diff options
Diffstat (limited to 'kernel/arch/mips/alchemy/board-mtx1.c')
| -rw-r--r-- | kernel/arch/mips/alchemy/board-mtx1.c | 313 |
1 files changed, 313 insertions, 0 deletions
diff --git a/kernel/arch/mips/alchemy/board-mtx1.c b/kernel/arch/mips/alchemy/board-mtx1.c new file mode 100644 index 000000000..1e3b10238 --- /dev/null +++ b/kernel/arch/mips/alchemy/board-mtx1.c @@ -0,0 +1,313 @@ +/* + * MTX-1 platform devices registration (Au1500) + * + * Copyright (C) 2007-2009, Florian Fainelli <florian@openwrt.org> + * + * 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/interrupt.h> +#include <linux/kernel.h> +#include <linux/platform_device.h> +#include <linux/leds.h> +#include <linux/gpio.h> +#include <linux/gpio_keys.h> +#include <linux/input.h> +#include <linux/mtd/partitions.h> +#include <linux/mtd/physmap.h> +#include <mtd/mtd-abi.h> +#include <asm/bootinfo.h> +#include <asm/reboot.h> +#include <asm/mach-au1x00/au1000.h> +#include <asm/mach-au1x00/au1xxx_eth.h> +#include <prom.h> + +const char *get_system_type(void) +{ + return "MTX-1"; +} + +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 || kstrtoul(memsize_str, 0, &memsize)) + memsize = 0x04000000; + add_memory_region(0, memsize, BOOT_MEM_RAM); +} + +void prom_putchar(unsigned char c) +{ + alchemy_uart_putchar(AU1000_UART0_PHYS_ADDR, c); +} + +static void mtx1_reset(char *c) +{ + /* Jump to the reset vector */ + __asm__ __volatile__("jr\t%0" : : "r"(0xbfc00000)); +} + +static void mtx1_power_off(void) +{ + while (1) + asm volatile ( + " .set mips32 \n" + " wait \n" + " .set mips0 \n"); +} + +void __init board_setup(void) +{ +#if IS_ENABLED(CONFIG_USB_OHCI_HCD) + /* Enable USB power switch */ + alchemy_gpio_direction_output(204, 0); +#endif /* IS_ENABLED(CONFIG_USB_OHCI_HCD) */ + + /* Initialize sys_pinfunc */ + alchemy_wrsys(SYS_PF_NI2, AU1000_SYS_PINFUNC); + + /* Initialize GPIO */ + alchemy_wrsys(~0, AU1000_SYS_TRIOUTCLR); + alchemy_gpio_direction_output(0, 0); /* Disable M66EN (PCI 66MHz) */ + alchemy_gpio_direction_output(3, 1); /* Disable PCI CLKRUN# */ + alchemy_gpio_direction_output(1, 1); /* Enable EXT_IO3 */ + alchemy_gpio_direction_output(5, 0); /* Disable eth PHY TX_ER */ + + /* Enable LED and set it to green */ + alchemy_gpio_direction_output(211, 1); /* green on */ + alchemy_gpio_direction_output(212, 0); /* red off */ + + pm_power_off = mtx1_power_off; + _machine_halt = mtx1_power_off; + _machine_restart = mtx1_reset; + + printk(KERN_INFO "4G Systems MTX-1 Board\n"); +} + +/******************************************************************************/ + +static struct gpio_keys_button mtx1_gpio_button[] = { + { + .gpio = 207, + .code = BTN_0, + .desc = "System button", + } +}; + +static struct gpio_keys_platform_data mtx1_buttons_data = { + .buttons = mtx1_gpio_button, + .nbuttons = ARRAY_SIZE(mtx1_gpio_button), +}; + +static struct platform_device mtx1_button = { + .name = "gpio-keys", + .id = -1, + .dev = { + .platform_data = &mtx1_buttons_data, + } +}; + +static struct resource mtx1_wdt_res[] = { + [0] = { + .start = 215, + .end = 215, + .name = "mtx1-wdt-gpio", + .flags = IORESOURCE_IRQ, + } +}; + +static struct platform_device mtx1_wdt = { + .name = "mtx1-wdt", + .id = 0, + .num_resources = ARRAY_SIZE(mtx1_wdt_res), + .resource = mtx1_wdt_res, +}; + +static struct gpio_led default_leds[] = { + { + .name = "mtx1:green", + .gpio = 211, + }, { + .name = "mtx1:red", + .gpio = 212, + }, +}; + +static struct gpio_led_platform_data mtx1_led_data = { + .num_leds = ARRAY_SIZE(default_leds), + .leds = default_leds, +}; + +static struct platform_device mtx1_gpio_leds = { + .name = "leds-gpio", + .id = -1, + .dev = { + .platform_data = &mtx1_led_data, + } +}; + +static struct mtd_partition mtx1_mtd_partitions[] = { + { + .name = "filesystem", + .size = 0x01C00000, + .offset = 0, + }, + { + .name = "yamon", + .size = 0x00100000, + .offset = MTDPART_OFS_APPEND, + .mask_flags = MTD_WRITEABLE, + }, + { + .name = "kernel", + .size = 0x002c0000, + .offset = MTDPART_OFS_APPEND, + }, + { + .name = "yamon env", + .size = 0x00040000, + .offset = MTDPART_OFS_APPEND, + }, +}; + +static struct physmap_flash_data mtx1_flash_data = { + .width = 4, + .nr_parts = 4, + .parts = mtx1_mtd_partitions, +}; + +static struct resource mtx1_mtd_resource = { + .start = 0x1e000000, + .end = 0x1fffffff, + .flags = IORESOURCE_MEM, +}; + +static struct platform_device mtx1_mtd = { + .name = "physmap-flash", + .dev = { + .platform_data = &mtx1_flash_data, + }, + .num_resources = 1, + .resource = &mtx1_mtd_resource, +}; + +static struct resource alchemy_pci_host_res[] = { + [0] = { + .start = AU1500_PCI_PHYS_ADDR, + .end = AU1500_PCI_PHYS_ADDR + 0xfff, + .flags = IORESOURCE_MEM, + }, +}; + +static int mtx1_pci_idsel(unsigned int devsel, int assert) +{ + /* This function is only necessary to support a proprietary Cardbus + * adapter on the mtx-1 "singleboard" variant. It triggers a custom + * logic chip connected to EXT_IO3 (GPIO1) to suppress IDSEL signals. + */ + udelay(1); + + if (assert && devsel != 0) + /* Suppress signal to Cardbus */ + alchemy_gpio_set_value(1, 0); /* set EXT_IO3 OFF */ + else + alchemy_gpio_set_value(1, 1); /* set EXT_IO3 ON */ + + udelay(1); + return 1; +} + +static const char mtx1_irqtab[][5] = { + [0] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 00 - AdapterA-Slot0 (top) */ + [1] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 01 - AdapterA-Slot1 (bottom) */ + [2] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 02 - AdapterB-Slot0 (top) */ + [3] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 03 - AdapterB-Slot1 (bottom) */ + [4] = { -1, AU1500_PCI_INTA, AU1500_PCI_INTB, 0xff, 0xff }, /* IDSEL 04 - AdapterC-Slot0 (top) */ + [5] = { -1, AU1500_PCI_INTB, AU1500_PCI_INTA, 0xff, 0xff }, /* IDSEL 05 - AdapterC-Slot1 (bottom) */ + [6] = { -1, AU1500_PCI_INTC, AU1500_PCI_INTD, 0xff, 0xff }, /* IDSEL 06 - AdapterD-Slot0 (top) */ + [7] = { -1, AU1500_PCI_INTD, AU1500_PCI_INTC, 0xff, 0xff }, /* IDSEL 07 - AdapterD-Slot1 (bottom) */ +}; + +static int mtx1_map_pci_irq(const struct pci_dev *d, u8 slot, u8 pin) +{ + return mtx1_irqtab[slot][pin]; +} + +static struct alchemy_pci_platdata mtx1_pci_pd = { + .board_map_irq = mtx1_map_pci_irq, + .board_pci_idsel = mtx1_pci_idsel, + .pci_cfg_set = PCI_CONFIG_AEN | PCI_CONFIG_R2H | PCI_CONFIG_R1H | + PCI_CONFIG_CH | +#if defined(__MIPSEB__) + PCI_CONFIG_SIC_HWA_DAT | PCI_CONFIG_SM, +#else + 0, +#endif +}; + +static struct platform_device mtx1_pci_host = { + .dev.platform_data = &mtx1_pci_pd, + .name = "alchemy-pci", + .id = 0, + .num_resources = ARRAY_SIZE(alchemy_pci_host_res), + .resource = alchemy_pci_host_res, +}; + +static struct platform_device *mtx1_devs[] __initdata = { + &mtx1_pci_host, + &mtx1_gpio_leds, + &mtx1_wdt, + &mtx1_button, + &mtx1_mtd, +}; + +static struct au1000_eth_platform_data mtx1_au1000_eth0_pdata = { + .phy_search_highest_addr = 1, + .phy1_search_mac0 = 1, +}; + +static int __init mtx1_register_devices(void) +{ + int rc; + + irq_set_irq_type(AU1500_GPIO204_INT, IRQ_TYPE_LEVEL_HIGH); + irq_set_irq_type(AU1500_GPIO201_INT, IRQ_TYPE_LEVEL_LOW); + irq_set_irq_type(AU1500_GPIO202_INT, IRQ_TYPE_LEVEL_LOW); + irq_set_irq_type(AU1500_GPIO203_INT, IRQ_TYPE_LEVEL_LOW); + irq_set_irq_type(AU1500_GPIO205_INT, IRQ_TYPE_LEVEL_LOW); + + au1xxx_override_eth_cfg(0, &mtx1_au1000_eth0_pdata); + + rc = gpio_request(mtx1_gpio_button[0].gpio, + mtx1_gpio_button[0].desc); + if (rc < 0) { + printk(KERN_INFO "mtx1: failed to request %d\n", + mtx1_gpio_button[0].gpio); + goto out; + } + gpio_direction_input(mtx1_gpio_button[0].gpio); +out: + return platform_add_devices(mtx1_devs, ARRAY_SIZE(mtx1_devs)); +} +arch_initcall(mtx1_register_devices); |