diff options
author | Wolfgang Grandegger <wg@grandegger.com> | 2010-07-15 09:21:23 (GMT) |
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committer | Ralf Baechle <ralf@linux-mips.org> | 2010-08-05 12:26:09 (GMT) |
commit | cb8f55b9207df96ccc332748eb3d154cd2e8014f (patch) | |
tree | 7bb11d3b2b30daa660f8c040472b498d90b5bf74 /arch/mips/alchemy/gpr | |
parent | f66736532a6bc593a2d7cda68835a79c23836f1b (diff) | |
download | linux-fsl-qoriq-cb8f55b9207df96ccc332748eb3d154cd2e8014f.tar.xz |
MIPS: Alchemy: Add basic support for the GPR board
From: Wolfgang Grandegger <wg@denx.de>
Add basic support for the General Purpose Router (GPR) board from
Trapeze ITS.
Signed-off-by: Wolfgang Grandegger <wg@denx.de>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1460/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/alchemy/gpr')
-rw-r--r-- | arch/mips/alchemy/gpr/Makefile | 8 | ||||
-rw-r--r-- | arch/mips/alchemy/gpr/board_setup.c | 93 | ||||
-rw-r--r-- | arch/mips/alchemy/gpr/init.c | 63 | ||||
-rw-r--r-- | arch/mips/alchemy/gpr/platform.c | 183 |
4 files changed, 347 insertions, 0 deletions
diff --git a/arch/mips/alchemy/gpr/Makefile b/arch/mips/alchemy/gpr/Makefile new file mode 100644 index 0000000..cb73fe2 --- /dev/null +++ b/arch/mips/alchemy/gpr/Makefile @@ -0,0 +1,8 @@ +# +# Copyright 2003 MontaVista Software Inc. +# Author: MontaVista Software, Inc. <source@mvista.com> +# +# Makefile for Trapeze ITS GPR board. +# + +obj-y += board_setup.o init.o platform.o diff --git a/arch/mips/alchemy/gpr/board_setup.c b/arch/mips/alchemy/gpr/board_setup.c new file mode 100644 index 0000000..ad2e3f1 --- /dev/null +++ b/arch/mips/alchemy/gpr/board_setup.c @@ -0,0 +1,93 @@ +/* + * Copyright 2010 Wolfgang Grandegger <wg@denx.de> + * + * Copyright 2000-2003, 2008 MontaVista Software Inc. + * Author: MontaVista Software, Inc. <source@mvista.com> + * + * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * 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., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/gpio.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/pm.h> + +#include <asm/reboot.h> +#include <asm/mach-au1x00/au1000.h> + +#include <prom.h> + +#define UART1_ADDR KSEG1ADDR(UART1_PHYS_ADDR) +#define UART3_ADDR KSEG1ADDR(UART3_PHYS_ADDR) + +char irq_tab_alchemy[][5] __initdata = { + [0] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, 0xff, 0xff }, +}; + +static void gpr_reset(char *c) +{ + /* switch System-LED to orange (red# and green# on) */ + alchemy_gpio_direction_output(4, 0); + alchemy_gpio_direction_output(5, 0); + + /* trigger watchdog to reset board in 200ms */ + printk(KERN_EMERG "Triggering watchdog soft reset...\n"); + raw_local_irq_disable(); + alchemy_gpio_direction_output(1, 0); + udelay(1); + alchemy_gpio_set_value(1, 1); + while (1) + cpu_wait(); +} + +static void gpr_power_off(void) +{ + while (1) + cpu_wait(); +} + +void __init board_setup(void) +{ + printk(KERN_INFO "Tarpeze ITS GPR board\n"); + + pm_power_off = gpr_power_off; + _machine_halt = gpr_power_off; + _machine_restart = gpr_reset; + + /* Enable UART3 */ + au_writel(0x1, UART3_ADDR + UART_MOD_CNTRL);/* clock enable (CE) */ + au_writel(0x3, UART3_ADDR + UART_MOD_CNTRL); /* CE and "enable" */ + /* Enable UART1 */ + au_writel(0x1, UART1_ADDR + UART_MOD_CNTRL); /* clock enable (CE) */ + au_writel(0x3, UART1_ADDR + UART_MOD_CNTRL); /* CE and "enable" */ + + /* Take away Reset of UMTS-card */ + alchemy_gpio_direction_output(215, 1); + +#ifdef CONFIG_PCI +#if defined(__MIPSEB__) + au_writel(0xf | (2 << 6) | (1 << 4), Au1500_PCI_CFG); +#else + au_writel(0xf, Au1500_PCI_CFG); +#endif +#endif +} diff --git a/arch/mips/alchemy/gpr/init.c b/arch/mips/alchemy/gpr/init.c new file mode 100644 index 0000000..f044f4c --- /dev/null +++ b/arch/mips/alchemy/gpr/init.c @@ -0,0 +1,63 @@ +/* + * Copyright 2010 Wolfgang Grandegger <wg@denx.de> + * + * Copyright 2003, 2008 MontaVista Software Inc. + * Author: MontaVista Software, Inc. <source@mvista.com> + * + * 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 SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN + * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + * 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., + * 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#include <linux/init.h> +#include <linux/kernel.h> + +#include <asm/bootinfo.h> +#include <asm/mach-au1x00/au1000.h> + +#include <prom.h> + +const char *get_system_type(void) +{ + return "GPR"; +} + +void __init prom_init(void) +{ + unsigned char *memsize_str; + unsigned long memsize; + + prom_argc = fw_arg0; + prom_argv = (char **)fw_arg1; + prom_envp = (char **)fw_arg2; + + prom_init_cmdline(); + + memsize_str = prom_getenv("memsize"); + if (!memsize_str) + memsize = 0x04000000; + else + strict_strtoul(memsize_str, 0, &memsize); + add_memory_region(0, memsize, BOOT_MEM_RAM); +} + +void prom_putchar(unsigned char c) +{ + alchemy_uart_putchar(UART0_PHYS_ADDR, c); +} diff --git a/arch/mips/alchemy/gpr/platform.c b/arch/mips/alchemy/gpr/platform.c new file mode 100644 index 0000000..14b4662 --- /dev/null +++ b/arch/mips/alchemy/gpr/platform.c @@ -0,0 +1,183 @@ +/* + * GPR board platform device registration + * + * Copyright (C) 2010 Wolfgang Grandegger <wg@denx.de> + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/mtd/partitions.h> +#include <linux/mtd/physmap.h> +#include <linux/leds.h> +#include <linux/gpio.h> +#include <linux/i2c.h> +#include <linux/i2c-gpio.h> + +#include <asm/mach-au1x00/au1000.h> + +/* + * Watchdog + */ +static struct resource gpr_wdt_resource[] = { + [0] = { + .start = 1, + .end = 1, + .name = "gpr-adm6320-wdt", + .flags = IORESOURCE_IRQ, + } +}; + +static struct platform_device gpr_wdt_device = { + .name = "adm6320-wdt", + .id = 0, + .num_resources = ARRAY_SIZE(gpr_wdt_resource), + .resource = gpr_wdt_resource, +}; + +/* + * FLASH + * + * 0x00000000-0x00200000 : "kernel" + * 0x00200000-0x00a00000 : "rootfs" + * 0x01d00000-0x01f00000 : "config" + * 0x01c00000-0x01d00000 : "yamon" + * 0x01d00000-0x01d40000 : "yamon env vars" + * 0x00000000-0x00a00000 : "kernel+rootfs" + */ +static struct mtd_partition gpr_mtd_partitions[] = { + { + .name = "kernel", + .size = 0x00200000, + .offset = 0, + }, + { + .name = "rootfs", + .size = 0x00800000, + .offset = MTDPART_OFS_APPEND, + .mask_flags = MTD_WRITEABLE, + }, + { + .name = "config", + .size = 0x00200000, + .offset = 0x01d00000, + }, + { + .name = "yamon", + .size = 0x00100000, + .offset = 0x01c00000, + }, + { + .name = "yamon env vars", + .size = 0x00040000, + .offset = MTDPART_OFS_APPEND, + }, + { + .name = "kernel+rootfs", + .size = 0x00a00000, + .offset = 0, + }, +}; + +static struct physmap_flash_data gpr_flash_data = { + .width = 4, + .nr_parts = ARRAY_SIZE(gpr_mtd_partitions), + .parts = gpr_mtd_partitions, +}; + +static struct resource gpr_mtd_resource = { + .start = 0x1e000000, + .end = 0x1fffffff, + .flags = IORESOURCE_MEM, +}; + +static struct platform_device gpr_mtd_device = { + .name = "physmap-flash", + .dev = { + .platform_data = &gpr_flash_data, + }, + .num_resources = 1, + .resource = &gpr_mtd_resource, +}; + +/* + * LEDs + */ +static struct gpio_led gpr_gpio_leds[] = { + { /* green */ + .name = "gpr:green", + .gpio = 4, + .active_low = 1, + }, + { /* red */ + .name = "gpr:red", + .gpio = 5, + .active_low = 1, + } +}; + +static struct gpio_led_platform_data gpr_led_data = { + .num_leds = ARRAY_SIZE(gpr_gpio_leds), + .leds = gpr_gpio_leds, +}; + +static struct platform_device gpr_led_devices = { + .name = "leds-gpio", + .id = -1, + .dev = { + .platform_data = &gpr_led_data, + } +}; + +/* + * I2C + */ +static struct i2c_gpio_platform_data gpr_i2c_data = { + .sda_pin = 209, + .sda_is_open_drain = 1, + .scl_pin = 210, + .scl_is_open_drain = 1, + .udelay = 2, /* ~100 kHz */ + .timeout = HZ, + }; + +static struct platform_device gpr_i2c_device = { + .name = "i2c-gpio", + .id = -1, + .dev.platform_data = &gpr_i2c_data, +}; + +static struct i2c_board_info gpr_i2c_info[] __initdata = { + { + I2C_BOARD_INFO("lm83", 0x18), + .type = "lm83" + } +}; + +static struct platform_device *gpr_devices[] __initdata = { + &gpr_wdt_device, + &gpr_mtd_device, + &gpr_i2c_device, + &gpr_led_devices, +}; + +static int __init gpr_dev_init(void) +{ + i2c_register_board_info(0, gpr_i2c_info, ARRAY_SIZE(gpr_i2c_info)); + + return platform_add_devices(gpr_devices, ARRAY_SIZE(gpr_devices)); +} +device_initcall(gpr_dev_init); |