From 8acd1ade2ede18408303c968e1449220c427a182 Mon Sep 17 00:00:00 2001 From: Byungho Min Date: Tue, 23 Jun 2009 21:40:15 +0900 Subject: ARM: S5PC100: CPU initialization Signed-off-by: Byungho Min [ben-linux@fluff.org: subject fixup] Signed-off-by: Ben Dooks --- arch/arm/mach-s5pc100/cpu.c | 97 ++++++++++++++++++++++++ arch/arm/mach-s5pc100/include/mach/debug-macro.S | 38 ++++++++++ arch/arm/mach-s5pc100/include/mach/entry-macro.S | 50 ++++++++++++ arch/arm/mach-s5pc100/include/mach/hardware.h | 14 ++++ arch/arm/mach-s5pc100/include/mach/system.h | 24 ++++++ arch/arm/mach-s5pc100/include/mach/uncompress.h | 28 +++++++ 6 files changed, 251 insertions(+) create mode 100644 arch/arm/mach-s5pc100/cpu.c create mode 100644 arch/arm/mach-s5pc100/include/mach/debug-macro.S create mode 100644 arch/arm/mach-s5pc100/include/mach/entry-macro.S create mode 100644 arch/arm/mach-s5pc100/include/mach/hardware.h create mode 100644 arch/arm/mach-s5pc100/include/mach/system.h create mode 100644 arch/arm/mach-s5pc100/include/mach/uncompress.h (limited to 'arch/arm/mach-s5pc100') diff --git a/arch/arm/mach-s5pc100/cpu.c b/arch/arm/mach-s5pc100/cpu.c new file mode 100644 index 000000000000..0e718890da32 --- /dev/null +++ b/arch/arm/mach-s5pc100/cpu.c @@ -0,0 +1,97 @@ +/* linux/arch/arm/mach-s5pc100/cpu.c + * + * Copyright 2009 Samsung Electronics Co. + * Byungho Min + * + * 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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +#include +#include +#include + +#include +#include + +#include +#include +#include +#include +#include +#include + +/* 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); +} diff --git a/arch/arm/mach-s5pc100/include/mach/debug-macro.S b/arch/arm/mach-s5pc100/include/mach/debug-macro.S new file mode 100644 index 000000000000..9d142ccf654b --- /dev/null +++ b/arch/arm/mach-s5pc100/include/mach/debug-macro.S @@ -0,0 +1,38 @@ +/* arch/arm/mach-s5pc100/include/mach/debug-macro.S + * + * Copyright 2009 Samsung Electronics Co. + * Byungho Min + * + * + * 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 +#include + + /* 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 diff --git a/arch/arm/mach-s5pc100/include/mach/entry-macro.S b/arch/arm/mach-s5pc100/include/mach/entry-macro.S new file mode 100644 index 000000000000..67131939e626 --- /dev/null +++ b/arch/arm/mach-s5pc100/include/mach/entry-macro.S @@ -0,0 +1,50 @@ +/* arch/arm/mach-s5pc100/include/mach/entry-macro.S + * + * Copyright 2009 Samsung Electronics Co. + * Byungho Min + * + * 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 +#include +#include + + .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 diff --git a/arch/arm/mach-s5pc100/include/mach/hardware.h b/arch/arm/mach-s5pc100/include/mach/hardware.h new file mode 100644 index 000000000000..38ce8206a1a6 --- /dev/null +++ b/arch/arm/mach-s5pc100/include/mach/hardware.h @@ -0,0 +1,14 @@ +/* linux/arch/arm/mach-s5pc100/include/mach/hardware.h + * + * Copyright 2009 Samsung Electronics Co. + * Byungho Min + * + * S3C6400 - Hardware support + */ + +#ifndef __ASM_ARCH_HARDWARE_H +#define __ASM_ARCH_HARDWARE_H __FILE__ + +/* currently nothing here, placeholder */ + +#endif /* __ASM_ARCH_HARDWARE_H */ diff --git a/arch/arm/mach-s5pc100/include/mach/system.h b/arch/arm/mach-s5pc100/include/mach/system.h new file mode 100644 index 000000000000..e39014375470 --- /dev/null +++ b/arch/arm/mach-s5pc100/include/mach/system.h @@ -0,0 +1,24 @@ +/* linux/arch/arm/mach-s5pc100/include/mach/system.h + * + * Copyright 2009 Samsung Electronics Co. + * Byungho Min + * + * 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 */ diff --git a/arch/arm/mach-s5pc100/include/mach/uncompress.h b/arch/arm/mach-s5pc100/include/mach/uncompress.h new file mode 100644 index 000000000000..01ccf535e76c --- /dev/null +++ b/arch/arm/mach-s5pc100/include/mach/uncompress.h @@ -0,0 +1,28 @@ +/* arch/arm/mach-s5pc100/include/mach/uncompress.h + * + * Copyright 2009 Samsung Electronics Co. + * Byungho Min + * + * 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 +#include + +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 */ -- cgit v1.2.1