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
  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/gpio.h>
  25 #include <asm/mach/arch.h>
  26 #include <asm/mach/pci.h>
  27 #include <mach/orion5x.h>
  28 #include <plat/orion_nand.h>
  29 #include "common.h"
  30 #include "mpp.h"
  31
  32 /*****************************************************************************
  33  * KUROBOX-PRO Info
  34  ****************************************************************************/
  35
  36 /*
  37  * 256K NOR flash Device bus boot chip select
  38  */
  39
  40 #define KUROBOX_PRO_NOR_BOOT_BASE       0xf4000000
  41 #define KUROBOX_PRO_NOR_BOOT_SIZE       SZ_256K
  42
  43 /*
  44  * 256M NAND flash on Device bus chip select 1
  45  */
  46
  47 #define KUROBOX_PRO_NAND_BASE           0xfc000000
  48 #define KUROBOX_PRO_NAND_SIZE           SZ_2M
  49
  50 /*****************************************************************************
  51  * 256MB NAND Flash on Device bus CS0
  52  ****************************************************************************/
  53
  54 static struct mtd_partition kurobox_pro_nand_parts[] = {
  55         {
  56                 .name   = "uImage",
  57                 .offset = 0,
  58                 .size   = SZ_4M,
  59         }, {
  60                 .name   = "rootfs",
  61                 .offset = SZ_4M,
  62                 .size   = SZ_64M,
  63         }, {
  64                 .name   = "extra",
  65                 .offset = SZ_4M + SZ_64M,
  66                 .size   = SZ_256M - (SZ_4M + SZ_64M),
  67         },
  68 };
  69
  70 static struct resource kurobox_pro_nand_resource = {
  71         .flags          = IORESOURCE_MEM,
  72         .start          = KUROBOX_PRO_NAND_BASE,
  73         .end            = KUROBOX_PRO_NAND_BASE + KUROBOX_PRO_NAND_SIZE - 1,
  74 };
  75
  76 static struct orion_nand_data kurobox_pro_nand_data = {
  77         .parts          = kurobox_pro_nand_parts,
  78         .nr_parts       = ARRAY_SIZE(kurobox_pro_nand_parts),
  79         .cle            = 0,
  80         .ale            = 1,
  81         .width          = 8,
  82 };
  83
  84 static struct platform_device kurobox_pro_nand_flash = {
  85         .name           = "orion_nand",
  86         .id             = -1,
  87         .dev            = {
  88                 .platform_data  = &kurobox_pro_nand_data,
  89         },
  90         .resource       = &kurobox_pro_nand_resource,
  91         .num_resources  = 1,
  92 };
  93
  94 /*****************************************************************************
  95  * 256KB NOR Flash on BOOT Device
  96  ****************************************************************************/
  97
  98 static struct physmap_flash_data kurobox_pro_nor_flash_data = {
  99         .width          = 1,
 100 };
 101
 102 static struct resource kurobox_pro_nor_flash_resource = {
 103         .flags                  = IORESOURCE_MEM,
 104         .start                  = KUROBOX_PRO_NOR_BOOT_BASE,
 105         .end                    = KUROBOX_PRO_NOR_BOOT_BASE + KUROBOX_PRO_NOR_BOOT_SIZE - 1,
 106 };
 107
 108 static struct platform_device kurobox_pro_nor_flash = {
 109         .name                   = "physmap-flash",
 110         .id                     = 0,
 111         .dev            = {
 112                 .platform_data  = &kurobox_pro_nor_flash_data,
 113         },
 114         .num_resources          = 1,
 115         .resource               = &kurobox_pro_nor_flash_resource,
 116 };
 117
 118 /*****************************************************************************
 119  * PCI
 120  ****************************************************************************/
 121
 122 static int __init kurobox_pro_pci_map_irq(const struct pci_dev *dev, u8 slot,
 123         u8 pin)
 124 {
 125         int irq;
 126
 127         /*
 128          * Check for devices with hard-wired IRQs.
 129          */
 130         irq = orion5x_pci_map_irq(dev, slot, pin);
 131         if (irq != -1)
 132                 return irq;
 133
 134         /*
 135          * PCI isn't used on the Kuro
 136          */
 137         return -1;
 138 }
 139
 140 static struct hw_pci kurobox_pro_pci __initdata = {
 141         .nr_controllers = 2,
 142         .swizzle        = pci_std_swizzle,
 143         .setup          = orion5x_pci_sys_setup,
 144         .scan           = orion5x_pci_sys_scan_bus,
 145         .map_irq        = kurobox_pro_pci_map_irq,
 146 };
 147
 148 static int __init kurobox_pro_pci_init(void)
 149 {
 150         if (machine_is_kurobox_pro()) {
 151                 orion5x_pci_disable();
 152                 pci_common_init(&kurobox_pro_pci);
 153         }
 154
 155         return 0;
 156 }
 157
 158 subsys_initcall(kurobox_pro_pci_init);
 159
 160 /*****************************************************************************
 161  * Ethernet
 162  ****************************************************************************/
 163
 164 static struct mv643xx_eth_platform_data kurobox_pro_eth_data = {
 165         .phy_addr       = MV643XX_ETH_PHY_ADDR(8),
 166 };
 167
 168 /*****************************************************************************
 169  * RTC 5C372a on I2C bus
 170  ****************************************************************************/
 171 static struct i2c_board_info __initdata kurobox_pro_i2c_rtc = {
 172         I2C_BOARD_INFO("rs5c372a", 0x32),
 173 };
 174
 175 /*****************************************************************************
 176  * SATA
 177  ****************************************************************************/
 178 static struct mv_sata_platform_data kurobox_pro_sata_data = {
 179         .n_ports        = 2,
 180 };
 181
 182 /*****************************************************************************
 183  * Kurobox Pro specific power off method via UART1-attached microcontroller
 184  ****************************************************************************/
 185
 186 #define UART1_REG(x)    (UART1_VIRT_BASE + ((UART_##x) << 2))
 187
 188 static int kurobox_pro_miconread(unsigned char *buf, int count)
 189 {
 190         int i;
 191         int timeout;
 192
 193         for (i = 0; i < count; i++) {
 194                 timeout = 10;
 195
 196                 while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
 197                         if (--timeout == 0)
 198                                 break;
 199                         udelay(1000);
 200                 }
 201
 202                 if (timeout == 0)
 203                         break;
 204                 buf[i] = readl(UART1_REG(RX));
 205         }
 206
 207         /* return read bytes */
 208         return i;
 209 }
 210
 211 static int kurobox_pro_miconwrite(const unsigned char *buf, int count)
 212 {
 213         int i = 0;
 214
 215         while (count--) {
 216                 while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
 217                         barrier();
 218                 writel(buf[i++], UART1_REG(TX));
 219         }
 220
 221         return 0;
 222 }
 223
 224 static int kurobox_pro_miconsend(const unsigned char *data, int count)
 225 {
 226         int i;
 227         unsigned char checksum = 0;
 228         unsigned char recv_buf[40];
 229         unsigned char send_buf[40];
 230         unsigned char correct_ack[3];
 231         int retry = 2;
 232
 233         /* Generate checksum */
 234         for (i = 0; i < count; i++)
 235                 checksum -=  data[i];
 236
 237         do {
 238                 /* Send data */
 239                 kurobox_pro_miconwrite(data, count);
 240
 241                 /* send checksum */
 242                 kurobox_pro_miconwrite(&checksum, 1);
 243
 244                 if (kurobox_pro_miconread(recv_buf, sizeof(recv_buf)) <= 3) {
 245                         printk(KERN_ERR ">%s: receive failed.\n", __func__);
 246
 247                         /* send preamble to clear the receive buffer */
 248                         memset(&send_buf, 0xff, sizeof(send_buf));
 249                         kurobox_pro_miconwrite(send_buf, sizeof(send_buf));
 250
 251                         /* make dummy reads */
 252                         mdelay(100);
 253                         kurobox_pro_miconread(recv_buf, sizeof(recv_buf));
 254                 } else {
 255                         /* Generate expected ack */
 256                         correct_ack[0] = 0x01;
 257                         correct_ack[1] = data[1];
 258                         correct_ack[2] = 0x00;
 259
 260                         /* checksum Check */
 261                         if ((recv_buf[0] + recv_buf[1] + recv_buf[2] +
 262                              recv_buf[3]) & 0xFF) {
 263                                 printk(KERN_ERR ">%s: Checksum Error : "
 264                                         "Received data[%02x, %02x, %02x, %02x]"
 265                                         "\n", __func__, recv_buf[0],
 266                                         recv_buf[1], recv_buf[2], recv_buf[3]);
 267                         } else {
 268                                 /* Check Received Data */
 269                                 if (correct_ack[0] == recv_buf[0] &&
 270                                     correct_ack[1] == recv_buf[1] &&
 271                                     correct_ack[2] == recv_buf[2]) {
 272                                         /* Interval for next command */
 273                                         mdelay(10);
 274
 275                                         /* Receive ACK */
 276                                         return 0;
 277                                 }
 278                         }
 279                         /* Received NAK or illegal Data */
 280                         printk(KERN_ERR ">%s: Error : NAK or Illegal Data "
 281                                         "Received\n", __func__);
 282                 }
 283         } while (retry--);
 284
 285         /* Interval for next command */
 286         mdelay(10);
 287
 288         return -1;
 289 }
 290
 291 static void kurobox_pro_power_off(void)
 292 {
 293         const unsigned char watchdogkill[]      = {0x01, 0x35, 0x00};
 294         const unsigned char shutdownwait[]      = {0x00, 0x0c};
 295         const unsigned char poweroff[]          = {0x00, 0x06};
 296         /* 38400 baud divisor */
 297         const unsigned divisor = ((orion5x_tclk + (8 * 38400)) / (16 * 38400));
 298
 299         pr_info("%s: triggering power-off...\n", __func__);
 300
 301         /* hijack uart1 and reset into sane state (38400,8n1,even parity) */
 302         writel(0x83, UART1_REG(LCR));
 303         writel(divisor & 0xff, UART1_REG(DLL));
 304         writel((divisor >> 8) & 0xff, UART1_REG(DLM));
 305         writel(0x1b, UART1_REG(LCR));
 306         writel(0x00, UART1_REG(IER));
 307         writel(0x07, UART1_REG(FCR));
 308         writel(0x00, UART1_REG(MCR));
 309
 310         /* Send the commands to shutdown the Kurobox Pro */
 311         kurobox_pro_miconsend(watchdogkill, sizeof(watchdogkill)) ;
 312         kurobox_pro_miconsend(shutdownwait, sizeof(shutdownwait)) ;
 313         kurobox_pro_miconsend(poweroff, sizeof(poweroff));
 314 }
 315
 316 /*****************************************************************************
 317  * General Setup
 318  ****************************************************************************/
 319 static unsigned int kurobox_pro_mpp_modes[] __initdata = {
 320         MPP0_UNUSED,
 321         MPP1_UNUSED,
 322         MPP2_GPIO,              /* GPIO Micon */
 323         MPP3_GPIO,              /* GPIO Rtc */
 324         MPP4_UNUSED,
 325         MPP5_UNUSED,
 326         MPP6_NAND,              /* NAND Flash REn */
 327         MPP7_NAND,              /* NAND Flash WEn */
 328         MPP8_UNUSED,
 329         MPP9_UNUSED,
 330         MPP10_UNUSED,
 331         MPP11_UNUSED,
 332         MPP12_SATA_LED,         /* SATA 0 presence */
 333         MPP13_SATA_LED,         /* SATA 1 presence */
 334         MPP14_SATA_LED,         /* SATA 0 active */
 335         MPP15_SATA_LED,         /* SATA 1 active */
 336         MPP16_UART,             /* UART1 RXD */
 337         MPP17_UART,             /* UART1 TXD */
 338         MPP18_UART,             /* UART1 CTSn */
 339         MPP19_UART,             /* UART1 RTSn */
 340         0,
 341 };
 342
 343 static void __init kurobox_pro_init(void)
 344 {
 345         /*
 346          * Setup basic Orion functions. Need to be called early.
 347          */
 348         orion5x_init();
 349
 350         orion5x_mpp_conf(kurobox_pro_mpp_modes);
 351
 352         /*
 353          * Configure peripherals.
 354          */
 355         orion5x_ehci0_init();
 356         orion5x_ehci1_init();
 357         orion5x_eth_init(&kurobox_pro_eth_data);
 358         orion5x_i2c_init();
 359         orion5x_sata_init(&kurobox_pro_sata_data);
 360         orion5x_uart0_init();
 361         orion5x_uart1_init();
 362         orion5x_xor_init();
 363
 364         orion5x_setup_dev_boot_win(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                 orion5x_setup_dev0_win(KUROBOX_PRO_NAND_BASE,
 370                                        KUROBOX_PRO_NAND_SIZE);
 371                 platform_device_register(&kurobox_pro_nand_flash);
 372         }
 373
 374         i2c_register_board_info(0, &kurobox_pro_i2c_rtc, 1);
 375
 376         /* register Kurobox Pro specific power-off method */
 377         pm_power_off = kurobox_pro_power_off;
 378 }
 379
 380 #ifdef CONFIG_MACH_KUROBOX_PRO
 381 MACHINE_START(KUROBOX_PRO, "Buffalo/Revogear Kurobox Pro")
 382         /* Maintainer: Ronen Shitrit <rshitrit@marvell.com> */
 383         .boot_params    = 0x00000100,
 384         .init_machine   = kurobox_pro_init,
 385         .map_io         = orion5x_map_io,
 386         .init_early     = orion5x_init_early,
 387         .init_irq       = orion5x_init_irq,
 388         .timer          = &orion5x_timer,
 389         .fixup          = tag_fixup_mem32,
 390 MACHINE_END
 391 #endif
 392
 393 #ifdef CONFIG_MACH_LINKSTATION_PRO
 394 MACHINE_START(LINKSTATION_PRO, "Buffalo Linkstation Pro/Live")
 395         /* Maintainer: Byron Bradley <byron.bbradley@gmail.com> */
 396         .boot_params    = 0x00000100,
 397         .init_machine   = kurobox_pro_init,
 398         .map_io         = orion5x_map_io,
 399         .init_early     = orion5x_init_early,
 400         .init_irq       = orion5x_init_irq,
 401         .timer          = &orion5x_timer,
 402         .fixup          = tag_fixup_mem32,
 403 MACHINE_END
 404 #endif