1 /* 2 * RouterBoard 500 Platform devices 3 * 4 * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org> 5 * Copyright (C) 2007 Florian Fainelli <florian@openwrt.org> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 */ 17 #include <linux/kernel.h> 18 #include <linux/export.h> 19 #include <linux/init.h> 20 #include <linux/ctype.h> 21 #include <linux/string.h> 22 #include <linux/platform_device.h> 23 #include <linux/mtd/rawnand.h> 24 #include <linux/mtd/mtd.h> 25 #include <linux/mtd/partitions.h> 26 #include <linux/gpio.h> 27 #include <linux/gpio_keys.h> 28 #include <linux/input.h> 29 #include <linux/serial_8250.h> 30 31 #include <asm/bootinfo.h> 32 33 #include <asm/mach-rc32434/rc32434.h> 34 #include <asm/mach-rc32434/dma.h> 35 #include <asm/mach-rc32434/dma_v.h> 36 #include <asm/mach-rc32434/eth.h> 37 #include <asm/mach-rc32434/rb.h> 38 #include <asm/mach-rc32434/integ.h> 39 #include <asm/mach-rc32434/gpio.h> 40 #include <asm/mach-rc32434/irq.h> 41 42 #define ETH0_RX_DMA_ADDR (DMA0_BASE_ADDR + 0 * DMA_CHAN_OFFSET) 43 #define ETH0_TX_DMA_ADDR (DMA0_BASE_ADDR + 1 * DMA_CHAN_OFFSET) 44 45 extern unsigned int idt_cpu_freq; 46 47 static struct mpmc_device dev3; 48 49 void set_latch_u5(unsigned char or_mask, unsigned char nand_mask) 50 { 51 unsigned long flags; 52 53 spin_lock_irqsave(&dev3.lock, flags); 54 55 dev3.state = (dev3.state | or_mask) & ~nand_mask; 56 writeb(dev3.state, dev3.base); 57 58 spin_unlock_irqrestore(&dev3.lock, flags); 59 } 60 EXPORT_SYMBOL(set_latch_u5); 61 62 unsigned char get_latch_u5(void) 63 { 64 return dev3.state; 65 } 66 EXPORT_SYMBOL(get_latch_u5); 67 68 static struct resource korina_dev0_res[] = { 69 { 70 .name = "korina_regs", 71 .start = ETH0_BASE_ADDR, 72 .end = ETH0_BASE_ADDR + sizeof(struct eth_regs), 73 .flags = IORESOURCE_MEM, 74 }, { 75 .name = "korina_rx", 76 .start = ETH0_DMA_RX_IRQ, 77 .end = ETH0_DMA_RX_IRQ, 78 .flags = IORESOURCE_IRQ 79 }, { 80 .name = "korina_tx", 81 .start = ETH0_DMA_TX_IRQ, 82 .end = ETH0_DMA_TX_IRQ, 83 .flags = IORESOURCE_IRQ 84 }, { 85 .name = "korina_ovr", 86 .start = ETH0_RX_OVR_IRQ, 87 .end = ETH0_RX_OVR_IRQ, 88 .flags = IORESOURCE_IRQ 89 }, { 90 .name = "korina_und", 91 .start = ETH0_TX_UND_IRQ, 92 .end = ETH0_TX_UND_IRQ, 93 .flags = IORESOURCE_IRQ 94 }, { 95 .name = "korina_dma_rx", 96 .start = ETH0_RX_DMA_ADDR, 97 .end = ETH0_RX_DMA_ADDR + DMA_CHAN_OFFSET - 1, 98 .flags = IORESOURCE_MEM, 99 }, { 100 .name = "korina_dma_tx", 101 .start = ETH0_TX_DMA_ADDR, 102 .end = ETH0_TX_DMA_ADDR + DMA_CHAN_OFFSET - 1, 103 .flags = IORESOURCE_MEM, 104 } 105 }; 106 107 static struct korina_device korina_dev0_data = { 108 .name = "korina0", 109 .mac = {0xde, 0xca, 0xff, 0xc0, 0xff, 0xee} 110 }; 111 112 static struct platform_device korina_dev0 = { 113 .id = -1, 114 .name = "korina", 115 .resource = korina_dev0_res, 116 .num_resources = ARRAY_SIZE(korina_dev0_res), 117 }; 118 119 static struct resource cf_slot0_res[] = { 120 { 121 .name = "cf_membase", 122 .flags = IORESOURCE_MEM 123 }, { 124 .name = "cf_irq", 125 .start = (8 + 4 * 32 + CF_GPIO_NUM), /* 149 */ 126 .end = (8 + 4 * 32 + CF_GPIO_NUM), 127 .flags = IORESOURCE_IRQ 128 } 129 }; 130 131 static struct cf_device cf_slot0_data = { 132 .gpio_pin = CF_GPIO_NUM 133 }; 134 135 static struct platform_device cf_slot0 = { 136 .id = -1, 137 .name = "pata-rb532-cf", 138 .dev.platform_data = &cf_slot0_data, 139 .resource = cf_slot0_res, 140 .num_resources = ARRAY_SIZE(cf_slot0_res), 141 }; 142 143 /* Resources and device for NAND */ 144 static int rb532_dev_ready(struct mtd_info *mtd) 145 { 146 return gpio_get_value(GPIO_RDY); 147 } 148 149 static void rb532_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl) 150 { 151 struct nand_chip *chip = mtd_to_nand(mtd); 152 unsigned char orbits, nandbits; 153 154 if (ctrl & NAND_CTRL_CHANGE) { 155 orbits = (ctrl & NAND_CLE) << 1; 156 orbits |= (ctrl & NAND_ALE) >> 1; 157 158 nandbits = (~ctrl & NAND_CLE) << 1; 159 nandbits |= (~ctrl & NAND_ALE) >> 1; 160 161 set_latch_u5(orbits, nandbits); 162 } 163 if (cmd != NAND_CMD_NONE) 164 writeb(cmd, chip->IO_ADDR_W); 165 } 166 167 static struct resource nand_slot0_res[] = { 168 [0] = { 169 .name = "nand_membase", 170 .flags = IORESOURCE_MEM 171 } 172 }; 173 174 static struct platform_nand_data rb532_nand_data = { 175 .ctrl.dev_ready = rb532_dev_ready, 176 .ctrl.cmd_ctrl = rb532_cmd_ctrl, 177 }; 178 179 static struct platform_device nand_slot0 = { 180 .name = "gen_nand", 181 .id = -1, 182 .resource = nand_slot0_res, 183 .num_resources = ARRAY_SIZE(nand_slot0_res), 184 .dev.platform_data = &rb532_nand_data, 185 }; 186 187 static struct mtd_partition rb532_partition_info[] = { 188 { 189 .name = "Routerboard NAND boot", 190 .offset = 0, 191 .size = 4 * 1024 * 1024, 192 }, { 193 .name = "rootfs", 194 .offset = MTDPART_OFS_NXTBLK, 195 .size = MTDPART_SIZ_FULL, 196 } 197 }; 198 199 static struct platform_device rb532_led = { 200 .name = "rb532-led", 201 .id = -1, 202 }; 203 204 static struct platform_device rb532_button = { 205 .name = "rb532-button", 206 .id = -1, 207 }; 208 209 static struct resource rb532_wdt_res[] = { 210 { 211 .name = "rb532_wdt_res", 212 .start = INTEG0_BASE_ADDR, 213 .end = INTEG0_BASE_ADDR + sizeof(struct integ), 214 .flags = IORESOURCE_MEM, 215 } 216 }; 217 218 static struct platform_device rb532_wdt = { 219 .name = "rc32434_wdt", 220 .id = -1, 221 .resource = rb532_wdt_res, 222 .num_resources = ARRAY_SIZE(rb532_wdt_res), 223 }; 224 225 static struct plat_serial8250_port rb532_uart_res[] = { 226 { 227 .type = PORT_16550A, 228 .membase = (char *)KSEG1ADDR(REGBASE + UART0BASE), 229 .irq = UART0_IRQ, 230 .regshift = 2, 231 .iotype = UPIO_MEM, 232 .flags = UPF_BOOT_AUTOCONF, 233 }, 234 { 235 .flags = 0, 236 } 237 }; 238 239 static struct platform_device rb532_uart = { 240 .name = "serial8250", 241 .id = PLAT8250_DEV_PLATFORM, 242 .dev.platform_data = &rb532_uart_res, 243 }; 244 245 static struct platform_device *rb532_devs[] = { 246 &korina_dev0, 247 &nand_slot0, 248 &cf_slot0, 249 &rb532_led, 250 &rb532_button, 251 &rb532_uart, 252 &rb532_wdt 253 }; 254 255 /* NAND definitions */ 256 #define NAND_CHIP_DELAY 25 257 258 static void __init rb532_nand_setup(void) 259 { 260 switch (mips_machtype) { 261 case MACH_MIKROTIK_RB532A: 262 set_latch_u5(LO_FOFF | LO_CEX, 263 LO_ULED | LO_ALE | LO_CLE | LO_WPX); 264 break; 265 default: 266 set_latch_u5(LO_WPX | LO_FOFF | LO_CEX, 267 LO_ULED | LO_ALE | LO_CLE); 268 break; 269 } 270 271 /* Setup NAND specific settings */ 272 rb532_nand_data.chip.nr_chips = 1; 273 rb532_nand_data.chip.nr_partitions = ARRAY_SIZE(rb532_partition_info); 274 rb532_nand_data.chip.partitions = rb532_partition_info; 275 rb532_nand_data.chip.chip_delay = NAND_CHIP_DELAY; 276 } 277 278 279 static int __init plat_setup_devices(void) 280 { 281 /* Look for the CF card reader */ 282 if (!readl(IDT434_REG_BASE + DEV1MASK)) 283 rb532_devs[2] = NULL; /* disable cf_slot0 at index 2 */ 284 else { 285 cf_slot0_res[0].start = 286 readl(IDT434_REG_BASE + DEV1BASE); 287 cf_slot0_res[0].end = cf_slot0_res[0].start + 0x1000; 288 } 289 290 /* Read the NAND resources from the device controller */ 291 nand_slot0_res[0].start = readl(IDT434_REG_BASE + DEV2BASE); 292 nand_slot0_res[0].end = nand_slot0_res[0].start + 0x1000; 293 294 /* Read and map device controller 3 */ 295 dev3.base = ioremap_nocache(readl(IDT434_REG_BASE + DEV3BASE), 1); 296 297 if (!dev3.base) { 298 printk(KERN_ERR "rb532: cannot remap device controller 3\n"); 299 return -ENXIO; 300 } 301 302 /* Initialise the NAND device */ 303 rb532_nand_setup(); 304 305 /* set the uart clock to the current cpu frequency */ 306 rb532_uart_res[0].uartclk = idt_cpu_freq; 307 308 dev_set_drvdata(&korina_dev0.dev, &korina_dev0_data); 309 310 return platform_add_devices(rb532_devs, ARRAY_SIZE(rb532_devs)); 311 } 312 313 static int __init setup_kmac(char *s) 314 { 315 printk(KERN_INFO "korina mac = %s\n", s); 316 if (!mac_pton(s, korina_dev0_data.mac)) { 317 printk(KERN_ERR "Invalid mac\n"); 318 return -EINVAL; 319 } 320 return 0; 321 } 322 323 __setup("kmac=", setup_kmac); 324 325 arch_initcall(plat_setup_devices); 326