336 lines
7.5 KiB
C
336 lines
7.5 KiB
C
/*
|
|
* arch/arm/mach-iop32x/iq31244.c
|
|
*
|
|
* Board support code for the Intel EP80219 and IQ31244 platforms.
|
|
*
|
|
* Author: Rory Bolt <rorybolt@pacbell.net>
|
|
* Copyright (C) 2002 Rory Bolt
|
|
* Copyright 2003 (c) MontaVista, Software, Inc.
|
|
* Copyright (C) 2004 Intel Corp.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include <linux/mm.h>
|
|
#include <linux/init.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/pm.h>
|
|
#include <linux/string.h>
|
|
#include <linux/serial_core.h>
|
|
#include <linux/serial_8250.h>
|
|
#include <linux/mtd/physmap.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/io.h>
|
|
#include <mach/hardware.h>
|
|
#include <asm/cputype.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/mach/map.h>
|
|
#include <asm/mach/pci.h>
|
|
#include <asm/mach/time.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/page.h>
|
|
#include <asm/pgtable.h>
|
|
#include <mach/time.h>
|
|
|
|
/*
|
|
* Until March of 2007 iq31244 platforms and ep80219 platforms shared the
|
|
* same machine id, and the processor type was used to select board type.
|
|
* However this assumption breaks for an iq80219 board which is an iop219
|
|
* processor on an iq31244 board. The force_ep80219 flag has been added
|
|
* for old boot loaders using the iq31244 machine id for an ep80219 platform.
|
|
*/
|
|
static int force_ep80219;
|
|
|
|
static int is_80219(void)
|
|
{
|
|
return !!((read_cpuid_id() & 0xffffffe0) == 0x69052e20);
|
|
}
|
|
|
|
static int is_ep80219(void)
|
|
{
|
|
if (machine_is_ep80219() || force_ep80219)
|
|
return 1;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* EP80219/IQ31244 timer tick configuration.
|
|
*/
|
|
static void __init iq31244_timer_init(void)
|
|
{
|
|
if (is_ep80219()) {
|
|
/* 33.333 MHz crystal. */
|
|
iop_init_time(200000000);
|
|
} else {
|
|
/* 33.000 MHz crystal. */
|
|
iop_init_time(198000000);
|
|
}
|
|
}
|
|
|
|
static struct sys_timer iq31244_timer = {
|
|
.init = iq31244_timer_init,
|
|
};
|
|
|
|
|
|
/*
|
|
* IQ31244 I/O.
|
|
*/
|
|
static struct map_desc iq31244_io_desc[] __initdata = {
|
|
{ /* on-board devices */
|
|
.virtual = IQ31244_UART,
|
|
.pfn = __phys_to_pfn(IQ31244_UART),
|
|
.length = 0x00100000,
|
|
.type = MT_DEVICE,
|
|
},
|
|
};
|
|
|
|
void __init iq31244_map_io(void)
|
|
{
|
|
iop3xx_map_io();
|
|
iotable_init(iq31244_io_desc, ARRAY_SIZE(iq31244_io_desc));
|
|
}
|
|
|
|
|
|
/*
|
|
* EP80219/IQ31244 PCI.
|
|
*/
|
|
static int __init
|
|
ep80219_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
|
|
{
|
|
int irq;
|
|
|
|
if (slot == 0) {
|
|
/* CFlash */
|
|
irq = IRQ_IOP32X_XINT1;
|
|
} else if (slot == 1) {
|
|
/* 82551 Pro 100 */
|
|
irq = IRQ_IOP32X_XINT0;
|
|
} else if (slot == 2) {
|
|
/* PCI-X Slot */
|
|
irq = IRQ_IOP32X_XINT3;
|
|
} else if (slot == 3) {
|
|
/* SATA */
|
|
irq = IRQ_IOP32X_XINT2;
|
|
} else {
|
|
printk(KERN_ERR "ep80219_pci_map_irq() called for unknown "
|
|
"device PCI:%d:%d:%d\n", dev->bus->number,
|
|
PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
|
|
irq = -1;
|
|
}
|
|
|
|
return irq;
|
|
}
|
|
|
|
static struct hw_pci ep80219_pci __initdata = {
|
|
.swizzle = pci_std_swizzle,
|
|
.nr_controllers = 1,
|
|
.setup = iop3xx_pci_setup,
|
|
.preinit = iop3xx_pci_preinit,
|
|
.scan = iop3xx_pci_scan_bus,
|
|
.map_irq = ep80219_pci_map_irq,
|
|
};
|
|
|
|
static int __init
|
|
iq31244_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
|
|
{
|
|
int irq;
|
|
|
|
if (slot == 0) {
|
|
/* CFlash */
|
|
irq = IRQ_IOP32X_XINT1;
|
|
} else if (slot == 1) {
|
|
/* SATA */
|
|
irq = IRQ_IOP32X_XINT2;
|
|
} else if (slot == 2) {
|
|
/* PCI-X Slot */
|
|
irq = IRQ_IOP32X_XINT3;
|
|
} else if (slot == 3) {
|
|
/* 82546 GigE */
|
|
irq = IRQ_IOP32X_XINT0;
|
|
} else {
|
|
printk(KERN_ERR "iq31244_pci_map_irq called for unknown "
|
|
"device PCI:%d:%d:%d\n", dev->bus->number,
|
|
PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
|
|
irq = -1;
|
|
}
|
|
|
|
return irq;
|
|
}
|
|
|
|
static struct hw_pci iq31244_pci __initdata = {
|
|
.swizzle = pci_std_swizzle,
|
|
.nr_controllers = 1,
|
|
.setup = iop3xx_pci_setup,
|
|
.preinit = iop3xx_pci_preinit,
|
|
.scan = iop3xx_pci_scan_bus,
|
|
.map_irq = iq31244_pci_map_irq,
|
|
};
|
|
|
|
static int __init iq31244_pci_init(void)
|
|
{
|
|
if (is_ep80219())
|
|
pci_common_init(&ep80219_pci);
|
|
else if (machine_is_iq31244()) {
|
|
if (is_80219()) {
|
|
printk("note: iq31244 board type has been selected\n");
|
|
printk("note: to select ep80219 operation:\n");
|
|
printk("\t1/ specify \"force_ep80219\" on the kernel"
|
|
" command line\n");
|
|
printk("\t2/ update boot loader to pass"
|
|
" the ep80219 id: %d\n", MACH_TYPE_EP80219);
|
|
}
|
|
pci_common_init(&iq31244_pci);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
subsys_initcall(iq31244_pci_init);
|
|
|
|
|
|
/*
|
|
* IQ31244 machine initialisation.
|
|
*/
|
|
static struct physmap_flash_data iq31244_flash_data = {
|
|
.width = 2,
|
|
};
|
|
|
|
static struct resource iq31244_flash_resource = {
|
|
.start = 0xf0000000,
|
|
.end = 0xf07fffff,
|
|
.flags = IORESOURCE_MEM,
|
|
};
|
|
|
|
static struct platform_device iq31244_flash_device = {
|
|
.name = "physmap-flash",
|
|
.id = 0,
|
|
.dev = {
|
|
.platform_data = &iq31244_flash_data,
|
|
},
|
|
.num_resources = 1,
|
|
.resource = &iq31244_flash_resource,
|
|
};
|
|
|
|
static struct plat_serial8250_port iq31244_serial_port[] = {
|
|
{
|
|
.mapbase = IQ31244_UART,
|
|
.membase = (char *)IQ31244_UART,
|
|
.irq = IRQ_IOP32X_XINT1,
|
|
.flags = UPF_SKIP_TEST,
|
|
.iotype = UPIO_MEM,
|
|
.regshift = 0,
|
|
.uartclk = 1843200,
|
|
},
|
|
{ },
|
|
};
|
|
|
|
static struct resource iq31244_uart_resource = {
|
|
.start = IQ31244_UART,
|
|
.end = IQ31244_UART + 7,
|
|
.flags = IORESOURCE_MEM,
|
|
};
|
|
|
|
static struct platform_device iq31244_serial_device = {
|
|
.name = "serial8250",
|
|
.id = PLAT8250_DEV_PLATFORM,
|
|
.dev = {
|
|
.platform_data = iq31244_serial_port,
|
|
},
|
|
.num_resources = 1,
|
|
.resource = &iq31244_uart_resource,
|
|
};
|
|
|
|
/*
|
|
* This function will send a SHUTDOWN_COMPLETE message to the PIC
|
|
* controller over I2C. We are not using the i2c subsystem since
|
|
* we are going to power off and it may be removed
|
|
*/
|
|
void ep80219_power_off(void)
|
|
{
|
|
/*
|
|
* Send the Address byte w/ the start condition
|
|
*/
|
|
*IOP3XX_IDBR1 = 0x60;
|
|
*IOP3XX_ICR1 = 0xE9;
|
|
mdelay(1);
|
|
|
|
/*
|
|
* Send the START_MSG byte w/ no start or stop condition
|
|
*/
|
|
*IOP3XX_IDBR1 = 0x0F;
|
|
*IOP3XX_ICR1 = 0xE8;
|
|
mdelay(1);
|
|
|
|
/*
|
|
* Send the SHUTDOWN_COMPLETE Message ID byte w/ no start or
|
|
* stop condition
|
|
*/
|
|
*IOP3XX_IDBR1 = 0x03;
|
|
*IOP3XX_ICR1 = 0xE8;
|
|
mdelay(1);
|
|
|
|
/*
|
|
* Send an ignored byte w/ stop condition
|
|
*/
|
|
*IOP3XX_IDBR1 = 0x00;
|
|
*IOP3XX_ICR1 = 0xEA;
|
|
|
|
while (1)
|
|
;
|
|
}
|
|
|
|
static void __init iq31244_init_machine(void)
|
|
{
|
|
platform_device_register(&iop3xx_i2c0_device);
|
|
platform_device_register(&iop3xx_i2c1_device);
|
|
platform_device_register(&iq31244_flash_device);
|
|
platform_device_register(&iq31244_serial_device);
|
|
platform_device_register(&iop3xx_dma_0_channel);
|
|
platform_device_register(&iop3xx_dma_1_channel);
|
|
|
|
if (is_ep80219())
|
|
pm_power_off = ep80219_power_off;
|
|
|
|
if (!is_80219())
|
|
platform_device_register(&iop3xx_aau_channel);
|
|
}
|
|
|
|
static int __init force_ep80219_setup(char *str)
|
|
{
|
|
force_ep80219 = 1;
|
|
return 1;
|
|
}
|
|
|
|
__setup("force_ep80219", force_ep80219_setup);
|
|
|
|
MACHINE_START(IQ31244, "Intel IQ31244")
|
|
/* Maintainer: Intel Corp. */
|
|
.boot_params = 0xa0000100,
|
|
.map_io = iq31244_map_io,
|
|
.init_irq = iop32x_init_irq,
|
|
.timer = &iq31244_timer,
|
|
.init_machine = iq31244_init_machine,
|
|
MACHINE_END
|
|
|
|
/* There should have been an ep80219 machine identifier from the beginning.
|
|
* Boot roms older than March 2007 do not know the ep80219 machine id. Pass
|
|
* "force_ep80219" on the kernel command line, otherwise iq31244 operation
|
|
* will be selected.
|
|
*/
|
|
MACHINE_START(EP80219, "Intel EP80219")
|
|
/* Maintainer: Intel Corp. */
|
|
.boot_params = 0xa0000100,
|
|
.map_io = iq31244_map_io,
|
|
.init_irq = iop32x_init_irq,
|
|
.timer = &iq31244_timer,
|
|
.init_machine = iq31244_init_machine,
|
|
MACHINE_END
|