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   1
   2 /*
   3  * arch/ppc/platforms/hdpu_setup.c
   4  *
   5  * Board setup routines for the Sky Computers HDPU Compute Blade.
   6  *
   7  * Written by Brian Waite <waite@skycomputers.com>
   8  *
   9  * Based on code done by - Mark A. Greer <mgreer@mvista.com>
  10  *                         Rabeeh Khoury - rabeeh@galileo.co.il
  11  *
  12  * This program is free software; you can redistribute  it and/or modify it
  13  * under  the terms of  the GNU General  Public License as published by the
  14  * Free Software Foundation;  either version 2 of the  License, or (at your
  15  * option) any later version.
  16  */
  17
  18 #include <linux/config.h>
  19
  20 #include <linux/pci.h>
  21 #include <linux/delay.h>
  22 #include <linux/irq.h>
  23 #include <linux/ide.h>
  24 #include <linux/seq_file.h>
  25 #include <linux/platform_device.h>
  26
  27 #include <linux/initrd.h>
  28 #include <linux/root_dev.h>
  29 #include <linux/smp.h>
  30
  31 #include <asm/time.h>
  32 #include <asm/machdep.h>
  33 #include <asm/todc.h>
  34 #include <asm/mv64x60.h>
  35 #include <asm/ppcboot.h>
  36 #include <platforms/hdpu.h>
  37 #include <linux/mv643xx.h>
  38 #include <linux/hdpu_features.h>
  39 #include <linux/device.h>
  40 #include <linux/mtd/physmap.h>
  41
  42 #define BOARD_VENDOR    "Sky Computers"
  43 #define BOARD_MACHINE   "HDPU-CB-A"
  44
  45 bd_t ppcboot_bd;
  46 int ppcboot_bd_valid = 0;
  47
  48 static mv64x60_handle_t bh;
  49
  50 extern char cmd_line[];
  51
  52 unsigned long hdpu_find_end_of_memory(void);
  53 void hdpu_mpsc_progress(char *s, unsigned short hex);
  54 void hdpu_heartbeat(void);
  55
  56 static void parse_bootinfo(unsigned long r3,
  57                            unsigned long r4, unsigned long r5,
  58                            unsigned long r6, unsigned long r7);
  59 static void hdpu_set_l1pe(void);
  60 static void hdpu_cpustate_set(unsigned char new_state);
  61 #ifdef CONFIG_SMP
  62 static DEFINE_SPINLOCK(timebase_lock);
  63 static unsigned int timebase_upper = 0, timebase_lower = 0;
  64 extern int smp_tb_synchronized;
  65
  66 void __devinit hdpu_tben_give(void);
  67 void __devinit hdpu_tben_take(void);
  68 #endif
  69
  70 static int __init
  71 hdpu_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
  72 {
  73         struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
  74
  75         if (hose->index == 0) {
  76                 static char pci_irq_table[][4] = {
  77                         {HDPU_PCI_0_IRQ, 0, 0, 0},
  78                         {HDPU_PCI_0_IRQ, 0, 0, 0},
  79                 };
  80
  81                 const long min_idsel = 1, max_idsel = 2, irqs_per_slot = 4;
  82                 return PCI_IRQ_TABLE_LOOKUP;
  83         } else {
  84                 static char pci_irq_table[][4] = {
  85                         {HDPU_PCI_1_IRQ, 0, 0, 0},
  86                 };
  87
  88                 const long min_idsel = 1, max_idsel = 1, irqs_per_slot = 4;
  89                 return PCI_IRQ_TABLE_LOOKUP;
  90         }
  91 }
  92
  93 static void __init hdpu_intr_setup(void)
  94 {
  95         mv64x60_write(&bh, MV64x60_GPP_IO_CNTL,
  96                       (1 | (1 << 2) | (1 << 3) | (1 << 4) | (1 << 5) |
  97                        (1 << 6) | (1 << 7) | (1 << 12) | (1 << 16) |
  98                        (1 << 18) | (1 << 19) | (1 << 20) | (1 << 21) |
  99                        (1 << 22) | (1 << 23) | (1 << 24) | (1 << 25) |
 100                        (1 << 26) | (1 << 27) | (1 << 28) | (1 << 29)));
 101
 102         /* XXXX Erranum FEr PCI-#8 */
 103         mv64x60_clr_bits(&bh, MV64x60_PCI0_CMD, (1 << 5) | (1 << 9));
 104         mv64x60_clr_bits(&bh, MV64x60_PCI1_CMD, (1 << 5) | (1 << 9));
 105
 106         /*
 107          * Dismiss and then enable interrupt on GPP interrupt cause
 108          * for CPU #0
 109          */
 110         mv64x60_write(&bh, MV64x60_GPP_INTR_CAUSE, ~((1 << 8) | (1 << 13)));
 111         mv64x60_set_bits(&bh, MV64x60_GPP_INTR_MASK, (1 << 8) | (1 << 13));
 112
 113         /*
 114          * Dismiss and then enable interrupt on CPU #0 high cause reg
 115          * BIT25 summarizes GPP interrupts 8-15
 116          */
 117         mv64x60_set_bits(&bh, MV64360_IC_CPU0_INTR_MASK_HI, (1 << 25));
 118 }
 119
 120 static void __init hdpu_setup_peripherals(void)
 121 {
 122         unsigned int val;
 123
 124         mv64x60_set_32bit_window(&bh, MV64x60_CPU2BOOT_WIN,
 125                                  HDPU_EMB_FLASH_BASE, HDPU_EMB_FLASH_SIZE, 0);
 126         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2BOOT_WIN);
 127
 128         mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_0_WIN,
 129                                  HDPU_TBEN_BASE, HDPU_TBEN_SIZE, 0);
 130         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_0_WIN);
 131
 132         mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_1_WIN,
 133                                  HDPU_NEXUS_ID_BASE, HDPU_NEXUS_ID_SIZE, 0);
 134         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_1_WIN);
 135
 136         mv64x60_set_32bit_window(&bh, MV64x60_CPU2SRAM_WIN,
 137                                  HDPU_INTERNAL_SRAM_BASE,
 138                                  HDPU_INTERNAL_SRAM_SIZE, 0);
 139         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2SRAM_WIN);
 140
 141         bh.ci->disable_window_32bit(&bh, MV64x60_ENET2MEM_4_WIN);
 142         mv64x60_set_32bit_window(&bh, MV64x60_ENET2MEM_4_WIN, 0, 0, 0);
 143
 144         mv64x60_clr_bits(&bh, MV64x60_PCI0_PCI_DECODE_CNTL, (1 << 3));
 145         mv64x60_clr_bits(&bh, MV64x60_PCI1_PCI_DECODE_CNTL, (1 << 3));
 146         mv64x60_clr_bits(&bh, MV64x60_TIMR_CNTR_0_3_CNTL,
 147                          ((1 << 0) | (1 << 8) | (1 << 16) | (1 << 24)));
 148
 149         /* Enable pipelining */
 150         mv64x60_set_bits(&bh, MV64x60_CPU_CONFIG, (1 << 13));
 151         /* Enable Snoop Pipelineing */
 152         mv64x60_set_bits(&bh, MV64360_D_UNIT_CONTROL_HIGH, (1 << 24));
 153
 154         /*
 155          * Change DRAM read buffer assignment.
 156          * Assign read buffer 0 dedicated only for CPU,
 157          * and the rest read buffer 1.
 158          */
 159         val = mv64x60_read(&bh, MV64360_SDRAM_CONFIG);
 160         val = val & 0x03ffffff;
 161         val = val | 0xf8000000;
 162         mv64x60_write(&bh, MV64360_SDRAM_CONFIG, val);
 163
 164         /*
 165          * Configure internal SRAM -
 166          * Cache coherent write back, if CONFIG_MV64360_SRAM_CACHE_COHERENT set
 167          * Parity enabled.
 168          * Parity error propagation
 169          * Arbitration not parked for CPU only
 170          * Other bits are reserved.
 171          */
 172 #ifdef CONFIG_MV64360_SRAM_CACHE_COHERENT
 173         mv64x60_write(&bh, MV64360_SRAM_CONFIG, 0x001600b2);
 174 #else
 175         mv64x60_write(&bh, MV64360_SRAM_CONFIG, 0x001600b0);
 176 #endif
 177
 178         hdpu_intr_setup();
 179 }
 180
 181 static void __init hdpu_setup_bridge(void)
 182 {
 183         struct mv64x60_setup_info si;
 184         int i;
 185
 186         memset(&si, 0, sizeof(si));
 187
 188         si.phys_reg_base = HDPU_BRIDGE_REG_BASE;
 189         si.pci_0.enable_bus = 1;
 190         si.pci_0.pci_io.cpu_base = HDPU_PCI0_IO_START_PROC_ADDR;
 191         si.pci_0.pci_io.pci_base_hi = 0;
 192         si.pci_0.pci_io.pci_base_lo = HDPU_PCI0_IO_START_PCI_ADDR;
 193         si.pci_0.pci_io.size = HDPU_PCI0_IO_SIZE;
 194         si.pci_0.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
 195         si.pci_0.pci_mem[0].cpu_base = HDPU_PCI0_MEM_START_PROC_ADDR;
 196         si.pci_0.pci_mem[0].pci_base_hi = HDPU_PCI0_MEM_START_PCI_HI_ADDR;
 197         si.pci_0.pci_mem[0].pci_base_lo = HDPU_PCI0_MEM_START_PCI_LO_ADDR;
 198         si.pci_0.pci_mem[0].size = HDPU_PCI0_MEM_SIZE;
 199         si.pci_0.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
 200         si.pci_0.pci_cmd_bits = 0;
 201         si.pci_0.latency_timer = 0x80;
 202
 203         si.pci_1.enable_bus = 1;
 204         si.pci_1.pci_io.cpu_base = HDPU_PCI1_IO_START_PROC_ADDR;
 205         si.pci_1.pci_io.pci_base_hi = 0;
 206         si.pci_1.pci_io.pci_base_lo = HDPU_PCI1_IO_START_PCI_ADDR;
 207         si.pci_1.pci_io.size = HDPU_PCI1_IO_SIZE;
 208         si.pci_1.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
 209         si.pci_1.pci_mem[0].cpu_base = HDPU_PCI1_MEM_START_PROC_ADDR;
 210         si.pci_1.pci_mem[0].pci_base_hi = HDPU_PCI1_MEM_START_PCI_HI_ADDR;
 211         si.pci_1.pci_mem[0].pci_base_lo = HDPU_PCI1_MEM_START_PCI_LO_ADDR;
 212         si.pci_1.pci_mem[0].size = HDPU_PCI1_MEM_SIZE;
 213         si.pci_1.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
 214         si.pci_1.pci_cmd_bits = 0;
 215         si.pci_1.latency_timer = 0x80;
 216
 217         for (i = 0; i < MV64x60_CPU2MEM_WINDOWS; i++) {
 218 #if defined(CONFIG_NOT_COHERENT_CACHE)
 219                 si.cpu_prot_options[i] = 0;
 220                 si.enet_options[i] = MV64360_ENET2MEM_SNOOP_NONE;
 221                 si.mpsc_options[i] = MV64360_MPSC2MEM_SNOOP_NONE;
 222                 si.idma_options[i] = MV64360_IDMA2MEM_SNOOP_NONE;
 223
 224                 si.pci_1.acc_cntl_options[i] =
 225                     MV64360_PCI_ACC_CNTL_SNOOP_NONE |
 226                     MV64360_PCI_ACC_CNTL_SWAP_NONE |
 227                     MV64360_PCI_ACC_CNTL_MBURST_128_BYTES |
 228                     MV64360_PCI_ACC_CNTL_RDSIZE_256_BYTES;
 229
 230                 si.pci_0.acc_cntl_options[i] =
 231                     MV64360_PCI_ACC_CNTL_SNOOP_NONE |
 232                     MV64360_PCI_ACC_CNTL_SWAP_NONE |
 233                     MV64360_PCI_ACC_CNTL_MBURST_128_BYTES |
 234                     MV64360_PCI_ACC_CNTL_RDSIZE_256_BYTES;
 235
 236 #else
 237                 si.cpu_prot_options[i] = 0;
 238                 si.enet_options[i] = MV64360_ENET2MEM_SNOOP_WB; /* errata */
 239                 si.mpsc_options[i] = MV64360_MPSC2MEM_SNOOP_WB; /* errata */
 240                 si.idma_options[i] = MV64360_IDMA2MEM_SNOOP_WB; /* errata */
 241
 242                 si.pci_0.acc_cntl_options[i] =
 243                     MV64360_PCI_ACC_CNTL_SNOOP_WB |
 244                     MV64360_PCI_ACC_CNTL_SWAP_NONE |
 245                     MV64360_PCI_ACC_CNTL_MBURST_32_BYTES |
 246                     MV64360_PCI_ACC_CNTL_RDSIZE_256_BYTES;
 247
 248                 si.pci_1.acc_cntl_options[i] =
 249                     MV64360_PCI_ACC_CNTL_SNOOP_WB |
 250                     MV64360_PCI_ACC_CNTL_SWAP_NONE |
 251                     MV64360_PCI_ACC_CNTL_MBURST_32_BYTES |
 252                     MV64360_PCI_ACC_CNTL_RDSIZE_256_BYTES;
 253 #endif
 254         }
 255
 256         hdpu_cpustate_set(CPUSTATE_KERNEL_MAJOR | CPUSTATE_KERNEL_INIT_PCI);
 257
 258         /* Lookup PCI host bridges */
 259         mv64x60_init(&bh, &si);
 260         pci_dram_offset = 0;    /* System mem at same addr on PCI & cpu bus */
 261         ppc_md.pci_swizzle = common_swizzle;
 262         ppc_md.pci_map_irq = hdpu_map_irq;
 263
 264         mv64x60_set_bus(&bh, 0, 0);
 265         bh.hose_a->first_busno = 0;
 266         bh.hose_a->last_busno = 0xff;
 267         bh.hose_a->last_busno = pciauto_bus_scan(bh.hose_a, 0);
 268
 269         bh.hose_b->first_busno = bh.hose_a->last_busno + 1;
 270         mv64x60_set_bus(&bh, 1, bh.hose_b->first_busno);
 271         bh.hose_b->last_busno = 0xff;
 272         bh.hose_b->last_busno = pciauto_bus_scan(bh.hose_b,
 273                 bh.hose_b->first_busno);
 274
 275         ppc_md.pci_exclude_device = mv64x60_pci_exclude_device;
 276
 277         hdpu_cpustate_set(CPUSTATE_KERNEL_MAJOR | CPUSTATE_KERNEL_INIT_REG);
 278         /*
 279          * Enabling of PCI internal-vs-external arbitration
 280          * is a platform- and errata-dependent decision.
 281          */
 282         return;
 283 }
 284
 285 #if defined(CONFIG_SERIAL_MPSC_CONSOLE)
 286 static void __init hdpu_early_serial_map(void)
 287 {
 288 #ifdef  CONFIG_KGDB
 289         static char first_time = 1;
 290
 291 #if defined(CONFIG_KGDB_TTYS0)
 292 #define KGDB_PORT 0
 293 #elif defined(CONFIG_KGDB_TTYS1)
 294 #define KGDB_PORT 1
 295 #else
 296 #error "Invalid kgdb_tty port"
 297 #endif
 298
 299         if (first_time) {
 300                 gt_early_mpsc_init(KGDB_PORT,
 301                                    B9600 | CS8 | CREAD | HUPCL | CLOCAL);
 302                 first_time = 0;
 303         }
 304
 305         return;
 306 #endif
 307 }
 308 #endif
 309
 310 static void hdpu_init2(void)
 311 {
 312         return;
 313 }
 314
 315 #if defined(CONFIG_MV643XX_ETH)
 316 static void __init hdpu_fixup_eth_pdata(struct platform_device *pd)
 317 {
 318
 319         struct mv643xx_eth_platform_data *eth_pd;
 320         eth_pd = pd->dev.platform_data;
 321
 322         eth_pd->force_phy_addr = 1;
 323         eth_pd->phy_addr = pd->id;
 324         eth_pd->speed = SPEED_100;
 325         eth_pd->duplex = DUPLEX_FULL;
 326         eth_pd->tx_queue_size = 400;
 327         eth_pd->rx_queue_size = 800;
 328 }
 329 #endif
 330
 331 static void __init hdpu_fixup_mpsc_pdata(struct platform_device *pd)
 332 {
 333
 334         struct mpsc_pdata *pdata;
 335
 336         pdata = (struct mpsc_pdata *)pd->dev.platform_data;
 337
 338         pdata->max_idle = 40;
 339         if (ppcboot_bd_valid)
 340                 pdata->default_baud = ppcboot_bd.bi_baudrate;
 341         else
 342                 pdata->default_baud = HDPU_DEFAULT_BAUD;
 343         pdata->brg_clk_src = HDPU_MPSC_CLK_SRC;
 344         pdata->brg_clk_freq = HDPU_MPSC_CLK_FREQ;
 345 }
 346
 347 #if defined(CONFIG_HDPU_FEATURES)
 348 static void __init hdpu_fixup_cpustate_pdata(struct platform_device *pd)
 349 {
 350         struct platform_device *pds[1];
 351         pds[0] = pd;
 352         mv64x60_pd_fixup(&bh, pds, 1);
 353 }
 354 #endif
 355
 356 static int __init hdpu_platform_notify(struct device *dev)
 357 {
 358         static struct {
 359                 char *bus_id;
 360                 void ((*rtn) (struct platform_device * pdev));
 361         } dev_map[] = {
 362                 {
 363                 MPSC_CTLR_NAME ".0", hdpu_fixup_mpsc_pdata},
 364 #if defined(CONFIG_MV643XX_ETH)
 365                 {
 366                 MV643XX_ETH_NAME ".0", hdpu_fixup_eth_pdata},
 367 #endif
 368 #if defined(CONFIG_HDPU_FEATURES)
 369                 {
 370                 HDPU_CPUSTATE_NAME ".0", hdpu_fixup_cpustate_pdata},
 371 #endif
 372         };
 373         struct platform_device *pdev;
 374         int i;
 375
 376         if (dev && dev->bus_id)
 377                 for (i = 0; i < ARRAY_SIZE(dev_map); i++)
 378                         if (!strncmp(dev->bus_id, dev_map[i].bus_id,
 379                                      BUS_ID_SIZE)) {
 380
 381                                 pdev = container_of(dev,
 382                                                     struct platform_device,
 383                                                     dev);
 384                                 dev_map[i].rtn(pdev);
 385                         }
 386
 387         return 0;
 388 }
 389
 390 static void __init hdpu_setup_arch(void)
 391 {
 392         if (ppc_md.progress)
 393                 ppc_md.progress("hdpu_setup_arch: enter", 0);
 394 #ifdef CONFIG_BLK_DEV_INITRD
 395         if (initrd_start)
 396                 ROOT_DEV = Root_RAM0;
 397         else
 398 #endif
 399 #ifdef  CONFIG_ROOT_NFS
 400                 ROOT_DEV = Root_NFS;
 401 #else
 402                 ROOT_DEV = Root_SDA2;
 403 #endif
 404
 405         ppc_md.heartbeat = hdpu_heartbeat;
 406
 407         ppc_md.heartbeat_reset = HZ;
 408         ppc_md.heartbeat_count = 1;
 409
 410         if (ppc_md.progress)
 411                 ppc_md.progress("hdpu_setup_arch: Enabling L2 cache", 0);
 412
 413         /* Enable L1 Parity Bits */
 414         hdpu_set_l1pe();
 415
 416         /* Enable L2 and L3 caches (if 745x) */
 417         _set_L2CR(0x80080000);
 418
 419         if (ppc_md.progress)
 420                 ppc_md.progress("hdpu_setup_arch: enter", 0);
 421
 422         hdpu_setup_bridge();
 423
 424         hdpu_setup_peripherals();
 425
 426 #ifdef CONFIG_SERIAL_MPSC_CONSOLE
 427         hdpu_early_serial_map();
 428 #endif
 429
 430         printk("SKY HDPU Compute Blade \n");
 431
 432         if (ppc_md.progress)
 433                 ppc_md.progress("hdpu_setup_arch: exit", 0);
 434
 435         hdpu_cpustate_set(CPUSTATE_KERNEL_MAJOR | CPUSTATE_KERNEL_OK);
 436         return;
 437 }
 438 static void __init hdpu_init_irq(void)
 439 {
 440         mv64360_init_irq();
 441 }
 442
 443 static void __init hdpu_set_l1pe()
 444 {
 445         unsigned long ictrl;
 446         asm volatile ("mfspr %0, 1011":"=r" (ictrl):);
 447         ictrl |= ICTRL_EICE | ICTRL_EDC | ICTRL_EICP;
 448         asm volatile ("mtspr 1011, %0"::"r" (ictrl));
 449 }
 450
 451 /*
 452  * Set BAT 1 to map 0xf1000000 to end of physical memory space.
 453  */
 454 static __inline__ void hdpu_set_bat(void)
 455 {
 456         mb();
 457         mtspr(SPRN_DBAT1U, 0xf10001fe);
 458         mtspr(SPRN_DBAT1L, 0xf100002a);
 459         mb();
 460
 461         return;
 462 }
 463
 464 unsigned long __init hdpu_find_end_of_memory(void)
 465 {
 466         return mv64x60_get_mem_size(CONFIG_MV64X60_NEW_BASE,
 467                                     MV64x60_TYPE_MV64360);
 468 }
 469
 470 static void hdpu_reset_board(void)
 471 {
 472         volatile int infinite = 1;
 473
 474         hdpu_cpustate_set(CPUSTATE_KERNEL_MAJOR | CPUSTATE_KERNEL_RESET);
 475
 476         local_irq_disable();
 477
 478         /* Clear all the LEDs */
 479         mv64x60_write(&bh, MV64x60_GPP_VALUE_CLR, ((1 << 4) |
 480                                                    (1 << 5) | (1 << 6)));
 481
 482         /* disable and invalidate the L2 cache */
 483         _set_L2CR(0);
 484         _set_L2CR(0x200000);
 485
 486         /* flush and disable L1 I/D cache */
 487         __asm__ __volatile__
 488             ("\n"
 489              "mfspr   3,1008\n"
 490              "ori       5,5,0xcc00\n"
 491              "ori       4,3,0xc00\n"
 492              "andc      5,3,5\n"
 493              "sync\n"
 494              "mtspr     1008,4\n"
 495              "isync\n" "sync\n" "mtspr  1008,5\n" "isync\n" "sync\n");
 496
 497         /* Hit the reset bit */
 498         mv64x60_write(&bh, MV64x60_GPP_VALUE_CLR, (1 << 3));
 499
 500         while (infinite)
 501                 infinite = infinite;
 502
 503         return;
 504 }
 505
 506 static void hdpu_restart(char *cmd)
 507 {
 508         volatile ulong i = 10000000;
 509
 510         hdpu_reset_board();
 511
 512         while (i-- > 0) ;
 513         panic("restart failed\n");
 514 }
 515
 516 static void hdpu_halt(void)
 517 {
 518         local_irq_disable();
 519
 520         hdpu_cpustate_set(CPUSTATE_KERNEL_MAJOR | CPUSTATE_KERNEL_HALT);
 521
 522         /* Clear all the LEDs */
 523         mv64x60_write(&bh, MV64x60_GPP_VALUE_CLR, ((1 << 4) | (1 << 5) |
 524                                                    (1 << 6)));
 525         while (1) ;
 526         /* NOTREACHED */
 527 }
 528
 529 static void hdpu_power_off(void)
 530 {
 531         hdpu_halt();
 532         /* NOTREACHED */
 533 }
 534
 535 static int hdpu_show_cpuinfo(struct seq_file *m)
 536 {
 537         uint pvid;
 538
 539         pvid = mfspr(SPRN_PVR);
 540         seq_printf(m, "vendor\t\t: Sky Computers\n");
 541         seq_printf(m, "machine\t\t: HDPU Compute Blade\n");
 542         seq_printf(m, "PVID\t\t: 0x%x, vendor: %s\n",
 543                    pvid, (pvid & (1 << 15) ? "IBM" : "Motorola"));
 544
 545         return 0;
 546 }
 547
 548 static void __init hdpu_calibrate_decr(void)
 549 {
 550         ulong freq;
 551
 552         if (ppcboot_bd_valid)
 553                 freq = ppcboot_bd.bi_busfreq / 4;
 554         else
 555                 freq = 133000000;
 556
 557         printk("time_init: decrementer frequency = %lu.%.6lu MHz\n",
 558                freq / 1000000, freq % 1000000);
 559
 560         tb_ticks_per_jiffy = freq / HZ;
 561         tb_to_us = mulhwu_scale_factor(freq, 1000000);
 562
 563         return;
 564 }
 565
 566 static void parse_bootinfo(unsigned long r3,
 567                            unsigned long r4, unsigned long r5,
 568                            unsigned long r6, unsigned long r7)
 569 {
 570         bd_t *bd = NULL;
 571         char *cmdline_start = NULL;
 572         int cmdline_len = 0;
 573
 574         if (r3) {
 575                 if ((r3 & 0xf0000000) == 0)
 576                         r3 += KERNELBASE;
 577                 if ((r3 & 0xf0000000) == KERNELBASE) {
 578                         bd = (void *)r3;
 579
 580                         memcpy(&ppcboot_bd, bd, sizeof(ppcboot_bd));
 581                         ppcboot_bd_valid = 1;
 582                 }
 583         }
 584 #ifdef CONFIG_BLK_DEV_INITRD
 585         if (r4 && r5 && r5 > r4) {
 586                 if ((r4 & 0xf0000000) == 0)
 587                         r4 += KERNELBASE;
 588                 if ((r5 & 0xf0000000) == 0)
 589                         r5 += KERNELBASE;
 590                 if ((r4 & 0xf0000000) == KERNELBASE) {
 591                         initrd_start = r4;
 592                         initrd_end = r5;
 593                         initrd_below_start_ok = 1;
 594                 }
 595         }
 596 #endif                          /* CONFIG_BLK_DEV_INITRD */
 597
 598         if (r6 && r7 && r7 > r6) {
 599                 if ((r6 & 0xf0000000) == 0)
 600                         r6 += KERNELBASE;
 601                 if ((r7 & 0xf0000000) == 0)
 602                         r7 += KERNELBASE;
 603                 if ((r6 & 0xf0000000) == KERNELBASE) {
 604                         cmdline_start = (void *)r6;
 605                         cmdline_len = (r7 - r6);
 606                         strncpy(cmd_line, cmdline_start, cmdline_len);
 607                 }
 608         }
 609 }
 610
 611 #if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
 612 static void
 613 hdpu_ide_request_region(ide_ioreg_t from, unsigned int extent, const char *name)
 614 {
 615         request_region(from, extent, name);
 616         return;
 617 }
 618
 619 static void hdpu_ide_release_region(ide_ioreg_t from, unsigned int extent)
 620 {
 621         release_region(from, extent);
 622         return;
 623 }
 624
 625 static void __init
 626 hdpu_ide_pci_init_hwif_ports(hw_regs_t * hw, ide_ioreg_t data_port,
 627                              ide_ioreg_t ctrl_port, int *irq)
 628 {
 629         struct pci_dev *dev;
 630
 631         pci_for_each_dev(dev) {
 632                 if (((dev->class >> 8) == PCI_CLASS_STORAGE_IDE) ||
 633                     ((dev->class >> 8) == PCI_CLASS_STORAGE_RAID)) {
 634                         hw->irq = dev->irq;
 635
 636                         if (irq != NULL) {
 637                                 *irq = dev->irq;
 638                         }
 639                 }
 640         }
 641
 642         return;
 643 }
 644 #endif
 645
 646 void hdpu_heartbeat(void)
 647 {
 648         if (mv64x60_read(&bh, MV64x60_GPP_VALUE) & (1 << 5))
 649                 mv64x60_write(&bh, MV64x60_GPP_VALUE_CLR, (1 << 5));
 650         else
 651                 mv64x60_write(&bh, MV64x60_GPP_VALUE_SET, (1 << 5));
 652
 653         ppc_md.heartbeat_count = ppc_md.heartbeat_reset;
 654
 655 }
 656
 657 static void __init hdpu_map_io(void)
 658 {
 659         io_block_mapping(0xf1000000, 0xf1000000, 0x20000, _PAGE_IO);
 660 }
 661
 662 #ifdef CONFIG_SMP
 663 char hdpu_smp0[] = "SMP Cpu #0";
 664 char hdpu_smp1[] = "SMP Cpu #1";
 665
 666 static irqreturn_t hdpu_smp_cpu0_int_handler(int irq, void *dev_id,
 667                                              struct pt_regs *regs)
 668 {
 669         volatile unsigned int doorbell;
 670
 671         doorbell = mv64x60_read(&bh, MV64360_CPU0_DOORBELL);
 672
 673         /* Ack the doorbell interrupts */
 674         mv64x60_write(&bh, MV64360_CPU0_DOORBELL_CLR, doorbell);
 675
 676         if (doorbell & 1) {
 677                 smp_message_recv(0, regs);
 678         }
 679         if (doorbell & 2) {
 680                 smp_message_recv(1, regs);
 681         }
 682         if (doorbell & 4) {
 683                 smp_message_recv(2, regs);
 684         }
 685         if (doorbell & 8) {
 686                 smp_message_recv(3, regs);
 687         }
 688         return IRQ_HANDLED;
 689 }
 690
 691 static irqreturn_t hdpu_smp_cpu1_int_handler(int irq, void *dev_id,
 692                                              struct pt_regs *regs)
 693 {
 694         volatile unsigned int doorbell;
 695
 696         doorbell = mv64x60_read(&bh, MV64360_CPU1_DOORBELL);
 697
 698         /* Ack the doorbell interrupts */
 699         mv64x60_write(&bh, MV64360_CPU1_DOORBELL_CLR, doorbell);
 700
 701         if (doorbell & 1) {
 702                 smp_message_recv(0, regs);
 703         }
 704         if (doorbell & 2) {
 705                 smp_message_recv(1, regs);
 706         }
 707         if (doorbell & 4) {
 708                 smp_message_recv(2, regs);
 709         }
 710         if (doorbell & 8) {
 711                 smp_message_recv(3, regs);
 712         }
 713         return IRQ_HANDLED;
 714 }
 715
 716 static void smp_hdpu_CPU_two(void)
 717 {
 718         __asm__ __volatile__
 719             ("\n"
 720              "lis     3,0x0000\n"
 721              "ori     3,3,0x00c0\n"
 722              "mtspr   26, 3\n" "li      4,0\n" "mtspr   27,4\n" "rfi");
 723
 724 }
 725
 726 static int smp_hdpu_probe(void)
 727 {
 728         int *cpu_count_reg;
 729         int num_cpus = 0;
 730
 731         cpu_count_reg = ioremap(HDPU_NEXUS_ID_BASE, HDPU_NEXUS_ID_SIZE);
 732         if (cpu_count_reg) {
 733                 num_cpus = (*cpu_count_reg >> 20) & 0x3;
 734                 iounmap(cpu_count_reg);
 735         }
 736
 737         /* Validate the bits in the CPLD. If we could not map the reg, return 2.
 738          * If the register reported 0 or 3, return 2.
 739          * Older CPLD revisions set these bits to all ones (val = 3).
 740          */
 741         if ((num_cpus < 1) || (num_cpus > 2)) {
 742                 printk
 743                     ("Unable to determine the number of processors %d . deafulting to 2.\n",
 744                      num_cpus);
 745                 num_cpus = 2;
 746         }
 747         return num_cpus;
 748 }
 749
 750 static void
 751 smp_hdpu_message_pass(int target, int msg)
 752 {
 753         if (msg > 0x3) {
 754                 printk("SMP %d: smp_message_pass: unknown msg %d\n",
 755                        smp_processor_id(), msg);
 756                 return;
 757         }
 758         switch (target) {
 759         case MSG_ALL:
 760                 mv64x60_write(&bh, MV64360_CPU0_DOORBELL, 1 << msg);
 761                 mv64x60_write(&bh, MV64360_CPU1_DOORBELL, 1 << msg);
 762                 break;
 763         case MSG_ALL_BUT_SELF:
 764                 if (smp_processor_id())
 765                         mv64x60_write(&bh, MV64360_CPU0_DOORBELL, 1 << msg);
 766                 else
 767                         mv64x60_write(&bh, MV64360_CPU1_DOORBELL, 1 << msg);
 768                 break;
 769         default:
 770                 if (target == 0)
 771                         mv64x60_write(&bh, MV64360_CPU0_DOORBELL, 1 << msg);
 772                 else
 773                         mv64x60_write(&bh, MV64360_CPU1_DOORBELL, 1 << msg);
 774                 break;
 775         }
 776 }
 777
 778 static void smp_hdpu_kick_cpu(int nr)
 779 {
 780         volatile unsigned int *bootaddr;
 781
 782         if (ppc_md.progress)
 783                 ppc_md.progress("smp_hdpu_kick_cpu", 0);
 784
 785         hdpu_cpustate_set(CPUSTATE_KERNEL_MAJOR | CPUSTATE_KERNEL_CPU1_KICK);
 786
 787        /* Disable BootCS. Must also reduce the windows size to zero. */
 788         bh.ci->disable_window_32bit(&bh, MV64x60_CPU2BOOT_WIN);
 789         mv64x60_set_32bit_window(&bh, MV64x60_CPU2BOOT_WIN, 0, 0, 0);
 790
 791         bootaddr = ioremap(HDPU_INTERNAL_SRAM_BASE, HDPU_INTERNAL_SRAM_SIZE);
 792         if (!bootaddr) {
 793                 if (ppc_md.progress)
 794                         ppc_md.progress("smp_hdpu_kick_cpu: ioremap failed", 0);
 795                 return;
 796         }
 797
 798         memcpy((void *)(bootaddr + 0x40), (void *)&smp_hdpu_CPU_two, 0x20);
 799
 800         /* map SRAM to 0xfff00000 */
 801         bh.ci->disable_window_32bit(&bh, MV64x60_CPU2SRAM_WIN);
 802
 803         mv64x60_set_32bit_window(&bh, MV64x60_CPU2SRAM_WIN,
 804                                  0xfff00000, HDPU_INTERNAL_SRAM_SIZE, 0);
 805         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2SRAM_WIN);
 806
 807         /* Enable CPU1 arbitration */
 808         mv64x60_clr_bits(&bh, MV64x60_CPU_MASTER_CNTL, (1 << 9));
 809
 810         /*
 811          * Wait 100mSecond until other CPU has reached __secondary_start.
 812          * When it reaches, it is permittable to rever the SRAM mapping etc...
 813          */
 814         mdelay(100);
 815         *(unsigned long *)KERNELBASE = nr;
 816         asm volatile ("dcbf 0,%0"::"r" (KERNELBASE):"memory");
 817
 818         iounmap(bootaddr);
 819
 820         /* Set up window for internal sram (256KByte insize) */
 821         bh.ci->disable_window_32bit(&bh, MV64x60_CPU2SRAM_WIN);
 822         mv64x60_set_32bit_window(&bh, MV64x60_CPU2SRAM_WIN,
 823                                  HDPU_INTERNAL_SRAM_BASE,
 824                                  HDPU_INTERNAL_SRAM_SIZE, 0);
 825         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2SRAM_WIN);
 826         /*
 827          * Set up windows for embedded FLASH (using boot CS window).
 828          */
 829
 830         bh.ci->disable_window_32bit(&bh, MV64x60_CPU2BOOT_WIN);
 831         mv64x60_set_32bit_window(&bh, MV64x60_CPU2BOOT_WIN,
 832                                  HDPU_EMB_FLASH_BASE, HDPU_EMB_FLASH_SIZE, 0);
 833         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2BOOT_WIN);
 834 }
 835
 836 static void smp_hdpu_setup_cpu(int cpu_nr)
 837 {
 838         if (cpu_nr == 0) {
 839                 if (ppc_md.progress)
 840                         ppc_md.progress("smp_hdpu_setup_cpu 0", 0);
 841                 mv64x60_write(&bh, MV64360_CPU0_DOORBELL_CLR, 0xff);
 842                 mv64x60_write(&bh, MV64360_CPU0_DOORBELL_MASK, 0xff);
 843                 request_irq(60, hdpu_smp_cpu0_int_handler,
 844                             SA_INTERRUPT, hdpu_smp0, 0);
 845         }
 846
 847         if (cpu_nr == 1) {
 848                 if (ppc_md.progress)
 849                         ppc_md.progress("smp_hdpu_setup_cpu 1", 0);
 850
 851                 hdpu_cpustate_set(CPUSTATE_KERNEL_MAJOR |
 852                                   CPUSTATE_KERNEL_CPU1_OK);
 853
 854                 /* Enable L1 Parity Bits */
 855                 hdpu_set_l1pe();
 856
 857                 /* Enable L2 cache */
 858                 _set_L2CR(0);
 859                 _set_L2CR(0x80080000);
 860
 861                 mv64x60_write(&bh, MV64360_CPU1_DOORBELL_CLR, 0x0);
 862                 mv64x60_write(&bh, MV64360_CPU1_DOORBELL_MASK, 0xff);
 863                 request_irq(28, hdpu_smp_cpu1_int_handler,
 864                             SA_INTERRUPT, hdpu_smp1, 0);
 865         }
 866
 867 }
 868
 869 void __devinit hdpu_tben_give()
 870 {
 871         volatile unsigned long *val = 0;
 872
 873         /* By writing 0 to the TBEN_BASE, the timebases is frozen */
 874         val = ioremap(HDPU_TBEN_BASE, 4);
 875         *val = 0;
 876         mb();
 877
 878         spin_lock(&timebase_lock);
 879         timebase_upper = get_tbu();
 880         timebase_lower = get_tbl();
 881         spin_unlock(&timebase_lock);
 882
 883         while (timebase_upper || timebase_lower)
 884                 barrier();
 885
 886         /* By writing 1 to the TBEN_BASE, the timebases is thawed */
 887         *val = 1;
 888         mb();
 889
 890         iounmap(val);
 891
 892 }
 893
 894 void __devinit hdpu_tben_take()
 895 {
 896         while (!(timebase_upper || timebase_lower))
 897                 barrier();
 898
 899         spin_lock(&timebase_lock);
 900         set_tb(timebase_upper, timebase_lower);
 901         timebase_upper = 0;
 902         timebase_lower = 0;
 903         spin_unlock(&timebase_lock);
 904 }
 905
 906 static struct smp_ops_t hdpu_smp_ops = {
 907         .message_pass = smp_hdpu_message_pass,
 908         .probe = smp_hdpu_probe,
 909         .kick_cpu = smp_hdpu_kick_cpu,
 910         .setup_cpu = smp_hdpu_setup_cpu,
 911         .give_timebase = hdpu_tben_give,
 912         .take_timebase = hdpu_tben_take,
 913 };
 914 #endif                          /* CONFIG_SMP */
 915
 916 void __init
 917 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 918               unsigned long r6, unsigned long r7)
 919 {
 920         parse_bootinfo(r3, r4, r5, r6, r7);
 921
 922         isa_mem_base = 0;
 923
 924         ppc_md.setup_arch = hdpu_setup_arch;
 925         ppc_md.init = hdpu_init2;
 926         ppc_md.show_cpuinfo = hdpu_show_cpuinfo;
 927         ppc_md.init_IRQ = hdpu_init_irq;
 928         ppc_md.get_irq = mv64360_get_irq;
 929         ppc_md.restart = hdpu_restart;
 930         ppc_md.power_off = hdpu_power_off;
 931         ppc_md.halt = hdpu_halt;
 932         ppc_md.find_end_of_memory = hdpu_find_end_of_memory;
 933         ppc_md.calibrate_decr = hdpu_calibrate_decr;
 934         ppc_md.setup_io_mappings = hdpu_map_io;
 935
 936         bh.p_base = CONFIG_MV64X60_NEW_BASE;
 937         bh.v_base = (unsigned long *)bh.p_base;
 938
 939         hdpu_set_bat();
 940
 941 #if defined(CONFIG_SERIAL_TEXT_DEBUG)
 942         ppc_md.progress = hdpu_mpsc_progress;   /* embedded UART */
 943         mv64x60_progress_init(bh.p_base);
 944 #endif                          /* CONFIG_SERIAL_TEXT_DEBUG */
 945
 946 #ifdef CONFIG_SMP
 947         smp_ops = &hdpu_smp_ops;
 948 #endif                          /* CONFIG_SMP */
 949
 950 #if defined(CONFIG_SERIAL_MPSC) || defined(CONFIG_MV643XX_ETH)
 951         platform_notify = hdpu_platform_notify;
 952 #endif
 953         return;
 954 }
 955
 956 #if defined(CONFIG_SERIAL_TEXT_DEBUG) && defined(CONFIG_SERIAL_MPSC_CONSOLE)
 957 /* SMP safe version of the serial text debug routine. Uses Semaphore 0 */
 958 void hdpu_mpsc_progress(char *s, unsigned short hex)
 959 {
 960         while (mv64x60_read(&bh, MV64360_WHO_AM_I) !=
 961                mv64x60_read(&bh, MV64360_SEMAPHORE_0)) {
 962         }
 963         mv64x60_mpsc_progress(s, hex);
 964         mv64x60_write(&bh, MV64360_SEMAPHORE_0, 0xff);
 965 }
 966 #endif
 967
 968 static void hdpu_cpustate_set(unsigned char new_state)
 969 {
 970         unsigned int state = (new_state << 21);
 971         mv64x60_write(&bh, MV64x60_GPP_VALUE_CLR, (0xff << 21));
 972         mv64x60_write(&bh, MV64x60_GPP_VALUE_CLR, state);
 973 }
 974
 975 #ifdef CONFIG_MTD_PHYSMAP
 976 static struct mtd_partition hdpu_partitions[] = {
 977         {
 978          .name = "Root FS",
 979          .size = 0x03400000,
 980          .offset = 0,
 981          .mask_flags = 0,
 982          },{
 983          .name = "User FS",
 984          .size = 0x00800000,
 985          .offset = 0x03400000,
 986          .mask_flags = 0,
 987          },{
 988          .name = "Kernel Image",
 989          .size = 0x002C0000,
 990          .offset = 0x03C00000,
 991          .mask_flags = 0,
 992          },{
 993          .name = "bootEnv",
 994          .size = 0x00040000,
 995          .offset = 0x03EC0000,
 996          .mask_flags = 0,
 997          },{
 998          .name = "bootROM",
 999          .size = 0x00100000,
1000          .offset = 0x03F00000,
1001          .mask_flags = 0,
1002          }
1003 };
1004
1005 static int __init hdpu_setup_mtd(void)
1006 {
1007
1008         physmap_set_partitions(hdpu_partitions, 5);
1009         return 0;
1010 }
1011
1012 arch_initcall(hdpu_setup_mtd);
1013 #endif
1014
1015 #ifdef CONFIG_HDPU_FEATURES
1016
1017 static struct resource hdpu_cpustate_resources[] = {
1018         [0] = {
1019                .name = "addr base",
1020                .start = MV64x60_GPP_VALUE_SET,
1021                .end = MV64x60_GPP_VALUE_CLR + 1,
1022                .flags = IORESOURCE_MEM,
1023                },
1024 };
1025
1026 static struct resource hdpu_nexus_resources[] = {
1027         [0] = {
1028                .name = "nexus register",
1029                .start = HDPU_NEXUS_ID_BASE,
1030                .end = HDPU_NEXUS_ID_BASE + HDPU_NEXUS_ID_SIZE,
1031                .flags = IORESOURCE_MEM,
1032                },
1033 };
1034
1035 static struct platform_device hdpu_cpustate_device = {
1036         .name = HDPU_CPUSTATE_NAME,
1037         .id = 0,
1038         .num_resources = ARRAY_SIZE(hdpu_cpustate_resources),
1039         .resource = hdpu_cpustate_resources,
1040 };
1041
1042 static struct platform_device hdpu_nexus_device = {
1043         .name = HDPU_NEXUS_NAME,
1044         .id = 0,
1045         .num_resources = ARRAY_SIZE(hdpu_nexus_resources),
1046         .resource = hdpu_nexus_resources,
1047 };
1048
1049 static int __init hdpu_add_pds(void)
1050 {
1051         platform_device_register(&hdpu_cpustate_device);
1052         platform_device_register(&hdpu_nexus_device);
1053         return 0;
1054 }
1055
1056 arch_initcall(hdpu_add_pds);
1057 #endif