arch/arm/mach-orion5x/kurobox_pro-setup.c

   1 /*
   2  * arch/arm/mach-orion5x/kurobox_pro-setup.c
   3  *
   4  * Maintainer: Ronen Shitrit <rshitrit@marvell.com>
   5  *
   6  * This file is licensed under the terms of the GNU General Public
   7  * License version 2.  This program is licensed "as is" without any
   8  * warranty of any kind, whether express or implied.
   9  */
  10 #include <linux/gpio.h>
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/pci.h>
  15 #include <linux/irq.h>
  16 #include <linux/delay.h>
  17 #include <linux/mtd/physmap.h>
  18 #include <linux/mtd/nand.h>
  19 #include <linux/mv643xx_eth.h>
  20 #include <linux/i2c.h>
  21 #include <linux/serial_reg.h>
  22 #include <linux/ata_platform.h>
  23 #include <asm/mach-types.h>
  24 #include <asm/mach/arch.h>
  25 #include <asm/mach/pci.h>
  26 #include <mach/orion5x.h>
  27 #include <linux/platform_data/mtd-orion_nand.h>
  28 #include "common.h"
  29 #include "mpp.h"
  30
  31 /*****************************************************************************
  32  * KUROBOX-PRO Info
  33  ****************************************************************************/
  34
  35 /*
  36  * 256K NOR flash Device bus boot chip select
  37  */
  38
  39 #define KUROBOX_PRO_NOR_BOOT_BASE       0xf4000000
  40 #define KUROBOX_PRO_NOR_BOOT_SIZE       SZ_256K
  41
  42 /*
  43  * 256M NAND flash on Device bus chip select 1
  44  */
  45
  46 #define KUROBOX_PRO_NAND_BASE           0xfc000000
  47 #define KUROBOX_PRO_NAND_SIZE           SZ_2M
  48
  49 /*****************************************************************************
  50  * 256MB NAND Flash on Device bus CS0
  51  ****************************************************************************/
  52
  53 static struct mtd_partition kurobox_pro_nand_parts[] = {
  54         {
  55                 .name   = "uImage",
  56                 .offset = 0,
  57                 .size   = SZ_4M,
  58         }, {
  59                 .name   = "rootfs",
  60                 .offset = SZ_4M,
  61                 .size   = SZ_64M,
  62         }, {
  63                 .name   = "extra",
  64                 .offset = SZ_4M + SZ_64M,
  65                 .size   = SZ_256M - (SZ_4M + SZ_64M),
  66         },
  67 };
  68
  69 static struct resource kurobox_pro_nand_resource = {
  70         .flags          = IORESOURCE_MEM,
  71         .start          = KUROBOX_PRO_NAND_BASE,
  72         .end            = KUROBOX_PRO_NAND_BASE + KUROBOX_PRO_NAND_SIZE - 1,
  73 };
  74
  75 static struct orion_nand_data kurobox_pro_nand_data = {
  76         .parts          = kurobox_pro_nand_parts,
  77         .nr_parts       = ARRAY_SIZE(kurobox_pro_nand_parts),
  78         .cle            = 0,
  79         .ale            = 1,
  80         .width          = 8,
  81 };
  82
  83 static struct platform_device kurobox_pro_nand_flash = {
  84         .name           = "orion_nand",
  85         .id             = -1,
  86         .dev            = {
  87                 .platform_data  = &kurobox_pro_nand_data,
  88         },
  89         .resource       = &kurobox_pro_nand_resource,
  90         .num_resources  = 1,
  91 };
  92
  93 /*****************************************************************************
  94  * 256KB NOR Flash on BOOT Device
  95  ****************************************************************************/
  96
  97 static struct physmap_flash_data kurobox_pro_nor_flash_data = {
  98         .width          = 1,
  99 };
 100
 101 static struct resource kurobox_pro_nor_flash_resource = {
 102         .flags                  = IORESOURCE_MEM,
 103         .start                  = KUROBOX_PRO_NOR_BOOT_BASE,
 104         .end                    = KUROBOX_PRO_NOR_BOOT_BASE + KUROBOX_PRO_NOR_BOOT_SIZE - 1,
 105 };
 106
 107 static struct platform_device kurobox_pro_nor_flash = {
 108         .name                   = "physmap-flash",
 109         .id                     = 0,
 110         .dev            = {
 111                 .platform_data  = &kurobox_pro_nor_flash_data,
 112         },
 113         .num_resources          = 1,
 114         .resource               = &kurobox_pro_nor_flash_resource,
 115 };
 116
 117 /*****************************************************************************
 118  * PCI
 119  ****************************************************************************/
 120
 121 static int __init kurobox_pro_pci_map_irq(const struct pci_dev *dev, u8 slot,
 122         u8 pin)
 123 {
 124         int irq;
 125
 126         /*
 127          * Check for devices with hard-wired IRQs.
 128          */
 129         irq = orion5x_pci_map_irq(dev, slot, pin);
 130         if (irq != -1)
 131                 return irq;
 132
 133         /*
 134          * PCI isn't used on the Kuro
 135          */
 136         return -1;
 137 }
 138
 139 static struct hw_pci kurobox_pro_pci __initdata = {
 140         .nr_controllers = 2,
 141         .setup          = orion5x_pci_sys_setup,
 142         .scan           = orion5x_pci_sys_scan_bus,
 143         .map_irq        = kurobox_pro_pci_map_irq,
 144 };
 145
 146 static int __init kurobox_pro_pci_init(void)
 147 {
 148         if (machine_is_kurobox_pro()) {
 149                 orion5x_pci_disable();
 150                 pci_common_init(&kurobox_pro_pci);
 151         }
 152
 153         return 0;
 154 }
 155
 156 subsys_initcall(kurobox_pro_pci_init);
 157
 158 /*****************************************************************************
 159  * Ethernet
 160  ****************************************************************************/
 161
 162 static struct mv643xx_eth_platform_data kurobox_pro_eth_data = {
 163         .phy_addr       = MV643XX_ETH_PHY_ADDR(8),
 164 };
 165
 166 /*****************************************************************************
 167  * RTC 5C372a on I2C bus
 168  ****************************************************************************/
 169 static struct i2c_board_info __initdata kurobox_pro_i2c_rtc = {
 170         I2C_BOARD_INFO("rs5c372a", 0x32),
 171 };
 172
 173 /*****************************************************************************
 174  * SATA
 175  ****************************************************************************/
 176 static struct mv_sata_platform_data kurobox_pro_sata_data = {
 177         .n_ports        = 2,
 178 };
 179
 180 /*****************************************************************************
 181  * Kurobox Pro specific power off method via UART1-attached microcontroller
 182  ****************************************************************************/
 183
 184 #define UART1_REG(x)    (UART1_VIRT_BASE + ((UART_##x) << 2))
 185
 186 static int kurobox_pro_miconread(unsigned char *buf, int count)
 187 {
 188         int i;
 189         int timeout;
 190
 191         for (i = 0; i < count; i++) {
 192                 timeout = 10;
 193
 194                 while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
 195                         if (--timeout == 0)
 196                                 break;
 197                         udelay(1000);
 198                 }
 199
 200                 if (timeout == 0)
 201                         break;
 202                 buf[i] = readl(UART1_REG(RX));
 203         }
 204
 205         /* return read bytes */
 206         return i;
 207 }
 208
 209 static int kurobox_pro_miconwrite(const unsigned char *buf, int count)
 210 {
 211         int i = 0;
 212
 213         while (count--) {
 214                 while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
 215                         barrier();
 216                 writel(buf[i++], UART1_REG(TX));
 217         }
 218
 219         return 0;
 220 }
 221
 222 static int kurobox_pro_miconsend(const unsigned char *data, int count)
 223 {
 224         int i;
 225         unsigned char checksum = 0;
 226         unsigned char recv_buf[40];
 227         unsigned char send_buf[40];
 228         unsigned char correct_ack[3];
 229         int retry = 2;
 230
 231         /* Generate checksum */
 232         for (i = 0; i < count; i++)
 233                 checksum -=  data[i];
 234
 235         do {
 236                 /* Send data */
 237                 kurobox_pro_miconwrite(data, count);
 238
 239                 /* send checksum */
 240                 kurobox_pro_miconwrite(&checksum, 1);
 241
 242                 if (kurobox_pro_miconread(recv_buf, sizeof(recv_buf)) <= 3) {
 243                         printk(KERN_ERR ">%s: receive failed.\n", __func__);
 244
 245                         /* send preamble to clear the receive buffer */
 246                         memset(&send_buf, 0xff, sizeof(send_buf));
 247                         kurobox_pro_miconwrite(send_buf, sizeof(send_buf));
 248
 249                         /* make dummy reads */
 250                         mdelay(100);
 251                         kurobox_pro_miconread(recv_buf, sizeof(recv_buf));
 252                 } else {
 253                         /* Generate expected ack */
 254                         correct_ack[0] = 0x01;
 255                         correct_ack[1] = data[1];
 256                         correct_ack[2] = 0x00;
 257
 258                         /* checksum Check */
 259                         if ((recv_buf[0] + recv_buf[1] + recv_buf[2] +
 260                              recv_buf[3]) & 0xFF) {
 261                                 printk(KERN_ERR ">%s: Checksum Error : "
 262                                         "Received data[%02x, %02x, %02x, %02x]"
 263                                         "\n", __func__, recv_buf[0],
 264                                         recv_buf[1], recv_buf[2], recv_buf[3]);
 265                         } else {
 266                                 /* Check Received Data */
 267                                 if (correct_ack[0] == recv_buf[0] &&
 268                                     correct_ack[1] == recv_buf[1] &&
 269                                     correct_ack[2] == recv_buf[2]) {
 270                                         /* Interval for next command */
 271                                         mdelay(10);
 272
 273                                         /* Receive ACK */
 274                                         return 0;
 275                                 }
 276                         }
 277                         /* Received NAK or illegal Data */
 278                         printk(KERN_ERR ">%s: Error : NAK or Illegal Data "
 279                                         "Received\n", __func__);
 280                 }
 281         } while (retry--);
 282
 283         /* Interval for next command */
 284         mdelay(10);
 285
 286         return -1;
 287 }
 288
 289 static void kurobox_pro_power_off(void)
 290 {
 291         const unsigned char watchdogkill[]      = {0x01, 0x35, 0x00};
 292         const unsigned char shutdownwait[]      = {0x00, 0x0c};
 293         const unsigned char poweroff[]          = {0x00, 0x06};
 294         /* 38400 baud divisor */
 295         const unsigned divisor = ((orion5x_tclk + (8 * 38400)) / (16 * 38400));
 296
 297         pr_info("%s: triggering power-off...\n", __func__);
 298
 299         /* hijack uart1 and reset into sane state (38400,8n1,even parity) */
 300         writel(0x83, UART1_REG(LCR));
 301         writel(divisor & 0xff, UART1_REG(DLL));
 302         writel((divisor >> 8) & 0xff, UART1_REG(DLM));
 303         writel(0x1b, UART1_REG(LCR));
 304         writel(0x00, UART1_REG(IER));
 305         writel(0x07, UART1_REG(FCR));
 306         writel(0x00, UART1_REG(MCR));
 307
 308         /* Send the commands to shutdown the Kurobox Pro */
 309         kurobox_pro_miconsend(watchdogkill, sizeof(watchdogkill)) ;
 310         kurobox_pro_miconsend(shutdownwait, sizeof(shutdownwait)) ;
 311         kurobox_pro_miconsend(poweroff, sizeof(poweroff));
 312 }
 313
 314 /*****************************************************************************
 315  * General Setup
 316  ****************************************************************************/
 317 static unsigned int kurobox_pro_mpp_modes[] __initdata = {
 318         MPP0_UNUSED,
 319         MPP1_UNUSED,
 320         MPP2_GPIO,              /* GPIO Micon */
 321         MPP3_GPIO,              /* GPIO Rtc */
 322         MPP4_UNUSED,
 323         MPP5_UNUSED,
 324         MPP6_NAND,              /* NAND Flash REn */
 325         MPP7_NAND,              /* NAND Flash WEn */
 326         MPP8_UNUSED,
 327         MPP9_UNUSED,
 328         MPP10_UNUSED,
 329         MPP11_UNUSED,
 330         MPP12_SATA_LED,         /* SATA 0 presence */
 331         MPP13_SATA_LED,         /* SATA 1 presence */
 332         MPP14_SATA_LED,         /* SATA 0 active */
 333         MPP15_SATA_LED,         /* SATA 1 active */
 334         MPP16_UART,             /* UART1 RXD */
 335         MPP17_UART,             /* UART1 TXD */
 336         MPP18_UART,             /* UART1 CTSn */
 337         MPP19_UART,             /* UART1 RTSn */
 338         0,
 339 };
 340
 341 static void __init kurobox_pro_init(void)
 342 {
 343         /*
 344          * Setup basic Orion functions. Need to be called early.
 345          */
 346         orion5x_init();
 347
 348         orion5x_mpp_conf(kurobox_pro_mpp_modes);
 349
 350         /*
 351          * Configure peripherals.
 352          */
 353         orion5x_ehci0_init();
 354         orion5x_ehci1_init();
 355         orion5x_eth_init(&kurobox_pro_eth_data);
 356         orion5x_i2c_init();
 357         orion5x_sata_init(&kurobox_pro_sata_data);
 358         orion5x_uart0_init();
 359         orion5x_uart1_init();
 360         orion5x_xor_init();
 361
 362         mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET,
 363                                     ORION_MBUS_DEVBUS_BOOT_ATTR,
 364                                     KUROBOX_PRO_NOR_BOOT_BASE,
 365                                     KUROBOX_PRO_NOR_BOOT_SIZE);
 366         platform_device_register(&kurobox_pro_nor_flash);
 367
 368         if (machine_is_kurobox_pro()) {
 369                 mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_TARGET(0),
 370                                             ORION_MBUS_DEVBUS_ATTR(0),
 371                                             KUROBOX_PRO_NAND_BASE,
 372                                             KUROBOX_PRO_NAND_SIZE);
 373                 platform_device_register(&kurobox_pro_nand_flash);
 374         }
 375
 376         i2c_register_board_info(0, &kurobox_pro_i2c_rtc, 1);
 377
 378         /* register Kurobox Pro specific power-off method */
 379         pm_power_off = kurobox_pro_power_off;
 380 }
 381
 382 #ifdef CONFIG_MACH_KUROBOX_PRO
 383 MACHINE_START(KUROBOX_PRO, "Buffalo/Revogear Kurobox Pro")
 384         /* Maintainer: Ronen Shitrit <rshitrit@marvell.com> */
 385         .atag_offset    = 0x100,
 386         .init_machine   = kurobox_pro_init,
 387         .map_io         = orion5x_map_io,
 388         .init_early     = orion5x_init_early,
 389         .init_irq       = orion5x_init_irq,
 390         .init_time      = orion5x_timer_init,
 391         .fixup          = tag_fixup_mem32,
 392         .restart        = orion5x_restart,
 393 MACHINE_END
 394 #endif
 395
 396 #ifdef CONFIG_MACH_LINKSTATION_PRO
 397 MACHINE_START(LINKSTATION_PRO, "Buffalo Linkstation Pro/Live")
 398         /* Maintainer: Byron Bradley <byron.bbradley@gmail.com> */
 399         .atag_offset    = 0x100,
 400         .init_machine   = kurobox_pro_init,
 401         .map_io         = orion5x_map_io,
 402         .init_early     = orion5x_init_early,
 403         .init_irq       = orion5x_init_irq,
 404         .init_time      = orion5x_timer_init,
 405         .fixup          = tag_fixup_mem32,
 406         .restart        = orion5x_restart,
 407 MACHINE_END
 408 #endif