board/sbc8548/sbc8548.c

   1 /*
   2  * Copyright 2007,2009 Wind River Systems, Inc. <www.windriver.com>
   3  *
   4  * Copyright 2007 Embedded Specialties, Inc.
   5  *
   6  * Copyright 2004, 2007 Freescale Semiconductor.
   7  *
   8  * (C) Copyright 2002 Scott McNutt <smcnutt@artesyncp.com>
   9  *
  10  * See file CREDITS for list of people who contributed to this
  11  * project.
  12  *
  13  * This program is free software; you can redistribute it and/or
  14  * modify it under the terms of the GNU General Public License as
  15  * published by the Free Software Foundation; either version 2 of
  16  * the License, or (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  26  * MA 02111-1307 USA
  27  */
  28
  29 #include <common.h>
  30 #include <pci.h>
  31 #include <asm/processor.h>
  32 #include <asm/immap_85xx.h>
  33 #include <asm/fsl_pci.h>
  34 #include <asm/fsl_ddr_sdram.h>
  35 #include <spd_sdram.h>
  36 #include <netdev.h>
  37 #include <tsec.h>
  38 #include <miiphy.h>
  39 #include <libfdt.h>
  40 #include <fdt_support.h>
  41
  42 DECLARE_GLOBAL_DATA_PTR;
  43
  44 void local_bus_init(void);
  45 void sdram_init(void);
  46 long int fixed_sdram (void);
  47
  48 int board_early_init_f (void)
  49 {
  50         return 0;
  51 }
  52
  53 int checkboard (void)
  54 {
  55         volatile ccsr_local_ecm_t *ecm = (void *)(CONFIG_SYS_MPC85xx_ECM_ADDR);
  56         volatile u_char *rev= (void *)CONFIG_SYS_BD_REV;
  57
  58         printf ("Board: Wind River SBC8548 Rev. 0x%01x\n",
  59                         (*rev) >> 4);
  60
  61         /*
  62          * Initialize local bus.
  63          */
  64         local_bus_init ();
  65
  66         ecm->eedr = 0xffffffff;         /* clear ecm errors */
  67         ecm->eeer = 0xffffffff;         /* enable ecm errors */
  68         return 0;
  69 }
  70
  71 phys_size_t
  72 initdram(int board_type)
  73 {
  74         long dram_size = 0;
  75
  76         puts("Initializing\n");
  77
  78 #if defined(CONFIG_DDR_DLL)
  79         {
  80                 /*
  81                  * Work around to stabilize DDR DLL MSYNC_IN.
  82                  * Errata DDR9 seems to have been fixed.
  83                  * This is now the workaround for Errata DDR11:
  84                  *    Override DLL = 1, Course Adj = 1, Tap Select = 0
  85                  */
  86
  87                 volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
  88
  89                 gur->ddrdllcr = 0x81000000;
  90                 asm("sync;isync;msync");
  91                 udelay(200);
  92         }
  93 #endif
  94
  95 #if defined(CONFIG_SPD_EEPROM)
  96         dram_size = fsl_ddr_sdram();
  97         dram_size = setup_ddr_tlbs(dram_size / 0x100000);
  98         dram_size *= 0x100000;
  99 #else
 100         dram_size = fixed_sdram ();
 101 #endif
 102
 103         /*
 104          * SDRAM Initialization
 105          */
 106         sdram_init();
 107
 108         puts("    DDR: ");
 109         return dram_size;
 110 }
 111
 112 /*
 113  * Initialize Local Bus
 114  */
 115 void
 116 local_bus_init(void)
 117 {
 118         volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
 119         volatile ccsr_lbc_t *lbc = (void *)(CONFIG_SYS_MPC85xx_LBC_ADDR);
 120
 121         uint clkdiv;
 122         uint lbc_hz;
 123         sys_info_t sysinfo;
 124
 125         get_sys_info(&sysinfo);
 126         clkdiv = (lbc->lcrr & LCRR_CLKDIV) * 2;
 127         lbc_hz = sysinfo.freqSystemBus / 1000000 / clkdiv;
 128
 129         gur->lbiuiplldcr1 = 0x00078080;
 130         if (clkdiv == 16) {
 131                 gur->lbiuiplldcr0 = 0x7c0f1bf0;
 132         } else if (clkdiv == 8) {
 133                 gur->lbiuiplldcr0 = 0x6c0f1bf0;
 134         } else if (clkdiv == 4) {
 135                 gur->lbiuiplldcr0 = 0x5c0f1bf0;
 136         }
 137
 138         lbc->lcrr |= 0x00030000;
 139
 140         asm("sync;isync;msync");
 141
 142         lbc->ltesr = 0xffffffff;        /* Clear LBC error interrupts */
 143         lbc->lteir = 0xffffffff;        /* Enable LBC error interrupts */
 144 }
 145
 146 /*
 147  * Initialize SDRAM memory on the Local Bus.
 148  */
 149 void
 150 sdram_init(void)
 151 {
 152 #if defined(CONFIG_SYS_OR3_PRELIM) && defined(CONFIG_SYS_BR3_PRELIM)
 153
 154         uint idx;
 155         volatile ccsr_lbc_t *lbc = (void *)(CONFIG_SYS_MPC85xx_LBC_ADDR);
 156         uint *sdram_addr = (uint *)CONFIG_SYS_LBC_SDRAM_BASE;
 157         uint lsdmr_common;
 158
 159         puts("    SDRAM: ");
 160
 161         print_size (CONFIG_SYS_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
 162
 163         /*
 164          * Setup SDRAM Base and Option Registers
 165          */
 166         lbc->or3 = CONFIG_SYS_OR3_PRELIM;
 167         asm("msync");
 168
 169         lbc->br3 = CONFIG_SYS_BR3_PRELIM;
 170         asm("msync");
 171
 172         lbc->lbcr = CONFIG_SYS_LBC_LBCR;
 173         asm("msync");
 174
 175
 176         lbc->lsrt = CONFIG_SYS_LBC_LSRT;
 177         lbc->mrtpr = CONFIG_SYS_LBC_MRTPR;
 178         asm("msync");
 179
 180         /*
 181          * MPC8548 uses "new" 15-16 style addressing.
 182          */
 183         lsdmr_common = CONFIG_SYS_LBC_LSDMR_COMMON;
 184         lsdmr_common |= LSDMR_BSMA1516;
 185
 186         /*
 187          * Issue PRECHARGE ALL command.
 188          */
 189         lbc->lsdmr = lsdmr_common | LSDMR_OP_PCHALL;
 190         asm("sync;msync");
 191         *sdram_addr = 0xff;
 192         ppcDcbf((unsigned long) sdram_addr);
 193         udelay(100);
 194
 195         /*
 196          * Issue 8 AUTO REFRESH commands.
 197          */
 198         for (idx = 0; idx < 8; idx++) {
 199                 lbc->lsdmr = lsdmr_common | LSDMR_OP_ARFRSH;
 200                 asm("sync;msync");
 201                 *sdram_addr = 0xff;
 202                 ppcDcbf((unsigned long) sdram_addr);
 203                 udelay(100);
 204         }
 205
 206         /*
 207          * Issue 8 MODE-set command.
 208          */
 209         lbc->lsdmr = lsdmr_common | LSDMR_OP_MRW;
 210         asm("sync;msync");
 211         *sdram_addr = 0xff;
 212         ppcDcbf((unsigned long) sdram_addr);
 213         udelay(100);
 214
 215         /*
 216          * Issue NORMAL OP command.
 217          */
 218         lbc->lsdmr = lsdmr_common | LSDMR_OP_NORMAL;
 219         asm("sync;msync");
 220         *sdram_addr = 0xff;
 221         ppcDcbf((unsigned long) sdram_addr);
 222         udelay(200);    /* Overkill. Must wait > 200 bus cycles */
 223
 224 #endif  /* enable SDRAM init */
 225 }
 226
 227 #if defined(CONFIG_SYS_DRAM_TEST)
 228 int
 229 testdram(void)
 230 {
 231         uint *pstart = (uint *) CONFIG_SYS_MEMTEST_START;
 232         uint *pend = (uint *) CONFIG_SYS_MEMTEST_END;
 233         uint *p;
 234
 235         printf("Testing DRAM from 0x%08x to 0x%08x\n",
 236                CONFIG_SYS_MEMTEST_START,
 237                CONFIG_SYS_MEMTEST_END);
 238
 239         printf("DRAM test phase 1:\n");
 240         for (p = pstart; p < pend; p++)
 241                 *p = 0xaaaaaaaa;
 242
 243         for (p = pstart; p < pend; p++) {
 244                 if (*p != 0xaaaaaaaa) {
 245                         printf ("DRAM test fails at: %08x\n", (uint) p);
 246                         return 1;
 247                 }
 248         }
 249
 250         printf("DRAM test phase 2:\n");
 251         for (p = pstart; p < pend; p++)
 252                 *p = 0x55555555;
 253
 254         for (p = pstart; p < pend; p++) {
 255                 if (*p != 0x55555555) {
 256                         printf ("DRAM test fails at: %08x\n", (uint) p);
 257                         return 1;
 258                 }
 259         }
 260
 261         printf("DRAM test passed.\n");
 262         return 0;
 263 }
 264 #endif
 265
 266 #if     !defined(CONFIG_SPD_EEPROM)
 267 /*************************************************************************
 268  *  fixed_sdram init -- doesn't use serial presence detect.
 269  *  assumes 256MB DDR2 SDRAM SODIMM, without ECC, running at DDR400 speed.
 270  ************************************************************************/
 271 long int fixed_sdram (void)
 272 {
 273     #define CONFIG_SYS_DDR_CONTROL 0xc300c000
 274
 275         volatile ccsr_ddr_t *ddr = (void *)(CONFIG_SYS_MPC85xx_DDR_ADDR);
 276
 277         ddr->cs0_bnds           = 0x0000007f;
 278         ddr->cs1_bnds           = 0x008000ff;
 279         ddr->cs2_bnds           = 0x00000000;
 280         ddr->cs3_bnds           = 0x00000000;
 281         ddr->cs0_config         = 0x80010101;
 282         ddr->cs1_config         = 0x80010101;
 283         ddr->cs2_config         = 0x00000000;
 284         ddr->cs3_config         = 0x00000000;
 285         ddr->timing_cfg_3               = 0x00000000;
 286         ddr->timing_cfg_0       = 0x00220802;
 287         ddr->timing_cfg_1       = 0x38377322;
 288         ddr->timing_cfg_2       = 0x0fa044C7;
 289         ddr->sdram_cfg          = 0x4300C000;
 290         ddr->sdram_cfg_2        = 0x24401000;
 291         ddr->sdram_mode         = 0x23C00542;
 292         ddr->sdram_mode_2       = 0x00000000;
 293         ddr->sdram_interval     = 0x05080100;
 294         ddr->sdram_md_cntl      = 0x00000000;
 295         ddr->sdram_data_init    = 0x00000000;
 296         ddr->sdram_clk_cntl     = 0x03800000;
 297         asm("sync;isync;msync");
 298         udelay(500);
 299
 300         #if defined (CONFIG_DDR_ECC)
 301           /* Enable ECC checking */
 302           ddr->sdram_cfg = (CONFIG_SYS_DDR_CONTROL | 0x20000000);
 303         #else
 304           ddr->sdram_cfg = CONFIG_SYS_DDR_CONTROL;
 305         #endif
 306
 307         return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
 308 }
 309 #endif
 310
 311 #ifdef CONFIG_PCI1
 312 static struct pci_controller pci1_hose;
 313 #endif  /* CONFIG_PCI1 */
 314
 315 #ifdef CONFIG_PCIE1
 316 static struct pci_controller pcie1_hose;
 317 #endif  /* CONFIG_PCIE1 */
 318
 319 int first_free_busno=0;
 320
 321 void
 322 pci_init_board(void)
 323 {
 324         volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
 325
 326 #ifdef CONFIG_PCI1
 327 {
 328         volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *) CONFIG_SYS_PCI1_ADDR;
 329         struct pci_controller *hose = &pci1_hose;
 330         struct pci_region *r = hose->regions;
 331
 332         uint pci_32 = gur->pordevsr & MPC85xx_PORDEVSR_PCI1_PCI32;      /* PORDEVSR[15] */
 333         uint pci_arb = gur->pordevsr & MPC85xx_PORDEVSR_PCI1_ARB;       /* PORDEVSR[14] */
 334         uint pci_clk_sel = gur->porpllsr & MPC85xx_PORDEVSR_PCI1_SPD;   /* PORPLLSR[16] */
 335
 336         uint pci_speed = CONFIG_SYS_CLK_FREQ;   /* get_clock_freq() */
 337
 338         if (!(gur->devdisr & MPC85xx_DEVDISR_PCI1)) {
 339                 printf ("    PCI host: %d bit, %s MHz, %s, %s\n",
 340                         (pci_32) ? 32 : 64,
 341                         (pci_speed == 33000000) ? "33" :
 342                         (pci_speed == 66000000) ? "66" : "unknown",
 343                         pci_clk_sel ? "sync" : "async",
 344                         pci_arb ? "arbiter" : "external-arbiter"
 345                         );
 346
 347                 /* outbound memory */
 348                 pci_set_region(r++,
 349                                CONFIG_SYS_PCI1_MEM_BASE,
 350                                CONFIG_SYS_PCI1_MEM_PHYS,
 351                                CONFIG_SYS_PCI1_MEM_SIZE,
 352                                PCI_REGION_MEM);
 353
 354                 /* outbound io */
 355                 pci_set_region(r++,
 356                                CONFIG_SYS_PCI1_IO_BASE,
 357                                CONFIG_SYS_PCI1_IO_PHYS,
 358                                CONFIG_SYS_PCI1_IO_SIZE,
 359                                PCI_REGION_IO);
 360                 hose->region_count = r - hose->regions;
 361
 362                 hose->first_busno=first_free_busno;
 363
 364                 fsl_pci_init(hose, (u32)&pci->cfg_addr, (u32)&pci->cfg_data);
 365                 first_free_busno=hose->last_busno+1;
 366                 printf ("PCI on bus %02x - %02x\n",hose->first_busno,hose->last_busno);
 367 #ifdef CONFIG_PCIX_CHECK
 368                 if (!(gur->pordevsr & MPC85xx_PORDEVSR_PCI1)) {
 369                         /* PCI-X init */
 370                         if (CONFIG_SYS_CLK_FREQ < 66000000)
 371                                 printf("PCI-X will only work at 66 MHz\n");
 372
 373                         reg16 = PCI_X_CMD_MAX_SPLIT | PCI_X_CMD_MAX_READ
 374                                 | PCI_X_CMD_ERO | PCI_X_CMD_DPERR_E;
 375                         pci_hose_write_config_word(hose, bus, PCIX_COMMAND, reg16);
 376                 }
 377 #endif
 378         } else {
 379                 printf ("    PCI: disabled\n");
 380         }
 381 }
 382 #else
 383         gur->devdisr |= MPC85xx_DEVDISR_PCI1; /* disable */
 384 #endif
 385
 386         gur->devdisr |= MPC85xx_DEVDISR_PCI2; /* disable PCI2 */
 387
 388 #ifdef CONFIG_PCIE1
 389 {
 390         volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *) CONFIG_SYS_PCIE1_ADDR;
 391         struct pci_controller *hose = &pcie1_hose;
 392         struct pci_region *r = hose->regions;
 393
 394         int pcie_configured = is_fsl_pci_cfg(LAW_TRGT_IF_PCIE_1, io_sel);
 395
 396         if (pcie_configured && !(gur->devdisr & MPC85xx_DEVDISR_PCIE)){
 397                 printf ("\n    PCIE at base address %x",
 398                         (uint)pci);
 399
 400                 if (pci->pme_msg_det) {
 401                         pci->pme_msg_det = 0xffffffff;
 402                         debug (" with errors.  Clearing.  Now 0x%08x",pci->pme_msg_det);
 403                 }
 404                 printf ("\n");
 405
 406                 /* outbound memory */
 407                 pci_set_region(r++,
 408                                CONFIG_SYS_PCIE1_MEM_BASE,
 409                                CONFIG_SYS_PCIE1_MEM_PHYS,
 410                                CONFIG_SYS_PCIE1_MEM_SIZE,
 411                                PCI_REGION_MEM);
 412
 413                 /* outbound io */
 414                 pci_set_region(r++,
 415                                CONFIG_SYS_PCIE1_IO_BASE,
 416                                CONFIG_SYS_PCIE1_IO_PHYS,
 417                                CONFIG_SYS_PCIE1_IO_SIZE,
 418                                PCI_REGION_IO);
 419
 420                 hose->region_count = r - hose->regions;
 421
 422                 hose->first_busno=first_free_busno;
 423
 424                 fsl_pci_init(hose, (u32)&pci->cfg_addr, (u32)&pci->cfg_data);
 425                 printf ("PCIE on bus %d - %d\n",hose->first_busno,hose->last_busno);
 426
 427                 first_free_busno=hose->last_busno+1;
 428
 429         } else {
 430                 printf ("    PCIE: disabled\n");
 431         }
 432  }
 433 #else
 434         gur->devdisr |= MPC85xx_DEVDISR_PCIE; /* disable */
 435 #endif
 436
 437 }
 438
 439 int board_eth_init(bd_t *bis)
 440 {
 441         tsec_standard_init(bis);
 442         pci_eth_init(bis);
 443         return 0;       /* otherwise cpu_eth_init gets run */
 444 }
 445
 446 int last_stage_init(void)
 447 {
 448         return 0;
 449 }
 450
 451 #if defined(CONFIG_OF_BOARD_SETUP)
 452 void ft_board_setup(void *blob, bd_t *bd)
 453 {
 454         ft_cpu_setup(blob, bd);
 455 #ifdef CONFIG_PCI1
 456         ft_fsl_pci_setup(blob, "pci0", &pci1_hose);
 457 #endif
 458 #ifdef CONFIG_PCIE1
 459         ft_fsl_pci_setup(blob, "pci1", &pcie1_hose);
 460 #endif
 461 }
 462 #endif