Commit 8acd1ade authored by Byungho Min's avatar Byungho Min Committed by Ben Dooks

ARM: S5PC100: CPU initialization

Signed-off-by: default avatarByungho Min <bhmin@samsung.com>
[ben-linux@fluff.org: subject fixup]
Signed-off-by: default avatarBen Dooks <ben-linux@fluff.org>
parent 433a915f
/* linux/arch/arm/mach-s5pc100/cpu.c
*
* Copyright 2009 Samsung Electronics Co.
* Byungho Min <bhmin@samsung.com>
*
* Based on mach-s3c6410/cpu.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.
*/
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/list.h>
#include <linux/timer.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/sysdev.h>
#include <linux/serial_core.h>
#include <linux/platform_device.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/irq.h>
#include <mach/hardware.h>
#include <mach/map.h>
#include <asm/irq.h>
#include <plat/cpu-freq.h>
#include <plat/regs-serial.h>
#include <plat/cpu.h>
#include <plat/devs.h>
#include <plat/clock.h>
#include <plat/sdhci.h>
#include <plat/iic-core.h>
#include <plat/s5pc100.h>
/* Initial IO mappings */
static struct map_desc s5pc100_iodesc[] __initdata = {
};
/* s5pc100_map_io
*
* register the standard cpu IO areas
*/
void __init s5pc100_map_io(void)
{
iotable_init(s5pc100_iodesc, ARRAY_SIZE(s5pc100_iodesc));
/* initialise device information early */
}
void __init s5pc100_init_clocks(int xtal)
{
printk(KERN_DEBUG "%s: initialising clocks\n", __func__);
s3c24xx_register_baseclocks(xtal);
s5pc1xx_register_clocks();
s5pc100_register_clocks();
s5pc100_setup_clocks();
}
void __init s5pc100_init_irq(void)
{
u32 vic_valid[] = {~0, ~0, ~0};
/* VIC0, VIC1, and VIC2 are fully populated. */
s5pc1xx_init_irq(vic_valid, ARRAY_SIZE(vic_valid));
}
struct sysdev_class s5pc100_sysclass = {
.name = "s5pc100-core",
};
static struct sys_device s5pc100_sysdev = {
.cls = &s5pc100_sysclass,
};
static int __init s5pc100_core_init(void)
{
return sysdev_class_register(&s5pc100_sysclass);
}
core_initcall(s5pc100_core_init);
int __init s5pc100_init(void)
{
printk(KERN_DEBUG "S5PC100: Initialising architecture\n");
return sysdev_register(&s5pc100_sysdev);
}
/* arch/arm/mach-s5pc100/include/mach/debug-macro.S
*
* Copyright 2009 Samsung Electronics Co.
* Byungho Min <bhmin@samsung.com>
*
*
* Based on 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>
#include <plat/regs-serial.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
mrc p15, 0, \rx, c1, c0
tst \rx, #1
ldreq \rx, = S3C_PA_UART
ldrne \rx, = (S3C_VA_UART + S3C_PA_UART & 0xfffff)
add \rx, \rx, #(0x400 * CONFIG_DEBUG_S3C_UART)
.endm
/* include the reset of the code which will do the work, we're only
* compiling for a single cpu processor type so the default of s3c2440
* will be fine with us.
*/
#include <plat/debug-macro.S>
/* arch/arm/mach-s5pc100/include/mach/entry-macro.S
*
* Copyright 2009 Samsung Electronics Co.
* Byungho Min <bhmin@samsung.com>
*
* Based on mach-s3c6400/include/mach/entry-macro.S
*
* Low-level IRQ helper macros for the Samsung S5PC1XX series
*
* 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 <asm/hardware/vic.h>
#include <mach/map.h>
#include <plat/irqs.h>
.macro disable_fiq
.endm
.macro get_irqnr_preamble, base, tmp
ldr \base, =S3C_VA_VIC0
.endm
.macro arch_ret_to_user, tmp1, tmp2
.endm
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
@ check the vic0
mov \irqnr, # S3C_IRQ_OFFSET + 31
ldr \irqstat, [ \base, # VIC_IRQ_STATUS ]
teq \irqstat, #0
@ otherwise try vic1
addeq \tmp, \base, #(S3C_VA_VIC1 - S3C_VA_VIC0)
addeq \irqnr, \irqnr, #32
ldreq \irqstat, [ \tmp, # VIC_IRQ_STATUS ]
teqeq \irqstat, #0
@ otherwise try vic2
addeq \tmp, \base, #(S3C_VA_VIC2 - S3C_VA_VIC0)
addeq \irqnr, \irqnr, #32
ldreq \irqstat, [ \tmp, # VIC_IRQ_STATUS ]
teqeq \irqstat, #0
clzne \irqstat, \irqstat
subne \irqnr, \irqnr, \irqstat
.endm
/* linux/arch/arm/mach-s5pc100/include/mach/hardware.h
*
* Copyright 2009 Samsung Electronics Co.
* Byungho Min <bhmin@samsung.com>
*
* S3C6400 - Hardware support
*/
#ifndef __ASM_ARCH_HARDWARE_H
#define __ASM_ARCH_HARDWARE_H __FILE__
/* currently nothing here, placeholder */
#endif /* __ASM_ARCH_HARDWARE_H */
/* linux/arch/arm/mach-s5pc100/include/mach/system.h
*
* Copyright 2009 Samsung Electronics Co.
* Byungho Min <bhmin@samsung.com>
*
* S5PC1XX - system implementation
*
* Based on mach-s3c6400/include/mach/system.h
*/
#ifndef __ASM_ARCH_SYSTEM_H
#define __ASM_ARCH_SYSTEM_H __FILE__
static void arch_idle(void)
{
/* nothing here yet */
}
static void arch_reset(char mode, const char *cmd)
{
/* nothing here yet */
}
#endif /* __ASM_ARCH_IRQ_H */
/* arch/arm/mach-s5pc100/include/mach/uncompress.h
*
* Copyright 2009 Samsung Electronics Co.
* Byungho Min <bhmin@samsung.com>
*
* S5PC100 - uncompress code
*
* Based on mach-s3c6400/include/mach/uncompress.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.
*/
#ifndef __ASM_ARCH_UNCOMPRESS_H
#define __ASM_ARCH_UNCOMPRESS_H
#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. */
fifo_mask = S3C2440_UFSTAT_TXMASK;
fifo_max = 63 << S3C2440_UFSTAT_TXSHIFT;
}
#endif /* __ASM_ARCH_UNCOMPRESS_H */
/* linux/arch/arm/plat-s5pc1xx/cpu.c
*
* Copyright 2009 Samsung Electronics Co.
* Byungho Min <bhmin@samsung.com>
*
* S5PC1XX CPU Support
*
* Based on plat-s3c64xx/cpu.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.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/ioport.h>
#include <linux/serial_core.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <mach/hardware.h>
#include <mach/map.h>
#include <asm/mach/map.h>
#include <plat/regs-serial.h>
#include <plat/cpu.h>
#include <plat/devs.h>
#include <plat/clock.h>
#include <plat/s5pc100.h>
/* table of supported CPUs */
static const char name_s5pc100[] = "S5PC100";
static struct cpu_table cpu_ids[] __initdata = {
{
.idcode = 0x43100000,
.idmask = 0xfffff000,
.map_io = s5pc100_map_io,
.init_clocks = s5pc100_init_clocks,
.init_uarts = s5pc100_init_uarts,
.init = s5pc100_init,
.name = name_s5pc100,
},
};
/* minimal IO mapping */
/* see notes on uart map in arch/arm/mach-s5pc100/include/mach/debug-macro.S */
#define UART_OFFS (S3C_PA_UART & 0xffff)
static struct map_desc s5pc1xx_iodesc[] __initdata = {
{
.virtual = (unsigned long)S5PC1XX_VA_CHIPID,
.pfn = __phys_to_pfn(S5PC1XX_PA_CHIPID),
.length = SZ_16,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5PC1XX_VA_CLK,
.pfn = __phys_to_pfn(S5PC1XX_PA_CLK),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5PC1XX_VA_PWR,
.pfn = __phys_to_pfn(S5PC1XX_PA_PWR),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)(S5PC1XX_VA_UART),
.pfn = __phys_to_pfn(S5PC1XX_PA_UART),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5PC1XX_VA_VIC(0),
.pfn = __phys_to_pfn(S5PC1XX_PA_VIC(0)),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5PC1XX_VA_VIC(1),
.pfn = __phys_to_pfn(S5PC1XX_PA_VIC(1)),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5PC1XX_VA_VIC(2),
.pfn = __phys_to_pfn(S5PC1XX_PA_VIC(2)),
.length = SZ_4K,
.type = MT_DEVICE,
}, {
.virtual = (unsigned long)S5PC1XX_VA_TIMER,
.pfn = __phys_to_pfn(S5PC1XX_PA_TIMER),
.length = SZ_256,
.type = MT_DEVICE,
},
};
/* read cpu identification code */
void __init s5pc1xx_init_io(struct map_desc *mach_desc, int size)
{
unsigned long idcode;
/* initialise the io descriptors we need for initialisation */
iotable_init(s5pc1xx_iodesc, ARRAY_SIZE(s5pc1xx_iodesc));
iotable_init(mach_desc, size);
idcode = __raw_readl(S5PC1XX_VA_CHIPID);
s3c_init_cpu(idcode, cpu_ids, ARRAY_SIZE(cpu_ids));
}
/* arch/arm/plat-s5pc1xx/include/plat/s5pc100.h
*
* Copyright 2009 Samsung Electronics Co.
* Byungho Min <bhmin@samsung.com>
*
* Header file for s5pc100 cpu support
*
* Based on plat-s3c64xx/include/plat/s3c6400.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.
*/
/* Common init code for S5PC100 related SoCs */
extern int s5pc100_init(void);
extern void s5pc100_map_io(void);
extern void s5pc100_init_clocks(int xtal);
extern int s5pc100_register_baseclocks(unsigned long xtal);
extern void s5pc100_init_irq(void);
extern void s5pc100_init_io(struct map_desc *mach_desc, int size);
extern void s5pc100_common_init_uarts(struct s3c2410_uartcfg *cfg, int no);
extern void s5pc100_register_clocks(void);
extern void s5pc100_setup_clocks(void);
extern struct sysdev_class s5pc100_sysclass;
#define s5pc100_init_uarts s5pc100_common_init_uarts
/* Some day, belows will be moved to plat-s5pc/include/plat/cpu.h */
extern void s5pc1xx_init_irq(u32 *vic_valid, int num);
extern void s5pc1xx_init_io(struct map_desc *mach_desc, int size);
/* Some day, belows will be moved to plat-s5pc/include/plat/clock.h */
extern struct clk clk_hpll;
extern struct clk clk_hd0;
extern struct clk clk_pd0;
extern struct clk clk_54m;
extern struct clk clk_dout_mpll2;
extern void s5pc1xx_register_clocks(void);
extern int s5pc1xx_sclk0_ctrl(struct clk *clk, int enable);
extern int s5pc1xx_sclk1_ctrl(struct clk *clk, int enable);
/* Some day, belows will be moved to plat-s5pc/include/plat/devs.h */
extern struct s3c24xx_uart_resources s5pc1xx_uart_resources[];
extern struct platform_device s3c_device_g2d;
extern struct platform_device s3c_device_g3d;
extern struct platform_device s3c_device_vpp;
extern struct platform_device s3c_device_tvenc;
extern struct platform_device s3c_device_tvscaler;
extern struct platform_device s3c_device_rotator;
extern struct platform_device s3c_device_jpeg;
extern struct platform_device s3c_device_onenand;
extern struct platform_device s3c_device_usb_otghcd;
extern struct platform_device s3c_device_keypad;
extern struct platform_device s3c_device_ts;
extern struct platform_device s3c_device_g3d;
extern struct platform_device s3c_device_smc911x;
extern struct platform_device s3c_device_fimc0;
extern struct platform_device s3c_device_fimc1;
extern struct platform_device s3c_device_mfc;
extern struct platform_device s3c_device_ac97;
extern struct platform_device s3c_device_fimc0;
extern struct platform_device s3c_device_fimc1;
extern struct platform_device s3c_device_fimc2;
/* linux/arch/arm/plat-s5pc1xx/s5pc100-init.c
*
* Copyright 2009 Samsung Electronics Co.
* Byungho Min <bhmin@samsung.com>
*
* S5PC100 - CPU initialisation (common with other S5PC1XX chips)
*
* 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/kernel.h>
#include <linux/types.h>
#include <linux/init.h>
#include <plat/cpu.h>
#include <plat/devs.h>
#include <plat/s5pc100.h>
/* uart registration process */
void __init s5pc100_common_init_uarts(struct s3c2410_uartcfg *cfg, int no)
{
/* The driver name is s3c6400-uart to reuse s3c6400_serial_drv */
s3c24xx_init_uartdevs("s3c6400-uart", s5pc1xx_uart_resources, cfg, no);
}
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