board/amcc/yucca/yucca.c

   1 /*
   2  * (C) Copyright 2006
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  *
  23  * Port to AMCC-440SPE Evaluation Board SOP - April 2005
  24  *
  25  * PCIe supporting routines derived from Linux 440SPe PCIe driver.
  26  */
  27
  28 #include <common.h>
  29 #include <ppc4xx.h>
  30 #include <i2c.h>
  31 #include <asm/processor.h>
  32 #include <asm/io.h>
  33 #include <asm/4xx_pcie.h>
  34
  35 #include "yucca.h"
  36
  37 DECLARE_GLOBAL_DATA_PTR;
  38
  39 void fpga_init (void);
  40
  41 #define DEBUG_ENV
  42 #ifdef DEBUG_ENV
  43 #define DEBUGF(fmt,args...) printf(fmt ,##args)
  44 #else
  45 #define DEBUGF(fmt,args...)
  46 #endif
  47
  48 #define FALSE   0
  49 #define TRUE    1
  50
  51 int board_early_init_f (void)
  52 {
  53 /*----------------------------------------------------------------------------+
  54 | Define Boot devices
  55 +----------------------------------------------------------------------------*/
  56 #define BOOT_FROM_SMALL_FLASH           0x00
  57 #define BOOT_FROM_LARGE_FLASH_OR_SRAM   0x01
  58 #define BOOT_FROM_PCI                   0x02
  59 #define BOOT_DEVICE_UNKNOWN             0x03
  60
  61 /*----------------------------------------------------------------------------+
  62 | EBC Devices Characteristics
  63 |   Peripheral Bank Access Parameters       -   EBC_BxAP
  64 |   Peripheral Bank Configuration Register  -   EBC_BxCR
  65 +----------------------------------------------------------------------------*/
  66
  67 /*
  68  * Small Flash and FRAM
  69  * BU Value
  70  * BxAP : 0x03800000  - 0 00000111 0 00 00 00 00 00 000 0 0 0 0 00000
  71  * B0CR : 0xff098000  - BAS = ff0 - 100 11 00 0000000000000
  72  * B2CR : 0xe7098000  - BAS = e70 - 100 11 00 0000000000000
  73  */
  74 #define EBC_BXAP_SMALL_FLASH            EBC_BXAP_BME_DISABLED   | \
  75                                         EBC_BXAP_TWT_ENCODE(7)  | \
  76                                         EBC_BXAP_BCE_DISABLE    | \
  77                                         EBC_BXAP_BCT_2TRANS     | \
  78                                         EBC_BXAP_CSN_ENCODE(0)  | \
  79                                         EBC_BXAP_OEN_ENCODE(0)  | \
  80                                         EBC_BXAP_WBN_ENCODE(0)  | \
  81                                         EBC_BXAP_WBF_ENCODE(0)  | \
  82                                         EBC_BXAP_TH_ENCODE(0)   | \
  83                                         EBC_BXAP_RE_DISABLED    | \
  84                                         EBC_BXAP_SOR_DELAYED    | \
  85                                         EBC_BXAP_BEM_WRITEONLY  | \
  86                                         EBC_BXAP_PEN_DISABLED
  87
  88 #define EBC_BXCR_SMALL_FLASH_CS0        EBC_BXCR_BAS_ENCODE(0xFF000000) | \
  89                                         EBC_BXCR_BS_16MB                | \
  90                                         EBC_BXCR_BU_RW                  | \
  91                                         EBC_BXCR_BW_8BIT
  92
  93 #define EBC_BXCR_SMALL_FLASH_CS2        EBC_BXCR_BAS_ENCODE(0xe7000000) | \
  94                                         EBC_BXCR_BS_16MB                | \
  95                                         EBC_BXCR_BU_RW                  | \
  96                                         EBC_BXCR_BW_8BIT
  97
  98 /*
  99  * Large Flash and SRAM
 100  * BU Value
 101  * BxAP : 0x048ff240  - 0 00000111 0 00 00 00 00 00 000 0 0 0 0 00000
 102  * B0CR : 0xff09a000  - BAS = ff0 - 100 11 01 0000000000000
 103  * B2CR : 0xe709a000  - BAS = e70 - 100 11 01 0000000000000
 104 */
 105 #define EBC_BXAP_LARGE_FLASH            EBC_BXAP_BME_DISABLED   | \
 106                                         EBC_BXAP_TWT_ENCODE(7)  | \
 107                                         EBC_BXAP_BCE_DISABLE    | \
 108                                         EBC_BXAP_BCT_2TRANS     | \
 109                                         EBC_BXAP_CSN_ENCODE(0)  | \
 110                                         EBC_BXAP_OEN_ENCODE(0)  | \
 111                                         EBC_BXAP_WBN_ENCODE(0)  | \
 112                                         EBC_BXAP_WBF_ENCODE(0)  | \
 113                                         EBC_BXAP_TH_ENCODE(0)   | \
 114                                         EBC_BXAP_RE_DISABLED    | \
 115                                         EBC_BXAP_SOR_DELAYED    | \
 116                                         EBC_BXAP_BEM_WRITEONLY  | \
 117                                         EBC_BXAP_PEN_DISABLED
 118
 119 #define EBC_BXCR_LARGE_FLASH_CS0        EBC_BXCR_BAS_ENCODE(0xFF000000) | \
 120                                         EBC_BXCR_BS_16MB                | \
 121                                         EBC_BXCR_BU_RW                  | \
 122                                         EBC_BXCR_BW_16BIT
 123
 124 #define EBC_BXCR_LARGE_FLASH_CS2        EBC_BXCR_BAS_ENCODE(0xE7000000) | \
 125                                         EBC_BXCR_BS_16MB                | \
 126                                         EBC_BXCR_BU_RW                  | \
 127                                         EBC_BXCR_BW_16BIT
 128
 129 /*
 130  * FPGA
 131  * BU value :
 132  * B1AP = 0x05895240  - 0 00001011 0 00 10 01 01 01 001 0 0 1 0 00000
 133  * B1CR = 0xe201a000  - BAS = e20 - 000 11 01 00000000000000
 134  */
 135 #define EBC_BXAP_FPGA                   EBC_BXAP_BME_DISABLED   | \
 136                                         EBC_BXAP_TWT_ENCODE(11) | \
 137                                         EBC_BXAP_BCE_DISABLE    | \
 138                                         EBC_BXAP_BCT_2TRANS     | \
 139                                         EBC_BXAP_CSN_ENCODE(10) | \
 140                                         EBC_BXAP_OEN_ENCODE(1)  | \
 141                                         EBC_BXAP_WBN_ENCODE(1)  | \
 142                                         EBC_BXAP_WBF_ENCODE(1)  | \
 143                                         EBC_BXAP_TH_ENCODE(1)   | \
 144                                         EBC_BXAP_RE_DISABLED    | \
 145                                         EBC_BXAP_SOR_DELAYED    | \
 146                                         EBC_BXAP_BEM_RW         | \
 147                                         EBC_BXAP_PEN_DISABLED
 148
 149 #define EBC_BXCR_FPGA_CS1               EBC_BXCR_BAS_ENCODE(0xe2000000) | \
 150                                         EBC_BXCR_BS_1MB                 | \
 151                                         EBC_BXCR_BU_RW                  | \
 152                                         EBC_BXCR_BW_16BIT
 153
 154          unsigned long mfr;
 155         /*
 156          * Define Variables for EBC initialization depending on BOOTSTRAP option
 157          */
 158         unsigned long sdr0_pinstp, sdr0_sdstp1 ;
 159         unsigned long bootstrap_settings, ebc_data_width, boot_selection;
 160         int computed_boot_device = BOOT_DEVICE_UNKNOWN;
 161
 162         /*-------------------------------------------------------------------+
 163          | Initialize EBC CONFIG -
 164          | Keep the Default value, but the bit PDT which has to be set to 1 ?TBC
 165          | default value :
 166          |      0x07C00000 - 0 0 000 1 1 1 1 1 0000 0 00000 000000000000
 167          |
 168          +-------------------------------------------------------------------*/
 169         mtebc(xbcfg, EBC_CFG_LE_UNLOCK |
 170                         EBC_CFG_PTD_ENABLE |
 171                         EBC_CFG_RTC_16PERCLK |
 172                         EBC_CFG_ATC_PREVIOUS |
 173                         EBC_CFG_DTC_PREVIOUS |
 174                         EBC_CFG_CTC_PREVIOUS |
 175                         EBC_CFG_OEO_PREVIOUS |
 176                         EBC_CFG_EMC_DEFAULT |
 177                         EBC_CFG_PME_DISABLE |
 178                         EBC_CFG_PR_16);
 179
 180         /*-------------------------------------------------------------------+
 181          |
 182          |  PART 1 : Initialize EBC Bank 1
 183          |  ==============================
 184          | Bank1 is always associated to the EPLD.
 185          | It has to be initialized prior to other banks settings computation
 186          | since some board registers values may be needed to determine the
 187          | boot type
 188          |
 189          +-------------------------------------------------------------------*/
 190         mtebc(pb1ap, EBC_BXAP_FPGA);
 191         mtebc(pb1cr, EBC_BXCR_FPGA_CS1);
 192
 193         /*-------------------------------------------------------------------+
 194          |
 195          |  PART 2 : Determine which boot device was selected
 196          |  =================================================
 197          |
 198          |  Read Pin Strap Register in PPC440SPe
 199          |  Result can either be :
 200          |   - Boot strap = boot from EBC 8bits     => Small Flash
 201          |   - Boot strap = boot from PCI
 202          |   - Boot strap = IIC
 203          |  In case of boot from IIC, read Serial Device Strap Register1
 204          |
 205          |  Result can either be :
 206          |   - Boot from EBC  - EBC Bus Width = 8bits    => Small Flash
 207          |   - Boot from EBC  - EBC Bus Width = 16bits   => Large Flash or SRAM
 208          |   - Boot from PCI
 209          |
 210          +-------------------------------------------------------------------*/
 211         /* Read Pin Strap Register in PPC440SP */
 212         mfsdr(SDR0_PINSTP, sdr0_pinstp);
 213         bootstrap_settings = sdr0_pinstp & SDR0_PINSTP_BOOTSTRAP_MASK;
 214
 215         switch (bootstrap_settings) {
 216                 case SDR0_PINSTP_BOOTSTRAP_SETTINGS0:
 217                         /*
 218                          * Strapping Option A
 219                          * Boot from EBC - 8 bits , Small Flash
 220                          */
 221                         computed_boot_device = BOOT_FROM_SMALL_FLASH;
 222                         break;
 223                 case SDR0_PINSTP_BOOTSTRAP_SETTINGS1:
 224                         /*
 225                          * Strappping Option B
 226                          * Boot from PCI
 227                          */
 228                         computed_boot_device = BOOT_FROM_PCI;
 229                         break;
 230                 case SDR0_PINSTP_BOOTSTRAP_IIC_50_EN:
 231                 case SDR0_PINSTP_BOOTSTRAP_IIC_54_EN:
 232                         /*
 233                          * Strapping Option C or D
 234                          * Boot Settings in IIC EEprom address 0x50 or 0x54
 235                          * Read Serial Device Strap Register1 in PPC440SPe
 236                          */
 237                         mfsdr(SDR0_SDSTP1, sdr0_sdstp1);
 238                         boot_selection = sdr0_sdstp1 & SDR0_SDSTP1_ERPN_MASK;
 239                         ebc_data_width = sdr0_sdstp1 & SDR0_SDSTP1_EBCW_MASK;
 240
 241                         switch (boot_selection) {
 242                                 case SDR0_SDSTP1_ERPN_EBC:
 243                                         switch (ebc_data_width) {
 244                                                 case SDR0_SDSTP1_EBCW_16_BITS:
 245                                                         computed_boot_device =
 246                                                                 BOOT_FROM_LARGE_FLASH_OR_SRAM;
 247                                                         break;
 248                                                 case SDR0_SDSTP1_EBCW_8_BITS :
 249                                                         computed_boot_device = BOOT_FROM_SMALL_FLASH;
 250                                                         break;
 251                                         }
 252                                         break;
 253
 254                                 case SDR0_SDSTP1_ERPN_PCI:
 255                                         computed_boot_device = BOOT_FROM_PCI;
 256                                         break;
 257                                 default:
 258                                         /* should not occure */
 259                                         computed_boot_device = BOOT_DEVICE_UNKNOWN;
 260                         }
 261                         break;
 262                 default:
 263                         /* should not be */
 264                         computed_boot_device = BOOT_DEVICE_UNKNOWN;
 265                         break;
 266         }
 267
 268         /*-------------------------------------------------------------------+
 269          |
 270          |  PART 3 : Compute EBC settings depending on selected boot device
 271          |  ======   ======================================================
 272          |
 273          | Resulting EBC init will be among following configurations :
 274          |
 275          |  - Boot from EBC 8bits => boot from Small Flash selected
 276          |            EBC-CS0     = Small Flash
 277          |            EBC-CS2     = Large Flash and SRAM
 278          |
 279          |  - Boot from EBC 16bits => boot from Large Flash or SRAM
 280          |            EBC-CS0     = Large Flash or SRAM
 281          |            EBC-CS2     = Small Flash
 282          |
 283          |  - Boot from PCI
 284          |            EBC-CS0     = not initialized to avoid address contention
 285          |            EBC-CS2     = same as boot from Small Flash selected
 286          |
 287          +-------------------------------------------------------------------*/
 288         unsigned long ebc0_cs0_bxap_value = 0, ebc0_cs0_bxcr_value = 0;
 289         unsigned long ebc0_cs2_bxap_value = 0, ebc0_cs2_bxcr_value = 0;
 290
 291         switch (computed_boot_device) {
 292                 /*-------------------------------------------------------------------*/
 293                 case BOOT_FROM_PCI:
 294                 /*-------------------------------------------------------------------*/
 295                         /*
 296                          * By Default CS2 is affected to LARGE Flash
 297                          * do not initialize SMALL FLASH to avoid address contention
 298                          * Large Flash
 299                          */
 300                         ebc0_cs2_bxap_value = EBC_BXAP_LARGE_FLASH;
 301                         ebc0_cs2_bxcr_value = EBC_BXCR_LARGE_FLASH_CS2;
 302                         break;
 303
 304                 /*-------------------------------------------------------------------*/
 305                 case BOOT_FROM_SMALL_FLASH:
 306                 /*-------------------------------------------------------------------*/
 307                         ebc0_cs0_bxap_value = EBC_BXAP_SMALL_FLASH;
 308                         ebc0_cs0_bxcr_value = EBC_BXCR_SMALL_FLASH_CS0;
 309
 310                         /*
 311                          * Large Flash or SRAM
 312                          */
 313                         /* ebc0_cs2_bxap_value = EBC_BXAP_LARGE_FLASH; */
 314                         ebc0_cs2_bxap_value = 0x048ff240;
 315                         ebc0_cs2_bxcr_value = EBC_BXCR_LARGE_FLASH_CS2;
 316                         break;
 317
 318                 /*-------------------------------------------------------------------*/
 319                 case BOOT_FROM_LARGE_FLASH_OR_SRAM:
 320                 /*-------------------------------------------------------------------*/
 321                         ebc0_cs0_bxap_value = EBC_BXAP_LARGE_FLASH;
 322                         ebc0_cs0_bxcr_value = EBC_BXCR_LARGE_FLASH_CS0;
 323
 324                         /* Small flash */
 325                         ebc0_cs2_bxap_value = EBC_BXAP_SMALL_FLASH;
 326                         ebc0_cs2_bxcr_value = EBC_BXCR_SMALL_FLASH_CS2;
 327                         break;
 328
 329                 /*-------------------------------------------------------------------*/
 330                 default:
 331                 /*-------------------------------------------------------------------*/
 332                         /* BOOT_DEVICE_UNKNOWN */
 333                         break;
 334         }
 335
 336         mtebc(pb0ap, ebc0_cs0_bxap_value);
 337         mtebc(pb0cr, ebc0_cs0_bxcr_value);
 338         mtebc(pb2ap, ebc0_cs2_bxap_value);
 339         mtebc(pb2cr, ebc0_cs2_bxcr_value);
 340
 341         /*--------------------------------------------------------------------+
 342          | Interrupt controller setup for the AMCC 440SPe Evaluation board.
 343          +--------------------------------------------------------------------+
 344         +---------------------------------------------------------------------+
 345         |Interrupt| Source                            | Pol.  | Sensi.| Crit. |
 346         +---------+-----------------------------------+-------+-------+-------+
 347         | IRQ 00  | UART0                             | High  | Level | Non   |
 348         | IRQ 01  | UART1                             | High  | Level | Non   |
 349         | IRQ 02  | IIC0                              | High  | Level | Non   |
 350         | IRQ 03  | IIC1                              | High  | Level | Non   |
 351         | IRQ 04  | PCI0X0 MSG IN                     | High  | Level | Non   |
 352         | IRQ 05  | PCI0X0 CMD Write                  | High  | Level | Non   |
 353         | IRQ 06  | PCI0X0 Power Mgt                  | High  | Level | Non   |
 354         | IRQ 07  | PCI0X0 VPD Access                 | Rising| Edge  | Non   |
 355         | IRQ 08  | PCI0X0 MSI level 0                | High  | Lvl/ed| Non   |
 356         | IRQ 09  | External IRQ 15 - (PCI-Express)   | pgm H | Pgm   | Non   |
 357         | IRQ 10  | UIC2 Non-critical Int.            | NA    | NA    | Non   |
 358         | IRQ 11  | UIC2 Critical Interrupt           | NA    | NA    | Crit  |
 359         | IRQ 12  | PCI Express MSI Level 0           | Rising| Edge  | Non   |
 360         | IRQ 13  | PCI Express MSI Level 1           | Rising| Edge  | Non   |
 361         | IRQ 14  | PCI Express MSI Level 2           | Rising| Edge  | Non   |
 362         | IRQ 15  | PCI Express MSI Level 3           | Rising| Edge  | Non   |
 363         | IRQ 16  | UIC3 Non-critical Int.            | NA    | NA    | Non   |
 364         | IRQ 17  | UIC3 Critical Interrupt           | NA    | NA    | Crit  |
 365         | IRQ 18  | External IRQ 14 - (PCI-Express)   | Pgm   | Pgm   | Non   |
 366         | IRQ 19  | DMA Channel 0 FIFO Full           | High  | Level | Non   |
 367         | IRQ 20  | DMA Channel 0 Stat FIFO           | High  | Level | Non   |
 368         | IRQ 21  | DMA Channel 1 FIFO Full           | High  | Level | Non   |
 369         | IRQ 22  | DMA Channel 1 Stat FIFO           | High  | Level | Non   |
 370         | IRQ 23  | I2O Inbound Doorbell              | High  | Level | Non   |
 371         | IRQ 24  | Inbound Post List FIFO Not Empt   | High  | Level | Non   |
 372         | IRQ 25  | I2O Region 0 LL PLB Write         | High  | Level | Non   |
 373         | IRQ 26  | I2O Region 1 LL PLB Write         | High  | Level | Non   |
 374         | IRQ 27  | I2O Region 0 HB PLB Write         | High  | Level | Non   |
 375         | IRQ 28  | I2O Region 1 HB PLB Write         | High  | Level | Non   |
 376         | IRQ 29  | GPT Down Count Timer              | Rising| Edge  | Non   |
 377         | IRQ 30  | UIC1 Non-critical Int.            | NA    | NA    | Non   |
 378         | IRQ 31  | UIC1 Critical Interrupt           | NA    | NA    | Crit. |
 379         |----------------------------------------------------------------------
 380         | IRQ 32  | Ext. IRQ 13 - (PCI-Express)       |pgm (H)|pgm/Lvl| Non   |
 381         | IRQ 33  | MAL Serr                          | High  | Level | Non   |
 382         | IRQ 34  | MAL Txde                          | High  | Level | Non   |
 383         | IRQ 35  | MAL Rxde                          | High  | Level | Non   |
 384         | IRQ 36  | DMC CE or DMC UE                  | High  | Level | Non   |
 385         | IRQ 37  | EBC or UART2                      | High  |Lvl Edg| Non   |
 386         | IRQ 38  | MAL TX EOB                        | High  | Level | Non   |
 387         | IRQ 39  | MAL RX EOB                        | High  | Level | Non   |
 388         | IRQ 40  | PCIX0 MSI Level 1                 | High  |Lvl Edg| Non   |
 389         | IRQ 41  | PCIX0 MSI level 2                 | High  |Lvl Edg| Non   |
 390         | IRQ 42  | PCIX0 MSI level 3                 | High  |Lvl Edg| Non   |
 391         | IRQ 43  | L2 Cache                          | Risin | Edge  | Non   |
 392         | IRQ 44  | GPT Compare Timer 0               | Risin | Edge  | Non   |
 393         | IRQ 45  | GPT Compare Timer 1               | Risin | Edge  | Non   |
 394         | IRQ 46  | GPT Compare Timer 2               | Risin | Edge  | Non   |
 395         | IRQ 47  | GPT Compare Timer 3               | Risin | Edge  | Non   |
 396         | IRQ 48  | GPT Compare Timer 4               | Risin | Edge  | Non   |
 397         | IRQ 49  | Ext. IRQ 12 - PCI-X               |pgm/Fal|pgm/Lvl| Non   |
 398         | IRQ 50  | Ext. IRQ 11 -                     |pgm (H)|pgm/Lvl| Non   |
 399         | IRQ 51  | Ext. IRQ 10 -                     |pgm (H)|pgm/Lvl| Non   |
 400         | IRQ 52  | Ext. IRQ 9                        |pgm (H)|pgm/Lvl| Non   |
 401         | IRQ 53  | Ext. IRQ 8                        |pgm (H)|pgm/Lvl| Non   |
 402         | IRQ 54  | DMA Error                         | High  | Level | Non   |
 403         | IRQ 55  | DMA I2O Error                     | High  | Level | Non   |
 404         | IRQ 56  | Serial ROM                        | High  | Level | Non   |
 405         | IRQ 57  | PCIX0 Error                       | High  | Edge  | Non   |
 406         | IRQ 58  | Ext. IRQ 7-                       |pgm (H)|pgm/Lvl| Non   |
 407         | IRQ 59  | Ext. IRQ 6-                       |pgm (H)|pgm/Lvl| Non   |
 408         | IRQ 60  | EMAC0 Interrupt                   | High  | Level | Non   |
 409         | IRQ 61  | EMAC0 Wake-up                     | High  | Level | Non   |
 410         | IRQ 62  | Reserved                          | High  | Level | Non   |
 411         | IRQ 63  | XOR                               | High  | Level | Non   |
 412         |----------------------------------------------------------------------
 413         | IRQ 64  | PE0 AL                            | High  | Level | Non   |
 414         | IRQ 65  | PE0 VPD Access                    | Risin | Edge  | Non   |
 415         | IRQ 66  | PE0 Hot Reset Request             | Risin | Edge  | Non   |
 416         | IRQ 67  | PE0 Hot Reset Request             | Falli | Edge  | Non   |
 417         | IRQ 68  | PE0 TCR                           | High  | Level | Non   |
 418         | IRQ 69  | PE0 BusMaster VCO                 | Falli | Edge  | Non   |
 419         | IRQ 70  | PE0 DCR Error                     | High  | Level | Non   |
 420         | IRQ 71  | Reserved                          | N/A   | N/A   | Non   |
 421         | IRQ 72  | PE1 AL                            | High  | Level | Non   |
 422         | IRQ 73  | PE1 VPD Access                    | Risin | Edge  | Non   |
 423         | IRQ 74  | PE1 Hot Reset Request             | Risin | Edge  | Non   |
 424         | IRQ 75  | PE1 Hot Reset Request             | Falli | Edge  | Non   |
 425         | IRQ 76  | PE1 TCR                           | High  | Level | Non   |
 426         | IRQ 77  | PE1 BusMaster VCO                 | Falli | Edge  | Non   |
 427         | IRQ 78  | PE1 DCR Error                     | High  | Level | Non   |
 428         | IRQ 79  | Reserved                          | N/A   | N/A   | Non   |
 429         | IRQ 80  | PE2 AL                            | High  | Level | Non   |
 430         | IRQ 81  | PE2 VPD Access                    | Risin | Edge  | Non   |
 431         | IRQ 82  | PE2 Hot Reset Request             | Risin | Edge  | Non   |
 432         | IRQ 83  | PE2 Hot Reset Request             | Falli | Edge  | Non   |
 433         | IRQ 84  | PE2 TCR                           | High  | Level | Non   |
 434         | IRQ 85  | PE2 BusMaster VCO                 | Falli | Edge  | Non   |
 435         | IRQ 86  | PE2 DCR Error                     | High  | Level | Non   |
 436         | IRQ 87  | Reserved                          | N/A   | N/A   | Non   |
 437         | IRQ 88  | External IRQ(5)                   | Progr | Progr | Non   |
 438         | IRQ 89  | External IRQ 4 - Ethernet         | Progr | Progr | Non   |
 439         | IRQ 90  | External IRQ 3 - PCI-X            | Progr | Progr | Non   |
 440         | IRQ 91  | External IRQ 2 - PCI-X            | Progr | Progr | Non   |
 441         | IRQ 92  | External IRQ 1 - PCI-X            | Progr | Progr | Non   |
 442         | IRQ 93  | External IRQ 0 - PCI-X            | Progr | Progr | Non   |
 443         | IRQ 94  | Reserved                          | N/A   | N/A   | Non   |
 444         | IRQ 95  | Reserved                          | N/A   | N/A   | Non   |
 445         |---------------------------------------------------------------------
 446         | IRQ 96  | PE0 INTA                          | High  | Level | Non   |
 447         | IRQ 97  | PE0 INTB                          | High  | Level | Non   |
 448         | IRQ 98  | PE0 INTC                          | High  | Level | Non   |
 449         | IRQ 99  | PE0 INTD                          | High  | Level | Non   |
 450         | IRQ 100 | PE1 INTA                          | High  | Level | Non   |
 451         | IRQ 101 | PE1 INTB                          | High  | Level | Non   |
 452         | IRQ 102 | PE1 INTC                          | High  | Level | Non   |
 453         | IRQ 103 | PE1 INTD                          | High  | Level | Non   |
 454         | IRQ 104 | PE2 INTA                          | High  | Level | Non   |
 455         | IRQ 105 | PE2 INTB                          | High  | Level | Non   |
 456         | IRQ 106 | PE2 INTC                          | High  | Level | Non   |
 457         | IRQ 107 | PE2 INTD                          | Risin | Edge  | Non   |
 458         | IRQ 108 | PCI Express MSI Level 4           | Risin | Edge  | Non   |
 459         | IRQ 109 | PCI Express MSI Level 5           | Risin | Edge  | Non   |
 460         | IRQ 110 | PCI Express MSI Level 6           | Risin | Edge  | Non   |
 461         | IRQ 111 | PCI Express MSI Level 7           | Risin | Edge  | Non   |
 462         | IRQ 116 | PCI Express MSI Level 12          | Risin | Edge  | Non   |
 463         | IRQ 112 | PCI Express MSI Level 8           | Risin | Edge  | Non   |
 464         | IRQ 113 | PCI Express MSI Level 9           | Risin | Edge  | Non   |
 465         | IRQ 114 | PCI Express MSI Level 10          | Risin | Edge  | Non   |
 466         | IRQ 115 | PCI Express MSI Level 11          | Risin | Edge  | Non   |
 467         | IRQ 117 | PCI Express MSI Level 13          | Risin | Edge  | Non   |
 468         | IRQ 118 | PCI Express MSI Level 14          | Risin | Edge  | Non   |
 469         | IRQ 119 | PCI Express MSI Level 15          | Risin | Edge  | Non   |
 470         | IRQ 120 | PCI Express MSI Level 16          | Risin | Edge  | Non   |
 471         | IRQ 121 | PCI Express MSI Level 17          | Risin | Edge  | Non   |
 472         | IRQ 122 | PCI Express MSI Level 18          | Risin | Edge  | Non   |
 473         | IRQ 123 | PCI Express MSI Level 19          | Risin | Edge  | Non   |
 474         | IRQ 124 | PCI Express MSI Level 20          | Risin | Edge  | Non   |
 475         | IRQ 125 | PCI Express MSI Level 21          | Risin | Edge  | Non   |
 476         | IRQ 126 | PCI Express MSI Level 22          | Risin | Edge  | Non   |
 477         | IRQ 127 | PCI Express MSI Level 23          | Risin | Edge  | Non   |
 478         +---------+-----------------------------------+-------+-------+------*/
 479         /*--------------------------------------------------------------------+
 480          | Put UICs in PowerPC440SPemode.
 481          | Initialise UIC registers.  Clear all interrupts.  Disable all
 482          | interrupts.
 483          | Set critical interrupt values.  Set interrupt polarities.  Set
 484          | interrupt trigger levels.  Make bit 0 High  priority.  Clear all
 485          | interrupts again.
 486          +-------------------------------------------------------------------*/
 487         mtdcr (uic3sr, 0xffffffff);     /* Clear all interrupts */
 488         mtdcr (uic3er, 0x00000000);     /* disable all interrupts */
 489         mtdcr (uic3cr, 0x00000000);     /* Set Critical / Non Critical
 490                                          * interrupts */
 491         mtdcr (uic3pr, 0xffffffff);     /* Set Interrupt Polarities */
 492         mtdcr (uic3tr, 0x001fffff);     /* Set Interrupt Trigger Levels */
 493         mtdcr (uic3vr, 0x00000001);     /* Set Vect base=0,INT31 Highest
 494                                          * priority */
 495         mtdcr (uic3sr, 0x00000000);     /* clear all  interrupts */
 496         mtdcr (uic3sr, 0xffffffff);     /* clear all  interrupts */
 497
 498         mtdcr (uic2sr, 0xffffffff);     /* Clear all interrupts */
 499         mtdcr (uic2er, 0x00000000);     /* disable all interrupts */
 500         mtdcr (uic2cr, 0x00000000);     /* Set Critical / Non Critical
 501                                          * interrupts */
 502         mtdcr (uic2pr, 0xebebebff);     /* Set Interrupt Polarities */
 503         mtdcr (uic2tr, 0x74747400);     /* Set Interrupt Trigger Levels */
 504         mtdcr (uic2vr, 0x00000001);     /* Set Vect base=0,INT31 Highest
 505                                          * priority */
 506         mtdcr (uic2sr, 0x00000000);     /* clear all interrupts */
 507         mtdcr (uic2sr, 0xffffffff);     /* clear all interrupts */
 508
 509         mtdcr (uic1sr, 0xffffffff);     /* Clear all interrupts */
 510         mtdcr (uic1er, 0x00000000);     /* disable all interrupts */
 511         mtdcr (uic1cr, 0x00000000);     /* Set Critical / Non Critical
 512                                          * interrupts */
 513         mtdcr (uic1pr, 0xffffffff);     /* Set Interrupt Polarities */
 514         mtdcr (uic1tr, 0x001f8040);     /* Set Interrupt Trigger Levels */
 515         mtdcr (uic1vr, 0x00000001);     /* Set Vect base=0,INT31 Highest
 516                                          * priority */
 517         mtdcr (uic1sr, 0x00000000);     /* clear all interrupts */
 518         mtdcr (uic1sr, 0xffffffff);     /* clear all interrupts */
 519
 520         mtdcr (uic0sr, 0xffffffff);     /* Clear all interrupts */
 521         mtdcr (uic0er, 0x00000000);     /* disable all interrupts excepted
 522                                          * cascade to be checked */
 523         mtdcr (uic0cr, 0x00104001);     /* Set Critical / Non Critical
 524                                          * interrupts */
 525         mtdcr (uic0pr, 0xffffffff);     /* Set Interrupt Polarities */
 526         mtdcr (uic0tr, 0x010f0004);     /* Set Interrupt Trigger Levels */
 527         mtdcr (uic0vr, 0x00000001);     /* Set Vect base=0,INT31 Highest
 528                                          * priority */
 529         mtdcr (uic0sr, 0x00000000);     /* clear all interrupts */
 530         mtdcr (uic0sr, 0xffffffff);     /* clear all interrupts */
 531
 532         mfsdr(sdr_mfr, mfr);
 533         mfr |= SDR0_MFR_FIXD;           /* Workaround for PCI/DMA */
 534         mtsdr(sdr_mfr, mfr);
 535
 536         fpga_init();
 537
 538         return 0;
 539 }
 540
 541 int checkboard (void)
 542 {
 543         char *s = getenv("serial#");
 544
 545         printf("Board: Yucca - AMCC 440SPe Evaluation Board");
 546         if (s != NULL) {
 547                 puts(", serial# ");
 548                 puts(s);
 549         }
 550         putc('\n');
 551
 552         return 0;
 553 }
 554
 555 /*
 556  * Override the default functions in cpu/ppc4xx/44x_spd_ddr2.c with
 557  * board specific values.
 558  */
 559 static int ppc440spe_rev_a(void)
 560 {
 561         if ((get_pvr() == PVR_440SPe_6_RA) || (get_pvr() == PVR_440SPe_RA))
 562                 return 1;
 563         else
 564                 return 0;
 565 }
 566
 567 u32 ddr_wrdtr(u32 default_val) {
 568         /*
 569          * Yucca boards with 440SPe rev. A need a slightly different setup
 570          * for the MCIF0_WRDTR register.
 571          */
 572         if (ppc440spe_rev_a())
 573                 return (SDRAM_WRDTR_LLWP_1_CYC | SDRAM_WRDTR_WTR_270_DEG_ADV);
 574
 575         return default_val;
 576 }
 577
 578 u32 ddr_clktr(u32 default_val) {
 579         /*
 580          * Yucca boards with 440SPe rev. A need a slightly different setup
 581          * for the MCIF0_CLKTR register.
 582          */
 583         if (ppc440spe_rev_a())
 584                 return (SDRAM_CLKTR_CLKP_180_DEG_ADV);
 585
 586         return default_val;
 587 }
 588
 589 /*************************************************************************
 590  *  pci_pre_init
 591  *
 592  *  This routine is called just prior to registering the hose and gives
 593  *  the board the opportunity to check things. Returning a value of zero
 594  *  indicates that things are bad & PCI initialization should be aborted.
 595  *
 596  *      Different boards may wish to customize the pci controller structure
 597  *      (add regions, override default access routines, etc) or perform
 598  *      certain pre-initialization actions.
 599  *
 600  ************************************************************************/
 601 #if defined(CONFIG_PCI)
 602 int pci_pre_init(struct pci_controller * hose )
 603 {
 604         unsigned long strap;
 605
 606         /*-------------------------------------------------------------------+
 607          *      The yucca board is always configured as the host & requires the
 608          *      PCI arbiter to be enabled.
 609          *-------------------------------------------------------------------*/
 610         mfsdr(sdr_sdstp1, strap);
 611         if( (strap & SDR0_SDSTP1_PAE_MASK) == 0 ) {
 612                 printf("PCI: SDR0_STRP1[%08lX] - PCI Arbiter disabled.\n",strap);
 613                 return 0;
 614         }
 615
 616         return 1;
 617 }
 618 #endif  /* defined(CONFIG_PCI) */
 619
 620 /*************************************************************************
 621  *  pci_target_init
 622  *
 623  *      The bootstrap configuration provides default settings for the pci
 624  *      inbound map (PIM). But the bootstrap config choices are limited and
 625  *      may not be sufficient for a given board.
 626  *
 627  ************************************************************************/
 628 #if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
 629 void pci_target_init(struct pci_controller * hose )
 630 {
 631         /*-------------------------------------------------------------------+
 632          * Disable everything
 633          *-------------------------------------------------------------------*/
 634         out32r( PCIX0_PIM0SA, 0 ); /* disable */
 635         out32r( PCIX0_PIM1SA, 0 ); /* disable */
 636         out32r( PCIX0_PIM2SA, 0 ); /* disable */
 637         out32r( PCIX0_EROMBA, 0 ); /* disable expansion rom */
 638
 639         /*-------------------------------------------------------------------+
 640          * Map all of SDRAM to PCI address 0x0000_0000. Note that the 440
 641          * strapping options to not support sizes such as 128/256 MB.
 642          *-------------------------------------------------------------------*/
 643         out32r( PCIX0_PIM0LAL, CFG_SDRAM_BASE );
 644         out32r( PCIX0_PIM0LAH, 0 );
 645         out32r( PCIX0_PIM0SA, ~(gd->ram_size - 1) | 1 );
 646         out32r( PCIX0_BAR0, 0 );
 647
 648         /*-------------------------------------------------------------------+
 649          * Program the board's subsystem id/vendor id
 650          *-------------------------------------------------------------------*/
 651         out16r( PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID );
 652         out16r( PCIX0_SBSYSID, CFG_PCI_SUBSYS_DEVICEID );
 653
 654         out16r( PCIX0_CMD, in16r(PCIX0_CMD) | PCI_COMMAND_MEMORY );
 655 }
 656 #endif  /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */
 657
 658 #if defined(CONFIG_PCI)
 659 /*************************************************************************
 660  *  is_pci_host
 661  *
 662  *      This routine is called to determine if a pci scan should be
 663  *      performed. With various hardware environments (especially cPCI and
 664  *      PPMC) it's insufficient to depend on the state of the arbiter enable
 665  *      bit in the strap register, or generic host/adapter assumptions.
 666  *
 667  *      Rather than hard-code a bad assumption in the general 440 code, the
 668  *      440 pci code requires the board to decide at runtime.
 669  *
 670  *      Return 0 for adapter mode, non-zero for host (monarch) mode.
 671  *
 672  *
 673  ************************************************************************/
 674 int is_pci_host(struct pci_controller *hose)
 675 {
 676         /* The yucca board is always configured as host. */
 677         return 1;
 678 }
 679
 680 static int yucca_pcie_card_present(int port)
 681 {
 682         u16 reg;
 683
 684         reg = in_be16((u16 *)FPGA_REG1C);
 685         switch(port) {
 686         case 0:
 687                 return !(reg & FPGA_REG1C_PE0_PRSNT);
 688         case 1:
 689                 return !(reg & FPGA_REG1C_PE1_PRSNT);
 690         case 2:
 691                 return !(reg & FPGA_REG1C_PE2_PRSNT);
 692         default:
 693                 return 0;
 694         }
 695 }
 696
 697 /*
 698  * For the given slot, set rootpoint mode, send power to the slot,
 699  * turn on the green LED and turn off the yellow LED, enable the clock
 700  * and turn off reset.
 701  */
 702 void yucca_setup_pcie_fpga_rootpoint(int port)
 703 {
 704         u16 power, clock, green_led, yellow_led, reset_off, rootpoint, endpoint;
 705
 706         switch(port) {
 707         case 0:
 708                 rootpoint   = FPGA_REG1C_PE0_ROOTPOINT;
 709                 endpoint    = 0;
 710                 power       = FPGA_REG1A_PE0_PWRON;
 711                 green_led   = FPGA_REG1A_PE0_GLED;
 712                 clock       = FPGA_REG1A_PE0_REFCLK_ENABLE;
 713                 yellow_led  = FPGA_REG1A_PE0_YLED;
 714                 reset_off   = FPGA_REG1C_PE0_PERST;
 715                 break;
 716         case 1:
 717                 rootpoint   = 0;
 718                 endpoint    = FPGA_REG1C_PE1_ENDPOINT;
 719                 power       = FPGA_REG1A_PE1_PWRON;
 720                 green_led   = FPGA_REG1A_PE1_GLED;
 721                 clock       = FPGA_REG1A_PE1_REFCLK_ENABLE;
 722                 yellow_led  = FPGA_REG1A_PE1_YLED;
 723                 reset_off   = FPGA_REG1C_PE1_PERST;
 724                 break;
 725         case 2:
 726                 rootpoint   = 0;
 727                 endpoint    = FPGA_REG1C_PE2_ENDPOINT;
 728                 power       = FPGA_REG1A_PE2_PWRON;
 729                 green_led   = FPGA_REG1A_PE2_GLED;
 730                 clock       = FPGA_REG1A_PE2_REFCLK_ENABLE;
 731                 yellow_led  = FPGA_REG1A_PE2_YLED;
 732                 reset_off   = FPGA_REG1C_PE2_PERST;
 733                 break;
 734
 735         default:
 736                 return;
 737         }
 738
 739         out_be16((u16 *)FPGA_REG1A,
 740                  ~(power | clock | green_led) &
 741                  (yellow_led | in_be16((u16 *)FPGA_REG1A)));
 742
 743         out_be16((u16 *)FPGA_REG1C,
 744                  ~(endpoint | reset_off) &
 745                  (rootpoint | in_be16((u16 *)FPGA_REG1C)));
 746         /*
 747          * Leave device in reset for a while after powering on the
 748          * slot to give it a chance to initialize.
 749          */
 750         udelay(250 * 1000);
 751
 752         out_be16((u16 *)FPGA_REG1C, reset_off | in_be16((u16 *)FPGA_REG1C));
 753 }
 754 /*
 755  * For the given slot, set endpoint mode, send power to the slot,
 756  * turn on the green LED and turn off the yellow LED, enable the clock
 757  * .In end point mode reset bit is  read only.
 758  */
 759 void yucca_setup_pcie_fpga_endpoint(int port)
 760 {
 761         u16 power, clock, green_led, yellow_led, reset_off, rootpoint, endpoint;
 762
 763         switch(port) {
 764         case 0:
 765                 rootpoint   = FPGA_REG1C_PE0_ROOTPOINT;
 766                 endpoint    = 0;
 767                 power       = FPGA_REG1A_PE0_PWRON;
 768                 green_led   = FPGA_REG1A_PE0_GLED;
 769                 clock       = FPGA_REG1A_PE0_REFCLK_ENABLE;
 770                 yellow_led  = FPGA_REG1A_PE0_YLED;
 771                 reset_off   = FPGA_REG1C_PE0_PERST;
 772                 break;
 773         case 1:
 774                 rootpoint   = 0;
 775                 endpoint    = FPGA_REG1C_PE1_ENDPOINT;
 776                 power       = FPGA_REG1A_PE1_PWRON;
 777                 green_led   = FPGA_REG1A_PE1_GLED;
 778                 clock       = FPGA_REG1A_PE1_REFCLK_ENABLE;
 779                 yellow_led  = FPGA_REG1A_PE1_YLED;
 780                 reset_off   = FPGA_REG1C_PE1_PERST;
 781                 break;
 782         case 2:
 783                 rootpoint   = 0;
 784                 endpoint    = FPGA_REG1C_PE2_ENDPOINT;
 785                 power       = FPGA_REG1A_PE2_PWRON;
 786                 green_led   = FPGA_REG1A_PE2_GLED;
 787                 clock       = FPGA_REG1A_PE2_REFCLK_ENABLE;
 788                 yellow_led  = FPGA_REG1A_PE2_YLED;
 789                 reset_off   = FPGA_REG1C_PE2_PERST;
 790                 break;
 791
 792         default:
 793                 return;
 794         }
 795
 796         out_be16((u16 *)FPGA_REG1A,
 797                  ~(power | clock | green_led) &
 798                  (yellow_led | in_be16((u16 *)FPGA_REG1A)));
 799
 800         out_be16((u16 *)FPGA_REG1C,
 801                  ~(rootpoint | reset_off) &
 802                  (endpoint | in_be16((u16 *)FPGA_REG1C)));
 803 }
 804
 805 static struct pci_controller pcie_hose[3] = {{0},{0},{0}};
 806
 807 void pcie_setup_hoses(int busno)
 808 {
 809         struct pci_controller *hose;
 810         int i, bus;
 811         int ret = 0;
 812         char *env;
 813         unsigned int delay;
 814
 815         /*
 816          * assume we're called after the PCIX hose is initialized, which takes
 817          * bus ID 0 and therefore start numbering PCIe's from 1.
 818          */
 819         bus = busno;
 820         for (i = 0; i <= 2; i++) {
 821                 /* Check for yucca card presence */
 822                 if (!yucca_pcie_card_present(i))
 823                         continue;
 824
 825                 if (is_end_point(i)) {
 826                         yucca_setup_pcie_fpga_endpoint(i);
 827                         ret = ppc4xx_init_pcie_endport(i);
 828                 } else {
 829                         yucca_setup_pcie_fpga_rootpoint(i);
 830                         ret = ppc4xx_init_pcie_rootport(i);
 831                 }
 832                 if (ret) {
 833                         printf("PCIE%d: initialization as %s failed\n", i,
 834                                is_end_point(i) ? "endpoint" : "root-complex");
 835                         continue;
 836                 }
 837
 838                 hose = &pcie_hose[i];
 839                 hose->first_busno = bus;
 840                 hose->last_busno = bus;
 841                 hose->current_busno = bus;
 842
 843                 /* setup mem resource */
 844                 pci_set_region(hose->regions + 0,
 845                         CFG_PCIE_MEMBASE + i * CFG_PCIE_MEMSIZE,
 846                         CFG_PCIE_MEMBASE + i * CFG_PCIE_MEMSIZE,
 847                         CFG_PCIE_MEMSIZE,
 848                         PCI_REGION_MEM);
 849                 hose->region_count = 1;
 850                 pci_register_hose(hose);
 851
 852                 if (is_end_point(i)) {
 853                         ppc4xx_setup_pcie_endpoint(hose, i);
 854                         /*
 855                          * Reson for no scanning is endpoint can not generate
 856                          * upstream configuration accesses.
 857                          */
 858                 } else {
 859                         ppc4xx_setup_pcie_rootpoint(hose, i);
 860                         env = getenv("pciscandelay");
 861                         if (env != NULL) {
 862                                 delay = simple_strtoul(env, NULL, 10);
 863                                 if (delay > 5)
 864                                         printf("Warning, expect noticable delay before "
 865                                                "PCIe scan due to 'pciscandelay' value!\n");
 866                                 mdelay(delay * 1000);
 867                         }
 868
 869                         /*
 870                          * Config access can only go down stream
 871                          */
 872                         hose->last_busno = pci_hose_scan(hose);
 873                         bus = hose->last_busno + 1;
 874                 }
 875         }
 876 }
 877 #endif  /* defined(CONFIG_PCI) */
 878
 879 int misc_init_f (void)
 880 {
 881         uint reg;
 882
 883         out16(FPGA_REG10, (in16(FPGA_REG10) &
 884                         ~(FPGA_REG10_AUTO_NEG_DIS|FPGA_REG10_RESET_ETH)) |
 885                                 FPGA_REG10_10MHZ_ENABLE |
 886                                 FPGA_REG10_100MHZ_ENABLE |
 887                                 FPGA_REG10_GIGABIT_ENABLE |
 888                                 FPGA_REG10_FULL_DUPLEX );
 889
 890         udelay(10000);  /* wait 10ms */
 891
 892         out16(FPGA_REG10, (in16(FPGA_REG10) | FPGA_REG10_RESET_ETH));
 893
 894         /* minimal init for PCIe */
 895         /* pci express 0 Endpoint Mode */
 896         mfsdr(SDRN_PESDR_DLPSET(0), reg);
 897         reg &= (~0x00400000);
 898         mtsdr(SDRN_PESDR_DLPSET(0), reg);
 899         /* pci express 1 Rootpoint  Mode */
 900         mfsdr(SDRN_PESDR_DLPSET(1), reg);
 901         reg |= 0x00400000;
 902         mtsdr(SDRN_PESDR_DLPSET(1), reg);
 903         /* pci express 2 Rootpoint  Mode */
 904         mfsdr(SDRN_PESDR_DLPSET(2), reg);
 905         reg |= 0x00400000;
 906         mtsdr(SDRN_PESDR_DLPSET(2), reg);
 907
 908         out16(FPGA_REG1C,(in16 (FPGA_REG1C) &
 909                                 ~FPGA_REG1C_PE0_ROOTPOINT &
 910                                 ~FPGA_REG1C_PE1_ENDPOINT  &
 911                                 ~FPGA_REG1C_PE2_ENDPOINT));
 912
 913         return 0;
 914 }
 915
 916 void fpga_init(void)
 917 {
 918         /*
 919          * by default sdram access is disabled by fpga
 920          */
 921         out16(FPGA_REG10, (in16 (FPGA_REG10) |
 922                                 FPGA_REG10_SDRAM_ENABLE |
 923                                 FPGA_REG10_ENABLE_DISPLAY ));
 924
 925         return;
 926 }
 927
 928 #ifdef CONFIG_POST
 929 /*
 930  * Returns 1 if keys pressed to start the power-on long-running tests
 931  * Called from board_init_f().
 932  */
 933 int post_hotkeys_pressed(void)
 934 {
 935         return (ctrlc());
 936 }
 937 #endif
 938
 939 /*---------------------------------------------------------------------------+
 940  | onboard_pci_arbiter_selected => from EPLD
 941  +---------------------------------------------------------------------------*/
 942 int onboard_pci_arbiter_selected(int core_pci)
 943 {
 944 #if 0
 945         unsigned long onboard_pci_arbiter_sel;
 946
 947         onboard_pci_arbiter_sel = in16(FPGA_REG0) & FPGA_REG0_EXT_ARB_SEL_MASK;
 948
 949         if (onboard_pci_arbiter_sel == FPGA_REG0_EXT_ARB_SEL_EXTERNAL)
 950                 return (BOARD_OPTION_SELECTED);
 951         else
 952 #endif
 953         return (BOARD_OPTION_NOT_SELECTED);
 954 }