arch/ppc/platforms/cpci690.c

   1 /*
   2  * arch/ppc/platforms/cpci690.c
   3  *
   4  * Board setup routines for the Force CPCI690 board.
   5  *
   6  * Author: Mark A. Greer <mgreer@mvista.com>
   7  *
   8  * 2003 (c) MontaVista Software, Inc.  This file is licensed under
   9  * the terms of the GNU General Public License version 2.  This programr
  10  * is licensed "as is" without any warranty of any kind, whether express
  11  * or implied.
  12  */
  13 #include <linux/config.h>
  14 #include <linux/delay.h>
  15 #include <linux/pci.h>
  16 #include <linux/ide.h>
  17 #include <linux/irq.h>
  18 #include <linux/fs.h>
  19 #include <linux/seq_file.h>
  20 #include <linux/console.h>
  21 #include <linux/initrd.h>
  22 #include <linux/root_dev.h>
  23 #include <linux/mv643xx.h>
  24 #include <asm/bootinfo.h>
  25 #include <asm/machdep.h>
  26 #include <asm/todc.h>
  27 #include <asm/time.h>
  28 #include <asm/mv64x60.h>
  29 #include <platforms/cpci690.h>
  30
  31 #define BOARD_VENDOR    "Force"
  32 #define BOARD_MACHINE   "CPCI690"
  33
  34 /* Set IDE controllers into Native mode? */
  35 #define SET_PCI_IDE_NATIVE
  36
  37 static struct mv64x60_handle    bh;
  38 static u32 cpci690_br_base;
  39
  40 static const unsigned int cpu_7xx[16] = { /* 7xx & 74xx (but not 745x) */
  41         18, 15, 14, 2, 4, 13, 5, 9, 6, 11, 8, 10, 16, 12, 7, 0
  42 };
  43
  44 TODC_ALLOC();
  45
  46 static int __init
  47 cpci690_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
  48 {
  49         struct pci_controller   *hose = pci_bus_to_hose(dev->bus->number);
  50
  51         if (hose->index == 0) {
  52                 static char pci_irq_table[][4] =
  53                 /*
  54                  *      PCI IDSEL/INTPIN->INTLINE
  55                  *         A   B   C   D
  56                  */
  57                 {
  58                         { 90, 91, 88, 89}, /* IDSEL 30/20 - Sentinel */
  59                 };
  60
  61                 const long min_idsel = 20, max_idsel = 20, irqs_per_slot = 4;
  62                 return PCI_IRQ_TABLE_LOOKUP;
  63         } else {
  64                 static char pci_irq_table[][4] =
  65                 /*
  66                  *      PCI IDSEL/INTPIN->INTLINE
  67                  *         A   B   C   D
  68                  */
  69                 {
  70                         { 93, 94, 95, 92}, /* IDSEL 28/18 - PMC slot 2 */
  71                         {  0,  0,  0,  0}, /* IDSEL 29/19 - Not used */
  72                         { 94, 95, 92, 93}, /* IDSEL 30/20 - PMC slot 1 */
  73                 };
  74
  75                 const long min_idsel = 18, max_idsel = 20, irqs_per_slot = 4;
  76                 return PCI_IRQ_TABLE_LOOKUP;
  77         }
  78 }
  79
  80 static int
  81 cpci690_get_cpu_speed(void)
  82 {
  83         unsigned long   hid1;
  84
  85         hid1 = mfspr(SPRN_HID1) >> 28;
  86         return CPCI690_BUS_FREQ * cpu_7xx[hid1]/2;
  87 }
  88
  89 #define KB      (1024UL)
  90 #define MB      (1024UL * KB)
  91 #define GB      (1024UL * MB)
  92
  93 unsigned long __init
  94 cpci690_find_end_of_memory(void)
  95 {
  96         u32             mem_ctlr_size;
  97         static u32      board_size;
  98         static u8       first_time = 1;
  99
 100         if (first_time) {
 101                 /* Using cpci690_set_bat() mapping ==> virt addr == phys addr */
 102                 switch (in_8((u8 *) (cpci690_br_base +
 103                         CPCI690_BR_MEM_CTLR)) & 0x07) {
 104                 case 0x01:
 105                         board_size = 256*MB;
 106                         break;
 107                 case 0x02:
 108                         board_size = 512*MB;
 109                         break;
 110                 case 0x03:
 111                         board_size = 768*MB;
 112                         break;
 113                 case 0x04:
 114                         board_size = 1*GB;
 115                         break;
 116                 case 0x05:
 117                         board_size = 1*GB + 512*MB;
 118                         break;
 119                 case 0x06:
 120                         board_size = 2*GB;
 121                         break;
 122                 default:
 123                         board_size = 0xffffffff; /* use mem ctlr size */
 124                 } /* switch */
 125
 126                 mem_ctlr_size =  mv64x60_get_mem_size(CONFIG_MV64X60_NEW_BASE,
 127                         MV64x60_TYPE_GT64260A);
 128
 129                 /* Check that mem ctlr & board reg agree.  If not, pick MIN. */
 130                 if (board_size != mem_ctlr_size) {
 131                         printk(KERN_WARNING "Board register & memory controller"
 132                                 "mem size disagree (board reg: 0x%lx, "
 133                                 "mem ctlr: 0x%lx)\n",
 134                                 (ulong)board_size, (ulong)mem_ctlr_size);
 135                         board_size = min(board_size, mem_ctlr_size);
 136                 }
 137
 138                 first_time = 0;
 139         } /* if */
 140
 141         return board_size;
 142 }
 143
 144 static void __init
 145 cpci690_setup_bridge(void)
 146 {
 147         struct mv64x60_setup_info       si;
 148         int                             i;
 149
 150         memset(&si, 0, sizeof(si));
 151
 152         si.phys_reg_base = CONFIG_MV64X60_NEW_BASE;
 153
 154         si.pci_0.enable_bus = 1;
 155         si.pci_0.pci_io.cpu_base = CPCI690_PCI0_IO_START_PROC_ADDR;
 156         si.pci_0.pci_io.pci_base_hi = 0;
 157         si.pci_0.pci_io.pci_base_lo = CPCI690_PCI0_IO_START_PCI_ADDR;
 158         si.pci_0.pci_io.size = CPCI690_PCI0_IO_SIZE;
 159         si.pci_0.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
 160         si.pci_0.pci_mem[0].cpu_base = CPCI690_PCI0_MEM_START_PROC_ADDR;
 161         si.pci_0.pci_mem[0].pci_base_hi = CPCI690_PCI0_MEM_START_PCI_HI_ADDR;
 162         si.pci_0.pci_mem[0].pci_base_lo = CPCI690_PCI0_MEM_START_PCI_LO_ADDR;
 163         si.pci_0.pci_mem[0].size = CPCI690_PCI0_MEM_SIZE;
 164         si.pci_0.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
 165         si.pci_0.pci_cmd_bits = 0;
 166         si.pci_0.latency_timer = 0x80;
 167
 168         si.pci_1.enable_bus = 1;
 169         si.pci_1.pci_io.cpu_base = CPCI690_PCI1_IO_START_PROC_ADDR;
 170         si.pci_1.pci_io.pci_base_hi = 0;
 171         si.pci_1.pci_io.pci_base_lo = CPCI690_PCI1_IO_START_PCI_ADDR;
 172         si.pci_1.pci_io.size = CPCI690_PCI1_IO_SIZE;
 173         si.pci_1.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
 174         si.pci_1.pci_mem[0].cpu_base = CPCI690_PCI1_MEM_START_PROC_ADDR;
 175         si.pci_1.pci_mem[0].pci_base_hi = CPCI690_PCI1_MEM_START_PCI_HI_ADDR;
 176         si.pci_1.pci_mem[0].pci_base_lo = CPCI690_PCI1_MEM_START_PCI_LO_ADDR;
 177         si.pci_1.pci_mem[0].size = CPCI690_PCI1_MEM_SIZE;
 178         si.pci_1.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
 179         si.pci_1.pci_cmd_bits = 0;
 180         si.pci_1.latency_timer = 0x80;
 181
 182         for (i=0; i<MV64x60_CPU2MEM_WINDOWS; i++) {
 183                 si.cpu_prot_options[i] = 0;
 184                 si.cpu_snoop_options[i] = GT64260_CPU_SNOOP_WB;
 185                 si.pci_0.acc_cntl_options[i] =
 186                         GT64260_PCI_ACC_CNTL_DREADEN |
 187                         GT64260_PCI_ACC_CNTL_RDPREFETCH |
 188                         GT64260_PCI_ACC_CNTL_RDLINEPREFETCH |
 189                         GT64260_PCI_ACC_CNTL_RDMULPREFETCH |
 190                         GT64260_PCI_ACC_CNTL_SWAP_NONE |
 191                         GT64260_PCI_ACC_CNTL_MBURST_32_BTYES;
 192                 si.pci_0.snoop_options[i] = GT64260_PCI_SNOOP_WB;
 193                 si.pci_1.acc_cntl_options[i] =
 194                         GT64260_PCI_ACC_CNTL_DREADEN |
 195                         GT64260_PCI_ACC_CNTL_RDPREFETCH |
 196                         GT64260_PCI_ACC_CNTL_RDLINEPREFETCH |
 197                         GT64260_PCI_ACC_CNTL_RDMULPREFETCH |
 198                         GT64260_PCI_ACC_CNTL_SWAP_NONE |
 199                         GT64260_PCI_ACC_CNTL_MBURST_32_BTYES;
 200                 si.pci_1.snoop_options[i] = GT64260_PCI_SNOOP_WB;
 201         }
 202
 203         /* Lookup PCI host bridges */
 204         if (mv64x60_init(&bh, &si))
 205                 printk(KERN_ERR "Bridge initialization failed.\n");
 206
 207         pci_dram_offset = 0; /* System mem at same addr on PCI & cpu bus */
 208         ppc_md.pci_swizzle = common_swizzle;
 209         ppc_md.pci_map_irq = cpci690_map_irq;
 210         ppc_md.pci_exclude_device = mv64x60_pci_exclude_device;
 211
 212         mv64x60_set_bus(&bh, 0, 0);
 213         bh.hose_a->first_busno = 0;
 214         bh.hose_a->last_busno = 0xff;
 215         bh.hose_a->last_busno = pciauto_bus_scan(bh.hose_a, 0);
 216
 217         bh.hose_b->first_busno = bh.hose_a->last_busno + 1;
 218         mv64x60_set_bus(&bh, 1, bh.hose_b->first_busno);
 219         bh.hose_b->last_busno = 0xff;
 220         bh.hose_b->last_busno = pciauto_bus_scan(bh.hose_b,
 221                 bh.hose_b->first_busno);
 222 }
 223
 224 static void __init
 225 cpci690_setup_peripherals(void)
 226 {
 227         /* Set up windows to CPLD, RTC/TODC, IPMI. */
 228         mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_0_WIN, CPCI690_BR_BASE,
 229                 CPCI690_BR_SIZE, 0);
 230         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_0_WIN);
 231         cpci690_br_base = (u32)ioremap(CPCI690_BR_BASE, CPCI690_BR_SIZE);
 232
 233         mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_1_WIN, CPCI690_TODC_BASE,
 234                 CPCI690_TODC_SIZE, 0);
 235         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_1_WIN);
 236         TODC_INIT(TODC_TYPE_MK48T35, 0, 0,
 237                         ioremap(CPCI690_TODC_BASE, CPCI690_TODC_SIZE), 8);
 238
 239         mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_2_WIN, CPCI690_IPMI_BASE,
 240                 CPCI690_IPMI_SIZE, 0);
 241         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_2_WIN);
 242
 243         mv64x60_set_bits(&bh, MV64x60_PCI0_ARBITER_CNTL, (1<<31));
 244         mv64x60_set_bits(&bh, MV64x60_PCI1_ARBITER_CNTL, (1<<31));
 245
 246         mv64x60_set_bits(&bh, MV64x60_CPU_MASTER_CNTL, (1<<9)); /* Only 1 cpu */
 247
 248         /*
 249          * Turn off timer/counters.  Not turning off watchdog timer because
 250          * can't read its reg on the 64260A so don't know if we'll be enabling
 251          * or disabling.
 252          */
 253         mv64x60_clr_bits(&bh, MV64x60_TIMR_CNTR_0_3_CNTL,
 254                         ((1<<0) | (1<<8) | (1<<16) | (1<<24)));
 255         mv64x60_clr_bits(&bh, GT64260_TIMR_CNTR_4_7_CNTL,
 256                         ((1<<0) | (1<<8) | (1<<16) | (1<<24)));
 257
 258         /*
 259          * Set MPSC Multiplex RMII
 260          * NOTE: ethernet driver modifies bit 0 and 1
 261          */
 262         mv64x60_write(&bh, GT64260_MPP_SERIAL_PORTS_MULTIPLEX, 0x00001102);
 263
 264 #define GPP_EXTERNAL_INTERRUPTS \
 265                 ((1<<24) | (1<<25) | (1<<26) | (1<<27) | \
 266                  (1<<28) | (1<<29) | (1<<30) | (1<<31))
 267         /* PCI interrupts are inputs */
 268         mv64x60_clr_bits(&bh, MV64x60_GPP_IO_CNTL, GPP_EXTERNAL_INTERRUPTS);
 269         /* PCI interrupts are active low */
 270         mv64x60_set_bits(&bh, MV64x60_GPP_LEVEL_CNTL, GPP_EXTERNAL_INTERRUPTS);
 271
 272         /* Clear any pending interrupts for these inputs and enable them. */
 273         mv64x60_write(&bh, MV64x60_GPP_INTR_CAUSE, ~GPP_EXTERNAL_INTERRUPTS);
 274         mv64x60_set_bits(&bh, MV64x60_GPP_INTR_MASK, GPP_EXTERNAL_INTERRUPTS);
 275
 276         /* Route MPP interrupt inputs to GPP */
 277         mv64x60_write(&bh, MV64x60_MPP_CNTL_2, 0x00000000);
 278         mv64x60_write(&bh, MV64x60_MPP_CNTL_3, 0x00000000);
 279 }
 280
 281 static void __init
 282 cpci690_setup_arch(void)
 283 {
 284         if (ppc_md.progress)
 285                 ppc_md.progress("cpci690_setup_arch: enter", 0);
 286 #ifdef CONFIG_BLK_DEV_INITRD
 287         if (initrd_start)
 288                 ROOT_DEV = Root_RAM0;
 289         else
 290 #endif
 291 #ifdef   CONFIG_ROOT_NFS
 292                 ROOT_DEV = Root_NFS;
 293 #else
 294                 ROOT_DEV = Root_SDA2;
 295 #endif
 296
 297         if (ppc_md.progress)
 298                 ppc_md.progress("cpci690_setup_arch: Enabling L2 cache", 0);
 299
 300         /* Enable L2 and L3 caches (if 745x) */
 301         _set_L2CR(_get_L2CR() | L2CR_L2E);
 302         _set_L3CR(_get_L3CR() | L3CR_L3E);
 303
 304         if (ppc_md.progress)
 305                 ppc_md.progress("cpci690_setup_arch: Initializing bridge", 0);
 306
 307         cpci690_setup_bridge();         /* set up PCI bridge(s) */
 308         cpci690_setup_peripherals();    /* set up chip selects/GPP/MPP etc */
 309
 310         if (ppc_md.progress)
 311                 ppc_md.progress("cpci690_setup_arch: bridge init complete", 0);
 312
 313         printk(KERN_INFO "%s %s port (C) 2003 MontaVista Software, Inc. "
 314                 "(source@mvista.com)\n", BOARD_VENDOR, BOARD_MACHINE);
 315
 316         if (ppc_md.progress)
 317                 ppc_md.progress("cpci690_setup_arch: exit", 0);
 318 }
 319
 320 /* Platform device data fixup routines. */
 321 #if defined(CONFIG_SERIAL_MPSC)
 322 static void __init
 323 cpci690_fixup_mpsc_pdata(struct platform_device *pdev)
 324 {
 325         struct mpsc_pdata *pdata;
 326
 327         pdata = (struct mpsc_pdata *)pdev->dev.platform_data;
 328
 329         pdata->max_idle = 40;
 330         pdata->default_baud = CPCI690_MPSC_BAUD;
 331         pdata->brg_clk_src = CPCI690_MPSC_CLK_SRC;
 332         pdata->brg_clk_freq = CPCI690_BUS_FREQ;
 333 }
 334
 335 static int __init
 336 cpci690_platform_notify(struct device *dev)
 337 {
 338         static struct {
 339                 char    *bus_id;
 340                 void    ((*rtn)(struct platform_device *pdev));
 341         } dev_map[] = {
 342                 { MPSC_CTLR_NAME ".0", cpci690_fixup_mpsc_pdata },
 343                 { MPSC_CTLR_NAME ".1", cpci690_fixup_mpsc_pdata },
 344         };
 345         struct platform_device  *pdev;
 346         int     i;
 347
 348         if (dev && dev->bus_id)
 349                 for (i=0; i<ARRAY_SIZE(dev_map); i++)
 350                         if (!strncmp(dev->bus_id, dev_map[i].bus_id,
 351                                 BUS_ID_SIZE)) {
 352
 353                                 pdev = container_of(dev,
 354                                         struct platform_device, dev);
 355                                 dev_map[i].rtn(pdev);
 356                         }
 357
 358         return 0;
 359 }
 360 #endif
 361
 362 static void
 363 cpci690_reset_board(void)
 364 {
 365         u32     i = 10000;
 366
 367         local_irq_disable();
 368         out_8((u8 *)(cpci690_br_base + CPCI690_BR_SW_RESET), 0x11);
 369
 370         while (i != 0) i++;
 371         panic("restart failed\n");
 372 }
 373
 374 static void
 375 cpci690_restart(char *cmd)
 376 {
 377         cpci690_reset_board();
 378 }
 379
 380 static void
 381 cpci690_halt(void)
 382 {
 383         while (1);
 384         /* NOTREACHED */
 385 }
 386
 387 static void
 388 cpci690_power_off(void)
 389 {
 390         cpci690_halt();
 391         /* NOTREACHED */
 392 }
 393
 394 static int
 395 cpci690_show_cpuinfo(struct seq_file *m)
 396 {
 397         seq_printf(m, "vendor\t\t: " BOARD_VENDOR "\n");
 398         seq_printf(m, "machine\t\t: " BOARD_MACHINE "\n");
 399         seq_printf(m, "cpu MHz\t\t: %d\n", cpci690_get_cpu_speed()/1000/1000);
 400         seq_printf(m, "bus MHz\t\t: %d\n", CPCI690_BUS_FREQ/1000/1000);
 401
 402         return 0;
 403 }
 404
 405 static void __init
 406 cpci690_calibrate_decr(void)
 407 {
 408         ulong freq;
 409
 410         freq = CPCI690_BUS_FREQ / 4;
 411
 412         printk(KERN_INFO "time_init: decrementer frequency = %lu.%.6lu MHz\n",
 413                freq/1000000, freq%1000000);
 414
 415         tb_ticks_per_jiffy = freq / HZ;
 416         tb_to_us = mulhwu_scale_factor(freq, 1000000);
 417 }
 418
 419 static __inline__ void
 420 cpci690_set_bat(u32 addr, u32 size)
 421 {
 422         addr &= 0xfffe0000;
 423         size &= 0x1ffe0000;
 424         size = ((size >> 17) - 1) << 2;
 425
 426         mb();
 427         mtspr(SPRN_DBAT1U, addr | size | 0x2); /* Vs == 1; Vp == 0 */
 428         mtspr(SPRN_DBAT1L, addr | 0x2a); /* WIMG bits == 0101; PP == r/w access */
 429         mb();
 430 }
 431
 432 #if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
 433 static void __init
 434 cpci690_map_io(void)
 435 {
 436         io_block_mapping(CONFIG_MV64X60_NEW_BASE, CONFIG_MV64X60_NEW_BASE,
 437                 128 * KB, _PAGE_IO);
 438 }
 439 #endif
 440
 441 void __init
 442 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 443               unsigned long r6, unsigned long r7)
 444 {
 445 #ifdef CONFIG_BLK_DEV_INITRD
 446         initrd_start=initrd_end=0;
 447         initrd_below_start_ok=0;
 448 #endif /* CONFIG_BLK_DEV_INITRD */
 449
 450         parse_bootinfo(find_bootinfo());
 451
 452         loops_per_jiffy = cpci690_get_cpu_speed() / HZ;
 453
 454         isa_mem_base = 0;
 455
 456         ppc_md.setup_arch = cpci690_setup_arch;
 457         ppc_md.show_cpuinfo = cpci690_show_cpuinfo;
 458         ppc_md.init_IRQ = gt64260_init_irq;
 459         ppc_md.get_irq = gt64260_get_irq;
 460         ppc_md.restart = cpci690_restart;
 461         ppc_md.power_off = cpci690_power_off;
 462         ppc_md.halt = cpci690_halt;
 463         ppc_md.find_end_of_memory = cpci690_find_end_of_memory;
 464         ppc_md.time_init = todc_time_init;
 465         ppc_md.set_rtc_time = todc_set_rtc_time;
 466         ppc_md.get_rtc_time = todc_get_rtc_time;
 467         ppc_md.nvram_read_val = todc_direct_read_val;
 468         ppc_md.nvram_write_val = todc_direct_write_val;
 469         ppc_md.calibrate_decr = cpci690_calibrate_decr;
 470
 471         /*
 472          * Need to map in board regs (used by cpci690_find_end_of_memory())
 473          * and the bridge's regs (used by progress);
 474          */
 475         cpci690_set_bat(CPCI690_BR_BASE, 32 * MB);
 476         cpci690_br_base = CPCI690_BR_BASE;
 477
 478 #ifdef  CONFIG_SERIAL_TEXT_DEBUG
 479         ppc_md.setup_io_mappings = cpci690_map_io;
 480         ppc_md.progress = mv64x60_mpsc_progress;
 481         mv64x60_progress_init(CONFIG_MV64X60_NEW_BASE);
 482 #endif  /* CONFIG_SERIAL_TEXT_DEBUG */
 483 #ifdef  CONFIG_KGDB
 484         ppc_md.setup_io_mappings = cpci690_map_io;
 485         ppc_md.early_serial_map = cpci690_early_serial_map;
 486 #endif  /* CONFIG_KGDB */
 487
 488 #if defined(CONFIG_SERIAL_MPSC)
 489         platform_notify = cpci690_platform_notify;
 490 #endif
 491 }