mirror of https://gitee.com/openkylin/linux.git
ARM: S5PC100: CPU initialization
Signed-off-by: Byungho Min <bhmin@samsung.com> [ben-linux@fluff.org: subject fixup] Signed-off-by: Ben Dooks <ben-linux@fluff.org>
This commit is contained in:
Byungho Min
Ben Dooks
parent
433a915fc6
commit
8acd1ade2e
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/* linux/arch/arm/mach-s5pc100/cpu.c
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*
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* Copyright 2009 Samsung Electronics Co.
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* Byungho Min <bhmin@samsung.com>
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*
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* Based on mach-s3c6410/cpu.c
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/list.h>
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#include <linux/timer.h>
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#include <linux/init.h>
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#include <linux/clk.h>
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#include <linux/io.h>
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#include <linux/sysdev.h>
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#include <linux/serial_core.h>
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#include <linux/platform_device.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include <mach/hardware.h>
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#include <mach/map.h>
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#include <asm/irq.h>
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#include <plat/cpu-freq.h>
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#include <plat/regs-serial.h>
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#include <plat/cpu.h>
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#include <plat/devs.h>
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#include <plat/clock.h>
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#include <plat/sdhci.h>
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#include <plat/iic-core.h>
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#include <plat/s5pc100.h>
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/* Initial IO mappings */
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static struct map_desc s5pc100_iodesc[] __initdata = {
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};
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/* s5pc100_map_io
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*
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* register the standard cpu IO areas
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*/
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void __init s5pc100_map_io(void)
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{
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iotable_init(s5pc100_iodesc, ARRAY_SIZE(s5pc100_iodesc));
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/* initialise device information early */
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}
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void __init s5pc100_init_clocks(int xtal)
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{
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printk(KERN_DEBUG "%s: initialising clocks\n", __func__);
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s3c24xx_register_baseclocks(xtal);
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s5pc1xx_register_clocks();
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s5pc100_register_clocks();
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s5pc100_setup_clocks();
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}
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void __init s5pc100_init_irq(void)
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{
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u32 vic_valid[] = {~0, ~0, ~0};
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/* VIC0, VIC1, and VIC2 are fully populated. */
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s5pc1xx_init_irq(vic_valid, ARRAY_SIZE(vic_valid));
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}
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struct sysdev_class s5pc100_sysclass = {
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.name = "s5pc100-core",
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};
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static struct sys_device s5pc100_sysdev = {
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.cls = &s5pc100_sysclass,
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};
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static int __init s5pc100_core_init(void)
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{
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return sysdev_class_register(&s5pc100_sysclass);
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}
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core_initcall(s5pc100_core_init);
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int __init s5pc100_init(void)
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{
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printk(KERN_DEBUG "S5PC100: Initialising architecture\n");
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return sysdev_register(&s5pc100_sysdev);
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}
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@ -0,0 +1,38 @@
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/* arch/arm/mach-s5pc100/include/mach/debug-macro.S
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*
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* Copyright 2009 Samsung Electronics Co.
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* Byungho Min <bhmin@samsung.com>
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*
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*
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* Based on mach-s3c6400/include/mach/debug-macro.S
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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/* pull in the relevant register and map files. */
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#include <mach/map.h>
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#include <plat/regs-serial.h>
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/* note, for the boot process to work we have to keep the UART
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* virtual address aligned to an 1MiB boundary for the L1
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* mapping the head code makes. We keep the UART virtual address
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* aligned and add in the offset when we load the value here.
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*/
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.macro addruart, rx
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mrc p15, 0, \rx, c1, c0
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tst \rx, #1
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ldreq \rx, = S3C_PA_UART
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ldrne \rx, = (S3C_VA_UART + S3C_PA_UART & 0xfffff)
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add \rx, \rx, #(0x400 * CONFIG_DEBUG_S3C_UART)
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.endm
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/* include the reset of the code which will do the work, we're only
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* compiling for a single cpu processor type so the default of s3c2440
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* will be fine with us.
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*/
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#include <plat/debug-macro.S>
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/* arch/arm/mach-s5pc100/include/mach/entry-macro.S
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*
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* Copyright 2009 Samsung Electronics Co.
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* Byungho Min <bhmin@samsung.com>
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*
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* Based on mach-s3c6400/include/mach/entry-macro.S
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*
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* Low-level IRQ helper macros for the Samsung S5PC1XX series
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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 <asm/hardware/vic.h>
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#include <mach/map.h>
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#include <plat/irqs.h>
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.macro disable_fiq
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.endm
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.macro get_irqnr_preamble, base, tmp
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ldr \base, =S3C_VA_VIC0
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.endm
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.macro arch_ret_to_user, tmp1, tmp2
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.endm
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.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
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@ check the vic0
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mov \irqnr, # S3C_IRQ_OFFSET + 31
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ldr \irqstat, [ \base, # VIC_IRQ_STATUS ]
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teq \irqstat, #0
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@ otherwise try vic1
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addeq \tmp, \base, #(S3C_VA_VIC1 - S3C_VA_VIC0)
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addeq \irqnr, \irqnr, #32
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ldreq \irqstat, [ \tmp, # VIC_IRQ_STATUS ]
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teqeq \irqstat, #0
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@ otherwise try vic2
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addeq \tmp, \base, #(S3C_VA_VIC2 - S3C_VA_VIC0)
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addeq \irqnr, \irqnr, #32
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ldreq \irqstat, [ \tmp, # VIC_IRQ_STATUS ]
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teqeq \irqstat, #0
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clzne \irqstat, \irqstat
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subne \irqnr, \irqnr, \irqstat
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.endm
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@ -0,0 +1,14 @@
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/* linux/arch/arm/mach-s5pc100/include/mach/hardware.h
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*
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* Copyright 2009 Samsung Electronics Co.
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* Byungho Min <bhmin@samsung.com>
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*
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* S3C6400 - Hardware support
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*/
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#ifndef __ASM_ARCH_HARDWARE_H
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#define __ASM_ARCH_HARDWARE_H __FILE__
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/* currently nothing here, placeholder */
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#endif /* __ASM_ARCH_HARDWARE_H */
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/* linux/arch/arm/mach-s5pc100/include/mach/system.h
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*
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* Copyright 2009 Samsung Electronics Co.
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* Byungho Min <bhmin@samsung.com>
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*
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* S5PC1XX - system implementation
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*
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* Based on mach-s3c6400/include/mach/system.h
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*/
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#ifndef __ASM_ARCH_SYSTEM_H
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#define __ASM_ARCH_SYSTEM_H __FILE__
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static void arch_idle(void)
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{
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/* nothing here yet */
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}
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static void arch_reset(char mode, const char *cmd)
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{
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/* nothing here yet */
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}
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#endif /* __ASM_ARCH_IRQ_H */
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/* arch/arm/mach-s5pc100/include/mach/uncompress.h
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*
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* Copyright 2009 Samsung Electronics Co.
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* Byungho Min <bhmin@samsung.com>
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*
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* S5PC100 - uncompress code
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*
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* Based on mach-s3c6400/include/mach/uncompress.h
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __ASM_ARCH_UNCOMPRESS_H
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#define __ASM_ARCH_UNCOMPRESS_H
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#include <mach/map.h>
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#include <plat/uncompress.h>
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static void arch_detect_cpu(void)
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{
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/* we do not need to do any cpu detection here at the moment. */
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fifo_mask = S3C2440_UFSTAT_TXMASK;
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fifo_max = 63 << S3C2440_UFSTAT_TXSHIFT;
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}
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#endif /* __ASM_ARCH_UNCOMPRESS_H */
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/* linux/arch/arm/plat-s5pc1xx/cpu.c
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*
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* Copyright 2009 Samsung Electronics Co.
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* Byungho Min <bhmin@samsung.com>
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*
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* S5PC1XX CPU Support
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*
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* Based on plat-s3c64xx/cpu.c
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/interrupt.h>
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#include <linux/ioport.h>
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#include <linux/serial_core.h>
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#include <linux/platform_device.h>
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#include <linux/io.h>
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#include <mach/hardware.h>
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#include <mach/map.h>
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#include <asm/mach/map.h>
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#include <plat/regs-serial.h>
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#include <plat/cpu.h>
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#include <plat/devs.h>
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#include <plat/clock.h>
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#include <plat/s5pc100.h>
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/* table of supported CPUs */
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static const char name_s5pc100[] = "S5PC100";
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static struct cpu_table cpu_ids[] __initdata = {
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{
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.idcode = 0x43100000,
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.idmask = 0xfffff000,
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.map_io = s5pc100_map_io,
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.init_clocks = s5pc100_init_clocks,
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.init_uarts = s5pc100_init_uarts,
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.init = s5pc100_init,
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.name = name_s5pc100,
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},
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};
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/* minimal IO mapping */
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/* see notes on uart map in arch/arm/mach-s5pc100/include/mach/debug-macro.S */
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#define UART_OFFS (S3C_PA_UART & 0xffff)
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static struct map_desc s5pc1xx_iodesc[] __initdata = {
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{
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.virtual = (unsigned long)S5PC1XX_VA_CHIPID,
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.pfn = __phys_to_pfn(S5PC1XX_PA_CHIPID),
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.length = SZ_16,
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.type = MT_DEVICE,
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}, {
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.virtual = (unsigned long)S5PC1XX_VA_CLK,
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.pfn = __phys_to_pfn(S5PC1XX_PA_CLK),
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.length = SZ_4K,
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.type = MT_DEVICE,
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}, {
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.virtual = (unsigned long)S5PC1XX_VA_PWR,
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.pfn = __phys_to_pfn(S5PC1XX_PA_PWR),
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.length = SZ_4K,
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.type = MT_DEVICE,
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}, {
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.virtual = (unsigned long)(S5PC1XX_VA_UART),
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.pfn = __phys_to_pfn(S5PC1XX_PA_UART),
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.length = SZ_4K,
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.type = MT_DEVICE,
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}, {
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.virtual = (unsigned long)S5PC1XX_VA_VIC(0),
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.pfn = __phys_to_pfn(S5PC1XX_PA_VIC(0)),
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.length = SZ_4K,
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.type = MT_DEVICE,
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}, {
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.virtual = (unsigned long)S5PC1XX_VA_VIC(1),
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.pfn = __phys_to_pfn(S5PC1XX_PA_VIC(1)),
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.length = SZ_4K,
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.type = MT_DEVICE,
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}, {
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.virtual = (unsigned long)S5PC1XX_VA_VIC(2),
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.pfn = __phys_to_pfn(S5PC1XX_PA_VIC(2)),
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.length = SZ_4K,
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.type = MT_DEVICE,
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}, {
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.virtual = (unsigned long)S5PC1XX_VA_TIMER,
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.pfn = __phys_to_pfn(S5PC1XX_PA_TIMER),
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.length = SZ_256,
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.type = MT_DEVICE,
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},
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};
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/* read cpu identification code */
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void __init s5pc1xx_init_io(struct map_desc *mach_desc, int size)
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{
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unsigned long idcode;
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/* initialise the io descriptors we need for initialisation */
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iotable_init(s5pc1xx_iodesc, ARRAY_SIZE(s5pc1xx_iodesc));
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iotable_init(mach_desc, size);
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idcode = __raw_readl(S5PC1XX_VA_CHIPID);
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s3c_init_cpu(idcode, cpu_ids, ARRAY_SIZE(cpu_ids));
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}
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/* arch/arm/plat-s5pc1xx/include/plat/s5pc100.h
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*
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* Copyright 2009 Samsung Electronics Co.
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* Byungho Min <bhmin@samsung.com>
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*
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* Header file for s5pc100 cpu support
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*
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* Based on plat-s3c64xx/include/plat/s3c6400.h
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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/* Common init code for S5PC100 related SoCs */
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extern int s5pc100_init(void);
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extern void s5pc100_map_io(void);
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extern void s5pc100_init_clocks(int xtal);
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extern int s5pc100_register_baseclocks(unsigned long xtal);
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extern void s5pc100_init_irq(void);
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extern void s5pc100_init_io(struct map_desc *mach_desc, int size);
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extern void s5pc100_common_init_uarts(struct s3c2410_uartcfg *cfg, int no);
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extern void s5pc100_register_clocks(void);
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extern void s5pc100_setup_clocks(void);
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extern struct sysdev_class s5pc100_sysclass;
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#define s5pc100_init_uarts s5pc100_common_init_uarts
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/* Some day, belows will be moved to plat-s5pc/include/plat/cpu.h */
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extern void s5pc1xx_init_irq(u32 *vic_valid, int num);
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extern void s5pc1xx_init_io(struct map_desc *mach_desc, int size);
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/* Some day, belows will be moved to plat-s5pc/include/plat/clock.h */
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extern struct clk clk_hpll;
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extern struct clk clk_hd0;
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extern struct clk clk_pd0;
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extern struct clk clk_54m;
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extern struct clk clk_dout_mpll2;
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extern void s5pc1xx_register_clocks(void);
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extern int s5pc1xx_sclk0_ctrl(struct clk *clk, int enable);
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extern int s5pc1xx_sclk1_ctrl(struct clk *clk, int enable);
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/* Some day, belows will be moved to plat-s5pc/include/plat/devs.h */
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extern struct s3c24xx_uart_resources s5pc1xx_uart_resources[];
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extern struct platform_device s3c_device_g2d;
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extern struct platform_device s3c_device_g3d;
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extern struct platform_device s3c_device_vpp;
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extern struct platform_device s3c_device_tvenc;
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extern struct platform_device s3c_device_tvscaler;
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extern struct platform_device s3c_device_rotator;
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extern struct platform_device s3c_device_jpeg;
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extern struct platform_device s3c_device_onenand;
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extern struct platform_device s3c_device_usb_otghcd;
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extern struct platform_device s3c_device_keypad;
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extern struct platform_device s3c_device_ts;
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extern struct platform_device s3c_device_g3d;
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extern struct platform_device s3c_device_smc911x;
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extern struct platform_device s3c_device_fimc0;
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extern struct platform_device s3c_device_fimc1;
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extern struct platform_device s3c_device_mfc;
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extern struct platform_device s3c_device_ac97;
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extern struct platform_device s3c_device_fimc0;
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extern struct platform_device s3c_device_fimc1;
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extern struct platform_device s3c_device_fimc2;
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@ -0,0 +1,27 @@
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/* linux/arch/arm/plat-s5pc1xx/s5pc100-init.c
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*
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* Copyright 2009 Samsung Electronics Co.
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* Byungho Min <bhmin@samsung.com>
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*
|
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* 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);
|
||||
}
|
||||
Loading…
Reference in New Issue