forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
310 lines
7.4 KiB
310 lines
7.4 KiB
// SPDX-License-Identifier: GPL-2.0 |
|
/* |
|
* arch/arm/mach-ixp4xx/fsg-setup.c |
|
* |
|
* FSG board-setup |
|
* |
|
* Copyright (C) 2008 Rod Whitby <[email protected]> |
|
* |
|
* 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 <[email protected]> |
|
* 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> |
|
|
|
#include "irqs.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 resource fsg_eth_npeb_resources[] = { |
|
{ |
|
.start = IXP4XX_EthB_BASE_PHYS, |
|
.end = IXP4XX_EthB_BASE_PHYS + 0x0fff, |
|
.flags = IORESOURCE_MEM, |
|
}, |
|
}; |
|
|
|
static struct resource fsg_eth_npec_resources[] = { |
|
{ |
|
.start = IXP4XX_EthC_BASE_PHYS, |
|
.end = IXP4XX_EthC_BASE_PHYS + 0x0fff, |
|
.flags = IORESOURCE_MEM, |
|
}, |
|
}; |
|
|
|
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, |
|
}, |
|
.num_resources = ARRAY_SIZE(fsg_eth_npeb_resources), |
|
.resource = fsg_eth_npeb_resources, |
|
}, { |
|
.name = "ixp4xx_eth", |
|
.id = IXP4XX_ETH_NPEC, |
|
.dev = { |
|
.platform_data = fsg_plat_eth + 1, |
|
}, |
|
.num_resources = ARRAY_SIZE(fsg_eth_npec_resources), |
|
.resource = fsg_eth_npec_resources, |
|
} |
|
}; |
|
|
|
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 |
|
|
|
|