From 2b12b5c4ff9e0f1c5f4e5d5bde57b919fe522df2 Mon Sep 17 00:00:00 2001 From: Changhwan Youn Date: Mon, 26 Jul 2010 21:08:52 +0900 Subject: ARM: S5PV310: Add new CPU initialization support This patch adds Samsung S5PV310/S5PC210 CPU support. The S5PV310/S5PC210 integrates a ARM Cortex A9 multi-core. Signed-off-by: Changhwan Youn Signed-off-by: Jongpill Lee Signed-off-by: Jiseong Oh [kgene.kim@samsung.com: fix build errors] Signed-off-by: Kukjin Kim --- arch/arm/mach-s5pv310/cpu.c | 122 ++++++++++++++ arch/arm/mach-s5pv310/headsmp.S | 41 +++++ arch/arm/mach-s5pv310/include/mach/debug-macro.S | 36 +++++ arch/arm/mach-s5pv310/include/mach/entry-macro.S | 84 ++++++++++ arch/arm/mach-s5pv310/include/mach/gpio.h | 135 ++++++++++++++++ arch/arm/mach-s5pv310/include/mach/hardware.h | 18 +++ arch/arm/mach-s5pv310/include/mach/io.h | 26 +++ arch/arm/mach-s5pv310/include/mach/map.h | 69 ++++++++ arch/arm/mach-s5pv310/include/mach/memory.h | 22 +++ arch/arm/mach-s5pv310/include/mach/smp.h | 29 ++++ arch/arm/mach-s5pv310/include/mach/system.h | 22 +++ arch/arm/mach-s5pv310/include/mach/timex.h | 29 ++++ arch/arm/mach-s5pv310/include/mach/uncompress.h | 30 ++++ arch/arm/mach-s5pv310/include/mach/vmalloc.h | 22 +++ arch/arm/mach-s5pv310/init.c | 41 +++++ arch/arm/mach-s5pv310/platsmp.c | 192 +++++++++++++++++++++++ arch/arm/mach-s5pv310/setup-i2c0.c | 20 +++ 17 files changed, 938 insertions(+) create mode 100644 arch/arm/mach-s5pv310/cpu.c create mode 100644 arch/arm/mach-s5pv310/headsmp.S create mode 100644 arch/arm/mach-s5pv310/include/mach/debug-macro.S create mode 100644 arch/arm/mach-s5pv310/include/mach/entry-macro.S create mode 100644 arch/arm/mach-s5pv310/include/mach/gpio.h create mode 100644 arch/arm/mach-s5pv310/include/mach/hardware.h create mode 100644 arch/arm/mach-s5pv310/include/mach/io.h create mode 100644 arch/arm/mach-s5pv310/include/mach/map.h create mode 100644 arch/arm/mach-s5pv310/include/mach/memory.h create mode 100644 arch/arm/mach-s5pv310/include/mach/smp.h create mode 100644 arch/arm/mach-s5pv310/include/mach/system.h create mode 100644 arch/arm/mach-s5pv310/include/mach/timex.h create mode 100644 arch/arm/mach-s5pv310/include/mach/uncompress.h create mode 100644 arch/arm/mach-s5pv310/include/mach/vmalloc.h create mode 100644 arch/arm/mach-s5pv310/init.c create mode 100644 arch/arm/mach-s5pv310/platsmp.c create mode 100644 arch/arm/mach-s5pv310/setup-i2c0.c (limited to 'arch/arm/mach-s5pv310') diff --git a/arch/arm/mach-s5pv310/cpu.c b/arch/arm/mach-s5pv310/cpu.c new file mode 100644 index 000000000000..196c9f12ed85 --- /dev/null +++ b/arch/arm/mach-s5pv310/cpu.c @@ -0,0 +1,122 @@ +/* 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 +#include + +#include +#include + +#include + +#include +#include +#include + +#include + +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); +} diff --git a/arch/arm/mach-s5pv310/headsmp.S b/arch/arm/mach-s5pv310/headsmp.S new file mode 100644 index 000000000000..164b7b045713 --- /dev/null +++ b/arch/arm/mach-s5pv310/headsmp.S @@ -0,0 +1,41 @@ +/* + * 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 +#include + + __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 diff --git a/arch/arm/mach-s5pv310/include/mach/debug-macro.S b/arch/arm/mach-s5pv310/include/mach/debug-macro.S new file mode 100644 index 000000000000..6fb3893486be --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/debug-macro.S @@ -0,0 +1,36 @@ +/* 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 + + /* 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 diff --git a/arch/arm/mach-s5pv310/include/mach/entry-macro.S b/arch/arm/mach-s5pv310/include/mach/entry-macro.S new file mode 100644 index 000000000000..e600e1d522df --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/entry-macro.S @@ -0,0 +1,84 @@ +/* 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 +#include + + .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 diff --git a/arch/arm/mach-s5pv310/include/mach/gpio.h b/arch/arm/mach-s5pv310/include/mach/gpio.h new file mode 100644 index 000000000000..20cb80c23466 --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/gpio.h @@ -0,0 +1,135 @@ +/* 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 + +#endif /* __ASM_ARCH_GPIO_H */ diff --git a/arch/arm/mach-s5pv310/include/mach/hardware.h b/arch/arm/mach-s5pv310/include/mach/hardware.h new file mode 100644 index 000000000000..28ff9881f1a6 --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/hardware.h @@ -0,0 +1,18 @@ +/* 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 */ diff --git a/arch/arm/mach-s5pv310/include/mach/io.h b/arch/arm/mach-s5pv310/include/mach/io.h new file mode 100644 index 000000000000..8a7f9128391f --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/io.h @@ -0,0 +1,26 @@ +/* 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 + * + * 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 */ diff --git a/arch/arm/mach-s5pv310/include/mach/map.h b/arch/arm/mach-s5pv310/include/mach/map.h new file mode 100644 index 000000000000..87697c9fca5b --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/map.h @@ -0,0 +1,69 @@ +/* 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 + +/* + * 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 + +#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 */ diff --git a/arch/arm/mach-s5pv310/include/mach/memory.h b/arch/arm/mach-s5pv310/include/mach/memory.h new file mode 100644 index 000000000000..1dffb4823245 --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/memory.h @@ -0,0 +1,22 @@ +/* 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 */ diff --git a/arch/arm/mach-s5pv310/include/mach/smp.h b/arch/arm/mach-s5pv310/include/mach/smp.h new file mode 100644 index 000000000000..990f3ba88a1f --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/smp.h @@ -0,0 +1,29 @@ +/* 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 + +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 diff --git a/arch/arm/mach-s5pv310/include/mach/system.h b/arch/arm/mach-s5pv310/include/mach/system.h new file mode 100644 index 000000000000..d10c009cf0f1 --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/system.h @@ -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 + +static void arch_idle(void) +{ + /* nothing here yet */ +} +#endif /* __ASM_ARCH_SYSTEM_H */ diff --git a/arch/arm/mach-s5pv310/include/mach/timex.h b/arch/arm/mach-s5pv310/include/mach/timex.h new file mode 100644 index 000000000000..bd2359b952b4 --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/timex.h @@ -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 + * + * 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 */ diff --git a/arch/arm/mach-s5pv310/include/mach/uncompress.h b/arch/arm/mach-s5pv310/include/mach/uncompress.h new file mode 100644 index 000000000000..59593c1e2416 --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/uncompress.h @@ -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 +#include + +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 */ diff --git a/arch/arm/mach-s5pv310/include/mach/vmalloc.h b/arch/arm/mach-s5pv310/include/mach/vmalloc.h new file mode 100644 index 000000000000..3f565ebb7daa --- /dev/null +++ b/arch/arm/mach-s5pv310/include/mach/vmalloc.h @@ -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 + * + * 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 */ diff --git a/arch/arm/mach-s5pv310/init.c b/arch/arm/mach-s5pv310/init.c new file mode 100644 index 000000000000..182dcf42cfb4 --- /dev/null +++ b/arch/arm/mach-s5pv310/init.c @@ -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 + +#include +#include +#include + +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); +} diff --git a/arch/arm/mach-s5pv310/platsmp.c b/arch/arm/mach-s5pv310/platsmp.c new file mode 100644 index 000000000000..fe9469abd006 --- /dev/null +++ b/arch/arm/mach-s5pv310/platsmp.c @@ -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 +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include +#include + +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); + } +} diff --git a/arch/arm/mach-s5pv310/setup-i2c0.c b/arch/arm/mach-s5pv310/setup-i2c0.c new file mode 100644 index 000000000000..d4f5a8106946 --- /dev/null +++ b/arch/arm/mach-s5pv310/setup-i2c0.c @@ -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 */ +} -- cgit v1.2.3