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_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
  56         volatile ccsr_local_ecm_t *ecm = (void *)(CONFIG_SYS_MPC85xx_ECM_ADDR);
  57         volatile u_char *rev= (void *)CONFIG_SYS_BD_REV;
  58
  59         printf ("Board: Wind River SBC8548 Rev. 0x%01x\n",
  60                         (*rev) >> 4);
  61
  62         /*
  63          * Initialize local bus.
  64          */
  65         local_bus_init ();
  66
  67         /*
  68          * Hack TSEC 3 and 4 IO voltages.
  69          */
  70         gur->tsec34ioovcr = 0xe7e0;     /*  1110 0111 1110 0xxx */
  71
  72         ecm->eedr = 0xffffffff;         /* clear ecm errors */
  73         ecm->eeer = 0xffffffff;         /* enable ecm errors */
  74         return 0;
  75 }
  76
  77 phys_size_t
  78 initdram(int board_type)
  79 {
  80         long dram_size = 0;
  81
  82         puts("Initializing\n");
  83
  84 #if defined(CONFIG_DDR_DLL)
  85         {
  86                 /*
  87                  * Work around to stabilize DDR DLL MSYNC_IN.
  88                  * Errata DDR9 seems to have been fixed.
  89                  * This is now the workaround for Errata DDR11:
  90                  *    Override DLL = 1, Course Adj = 1, Tap Select = 0
  91                  */
  92
  93                 volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
  94
  95                 gur->ddrdllcr = 0x81000000;
  96                 asm("sync;isync;msync");
  97                 udelay(200);
  98         }
  99 #endif
 100
 101 #if defined(CONFIG_SPD_EEPROM)
 102         dram_size = fsl_ddr_sdram();
 103         dram_size = setup_ddr_tlbs(dram_size / 0x100000);
 104         dram_size *= 0x100000;
 105 #else
 106         dram_size = fixed_sdram ();
 107 #endif
 108
 109         /*
 110          * SDRAM Initialization
 111          */
 112         sdram_init();
 113
 114         puts("    DDR: ");
 115         return dram_size;
 116 }
 117
 118 /*
 119  * Initialize Local Bus
 120  */
 121 void
 122 local_bus_init(void)
 123 {
 124         volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
 125         volatile ccsr_lbc_t *lbc = (void *)(CONFIG_SYS_MPC85xx_LBC_ADDR);
 126
 127         uint clkdiv;
 128         uint lbc_hz;
 129         sys_info_t sysinfo;
 130
 131         get_sys_info(&sysinfo);
 132         clkdiv = (lbc->lcrr & LCRR_CLKDIV) * 2;
 133         lbc_hz = sysinfo.freqSystemBus / 1000000 / clkdiv;
 134
 135         gur->lbiuiplldcr1 = 0x00078080;
 136         if (clkdiv == 16) {
 137                 gur->lbiuiplldcr0 = 0x7c0f1bf0;
 138         } else if (clkdiv == 8) {
 139                 gur->lbiuiplldcr0 = 0x6c0f1bf0;
 140         } else if (clkdiv == 4) {
 141                 gur->lbiuiplldcr0 = 0x5c0f1bf0;
 142         }
 143
 144         lbc->lcrr |= 0x00030000;
 145
 146         asm("sync;isync;msync");
 147
 148         lbc->ltesr = 0xffffffff;        /* Clear LBC error interrupts */
 149         lbc->lteir = 0xffffffff;        /* Enable LBC error interrupts */
 150 }
 151
 152 /*
 153  * Initialize SDRAM memory on the Local Bus.
 154  */
 155 void
 156 sdram_init(void)
 157 {
 158 #if defined(CONFIG_SYS_OR3_PRELIM) && defined(CONFIG_SYS_BR3_PRELIM)
 159
 160         uint idx;
 161         volatile ccsr_lbc_t *lbc = (void *)(CONFIG_SYS_MPC85xx_LBC_ADDR);
 162         uint *sdram_addr = (uint *)CONFIG_SYS_LBC_SDRAM_BASE;
 163         uint lsdmr_common;
 164
 165         puts("    SDRAM: ");
 166
 167         print_size (CONFIG_SYS_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
 168
 169         /*
 170          * Setup SDRAM Base and Option Registers
 171          */
 172         lbc->or3 = CONFIG_SYS_OR3_PRELIM;
 173         asm("msync");
 174
 175         lbc->br3 = CONFIG_SYS_BR3_PRELIM;
 176         asm("msync");
 177
 178         lbc->lbcr = CONFIG_SYS_LBC_LBCR;
 179         asm("msync");
 180
 181
 182         lbc->lsrt = CONFIG_SYS_LBC_LSRT;
 183         lbc->mrtpr = CONFIG_SYS_LBC_MRTPR;
 184         asm("msync");
 185
 186         /*
 187          * MPC8548 uses "new" 15-16 style addressing.
 188          */
 189         lsdmr_common = CONFIG_SYS_LBC_LSDMR_COMMON;
 190         lsdmr_common |= LSDMR_BSMA1516;
 191
 192         /*
 193          * Issue PRECHARGE ALL command.
 194          */
 195         lbc->lsdmr = lsdmr_common | LSDMR_OP_PCHALL;
 196         asm("sync;msync");
 197         *sdram_addr = 0xff;
 198         ppcDcbf((unsigned long) sdram_addr);
 199         udelay(100);
 200
 201         /*
 202          * Issue 8 AUTO REFRESH commands.
 203          */
 204         for (idx = 0; idx < 8; idx++) {
 205                 lbc->lsdmr = lsdmr_common | LSDMR_OP_ARFRSH;
 206                 asm("sync;msync");
 207                 *sdram_addr = 0xff;
 208                 ppcDcbf((unsigned long) sdram_addr);
 209                 udelay(100);
 210         }
 211
 212         /*
 213          * Issue 8 MODE-set command.
 214          */
 215         lbc->lsdmr = lsdmr_common | LSDMR_OP_MRW;
 216         asm("sync;msync");
 217         *sdram_addr = 0xff;
 218         ppcDcbf((unsigned long) sdram_addr);
 219         udelay(100);
 220
 221         /*
 222          * Issue NORMAL OP command.
 223          */
 224         lbc->lsdmr = lsdmr_common | LSDMR_OP_NORMAL;
 225         asm("sync;msync");
 226         *sdram_addr = 0xff;
 227         ppcDcbf((unsigned long) sdram_addr);
 228         udelay(200);    /* Overkill. Must wait > 200 bus cycles */
 229
 230 #endif  /* enable SDRAM init */
 231 }
 232
 233 #if defined(CONFIG_SYS_DRAM_TEST)
 234 int
 235 testdram(void)
 236 {
 237         uint *pstart = (uint *) CONFIG_SYS_MEMTEST_START;
 238         uint *pend = (uint *) CONFIG_SYS_MEMTEST_END;
 239         uint *p;
 240
 241         printf("Testing DRAM from 0x%08x to 0x%08x\n",
 242                CONFIG_SYS_MEMTEST_START,
 243                CONFIG_SYS_MEMTEST_END);
 244
 245         printf("DRAM test phase 1:\n");
 246         for (p = pstart; p < pend; p++)
 247                 *p = 0xaaaaaaaa;
 248
 249         for (p = pstart; p < pend; p++) {
 250                 if (*p != 0xaaaaaaaa) {
 251                         printf ("DRAM test fails at: %08x\n", (uint) p);
 252                         return 1;
 253                 }
 254         }
 255
 256         printf("DRAM test phase 2:\n");
 257         for (p = pstart; p < pend; p++)
 258                 *p = 0x55555555;
 259
 260         for (p = pstart; p < pend; p++) {
 261                 if (*p != 0x55555555) {
 262                         printf ("DRAM test fails at: %08x\n", (uint) p);
 263                         return 1;
 264                 }
 265         }
 266
 267         printf("DRAM test passed.\n");
 268         return 0;
 269 }
 270 #endif
 271
 272 #if     !defined(CONFIG_SPD_EEPROM)
 273 /*************************************************************************
 274  *  fixed_sdram init -- doesn't use serial presence detect.
 275  *  assumes 256MB DDR2 SDRAM SODIMM, without ECC, running at DDR400 speed.
 276  ************************************************************************/
 277 long int fixed_sdram (void)
 278 {
 279     #define CONFIG_SYS_DDR_CONTROL 0xc300c000
 280
 281         volatile ccsr_ddr_t *ddr = (void *)(CONFIG_SYS_MPC85xx_DDR_ADDR);
 282
 283         ddr->cs0_bnds           = 0x0000007f;
 284         ddr->cs1_bnds           = 0x008000ff;
 285         ddr->cs2_bnds           = 0x00000000;
 286         ddr->cs3_bnds           = 0x00000000;
 287         ddr->cs0_config         = 0x80010101;
 288         ddr->cs1_config         = 0x80010101;
 289         ddr->cs2_config         = 0x00000000;
 290         ddr->cs3_config         = 0x00000000;
 291         ddr->timing_cfg_3               = 0x00000000;
 292         ddr->timing_cfg_0       = 0x00220802;
 293         ddr->timing_cfg_1       = 0x38377322;
 294         ddr->timing_cfg_2       = 0x0fa044C7;
 295         ddr->sdram_cfg          = 0x4300C000;
 296         ddr->sdram_cfg_2        = 0x24401000;
 297         ddr->sdram_mode         = 0x23C00542;
 298         ddr->sdram_mode_2       = 0x00000000;
 299         ddr->sdram_interval     = 0x05080100;
 300         ddr->sdram_md_cntl      = 0x00000000;
 301         ddr->sdram_data_init    = 0x00000000;
 302         ddr->sdram_clk_cntl     = 0x03800000;
 303         asm("sync;isync;msync");
 304         udelay(500);
 305
 306         #if defined (CONFIG_DDR_ECC)
 307           /* Enable ECC checking */
 308           ddr->sdram_cfg = (CONFIG_SYS_DDR_CONTROL | 0x20000000);
 309         #else
 310           ddr->sdram_cfg = CONFIG_SYS_DDR_CONTROL;
 311         #endif
 312
 313         return CONFIG_SYS_SDRAM_SIZE * 1024 * 1024;
 314 }
 315 #endif
 316
 317 #ifdef CONFIG_PCI1
 318 static struct pci_controller pci1_hose;
 319 #endif  /* CONFIG_PCI1 */
 320
 321 #ifdef CONFIG_PCIE1
 322 static struct pci_controller pcie1_hose;
 323 #endif  /* CONFIG_PCIE1 */
 324
 325 int first_free_busno=0;
 326
 327 void
 328 pci_init_board(void)
 329 {
 330         volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
 331
 332 #ifdef CONFIG_PCI1
 333 {
 334         volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *) CONFIG_SYS_PCI1_ADDR;
 335         struct pci_controller *hose = &pci1_hose;
 336         struct pci_region *r = hose->regions;
 337
 338         uint pci_32 = gur->pordevsr & MPC85xx_PORDEVSR_PCI1_PCI32;      /* PORDEVSR[15] */
 339         uint pci_arb = gur->pordevsr & MPC85xx_PORDEVSR_PCI1_ARB;       /* PORDEVSR[14] */
 340         uint pci_clk_sel = gur->porpllsr & MPC85xx_PORDEVSR_PCI1_SPD;   /* PORPLLSR[16] */
 341
 342         uint pci_speed = get_clock_freq ();     /* PCI PSPEED in [4:5] */
 343
 344         if (!(gur->devdisr & MPC85xx_DEVDISR_PCI1)) {
 345                 printf ("    PCI host: %d bit, %s MHz, %s, %s\n",
 346                         (pci_32) ? 32 : 64,
 347                         (pci_speed == 33333000) ? "33" :
 348                         (pci_speed == 66666000) ? "66" : "unknown",
 349                         pci_clk_sel ? "sync" : "async",
 350                         pci_arb ? "arbiter" : "external-arbiter"
 351                         );
 352
 353                 /* outbound memory */
 354                 pci_set_region(r++,
 355                                CONFIG_SYS_PCI1_MEM_BASE,
 356                                CONFIG_SYS_PCI1_MEM_PHYS,
 357                                CONFIG_SYS_PCI1_MEM_SIZE,
 358                                PCI_REGION_MEM);
 359
 360                 /* outbound io */
 361                 pci_set_region(r++,
 362                                CONFIG_SYS_PCI1_IO_BASE,
 363                                CONFIG_SYS_PCI1_IO_PHYS,
 364                                CONFIG_SYS_PCI1_IO_SIZE,
 365                                PCI_REGION_IO);
 366                 hose->region_count = r - hose->regions;
 367
 368                 hose->first_busno=first_free_busno;
 369
 370                 fsl_pci_init(hose, (u32)&pci->cfg_addr, (u32)&pci->cfg_data);
 371                 first_free_busno=hose->last_busno+1;
 372                 printf ("PCI on bus %02x - %02x\n",hose->first_busno,hose->last_busno);
 373 #ifdef CONFIG_PCIX_CHECK
 374                 if (!(gur->pordevsr & MPC85xx_PORDEVSR_PCI1)) {
 375                         /* PCI-X init */
 376                         if (CONFIG_SYS_CLK_FREQ < 66000000)
 377                                 printf("PCI-X will only work at 66 MHz\n");
 378
 379                         reg16 = PCI_X_CMD_MAX_SPLIT | PCI_X_CMD_MAX_READ
 380                                 | PCI_X_CMD_ERO | PCI_X_CMD_DPERR_E;
 381                         pci_hose_write_config_word(hose, bus, PCIX_COMMAND, reg16);
 382                 }
 383 #endif
 384         } else {
 385                 printf ("    PCI: disabled\n");
 386         }
 387 }
 388 #else
 389         gur->devdisr |= MPC85xx_DEVDISR_PCI1; /* disable */
 390 #endif
 391
 392         gur->devdisr |= MPC85xx_DEVDISR_PCI2; /* disable PCI2 */
 393
 394 #ifdef CONFIG_PCIE1
 395 {
 396         volatile ccsr_fsl_pci_t *pci = (ccsr_fsl_pci_t *) CONFIG_SYS_PCIE1_ADDR;
 397         struct pci_controller *hose = &pcie1_hose;
 398         struct pci_region *r = hose->regions;
 399
 400         int pcie_configured = is_fsl_pci_cfg(LAW_TRGT_IF_PCIE_1, io_sel);
 401
 402         if (pcie_configured && !(gur->devdisr & MPC85xx_DEVDISR_PCIE)){
 403                 printf ("\n    PCIE at base address %x",
 404                         (uint)pci);
 405
 406                 if (pci->pme_msg_det) {
 407                         pci->pme_msg_det = 0xffffffff;
 408                         debug (" with errors.  Clearing.  Now 0x%08x",pci->pme_msg_det);
 409                 }
 410                 printf ("\n");
 411
 412                 /* outbound memory */
 413                 pci_set_region(r++,
 414                                CONFIG_SYS_PCIE1_MEM_BASE,
 415                                CONFIG_SYS_PCIE1_MEM_PHYS,
 416                                CONFIG_SYS_PCIE1_MEM_SIZE,
 417                                PCI_REGION_MEM);
 418
 419                 /* outbound io */
 420                 pci_set_region(r++,
 421                                CONFIG_SYS_PCIE1_IO_BASE,
 422                                CONFIG_SYS_PCIE1_IO_PHYS,
 423                                CONFIG_SYS_PCIE1_IO_SIZE,
 424                                PCI_REGION_IO);
 425
 426                 hose->region_count = r - hose->regions;
 427
 428                 hose->first_busno=first_free_busno;
 429
 430                 fsl_pci_init(hose, (u32)&pci->cfg_addr, (u32)&pci->cfg_data);
 431                 printf ("PCIE on bus %d - %d\n",hose->first_busno,hose->last_busno);
 432
 433                 first_free_busno=hose->last_busno+1;
 434
 435         } else {
 436                 printf ("    PCIE: disabled\n");
 437         }
 438  }
 439 #else
 440         gur->devdisr |= MPC85xx_DEVDISR_PCIE; /* disable */
 441 #endif
 442
 443 }
 444
 445 int board_eth_init(bd_t *bis)
 446 {
 447         tsec_standard_init(bis);
 448         pci_eth_init(bis);
 449         return 0;       /* otherwise cpu_eth_init gets run */
 450 }
 451
 452 int last_stage_init(void)
 453 {
 454         return 0;
 455 }
 456
 457 #if defined(CONFIG_OF_BOARD_SETUP)
 458 void ft_board_setup(void *blob, bd_t *bd)
 459 {
 460         ft_cpu_setup(blob, bd);
 461 #ifdef CONFIG_PCI1
 462         ft_fsl_pci_setup(blob, "pci0", &pci1_hose);
 463 #endif
 464 #ifdef CONFIG_PCIE1
 465         ft_fsl_pci_setup(blob, "pci1", &pcie1_hose);
 466 #endif
 467 }
 468 #endif