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 ++++++ arch/arm/plat-s5pc1xx/cpu.c | 112 +++++++++++++++++++++++ arch/arm/plat-s5pc1xx/include/plat/s5pc100.h | 65 +++++++++++++ arch/arm/plat-s5pc1xx/s5pc100-init.c | 27 ++++++ 9 files changed, 455 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 create mode 100644 arch/arm/plat-s5pc1xx/cpu.c create mode 100644 arch/arm/plat-s5pc1xx/include/plat/s5pc100.h create mode 100644 arch/arm/plat-s5pc1xx/s5pc100-init.c diff --git a/arch/arm/mach-s5pc100/cpu.c b/arch/arm/mach-s5pc100/cpu.c new file mode 100644 index 00000000000..0e718890da3 --- /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 00000000000..9d142ccf654 --- /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 00000000000..67131939e62 --- /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 00000000000..38ce8206a1a --- /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 00000000000..e3901437547 --- /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 00000000000..01ccf535e76 --- /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 */ diff --git a/arch/arm/plat-s5pc1xx/cpu.c b/arch/arm/plat-s5pc1xx/cpu.c new file mode 100644 index 00000000000..715a7330794 --- /dev/null +++ b/arch/arm/plat-s5pc1xx/cpu.c @@ -0,0 +1,112 @@ +/* linux/arch/arm/plat-s5pc1xx/cpu.c + * + * Copyright 2009 Samsung Electronics Co. + * Byungho Min + * + * 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 +#include +#include +#include +#include +#include +#include + +#include +#include + +#include + +#include + +#include +#include +#include + +#include + +/* 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)); +} diff --git a/arch/arm/plat-s5pc1xx/include/plat/s5pc100.h b/arch/arm/plat-s5pc1xx/include/plat/s5pc100.h new file mode 100644 index 00000000000..45e27513166 --- /dev/null +++ b/arch/arm/plat-s5pc1xx/include/plat/s5pc100.h @@ -0,0 +1,65 @@ +/* arch/arm/plat-s5pc1xx/include/plat/s5pc100.h + * + * Copyright 2009 Samsung Electronics Co. + * Byungho Min + * + * 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; + diff --git a/arch/arm/plat-s5pc1xx/s5pc100-init.c b/arch/arm/plat-s5pc1xx/s5pc100-init.c new file mode 100644 index 00000000000..c58710884ce --- /dev/null +++ b/arch/arm/plat-s5pc1xx/s5pc100-init.c @@ -0,0 +1,27 @@ +/* linux/arch/arm/plat-s5pc1xx/s5pc100-init.c + * + * Copyright 2009 Samsung Electronics Co. + * Byungho Min + * + * 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 +#include +#include + +#include +#include +#include + +/* 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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