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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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10233a9398
CPUAT91 is based on Atmel's AT91RM9200 with up to 16MB Strataflash, up to 128MB SDRAM and an ethernet PHY in RMII mode. Signed-off-by: Eric Benard <ebenard@eukrea.com> Acked-by: Andrew Victor <linux@maxim.org.za> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
186 lines
4.6 KiB
C
186 lines
4.6 KiB
C
/*
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* linux/arch/arm/mach-at91/board-cpuat91.c
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*
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* Copyright (C) 2009 Eric Benard - eric@eukrea.com
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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, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/mm.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/mtd/physmap.h>
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#include <linux/mtd/plat-ram.h>
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#include <mach/hardware.h>
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#include <asm/setup.h>
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#include <asm/mach-types.h>
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#include <asm/irq.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include <mach/board.h>
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#include <mach/gpio.h>
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#include <mach/at91rm9200_mc.h>
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#include "generic.h"
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static struct gpio_led cpuat91_leds[] = {
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{
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.name = "led1",
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.default_trigger = "heartbeat",
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.active_low = 1,
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.gpio = AT91_PIN_PC0,
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},
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};
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static void __init cpuat91_map_io(void)
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{
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/* Initialize processor: 18.432 MHz crystal */
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at91rm9200_initialize(18432000, AT91RM9200_PQFP);
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/* DBGU on ttyS0. (Rx & Tx only) */
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at91_register_uart(0, 0, 0);
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/* USART0 on ttyS1. (Rx, Tx, CTS, RTS) */
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at91_register_uart(AT91RM9200_ID_US0, 1, ATMEL_UART_CTS |
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ATMEL_UART_RTS);
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/* USART1 on ttyS2. (Rx, Tx, CTS, RTS, DTR, DSR, DCD, RI) */
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at91_register_uart(AT91RM9200_ID_US1, 2, ATMEL_UART_CTS |
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ATMEL_UART_RTS | ATMEL_UART_DTR | ATMEL_UART_DSR |
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ATMEL_UART_DCD | ATMEL_UART_RI);
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/* USART2 on ttyS3 (Rx, Tx) */
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at91_register_uart(AT91RM9200_ID_US2, 3, 0);
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/* USART3 on ttyS4 (Rx, Tx, CTS, RTS) */
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at91_register_uart(AT91RM9200_ID_US3, 4, ATMEL_UART_CTS |
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ATMEL_UART_RTS);
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/* set serial console to ttyS0 (ie, DBGU) */
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at91_set_serial_console(0);
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}
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static void __init cpuat91_init_irq(void)
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{
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at91rm9200_init_interrupts(NULL);
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}
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static struct at91_eth_data __initdata cpuat91_eth_data = {
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.is_rmii = 1,
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};
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static struct at91_usbh_data __initdata cpuat91_usbh_data = {
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.ports = 1,
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};
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static struct at91_udc_data __initdata cpuat91_udc_data = {
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.vbus_pin = AT91_PIN_PC15,
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.pullup_pin = AT91_PIN_PC14,
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};
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static struct at91_mmc_data __initdata cpuat91_mmc_data = {
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.det_pin = AT91_PIN_PC2,
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.wire4 = 1,
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};
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static struct physmap_flash_data cpuat91_flash_data = {
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.width = 2,
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};
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static struct resource cpuat91_flash_resource = {
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.start = AT91_CHIPSELECT_0,
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.end = AT91_CHIPSELECT_0 + SZ_16M - 1,
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.flags = IORESOURCE_MEM,
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};
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static struct platform_device cpuat91_norflash = {
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.name = "physmap-flash",
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.id = 0,
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.dev = {
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.platform_data = &cpuat91_flash_data,
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},
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.resource = &cpuat91_flash_resource,
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.num_resources = 1,
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};
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#ifdef CONFIG_MTD_PLATRAM
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struct platdata_mtd_ram at91_sram_pdata = {
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.mapname = "SRAM",
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.bankwidth = 2,
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};
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static struct resource at91_sram_resource[] = {
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[0] = {
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.start = AT91RM9200_SRAM_BASE,
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.end = AT91RM9200_SRAM_BASE + AT91RM9200_SRAM_SIZE - 1,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device at91_sram = {
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.name = "mtd-ram",
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.id = 0,
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.resource = at91_sram_resource,
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.num_resources = ARRAY_SIZE(at91_sram_resource),
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.dev = {
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.platform_data = &at91_sram_pdata,
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},
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};
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#endif /* MTD_PLATRAM */
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static struct platform_device *platform_devices[] __initdata = {
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&cpuat91_norflash,
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#ifdef CONFIG_MTD_PLATRAM
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&at91_sram,
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#endif /* CONFIG_MTD_PLATRAM */
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};
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static void __init cpuat91_board_init(void)
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{
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/* Serial */
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at91_add_device_serial();
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/* LEDs. */
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at91_gpio_leds(cpuat91_leds, ARRAY_SIZE(cpuat91_leds));
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/* Ethernet */
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at91_add_device_eth(&cpuat91_eth_data);
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/* USB Host */
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at91_add_device_usbh(&cpuat91_usbh_data);
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/* USB Device */
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at91_add_device_udc(&cpuat91_udc_data);
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/* MMC */
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at91_add_device_mmc(0, &cpuat91_mmc_data);
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/* I2C */
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at91_add_device_i2c(NULL, 0);
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/* Platform devices */
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platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
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}
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MACHINE_START(CPUAT91, "Eukrea")
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/* Maintainer: Eric Benard - EUKREA Electromatique */
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.phys_io = AT91_BASE_SYS,
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.io_pg_offst = (AT91_VA_BASE_SYS >> 18) & 0xfffc,
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.boot_params = AT91_SDRAM_BASE + 0x100,
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.timer = &at91rm9200_timer,
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.map_io = cpuat91_map_io,
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.init_irq = cpuat91_init_irq,
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.init_machine = cpuat91_board_init,
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MACHINE_END
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