1 /* 2 * This file is subject to the terms and conditions of the GNU General Public 3 * License. See the file "COPYING" in the main directory of this archive 4 * for more details. 5 * 6 * Copyright (C) 2006, 07 MIPS Technologies, Inc. 7 * written by Ralf Baechle (ralf@linux-mips.org) 8 * written by Ralf Baechle <ralf@linux-mips.org> 9 * 10 * Copyright (C) 2008 Wind River Systems, Inc. 11 * updated by Tiejun Chen <tiejun.chen@windriver.com> 12 * 13 * 1. Probe driver for the Malta's UART ports: 14 * 15 * o 2 ports in the SMC SuperIO 16 * o 1 port in the CBUS UART, a discrete 16550 which normally is only used 17 * for bringups. 18 * 19 * We don't use 8250_platform.c on Malta as it would result in the CBUS 20 * UART becoming ttyS0. 21 * 22 * 2. Register RTC-CMOS platform device on Malta. 23 */ 24 #include <linux/init.h> 25 #include <linux/serial_8250.h> 26 #include <linux/mc146818rtc.h> 27 #include <linux/module.h> 28 #include <linux/irq.h> 29 #include <linux/mtd/partitions.h> 30 #include <linux/mtd/physmap.h> 31 #include <linux/platform_device.h> 32 #include <asm/mips-boards/maltaint.h> 33 #include <mtd/mtd-abi.h> 34 35 #define SMC_PORT(base, int) \ 36 { \ 37 .iobase = base, \ 38 .irq = int, \ 39 .uartclk = 1843200, \ 40 .iotype = UPIO_PORT, \ 41 .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, \ 42 .regshift = 0, \ 43 } 44 45 #define CBUS_UART_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP) 46 47 static struct plat_serial8250_port uart8250_data[] = { 48 SMC_PORT(0x3F8, 4), 49 SMC_PORT(0x2F8, 3), 50 #ifndef CONFIG_MIPS_CMP 51 { 52 .mapbase = 0x1f000900, /* The CBUS UART */ 53 .irq = MIPS_CPU_IRQ_BASE + MIPSCPU_INT_MB2, 54 .uartclk = 3686400, /* Twice the usual clk! */ 55 .iotype = UPIO_MEM32, 56 .flags = CBUS_UART_FLAGS, 57 .regshift = 3, 58 }, 59 #endif 60 { }, 61 }; 62 63 static struct platform_device malta_uart8250_device = { 64 .name = "serial8250", 65 .id = PLAT8250_DEV_PLATFORM, 66 .dev = { 67 .platform_data = uart8250_data, 68 }, 69 }; 70 71 struct resource malta_rtc_resources[] = { 72 { 73 .start = RTC_PORT(0), 74 .end = RTC_PORT(7), 75 .flags = IORESOURCE_IO, 76 }, { 77 .start = RTC_IRQ, 78 .end = RTC_IRQ, 79 .flags = IORESOURCE_IRQ, 80 } 81 }; 82 83 static struct platform_device malta_rtc_device = { 84 .name = "rtc_cmos", 85 .id = -1, 86 .resource = malta_rtc_resources, 87 .num_resources = ARRAY_SIZE(malta_rtc_resources), 88 }; 89 90 static struct mtd_partition malta_mtd_partitions[] = { 91 { 92 .name = "YAMON", 93 .offset = 0x0, 94 .size = 0x100000, 95 .mask_flags = MTD_WRITEABLE 96 }, { 97 .name = "User FS", 98 .offset = 0x100000, 99 .size = 0x2e0000 100 }, { 101 .name = "Board Config", 102 .offset = 0x3e0000, 103 .size = 0x020000, 104 .mask_flags = MTD_WRITEABLE 105 } 106 }; 107 108 static struct physmap_flash_data malta_flash_data = { 109 .width = 4, 110 .nr_parts = ARRAY_SIZE(malta_mtd_partitions), 111 .parts = malta_mtd_partitions 112 }; 113 114 static struct resource malta_flash_resource = { 115 .start = 0x1e000000, 116 .end = 0x1e3fffff, 117 .flags = IORESOURCE_MEM 118 }; 119 120 static struct platform_device malta_flash_device = { 121 .name = "physmap-flash", 122 .id = 0, 123 .dev = { 124 .platform_data = &malta_flash_data, 125 }, 126 .num_resources = 1, 127 .resource = &malta_flash_resource, 128 }; 129 130 static struct platform_device *malta_devices[] __initdata = { 131 &malta_uart8250_device, 132 &malta_rtc_device, 133 &malta_flash_device, 134 }; 135 136 static int __init malta_add_devices(void) 137 { 138 int err; 139 140 err = platform_add_devices(malta_devices, ARRAY_SIZE(malta_devices)); 141 if (err) 142 return err; 143 144 return 0; 145 } 146 147 device_initcall(malta_add_devices); 148