arch/ppc/platforms/ev64260.c

   1 /*
   2  * Board setup routines for the Marvell/Galileo EV-64260-BP Evaluation Board.
   3  *
   4  * Author: Mark A. Greer <mgreer@mvista.com>
   5  *
   6  * 2001-2003 (c) MontaVista, Software, Inc.  This file is licensed under
   7  * the terms of the GNU General Public License version 2.  This program
   8  * is licensed "as is" without any warranty of any kind, whether express
   9  * or implied.
  10  */
  11
  12 /*
  13  * The EV-64260-BP port is the result of hard work from many people from
  14  * many companies.  In particular, employees of Marvell/Galileo, Mission
  15  * Critical Linux, Xyterra, and MontaVista Software were heavily involved.
  16  *
  17  * Note: I have not been able to get *all* PCI slots to work reliably
  18  *      at 66 MHz.  I recommend setting jumpers J15 & J16 to short pins 1&2
  19  *      so that 33 MHz is used. --MAG
  20  * Note: The 750CXe and 7450 are not stable with a 125MHz or 133MHz TCLK/SYSCLK.
  21  *      At 100MHz, they are solid.
  22  */
  23
  24 #include <linux/delay.h>
  25 #include <linux/pci.h>
  26 #include <linux/ide.h>
  27 #include <linux/irq.h>
  28 #include <linux/fs.h>
  29 #include <linux/seq_file.h>
  30 #include <linux/console.h>
  31 #include <linux/initrd.h>
  32 #include <linux/root_dev.h>
  33 #include <linux/platform_device.h>
  34 #if !defined(CONFIG_SERIAL_MPSC_CONSOLE)
  35 #include <linux/serial.h>
  36 #include <linux/tty.h>
  37 #include <linux/serial_core.h>
  38 #include <linux/serial_8250.h>
  39 #else
  40 #include <linux/mv643xx.h>
  41 #endif
  42 #include <asm/bootinfo.h>
  43 #include <asm/machdep.h>
  44 #include <asm/mv64x60.h>
  45 #include <asm/todc.h>
  46 #include <asm/time.h>
  47
  48 #include <platforms/ev64260.h>
  49
  50 #define BOARD_VENDOR    "Marvell/Galileo"
  51 #define BOARD_MACHINE   "EV-64260-BP"
  52
  53 static struct mv64x60_handle    bh;
  54
  55 #if !defined(CONFIG_SERIAL_MPSC_CONSOLE)
  56 extern void gen550_progress(char *, unsigned short);
  57 extern void gen550_init(int, struct uart_port *);
  58 #endif
  59
  60 static const unsigned int cpu_7xx[16] = { /* 7xx & 74xx (but not 745x) */
  61         18, 15, 14, 2, 4, 13, 5, 9, 6, 11, 8, 10, 16, 12, 7, 0
  62 };
  63 static const unsigned int cpu_745x[2][16] = { /* PLL_EXT 0 & 1 */
  64         { 1, 15, 14,  2,  4, 13,  5,  9,  6, 11,  8, 10, 16, 12,  7,  0 },
  65         { 0, 30,  0,  2,  0, 26,  0, 18,  0, 22, 20, 24, 28, 32,  0,  0 }
  66 };
  67
  68
  69 TODC_ALLOC();
  70
  71 static int
  72 ev64260_get_bus_speed(void)
  73 {
  74         return 100000000;
  75 }
  76
  77 static int
  78 ev64260_get_cpu_speed(void)
  79 {
  80         unsigned long   pvr, hid1, pll_ext;
  81
  82         pvr = PVR_VER(mfspr(SPRN_PVR));
  83
  84         if (pvr != PVR_VER(PVR_7450)) {
  85                 hid1 = mfspr(SPRN_HID1) >> 28;
  86                 return ev64260_get_bus_speed() * cpu_7xx[hid1]/2;
  87         }
  88         else {
  89                 hid1 = (mfspr(SPRN_HID1) & 0x0001e000) >> 13;
  90                 pll_ext = 0; /* No way to read; must get from schematic */
  91                 return ev64260_get_bus_speed() * cpu_745x[pll_ext][hid1]/2;
  92         }
  93 }
  94
  95 unsigned long __init
  96 ev64260_find_end_of_memory(void)
  97 {
  98         return mv64x60_get_mem_size(CONFIG_MV64X60_NEW_BASE,
  99                 MV64x60_TYPE_GT64260A);
 100 }
 101
 102 /*
 103  * Marvell/Galileo EV-64260-BP Evaluation Board PCI interrupt routing.
 104  * Note: By playing with J8 and JP1-4, you can get 2 IRQ's from the first
 105  *      PCI bus (in which cast, INTPIN B would be EV64260_PCI_1_IRQ).
 106  *      This is the most IRQs you can get from one bus with this board, though.
 107  */
 108 static int __init
 109 ev64260_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
 110 {
 111         struct pci_controller   *hose = pci_bus_to_hose(dev->bus->number);
 112
 113         if (hose->index == 0) {
 114                 static char pci_irq_table[][4] =
 115                 /*
 116                  *      PCI IDSEL/INTPIN->INTLINE
 117                  *         A   B   C   D
 118                  */
 119                 {
 120                         {EV64260_PCI_0_IRQ,0,0,0}, /* IDSEL 7 - PCI bus 0 */
 121                         {EV64260_PCI_0_IRQ,0,0,0}, /* IDSEL 8 - PCI bus 0 */
 122                 };
 123
 124                 const long min_idsel = 7, max_idsel = 8, irqs_per_slot = 4;
 125                 return PCI_IRQ_TABLE_LOOKUP;
 126         }
 127         else {
 128                 static char pci_irq_table[][4] =
 129                 /*
 130                  *      PCI IDSEL/INTPIN->INTLINE
 131                  *         A   B   C   D
 132                  */
 133                 {
 134                         { EV64260_PCI_1_IRQ,0,0,0}, /* IDSEL 7 - PCI bus 1 */
 135                         { EV64260_PCI_1_IRQ,0,0,0}, /* IDSEL 8 - PCI bus 1 */
 136                 };
 137
 138                 const long min_idsel = 7, max_idsel = 8, irqs_per_slot = 4;
 139                 return PCI_IRQ_TABLE_LOOKUP;
 140         }
 141 }
 142
 143 static void __init
 144 ev64260_setup_peripherals(void)
 145 {
 146         mv64x60_set_32bit_window(&bh, MV64x60_CPU2BOOT_WIN,
 147                 EV64260_EMB_FLASH_BASE, EV64260_EMB_FLASH_SIZE, 0);
 148         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2BOOT_WIN);
 149         mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_0_WIN,
 150                 EV64260_EXT_SRAM_BASE, EV64260_EXT_SRAM_SIZE, 0);
 151         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_0_WIN);
 152         mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_1_WIN,
 153                 EV64260_TODC_BASE, EV64260_TODC_SIZE, 0);
 154         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_1_WIN);
 155         mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_2_WIN,
 156                 EV64260_UART_BASE, EV64260_UART_SIZE, 0);
 157         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_2_WIN);
 158         mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_3_WIN,
 159                 EV64260_EXT_FLASH_BASE, EV64260_EXT_FLASH_SIZE, 0);
 160         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_3_WIN);
 161
 162         TODC_INIT(TODC_TYPE_DS1501, 0, 0,
 163                         ioremap(EV64260_TODC_BASE, EV64260_TODC_SIZE), 8);
 164
 165         mv64x60_clr_bits(&bh, MV64x60_CPU_CONFIG,((1<<12) | (1<<28) | (1<<29)));
 166         mv64x60_set_bits(&bh, MV64x60_CPU_CONFIG, (1<<27));
 167
 168         if (ev64260_get_bus_speed() > 100000000)
 169                 mv64x60_set_bits(&bh, MV64x60_CPU_CONFIG, (1<<23));
 170
 171         mv64x60_set_bits(&bh, MV64x60_PCI0_PCI_DECODE_CNTL, ((1<<0) | (1<<3)));
 172         mv64x60_set_bits(&bh, MV64x60_PCI1_PCI_DECODE_CNTL, ((1<<0) | (1<<3)));
 173
 174         /*
 175          * Enabling of PCI internal-vs-external arbitration
 176          * is a platform- and errata-dependent decision.
 177          */
 178         if (bh.type == MV64x60_TYPE_GT64260A )  {
 179                 mv64x60_set_bits(&bh, MV64x60_PCI0_ARBITER_CNTL, (1<<31));
 180                 mv64x60_set_bits(&bh, MV64x60_PCI1_ARBITER_CNTL, (1<<31));
 181         }
 182
 183         mv64x60_set_bits(&bh, MV64x60_CPU_MASTER_CNTL, (1<<9)); /* Only 1 cpu */
 184
 185         /*
 186          * Turn off timer/counters.  Not turning off watchdog timer because
 187          * can't read its reg on the 64260A so don't know if we'll be enabling
 188          * or disabling.
 189          */
 190         mv64x60_clr_bits(&bh, MV64x60_TIMR_CNTR_0_3_CNTL,
 191                         ((1<<0) | (1<<8) | (1<<16) | (1<<24)));
 192         mv64x60_clr_bits(&bh, GT64260_TIMR_CNTR_4_7_CNTL,
 193                         ((1<<0) | (1<<8) | (1<<16) | (1<<24)));
 194
 195         /*
 196          * Set MPSC Multiplex RMII
 197          * NOTE: ethernet driver modifies bit 0 and 1
 198          */
 199         mv64x60_write(&bh, GT64260_MPP_SERIAL_PORTS_MULTIPLEX, 0x00001102);
 200
 201         /*
 202          * The EV-64260-BP uses several Multi-Purpose Pins (MPP) on the 64260
 203          * bridge as interrupt inputs (via the General Purpose Ports (GPP)
 204          * register).  Need to route the MPP inputs to the GPP and set the
 205          * polarity correctly.
 206          *
 207          * In MPP Control 2 Register
 208          *   MPP 21 -> GPP 21 (DUART channel A intr) bits 20-23 -> 0
 209          *   MPP 22 -> GPP 22 (DUART channel B intr) bits 24-27 -> 0
 210          */
 211         mv64x60_clr_bits(&bh, MV64x60_MPP_CNTL_2, (0xf<<20) | (0xf<<24) );
 212
 213         /*
 214          * In MPP Control 3 Register
 215          *   MPP 26 -> GPP 26 (RTC INT)         bits  8-11 -> 0
 216          *   MPP 27 -> GPP 27 (PCI 0 INTA)      bits 12-15 -> 0
 217          *   MPP 29 -> GPP 29 (PCI 1 INTA)      bits 20-23 -> 0
 218          */
 219         mv64x60_clr_bits(&bh, MV64x60_MPP_CNTL_3, (0xf<<8)|(0xf<<12)|(0xf<<20));
 220
 221 #define GPP_EXTERNAL_INTERRUPTS \
 222                 ((1<<21) | (1<<22) | (1<<26) | (1<<27) | (1<<29))
 223         /* DUART & PCI interrupts are inputs */
 224         mv64x60_clr_bits(&bh, MV64x60_GPP_IO_CNTL, GPP_EXTERNAL_INTERRUPTS);
 225         /* DUART & PCI interrupts are active low */
 226         mv64x60_set_bits(&bh, MV64x60_GPP_LEVEL_CNTL, GPP_EXTERNAL_INTERRUPTS);
 227
 228         /* Clear any pending interrupts for these inputs and enable them. */
 229         mv64x60_write(&bh, MV64x60_GPP_INTR_CAUSE, ~GPP_EXTERNAL_INTERRUPTS);
 230         mv64x60_set_bits(&bh, MV64x60_GPP_INTR_MASK, GPP_EXTERNAL_INTERRUPTS);
 231
 232         return;
 233 }
 234
 235 static void __init
 236 ev64260_setup_bridge(void)
 237 {
 238         struct mv64x60_setup_info       si;
 239         int                             i;
 240
 241         memset(&si, 0, sizeof(si));
 242
 243         si.phys_reg_base = CONFIG_MV64X60_NEW_BASE;
 244
 245         si.pci_0.enable_bus = 1;
 246         si.pci_0.pci_io.cpu_base = EV64260_PCI0_IO_CPU_BASE;
 247         si.pci_0.pci_io.pci_base_hi = 0;
 248         si.pci_0.pci_io.pci_base_lo = EV64260_PCI0_IO_PCI_BASE;
 249         si.pci_0.pci_io.size = EV64260_PCI0_IO_SIZE;
 250         si.pci_0.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
 251         si.pci_0.pci_mem[0].cpu_base = EV64260_PCI0_MEM_CPU_BASE;
 252         si.pci_0.pci_mem[0].pci_base_hi = 0;
 253         si.pci_0.pci_mem[0].pci_base_lo = EV64260_PCI0_MEM_PCI_BASE;
 254         si.pci_0.pci_mem[0].size = EV64260_PCI0_MEM_SIZE;
 255         si.pci_0.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
 256         si.pci_0.pci_cmd_bits = 0;
 257         si.pci_0.latency_timer = 0x8;
 258
 259         si.pci_1.enable_bus = 1;
 260         si.pci_1.pci_io.cpu_base = EV64260_PCI1_IO_CPU_BASE;
 261         si.pci_1.pci_io.pci_base_hi = 0;
 262         si.pci_1.pci_io.pci_base_lo = EV64260_PCI1_IO_PCI_BASE;
 263         si.pci_1.pci_io.size = EV64260_PCI1_IO_SIZE;
 264         si.pci_1.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
 265         si.pci_1.pci_mem[0].cpu_base = EV64260_PCI1_MEM_CPU_BASE;
 266         si.pci_1.pci_mem[0].pci_base_hi = 0;
 267         si.pci_1.pci_mem[0].pci_base_lo = EV64260_PCI1_MEM_PCI_BASE;
 268         si.pci_1.pci_mem[0].size = EV64260_PCI1_MEM_SIZE;
 269         si.pci_1.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
 270         si.pci_1.pci_cmd_bits = 0;
 271         si.pci_1.latency_timer = 0x8;
 272
 273         for (i=0; i<MV64x60_CPU2MEM_WINDOWS; i++) {
 274                 si.cpu_prot_options[i] = 0;
 275                 si.cpu_snoop_options[i] = GT64260_CPU_SNOOP_WB;
 276                 si.pci_0.acc_cntl_options[i] =
 277                         GT64260_PCI_ACC_CNTL_DREADEN |
 278                         GT64260_PCI_ACC_CNTL_RDPREFETCH |
 279                         GT64260_PCI_ACC_CNTL_RDLINEPREFETCH |
 280                         GT64260_PCI_ACC_CNTL_RDMULPREFETCH |
 281                         GT64260_PCI_ACC_CNTL_SWAP_NONE |
 282                         GT64260_PCI_ACC_CNTL_MBURST_32_BTYES;
 283                 si.pci_0.snoop_options[i] = GT64260_PCI_SNOOP_WB;
 284                 si.pci_1.acc_cntl_options[i] =
 285                         GT64260_PCI_ACC_CNTL_DREADEN |
 286                         GT64260_PCI_ACC_CNTL_RDPREFETCH |
 287                         GT64260_PCI_ACC_CNTL_RDLINEPREFETCH |
 288                         GT64260_PCI_ACC_CNTL_RDMULPREFETCH |
 289                         GT64260_PCI_ACC_CNTL_SWAP_NONE |
 290                         GT64260_PCI_ACC_CNTL_MBURST_32_BTYES;
 291                 si.pci_1.snoop_options[i] = GT64260_PCI_SNOOP_WB;
 292         }
 293
 294         /* Lookup PCI host bridges */
 295         if (mv64x60_init(&bh, &si))
 296                 printk(KERN_ERR "Bridge initialization failed.\n");
 297
 298         pci_dram_offset = 0; /* System mem at same addr on PCI & cpu bus */
 299         ppc_md.pci_swizzle = common_swizzle;
 300         ppc_md.pci_map_irq = ev64260_map_irq;
 301         ppc_md.pci_exclude_device = mv64x60_pci_exclude_device;
 302
 303         mv64x60_set_bus(&bh, 0, 0);
 304         bh.hose_a->first_busno = 0;
 305         bh.hose_a->last_busno = 0xff;
 306         bh.hose_a->last_busno = pciauto_bus_scan(bh.hose_a, 0);
 307
 308         bh.hose_b->first_busno = bh.hose_a->last_busno + 1;
 309         mv64x60_set_bus(&bh, 1, bh.hose_b->first_busno);
 310         bh.hose_b->last_busno = 0xff;
 311         bh.hose_b->last_busno = pciauto_bus_scan(bh.hose_b,
 312                 bh.hose_b->first_busno);
 313
 314         return;
 315 }
 316
 317 #if defined(CONFIG_SERIAL_8250) && !defined(CONFIG_SERIAL_MPSC_CONSOLE)
 318 static void __init
 319 ev64260_early_serial_map(void)
 320 {
 321         struct uart_port        port;
 322         static char             first_time = 1;
 323
 324         if (first_time) {
 325                 memset(&port, 0, sizeof(port));
 326
 327                 port.membase = ioremap(EV64260_SERIAL_0, EV64260_UART_SIZE);
 328                 port.irq = EV64260_UART_0_IRQ;
 329                 port.uartclk = BASE_BAUD * 16;
 330                 port.regshift = 2;
 331                 port.iotype = UPIO_MEM;
 332                 port.flags = STD_COM_FLAGS;
 333
 334 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
 335                 gen550_init(0, &port);
 336 #endif
 337
 338                 if (early_serial_setup(&port) != 0)
 339                         printk(KERN_WARNING "Early serial init of port 0 "
 340                                 "failed\n");
 341
 342                 first_time = 0;
 343         }
 344
 345         return;
 346 }
 347 #elif defined(CONFIG_SERIAL_MPSC_CONSOLE)
 348 static void __init
 349 ev64260_early_serial_map(void)
 350 {
 351 }
 352 #endif
 353
 354 static void __init
 355 ev64260_setup_arch(void)
 356 {
 357         if (ppc_md.progress)
 358                 ppc_md.progress("ev64260_setup_arch: enter", 0);
 359
 360 #ifdef CONFIG_BLK_DEV_INITRD
 361         if (initrd_start)
 362                 ROOT_DEV = Root_RAM0;
 363         else
 364 #endif
 365 #ifdef  CONFIG_ROOT_NFS
 366                 ROOT_DEV = Root_NFS;
 367 #else
 368                 ROOT_DEV = Root_SDA2;
 369 #endif
 370
 371         if (ppc_md.progress)
 372                 ppc_md.progress("ev64260_setup_arch: Enabling L2 cache", 0);
 373
 374         /* Enable L2 and L3 caches (if 745x) */
 375         _set_L2CR(_get_L2CR() | L2CR_L2E);
 376         _set_L3CR(_get_L3CR() | L3CR_L3E);
 377
 378         if (ppc_md.progress)
 379                 ppc_md.progress("ev64260_setup_arch: Initializing bridge", 0);
 380
 381         ev64260_setup_bridge();         /* set up PCI bridge(s) */
 382         ev64260_setup_peripherals();    /* set up chip selects/GPP/MPP etc */
 383
 384         if (ppc_md.progress)
 385                 ppc_md.progress("ev64260_setup_arch: bridge init complete", 0);
 386
 387 #if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_MPSC_CONSOLE)
 388         ev64260_early_serial_map();
 389 #endif
 390
 391         printk(KERN_INFO "%s %s port (C) 2001 MontaVista Software, Inc. "
 392                 "(source@mvista.com)\n", BOARD_VENDOR, BOARD_MACHINE);
 393
 394         if (ppc_md.progress)
 395                 ppc_md.progress("ev64260_setup_arch: exit", 0);
 396
 397         return;
 398 }
 399
 400 /* Platform device data fixup routines. */
 401 #if defined(CONFIG_SERIAL_MPSC)
 402 static void __init
 403 ev64260_fixup_mpsc_pdata(struct platform_device *pdev)
 404 {
 405         struct mpsc_pdata *pdata;
 406
 407         pdata = (struct mpsc_pdata *)pdev->dev.platform_data;
 408
 409         pdata->max_idle = 40;
 410         pdata->default_baud = EV64260_DEFAULT_BAUD;
 411         pdata->brg_clk_src = EV64260_MPSC_CLK_SRC;
 412         pdata->brg_clk_freq = EV64260_MPSC_CLK_FREQ;
 413
 414         return;
 415 }
 416
 417 static int
 418 ev64260_platform_notify(struct device *dev)
 419 {
 420         static struct {
 421                 char    *bus_id;
 422                 void    ((*rtn)(struct platform_device *pdev));
 423         } dev_map[] = {
 424                 { MPSC_CTLR_NAME ".0", ev64260_fixup_mpsc_pdata },
 425                 { MPSC_CTLR_NAME ".1", ev64260_fixup_mpsc_pdata },
 426         };
 427         struct platform_device  *pdev;
 428         int     i;
 429
 430         if (dev && dev->bus_id)
 431                 for (i=0; i<ARRAY_SIZE(dev_map); i++)
 432                         if (!strncmp(dev->bus_id, dev_map[i].bus_id,
 433                                 BUS_ID_SIZE)) {
 434
 435                                 pdev = container_of(dev,
 436                                         struct platform_device, dev);
 437                                 dev_map[i].rtn(pdev);
 438                         }
 439
 440         return 0;
 441 }
 442 #endif
 443
 444 static void
 445 ev64260_reset_board(void *addr)
 446 {
 447         local_irq_disable();
 448
 449         /* disable and invalidate the L2 cache */
 450         _set_L2CR(0);
 451         _set_L2CR(0x200000);
 452
 453         /* flush and disable L1 I/D cache */
 454         __asm__ __volatile__
 455         ("mfspr   3,1008\n\t"
 456          "ori   5,5,0xcc00\n\t"
 457          "ori   4,3,0xc00\n\t"
 458          "andc  5,3,5\n\t"
 459          "sync\n\t"
 460          "mtspr 1008,4\n\t"
 461          "isync\n\t"
 462          "sync\n\t"
 463          "mtspr 1008,5\n\t"
 464          "isync\n\t"
 465          "sync\n\t");
 466
 467         /* unmap any other random cs's that might overlap with bootcs */
 468         mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_0_WIN, 0, 0, 0);
 469         bh.ci->disable_window_32bit(&bh, MV64x60_CPU2DEV_0_WIN);
 470         mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_1_WIN, 0, 0, 0);
 471         bh.ci->disable_window_32bit(&bh, MV64x60_CPU2DEV_1_WIN);
 472         mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_2_WIN, 0, 0, 0);
 473         bh.ci->disable_window_32bit(&bh, MV64x60_CPU2DEV_2_WIN);
 474         mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_3_WIN, 0, 0, 0);
 475         bh.ci->disable_window_32bit(&bh, MV64x60_CPU2DEV_3_WIN);
 476
 477         /* map bootrom back in to gt @ reset defaults */
 478         mv64x60_set_32bit_window(&bh, MV64x60_CPU2BOOT_WIN,
 479                                                 0xff800000, 8*1024*1024, 0);
 480         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2BOOT_WIN);
 481
 482         /* move reg base back to default, setup default pci0 */
 483         mv64x60_write(&bh, MV64x60_INTERNAL_SPACE_DECODE,
 484                 (1<<24) | CONFIG_MV64X60_BASE >> 20);
 485
 486         /* NOTE: FROM NOW ON no more GT_REGS accesses.. 0x1 is not mapped
 487          * via BAT or MMU, and MSR IR/DR is ON */
 488         /* SRR0 has system reset vector, SRR1 has default MSR value */
 489         /* rfi restores MSR from SRR1 and sets the PC to the SRR0 value */
 490         /* NOTE: assumes reset vector is at 0xfff00100 */
 491         __asm__ __volatile__
 492         ("mtspr   26, %0\n\t"
 493          "li      4,(1<<6)\n\t"
 494          "mtspr   27,4\n\t"
 495          "rfi\n\t"
 496          :: "r" (addr):"r4");
 497
 498         return;
 499 }
 500
 501 static void
 502 ev64260_restart(char *cmd)
 503 {
 504         volatile ulong  i = 10000000;
 505
 506         ev64260_reset_board((void *)0xfff00100);
 507
 508         while (i-- > 0);
 509         panic("restart failed\n");
 510 }
 511
 512 static void
 513 ev64260_halt(void)
 514 {
 515         local_irq_disable();
 516         while (1);
 517         /* NOTREACHED */
 518 }
 519
 520 static void
 521 ev64260_power_off(void)
 522 {
 523         ev64260_halt();
 524         /* NOTREACHED */
 525 }
 526
 527 static int
 528 ev64260_show_cpuinfo(struct seq_file *m)
 529 {
 530         uint pvid;
 531
 532         pvid = mfspr(SPRN_PVR);
 533         seq_printf(m, "vendor\t\t: " BOARD_VENDOR "\n");
 534         seq_printf(m, "machine\t\t: " BOARD_MACHINE "\n");
 535         seq_printf(m, "cpu MHz\t\t: %d\n", ev64260_get_cpu_speed()/1000/1000);
 536         seq_printf(m, "bus MHz\t\t: %d\n", ev64260_get_bus_speed()/1000/1000);
 537
 538         return 0;
 539 }
 540
 541 /* DS1501 RTC has too much variation to use RTC for calibration */
 542 static void __init
 543 ev64260_calibrate_decr(void)
 544 {
 545         ulong freq;
 546
 547         freq = ev64260_get_bus_speed()/4;
 548
 549         printk(KERN_INFO "time_init: decrementer frequency = %lu.%.6lu MHz\n",
 550                freq/1000000, freq%1000000);
 551
 552         tb_ticks_per_jiffy = freq / HZ;
 553         tb_to_us = mulhwu_scale_factor(freq, 1000000);
 554
 555         return;
 556 }
 557
 558 /*
 559  * Set BAT 3 to map 0xfb000000 to 0xfc000000 of physical memory space.
 560  */
 561 static __inline__ void
 562 ev64260_set_bat(void)
 563 {
 564         mb();
 565         mtspr(SPRN_DBAT1U, 0xfb0001fe);
 566         mtspr(SPRN_DBAT1L, 0xfb00002a);
 567         mb();
 568
 569         return;
 570 }
 571
 572 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
 573 static void __init
 574 ev64260_map_io(void)
 575 {
 576         io_block_mapping(0xfb000000, 0xfb000000, 0x01000000, _PAGE_IO);
 577 }
 578 #endif
 579
 580 void __init
 581 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 582               unsigned long r6, unsigned long r7)
 583 {
 584 #ifdef CONFIG_BLK_DEV_INITRD
 585         extern int      initrd_below_start_ok;
 586
 587         initrd_start=initrd_end=0;
 588         initrd_below_start_ok=0;
 589 #endif /* CONFIG_BLK_DEV_INITRD */
 590
 591         parse_bootinfo(find_bootinfo());
 592
 593         isa_mem_base = 0;
 594         isa_io_base = EV64260_PCI0_IO_CPU_BASE;
 595         pci_dram_offset = EV64260_PCI0_MEM_CPU_BASE;
 596
 597         loops_per_jiffy = ev64260_get_cpu_speed() / HZ;
 598
 599         ppc_md.setup_arch = ev64260_setup_arch;
 600         ppc_md.show_cpuinfo = ev64260_show_cpuinfo;
 601         ppc_md.init_IRQ = gt64260_init_irq;
 602         ppc_md.get_irq = gt64260_get_irq;
 603
 604         ppc_md.restart = ev64260_restart;
 605         ppc_md.power_off = ev64260_power_off;
 606         ppc_md.halt = ev64260_halt;
 607
 608         ppc_md.find_end_of_memory = ev64260_find_end_of_memory;
 609
 610         ppc_md.init = NULL;
 611
 612         ppc_md.time_init = todc_time_init;
 613         ppc_md.set_rtc_time = todc_set_rtc_time;
 614         ppc_md.get_rtc_time = todc_get_rtc_time;
 615         ppc_md.nvram_read_val = todc_direct_read_val;
 616         ppc_md.nvram_write_val = todc_direct_write_val;
 617         ppc_md.calibrate_decr = ev64260_calibrate_decr;
 618
 619         bh.p_base = CONFIG_MV64X60_NEW_BASE;
 620
 621         ev64260_set_bat();
 622
 623 #ifdef  CONFIG_SERIAL_8250
 624 #if defined(CONFIG_SERIAL_TEXT_DEBUG)
 625         ppc_md.setup_io_mappings = ev64260_map_io;
 626         ppc_md.progress = gen550_progress;
 627 #endif
 628 #if defined(CONFIG_KGDB)
 629         ppc_md.setup_io_mappings = ev64260_map_io;
 630         ppc_md.early_serial_map = ev64260_early_serial_map;
 631 #endif
 632 #elif defined(CONFIG_SERIAL_MPSC_CONSOLE)
 633 #ifdef  CONFIG_SERIAL_TEXT_DEBUG
 634         ppc_md.setup_io_mappings = ev64260_map_io;
 635         ppc_md.progress = mv64x60_mpsc_progress;
 636         mv64x60_progress_init(CONFIG_MV64X60_NEW_BASE);
 637 #endif  /* CONFIG_SERIAL_TEXT_DEBUG */
 638 #ifdef  CONFIG_KGDB
 639         ppc_md.setup_io_mappings = ev64260_map_io;
 640         ppc_md.early_serial_map = ev64260_early_serial_map;
 641 #endif  /* CONFIG_KGDB */
 642
 643 #endif
 644
 645 #if defined(CONFIG_SERIAL_MPSC)
 646         platform_notify = ev64260_platform_notify;
 647 #endif
 648
 649         return;
 650 }