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
  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
  54static 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
  70static 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
  76static 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
  84static 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
  98static struct physmap_flash_data kurobox_pro_nor_flash_data = {
  99        .width          = 1,
 100};
 101
 102static 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
 108static 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
 122static 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
 139static 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
 147static 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
 157subsys_initcall(kurobox_pro_pci_init);
 158
 159/*****************************************************************************
 160 * Ethernet
 161 ****************************************************************************/
 162
 163static 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 ****************************************************************************/
 170static struct i2c_board_info __initdata kurobox_pro_i2c_rtc = {
 171        I2C_BOARD_INFO("rs5c372a", 0x32),
 172};
 173
 174/*****************************************************************************
 175 * SATA
 176 ****************************************************************************/
 177static 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
 187static 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
 210static 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
 223static 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
 290static 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 ****************************************************************************/
 318static struct orion5x_mpp_mode kurobox_pro_mpp_modes[] __initdata = {
 319        {  0, MPP_UNUSED },
 320        {  1, MPP_UNUSED },
 321        {  2, MPP_GPIO },               /* GPIO Micon */
 322        {  3, MPP_GPIO },               /* GPIO Rtc */
 323        {  4, MPP_UNUSED },
 324        {  5, MPP_UNUSED },
 325        {  6, MPP_NAND },               /* NAND Flash REn */
 326        {  7, MPP_NAND },               /* NAND Flash WEn */
 327        {  8, MPP_UNUSED },
 328        {  9, MPP_UNUSED },
 329        { 10, MPP_UNUSED },
 330        { 11, MPP_UNUSED },
 331        { 12, MPP_SATA_LED },           /* SATA 0 presence */
 332        { 13, MPP_SATA_LED },           /* SATA 1 presence */
 333        { 14, MPP_SATA_LED },           /* SATA 0 active */
 334        { 15, MPP_SATA_LED },           /* SATA 1 active */
 335        { 16, MPP_UART },               /* UART1 RXD */
 336        { 17, MPP_UART },               /* UART1 TXD */
 337        { 18, MPP_UART },               /* UART1 CTSn */
 338        { 19, MPP_UART },               /* UART1 RTSn */
 339        { -1 },
 340};
 341
 342static 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
 380MACHINE_START(KUROBOX_PRO, "Buffalo/Revogear Kurobox Pro")
 381        /* Maintainer: Ronen Shitrit <rshitrit@marvell.com> */
 382        .phys_io        = ORION5X_REGS_PHYS_BASE,
 383        .io_pg_offst    = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
 384        .boot_params    = 0x00000100,
 385        .init_machine   = kurobox_pro_init,
 386        .map_io         = orion5x_map_io,
 387        .init_irq       = orion5x_init_irq,
 388        .timer          = &orion5x_timer,
 389        .fixup          = tag_fixup_mem32,
 390MACHINE_END
 391#endif
 392
 393#ifdef CONFIG_MACH_LINKSTATION_PRO
 394MACHINE_START(LINKSTATION_PRO, "Buffalo Linkstation Pro/Live")
 395        /* Maintainer: Byron Bradley <byron.bbradley@gmail.com> */
 396        .phys_io        = ORION5X_REGS_PHYS_BASE,
 397        .io_pg_offst    = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
 398        .boot_params    = 0x00000100,
 399        .init_machine   = kurobox_pro_init,
 400        .map_io         = orion5x_map_io,
 401        .init_irq       = orion5x_init_irq,
 402        .timer          = &orion5x_timer,
 403        .fixup          = tag_fixup_mem32,
 404MACHINE_END
 405#endif
 406