board/freescale/mpc8555cds/mpc8555cds.c

   1 /*
   2  * Copyright 2004 Freescale Semiconductor.
   3  *
   4  * See file CREDITS for list of people who contributed to this
   5  * project.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of
  10  * the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  20  * MA 02111-1307 USA
  21  */
  22
  23 #include <common.h>
  24 #include <pci.h>
  25 #include <asm/processor.h>
  26 #include <asm/immap_85xx.h>
  27 #include <ioports.h>
  28 #include <spd.h>
  29 #include <libfdt.h>
  30 #include <fdt_support.h>
  31
  32 #include "../common/cadmus.h"
  33 #include "../common/eeprom.h"
  34 #include "../common/via.h"
  35
  36 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
  37 extern void ddr_enable_ecc(unsigned int dram_size);
  38 #endif
  39
  40 extern long int spd_sdram(void);
  41
  42 void local_bus_init(void);
  43 void sdram_init(void);
  44
  45 /*
  46  * I/O Port configuration table
  47  *
  48  * if conf is 1, then that port pin will be configured at boot time
  49  * according to the five values podr/pdir/ppar/psor/pdat for that entry
  50  */
  51
  52 const iop_conf_t iop_conf_tab[4][32] = {
  53
  54     /* Port A configuration */
  55     {   /*            conf ppar psor pdir podr pdat */
  56         /* PA31 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 TxENB */
  57         /* PA30 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 TxClav   */
  58         /* PA29 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 TxSOC  */
  59         /* PA28 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 RxENB */
  60         /* PA27 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 RxSOC */
  61         /* PA26 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 RxClav */
  62         /* PA25 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 ATMTXD[0] */
  63         /* PA24 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 ATMTXD[1] */
  64         /* PA23 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 ATMTXD[2] */
  65         /* PA22 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 ATMTXD[3] */
  66         /* PA21 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 ATMTXD[4] */
  67         /* PA20 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 ATMTXD[5] */
  68         /* PA19 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 ATMTXD[6] */
  69         /* PA18 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 ATMTXD[7] */
  70         /* PA17 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 ATMRXD[7] */
  71         /* PA16 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 ATMRXD[6] */
  72         /* PA15 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 ATMRXD[5] */
  73         /* PA14 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 ATMRXD[4] */
  74         /* PA13 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 ATMRXD[3] */
  75         /* PA12 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 ATMRXD[2] */
  76         /* PA11 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 ATMRXD[1] */
  77         /* PA10 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 ATMRXD[0] */
  78         /* PA9  */ {   0,   1,   1,   1,   0,   0   }, /* FCC1 L1TXD */
  79         /* PA8  */ {   0,   1,   1,   0,   0,   0   }, /* FCC1 L1RXD */
  80         /* PA7  */ {   0,   0,   0,   1,   0,   0   }, /* PA7 */
  81         /* PA6  */ {   0,   1,   1,   1,   0,   0   }, /* TDM A1 L1RSYNC */
  82         /* PA5  */ {   0,   0,   0,   1,   0,   0   }, /* PA5 */
  83         /* PA4  */ {   0,   0,   0,   1,   0,   0   }, /* PA4 */
  84         /* PA3  */ {   0,   0,   0,   1,   0,   0   }, /* PA3 */
  85         /* PA2  */ {   0,   0,   0,   1,   0,   0   }, /* PA2 */
  86         /* PA1  */ {   1,   0,   0,   0,   0,   0   }, /* FREERUN */
  87         /* PA0  */ {   0,   0,   0,   1,   0,   0   }  /* PA0 */
  88     },
  89
  90     /* Port B configuration */
  91     {   /*            conf ppar psor pdir podr pdat */
  92         /* PB31 */ {   1,   1,   0,   1,   0,   0   }, /* FCC2 MII TX_ER */
  93         /* PB30 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 MII RX_DV */
  94         /* PB29 */ {   1,   1,   1,   1,   0,   0   }, /* FCC2 MII TX_EN */
  95         /* PB28 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 MII RX_ER */
  96         /* PB27 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 MII COL */
  97         /* PB26 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 MII CRS */
  98         /* PB25 */ {   1,   1,   0,   1,   0,   0   }, /* FCC2 MII TxD[3] */
  99         /* PB24 */ {   1,   1,   0,   1,   0,   0   }, /* FCC2 MII TxD[2] */
 100         /* PB23 */ {   1,   1,   0,   1,   0,   0   }, /* FCC2 MII TxD[1] */
 101         /* PB22 */ {   1,   1,   0,   1,   0,   0   }, /* FCC2 MII TxD[0] */
 102         /* PB21 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 MII RxD[0] */
 103         /* PB20 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 MII RxD[1] */
 104         /* PB19 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 MII RxD[2] */
 105         /* PB18 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 MII RxD[3] */
 106         /* PB17 */ {   0,   1,   0,   0,   0,   0   }, /* FCC3:RX_DIV */
 107         /* PB16 */ {   0,   1,   0,   0,   0,   0   }, /* FCC3:RX_ERR */
 108         /* PB15 */ {   0,   1,   0,   1,   0,   0   }, /* FCC3:TX_ERR */
 109         /* PB14 */ {   0,   1,   0,   1,   0,   0   }, /* FCC3:TX_EN */
 110         /* PB13 */ {   0,   1,   0,   0,   0,   0   }, /* FCC3:COL */
 111         /* PB12 */ {   0,   1,   0,   0,   0,   0   }, /* FCC3:CRS */
 112         /* PB11 */ {   0,   1,   0,   0,   0,   0   }, /* FCC3:RXD */
 113         /* PB10 */ {   0,   1,   0,   0,   0,   0   }, /* FCC3:RXD */
 114         /* PB9  */ {   0,   1,   0,   0,   0,   0   }, /* FCC3:RXD */
 115         /* PB8  */ {   0,   1,   0,   0,   0,   0   }, /* FCC3:RXD */
 116         /* PB7  */ {   0,   1,   0,   1,   0,   0   }, /* FCC3:TXD */
 117         /* PB6  */ {   0,   1,   0,   1,   0,   0   }, /* FCC3:TXD */
 118         /* PB5  */ {   0,   1,   0,   1,   0,   0   }, /* FCC3:TXD */
 119         /* PB4  */ {   0,   1,   0,   1,   0,   0   }, /* FCC3:TXD */
 120         /* PB3  */ {   0,   0,   0,   0,   0,   0   }, /* pin doesn't exist */
 121         /* PB2  */ {   0,   0,   0,   0,   0,   0   }, /* pin doesn't exist */
 122         /* PB1  */ {   0,   0,   0,   0,   0,   0   }, /* pin doesn't exist */
 123         /* PB0  */ {   0,   0,   0,   0,   0,   0   }  /* pin doesn't exist */
 124     },
 125
 126     /* Port C */
 127     {   /*            conf ppar psor pdir podr pdat */
 128         /* PC31 */ {   0,   0,   0,   1,   0,   0   }, /* PC31 */
 129         /* PC30 */ {   0,   0,   0,   1,   0,   0   }, /* PC30 */
 130         /* PC29 */ {   0,   1,   1,   0,   0,   0   }, /* SCC1 EN *CLSN */
 131         /* PC28 */ {   0,   0,   0,   1,   0,   0   }, /* PC28 */
 132         /* PC27 */ {   0,   0,   0,   1,   0,   0   }, /* UART Clock in */
 133         /* PC26 */ {   0,   0,   0,   1,   0,   0   }, /* PC26 */
 134         /* PC25 */ {   0,   0,   0,   1,   0,   0   }, /* PC25 */
 135         /* PC24 */ {   0,   0,   0,   1,   0,   0   }, /* PC24 */
 136         /* PC23 */ {   0,   1,   0,   1,   0,   0   }, /* ATMTFCLK */
 137         /* PC22 */ {   0,   1,   0,   0,   0,   0   }, /* ATMRFCLK */
 138         /* PC21 */ {   0,   1,   0,   0,   0,   0   }, /* SCC1 EN RXCLK */
 139         /* PC20 */ {   0,   1,   0,   0,   0,   0   }, /* SCC1 EN TXCLK */
 140         /* PC19 */ {   1,   1,   0,   0,   0,   0   }, /* FCC2 MII RX_CLK CLK13 */
 141         /* PC18 */ {   1,   1,   0,   0,   0,   0   }, /* FCC Tx Clock (CLK14) */
 142         /* PC17 */ {   0,   0,   0,   1,   0,   0   }, /* PC17 */
 143         /* PC16 */ {   0,   1,   0,   0,   0,   0   }, /* FCC Tx Clock (CLK16) */
 144         /* PC15 */ {   1,   1,   0,   0,   0,   0   }, /* PC15 */
 145         /* PC14 */ {   0,   1,   0,   0,   0,   0   }, /* SCC1 EN *CD */
 146         /* PC13 */ {   0,   0,   0,   1,   0,   0   }, /* PC13 */
 147         /* PC12 */ {   0,   1,   0,   1,   0,   0   }, /* PC12 */
 148         /* PC11 */ {   0,   0,   0,   1,   0,   0   }, /* LXT971 transmit control */
 149         /* PC10 */ {   1,   0,   0,   1,   0,   0   }, /* FETHMDC */
 150         /* PC9  */ {   1,   0,   0,   0,   0,   0   }, /* FETHMDIO */
 151         /* PC8  */ {   0,   0,   0,   1,   0,   0   }, /* PC8 */
 152         /* PC7  */ {   0,   0,   0,   1,   0,   0   }, /* PC7 */
 153         /* PC6  */ {   0,   0,   0,   1,   0,   0   }, /* PC6 */
 154         /* PC5  */ {   0,   0,   0,   1,   0,   0   }, /* PC5 */
 155         /* PC4  */ {   0,   0,   0,   1,   0,   0   }, /* PC4 */
 156         /* PC3  */ {   0,   0,   0,   1,   0,   0   }, /* PC3 */
 157         /* PC2  */ {   0,   0,   0,   1,   0,   1   }, /* ENET FDE */
 158         /* PC1  */ {   0,   0,   0,   1,   0,   0   }, /* ENET DSQE */
 159         /* PC0  */ {   0,   0,   0,   1,   0,   0   }, /* ENET LBK */
 160     },
 161
 162     /* Port D */
 163     {   /*            conf ppar psor pdir podr pdat */
 164         /* PD31 */ {   1,   1,   0,   0,   0,   0   }, /* SCC1 EN RxD */
 165         /* PD30 */ {   1,   1,   1,   1,   0,   0   }, /* SCC1 EN TxD */
 166         /* PD29 */ {   1,   1,   0,   1,   0,   0   }, /* SCC1 EN TENA */
 167         /* PD28 */ {   0,   1,   0,   0,   0,   0   }, /* PD28 */
 168         /* PD27 */ {   0,   1,   1,   1,   0,   0   }, /* PD27 */
 169         /* PD26 */ {   0,   0,   0,   1,   0,   0   }, /* PD26 */
 170         /* PD25 */ {   0,   0,   0,   1,   0,   0   }, /* PD25 */
 171         /* PD24 */ {   0,   0,   0,   1,   0,   0   }, /* PD24 */
 172         /* PD23 */ {   0,   0,   0,   1,   0,   0   }, /* PD23 */
 173         /* PD22 */ {   0,   0,   0,   1,   0,   0   }, /* PD22 */
 174         /* PD21 */ {   0,   0,   0,   1,   0,   0   }, /* PD21 */
 175         /* PD20 */ {   0,   0,   0,   1,   0,   0   }, /* PD20 */
 176         /* PD19 */ {   0,   0,   0,   1,   0,   0   }, /* PD19 */
 177         /* PD18 */ {   0,   0,   0,   1,   0,   0   }, /* PD18 */
 178         /* PD17 */ {   0,   1,   0,   0,   0,   0   }, /* FCC1 ATMRXPRTY */
 179         /* PD16 */ {   0,   1,   0,   1,   0,   0   }, /* FCC1 ATMTXPRTY */
 180         /* PD15 */ {   0,   1,   1,   0,   1,   0   }, /* I2C SDA */
 181         /* PD14 */ {   0,   0,   0,   1,   0,   0   }, /* LED */
 182         /* PD13 */ {   0,   0,   0,   0,   0,   0   }, /* PD13 */
 183         /* PD12 */ {   0,   0,   0,   0,   0,   0   }, /* PD12 */
 184         /* PD11 */ {   0,   0,   0,   0,   0,   0   }, /* PD11 */
 185         /* PD10 */ {   0,   0,   0,   0,   0,   0   }, /* PD10 */
 186         /* PD9  */ {   0,   1,   0,   1,   0,   0   }, /* SMC1 TXD */
 187         /* PD8  */ {   0,   1,   0,   0,   0,   0   }, /* SMC1 RXD */
 188         /* PD7  */ {   0,   0,   0,   1,   0,   1   }, /* PD7 */
 189         /* PD6  */ {   0,   0,   0,   1,   0,   1   }, /* PD6 */
 190         /* PD5  */ {   0,   0,   0,   1,   0,   1   }, /* PD5 */
 191         /* PD4  */ {   0,   0,   0,   1,   0,   1   }, /* PD4 */
 192         /* PD3  */ {   0,   0,   0,   0,   0,   0   }, /* pin doesn't exist */
 193         /* PD2  */ {   0,   0,   0,   0,   0,   0   }, /* pin doesn't exist */
 194         /* PD1  */ {   0,   0,   0,   0,   0,   0   }, /* pin doesn't exist */
 195         /* PD0  */ {   0,   0,   0,   0,   0,   0   }  /* pin doesn't exist */
 196     }
 197 };
 198
 199 int board_early_init_f (void)
 200 {
 201         return 0;
 202 }
 203
 204 int checkboard (void)
 205 {
 206         volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
 207
 208         /* PCI slot in USER bits CSR[6:7] by convention. */
 209         uint pci_slot = get_pci_slot ();
 210
 211         uint pci_dual = get_pci_dual ();        /* PCI DUAL in CM_PCI[3] */
 212         uint pci1_32 = gur->pordevsr & 0x10000; /* PORDEVSR[15] */
 213         uint pci1_clk_sel = gur->porpllsr & 0x8000;     /* PORPLLSR[16] */
 214         uint pci2_clk_sel = gur->porpllsr & 0x4000;     /* PORPLLSR[17] */
 215
 216         uint pci1_speed = get_clock_freq ();    /* PCI PSPEED in [4:5] */
 217
 218         uint cpu_board_rev = get_cpu_board_revision ();
 219
 220         printf ("Board: CDS Version 0x%02x, PCI Slot %d\n",
 221                 get_board_version (), pci_slot);
 222
 223         printf ("CPU Board Revision %d.%d (0x%04x)\n",
 224                 MPC85XX_CPU_BOARD_MAJOR (cpu_board_rev),
 225                 MPC85XX_CPU_BOARD_MINOR (cpu_board_rev), cpu_board_rev);
 226
 227         printf ("    PCI1: %d bit, %s MHz, %s\n",
 228                 (pci1_32) ? 32 : 64,
 229                 (pci1_speed == 33000000) ? "33" :
 230                 (pci1_speed == 66000000) ? "66" : "unknown",
 231                 pci1_clk_sel ? "sync" : "async");
 232
 233         if (pci_dual) {
 234                 printf ("    PCI2: 32 bit, 66 MHz, %s\n",
 235                         pci2_clk_sel ? "sync" : "async");
 236         } else {
 237                 printf ("    PCI2: disabled\n");
 238         }
 239
 240         /*
 241          * Initialize local bus.
 242          */
 243         local_bus_init ();
 244
 245         return 0;
 246 }
 247
 248 long int
 249 initdram(int board_type)
 250 {
 251         long dram_size = 0;
 252
 253         puts("Initializing\n");
 254
 255 #if defined(CONFIG_DDR_DLL)
 256         {
 257                 /*
 258                  * Work around to stabilize DDR DLL MSYNC_IN.
 259                  * Errata DDR9 seems to have been fixed.
 260                  * This is now the workaround for Errata DDR11:
 261                  *    Override DLL = 1, Course Adj = 1, Tap Select = 0
 262                  */
 263
 264                 volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
 265
 266                 gur->ddrdllcr = 0x81000000;
 267                 asm("sync;isync;msync");
 268                 udelay(200);
 269         }
 270 #endif
 271         dram_size = spd_sdram();
 272
 273 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
 274         /*
 275          * Initialize and enable DDR ECC.
 276          */
 277         ddr_enable_ecc(dram_size);
 278 #endif
 279         /*
 280          * SDRAM Initialization
 281          */
 282         sdram_init();
 283
 284         puts("    DDR: ");
 285         return dram_size;
 286 }
 287
 288 /*
 289  * Initialize Local Bus
 290  */
 291 void
 292 local_bus_init(void)
 293 {
 294         volatile ccsr_gur_t *gur = (void *)(CFG_MPC85xx_GUTS_ADDR);
 295         volatile ccsr_lbc_t *lbc = (void *)(CFG_MPC85xx_LBC_ADDR);
 296
 297         uint clkdiv;
 298         uint lbc_hz;
 299         sys_info_t sysinfo;
 300         uint temp_lbcdll;
 301
 302         /*
 303          * Errata LBC11.
 304          * Fix Local Bus clock glitch when DLL is enabled.
 305          *
 306          * If localbus freq is < 66Mhz, DLL bypass mode must be used.
 307          * If localbus freq is > 133Mhz, DLL can be safely enabled.
 308          * Between 66 and 133, the DLL is enabled with an override workaround.
 309          */
 310
 311         get_sys_info(&sysinfo);
 312         clkdiv = lbc->lcrr & 0x0f;
 313         lbc_hz = sysinfo.freqSystemBus / 1000000 / clkdiv;
 314
 315         if (lbc_hz < 66) {
 316                 lbc->lcrr |= 0x80000000;        /* DLL Bypass */
 317
 318         } else if (lbc_hz >= 133) {
 319                 lbc->lcrr &= (~0x80000000);             /* DLL Enabled */
 320
 321         } else {
 322                 lbc->lcrr &= (~0x8000000);      /* DLL Enabled */
 323                 udelay(200);
 324
 325                 /*
 326                  * Sample LBC DLL ctrl reg, upshift it to set the
 327                  * override bits.
 328                  */
 329                 temp_lbcdll = gur->lbcdllcr;
 330                 gur->lbcdllcr = (((temp_lbcdll & 0xff) << 16) | 0x80000000);
 331                 asm("sync;isync;msync");
 332         }
 333 }
 334
 335 /*
 336  * Initialize SDRAM memory on the Local Bus.
 337  */
 338 void
 339 sdram_init(void)
 340 {
 341 #if defined(CFG_OR2_PRELIM) && defined(CFG_BR2_PRELIM)
 342
 343         uint idx;
 344         volatile ccsr_lbc_t *lbc = (void *)(CFG_MPC85xx_LBC_ADDR);
 345         uint *sdram_addr = (uint *)CFG_LBC_SDRAM_BASE;
 346         uint cpu_board_rev;
 347         uint lsdmr_common;
 348
 349         puts("    SDRAM: ");
 350
 351         print_size (CFG_LBC_SDRAM_SIZE * 1024 * 1024, "\n");
 352
 353         /*
 354          * Setup SDRAM Base and Option Registers
 355          */
 356         lbc->or2 = CFG_OR2_PRELIM;
 357         asm("msync");
 358
 359         lbc->br2 = CFG_BR2_PRELIM;
 360         asm("msync");
 361
 362         lbc->lbcr = CFG_LBC_LBCR;
 363         asm("msync");
 364
 365         lbc->lsrt = CFG_LBC_LSRT;
 366         lbc->mrtpr = CFG_LBC_MRTPR;
 367         asm("msync");
 368
 369         /*
 370          * Determine which address lines to use baed on CPU board rev.
 371          */
 372         cpu_board_rev = get_cpu_board_revision();
 373         lsdmr_common = CFG_LBC_LSDMR_COMMON;
 374         if (cpu_board_rev == MPC85XX_CPU_BOARD_REV_1_0) {
 375                 lsdmr_common |= CFG_LBC_LSDMR_BSMA1617;
 376         } else if (cpu_board_rev == MPC85XX_CPU_BOARD_REV_1_1) {
 377                 lsdmr_common |= CFG_LBC_LSDMR_BSMA1516;
 378         } else {
 379                 /*
 380                  * Assume something unable to identify itself is
 381                  * really old, and likely has lines 16/17 mapped.
 382                  */
 383                 lsdmr_common |= CFG_LBC_LSDMR_BSMA1617;
 384         }
 385
 386         /*
 387          * Issue PRECHARGE ALL command.
 388          */
 389         lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_PCHALL;
 390         asm("sync;msync");
 391         *sdram_addr = 0xff;
 392         ppcDcbf((unsigned long) sdram_addr);
 393         udelay(100);
 394
 395         /*
 396          * Issue 8 AUTO REFRESH commands.
 397          */
 398         for (idx = 0; idx < 8; idx++) {
 399                 lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_ARFRSH;
 400                 asm("sync;msync");
 401                 *sdram_addr = 0xff;
 402                 ppcDcbf((unsigned long) sdram_addr);
 403                 udelay(100);
 404         }
 405
 406         /*
 407          * Issue 8 MODE-set command.
 408          */
 409         lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_MRW;
 410         asm("sync;msync");
 411         *sdram_addr = 0xff;
 412         ppcDcbf((unsigned long) sdram_addr);
 413         udelay(100);
 414
 415         /*
 416          * Issue NORMAL OP command.
 417          */
 418         lbc->lsdmr = lsdmr_common | CFG_LBC_LSDMR_OP_NORMAL;
 419         asm("sync;msync");
 420         *sdram_addr = 0xff;
 421         ppcDcbf((unsigned long) sdram_addr);
 422         udelay(200);    /* Overkill. Must wait > 200 bus cycles */
 423
 424 #endif  /* enable SDRAM init */
 425 }
 426
 427 #if defined(CFG_DRAM_TEST)
 428 int
 429 testdram(void)
 430 {
 431         uint *pstart = (uint *) CFG_MEMTEST_START;
 432         uint *pend = (uint *) CFG_MEMTEST_END;
 433         uint *p;
 434
 435         printf("Testing DRAM from 0x%08x to 0x%08x\n",
 436                CFG_MEMTEST_START,
 437                CFG_MEMTEST_END);
 438
 439         printf("DRAM test phase 1:\n");
 440         for (p = pstart; p < pend; p++)
 441                 *p = 0xaaaaaaaa;
 442
 443         for (p = pstart; p < pend; p++) {
 444                 if (*p != 0xaaaaaaaa) {
 445                         printf ("DRAM test fails at: %08x\n", (uint) p);
 446                         return 1;
 447                 }
 448         }
 449
 450         printf("DRAM test phase 2:\n");
 451         for (p = pstart; p < pend; p++)
 452                 *p = 0x55555555;
 453
 454         for (p = pstart; p < pend; p++) {
 455                 if (*p != 0x55555555) {
 456                         printf ("DRAM test fails at: %08x\n", (uint) p);
 457                         return 1;
 458                 }
 459         }
 460
 461         printf("DRAM test passed.\n");
 462         return 0;
 463 }
 464 #endif
 465
 466 #ifdef CONFIG_PCI
 467 /* For some reason the Tundra PCI bridge shows up on itself as a
 468  * different device.  Work around that by refusing to configure it
 469  */
 470 void dummy_func(struct pci_controller* hose, pci_dev_t dev, struct pci_config_table *tab) { }
 471
 472 static struct pci_config_table pci_mpc85xxcds_config_table[] = {
 473         {0x10e3, 0x0513, PCI_ANY_ID, 1, 3, PCI_ANY_ID, dummy_func, {0,0,0}},
 474         {0x1106, 0x0686, PCI_ANY_ID, 1, VIA_ID, 0, mpc85xx_config_via, {0,0,0}},
 475         {0x1106, 0x0571, PCI_ANY_ID, 1, VIA_ID, 1,
 476                 mpc85xx_config_via_usbide, {0,0,0}},
 477         {0x1105, 0x3038, PCI_ANY_ID, 1, VIA_ID, 2,
 478                 mpc85xx_config_via_usb, {0,0,0}},
 479         {0x1106, 0x3038, PCI_ANY_ID, 1, VIA_ID, 3,
 480                 mpc85xx_config_via_usb2, {0,0,0}},
 481         {0x1106, 0x3058, PCI_ANY_ID, 1, VIA_ID, 5,
 482                 mpc85xx_config_via_power, {0,0,0}},
 483         {0x1106, 0x3068, PCI_ANY_ID, 1, VIA_ID, 6,
 484                 mpc85xx_config_via_ac97, {0,0,0}},
 485         {},
 486 };
 487
 488
 489 static struct pci_controller hose[] = {
 490         {
 491         config_table: pci_mpc85xxcds_config_table,
 492         },
 493 #ifdef CONFIG_MPC85XX_PCI2
 494         {},
 495 #endif
 496 };
 497
 498 #endif
 499
 500 void
 501 pci_init_board(void)
 502 {
 503 #ifdef CONFIG_PCI
 504         pci_mpc85xx_init(hose);
 505 #endif
 506 }
 507
 508 #if defined(CONFIG_OF_BOARD_SETUP)
 509 void
 510 ft_pci_setup(void *blob, bd_t *bd)
 511 {
 512         int node, tmp[2];
 513         const char *path;
 514
 515         node = fdt_path_offset(blob, "/aliases");
 516         tmp[0] = 0;
 517         if (node >= 0) {
 518 #ifdef CONFIG_PCI1
 519                 path = fdt_getprop(blob, node, "pci0", NULL);
 520                 if (path) {
 521                         tmp[1] = hose[0].last_busno - hose[0].first_busno;
 522                         do_fixup_by_path(blob, path, "bus-range", &tmp, 8, 1);
 523                 }
 524 #endif
 525 #ifdef CONFIG_MPC85XX_PCI2
 526                 path = fdt_getprop(blob, node, "pci1", NULL);
 527                 if (path) {
 528                         tmp[1] = hose[1].last_busno - hose[1].first_busno;
 529                         do_fixup_by_path(blob, path, "bus-range", &tmp, 8, 1);
 530                 }
 531 #endif
 532         }
 533 }
 534 #endif