git.oblomov.eu Git - linux-2.6/blob - 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 <asm/arch/orion5x.h>
  28 #include <asm/plat-orion/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(struct pci_dev *dev, u8 slot, 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                 pci_common_init(&kurobox_pro_pci);
 151
 152         return 0;
 153 }
 154
 155 subsys_initcall(kurobox_pro_pci_init);
 156
 157 /*****************************************************************************
 158  * Ethernet
 159  ****************************************************************************/
 160
 161 static struct mv643xx_eth_platform_data kurobox_pro_eth_data = {
 162         .phy_addr       = 8,
 163 };
 164
 165 /*****************************************************************************
 166  * RTC 5C372a on I2C bus
 167  ****************************************************************************/
 168 static struct i2c_board_info __initdata kurobox_pro_i2c_rtc = {
 169         I2C_BOARD_INFO("rs5c372a", 0x32),
 170 };
 171
 172 /*****************************************************************************
 173  * SATA
 174  ****************************************************************************/
 175 static struct mv_sata_platform_data kurobox_pro_sata_data = {
 176         .n_ports        = 2,
 177 };
 178
 179 /*****************************************************************************
 180  * Kurobox Pro specific power off method via UART1-attached microcontroller
 181  ****************************************************************************/
 182
 183 #define UART1_REG(x)    (UART1_VIRT_BASE + ((UART_##x) << 2))
 184
 185 static int kurobox_pro_miconread(unsigned char *buf, int count)
 186 {
 187         int i;
 188         int timeout;
 189
 190         for (i = 0; i < count; i++) {
 191                 timeout = 10;
 192
 193                 while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
 194                         if (--timeout == 0)
 195                                 break;
 196                         udelay(1000);
 197                 }
 198
 199                 if (timeout == 0)
 200                         break;
 201                 buf[i] = readl(UART1_REG(RX));
 202         }
 203
 204         /* return read bytes */
 205         return i;
 206 }
 207
 208 static int kurobox_pro_miconwrite(const unsigned char *buf, int count)
 209 {
 210         int i = 0;
 211
 212         while (count--) {
 213                 while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
 214                         barrier();
 215                 writel(buf[i++], UART1_REG(TX));
 216         }
 217
 218         return 0;
 219 }
 220
 221 static int kurobox_pro_miconsend(const unsigned char *data, int count)
 222 {
 223         int i;
 224         unsigned char checksum = 0;
 225         unsigned char recv_buf[40];
 226         unsigned char send_buf[40];
 227         unsigned char correct_ack[3];
 228         int retry = 2;
 229
 230         /* Generate checksum */
 231         for (i = 0; i < count; i++)
 232                 checksum -=  data[i];
 233
 234         do {
 235                 /* Send data */
 236                 kurobox_pro_miconwrite(data, count);
 237
 238                 /* send checksum */
 239                 kurobox_pro_miconwrite(&checksum, 1);
 240
 241                 if (kurobox_pro_miconread(recv_buf, sizeof(recv_buf)) <= 3) {
 242                         printk(KERN_ERR ">%s: receive failed.\n", __func__);
 243
 244                         /* send preamble to clear the receive buffer */
 245                         memset(&send_buf, 0xff, sizeof(send_buf));
 246                         kurobox_pro_miconwrite(send_buf, sizeof(send_buf));
 247
 248                         /* make dummy reads */
 249                         mdelay(100);
 250                         kurobox_pro_miconread(recv_buf, sizeof(recv_buf));
 251                 } else {
 252                         /* Generate expected ack */
 253                         correct_ack[0] = 0x01;
 254                         correct_ack[1] = data[1];
 255                         correct_ack[2] = 0x00;
 256
 257                         /* checksum Check */
 258                         if ((recv_buf[0] + recv_buf[1] + recv_buf[2] +
 259                              recv_buf[3]) & 0xFF) {
 260                                 printk(KERN_ERR ">%s: Checksum Error : "
 261                                         "Received data[%02x, %02x, %02x, %02x]"
 262                                         "\n", __func__, recv_buf[0],
 263                                         recv_buf[1], recv_buf[2], recv_buf[3]);
 264                         } else {
 265                                 /* Check Received Data */
 266                                 if (correct_ack[0] == recv_buf[0] &&
 267                                     correct_ack[1] == recv_buf[1] &&
 268                                     correct_ack[2] == recv_buf[2]) {
 269                                         /* Interval for next command */
 270                                         mdelay(10);
 271
 272                                         /* Receive ACK */
 273                                         return 0;
 274                                 }
 275                         }
 276                         /* Received NAK or illegal Data */
 277                         printk(KERN_ERR ">%s: Error : NAK or Illegal Data "
 278                                         "Received\n", __func__);
 279                 }
 280         } while (retry--);
 281
 282         /* Interval for next command */
 283         mdelay(10);
 284
 285         return -1;
 286 }
 287
 288 static void kurobox_pro_power_off(void)
 289 {
 290         const unsigned char watchdogkill[]      = {0x01, 0x35, 0x00};
 291         const unsigned char shutdownwait[]      = {0x00, 0x0c};
 292         const unsigned char poweroff[]          = {0x00, 0x06};
 293         /* 38400 baud divisor */
 294         const unsigned divisor = ((ORION5X_TCLK + (8 * 38400)) / (16 * 38400));
 295
 296         pr_info("%s: triggering power-off...\n", __func__);
 297
 298         /* hijack uart1 and reset into sane state (38400,8n1,even parity) */
 299         writel(0x83, UART1_REG(LCR));
 300         writel(divisor & 0xff, UART1_REG(DLL));
 301         writel((divisor >> 8) & 0xff, UART1_REG(DLM));
 302         writel(0x1b, UART1_REG(LCR));
 303         writel(0x00, UART1_REG(IER));
 304         writel(0x07, UART1_REG(FCR));
 305         writel(0x00, UART1_REG(MCR));
 306
 307         /* Send the commands to shutdown the Kurobox Pro */
 308         kurobox_pro_miconsend(watchdogkill, sizeof(watchdogkill)) ;
 309         kurobox_pro_miconsend(shutdownwait, sizeof(shutdownwait)) ;
 310         kurobox_pro_miconsend(poweroff, sizeof(poweroff));
 311 }
 312
 313 /*****************************************************************************
 314  * General Setup
 315  ****************************************************************************/
 316 static struct orion5x_mpp_mode kurobox_pro_mpp_modes[] __initdata = {
 317         {  0, MPP_UNUSED },
 318         {  1, MPP_UNUSED },
 319         {  2, MPP_GPIO },               /* GPIO Micon */
 320         {  3, MPP_GPIO },               /* GPIO Rtc */
 321         {  4, MPP_UNUSED },
 322         {  5, MPP_UNUSED },
 323         {  6, MPP_NAND },               /* NAND Flash REn */
 324         {  7, MPP_NAND },               /* NAND Flash WEn */
 325         {  8, MPP_UNUSED },
 326         {  9, MPP_UNUSED },
 327         { 10, MPP_UNUSED },
 328         { 11, MPP_UNUSED },
 329         { 12, MPP_SATA_LED },           /* SATA 0 presence */
 330         { 13, MPP_SATA_LED },           /* SATA 1 presence */
 331         { 14, MPP_SATA_LED },           /* SATA 0 active */
 332         { 15, MPP_SATA_LED },           /* SATA 1 active */
 333         { 16, MPP_UART },               /* UART1 RXD */
 334         { 17, MPP_UART },               /* UART1 TXD */
 335         { 18, MPP_UART },               /* UART1 CTSn */
 336         { 19, MPP_UART },               /* UART1 RTSn */
 337         { -1 },
 338 };
 339
 340 static void __init kurobox_pro_init(void)
 341 {
 342         /*
 343          * Setup basic Orion functions. Need to be called early.
 344          */
 345         orion5x_init();
 346
 347         orion5x_mpp_conf(kurobox_pro_mpp_modes);
 348
 349         /*
 350          * Configure peripherals.
 351          */
 352         orion5x_ehci0_init();
 353         orion5x_ehci1_init();
 354         orion5x_eth_init(&kurobox_pro_eth_data);
 355         orion5x_i2c_init();
 356         orion5x_sata_init(&kurobox_pro_sata_data);
 357         orion5x_uart0_init();
 358         orion5x_uart1_init();
 359
 360         orion5x_setup_dev_boot_win(KUROBOX_PRO_NOR_BOOT_BASE,
 361                                    KUROBOX_PRO_NOR_BOOT_SIZE);
 362         platform_device_register(&kurobox_pro_nor_flash);
 363
 364         if (machine_is_kurobox_pro()) {
 365                 orion5x_setup_dev0_win(KUROBOX_PRO_NAND_BASE,
 366                                        KUROBOX_PRO_NAND_SIZE);
 367                 platform_device_register(&kurobox_pro_nand_flash);
 368         }
 369
 370         i2c_register_board_info(0, &kurobox_pro_i2c_rtc, 1);
 371
 372         /* register Kurobox Pro specific power-off method */
 373         pm_power_off = kurobox_pro_power_off;
 374 }
 375
 376 #ifdef CONFIG_MACH_KUROBOX_PRO
 377 MACHINE_START(KUROBOX_PRO, "Buffalo/Revogear Kurobox Pro")
 378         /* Maintainer: Ronen Shitrit <rshitrit@marvell.com> */
 379         .phys_io        = ORION5X_REGS_PHYS_BASE,
 380         .io_pg_offst    = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
 381         .boot_params    = 0x00000100,
 382         .init_machine   = kurobox_pro_init,
 383         .map_io         = orion5x_map_io,
 384         .init_irq       = orion5x_init_irq,
 385         .timer          = &orion5x_timer,
 386         .fixup          = tag_fixup_mem32,
 387 MACHINE_END
 388 #endif
 389
 390 #ifdef CONFIG_MACH_LINKSTATION_PRO
 391 MACHINE_START(LINKSTATION_PRO, "Buffalo Linkstation Pro/Live")
 392         /* Maintainer: Byron Bradley <byron.bbradley@gmail.com> */
 393         .phys_io        = ORION5X_REGS_PHYS_BASE,
 394         .io_pg_offst    = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
 395         .boot_params    = 0x00000100,
 396         .init_machine   = kurobox_pro_init,
 397         .map_io         = orion5x_map_io,
 398         .init_irq       = orion5x_init_irq,
 399         .timer          = &orion5x_timer,
 400         .fixup          = tag_fixup_mem32,
 401 MACHINE_END
 402 #endif