release/src-rt-6.x/linux/linux-2.6/arch/ppc/platforms/ev64360.c

   1 /*
   2  * Board setup routines for the Marvell EV-64360-BP Evaluation Board.
   3  *
   4  * Author: Lee Nicks <allinux@gmail.com>
   5  *
   6  * Based on code done by Rabeeh Khoury - rabeeh@galileo.co.il
   7  * Based on code done by - Mark A. Greer <mgreer@mvista.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify it
  10  * under the terms of the GNU General Public License as published by the
  11  * Free Software Foundation; either version 2 of the License, or (at your
  12  * option) any later version.
  13  */
  14 #include <linux/kernel.h>
  15 #include <linux/pci.h>
  16 #include <linux/kdev_t.h>
  17 #include <linux/console.h>
  18 #include <linux/initrd.h>
  19 #include <linux/root_dev.h>
  20 #include <linux/delay.h>
  21 #include <linux/seq_file.h>
  22 #include <linux/bootmem.h>
  23 #include <linux/mtd/physmap.h>
  24 #include <linux/mv643xx.h>
  25 #include <linux/platform_device.h>
  26 #ifdef CONFIG_BOOTIMG
  27 #include <linux/bootimg.h>
  28 #endif
  29 #include <asm/page.h>
  30 #include <asm/time.h>
  31 #include <asm/smp.h>
  32 #include <asm/todc.h>
  33 #include <asm/bootinfo.h>
  34 #include <asm/ppcboot.h>
  35 #include <asm/mv64x60.h>
  36 #include <asm/machdep.h>
  37 #include <platforms/ev64360.h>
  38
  39 #define BOARD_VENDOR    "Marvell"
  40 #define BOARD_MACHINE   "EV-64360-BP"
  41
  42 static struct           mv64x60_handle bh;
  43 static void __iomem     *sram_base;
  44
  45 static u32              ev64360_flash_size_0;
  46 static u32              ev64360_flash_size_1;
  47
  48 static u32              ev64360_bus_frequency;
  49
  50 unsigned char   __res[sizeof(bd_t)];
  51
  52 TODC_ALLOC();
  53
  54 static int __init
  55 ev64360_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
  56 {
  57         return 0;
  58 }
  59
  60 static void __init
  61 ev64360_setup_bridge(void)
  62 {
  63         struct mv64x60_setup_info si;
  64         int i;
  65
  66         memset(&si, 0, sizeof(si));
  67
  68         si.phys_reg_base = CONFIG_MV64X60_NEW_BASE;
  69
  70         #ifdef CONFIG_PCI
  71         si.pci_1.enable_bus = 1;
  72         si.pci_1.pci_io.cpu_base = EV64360_PCI1_IO_START_PROC_ADDR;
  73         si.pci_1.pci_io.pci_base_hi = 0;
  74         si.pci_1.pci_io.pci_base_lo = EV64360_PCI1_IO_START_PCI_ADDR;
  75         si.pci_1.pci_io.size = EV64360_PCI1_IO_SIZE;
  76         si.pci_1.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
  77         si.pci_1.pci_mem[0].cpu_base = EV64360_PCI1_MEM_START_PROC_ADDR;
  78         si.pci_1.pci_mem[0].pci_base_hi = EV64360_PCI1_MEM_START_PCI_HI_ADDR;
  79         si.pci_1.pci_mem[0].pci_base_lo = EV64360_PCI1_MEM_START_PCI_LO_ADDR;
  80         si.pci_1.pci_mem[0].size = EV64360_PCI1_MEM_SIZE;
  81         si.pci_1.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
  82         si.pci_1.pci_cmd_bits = 0;
  83         si.pci_1.latency_timer = 0x80;
  84         #else
  85         si.pci_0.enable_bus = 0;
  86         si.pci_1.enable_bus = 0;
  87         #endif
  88
  89         for (i = 0; i < MV64x60_CPU2MEM_WINDOWS; i++) {
  90 #if defined(CONFIG_NOT_COHERENT_CACHE)
  91                 si.cpu_prot_options[i] = 0;
  92                 si.enet_options[i] = MV64360_ENET2MEM_SNOOP_NONE;
  93                 si.mpsc_options[i] = MV64360_MPSC2MEM_SNOOP_NONE;
  94                 si.idma_options[i] = MV64360_IDMA2MEM_SNOOP_NONE;
  95
  96                 si.pci_1.acc_cntl_options[i] =
  97                     MV64360_PCI_ACC_CNTL_SNOOP_NONE |
  98                     MV64360_PCI_ACC_CNTL_SWAP_NONE |
  99                     MV64360_PCI_ACC_CNTL_MBURST_128_BYTES |
 100                     MV64360_PCI_ACC_CNTL_RDSIZE_256_BYTES;
 101 #else
 102                 si.cpu_prot_options[i] = 0;
 103                 si.enet_options[i] = MV64360_ENET2MEM_SNOOP_NONE; /* errata */
 104                 si.mpsc_options[i] = MV64360_MPSC2MEM_SNOOP_NONE; /* errata */
 105                 si.idma_options[i] = MV64360_IDMA2MEM_SNOOP_NONE; /* errata */
 106
 107                 si.pci_1.acc_cntl_options[i] =
 108                     MV64360_PCI_ACC_CNTL_SNOOP_WB |
 109                     MV64360_PCI_ACC_CNTL_SWAP_NONE |
 110                     MV64360_PCI_ACC_CNTL_MBURST_32_BYTES |
 111                     MV64360_PCI_ACC_CNTL_RDSIZE_32_BYTES;
 112 #endif
 113         }
 114
 115         if (mv64x60_init(&bh, &si))
 116                 printk(KERN_WARNING "Bridge initialization failed.\n");
 117
 118         #ifdef CONFIG_PCI
 119         pci_dram_offset = 0; /* sys mem at same addr on PCI & cpu bus */
 120         ppc_md.pci_swizzle = common_swizzle;
 121         ppc_md.pci_map_irq = ev64360_map_irq;
 122         ppc_md.pci_exclude_device = mv64x60_pci_exclude_device;
 123
 124         mv64x60_set_bus(&bh, 1, 0);
 125         bh.hose_b->first_busno = 0;
 126         bh.hose_b->last_busno = 0xff;
 127         #endif
 128 }
 129
 130 /* Bridge & platform setup routines */
 131 void __init
 132 ev64360_intr_setup(void)
 133 {
 134         /* MPP 8, 9, and 10 */
 135         mv64x60_clr_bits(&bh, MV64x60_MPP_CNTL_1, 0xfff);
 136
 137         /*
 138          * Define GPP 8,9,and 10 interrupt polarity as active low
 139          * input signal and level triggered
 140          */
 141         mv64x60_set_bits(&bh, MV64x60_GPP_LEVEL_CNTL, 0x700);
 142         mv64x60_clr_bits(&bh, MV64x60_GPP_IO_CNTL, 0x700);
 143
 144         /* Config GPP intr ctlr to respond to level trigger */
 145         mv64x60_set_bits(&bh, MV64x60_COMM_ARBITER_CNTL, (1<<10));
 146
 147         /* Erranum FEr PCI-#8 */
 148         mv64x60_clr_bits(&bh, MV64x60_PCI0_CMD, (1<<5) | (1<<9));
 149         mv64x60_clr_bits(&bh, MV64x60_PCI1_CMD, (1<<5) | (1<<9));
 150
 151         /*
 152          * Dismiss and then enable interrupt on GPP interrupt cause
 153          * for CPU #0
 154          */
 155         mv64x60_write(&bh, MV64x60_GPP_INTR_CAUSE, ~0x700);
 156         mv64x60_set_bits(&bh, MV64x60_GPP_INTR_MASK, 0x700);
 157
 158         /*
 159          * Dismiss and then enable interrupt on CPU #0 high cause reg
 160          * BIT25 summarizes GPP interrupts 8-15
 161          */
 162         mv64x60_set_bits(&bh, MV64360_IC_CPU0_INTR_MASK_HI, (1<<25));
 163 }
 164
 165 void __init
 166 ev64360_setup_peripherals(void)
 167 {
 168         u32 base;
 169
 170         /* Set up window for boot CS */
 171         mv64x60_set_32bit_window(&bh, MV64x60_CPU2BOOT_WIN,
 172                  EV64360_BOOT_WINDOW_BASE, EV64360_BOOT_WINDOW_SIZE, 0);
 173         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2BOOT_WIN);
 174
 175         /* We only use the 32-bit flash */
 176         mv64x60_get_32bit_window(&bh, MV64x60_CPU2BOOT_WIN, &base,
 177                 &ev64360_flash_size_0);
 178         ev64360_flash_size_1 = 0;
 179
 180         mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_1_WIN,
 181                  EV64360_RTC_WINDOW_BASE, EV64360_RTC_WINDOW_SIZE, 0);
 182         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_1_WIN);
 183
 184         TODC_INIT(TODC_TYPE_DS1501, 0, 0,
 185                 ioremap(EV64360_RTC_WINDOW_BASE, EV64360_RTC_WINDOW_SIZE), 8);
 186
 187         mv64x60_set_32bit_window(&bh, MV64x60_CPU2SRAM_WIN,
 188                  EV64360_INTERNAL_SRAM_BASE, MV64360_SRAM_SIZE, 0);
 189         bh.ci->enable_window_32bit(&bh, MV64x60_CPU2SRAM_WIN);
 190         sram_base = ioremap(EV64360_INTERNAL_SRAM_BASE, MV64360_SRAM_SIZE);
 191
 192         /* Set up Enet->SRAM window */
 193         mv64x60_set_32bit_window(&bh, MV64x60_ENET2MEM_4_WIN,
 194                 EV64360_INTERNAL_SRAM_BASE, MV64360_SRAM_SIZE, 0x2);
 195         bh.ci->enable_window_32bit(&bh, MV64x60_ENET2MEM_4_WIN);
 196
 197         /* Give enet r/w access to memory region */
 198         mv64x60_set_bits(&bh, MV64360_ENET2MEM_ACC_PROT_0, (0x3 << (4 << 1)));
 199         mv64x60_set_bits(&bh, MV64360_ENET2MEM_ACC_PROT_1, (0x3 << (4 << 1)));
 200         mv64x60_set_bits(&bh, MV64360_ENET2MEM_ACC_PROT_2, (0x3 << (4 << 1)));
 201
 202         mv64x60_clr_bits(&bh, MV64x60_PCI1_PCI_DECODE_CNTL, (1 << 3));
 203         mv64x60_clr_bits(&bh, MV64x60_TIMR_CNTR_0_3_CNTL,
 204                          ((1 << 0) | (1 << 8) | (1 << 16) | (1 << 24)));
 205
 206 #if defined(CONFIG_NOT_COHERENT_CACHE)
 207         mv64x60_write(&bh, MV64360_SRAM_CONFIG, 0x00160000);
 208 #else
 209         mv64x60_write(&bh, MV64360_SRAM_CONFIG, 0x001600b2);
 210 #endif
 211
 212         /*
 213          * Setting the SRAM to 0. Note that this generates parity errors on
 214          * internal data path in SRAM since it's first time accessing it
 215          * while after reset it's not configured.
 216          */
 217         memset(sram_base, 0, MV64360_SRAM_SIZE);
 218
 219         /* set up PCI interrupt controller */
 220         ev64360_intr_setup();
 221 }
 222
 223 static void __init
 224 ev64360_setup_arch(void)
 225 {
 226         if (ppc_md.progress)
 227                 ppc_md.progress("ev64360_setup_arch: enter", 0);
 228
 229         set_tb(0, 0);
 230
 231 #ifdef CONFIG_BLK_DEV_INITRD
 232         if (initrd_start)
 233                 ROOT_DEV = Root_RAM0;
 234         else
 235 #endif
 236 #ifdef   CONFIG_ROOT_NFS
 237                 ROOT_DEV = Root_NFS;
 238 #else
 239                 ROOT_DEV = Root_SDA2;
 240 #endif
 241
 242         /*
 243          * Set up the L2CR register.
 244          */
 245         _set_L2CR(L2CR_L2E | L2CR_L2PE);
 246
 247         if (ppc_md.progress)
 248                 ppc_md.progress("ev64360_setup_arch: calling setup_bridge", 0);
 249
 250         ev64360_setup_bridge();
 251         ev64360_setup_peripherals();
 252         ev64360_bus_frequency = ev64360_bus_freq();
 253
 254         printk(KERN_INFO "%s %s port (C) 2005 Lee Nicks "
 255                 "(allinux@gmail.com)\n", BOARD_VENDOR, BOARD_MACHINE);
 256         if (ppc_md.progress)
 257                 ppc_md.progress("ev64360_setup_arch: exit", 0);
 258 }
 259
 260 /* Platform device data fixup routines. */
 261 #if defined(CONFIG_SERIAL_MPSC)
 262 static void __init
 263 ev64360_fixup_mpsc_pdata(struct platform_device *pdev)
 264 {
 265         struct mpsc_pdata *pdata;
 266
 267         pdata = (struct mpsc_pdata *)pdev->dev.platform_data;
 268
 269         pdata->max_idle = 40;
 270         pdata->default_baud = EV64360_DEFAULT_BAUD;
 271         pdata->brg_clk_src = EV64360_MPSC_CLK_SRC;
 272         /*
 273          * TCLK (not SysCLk) is routed to BRG, then to the MPSC.  On most parts,
 274          * TCLK == SysCLK but on 64460, they are separate pins.
 275          * SysCLK can go up to 200 MHz but TCLK can only go up to 133 MHz.
 276          */
 277         pdata->brg_clk_freq = min(ev64360_bus_frequency, MV64x60_TCLK_FREQ_MAX);
 278 }
 279 #endif
 280
 281 #if defined(CONFIG_MV643XX_ETH)
 282 static void __init
 283 ev64360_fixup_eth_pdata(struct platform_device *pdev)
 284 {
 285         struct mv643xx_eth_platform_data *eth_pd;
 286         static u16 phy_addr[] = {
 287                 EV64360_ETH0_PHY_ADDR,
 288                 EV64360_ETH1_PHY_ADDR,
 289                 EV64360_ETH2_PHY_ADDR,
 290         };
 291
 292         eth_pd = pdev->dev.platform_data;
 293         eth_pd->force_phy_addr = 1;
 294         eth_pd->phy_addr = phy_addr[pdev->id];
 295         eth_pd->tx_queue_size = EV64360_ETH_TX_QUEUE_SIZE;
 296         eth_pd->rx_queue_size = EV64360_ETH_RX_QUEUE_SIZE;
 297 }
 298 #endif
 299
 300 static int
 301 ev64360_platform_notify(struct device *dev)
 302 {
 303         static struct {
 304                 char    *bus_id;
 305                 void    ((*rtn)(struct platform_device *pdev));
 306         } dev_map[] = {
 307 #if defined(CONFIG_SERIAL_MPSC)
 308                 { MPSC_CTLR_NAME ".0", ev64360_fixup_mpsc_pdata },
 309                 { MPSC_CTLR_NAME ".1", ev64360_fixup_mpsc_pdata },
 310 #endif
 311 #if defined(CONFIG_MV643XX_ETH)
 312                 { MV643XX_ETH_NAME ".0", ev64360_fixup_eth_pdata },
 313                 { MV643XX_ETH_NAME ".1", ev64360_fixup_eth_pdata },
 314                 { MV643XX_ETH_NAME ".2", ev64360_fixup_eth_pdata },
 315 #endif
 316         };
 317         struct platform_device  *pdev;
 318         int     i;
 319
 320         if (dev && dev->bus_id)
 321                 for (i=0; i<ARRAY_SIZE(dev_map); i++)
 322                         if (!strncmp(dev->bus_id, dev_map[i].bus_id,
 323                                 BUS_ID_SIZE)) {
 324
 325                                 pdev = container_of(dev,
 326                                         struct platform_device, dev);
 327                                 dev_map[i].rtn(pdev);
 328                         }
 329
 330         return 0;
 331 }
 332
 333 #ifdef CONFIG_MTD_PHYSMAP
 334
 335 #ifndef MB
 336 #define MB      (1 << 20)
 337 #endif
 338
 339 /*
 340  * MTD Layout.
 341  *
 342  * FLASH Amount:        0xff000000 - 0xffffffff
 343  * -------------        -----------------------
 344  * Reserved:            0xff000000 - 0xff03ffff
 345  * JFFS2 file system:   0xff040000 - 0xffefffff
 346  * U-boot:              0xfff00000 - 0xffffffff
 347  */
 348 static int __init
 349 ev64360_setup_mtd(void)
 350 {
 351         u32     size;
 352         int     ptbl_entries;
 353         static struct mtd_partition     *ptbl;
 354
 355         size = ev64360_flash_size_0 + ev64360_flash_size_1;
 356         if (!size)
 357                 return -ENOMEM;
 358
 359         ptbl_entries = 3;
 360
 361         if ((ptbl = kzalloc(ptbl_entries * sizeof(struct mtd_partition),
 362                 GFP_KERNEL)) == NULL) {
 363
 364                 printk(KERN_WARNING "Can't alloc MTD partition table\n");
 365                 return -ENOMEM;
 366         }
 367
 368         ptbl[0].name = "reserved";
 369         ptbl[0].offset = 0;
 370         ptbl[0].size = EV64360_MTD_RESERVED_SIZE;
 371         ptbl[1].name = "jffs2";
 372         ptbl[1].offset = EV64360_MTD_RESERVED_SIZE;
 373         ptbl[1].size = EV64360_MTD_JFFS2_SIZE;
 374         ptbl[2].name = "U-BOOT";
 375         ptbl[2].offset = EV64360_MTD_RESERVED_SIZE + EV64360_MTD_JFFS2_SIZE;
 376         ptbl[2].size = EV64360_MTD_UBOOT_SIZE;
 377
 378         physmap_map.size = size;
 379         physmap_set_partitions(ptbl, ptbl_entries);
 380         return 0;
 381 }
 382
 383 arch_initcall(ev64360_setup_mtd);
 384 #endif
 385
 386 static void
 387 ev64360_restart(char *cmd)
 388 {
 389         ulong   i = 0xffffffff;
 390         volatile unsigned char * rtc_base = ioremap(EV64360_RTC_WINDOW_BASE,0x4000);
 391
 392         /* issue hard reset */
 393         rtc_base[0xf] = 0x80;
 394         rtc_base[0xc] = 0x00;
 395         rtc_base[0xd] = 0x01;
 396         rtc_base[0xf] = 0x83;
 397
 398         while (i-- > 0) ;
 399         panic("restart failed\n");
 400 }
 401
 402 static void
 403 ev64360_halt(void)
 404 {
 405         while (1) ;
 406         /* NOTREACHED */
 407 }
 408
 409 static void
 410 ev64360_power_off(void)
 411 {
 412         ev64360_halt();
 413         /* NOTREACHED */
 414 }
 415
 416 static int
 417 ev64360_show_cpuinfo(struct seq_file *m)
 418 {
 419         seq_printf(m, "vendor\t\t: " BOARD_VENDOR "\n");
 420         seq_printf(m, "machine\t\t: " BOARD_MACHINE "\n");
 421         seq_printf(m, "bus speed\t: %dMHz\n", ev64360_bus_frequency/1000/1000);
 422
 423         return 0;
 424 }
 425
 426 static void __init
 427 ev64360_calibrate_decr(void)
 428 {
 429         u32 freq;
 430
 431         freq = ev64360_bus_frequency / 4;
 432
 433         printk(KERN_INFO "time_init: decrementer frequency = %lu.%.6lu MHz\n",
 434                (long)freq / 1000000, (long)freq % 1000000);
 435
 436         tb_ticks_per_jiffy = freq / HZ;
 437         tb_to_us = mulhwu_scale_factor(freq, 1000000);
 438 }
 439
 440 unsigned long __init
 441 ev64360_find_end_of_memory(void)
 442 {
 443         return mv64x60_get_mem_size(CONFIG_MV64X60_NEW_BASE,
 444                 MV64x60_TYPE_MV64360);
 445 }
 446
 447 static inline void
 448 ev64360_set_bat(void)
 449 {
 450         mb();
 451         mtspr(SPRN_DBAT2U, 0xf0001ffe);
 452         mtspr(SPRN_DBAT2L, 0xf000002a);
 453         mb();
 454 }
 455
 456 #if defined(CONFIG_SERIAL_TEXT_DEBUG) && defined(CONFIG_SERIAL_MPSC_CONSOLE)
 457 static void __init
 458 ev64360_map_io(void)
 459 {
 460         io_block_mapping(CONFIG_MV64X60_NEW_BASE, \
 461                          CONFIG_MV64X60_NEW_BASE, \
 462                          0x00020000, _PAGE_IO);
 463 }
 464 #endif
 465
 466 void __init
 467 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 468               unsigned long r6, unsigned long r7)
 469 {
 470         parse_bootinfo(find_bootinfo());
 471
 472         /* ASSUMPTION:  If both r3 (bd_t pointer) and r6 (cmdline pointer)
 473          * are non-zero, then we should use the board info from the bd_t
 474          * structure and the cmdline pointed to by r6 instead of the
 475          * information from birecs, if any.  Otherwise, use the information
 476          * from birecs as discovered by the preceding call to
 477          * parse_bootinfo().  This rule should work with both PPCBoot, which
 478          * uses a bd_t board info structure, and the kernel boot wrapper,
 479          * which uses birecs.
 480          */
 481         if (r3 && r6) {
 482                 /* copy board info structure */
 483                 memcpy( (void *)__res,(void *)(r3+KERNELBASE), sizeof(bd_t) );
 484                 /* copy command line */
 485                 *(char *)(r7+KERNELBASE) = 0;
 486                 strcpy(cmd_line, (char *)(r6+KERNELBASE));
 487         }
 488         #ifdef CONFIG_ISA
 489         isa_mem_base = 0;
 490         #endif
 491
 492         ppc_md.setup_arch = ev64360_setup_arch;
 493         ppc_md.show_cpuinfo = ev64360_show_cpuinfo;
 494         ppc_md.init_IRQ = mv64360_init_irq;
 495         ppc_md.get_irq = mv64360_get_irq;
 496         ppc_md.restart = ev64360_restart;
 497         ppc_md.power_off = ev64360_power_off;
 498         ppc_md.halt = ev64360_halt;
 499         ppc_md.find_end_of_memory = ev64360_find_end_of_memory;
 500         ppc_md.init = NULL;
 501
 502         ppc_md.time_init = todc_time_init;
 503         ppc_md.set_rtc_time = todc_set_rtc_time;
 504         ppc_md.get_rtc_time = todc_get_rtc_time;
 505         ppc_md.nvram_read_val = todc_direct_read_val;
 506         ppc_md.nvram_write_val = todc_direct_write_val;
 507         ppc_md.calibrate_decr = ev64360_calibrate_decr;
 508
 509 #if defined(CONFIG_SERIAL_TEXT_DEBUG) && defined(CONFIG_SERIAL_MPSC_CONSOLE)
 510         ppc_md.setup_io_mappings = ev64360_map_io;
 511         ppc_md.progress = mv64x60_mpsc_progress;
 512         mv64x60_progress_init(CONFIG_MV64X60_NEW_BASE);
 513 #endif
 514
 515 #if defined(CONFIG_SERIAL_MPSC) || defined(CONFIG_MV643XX_ETH)
 516         platform_notify = ev64360_platform_notify;
 517 #endif
 518
 519         ev64360_set_bat(); /* Need for ev64360_find_end_of_memory and progress */
 520 }