ -18,6 +18,18 @@
#define S5P_VA_SYSTIMER S3C_ADDR(0x01200000)
#define S5P_VA_SROMC S3C_ADDR(0x01100000)
#define S5P_VA_COMBINER_BASE S3C_ADDR(0x00600000)
#define S5P_VA_COMBINER(x) (S5P_VA_COMBINER_BASE + ((x) >> 2) * 0x10)
#define S5P_VA_COREPERI_BASE S3C_ADDR(0x00800000)
#define S5P_VA_COREPERI(x) (S5P_VA_COREPERI_BASE + (x))
#define S5P_VA_SCU S5P_VA_COREPERI(0x0)
#define S5P_VA_GIC_CPU S5P_VA_COREPERI(0x100)
#define S5P_VA_TWD S5P_VA_COREPERI(0x600)
#define S5P_VA_GIC_DIST S5P_VA_COREPERI(0x1000)
#define S5P_VA_L2CC S3C_ADDR(0x00900000)
#define S5P_VA_UART(x) (S3C_VA_UART + ((x) * S3C_UART_OFFSET))
#define S5P_VA_UART0 S5P_VA_UART(0)
#define S5P_VA_UART1 S5P_VA_UART(1)

33
arch/arm/plat-s5p/include/plat/s5pv310.h Normal file
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@ -0,0 +1,33 @@
/* linux/arch/arm/plat-s5p/include/plat/s5pv310.h
*
* Copyright (c) 2010 Samsung Electronics Co., Ltd.
* http://www.samsung.com/
*
* Header file for s5pv310 cpu support
*
* 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.
*/
/* Common init code for S5PV310 related SoCs */
extern void s5pv310_common_init_uarts(struct s3c2410_uartcfg *cfg, int no);
extern void s5pv310_register_clocks(void);
extern void s5pv310_setup_clocks(void);
#ifdef CONFIG_CPU_S5PV310
extern int s5pv310_init(void);
extern void s5pv310_init_irq(void);
extern void s5pv310_map_io(void);
extern void s5pv310_init_clocks(int xtal);
#define s5pv310_init_uarts s5pv310_common_init_uarts
#else
#define s5pv310_init_clocks NULL
#define s5pv310_init_uarts NULL
#define s5pv310_map_io NULL
#define s5pv310_init NULL
#endif