289 lines
6.9 KiB
C
289 lines
6.9 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* arch/arm/mach-ixp4xx/fsg-setup.c
|
|
*
|
|
* FSG board-setup
|
|
*
|
|
* Copyright (C) 2008 Rod Whitby <rod@whitby.id.au>
|
|
*
|
|
* based on ixdp425-setup.c:
|
|
* Copyright (C) 2003-2004 MontaVista Software, Inc.
|
|
* based on nslu2-power.c
|
|
* Copyright (C) 2005 Tower Technologies
|
|
*
|
|
* Author: Rod Whitby <rod@whitby.id.au>
|
|
* Maintainers: http://www.nslu2-linux.org/
|
|
*
|
|
*/
|
|
#include <linux/gpio.h>
|
|
#include <linux/if_ether.h>
|
|
#include <linux/irq.h>
|
|
#include <linux/serial.h>
|
|
#include <linux/serial_8250.h>
|
|
#include <linux/leds.h>
|
|
#include <linux/reboot.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/gpio/machine.h>
|
|
#include <linux/io.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/mach/flash.h>
|
|
|
|
#define FSG_SDA_PIN 12
|
|
#define FSG_SCL_PIN 13
|
|
|
|
#define FSG_SB_GPIO 4 /* sync button */
|
|
#define FSG_RB_GPIO 9 /* reset button */
|
|
#define FSG_UB_GPIO 10 /* usb button */
|
|
|
|
static struct flash_platform_data fsg_flash_data = {
|
|
.map_name = "cfi_probe",
|
|
.width = 2,
|
|
};
|
|
|
|
static struct resource fsg_flash_resource = {
|
|
.flags = IORESOURCE_MEM,
|
|
};
|
|
|
|
static struct platform_device fsg_flash = {
|
|
.name = "IXP4XX-Flash",
|
|
.id = 0,
|
|
.dev = {
|
|
.platform_data = &fsg_flash_data,
|
|
},
|
|
.num_resources = 1,
|
|
.resource = &fsg_flash_resource,
|
|
};
|
|
|
|
static struct gpiod_lookup_table fsg_i2c_gpiod_table = {
|
|
.dev_id = "i2c-gpio.0",
|
|
.table = {
|
|
GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", FSG_SDA_PIN,
|
|
NULL, 0, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
|
|
GPIO_LOOKUP_IDX("IXP4XX_GPIO_CHIP", FSG_SCL_PIN,
|
|
NULL, 1, GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN),
|
|
},
|
|
};
|
|
|
|
static struct platform_device fsg_i2c_gpio = {
|
|
.name = "i2c-gpio",
|
|
.id = 0,
|
|
.dev = {
|
|
.platform_data = NULL,
|
|
},
|
|
};
|
|
|
|
static struct i2c_board_info __initdata fsg_i2c_board_info [] = {
|
|
{
|
|
I2C_BOARD_INFO("isl1208", 0x6f),
|
|
},
|
|
};
|
|
|
|
static struct resource fsg_uart_resources[] = {
|
|
{
|
|
.start = IXP4XX_UART1_BASE_PHYS,
|
|
.end = IXP4XX_UART1_BASE_PHYS + 0x0fff,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
{
|
|
.start = IXP4XX_UART2_BASE_PHYS,
|
|
.end = IXP4XX_UART2_BASE_PHYS + 0x0fff,
|
|
.flags = IORESOURCE_MEM,
|
|
}
|
|
};
|
|
|
|
static struct plat_serial8250_port fsg_uart_data[] = {
|
|
{
|
|
.mapbase = IXP4XX_UART1_BASE_PHYS,
|
|
.membase = (char *)IXP4XX_UART1_BASE_VIRT + REG_OFFSET,
|
|
.irq = IRQ_IXP4XX_UART1,
|
|
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
|
|
.iotype = UPIO_MEM,
|
|
.regshift = 2,
|
|
.uartclk = IXP4XX_UART_XTAL,
|
|
},
|
|
{
|
|
.mapbase = IXP4XX_UART2_BASE_PHYS,
|
|
.membase = (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
|
|
.irq = IRQ_IXP4XX_UART2,
|
|
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
|
|
.iotype = UPIO_MEM,
|
|
.regshift = 2,
|
|
.uartclk = IXP4XX_UART_XTAL,
|
|
},
|
|
{ }
|
|
};
|
|
|
|
static struct platform_device fsg_uart = {
|
|
.name = "serial8250",
|
|
.id = PLAT8250_DEV_PLATFORM,
|
|
.dev = {
|
|
.platform_data = fsg_uart_data,
|
|
},
|
|
.num_resources = ARRAY_SIZE(fsg_uart_resources),
|
|
.resource = fsg_uart_resources,
|
|
};
|
|
|
|
static struct platform_device fsg_leds = {
|
|
.name = "fsg-led",
|
|
.id = -1,
|
|
};
|
|
|
|
/* Built-in 10/100 Ethernet MAC interfaces */
|
|
static struct eth_plat_info fsg_plat_eth[] = {
|
|
{
|
|
.phy = 5,
|
|
.rxq = 3,
|
|
.txreadyq = 20,
|
|
}, {
|
|
.phy = 4,
|
|
.rxq = 4,
|
|
.txreadyq = 21,
|
|
}
|
|
};
|
|
|
|
static struct platform_device fsg_eth[] = {
|
|
{
|
|
.name = "ixp4xx_eth",
|
|
.id = IXP4XX_ETH_NPEB,
|
|
.dev = {
|
|
.platform_data = fsg_plat_eth,
|
|
},
|
|
}, {
|
|
.name = "ixp4xx_eth",
|
|
.id = IXP4XX_ETH_NPEC,
|
|
.dev = {
|
|
.platform_data = fsg_plat_eth + 1,
|
|
},
|
|
}
|
|
};
|
|
|
|
static struct platform_device *fsg_devices[] __initdata = {
|
|
&fsg_i2c_gpio,
|
|
&fsg_flash,
|
|
&fsg_leds,
|
|
&fsg_eth[0],
|
|
&fsg_eth[1],
|
|
};
|
|
|
|
static irqreturn_t fsg_power_handler(int irq, void *dev_id)
|
|
{
|
|
/* Signal init to do the ctrlaltdel action, this will bypass init if
|
|
* it hasn't started and do a kernel_restart.
|
|
*/
|
|
ctrl_alt_del();
|
|
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t fsg_reset_handler(int irq, void *dev_id)
|
|
{
|
|
/* This is the paper-clip reset which does an emergency reboot. */
|
|
printk(KERN_INFO "Restarting system.\n");
|
|
machine_restart(NULL);
|
|
|
|
/* This should never be reached. */
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void __init fsg_init(void)
|
|
{
|
|
uint8_t __iomem *f;
|
|
|
|
ixp4xx_sys_init();
|
|
|
|
fsg_flash_resource.start = IXP4XX_EXP_BUS_BASE(0);
|
|
fsg_flash_resource.end =
|
|
IXP4XX_EXP_BUS_BASE(0) + ixp4xx_exp_bus_size - 1;
|
|
|
|
*IXP4XX_EXP_CS0 |= IXP4XX_FLASH_WRITABLE;
|
|
*IXP4XX_EXP_CS1 = *IXP4XX_EXP_CS0;
|
|
|
|
/* Configure CS2 for operation, 8bit and writable */
|
|
*IXP4XX_EXP_CS2 = 0xbfff0002;
|
|
|
|
gpiod_add_lookup_table(&fsg_i2c_gpiod_table);
|
|
i2c_register_board_info(0, fsg_i2c_board_info,
|
|
ARRAY_SIZE(fsg_i2c_board_info));
|
|
|
|
/* This is only useful on a modified machine, but it is valuable
|
|
* to have it first in order to see debug messages, and so that
|
|
* it does *not* get removed if platform_add_devices fails!
|
|
*/
|
|
(void)platform_device_register(&fsg_uart);
|
|
|
|
platform_add_devices(fsg_devices, ARRAY_SIZE(fsg_devices));
|
|
|
|
if (request_irq(gpio_to_irq(FSG_RB_GPIO), &fsg_reset_handler,
|
|
IRQF_TRIGGER_LOW, "FSG reset button", NULL) < 0) {
|
|
|
|
printk(KERN_DEBUG "Reset Button IRQ %d not available\n",
|
|
gpio_to_irq(FSG_RB_GPIO));
|
|
}
|
|
|
|
if (request_irq(gpio_to_irq(FSG_SB_GPIO), &fsg_power_handler,
|
|
IRQF_TRIGGER_LOW, "FSG power button", NULL) < 0) {
|
|
|
|
printk(KERN_DEBUG "Power Button IRQ %d not available\n",
|
|
gpio_to_irq(FSG_SB_GPIO));
|
|
}
|
|
|
|
/*
|
|
* Map in a portion of the flash and read the MAC addresses.
|
|
* Since it is stored in BE in the flash itself, we need to
|
|
* byteswap it if we're in LE mode.
|
|
*/
|
|
f = ioremap(IXP4XX_EXP_BUS_BASE(0), 0x400000);
|
|
if (f) {
|
|
#ifdef __ARMEB__
|
|
int i;
|
|
for (i = 0; i < 6; i++) {
|
|
fsg_plat_eth[0].hwaddr[i] = readb(f + 0x3C0422 + i);
|
|
fsg_plat_eth[1].hwaddr[i] = readb(f + 0x3C043B + i);
|
|
}
|
|
#else
|
|
|
|
/*
|
|
Endian-swapped reads from unaligned addresses are
|
|
required to extract the two MACs from the big-endian
|
|
Redboot config area in flash.
|
|
*/
|
|
|
|
fsg_plat_eth[0].hwaddr[0] = readb(f + 0x3C0421);
|
|
fsg_plat_eth[0].hwaddr[1] = readb(f + 0x3C0420);
|
|
fsg_plat_eth[0].hwaddr[2] = readb(f + 0x3C0427);
|
|
fsg_plat_eth[0].hwaddr[3] = readb(f + 0x3C0426);
|
|
fsg_plat_eth[0].hwaddr[4] = readb(f + 0x3C0425);
|
|
fsg_plat_eth[0].hwaddr[5] = readb(f + 0x3C0424);
|
|
|
|
fsg_plat_eth[1].hwaddr[0] = readb(f + 0x3C0439);
|
|
fsg_plat_eth[1].hwaddr[1] = readb(f + 0x3C043F);
|
|
fsg_plat_eth[1].hwaddr[2] = readb(f + 0x3C043E);
|
|
fsg_plat_eth[1].hwaddr[3] = readb(f + 0x3C043D);
|
|
fsg_plat_eth[1].hwaddr[4] = readb(f + 0x3C043C);
|
|
fsg_plat_eth[1].hwaddr[5] = readb(f + 0x3C0443);
|
|
#endif
|
|
iounmap(f);
|
|
}
|
|
printk(KERN_INFO "FSG: Using MAC address %pM for port 0\n",
|
|
fsg_plat_eth[0].hwaddr);
|
|
printk(KERN_INFO "FSG: Using MAC address %pM for port 1\n",
|
|
fsg_plat_eth[1].hwaddr);
|
|
|
|
}
|
|
|
|
MACHINE_START(FSG, "Freecom FSG-3")
|
|
/* Maintainer: www.nslu2-linux.org */
|
|
.map_io = ixp4xx_map_io,
|
|
.init_early = ixp4xx_init_early,
|
|
.init_irq = ixp4xx_init_irq,
|
|
.init_time = ixp4xx_timer_init,
|
|
.atag_offset = 0x100,
|
|
.init_machine = fsg_init,
|
|
#if defined(CONFIG_PCI)
|
|
.dma_zone_size = SZ_64M,
|
|
#endif
|
|
.restart = ixp4xx_restart,
|
|
MACHINE_END
|
|
|