Logo Search packages:      
Sourcecode: linux version File versions

kurobox_pro-setup.c

/*
 * arch/arm/mach-orion5x/kurobox_pro-setup.c
 *
 * Maintainer: Ronen Shitrit <rshitrit@marvell.com>
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2.  This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <linux/mtd/physmap.h>
#include <linux/mtd/nand.h>
#include <linux/mv643xx_eth.h>
#include <linux/i2c.h>
#include <linux/serial_reg.h>
#include <linux/ata_platform.h>
#include <asm/mach-types.h>
#include <asm/gpio.h>
#include <asm/mach/arch.h>
#include <asm/mach/pci.h>
#include <mach/orion5x.h>
#include <plat/orion_nand.h>
#include "common.h"
#include "mpp.h"

/*****************************************************************************
 * KUROBOX-PRO Info
 ****************************************************************************/

/*
 * 256K NOR flash Device bus boot chip select
 */

#define KUROBOX_PRO_NOR_BOOT_BASE   0xf4000000
#define KUROBOX_PRO_NOR_BOOT_SIZE   SZ_256K

/*
 * 256M NAND flash on Device bus chip select 1
 */

#define KUROBOX_PRO_NAND_BASE       0xfc000000
#define KUROBOX_PRO_NAND_SIZE       SZ_2M

/*****************************************************************************
 * 256MB NAND Flash on Device bus CS0
 ****************************************************************************/

static struct mtd_partition kurobox_pro_nand_parts[] = {
      {
            .name = "uImage",
            .offset     = 0,
            .size = SZ_4M,
      }, {
            .name = "rootfs",
            .offset     = SZ_4M,
            .size = SZ_64M,
      }, {
            .name = "extra",
            .offset     = SZ_4M + SZ_64M,
            .size = SZ_256M - (SZ_4M + SZ_64M),
      },
};

static struct resource kurobox_pro_nand_resource = {
      .flags            = IORESOURCE_MEM,
      .start            = KUROBOX_PRO_NAND_BASE,
      .end        = KUROBOX_PRO_NAND_BASE + KUROBOX_PRO_NAND_SIZE - 1,
};

static struct orion_nand_data kurobox_pro_nand_data = {
      .parts            = kurobox_pro_nand_parts,
      .nr_parts   = ARRAY_SIZE(kurobox_pro_nand_parts),
      .cle        = 0,
      .ale        = 1,
      .width            = 8,
};

static struct platform_device kurobox_pro_nand_flash = {
      .name       = "orion_nand",
      .id         = -1,
      .dev        = {
            .platform_data    = &kurobox_pro_nand_data,
      },
      .resource   = &kurobox_pro_nand_resource,
      .num_resources    = 1,
};

/*****************************************************************************
 * 256KB NOR Flash on BOOT Device
 ****************************************************************************/

static struct physmap_flash_data kurobox_pro_nor_flash_data = {
      .width            = 1,
};

static struct resource kurobox_pro_nor_flash_resource = {
      .flags                  = IORESOURCE_MEM,
      .start                  = KUROBOX_PRO_NOR_BOOT_BASE,
      .end              = KUROBOX_PRO_NOR_BOOT_BASE + KUROBOX_PRO_NOR_BOOT_SIZE - 1,
};

static struct platform_device kurobox_pro_nor_flash = {
      .name             = "physmap-flash",
      .id               = 0,
      .dev        = {
            .platform_data    = &kurobox_pro_nor_flash_data,
      },
      .num_resources          = 1,
      .resource         = &kurobox_pro_nor_flash_resource,
};

/*****************************************************************************
 * PCI
 ****************************************************************************/

static int __init kurobox_pro_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
      int irq;

      /*
       * Check for devices with hard-wired IRQs.
       */
      irq = orion5x_pci_map_irq(dev, slot, pin);
      if (irq != -1)
            return irq;

      /*
       * PCI isn't used on the Kuro
       */
      return -1;
}

static struct hw_pci kurobox_pro_pci __initdata = {
      .nr_controllers   = 2,
      .swizzle    = pci_std_swizzle,
      .setup            = orion5x_pci_sys_setup,
      .scan       = orion5x_pci_sys_scan_bus,
      .map_irq    = kurobox_pro_pci_map_irq,
};

static int __init kurobox_pro_pci_init(void)
{
      if (machine_is_kurobox_pro()) {
            orion5x_pci_disable();
            pci_common_init(&kurobox_pro_pci);
      }

      return 0;
}

subsys_initcall(kurobox_pro_pci_init);

/*****************************************************************************
 * Ethernet
 ****************************************************************************/

static struct mv643xx_eth_platform_data kurobox_pro_eth_data = {
      .phy_addr   = MV643XX_ETH_PHY_ADDR(8),
};

/*****************************************************************************
 * RTC 5C372a on I2C bus
 ****************************************************************************/
static struct i2c_board_info __initdata kurobox_pro_i2c_rtc = {
      I2C_BOARD_INFO("rs5c372a", 0x32),
};

/*****************************************************************************
 * SATA
 ****************************************************************************/
static struct mv_sata_platform_data kurobox_pro_sata_data = {
      .n_ports    = 2,
};

/*****************************************************************************
 * Kurobox Pro specific power off method via UART1-attached microcontroller
 ****************************************************************************/

#define UART1_REG(x)    (UART1_VIRT_BASE + ((UART_##x) << 2))

static int kurobox_pro_miconread(unsigned char *buf, int count)
{
      int i;
      int timeout;

      for (i = 0; i < count; i++) {
            timeout = 10;

            while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
                  if (--timeout == 0)
                        break;
                  udelay(1000);
            }

            if (timeout == 0)
                  break;
            buf[i] = readl(UART1_REG(RX));
      }

      /* return read bytes */
      return i;
}

static int kurobox_pro_miconwrite(const unsigned char *buf, int count)
{
      int i = 0;

      while (count--) {
            while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
                  barrier();
            writel(buf[i++], UART1_REG(TX));
      }

      return 0;
}

static int kurobox_pro_miconsend(const unsigned char *data, int count)
{
      int i;
      unsigned char checksum = 0;
      unsigned char recv_buf[40];
      unsigned char send_buf[40];
      unsigned char correct_ack[3];
      int retry = 2;

      /* Generate checksum */
      for (i = 0; i < count; i++)
            checksum -=  data[i];

      do {
            /* Send data */
            kurobox_pro_miconwrite(data, count);

            /* send checksum */
            kurobox_pro_miconwrite(&checksum, 1);

            if (kurobox_pro_miconread(recv_buf, sizeof(recv_buf)) <= 3) {
                  printk(KERN_ERR ">%s: receive failed.\n", __func__);

                  /* send preamble to clear the receive buffer */
                  memset(&send_buf, 0xff, sizeof(send_buf));
                  kurobox_pro_miconwrite(send_buf, sizeof(send_buf));

                  /* make dummy reads */
                  mdelay(100);
                  kurobox_pro_miconread(recv_buf, sizeof(recv_buf));
            } else {
                  /* Generate expected ack */
                  correct_ack[0] = 0x01;
                  correct_ack[1] = data[1];
                  correct_ack[2] = 0x00;

                  /* checksum Check */
                  if ((recv_buf[0] + recv_buf[1] + recv_buf[2] +
                       recv_buf[3]) & 0xFF) {
                        printk(KERN_ERR ">%s: Checksum Error : "
                              "Received data[%02x, %02x, %02x, %02x]"
                              "\n", __func__, recv_buf[0],
                              recv_buf[1], recv_buf[2], recv_buf[3]);
                  } else {
                        /* Check Received Data */
                        if (correct_ack[0] == recv_buf[0] &&
                            correct_ack[1] == recv_buf[1] &&
                            correct_ack[2] == recv_buf[2]) {
                              /* Interval for next command */
                              mdelay(10);

                              /* Receive ACK */
                              return 0;
                        }
                  }
                  /* Received NAK or illegal Data */
                  printk(KERN_ERR ">%s: Error : NAK or Illegal Data "
                              "Received\n", __func__);
            }
      } while (retry--);

      /* Interval for next command */
      mdelay(10);

      return -1;
}

static void kurobox_pro_power_off(void)
{
      const unsigned char watchdogkill[]  = {0x01, 0x35, 0x00};
      const unsigned char shutdownwait[]  = {0x00, 0x0c};
      const unsigned char poweroff[]            = {0x00, 0x06};
      /* 38400 baud divisor */
      const unsigned divisor = ((orion5x_tclk + (8 * 38400)) / (16 * 38400));

      pr_info("%s: triggering power-off...\n", __func__);

      /* hijack uart1 and reset into sane state (38400,8n1,even parity) */
      writel(0x83, UART1_REG(LCR));
      writel(divisor & 0xff, UART1_REG(DLL));
      writel((divisor >> 8) & 0xff, UART1_REG(DLM));
      writel(0x1b, UART1_REG(LCR));
      writel(0x00, UART1_REG(IER));
      writel(0x07, UART1_REG(FCR));
      writel(0x00, UART1_REG(MCR));

      /* Send the commands to shutdown the Kurobox Pro */
      kurobox_pro_miconsend(watchdogkill, sizeof(watchdogkill)) ;
      kurobox_pro_miconsend(shutdownwait, sizeof(shutdownwait)) ;
      kurobox_pro_miconsend(poweroff, sizeof(poweroff));
}

/*****************************************************************************
 * General Setup
 ****************************************************************************/
static struct orion5x_mpp_mode kurobox_pro_mpp_modes[] __initdata = {
      {  0, MPP_UNUSED },
      {  1, MPP_UNUSED },
      {  2, MPP_GPIO },       /* GPIO Micon */
      {  3, MPP_GPIO },       /* GPIO Rtc */
      {  4, MPP_UNUSED },
      {  5, MPP_UNUSED },
      {  6, MPP_NAND },       /* NAND Flash REn */
      {  7, MPP_NAND },       /* NAND Flash WEn */
      {  8, MPP_UNUSED },
      {  9, MPP_UNUSED },
      { 10, MPP_UNUSED },
      { 11, MPP_UNUSED },
      { 12, MPP_SATA_LED },         /* SATA 0 presence */
      { 13, MPP_SATA_LED },         /* SATA 1 presence */
      { 14, MPP_SATA_LED },         /* SATA 0 active */
      { 15, MPP_SATA_LED },         /* SATA 1 active */
      { 16, MPP_UART },       /* UART1 RXD */
      { 17, MPP_UART },       /* UART1 TXD */
      { 18, MPP_UART },       /* UART1 CTSn */
      { 19, MPP_UART },       /* UART1 RTSn */
      { -1 },
};

static void __init kurobox_pro_init(void)
{
      /*
       * Setup basic Orion functions. Need to be called early.
       */
      orion5x_init();

      orion5x_mpp_conf(kurobox_pro_mpp_modes);

      /*
       * Configure peripherals.
       */
      orion5x_ehci0_init();
      orion5x_ehci1_init();
      orion5x_eth_init(&kurobox_pro_eth_data);
      orion5x_i2c_init();
      orion5x_sata_init(&kurobox_pro_sata_data);
      orion5x_uart0_init();
      orion5x_uart1_init();
      orion5x_xor_init();

      orion5x_setup_dev_boot_win(KUROBOX_PRO_NOR_BOOT_BASE,
                           KUROBOX_PRO_NOR_BOOT_SIZE);
      platform_device_register(&kurobox_pro_nor_flash);

      if (machine_is_kurobox_pro()) {
            orion5x_setup_dev0_win(KUROBOX_PRO_NAND_BASE,
                               KUROBOX_PRO_NAND_SIZE);
            platform_device_register(&kurobox_pro_nand_flash);
      }

      i2c_register_board_info(0, &kurobox_pro_i2c_rtc, 1);

      /* register Kurobox Pro specific power-off method */
      pm_power_off = kurobox_pro_power_off;
}

#ifdef CONFIG_MACH_KUROBOX_PRO
MACHINE_START(KUROBOX_PRO, "Buffalo/Revogear Kurobox Pro")
      /* Maintainer: Ronen Shitrit <rshitrit@marvell.com> */
      .phys_io    = ORION5X_REGS_PHYS_BASE,
      .io_pg_offst      = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
      .boot_params      = 0x00000100,
      .init_machine     = kurobox_pro_init,
      .map_io           = orion5x_map_io,
      .init_irq   = orion5x_init_irq,
      .timer            = &orion5x_timer,
      .fixup            = tag_fixup_mem32,
MACHINE_END
#endif

#ifdef CONFIG_MACH_LINKSTATION_PRO
MACHINE_START(LINKSTATION_PRO, "Buffalo Linkstation Pro/Live")
      /* Maintainer: Byron Bradley <byron.bbradley@gmail.com> */
      .phys_io    = ORION5X_REGS_PHYS_BASE,
      .io_pg_offst      = ((ORION5X_REGS_VIRT_BASE) >> 18) & 0xFFFC,
      .boot_params      = 0x00000100,
      .init_machine     = kurobox_pro_init,
      .map_io           = orion5x_map_io,
      .init_irq   = orion5x_init_irq,
      .timer            = &orion5x_timer,
      .fixup            = tag_fixup_mem32,
MACHINE_END
#endif

Generated by  Doxygen 1.6.0   Back to index