d2a02b93cf
Convert all uses of kmalloc followed by memset to use kzalloc instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
355 lines
8.7 KiB
C
355 lines
8.7 KiB
C
/*
|
|
* linux/arch/arm/mach-integrator/integrator_ap.c
|
|
*
|
|
* Copyright (C) 2000-2003 Deep Blue Solutions Ltd
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
#include <linux/types.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/list.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/string.h>
|
|
#include <linux/sysdev.h>
|
|
#include <linux/amba/bus.h>
|
|
#include <linux/amba/kmi.h>
|
|
|
|
#include <asm/hardware.h>
|
|
#include <asm/io.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/setup.h>
|
|
#include <asm/param.h> /* HZ */
|
|
#include <asm/mach-types.h>
|
|
|
|
#include <asm/arch/lm.h>
|
|
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/mach/flash.h>
|
|
#include <asm/mach/irq.h>
|
|
#include <asm/mach/map.h>
|
|
#include <asm/mach/time.h>
|
|
|
|
#include "common.h"
|
|
|
|
/*
|
|
* All IO addresses are mapped onto VA 0xFFFx.xxxx, where x.xxxx
|
|
* is the (PA >> 12).
|
|
*
|
|
* Setup a VA for the Integrator interrupt controller (for header #0,
|
|
* just for now).
|
|
*/
|
|
#define VA_IC_BASE IO_ADDRESS(INTEGRATOR_IC_BASE)
|
|
#define VA_SC_BASE IO_ADDRESS(INTEGRATOR_SC_BASE)
|
|
#define VA_EBI_BASE IO_ADDRESS(INTEGRATOR_EBI_BASE)
|
|
#define VA_CMIC_BASE IO_ADDRESS(INTEGRATOR_HDR_BASE) + INTEGRATOR_HDR_IC_OFFSET
|
|
|
|
/*
|
|
* Logical Physical
|
|
* e8000000 40000000 PCI memory PHYS_PCI_MEM_BASE (max 512M)
|
|
* ec000000 61000000 PCI config space PHYS_PCI_CONFIG_BASE (max 16M)
|
|
* ed000000 62000000 PCI V3 regs PHYS_PCI_V3_BASE (max 64k)
|
|
* ee000000 60000000 PCI IO PHYS_PCI_IO_BASE (max 16M)
|
|
* ef000000 Cache flush
|
|
* f1000000 10000000 Core module registers
|
|
* f1100000 11000000 System controller registers
|
|
* f1200000 12000000 EBI registers
|
|
* f1300000 13000000 Counter/Timer
|
|
* f1400000 14000000 Interrupt controller
|
|
* f1600000 16000000 UART 0
|
|
* f1700000 17000000 UART 1
|
|
* f1a00000 1a000000 Debug LEDs
|
|
* f1b00000 1b000000 GPIO
|
|
*/
|
|
|
|
static struct map_desc ap_io_desc[] __initdata = {
|
|
{
|
|
.virtual = IO_ADDRESS(INTEGRATOR_HDR_BASE),
|
|
.pfn = __phys_to_pfn(INTEGRATOR_HDR_BASE),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = IO_ADDRESS(INTEGRATOR_SC_BASE),
|
|
.pfn = __phys_to_pfn(INTEGRATOR_SC_BASE),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = IO_ADDRESS(INTEGRATOR_EBI_BASE),
|
|
.pfn = __phys_to_pfn(INTEGRATOR_EBI_BASE),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = IO_ADDRESS(INTEGRATOR_CT_BASE),
|
|
.pfn = __phys_to_pfn(INTEGRATOR_CT_BASE),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = IO_ADDRESS(INTEGRATOR_IC_BASE),
|
|
.pfn = __phys_to_pfn(INTEGRATOR_IC_BASE),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = IO_ADDRESS(INTEGRATOR_UART0_BASE),
|
|
.pfn = __phys_to_pfn(INTEGRATOR_UART0_BASE),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = IO_ADDRESS(INTEGRATOR_UART1_BASE),
|
|
.pfn = __phys_to_pfn(INTEGRATOR_UART1_BASE),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = IO_ADDRESS(INTEGRATOR_DBG_BASE),
|
|
.pfn = __phys_to_pfn(INTEGRATOR_DBG_BASE),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = IO_ADDRESS(INTEGRATOR_GPIO_BASE),
|
|
.pfn = __phys_to_pfn(INTEGRATOR_GPIO_BASE),
|
|
.length = SZ_4K,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = PCI_MEMORY_VADDR,
|
|
.pfn = __phys_to_pfn(PHYS_PCI_MEM_BASE),
|
|
.length = SZ_16M,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = PCI_CONFIG_VADDR,
|
|
.pfn = __phys_to_pfn(PHYS_PCI_CONFIG_BASE),
|
|
.length = SZ_16M,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = PCI_V3_VADDR,
|
|
.pfn = __phys_to_pfn(PHYS_PCI_V3_BASE),
|
|
.length = SZ_64K,
|
|
.type = MT_DEVICE
|
|
}, {
|
|
.virtual = PCI_IO_VADDR,
|
|
.pfn = __phys_to_pfn(PHYS_PCI_IO_BASE),
|
|
.length = SZ_64K,
|
|
.type = MT_DEVICE
|
|
}
|
|
};
|
|
|
|
static void __init ap_map_io(void)
|
|
{
|
|
iotable_init(ap_io_desc, ARRAY_SIZE(ap_io_desc));
|
|
}
|
|
|
|
#define INTEGRATOR_SC_VALID_INT 0x003fffff
|
|
|
|
static void sc_mask_irq(unsigned int irq)
|
|
{
|
|
writel(1 << irq, VA_IC_BASE + IRQ_ENABLE_CLEAR);
|
|
}
|
|
|
|
static void sc_unmask_irq(unsigned int irq)
|
|
{
|
|
writel(1 << irq, VA_IC_BASE + IRQ_ENABLE_SET);
|
|
}
|
|
|
|
static struct irqchip sc_chip = {
|
|
.ack = sc_mask_irq,
|
|
.mask = sc_mask_irq,
|
|
.unmask = sc_unmask_irq,
|
|
};
|
|
|
|
static void __init ap_init_irq(void)
|
|
{
|
|
unsigned int i;
|
|
|
|
/* Disable all interrupts initially. */
|
|
/* Do the core module ones */
|
|
writel(-1, VA_CMIC_BASE + IRQ_ENABLE_CLEAR);
|
|
|
|
/* do the header card stuff next */
|
|
writel(-1, VA_IC_BASE + IRQ_ENABLE_CLEAR);
|
|
writel(-1, VA_IC_BASE + FIQ_ENABLE_CLEAR);
|
|
|
|
for (i = 0; i < NR_IRQS; i++) {
|
|
if (((1 << i) & INTEGRATOR_SC_VALID_INT) != 0) {
|
|
set_irq_chip(i, &sc_chip);
|
|
set_irq_handler(i, do_level_IRQ);
|
|
set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_PM
|
|
static unsigned long ic_irq_enable;
|
|
|
|
static int irq_suspend(struct sys_device *dev, pm_message_t state)
|
|
{
|
|
ic_irq_enable = readl(VA_IC_BASE + IRQ_ENABLE);
|
|
return 0;
|
|
}
|
|
|
|
static int irq_resume(struct sys_device *dev)
|
|
{
|
|
/* disable all irq sources */
|
|
writel(-1, VA_CMIC_BASE + IRQ_ENABLE_CLEAR);
|
|
writel(-1, VA_IC_BASE + IRQ_ENABLE_CLEAR);
|
|
writel(-1, VA_IC_BASE + FIQ_ENABLE_CLEAR);
|
|
|
|
writel(ic_irq_enable, VA_IC_BASE + IRQ_ENABLE_SET);
|
|
return 0;
|
|
}
|
|
#else
|
|
#define irq_suspend NULL
|
|
#define irq_resume NULL
|
|
#endif
|
|
|
|
static struct sysdev_class irq_class = {
|
|
set_kset_name("irq"),
|
|
.suspend = irq_suspend,
|
|
.resume = irq_resume,
|
|
};
|
|
|
|
static struct sys_device irq_device = {
|
|
.id = 0,
|
|
.cls = &irq_class,
|
|
};
|
|
|
|
static int __init irq_init_sysfs(void)
|
|
{
|
|
int ret = sysdev_class_register(&irq_class);
|
|
if (ret == 0)
|
|
ret = sysdev_register(&irq_device);
|
|
return ret;
|
|
}
|
|
|
|
device_initcall(irq_init_sysfs);
|
|
|
|
/*
|
|
* Flash handling.
|
|
*/
|
|
#define SC_CTRLC (VA_SC_BASE + INTEGRATOR_SC_CTRLC_OFFSET)
|
|
#define SC_CTRLS (VA_SC_BASE + INTEGRATOR_SC_CTRLS_OFFSET)
|
|
#define EBI_CSR1 (VA_EBI_BASE + INTEGRATOR_EBI_CSR1_OFFSET)
|
|
#define EBI_LOCK (VA_EBI_BASE + INTEGRATOR_EBI_LOCK_OFFSET)
|
|
|
|
static int ap_flash_init(void)
|
|
{
|
|
u32 tmp;
|
|
|
|
writel(INTEGRATOR_SC_CTRL_nFLVPPEN | INTEGRATOR_SC_CTRL_nFLWP, SC_CTRLC);
|
|
|
|
tmp = readl(EBI_CSR1) | INTEGRATOR_EBI_WRITE_ENABLE;
|
|
writel(tmp, EBI_CSR1);
|
|
|
|
if (!(readl(EBI_CSR1) & INTEGRATOR_EBI_WRITE_ENABLE)) {
|
|
writel(0xa05f, EBI_LOCK);
|
|
writel(tmp, EBI_CSR1);
|
|
writel(0, EBI_LOCK);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static void ap_flash_exit(void)
|
|
{
|
|
u32 tmp;
|
|
|
|
writel(INTEGRATOR_SC_CTRL_nFLVPPEN | INTEGRATOR_SC_CTRL_nFLWP, SC_CTRLC);
|
|
|
|
tmp = readl(EBI_CSR1) & ~INTEGRATOR_EBI_WRITE_ENABLE;
|
|
writel(tmp, EBI_CSR1);
|
|
|
|
if (readl(EBI_CSR1) & INTEGRATOR_EBI_WRITE_ENABLE) {
|
|
writel(0xa05f, EBI_LOCK);
|
|
writel(tmp, EBI_CSR1);
|
|
writel(0, EBI_LOCK);
|
|
}
|
|
}
|
|
|
|
static void ap_flash_set_vpp(int on)
|
|
{
|
|
unsigned long reg = on ? SC_CTRLS : SC_CTRLC;
|
|
|
|
writel(INTEGRATOR_SC_CTRL_nFLVPPEN, reg);
|
|
}
|
|
|
|
static struct flash_platform_data ap_flash_data = {
|
|
.map_name = "cfi_probe",
|
|
.width = 4,
|
|
.init = ap_flash_init,
|
|
.exit = ap_flash_exit,
|
|
.set_vpp = ap_flash_set_vpp,
|
|
};
|
|
|
|
static struct resource cfi_flash_resource = {
|
|
.start = INTEGRATOR_FLASH_BASE,
|
|
.end = INTEGRATOR_FLASH_BASE + INTEGRATOR_FLASH_SIZE - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
};
|
|
|
|
static struct platform_device cfi_flash_device = {
|
|
.name = "armflash",
|
|
.id = 0,
|
|
.dev = {
|
|
.platform_data = &ap_flash_data,
|
|
},
|
|
.num_resources = 1,
|
|
.resource = &cfi_flash_resource,
|
|
};
|
|
|
|
static void __init ap_init(void)
|
|
{
|
|
unsigned long sc_dec;
|
|
int i;
|
|
|
|
platform_device_register(&cfi_flash_device);
|
|
|
|
sc_dec = readl(VA_SC_BASE + INTEGRATOR_SC_DEC_OFFSET);
|
|
for (i = 0; i < 4; i++) {
|
|
struct lm_device *lmdev;
|
|
|
|
if ((sc_dec & (16 << i)) == 0)
|
|
continue;
|
|
|
|
lmdev = kzalloc(sizeof(struct lm_device), GFP_KERNEL);
|
|
if (!lmdev)
|
|
continue;
|
|
|
|
lmdev->resource.start = 0xc0000000 + 0x10000000 * i;
|
|
lmdev->resource.end = lmdev->resource.start + 0x0fffffff;
|
|
lmdev->resource.flags = IORESOURCE_MEM;
|
|
lmdev->irq = IRQ_AP_EXPINT0 + i;
|
|
lmdev->id = i;
|
|
|
|
lm_device_register(lmdev);
|
|
}
|
|
}
|
|
|
|
static void __init ap_init_timer(void)
|
|
{
|
|
integrator_time_init(1000000 * TICKS_PER_uSEC / HZ, 0);
|
|
}
|
|
|
|
static struct sys_timer ap_timer = {
|
|
.init = ap_init_timer,
|
|
.offset = integrator_gettimeoffset,
|
|
};
|
|
|
|
MACHINE_START(INTEGRATOR, "ARM-Integrator")
|
|
/* Maintainer: ARM Ltd/Deep Blue Solutions Ltd */
|
|
.phys_io = 0x16000000,
|
|
.io_pg_offst = ((0xf1600000) >> 18) & 0xfffc,
|
|
.boot_params = 0x00000100,
|
|
.map_io = ap_map_io,
|
|
.init_irq = ap_init_irq,
|
|
.timer = &ap_timer,
|
|
.init_machine = ap_init,
|
|
MACHINE_END
|