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 <plat/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         .swizzle        = pci_std_swizzle,
 142         .setup          = orion5x_pci_sys_setup,
 143         .scan           = orion5x_pci_sys_scan_bus,
 144         .map_irq        = kurobox_pro_pci_map_irq,
 145 };
 146
 147 static int __init kurobox_pro_pci_init(void)
 148 {
 149         if (machine_is_kurobox_pro()) {
 150                 orion5x_pci_disable();
 151                 pci_common_init(&kurobox_pro_pci);
 152         }
 153
 154         return 0;
 155 }
 156
 157 subsys_initcall(kurobox_pro_pci_init);
 158
 159 /*****************************************************************************
 160  * Ethernet
 161  ****************************************************************************/
 162
 163 static struct mv643xx_eth_platform_data kurobox_pro_eth_data = {
 164         .phy_addr       = MV643XX_ETH_PHY_ADDR(8),
 165 };
 166
 167 /*****************************************************************************
 168  * RTC 5C372a on I2C bus
 169  ****************************************************************************/
 170 static struct i2c_board_info __initdata kurobox_pro_i2c_rtc = {
 171         I2C_BOARD_INFO("rs5c372a", 0x32),
 172 };
 173
 174 /*****************************************************************************
 175  * SATA
 176  ****************************************************************************/
 177 static struct mv_sata_platform_data kurobox_pro_sata_data = {
 178         .n_ports        = 2,
 179 };
 180
 181 /*****************************************************************************
 182  * Kurobox Pro specific power off method via UART1-attached microcontroller
 183  ****************************************************************************/
 184
 185 #define UART1_REG(x)    (UART1_VIRT_BASE + ((UART_##x) << 2))
 186
 187 static int kurobox_pro_miconread(unsigned char *buf, int count)
 188 {
 189         int i;
 190         int timeout;
 191
 192         for (i = 0; i < count; i++) {
 193                 timeout = 10;
 194
 195                 while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
 196                         if (--timeout == 0)
 197                                 break;
 198                         udelay(1000);
 199                 }
 200
 201                 if (timeout == 0)
 202                         break;
 203                 buf[i] = readl(UART1_REG(RX));
 204         }
 205
 206         /* return read bytes */
 207         return i;
 208 }
 209
 210 static int kurobox_pro_miconwrite(const unsigned char *buf, int count)
 211 {
 212         int i = 0;
 213
 214         while (count--) {
 215                 while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
 216                         barrier();
 217                 writel(buf[i++], UART1_REG(TX));
 218         }
 219
 220         return 0;
 221 }
 222
 223 static int kurobox_pro_miconsend(const unsigned char *data, int count)
 224 {
 225         int i;
 226         unsigned char checksum = 0;
 227         unsigned char recv_buf[40];
 228         unsigned char send_buf[40];
 229         unsigned char correct_ack[3];
 230         int retry = 2;
 231
 232         /* Generate checksum */
 233         for (i = 0; i < count; i++)
 234                 checksum -=  data[i];
 235
 236         do {
 237                 /* Send data */
 238                 kurobox_pro_miconwrite(data, count);
 239
 240                 /* send checksum */
 241                 kurobox_pro_miconwrite(&checksum, 1);
 242
 243                 if (kurobox_pro_miconread(recv_buf, sizeof(recv_buf)) <= 3) {
 244                         printk(KERN_ERR ">%s: receive failed.\n", __func__);
 245
 246                         /* send preamble to clear the receive buffer */
 247                         memset(&send_buf, 0xff, sizeof(send_buf));
 248                         kurobox_pro_miconwrite(send_buf, sizeof(send_buf));
 249
 250                         /* make dummy reads */
 251                         mdelay(100);
 252                         kurobox_pro_miconread(recv_buf, sizeof(recv_buf));
 253                 } else {
 254                         /* Generate expected ack */
 255                         correct_ack[0] = 0x01;
 256                         correct_ack[1] = data[1];
 257                         correct_ack[2] = 0x00;
 258
 259                         /* checksum Check */
 260                         if ((recv_buf[0] + recv_buf[1] + recv_buf[2] +
 261                              recv_buf[3]) & 0xFF) {
 262                                 printk(KERN_ERR ">%s: Checksum Error : "
 263                                         "Received data[%02x, %02x, %02x, %02x]"
 264                                         "\n", __func__, recv_buf[0],
 265                                         recv_buf[1], recv_buf[2], recv_buf[3]);
 266                         } else {
 267                                 /* Check Received Data */
 268                                 if (correct_ack[0] == recv_buf[0] &&
 269                                     correct_ack[1] == recv_buf[1] &&
 270                                     correct_ack[2] == recv_buf[2]) {
 271                                         /* Interval for next command */
 272                                         mdelay(10);
 273
 274                                         /* Receive ACK */
 275                                         return 0;
 276                                 }
 277                         }
 278                         /* Received NAK or illegal Data */
 279                         printk(KERN_ERR ">%s: Error : NAK or Illegal Data "
 280                                         "Received\n", __func__);
 281                 }
 282         } while (retry--);
 283
 284         /* Interval for next command */
 285         mdelay(10);
 286
 287         return -1;
 288 }
 289
 290 static void kurobox_pro_power_off(void)
 291 {
 292         const unsigned char watchdogkill[]      = {0x01, 0x35, 0x00};
 293         const unsigned char shutdownwait[]      = {0x00, 0x0c};
 294         const unsigned char poweroff[]          = {0x00, 0x06};
 295         /* 38400 baud divisor */
 296         const unsigned divisor = ((orion5x_tclk + (8 * 38400)) / (16 * 38400));
 297
 298         pr_info("%s: triggering power-off...\n", __func__);
 299
 300         /* hijack uart1 and reset into sane state (38400,8n1,even parity) */
 301         writel(0x83, UART1_REG(LCR));
 302         writel(divisor & 0xff, UART1_REG(DLL));
 303         writel((divisor >> 8) & 0xff, UART1_REG(DLM));
 304         writel(0x1b, UART1_REG(LCR));
 305         writel(0x00, UART1_REG(IER));
 306         writel(0x07, UART1_REG(FCR));
 307         writel(0x00, UART1_REG(MCR));
 308
 309         /* Send the commands to shutdown the Kurobox Pro */
 310         kurobox_pro_miconsend(watchdogkill, sizeof(watchdogkill)) ;
 311         kurobox_pro_miconsend(shutdownwait, sizeof(shutdownwait)) ;
 312         kurobox_pro_miconsend(poweroff, sizeof(poweroff));
 313 }
 314
 315 /*****************************************************************************
 316  * General Setup
 317  ****************************************************************************/
 318 static unsigned int kurobox_pro_mpp_modes[] __initdata = {
 319         MPP0_UNUSED,
 320         MPP1_UNUSED,
 321         MPP2_GPIO,              /* GPIO Micon */
 322         MPP3_GPIO,              /* GPIO Rtc */
 323         MPP4_UNUSED,
 324         MPP5_UNUSED,
 325         MPP6_NAND,              /* NAND Flash REn */
 326         MPP7_NAND,              /* NAND Flash WEn */
 327         MPP8_UNUSED,
 328         MPP9_UNUSED,
 329         MPP10_UNUSED,
 330         MPP11_UNUSED,
 331         MPP12_SATA_LED,         /* SATA 0 presence */
 332         MPP13_SATA_LED,         /* SATA 1 presence */
 333         MPP14_SATA_LED,         /* SATA 0 active */
 334         MPP15_SATA_LED,         /* SATA 1 active */
 335         MPP16_UART,             /* UART1 RXD */
 336         MPP17_UART,             /* UART1 TXD */
 337         MPP18_UART,             /* UART1 CTSn */
 338         MPP19_UART,             /* UART1 RTSn */
 339         0,
 340 };
 341
 342 static void __init kurobox_pro_init(void)
 343 {
 344         /*
 345          * Setup basic Orion functions. Need to be called early.
 346          */
 347         orion5x_init();
 348
 349         orion5x_mpp_conf(kurobox_pro_mpp_modes);
 350
 351         /*
 352          * Configure peripherals.
 353          */
 354         orion5x_ehci0_init();
 355         orion5x_ehci1_init();
 356         orion5x_eth_init(&kurobox_pro_eth_data);
 357         orion5x_i2c_init();
 358         orion5x_sata_init(&kurobox_pro_sata_data);
 359         orion5x_uart0_init();
 360         orion5x_uart1_init();
 361         orion5x_xor_init();
 362
 363         orion5x_setup_dev_boot_win(KUROBOX_PRO_NOR_BOOT_BASE,
 364                                    KUROBOX_PRO_NOR_BOOT_SIZE);
 365         platform_device_register(&kurobox_pro_nor_flash);
 366
 367         if (machine_is_kurobox_pro()) {
 368                 orion5x_setup_dev0_win(KUROBOX_PRO_NAND_BASE,
 369                                        KUROBOX_PRO_NAND_SIZE);
 370                 platform_device_register(&kurobox_pro_nand_flash);
 371         }
 372
 373         i2c_register_board_info(0, &kurobox_pro_i2c_rtc, 1);
 374
 375         /* register Kurobox Pro specific power-off method */
 376         pm_power_off = kurobox_pro_power_off;
 377 }
 378
 379 #ifdef CONFIG_MACH_KUROBOX_PRO
 380 MACHINE_START(KUROBOX_PRO, "Buffalo/Revogear Kurobox Pro")
 381         /* Maintainer: Ronen Shitrit <rshitrit@marvell.com> */
 382         .atag_offset    = 0x100,
 383         .init_machine   = kurobox_pro_init,
 384         .map_io         = orion5x_map_io,
 385         .init_early     = orion5x_init_early,
 386         .init_irq       = orion5x_init_irq,
 387         .timer          = &orion5x_timer,
 388         .fixup          = tag_fixup_mem32,
 389 MACHINE_END
 390 #endif
 391
 392 #ifdef CONFIG_MACH_LINKSTATION_PRO
 393 MACHINE_START(LINKSTATION_PRO, "Buffalo Linkstation Pro/Live")
 394         /* Maintainer: Byron Bradley <byron.bbradley@gmail.com> */
 395         .atag_offset    = 0x100,
 396         .init_machine   = kurobox_pro_init,
 397         .map_io         = orion5x_map_io,
 398         .init_early     = orion5x_init_early,
 399         .init_irq       = orion5x_init_irq,
 400         .timer          = &orion5x_timer,
 401         .fixup          = tag_fixup_mem32,
 402 MACHINE_END
 403 #endif