linux/arch/arm/mach-orion5x/kurobox_pro-setup.c
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   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 <linux/platform_data/mtd-orion_nand.h>
  27#include "common.h"
  28#include "mpp.h"
  29#include "orion5x.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
  53static 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
  69static 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
  75static 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
  83static 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
  97static struct physmap_flash_data kurobox_pro_nor_flash_data = {
  98        .width          = 1,
  99};
 100
 101static 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
 107static 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
 121static 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
 139static 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
 146static 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
 156subsys_initcall(kurobox_pro_pci_init);
 157
 158/*****************************************************************************
 159 * Ethernet
 160 ****************************************************************************/
 161
 162static 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 ****************************************************************************/
 169static struct i2c_board_info __initdata kurobox_pro_i2c_rtc = {
 170        I2C_BOARD_INFO("rs5c372a", 0x32),
 171};
 172
 173/*****************************************************************************
 174 * SATA
 175 ****************************************************************************/
 176static 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
 186static 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
 209static 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
 222static 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
 289static 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 ****************************************************************************/
 317static 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
 341static 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
 383MACHINE_START(KUROBOX_PRO, "Buffalo/Revogear Kurobox Pro")
 384        /* Maintainer: Ronen Shitrit <rshitrit@marvell.com> */
 385        .atag_offset    = 0x100,
 386        .nr_irqs        = ORION5X_NR_IRQS,
 387        .init_machine   = kurobox_pro_init,
 388        .map_io         = orion5x_map_io,
 389        .init_early     = orion5x_init_early,
 390        .init_irq       = orion5x_init_irq,
 391        .init_time      = orion5x_timer_init,
 392        .fixup          = tag_fixup_mem32,
 393        .restart        = orion5x_restart,
 394MACHINE_END
 395#endif
 396
 397#ifdef CONFIG_MACH_LINKSTATION_PRO
 398MACHINE_START(LINKSTATION_PRO, "Buffalo Linkstation Pro/Live")
 399        /* Maintainer: Byron Bradley <byron.bbradley@gmail.com> */
 400        .atag_offset    = 0x100,
 401        .nr_irqs        = ORION5X_NR_IRQS,
 402        .init_machine   = kurobox_pro_init,
 403        .map_io         = orion5x_map_io,
 404        .init_early     = orion5x_init_early,
 405        .init_irq       = orion5x_init_irq,
 406        .init_time      = orion5x_timer_init,
 407        .fixup          = tag_fixup_mem32,
 408        .restart        = orion5x_restart,
 409MACHINE_END
 410#endif
 411