forked from Minki/linux
0e51793e16
Pull ARM updates from Russell King: "This is the first chunk of ARM updates for this merge window. Conflicts are expected in two files - asm/timex.h and mach-integrator/integrator_cp.c. Nothing particularly stands out more than anything else. Most of the growth is down to the opcodes stuff from Dave Martin, which is countered by Rob's patches to use more of the asm-generic headers on ARM." (A few more conflicts grew since then, but it all looked fairly trivial) * 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (44 commits) ARM: 7548/1: include linux/sched.h in syscall.h ARM: 7541/1: Add ARM ERRATA 775420 workaround ARM: ensure vm_struct has its phys_addr member filled in ARM: 7540/1: kexec: Check segment memory addresses ARM: 7539/1: kexec: scan for dtb magic in segments ARM: 7538/1: delay: add registration mechanism for delay timer sources ARM: 7536/1: smp: Formalize an IPI for wakeup ARM: 7525/1: ptrace: use updated syscall number for syscall auditing ARM: 7524/1: support syscall tracing ARM: 7519/1: integrator: convert platform devices to Device Tree ARM: 7518/1: integrator: convert AMBA devices to device tree ARM: 7517/1: integrator: initial device tree support ARM: 7516/1: plat-versatile: add DT support to FPGA IRQ ARM: 7515/1: integrator: check PL010 base address from resource ARM: 7514/1: integrator: call common init function from machine ARM: 7522/1: arch_timers: register a time/cycle counter ARM: 7523/1: arch_timers: enable the use of the virtual timer ARM: 7531/1: mark kernelmode mem{cpy,set} non-experimental ARM: 7520/1: Build dtb files in all target ARM: Fix build warning in arch/arm/mm/alignment.c ...
517 lines
13 KiB
C
517 lines
13 KiB
C
/*
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* linux/arch/arm/mach-integrator/integrator_cp.c
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*
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* Copyright (C) 2003 Deep Blue Solutions Ltd
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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 as published by
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* the Free Software Foundation; either version 2 of the License.
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*/
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/list.h>
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#include <linux/platform_device.h>
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#include <linux/dma-mapping.h>
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#include <linux/string.h>
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#include <linux/device.h>
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#include <linux/amba/bus.h>
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#include <linux/amba/kmi.h>
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#include <linux/amba/clcd.h>
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#include <linux/amba/mmci.h>
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#include <linux/io.h>
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#include <linux/gfp.h>
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#include <linux/mtd/physmap.h>
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#include <linux/platform_data/clk-integrator.h>
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#include <linux/of_irq.h>
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#include <linux/of_address.h>
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#include <linux/of_platform.h>
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#include <mach/hardware.h>
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#include <mach/platform.h>
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#include <asm/setup.h>
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#include <asm/mach-types.h>
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#include <asm/hardware/arm_timer.h>
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#include <asm/hardware/icst.h>
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#include <mach/cm.h>
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#include <mach/lm.h>
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#include <mach/irqs.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/irq.h>
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#include <asm/mach/map.h>
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#include <asm/mach/time.h>
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#include <asm/hardware/timer-sp.h>
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#include <plat/clcd.h>
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#include <plat/fpga-irq.h>
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#include <plat/sched_clock.h>
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#include "common.h"
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#define INTCP_PA_FLASH_BASE 0x24000000
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#define INTCP_PA_CLCD_BASE 0xc0000000
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#define INTCP_VA_CTRL_BASE __io_address(INTEGRATOR_CP_CTL_BASE)
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#define INTCP_FLASHPROG 0x04
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#define CINTEGRATOR_FLASHPROG_FLVPPEN (1 << 0)
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#define CINTEGRATOR_FLASHPROG_FLWREN (1 << 1)
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/*
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* Logical Physical
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* f1000000 10000000 Core module registers
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* f1100000 11000000 System controller registers
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* f1200000 12000000 EBI registers
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* f1300000 13000000 Counter/Timer
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* f1400000 14000000 Interrupt controller
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* f1600000 16000000 UART 0
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* f1700000 17000000 UART 1
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* f1a00000 1a000000 Debug LEDs
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* fc900000 c9000000 GPIO
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* fca00000 ca000000 SIC
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* fcb00000 cb000000 CP system control
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*/
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static struct map_desc intcp_io_desc[] __initdata = {
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{
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.virtual = IO_ADDRESS(INTEGRATOR_HDR_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_HDR_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = IO_ADDRESS(INTEGRATOR_SC_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_SC_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = IO_ADDRESS(INTEGRATOR_EBI_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_EBI_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = IO_ADDRESS(INTEGRATOR_CT_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_CT_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = IO_ADDRESS(INTEGRATOR_IC_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_IC_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = IO_ADDRESS(INTEGRATOR_UART0_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_UART0_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = IO_ADDRESS(INTEGRATOR_UART1_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_UART1_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = IO_ADDRESS(INTEGRATOR_DBG_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_DBG_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = IO_ADDRESS(INTEGRATOR_CP_GPIO_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_CP_GPIO_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = IO_ADDRESS(INTEGRATOR_CP_SIC_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_CP_SIC_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}, {
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.virtual = IO_ADDRESS(INTEGRATOR_CP_CTL_BASE),
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.pfn = __phys_to_pfn(INTEGRATOR_CP_CTL_BASE),
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.length = SZ_4K,
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.type = MT_DEVICE
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}
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};
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static void __init intcp_map_io(void)
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{
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iotable_init(intcp_io_desc, ARRAY_SIZE(intcp_io_desc));
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}
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/*
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* Flash handling.
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*/
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static int intcp_flash_init(struct platform_device *dev)
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{
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u32 val;
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val = readl(INTCP_VA_CTRL_BASE + INTCP_FLASHPROG);
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val |= CINTEGRATOR_FLASHPROG_FLWREN;
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writel(val, INTCP_VA_CTRL_BASE + INTCP_FLASHPROG);
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return 0;
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}
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static void intcp_flash_exit(struct platform_device *dev)
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{
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u32 val;
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val = readl(INTCP_VA_CTRL_BASE + INTCP_FLASHPROG);
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val &= ~(CINTEGRATOR_FLASHPROG_FLVPPEN|CINTEGRATOR_FLASHPROG_FLWREN);
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writel(val, INTCP_VA_CTRL_BASE + INTCP_FLASHPROG);
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}
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static void intcp_flash_set_vpp(struct platform_device *pdev, int on)
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{
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u32 val;
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val = readl(INTCP_VA_CTRL_BASE + INTCP_FLASHPROG);
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if (on)
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val |= CINTEGRATOR_FLASHPROG_FLVPPEN;
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else
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val &= ~CINTEGRATOR_FLASHPROG_FLVPPEN;
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writel(val, INTCP_VA_CTRL_BASE + INTCP_FLASHPROG);
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}
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static struct physmap_flash_data intcp_flash_data = {
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.width = 4,
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.init = intcp_flash_init,
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.exit = intcp_flash_exit,
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.set_vpp = intcp_flash_set_vpp,
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};
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/*
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* It seems that the card insertion interrupt remains active after
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* we've acknowledged it. We therefore ignore the interrupt, and
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* rely on reading it from the SIC. This also means that we must
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* clear the latched interrupt.
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*/
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static unsigned int mmc_status(struct device *dev)
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{
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unsigned int status = readl(__io_address(0xca000000 + 4));
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writel(8, __io_address(INTEGRATOR_CP_CTL_BASE + 8));
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return status & 8;
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}
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static struct mmci_platform_data mmc_data = {
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.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
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.status = mmc_status,
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.gpio_wp = -1,
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.gpio_cd = -1,
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};
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/*
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* CLCD support
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*/
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/*
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* Ensure VGA is selected.
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*/
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static void cp_clcd_enable(struct clcd_fb *fb)
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{
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struct fb_var_screeninfo *var = &fb->fb.var;
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u32 val = CM_CTRL_STATIC1 | CM_CTRL_STATIC2;
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if (var->bits_per_pixel <= 8 ||
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(var->bits_per_pixel == 16 && var->green.length == 5))
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/* Pseudocolor, RGB555, BGR555 */
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val |= CM_CTRL_LCDMUXSEL_VGA555_TFT555;
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else if (fb->fb.var.bits_per_pixel <= 16)
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/* truecolor RGB565 */
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val |= CM_CTRL_LCDMUXSEL_VGA565_TFT555;
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else
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val = 0; /* no idea for this, don't trust the docs */
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cm_control(CM_CTRL_LCDMUXSEL_MASK|
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CM_CTRL_LCDEN0|
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CM_CTRL_LCDEN1|
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CM_CTRL_STATIC1|
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CM_CTRL_STATIC2|
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CM_CTRL_STATIC|
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CM_CTRL_n24BITEN, val);
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}
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static int cp_clcd_setup(struct clcd_fb *fb)
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{
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fb->panel = versatile_clcd_get_panel("VGA");
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if (!fb->panel)
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return -EINVAL;
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return versatile_clcd_setup_dma(fb, SZ_1M);
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}
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static struct clcd_board clcd_data = {
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.name = "Integrator/CP",
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.caps = CLCD_CAP_5551 | CLCD_CAP_RGB565 | CLCD_CAP_888,
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.check = clcdfb_check,
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.decode = clcdfb_decode,
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.enable = cp_clcd_enable,
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.setup = cp_clcd_setup,
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.mmap = versatile_clcd_mmap_dma,
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.remove = versatile_clcd_remove_dma,
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};
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#define REFCOUNTER (__io_address(INTEGRATOR_HDR_BASE) + 0x28)
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static void __init intcp_init_early(void)
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{
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#ifdef CONFIG_PLAT_VERSATILE_SCHED_CLOCK
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versatile_sched_clock_init(REFCOUNTER, 24000000);
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#endif
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}
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static void __init intcp_timer_init_of(void)
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{
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struct device_node *node;
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const char *path;
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void __iomem *base;
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int err;
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int irq;
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err = of_property_read_string(of_aliases,
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"arm,timer-primary", &path);
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if (WARN_ON(err))
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return;
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node = of_find_node_by_path(path);
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base = of_iomap(node, 0);
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if (WARN_ON(!base))
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return;
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writel(0, base + TIMER_CTRL);
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sp804_clocksource_init(base, node->name);
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err = of_property_read_string(of_aliases,
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"arm,timer-secondary", &path);
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if (WARN_ON(err))
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return;
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node = of_find_node_by_path(path);
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base = of_iomap(node, 0);
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if (WARN_ON(!base))
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return;
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irq = irq_of_parse_and_map(node, 0);
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writel(0, base + TIMER_CTRL);
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sp804_clockevents_init(base, irq, node->name);
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}
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static struct sys_timer cp_of_timer = {
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.init = intcp_timer_init_of,
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};
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#ifdef CONFIG_OF
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static const struct of_device_id fpga_irq_of_match[] __initconst = {
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{ .compatible = "arm,versatile-fpga-irq", .data = fpga_irq_of_init, },
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{ /* Sentinel */ }
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};
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static void __init intcp_init_irq_of(void)
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{
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of_irq_init(fpga_irq_of_match);
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integrator_clk_init(true);
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}
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/*
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* For the Device Tree, add in the UART, MMC and CLCD specifics as AUXDATA
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* and enforce the bus names since these are used for clock lookups.
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*/
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static struct of_dev_auxdata intcp_auxdata_lookup[] __initdata = {
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OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_RTC_BASE,
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"rtc", NULL),
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OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_UART0_BASE,
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"uart0", &integrator_uart_data),
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OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_UART1_BASE,
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"uart1", &integrator_uart_data),
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OF_DEV_AUXDATA("arm,primecell", KMI0_BASE,
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"kmi0", NULL),
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OF_DEV_AUXDATA("arm,primecell", KMI1_BASE,
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"kmi1", NULL),
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OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_CP_MMC_BASE,
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"mmci", &mmc_data),
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OF_DEV_AUXDATA("arm,primecell", INTEGRATOR_CP_AACI_BASE,
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"aaci", &mmc_data),
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OF_DEV_AUXDATA("arm,primecell", INTCP_PA_CLCD_BASE,
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"clcd", &clcd_data),
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OF_DEV_AUXDATA("cfi-flash", INTCP_PA_FLASH_BASE,
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"physmap-flash", &intcp_flash_data),
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{ /* sentinel */ },
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};
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static void __init intcp_init_of(void)
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{
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of_platform_populate(NULL, of_default_bus_match_table,
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intcp_auxdata_lookup, NULL);
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}
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static const char * intcp_dt_board_compat[] = {
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"arm,integrator-cp",
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NULL,
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};
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DT_MACHINE_START(INTEGRATOR_CP_DT, "ARM Integrator/CP (Device Tree)")
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.reserve = integrator_reserve,
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.map_io = intcp_map_io,
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.nr_irqs = NR_IRQS_INTEGRATOR_CP,
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.init_early = intcp_init_early,
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.init_irq = intcp_init_irq_of,
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.handle_irq = fpga_handle_irq,
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.timer = &cp_of_timer,
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.init_machine = intcp_init_of,
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.restart = integrator_restart,
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.dt_compat = intcp_dt_board_compat,
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MACHINE_END
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#endif
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#ifdef CONFIG_ATAGS
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/*
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* This is where non-devicetree initialization code is collected and stashed
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* for eventual deletion.
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*/
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#define INTCP_FLASH_SIZE SZ_32M
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static struct resource intcp_flash_resource = {
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.start = INTCP_PA_FLASH_BASE,
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.end = INTCP_PA_FLASH_BASE + INTCP_FLASH_SIZE - 1,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device intcp_flash_device = {
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.name = "physmap-flash",
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.id = 0,
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.dev = {
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.platform_data = &intcp_flash_data,
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},
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.num_resources = 1,
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.resource = &intcp_flash_resource,
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};
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#define INTCP_ETH_SIZE 0x10
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static struct resource smc91x_resources[] = {
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[0] = {
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.start = INTEGRATOR_CP_ETH_BASE,
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.end = INTEGRATOR_CP_ETH_BASE + INTCP_ETH_SIZE - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = IRQ_CP_ETHINT,
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.end = IRQ_CP_ETHINT,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device smc91x_device = {
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.name = "smc91x",
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.id = 0,
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.num_resources = ARRAY_SIZE(smc91x_resources),
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.resource = smc91x_resources,
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};
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static struct platform_device *intcp_devs[] __initdata = {
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&intcp_flash_device,
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&smc91x_device,
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};
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#define INTCP_VA_CIC_BASE __io_address(INTEGRATOR_HDR_BASE + 0x40)
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#define INTCP_VA_PIC_BASE __io_address(INTEGRATOR_IC_BASE)
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#define INTCP_VA_SIC_BASE __io_address(INTEGRATOR_CP_SIC_BASE)
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static void __init intcp_init_irq(void)
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{
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u32 pic_mask, cic_mask, sic_mask;
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/* These masks are for the HW IRQ registers */
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pic_mask = ~((~0u) << (11 - IRQ_PIC_START));
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pic_mask |= (~((~0u) << (29 - 22))) << 22;
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cic_mask = ~((~0u) << (1 + IRQ_CIC_END - IRQ_CIC_START));
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sic_mask = ~((~0u) << (1 + IRQ_SIC_END - IRQ_SIC_START));
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/*
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* Disable all interrupt sources
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*/
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writel(0xffffffff, INTCP_VA_PIC_BASE + IRQ_ENABLE_CLEAR);
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writel(0xffffffff, INTCP_VA_PIC_BASE + FIQ_ENABLE_CLEAR);
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writel(0xffffffff, INTCP_VA_CIC_BASE + IRQ_ENABLE_CLEAR);
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writel(0xffffffff, INTCP_VA_CIC_BASE + FIQ_ENABLE_CLEAR);
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writel(sic_mask, INTCP_VA_SIC_BASE + IRQ_ENABLE_CLEAR);
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writel(sic_mask, INTCP_VA_SIC_BASE + FIQ_ENABLE_CLEAR);
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fpga_irq_init(INTCP_VA_PIC_BASE, "PIC", IRQ_PIC_START,
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-1, pic_mask, NULL);
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fpga_irq_init(INTCP_VA_CIC_BASE, "CIC", IRQ_CIC_START,
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-1, cic_mask, NULL);
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fpga_irq_init(INTCP_VA_SIC_BASE, "SIC", IRQ_SIC_START,
|
|
IRQ_CP_CPPLDINT, sic_mask, NULL);
|
|
|
|
integrator_clk_init(true);
|
|
}
|
|
|
|
#define TIMER0_VA_BASE __io_address(INTEGRATOR_TIMER0_BASE)
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|
#define TIMER1_VA_BASE __io_address(INTEGRATOR_TIMER1_BASE)
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|
#define TIMER2_VA_BASE __io_address(INTEGRATOR_TIMER2_BASE)
|
|
|
|
static void __init intcp_timer_init(void)
|
|
{
|
|
writel(0, TIMER0_VA_BASE + TIMER_CTRL);
|
|
writel(0, TIMER1_VA_BASE + TIMER_CTRL);
|
|
writel(0, TIMER2_VA_BASE + TIMER_CTRL);
|
|
|
|
sp804_clocksource_init(TIMER2_VA_BASE, "timer2");
|
|
sp804_clockevents_init(TIMER1_VA_BASE, IRQ_TIMERINT1, "timer1");
|
|
}
|
|
|
|
static struct sys_timer cp_timer = {
|
|
.init = intcp_timer_init,
|
|
};
|
|
|
|
#define INTEGRATOR_CP_MMC_IRQS { IRQ_CP_MMCIINT0, IRQ_CP_MMCIINT1 }
|
|
#define INTEGRATOR_CP_AACI_IRQS { IRQ_CP_AACIINT }
|
|
|
|
static AMBA_APB_DEVICE(mmc, "mmci", 0, INTEGRATOR_CP_MMC_BASE,
|
|
INTEGRATOR_CP_MMC_IRQS, &mmc_data);
|
|
|
|
static AMBA_APB_DEVICE(aaci, "aaci", 0, INTEGRATOR_CP_AACI_BASE,
|
|
INTEGRATOR_CP_AACI_IRQS, NULL);
|
|
|
|
static AMBA_AHB_DEVICE(clcd, "clcd", 0, INTCP_PA_CLCD_BASE,
|
|
{ IRQ_CP_CLCDCINT }, &clcd_data);
|
|
|
|
static struct amba_device *amba_devs[] __initdata = {
|
|
&mmc_device,
|
|
&aaci_device,
|
|
&clcd_device,
|
|
};
|
|
|
|
static void __init intcp_init(void)
|
|
{
|
|
int i;
|
|
|
|
platform_add_devices(intcp_devs, ARRAY_SIZE(intcp_devs));
|
|
|
|
for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
|
|
struct amba_device *d = amba_devs[i];
|
|
amba_device_register(d, &iomem_resource);
|
|
}
|
|
integrator_init(true);
|
|
}
|
|
|
|
MACHINE_START(CINTEGRATOR, "ARM-IntegratorCP")
|
|
/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
|
|
.atag_offset = 0x100,
|
|
.reserve = integrator_reserve,
|
|
.map_io = intcp_map_io,
|
|
.nr_irqs = NR_IRQS_INTEGRATOR_CP,
|
|
.init_early = intcp_init_early,
|
|
.init_irq = intcp_init_irq,
|
|
.handle_irq = fpga_handle_irq,
|
|
.timer = &cp_timer,
|
|
.init_machine = intcp_init,
|
|
.restart = integrator_restart,
|
|
MACHINE_END
|
|
|
|
#endif
|