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/init.h> 19 #include <linux/ctype.h> 20 #include <linux/string.h> 21 #include <linux/platform_device.h> 22 #include <linux/mtd/nand.h> 23 #include <linux/mtd/mtd.h> 24 #include <linux/mtd/partitions.h> 25 #include <linux/gpio_keys.h> 26 #include <linux/input.h> 27 #include <linux/serial_8250.h> 28 29 #include <asm/bootinfo.h> 30 31 #include <asm/mach-rc32434/rc32434.h> 32 #include <asm/mach-rc32434/dma.h> 33 #include <asm/mach-rc32434/dma_v.h> 34 #include <asm/mach-rc32434/eth.h> 35 #include <asm/mach-rc32434/rb.h> 36 #include <asm/mach-rc32434/integ.h> 37 #include <asm/mach-rc32434/gpio.h> 38 #include <asm/mach-rc32434/irq.h> 39 40 #define ETH0_RX_DMA_ADDR (DMA0_BASE_ADDR + 0 * DMA_CHAN_OFFSET) 41 #define ETH0_TX_DMA_ADDR (DMA0_BASE_ADDR + 1 * DMA_CHAN_OFFSET) 42 43 extern unsigned int idt_cpu_freq; 44 45 static struct mpmc_device dev3; 46 47 void set_latch_u5(unsigned char or_mask, unsigned char nand_mask) 48 { 49 unsigned long flags; 50 51 spin_lock_irqsave(&dev3.lock, flags); 52 53 dev3.state = (dev3.state | or_mask) & ~nand_mask; 54 writeb(dev3.state, dev3.base); 55 56 spin_unlock_irqrestore(&dev3.lock, flags); 57 } 58 EXPORT_SYMBOL(set_latch_u5); 59 60 unsigned char get_latch_u5(void) 61 { 62 return dev3.state; 63 } 64 EXPORT_SYMBOL(get_latch_u5); 65 66 static struct resource korina_dev0_res[] = { 67 { 68 .name = "korina_regs", 69 .start = ETH0_BASE_ADDR, 70 .end = ETH0_BASE_ADDR + sizeof(struct eth_regs), 71 .flags = IORESOURCE_MEM, 72 }, { 73 .name = "korina_rx", 74 .start = ETH0_DMA_RX_IRQ, 75 .end = ETH0_DMA_RX_IRQ, 76 .flags = IORESOURCE_IRQ 77 }, { 78 .name = "korina_tx", 79 .start = ETH0_DMA_TX_IRQ, 80 .end = ETH0_DMA_TX_IRQ, 81 .flags = IORESOURCE_IRQ 82 }, { 83 .name = "korina_ovr", 84 .start = ETH0_RX_OVR_IRQ, 85 .end = ETH0_RX_OVR_IRQ, 86 .flags = IORESOURCE_IRQ 87 }, { 88 .name = "korina_und", 89 .start = ETH0_TX_UND_IRQ, 90 .end = ETH0_TX_UND_IRQ, 91 .flags = IORESOURCE_IRQ 92 }, { 93 .name = "korina_dma_rx", 94 .start = ETH0_RX_DMA_ADDR, 95 .end = ETH0_RX_DMA_ADDR + DMA_CHAN_OFFSET - 1, 96 .flags = IORESOURCE_MEM, 97 }, { 98 .name = "korina_dma_tx", 99 .start = ETH0_TX_DMA_ADDR, 100 .end = ETH0_TX_DMA_ADDR + DMA_CHAN_OFFSET - 1, 101 .flags = IORESOURCE_MEM, 102 } 103 }; 104 105 static struct korina_device korina_dev0_data = { 106 .name = "korina0", 107 .mac = {0xde, 0xca, 0xff, 0xc0, 0xff, 0xee} 108 }; 109 110 static struct platform_device korina_dev0 = { 111 .id = -1, 112 .name = "korina", 113 .resource = korina_dev0_res, 114 .num_resources = ARRAY_SIZE(korina_dev0_res), 115 }; 116 117 static struct resource cf_slot0_res[] = { 118 { 119 .name = "cf_membase", 120 .flags = IORESOURCE_MEM 121 }, { 122 .name = "cf_irq", 123 .start = (8 + 4 * 32 + CF_GPIO_NUM), /* 149 */ 124 .end = (8 + 4 * 32 + CF_GPIO_NUM), 125 .flags = IORESOURCE_IRQ 126 } 127 }; 128 129 static struct cf_device cf_slot0_data = { 130 .gpio_pin = CF_GPIO_NUM 131 }; 132 133 static struct platform_device cf_slot0 = { 134 .id = -1, 135 .name = "pata-rb532-cf", 136 .dev.platform_data = &cf_slot0_data, 137 .resource = cf_slot0_res, 138 .num_resources = ARRAY_SIZE(cf_slot0_res), 139 }; 140 141 /* Resources and device for NAND */ 142 static int rb532_dev_ready(struct mtd_info *mtd) 143 { 144 return gpio_get_value(GPIO_RDY); 145 } 146 147 static void rb532_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl) 148 { 149 struct nand_chip *chip = mtd->priv; 150 unsigned char orbits, nandbits; 151 152 if (ctrl & NAND_CTRL_CHANGE) { 153 orbits = (ctrl & NAND_CLE) << 1; 154 orbits |= (ctrl & NAND_ALE) >> 1; 155 156 nandbits = (~ctrl & NAND_CLE) << 1; 157 nandbits |= (~ctrl & NAND_ALE) >> 1; 158 159 set_latch_u5(orbits, nandbits); 160 } 161 if (cmd != NAND_CMD_NONE) 162 writeb(cmd, chip->IO_ADDR_W); 163 } 164 165 static struct resource nand_slot0_res[] = { 166 [0] = { 167 .name = "nand_membase", 168 .flags = IORESOURCE_MEM 169 } 170 }; 171 172 static struct platform_nand_data rb532_nand_data = { 173 .ctrl.dev_ready = rb532_dev_ready, 174 .ctrl.cmd_ctrl = rb532_cmd_ctrl, 175 }; 176 177 static struct platform_device nand_slot0 = { 178 .name = "gen_nand", 179 .id = -1, 180 .resource = nand_slot0_res, 181 .num_resources = ARRAY_SIZE(nand_slot0_res), 182 .dev.platform_data = &rb532_nand_data, 183 }; 184 185 static struct mtd_partition rb532_partition_info[] = { 186 { 187 .name = "Routerboard NAND boot", 188 .offset = 0, 189 .size = 4 * 1024 * 1024, 190 }, { 191 .name = "rootfs", 192 .offset = MTDPART_OFS_NXTBLK, 193 .size = MTDPART_SIZ_FULL, 194 } 195 }; 196 197 static struct platform_device rb532_led = { 198 .name = "rb532-led", 199 .id = -1, 200 }; 201 202 static struct platform_device rb532_button = { 203 .name = "rb532-button", 204 .id = -1, 205 }; 206 207 static struct resource rb532_wdt_res[] = { 208 { 209 .name = "rb532_wdt_res", 210 .start = INTEG0_BASE_ADDR, 211 .end = INTEG0_BASE_ADDR + sizeof(struct integ), 212 .flags = IORESOURCE_MEM, 213 } 214 }; 215 216 static struct platform_device rb532_wdt = { 217 .name = "rc32434_wdt", 218 .id = -1, 219 .resource = rb532_wdt_res, 220 .num_resources = ARRAY_SIZE(rb532_wdt_res), 221 }; 222 223 static struct plat_serial8250_port rb532_uart_res[] = { 224 { 225 .membase = (char *)KSEG1ADDR(REGBASE + UART0BASE), 226 .irq = UART0_IRQ, 227 .regshift = 2, 228 .iotype = UPIO_MEM, 229 .flags = UPF_BOOT_AUTOCONF, 230 }, 231 { 232 .flags = 0, 233 } 234 }; 235 236 static struct platform_device rb532_uart = { 237 .name = "serial8250", 238 .id = PLAT8250_DEV_PLATFORM, 239 .dev.platform_data = &rb532_uart_res, 240 }; 241 242 static struct platform_device *rb532_devs[] = { 243 &korina_dev0, 244 &nand_slot0, 245 &cf_slot0, 246 &rb532_led, 247 &rb532_button, 248 &rb532_uart, 249 &rb532_wdt 250 }; 251 252 static void __init parse_mac_addr(char *macstr) 253 { 254 int i, h, l; 255 256 for (i = 0; i < 6; i++) { 257 if (i != 5 && *(macstr + 2) != ':') 258 return; 259 260 h = hex_to_bin(*macstr++); 261 if (h == -1) 262 return; 263 264 l = hex_to_bin(*macstr++); 265 if (l == -1) 266 return; 267 268 macstr++; 269 korina_dev0_data.mac[i] = (h << 4) + l; 270 } 271 } 272 273 274 /* NAND definitions */ 275 #define NAND_CHIP_DELAY 25 276 277 static void __init rb532_nand_setup(void) 278 { 279 switch (mips_machtype) { 280 case MACH_MIKROTIK_RB532A: 281 set_latch_u5(LO_FOFF | LO_CEX, 282 LO_ULED | LO_ALE | LO_CLE | LO_WPX); 283 break; 284 default: 285 set_latch_u5(LO_WPX | LO_FOFF | LO_CEX, 286 LO_ULED | LO_ALE | LO_CLE); 287 break; 288 } 289 290 /* Setup NAND specific settings */ 291 rb532_nand_data.chip.nr_chips = 1; 292 rb532_nand_data.chip.nr_partitions = ARRAY_SIZE(rb532_partition_info); 293 rb532_nand_data.chip.partitions = rb532_partition_info; 294 rb532_nand_data.chip.chip_delay = NAND_CHIP_DELAY; 295 rb532_nand_data.chip.options = NAND_NO_AUTOINCR; 296 } 297 298 299 static int __init plat_setup_devices(void) 300 { 301 /* Look for the CF card reader */ 302 if (!readl(IDT434_REG_BASE + DEV1MASK)) 303 rb532_devs[2] = NULL; /* disable cf_slot0 at index 2 */ 304 else { 305 cf_slot0_res[0].start = 306 readl(IDT434_REG_BASE + DEV1BASE); 307 cf_slot0_res[0].end = cf_slot0_res[0].start + 0x1000; 308 } 309 310 /* Read the NAND resources from the device controller */ 311 nand_slot0_res[0].start = readl(IDT434_REG_BASE + DEV2BASE); 312 nand_slot0_res[0].end = nand_slot0_res[0].start + 0x1000; 313 314 /* Read and map device controller 3 */ 315 dev3.base = ioremap_nocache(readl(IDT434_REG_BASE + DEV3BASE), 1); 316 317 if (!dev3.base) { 318 printk(KERN_ERR "rb532: cannot remap device controller 3\n"); 319 return -ENXIO; 320 } 321 322 /* Initialise the NAND device */ 323 rb532_nand_setup(); 324 325 /* set the uart clock to the current cpu frequency */ 326 rb532_uart_res[0].uartclk = idt_cpu_freq; 327 328 dev_set_drvdata(&korina_dev0.dev, &korina_dev0_data); 329 330 return platform_add_devices(rb532_devs, ARRAY_SIZE(rb532_devs)); 331 } 332 333 static int __init setup_kmac(char *s) 334 { 335 printk(KERN_INFO "korina mac = %s\n", s); 336 parse_mac_addr(s); 337 return 0; 338 } 339 340 __setup("kmac=", setup_kmac); 341 342 arch_initcall(plat_setup_devices); 343