arch/arm/mach-orion5x/kurobox_pro-setup.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * arch/arm/mach-orion5x/kurobox_pro-setup.c
   4  *
   5  * Maintainer: Ronen Shitrit <rshitrit@marvell.com>
   6  */
   7 #include <linux/gpio.h>
   8 #include <linux/kernel.h>
   9 #include <linux/init.h>
  10 #include <linux/platform_device.h>
  11 #include <linux/pci.h>
  12 #include <linux/irq.h>
  13 #include <linux/delay.h>
  14 #include <linux/mtd/physmap.h>
  15 #include <linux/mtd/rawnand.h>
  16 #include <linux/mv643xx_eth.h>
  17 #include <linux/i2c.h>
  18 #include <linux/serial_reg.h>
  19 #include <linux/ata_platform.h>
  20 #include <asm/mach-types.h>
  21 #include <asm/mach/arch.h>
  22 #include <asm/mach/pci.h>
  23 #include <linux/platform_data/mtd-orion_nand.h>
  24 #include "common.h"
  25 #include "mpp.h"
  26 #include "orion5x.h"
  27
  28 /*****************************************************************************
  29  * KUROBOX-PRO Info
  30  ****************************************************************************/
  31
  32 /*
  33  * 256K NOR flash Device bus boot chip select
  34  */
  35
  36 #define KUROBOX_PRO_NOR_BOOT_BASE       0xf4000000
  37 #define KUROBOX_PRO_NOR_BOOT_SIZE       SZ_256K
  38
  39 /*
  40  * 256M NAND flash on Device bus chip select 1
  41  */
  42
  43 #define KUROBOX_PRO_NAND_BASE           0xfc000000
  44 #define KUROBOX_PRO_NAND_SIZE           SZ_2M
  45
  46 /*****************************************************************************
  47  * 256MB NAND Flash on Device bus CS0
  48  ****************************************************************************/
  49
  50 static struct mtd_partition kurobox_pro_nand_parts[] = {
  51         {
  52                 .name   = "uImage",
  53                 .offset = 0,
  54                 .size   = SZ_4M,
  55         }, {
  56                 .name   = "rootfs",
  57                 .offset = SZ_4M,
  58                 .size   = SZ_64M,
  59         }, {
  60                 .name   = "extra",
  61                 .offset = SZ_4M + SZ_64M,
  62                 .size   = SZ_256M - (SZ_4M + SZ_64M),
  63         },
  64 };
  65
  66 static struct resource kurobox_pro_nand_resource = {
  67         .flags          = IORESOURCE_MEM,
  68         .start          = KUROBOX_PRO_NAND_BASE,
  69         .end            = KUROBOX_PRO_NAND_BASE + KUROBOX_PRO_NAND_SIZE - 1,
  70 };
  71
  72 static struct orion_nand_data kurobox_pro_nand_data = {
  73         .parts          = kurobox_pro_nand_parts,
  74         .nr_parts       = ARRAY_SIZE(kurobox_pro_nand_parts),
  75         .cle            = 0,
  76         .ale            = 1,
  77         .width          = 8,
  78 };
  79
  80 static struct platform_device kurobox_pro_nand_flash = {
  81         .name           = "orion_nand",
  82         .id             = -1,
  83         .dev            = {
  84                 .platform_data  = &kurobox_pro_nand_data,
  85         },
  86         .resource       = &kurobox_pro_nand_resource,
  87         .num_resources  = 1,
  88 };
  89
  90 /*****************************************************************************
  91  * 256KB NOR Flash on BOOT Device
  92  ****************************************************************************/
  93
  94 static struct physmap_flash_data kurobox_pro_nor_flash_data = {
  95         .width          = 1,
  96 };
  97
  98 static struct resource kurobox_pro_nor_flash_resource = {
  99         .flags                  = IORESOURCE_MEM,
 100         .start                  = KUROBOX_PRO_NOR_BOOT_BASE,
 101         .end                    = KUROBOX_PRO_NOR_BOOT_BASE + KUROBOX_PRO_NOR_BOOT_SIZE - 1,
 102 };
 103
 104 static struct platform_device kurobox_pro_nor_flash = {
 105         .name                   = "physmap-flash",
 106         .id                     = 0,
 107         .dev            = {
 108                 .platform_data  = &kurobox_pro_nor_flash_data,
 109         },
 110         .num_resources          = 1,
 111         .resource               = &kurobox_pro_nor_flash_resource,
 112 };
 113
 114 /*****************************************************************************
 115  * PCI
 116  ****************************************************************************/
 117
 118 static int __init kurobox_pro_pci_map_irq(const struct pci_dev *dev, u8 slot,
 119         u8 pin)
 120 {
 121         int irq;
 122
 123         /*
 124          * Check for devices with hard-wired IRQs.
 125          */
 126         irq = orion5x_pci_map_irq(dev, slot, pin);
 127         if (irq != -1)
 128                 return irq;
 129
 130         /*
 131          * PCI isn't used on the Kuro
 132          */
 133         return -1;
 134 }
 135
 136 static struct hw_pci kurobox_pro_pci __initdata = {
 137         .nr_controllers = 2,
 138         .setup          = orion5x_pci_sys_setup,
 139         .scan           = orion5x_pci_sys_scan_bus,
 140         .map_irq        = kurobox_pro_pci_map_irq,
 141 };
 142
 143 static int __init kurobox_pro_pci_init(void)
 144 {
 145         if (machine_is_kurobox_pro()) {
 146                 orion5x_pci_disable();
 147                 pci_common_init(&kurobox_pro_pci);
 148         }
 149
 150         return 0;
 151 }
 152
 153 subsys_initcall(kurobox_pro_pci_init);
 154
 155 /*****************************************************************************
 156  * Ethernet
 157  ****************************************************************************/
 158
 159 static struct mv643xx_eth_platform_data kurobox_pro_eth_data = {
 160         .phy_addr       = MV643XX_ETH_PHY_ADDR(8),
 161 };
 162
 163 /*****************************************************************************
 164  * RTC 5C372a on I2C bus
 165  ****************************************************************************/
 166 static struct i2c_board_info __initdata kurobox_pro_i2c_rtc = {
 167         I2C_BOARD_INFO("rs5c372a", 0x32),
 168 };
 169
 170 /*****************************************************************************
 171  * SATA
 172  ****************************************************************************/
 173 static struct mv_sata_platform_data kurobox_pro_sata_data = {
 174         .n_ports        = 2,
 175 };
 176
 177 /*****************************************************************************
 178  * Kurobox Pro specific power off method via UART1-attached microcontroller
 179  ****************************************************************************/
 180
 181 #define UART1_REG(x)    (UART1_VIRT_BASE + ((UART_##x) << 2))
 182
 183 static int kurobox_pro_miconread(unsigned char *buf, int count)
 184 {
 185         int i;
 186         int timeout;
 187
 188         for (i = 0; i < count; i++) {
 189                 timeout = 10;
 190
 191                 while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
 192                         if (--timeout == 0)
 193                                 break;
 194                         udelay(1000);
 195                 }
 196
 197                 if (timeout == 0)
 198                         break;
 199                 buf[i] = readl(UART1_REG(RX));
 200         }
 201
 202         /* return read bytes */
 203         return i;
 204 }
 205
 206 static int kurobox_pro_miconwrite(const unsigned char *buf, int count)
 207 {
 208         int i = 0;
 209
 210         while (count--) {
 211                 while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
 212                         barrier();
 213                 writel(buf[i++], UART1_REG(TX));
 214         }
 215
 216         return 0;
 217 }
 218
 219 static int kurobox_pro_miconsend(const unsigned char *data, int count)
 220 {
 221         int i;
 222         unsigned char checksum = 0;
 223         unsigned char recv_buf[40];
 224         unsigned char send_buf[40];
 225         unsigned char correct_ack[3];
 226         int retry = 2;
 227
 228         /* Generate checksum */
 229         for (i = 0; i < count; i++)
 230                 checksum -=  data[i];
 231
 232         do {
 233                 /* Send data */
 234                 kurobox_pro_miconwrite(data, count);
 235
 236                 /* send checksum */
 237                 kurobox_pro_miconwrite(&checksum, 1);
 238
 239                 if (kurobox_pro_miconread(recv_buf, sizeof(recv_buf)) <= 3) {
 240                         printk(KERN_ERR ">%s: receive failed.\n", __func__);
 241
 242                         /* send preamble to clear the receive buffer */
 243                         memset(&send_buf, 0xff, sizeof(send_buf));
 244                         kurobox_pro_miconwrite(send_buf, sizeof(send_buf));
 245
 246                         /* make dummy reads */
 247                         mdelay(100);
 248                         kurobox_pro_miconread(recv_buf, sizeof(recv_buf));
 249                 } else {
 250                         /* Generate expected ack */
 251                         correct_ack[0] = 0x01;
 252                         correct_ack[1] = data[1];
 253                         correct_ack[2] = 0x00;
 254
 255                         /* checksum Check */
 256                         if ((recv_buf[0] + recv_buf[1] + recv_buf[2] +
 257                              recv_buf[3]) & 0xFF) {
 258                                 printk(KERN_ERR ">%s: Checksum Error : "
 259                                         "Received data[%02x, %02x, %02x, %02x]"
 260                                         "\n", __func__, recv_buf[0],
 261                                         recv_buf[1], recv_buf[2], recv_buf[3]);
 262                         } else {
 263                                 /* Check Received Data */
 264                                 if (correct_ack[0] == recv_buf[0] &&
 265                                     correct_ack[1] == recv_buf[1] &&
 266                                     correct_ack[2] == recv_buf[2]) {
 267                                         /* Interval for next command */
 268                                         mdelay(10);
 269
 270                                         /* Receive ACK */
 271                                         return 0;
 272                                 }
 273                         }
 274                         /* Received NAK or illegal Data */
 275                         printk(KERN_ERR ">%s: Error : NAK or Illegal Data "
 276                                         "Received\n", __func__);
 277                 }
 278         } while (retry--);
 279
 280         /* Interval for next command */
 281         mdelay(10);
 282
 283         return -1;
 284 }
 285
 286 static void kurobox_pro_power_off(void)
 287 {
 288         const unsigned char watchdogkill[]      = {0x01, 0x35, 0x00};
 289         const unsigned char shutdownwait[]      = {0x00, 0x0c};
 290         const unsigned char poweroff[]          = {0x00, 0x06};
 291         /* 38400 baud divisor */
 292         const unsigned divisor = ((orion5x_tclk + (8 * 38400)) / (16 * 38400));
 293
 294         pr_info("%s: triggering power-off...\n", __func__);
 295
 296         /* hijack uart1 and reset into sane state (38400,8n1,even parity) */
 297         writel(0x83, UART1_REG(LCR));
 298         writel(divisor & 0xff, UART1_REG(DLL));
 299         writel((divisor >> 8) & 0xff, UART1_REG(DLM));
 300         writel(0x1b, UART1_REG(LCR));
 301         writel(0x00, UART1_REG(IER));
 302         writel(0x07, UART1_REG(FCR));
 303         writel(0x00, UART1_REG(MCR));
 304
 305         /* Send the commands to shutdown the Kurobox Pro */
 306         kurobox_pro_miconsend(watchdogkill, sizeof(watchdogkill)) ;
 307         kurobox_pro_miconsend(shutdownwait, sizeof(shutdownwait)) ;
 308         kurobox_pro_miconsend(poweroff, sizeof(poweroff));
 309 }
 310
 311 /*****************************************************************************
 312  * General Setup
 313  ****************************************************************************/
 314 static unsigned int kurobox_pro_mpp_modes[] __initdata = {
 315         MPP0_UNUSED,
 316         MPP1_UNUSED,
 317         MPP2_GPIO,              /* GPIO Micon */
 318         MPP3_GPIO,              /* GPIO Rtc */
 319         MPP4_UNUSED,
 320         MPP5_UNUSED,
 321         MPP6_NAND,              /* NAND Flash REn */
 322         MPP7_NAND,              /* NAND Flash WEn */
 323         MPP8_UNUSED,
 324         MPP9_UNUSED,
 325         MPP10_UNUSED,
 326         MPP11_UNUSED,
 327         MPP12_SATA_LED,         /* SATA 0 presence */
 328         MPP13_SATA_LED,         /* SATA 1 presence */
 329         MPP14_SATA_LED,         /* SATA 0 active */
 330         MPP15_SATA_LED,         /* SATA 1 active */
 331         MPP16_UART,             /* UART1 RXD */
 332         MPP17_UART,             /* UART1 TXD */
 333         MPP18_UART,             /* UART1 CTSn */
 334         MPP19_UART,             /* UART1 RTSn */
 335         0,
 336 };
 337
 338 static void __init kurobox_pro_init(void)
 339 {
 340         /*
 341          * Setup basic Orion functions. Need to be called early.
 342          */
 343         orion5x_init();
 344
 345         orion5x_mpp_conf(kurobox_pro_mpp_modes);
 346
 347         /*
 348          * Configure peripherals.
 349          */
 350         orion5x_ehci0_init();
 351         orion5x_ehci1_init();
 352         orion5x_eth_init(&kurobox_pro_eth_data);
 353         orion5x_i2c_init();
 354         orion5x_sata_init(&kurobox_pro_sata_data);
 355         orion5x_uart0_init();
 356         orion5x_uart1_init();
 357         orion5x_xor_init();
 358
 359         mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_BOOT_TARGET,
 360                                     ORION_MBUS_DEVBUS_BOOT_ATTR,
 361                                     KUROBOX_PRO_NOR_BOOT_BASE,
 362                                     KUROBOX_PRO_NOR_BOOT_SIZE);
 363         platform_device_register(&kurobox_pro_nor_flash);
 364
 365         if (machine_is_kurobox_pro()) {
 366                 mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_TARGET(0),
 367                                             ORION_MBUS_DEVBUS_ATTR(0),
 368                                             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
 380 MACHINE_START(KUROBOX_PRO, "Buffalo/Revogear Kurobox Pro")
 381         /* Maintainer: Ronen Shitrit <rshitrit@marvell.com> */
 382         .atag_offset    = 0x100,
 383         .nr_irqs        = ORION5X_NR_IRQS,
 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         .init_time      = orion5x_timer_init,
 389         .fixup          = tag_fixup_mem32,
 390         .restart        = orion5x_restart,
 391 MACHINE_END
 392 #endif
 393
 394 #ifdef CONFIG_MACH_LINKSTATION_PRO
 395 MACHINE_START(LINKSTATION_PRO, "Buffalo Linkstation Pro/Live")
 396         /* Maintainer: Byron Bradley <byron.bbradley@gmail.com> */
 397         .atag_offset    = 0x100,
 398         .nr_irqs        = ORION5X_NR_IRQS,
 399         .init_machine   = kurobox_pro_init,
 400         .map_io         = orion5x_map_io,
 401         .init_early     = orion5x_init_early,
 402         .init_irq       = orion5x_init_irq,
 403         .init_time      = orion5x_timer_init,
 404         .fixup          = tag_fixup_mem32,
 405         .restart        = orion5x_restart,
 406 MACHINE_END
 407 #endif