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
  26 #include <common.h>
  27 #include <ppc4xx.h>
  28 #include <asm/processor.h>
  29 #include <i2c.h>
  30 #include "yucca.h"
  31
  32 void fpga_init (void);
  33
  34 void get_sys_info(PPC440_SYS_INFO *board_cfg );
  35 int compare_to_true(char *str );
  36 char *remove_l_w_space(char *in_str );
  37 char *remove_t_w_space(char *in_str );
  38 int get_console_port(void);
  39 unsigned long ppcMfcpr(unsigned long cpr_reg);
  40 unsigned long ppcMfsdr(unsigned long sdr_reg);
  41
  42 #define DEBUG_ENV
  43 #ifdef DEBUG_ENV
  44 #define DEBUGF(fmt,args...) printf(fmt ,##args)
  45 #else
  46 #define DEBUGF(fmt,args...)
  47 #endif
  48
  49 #define FALSE   0
  50 #define TRUE    1
  51
  52 int board_early_init_f (void)
  53 {
  54 /*----------------------------------------------------------------------------+
  55 | Define Boot devices
  56 +----------------------------------------------------------------------------*/
  57 #define BOOT_FROM_SMALL_FLASH           0x00
  58 #define BOOT_FROM_LARGE_FLASH_OR_SRAM   0x01
  59 #define BOOT_FROM_PCI                   0x02
  60 #define BOOT_DEVICE_UNKNOWN             0x03
  61
  62 /*----------------------------------------------------------------------------+
  63 | EBC Devices Characteristics
  64 |   Peripheral Bank Access Parameters       -   EBC_BxAP
  65 |   Peripheral Bank Configuration Register  -   EBC_BxCR
  66 +----------------------------------------------------------------------------*/
  67
  68 /*
  69  * Small Flash and FRAM
  70  * BU Value
  71  * BxAP : 0x03800000  - 0 00000111 0 00 00 00 00 00 000 0 0 0 0 00000
  72  * B0CR : 0xff098000  - BAS = ff0 - 100 11 00 0000000000000
  73  * B2CR : 0xe7098000  - BAS = e70 - 100 11 00 0000000000000
  74  */
  75 #define EBC_BXAP_SMALL_FLASH            EBC_BXAP_BME_DISABLED   | \
  76                                         EBC_BXAP_TWT_ENCODE(7)  | \
  77                                         EBC_BXAP_BCE_DISABLE    | \
  78                                         EBC_BXAP_BCT_2TRANS     | \
  79                                         EBC_BXAP_CSN_ENCODE(0)  | \
  80                                         EBC_BXAP_OEN_ENCODE(0)  | \
  81                                         EBC_BXAP_WBN_ENCODE(0)  | \
  82                                         EBC_BXAP_WBF_ENCODE(0)  | \
  83                                         EBC_BXAP_TH_ENCODE(0)   | \
  84                                         EBC_BXAP_RE_DISABLED    | \
  85                                         EBC_BXAP_SOR_DELAYED    | \
  86                                         EBC_BXAP_BEM_WRITEONLY  | \
  87                                         EBC_BXAP_PEN_DISABLED
  88
  89 #define EBC_BXCR_SMALL_FLASH_CS0        EBC_BXCR_BAS_ENCODE(0xFF000000) | \
  90                                         EBC_BXCR_BS_16MB                | \
  91                                         EBC_BXCR_BU_RW                  | \
  92                                         EBC_BXCR_BW_8BIT
  93
  94 #define EBC_BXCR_SMALL_FLASH_CS2        EBC_BXCR_BAS_ENCODE(0xe7000000) | \
  95                                         EBC_BXCR_BS_16MB                | \
  96                                         EBC_BXCR_BU_RW                  | \
  97                                         EBC_BXCR_BW_8BIT
  98
  99 /*
 100  * Large Flash and SRAM
 101  * BU Value
 102  * BxAP : 0x048ff240  - 0 00000111 0 00 00 00 00 00 000 0 0 0 0 00000
 103  * B0CR : 0xff09a000  - BAS = ff0 - 100 11 01 0000000000000
 104  * B2CR : 0xe709a000  - BAS = e70 - 100 11 01 0000000000000
 105 */
 106 #define EBC_BXAP_LARGE_FLASH            EBC_BXAP_BME_DISABLED   | \
 107                                         EBC_BXAP_TWT_ENCODE(7)  | \
 108                                         EBC_BXAP_BCE_DISABLE    | \
 109                                         EBC_BXAP_BCT_2TRANS     | \
 110                                         EBC_BXAP_CSN_ENCODE(0)  | \
 111                                         EBC_BXAP_OEN_ENCODE(0)  | \
 112                                         EBC_BXAP_WBN_ENCODE(0)  | \
 113                                         EBC_BXAP_WBF_ENCODE(0)  | \
 114                                         EBC_BXAP_TH_ENCODE(0)   | \
 115                                         EBC_BXAP_RE_DISABLED    | \
 116                                         EBC_BXAP_SOR_DELAYED    | \
 117                                         EBC_BXAP_BEM_WRITEONLY  | \
 118                                         EBC_BXAP_PEN_DISABLED
 119
 120 #define EBC_BXCR_LARGE_FLASH_CS0        EBC_BXCR_BAS_ENCODE(0xFF000000) | \
 121                                         EBC_BXCR_BS_16MB                | \
 122                                         EBC_BXCR_BU_RW                  | \
 123                                         EBC_BXCR_BW_16BIT
 124
 125 #define EBC_BXCR_LARGE_FLASH_CS2        EBC_BXCR_BAS_ENCODE(0xE7000000) | \
 126                                         EBC_BXCR_BS_16MB                | \
 127                                         EBC_BXCR_BU_RW                  | \
 128                                         EBC_BXCR_BW_16BIT
 129
 130 /*
 131  * FPGA
 132  * BU value :
 133  * B1AP = 0x05895240  - 0 00001011 0 00 10 01 01 01 001 0 0 1 0 00000
 134  * B1CR = 0xe201a000  - BAS = e20 - 000 11 01 00000000000000
 135  */
 136 #define EBC_BXAP_FPGA                   EBC_BXAP_BME_DISABLED   | \
 137                                         EBC_BXAP_TWT_ENCODE(11) | \
 138                                         EBC_BXAP_BCE_DISABLE    | \
 139                                         EBC_BXAP_BCT_2TRANS     | \
 140                                         EBC_BXAP_CSN_ENCODE(10) | \
 141                                         EBC_BXAP_OEN_ENCODE(1)  | \
 142                                         EBC_BXAP_WBN_ENCODE(1)  | \
 143                                         EBC_BXAP_WBF_ENCODE(1)  | \
 144                                         EBC_BXAP_TH_ENCODE(1)   | \
 145                                         EBC_BXAP_RE_DISABLED    | \
 146                                         EBC_BXAP_SOR_DELAYED    | \
 147                                         EBC_BXAP_BEM_RW         | \
 148                                         EBC_BXAP_PEN_DISABLED
 149
 150 #define EBC_BXCR_FPGA_CS1               EBC_BXCR_BAS_ENCODE(0xe2000000) | \
 151                                         EBC_BXCR_BS_1MB                 | \
 152                                         EBC_BXCR_BU_RW                  | \
 153                                         EBC_BXCR_BW_16BIT
 154
 155          unsigned long mfr;
 156         /*
 157          * Define Variables for EBC initialization depending on BOOTSTRAP option
 158          */
 159         unsigned long sdr0_pinstp, sdr0_sdstp1 ;
 160         unsigned long bootstrap_settings, ebc_data_width, boot_selection;
 161         int computed_boot_device = BOOT_DEVICE_UNKNOWN;
 162
 163         /*-------------------------------------------------------------------+
 164          | Initialize EBC CONFIG -
 165          | Keep the Default value, but the bit PDT which has to be set to 1 ?TBC
 166          | default value :
 167          |      0x07C00000 - 0 0 000 1 1 1 1 1 0000 0 00000 000000000000
 168          |
 169          +-------------------------------------------------------------------*/
 170         mtebc(xbcfg, EBC_CFG_LE_UNLOCK |
 171                         EBC_CFG_PTD_ENABLE |
 172                         EBC_CFG_RTC_16PERCLK |
 173                         EBC_CFG_ATC_PREVIOUS |
 174                         EBC_CFG_DTC_PREVIOUS |
 175                         EBC_CFG_CTC_PREVIOUS |
 176                         EBC_CFG_OEO_PREVIOUS |
 177                         EBC_CFG_EMC_DEFAULT |
 178                         EBC_CFG_PME_DISABLE |
 179                         EBC_CFG_PR_16);
 180
 181         /*-------------------------------------------------------------------+
 182          |
 183          |  PART 1 : Initialize EBC Bank 1
 184          |  ==============================
 185          | Bank1 is always associated to the EPLD.
 186          | It has to be initialized prior to other banks settings computation
 187          | since some board registers values may be needed to determine the
 188          | boot type
 189          |
 190          +-------------------------------------------------------------------*/
 191         mtebc(pb1ap, EBC_BXAP_FPGA);
 192         mtebc(pb1cr, EBC_BXCR_FPGA_CS1);
 193
 194         /*-------------------------------------------------------------------+
 195          |
 196          |  PART 2 : Determine which boot device was selected
 197          |  =================================================
 198          |
 199          |  Read Pin Strap Register in PPC440SPe
 200          |  Result can either be :
 201          |   - Boot strap = boot from EBC 8bits     => Small Flash
 202          |   - Boot strap = boot from PCI
 203          |   - Boot strap = IIC
 204          |  In case of boot from IIC, read Serial Device Strap Register1
 205          |
 206          |  Result can either be :
 207          |   - Boot from EBC  - EBC Bus Width = 8bits    => Small Flash
 208          |   - Boot from EBC  - EBC Bus Width = 16bits   => Large Flash or SRAM
 209          |   - Boot from PCI
 210          |
 211          +-------------------------------------------------------------------*/
 212         /* Read Pin Strap Register in PPC440SP */
 213         sdr0_pinstp = ppcMfsdr(SDR0_PINSTP);
 214         bootstrap_settings = sdr0_pinstp & SDR0_PINSTP_BOOTSTRAP_MASK;
 215
 216         switch (bootstrap_settings) {
 217                 case SDR0_PINSTP_BOOTSTRAP_SETTINGS0:
 218                         /*
 219                          * Strapping Option A
 220                          * Boot from EBC - 8 bits , Small Flash
 221                          */
 222                         computed_boot_device = BOOT_FROM_SMALL_FLASH;
 223                         break;
 224                 case SDR0_PINSTP_BOOTSTRAP_SETTINGS1:
 225                         /*
 226                          * Strappping Option B
 227                          * Boot from PCI
 228                          */
 229                         computed_boot_device = BOOT_FROM_PCI;
 230                         break;
 231                 case SDR0_PINSTP_BOOTSTRAP_IIC_50_EN:
 232                 case SDR0_PINSTP_BOOTSTRAP_IIC_54_EN:
 233                         /*
 234                          * Strapping Option C or D
 235                          * Boot Settings in IIC EEprom address 0x50 or 0x54
 236                          * Read Serial Device Strap Register1 in PPC440SPe
 237                          */
 238                         sdr0_sdstp1 = ppcMfsdr(SDR0_SDSTP1);
 239                         boot_selection = sdr0_sdstp1 & SDR0_SDSTP1_ERPN_MASK;
 240                         ebc_data_width = sdr0_sdstp1 & SDR0_SDSTP1_EBCW_MASK;
 241
 242                         switch (boot_selection) {
 243                                 case SDR0_SDSTP1_ERPN_EBC:
 244                                         switch (ebc_data_width) {
 245                                                 case SDR0_SDSTP1_EBCW_16_BITS:
 246                                                         computed_boot_device =
 247                                                                 BOOT_FROM_LARGE_FLASH_OR_SRAM;
 248                                                         break;
 249                                                 case SDR0_SDSTP1_EBCW_8_BITS :
 250                                                         computed_boot_device = BOOT_FROM_SMALL_FLASH;
 251                                                         break;
 252                                         }
 253                                         break;
 254
 255                                 case SDR0_SDSTP1_ERPN_PCI:
 256                                         computed_boot_device = BOOT_FROM_PCI;
 257                                         break;
 258                                 default:
 259                                         /* should not occure */
 260                                         computed_boot_device = BOOT_DEVICE_UNKNOWN;
 261                         }
 262                         break;
 263                 default:
 264                         /* should not be */
 265                         computed_boot_device = BOOT_DEVICE_UNKNOWN;
 266                         break;
 267         }
 268
 269         /*-------------------------------------------------------------------+
 270          |
 271          |  PART 3 : Compute EBC settings depending on selected boot device
 272          |  ======   ======================================================
 273          |
 274          | Resulting EBC init will be among following configurations :
 275          |
 276          |  - Boot from EBC 8bits => boot from Small Flash selected
 277          |            EBC-CS0     = Small Flash
 278          |            EBC-CS2     = Large Flash and SRAM
 279          |
 280          |  - Boot from EBC 16bits => boot from Large Flash or SRAM
 281          |            EBC-CS0     = Large Flash or SRAM
 282          |            EBC-CS2     = Small Flash
 283          |
 284          |  - Boot from PCI
 285          |            EBC-CS0     = not initialized to avoid address contention
 286          |            EBC-CS2     = same as boot from Small Flash selected
 287          |
 288          +-------------------------------------------------------------------*/
 289         unsigned long ebc0_cs0_bxap_value = 0, ebc0_cs0_bxcr_value = 0;
 290         unsigned long ebc0_cs2_bxap_value = 0, ebc0_cs2_bxcr_value = 0;
 291
 292         switch (computed_boot_device) {
 293                 /*-------------------------------------------------------------------*/
 294                 case BOOT_FROM_PCI:
 295                 /*-------------------------------------------------------------------*/
 296                         /*
 297                          * By Default CS2 is affected to LARGE Flash
 298                          * do not initialize SMALL FLASH to avoid address contention
 299                          * Large Flash
 300                          */
 301                         ebc0_cs2_bxap_value = EBC_BXAP_LARGE_FLASH;
 302                         ebc0_cs2_bxcr_value = EBC_BXCR_LARGE_FLASH_CS2;
 303                         break;
 304
 305                 /*-------------------------------------------------------------------*/
 306                 case BOOT_FROM_SMALL_FLASH:
 307                 /*-------------------------------------------------------------------*/
 308                         ebc0_cs0_bxap_value = EBC_BXAP_SMALL_FLASH;
 309                         ebc0_cs0_bxcr_value = EBC_BXCR_SMALL_FLASH_CS0;
 310
 311                         /*
 312                          * Large Flash or SRAM
 313                          */
 314                         /* ebc0_cs2_bxap_value = EBC_BXAP_LARGE_FLASH; */
 315                         ebc0_cs2_bxap_value = 0x048ff240;
 316                         ebc0_cs2_bxcr_value = EBC_BXCR_LARGE_FLASH_CS2;
 317                         break;
 318
 319                 /*-------------------------------------------------------------------*/
 320                 case BOOT_FROM_LARGE_FLASH_OR_SRAM:
 321                 /*-------------------------------------------------------------------*/
 322                         ebc0_cs0_bxap_value = EBC_BXAP_LARGE_FLASH;
 323                         ebc0_cs0_bxcr_value = EBC_BXCR_LARGE_FLASH_CS0;
 324
 325                         /* Small flash */
 326                         ebc0_cs2_bxap_value = EBC_BXAP_SMALL_FLASH;
 327                         ebc0_cs2_bxcr_value = EBC_BXCR_SMALL_FLASH_CS2;
 328                         break;
 329
 330                 /*-------------------------------------------------------------------*/
 331                 default:
 332                 /*-------------------------------------------------------------------*/
 333                         /* BOOT_DEVICE_UNKNOWN */
 334                         break;
 335         }
 336
 337         mtebc(pb0ap, ebc0_cs0_bxap_value);
 338         mtebc(pb0cr, ebc0_cs0_bxcr_value);
 339         mtebc(pb2ap, ebc0_cs2_bxap_value);
 340         mtebc(pb2cr, ebc0_cs2_bxcr_value);
 341
 342         /*--------------------------------------------------------------------+
 343          | Interrupt controller setup for the AMCC 440SPe Evaluation board.
 344          +--------------------------------------------------------------------+
 345         +---------------------------------------------------------------------+
 346         |Interrupt| Source                            | Pol.  | Sensi.| Crit. |
 347         +---------+-----------------------------------+-------+-------+-------+
 348         | IRQ 00  | UART0                             | High  | Level | Non   |
 349         | IRQ 01  | UART1                             | High  | Level | Non   |
 350         | IRQ 02  | IIC0                              | High  | Level | Non   |
 351         | IRQ 03  | IIC1                              | High  | Level | Non   |
 352         | IRQ 04  | PCI0X0 MSG IN                     | High  | Level | Non   |
 353         | IRQ 05  | PCI0X0 CMD Write                  | High  | Level | Non   |
 354         | IRQ 06  | PCI0X0 Power Mgt                  | High  | Level | Non   |
 355         | IRQ 07  | PCI0X0 VPD Access                 | Rising| Edge  | Non   |
 356         | IRQ 08  | PCI0X0 MSI level 0                | High  | Lvl/ed| Non   |
 357         | IRQ 09  | External IRQ 15 - (PCI-Express)   | pgm H | Pgm   | Non   |
 358         | IRQ 10  | UIC2 Non-critical Int.            | NA    | NA    | Non   |
 359         | IRQ 11  | UIC2 Critical Interrupt           | NA    | NA    | Crit  |
 360         | IRQ 12  | PCI Express MSI Level 0           | Rising| Edge  | Non   |
 361         | IRQ 13  | PCI Express MSI Level 1           | Rising| Edge  | Non   |
 362         | IRQ 14  | PCI Express MSI Level 2           | Rising| Edge  | Non   |
 363         | IRQ 15  | PCI Express MSI Level 3           | Rising| Edge  | Non   |
 364         | IRQ 16  | UIC3 Non-critical Int.            | NA    | NA    | Non   |
 365         | IRQ 17  | UIC3 Critical Interrupt           | NA    | NA    | Crit  |
 366         | IRQ 18  | External IRQ 14 - (PCI-Express)   | Pgm   | Pgm   | Non   |
 367         | IRQ 19  | DMA Channel 0 FIFO Full           | High  | Level | Non   |
 368         | IRQ 20  | DMA Channel 0 Stat FIFO           | High  | Level | Non   |
 369         | IRQ 21  | DMA Channel 1 FIFO Full           | High  | Level | Non   |
 370         | IRQ 22  | DMA Channel 1 Stat FIFO           | High  | Level | Non   |
 371         | IRQ 23  | I2O Inbound Doorbell              | High  | Level | Non   |
 372         | IRQ 24  | Inbound Post List FIFO Not Empt   | High  | Level | Non   |
 373         | IRQ 25  | I2O Region 0 LL PLB Write         | High  | Level | Non   |
 374         | IRQ 26  | I2O Region 1 LL PLB Write         | High  | Level | Non   |
 375         | IRQ 27  | I2O Region 0 HB PLB Write         | High  | Level | Non   |
 376         | IRQ 28  | I2O Region 1 HB PLB Write         | High  | Level | Non   |
 377         | IRQ 29  | GPT Down Count Timer              | Rising| Edge  | Non   |
 378         | IRQ 30  | UIC1 Non-critical Int.            | NA    | NA    | Non   |
 379         | IRQ 31  | UIC1 Critical Interrupt           | NA    | NA    | Crit. |
 380         |----------------------------------------------------------------------
 381         | IRQ 32  | Ext. IRQ 13 - (PCI-Express)       |pgm (H)|pgm/Lvl| Non   |
 382         | IRQ 33  | MAL Serr                          | High  | Level | Non   |
 383         | IRQ 34  | MAL Txde                          | High  | Level | Non   |
 384         | IRQ 35  | MAL Rxde                          | High  | Level | Non   |
 385         | IRQ 36  | DMC CE or DMC UE                  | High  | Level | Non   |
 386         | IRQ 37  | EBC or UART2                      | High  |Lvl Edg| Non   |
 387         | IRQ 38  | MAL TX EOB                        | High  | Level | Non   |
 388         | IRQ 39  | MAL RX EOB                        | High  | Level | Non   |
 389         | IRQ 40  | PCIX0 MSI Level 1                 | High  |Lvl Edg| Non   |
 390         | IRQ 41  | PCIX0 MSI level 2                 | High  |Lvl Edg| Non   |
 391         | IRQ 42  | PCIX0 MSI level 3                 | High  |Lvl Edg| Non   |
 392         | IRQ 43  | L2 Cache                          | Risin | Edge  | Non   |
 393         | IRQ 44  | GPT Compare Timer 0               | Risin | Edge  | Non   |
 394         | IRQ 45  | GPT Compare Timer 1               | Risin | Edge  | Non   |
 395         | IRQ 46  | GPT Compare Timer 2               | Risin | Edge  | Non   |
 396         | IRQ 47  | GPT Compare Timer 3               | Risin | Edge  | Non   |
 397         | IRQ 48  | GPT Compare Timer 4               | Risin | Edge  | Non   |
 398         | IRQ 49  | Ext. IRQ 12 - PCI-X               |pgm/Fal|pgm/Lvl| Non   |
 399         | IRQ 50  | Ext. IRQ 11 -                     |pgm (H)|pgm/Lvl| Non   |
 400         | IRQ 51  | Ext. IRQ 10 -                     |pgm (H)|pgm/Lvl| Non   |
 401         | IRQ 52  | Ext. IRQ 9                        |pgm (H)|pgm/Lvl| Non   |
 402         | IRQ 53  | Ext. IRQ 8                        |pgm (H)|pgm/Lvl| Non   |
 403         | IRQ 54  | DMA Error                         | High  | Level | Non   |
 404         | IRQ 55  | DMA I2O Error                     | High  | Level | Non   |
 405         | IRQ 56  | Serial ROM                        | High  | Level | Non   |
 406         | IRQ 57  | PCIX0 Error                       | High  | Edge  | Non   |
 407         | IRQ 58  | Ext. IRQ 7-                       |pgm (H)|pgm/Lvl| Non   |
 408         | IRQ 59  | Ext. IRQ 6-                       |pgm (H)|pgm/Lvl| Non   |
 409         | IRQ 60  | EMAC0 Interrupt                   | High  | Level | Non   |
 410         | IRQ 61  | EMAC0 Wake-up                     | High  | Level | Non   |
 411         | IRQ 62  | Reserved                          | High  | Level | Non   |
 412         | IRQ 63  | XOR                               | High  | Level | Non   |
 413         |----------------------------------------------------------------------
 414         | IRQ 64  | PE0 AL                            | High  | Level | Non   |
 415         | IRQ 65  | PE0 VPD Access                    | Risin | Edge  | Non   |
 416         | IRQ 66  | PE0 Hot Reset Request             | Risin | Edge  | Non   |
 417         | IRQ 67  | PE0 Hot Reset Request             | Falli | Edge  | Non   |
 418         | IRQ 68  | PE0 TCR                           | High  | Level | Non   |
 419         | IRQ 69  | PE0 BusMaster VCO                 | Falli | Edge  | Non   |
 420         | IRQ 70  | PE0 DCR Error                     | High  | Level | Non   |
 421         | IRQ 71  | Reserved                          | N/A   | N/A   | Non   |
 422         | IRQ 72  | PE1 AL                            | High  | Level | Non   |
 423         | IRQ 73  | PE1 VPD Access                    | Risin | Edge  | Non   |
 424         | IRQ 74  | PE1 Hot Reset Request             | Risin | Edge  | Non   |
 425         | IRQ 75  | PE1 Hot Reset Request             | Falli | Edge  | Non   |
 426         | IRQ 76  | PE1 TCR                           | High  | Level | Non   |
 427         | IRQ 77  | PE1 BusMaster VCO                 | Falli | Edge  | Non   |
 428         | IRQ 78  | PE1 DCR Error                     | High  | Level | Non   |
 429         | IRQ 79  | Reserved                          | N/A   | N/A   | Non   |
 430         | IRQ 80  | PE2 AL                            | High  | Level | Non   |
 431         | IRQ 81  | PE2 VPD Access                    | Risin | Edge  | Non   |
 432         | IRQ 82  | PE2 Hot Reset Request             | Risin | Edge  | Non   |
 433         | IRQ 83  | PE2 Hot Reset Request             | Falli | Edge  | Non   |
 434         | IRQ 84  | PE2 TCR                           | High  | Level | Non   |
 435         | IRQ 85  | PE2 BusMaster VCO                 | Falli | Edge  | Non   |
 436         | IRQ 86  | PE2 DCR Error                     | High  | Level | Non   |
 437         | IRQ 87  | Reserved                          | N/A   | N/A   | Non   |
 438         | IRQ 88  | External IRQ(5)                   | Progr | Progr | Non   |
 439         | IRQ 89  | External IRQ 4 - Ethernet         | Progr | Progr | Non   |
 440         | IRQ 90  | External IRQ 3 - PCI-X            | Progr | Progr | Non   |
 441         | IRQ 91  | External IRQ 2 - PCI-X            | Progr | Progr | Non   |
 442         | IRQ 92  | External IRQ 1 - PCI-X            | Progr | Progr | Non   |
 443         | IRQ 93  | External IRQ 0 - PCI-X            | Progr | Progr | Non   |
 444         | IRQ 94  | Reserved                          | N/A   | N/A   | Non   |
 445         | IRQ 95  | Reserved                          | N/A   | N/A   | Non   |
 446         |---------------------------------------------------------------------
 447         | IRQ 96  | PE0 INTA                          | High  | Level | Non   |
 448         | IRQ 97  | PE0 INTB                          | High  | Level | Non   |
 449         | IRQ 98  | PE0 INTC                          | High  | Level | Non   |
 450         | IRQ 99  | PE0 INTD                          | High  | Level | Non   |
 451         | IRQ 100 | PE1 INTA                          | High  | Level | Non   |
 452         | IRQ 101 | PE1 INTB                          | High  | Level | Non   |
 453         | IRQ 102 | PE1 INTC                          | High  | Level | Non   |
 454         | IRQ 103 | PE1 INTD                          | High  | Level | Non   |
 455         | IRQ 104 | PE2 INTA                          | High  | Level | Non   |
 456         | IRQ 105 | PE2 INTB                          | High  | Level | Non   |
 457         | IRQ 106 | PE2 INTC                          | High  | Level | Non   |
 458         | IRQ 107 | PE2 INTD                          | Risin | Edge  | Non   |
 459         | IRQ 108 | PCI Express MSI Level 4           | Risin | Edge  | Non   |
 460         | IRQ 109 | PCI Express MSI Level 5           | Risin | Edge  | Non   |
 461         | IRQ 110 | PCI Express MSI Level 6           | Risin | Edge  | Non   |
 462         | IRQ 111 | PCI Express MSI Level 7           | Risin | Edge  | Non   |
 463         | IRQ 116 | PCI Express MSI Level 12          | Risin | Edge  | Non   |
 464         | IRQ 112 | PCI Express MSI Level 8           | Risin | Edge  | Non   |
 465         | IRQ 113 | PCI Express MSI Level 9           | Risin | Edge  | Non   |
 466         | IRQ 114 | PCI Express MSI Level 10          | Risin | Edge  | Non   |
 467         | IRQ 115 | PCI Express MSI Level 11          | Risin | Edge  | Non   |
 468         | IRQ 117 | PCI Express MSI Level 13          | Risin | Edge  | Non   |
 469         | IRQ 118 | PCI Express MSI Level 14          | Risin | Edge  | Non   |
 470         | IRQ 119 | PCI Express MSI Level 15          | Risin | Edge  | Non   |
 471         | IRQ 120 | PCI Express MSI Level 16          | Risin | Edge  | Non   |
 472         | IRQ 121 | PCI Express MSI Level 17          | Risin | Edge  | Non   |
 473         | IRQ 122 | PCI Express MSI Level 18          | Risin | Edge  | Non   |
 474         | IRQ 123 | PCI Express MSI Level 19          | Risin | Edge  | Non   |
 475         | IRQ 124 | PCI Express MSI Level 20          | Risin | Edge  | Non   |
 476         | IRQ 125 | PCI Express MSI Level 21          | Risin | Edge  | Non   |
 477         | IRQ 126 | PCI Express MSI Level 22          | Risin | Edge  | Non   |
 478         | IRQ 127 | PCI Express MSI Level 23          | Risin | Edge  | Non   |
 479         +---------+-----------------------------------+-------+-------+------*/
 480         /*--------------------------------------------------------------------+
 481          | Put UICs in PowerPC440SPemode.
 482          | Initialise UIC registers.  Clear all interrupts.  Disable all
 483          | interrupts.
 484          | Set critical interrupt values.  Set interrupt polarities.  Set
 485          | interrupt trigger levels.  Make bit 0 High  priority.  Clear all
 486          | interrupts again.
 487          +-------------------------------------------------------------------*/
 488         mtdcr (uic3sr, 0xffffffff);     /* Clear all interrupts */
 489         mtdcr (uic3er, 0x00000000);     /* disable all interrupts */
 490         mtdcr (uic3cr, 0x00000000);     /* Set Critical / Non Critical
 491                                          * interrupts */
 492         mtdcr (uic3pr, 0xffffffff);     /* Set Interrupt Polarities */
 493         mtdcr (uic3tr, 0x001fffff);     /* Set Interrupt Trigger Levels */
 494         mtdcr (uic3vr, 0x00000001);     /* Set Vect base=0,INT31 Highest
 495                                          * priority */
 496         mtdcr (uic3sr, 0x00000000);     /* clear all  interrupts */
 497         mtdcr (uic3sr, 0xffffffff);     /* clear all  interrupts */
 498
 499         mtdcr (uic2sr, 0xffffffff);     /* Clear all interrupts */
 500         mtdcr (uic2er, 0x00000000);     /* disable all interrupts */
 501         mtdcr (uic2cr, 0x00000000);     /* Set Critical / Non Critical
 502                                          * interrupts */
 503         mtdcr (uic2pr, 0xebebebff);     /* Set Interrupt Polarities */
 504         mtdcr (uic2tr, 0x74747400);     /* Set Interrupt Trigger Levels */
 505         mtdcr (uic2vr, 0x00000001);     /* Set Vect base=0,INT31 Highest
 506                                          * priority */
 507         mtdcr (uic2sr, 0x00000000);     /* clear all interrupts */
 508         mtdcr (uic2sr, 0xffffffff);     /* clear all interrupts */
 509
 510         mtdcr (uic1sr, 0xffffffff);     /* Clear all interrupts */
 511         mtdcr (uic1er, 0x00000000);     /* disable all interrupts */
 512         mtdcr (uic1cr, 0x00000000);     /* Set Critical / Non Critical
 513                                          * interrupts */
 514         mtdcr (uic1pr, 0xffffffff);     /* Set Interrupt Polarities */
 515         mtdcr (uic1tr, 0x001f8040);     /* Set Interrupt Trigger Levels */
 516         mtdcr (uic1vr, 0x00000001);     /* Set Vect base=0,INT31 Highest
 517                                          * priority */
 518         mtdcr (uic1sr, 0x00000000);     /* clear all interrupts */
 519         mtdcr (uic1sr, 0xffffffff);     /* clear all interrupts */
 520
 521         mtdcr (uic0sr, 0xffffffff);     /* Clear all interrupts */
 522         mtdcr (uic0er, 0x00000000);     /* disable all interrupts excepted
 523                                          * cascade to be checked */
 524         mtdcr (uic0cr, 0x00104001);     /* Set Critical / Non Critical
 525                                          * interrupts */
 526         mtdcr (uic0pr, 0xffffffff);     /* Set Interrupt Polarities */
 527         mtdcr (uic0tr, 0x010f0004);     /* Set Interrupt Trigger Levels */
 528         mtdcr (uic0vr, 0x00000001);     /* Set Vect base=0,INT31 Highest
 529                                          * priority */
 530         mtdcr (uic0sr, 0x00000000);     /* clear all interrupts */
 531         mtdcr (uic0sr, 0xffffffff);     /* clear all interrupts */
 532
 533         /* SDR0_MFR should be part of Ethernet init */
 534         mfsdr (sdr_mfr, mfr);
 535         mfr &= ~SDR0_MFR_ECS_MASK;
 536         /*mtsdr(sdr_mfr, mfr);*/
 537         fpga_init();
 538
 539         return 0;
 540 }
 541
 542 int checkboard (void)
 543 {
 544         char *s = getenv("serial#");
 545
 546         printf("Board: Yucca - AMCC 440SPe Evaluation Board");
 547         if (s != NULL) {
 548                 puts(", serial# ");
 549                 puts(s);
 550         }
 551         putc('\n');
 552
 553         return 0;
 554 }
 555
 556 static long int yucca_probe_for_dimms(void)
 557 {
 558         long int        dimm_installed[MAXDIMMS];
 559         long int        dimm_num, probe_result;
 560         long int        dimms_found = 0;
 561         uchar           dimm_addr = IIC0_DIMM0_ADDR;
 562
 563         for (dimm_num = 0; dimm_num < MAXDIMMS; dimm_num++) {
 564                 /* check if there is a chip at the dimm address */
 565                 switch (dimm_num) {
 566                         case 0:
 567                                 dimm_addr = IIC0_DIMM0_ADDR;
 568                                 break;
 569                         case 1:
 570                                 dimm_addr = IIC0_DIMM1_ADDR;
 571                                 break;
 572                 }
 573                 probe_result = i2c_probe(dimm_addr);
 574
 575                 if (probe_result == 0) {
 576                         dimm_installed[dimm_num] = TRUE;
 577                         dimms_found++;
 578                         debug("DIMM slot %d: DDR2 SDRAM detected\n",dimm_num);
 579                 } else {
 580                         dimm_installed[dimm_num] = FALSE;
 581                         debug("DIMM slot %d: Not populated or cannot sucessfully probe the DIMM\n", dimm_num);
 582                 }
 583         }
 584
 585         if (dimms_found == 0) {
 586                 printf("ERROR - No memory installed.  Install a DDR-SDRAM DIMM.\n\n");
 587                 hang();
 588         }
 589
 590         if (dimm_installed[0] != TRUE) {
 591                 printf("\nERROR - DIMM slot 0 must be populated before DIMM slot 1.\n");
 592                 printf("        Unsupported configuration. Move DIMM module from DIMM slot 1 to slot 0.\n\n");
 593                 hang();
 594         }
 595
 596         return dimms_found;
 597 }
 598
 599 /*************************************************************************
 600  * init SDRAM controller with fixed value
 601  * the initialization values are for 2x MICRON DDR2
 602  * PN: MT18HTF6472DY-53EB2
 603  * 512MB, DDR2, 533, CL4, ECC, REG
 604  ************************************************************************/
 605 static long int fixed_sdram(void)
 606 {
 607         long int yucca_dimms = 0;
 608
 609         yucca_dimms = yucca_probe_for_dimms();
 610
 611         /* SDRAM0_MCOPT2 (0X21) Clear DCEN BIT  */
 612         mtdcr( 0x10, 0x00000021 );
 613         mtdcr( 0x11, 0x84000000 );
 614
 615         /* SDRAM0_MCOPT1 (0X20) ECC OFF / 64 bits / 4 banks / DDR2      */
 616         mtdcr( 0x10, 0x00000020 );
 617         mtdcr( 0x11, 0x2D122000 );
 618
 619         /* SET MCIF0_CODT   Die Termination On  */
 620         mtdcr( 0x10, 0x00000026 );
 621         if (yucca_dimms == 2)
 622                 mtdcr( 0x11, 0x2A800021 );
 623         else if (yucca_dimms == 1)
 624                 mtdcr( 0x11, 0x02800021 );
 625
 626         /* On-Die Termination for Bank 0        */
 627         mtdcr( 0x10, 0x00000022 );
 628         if (yucca_dimms == 2)
 629                 mtdcr( 0x11, 0x18000000 );
 630         else if (yucca_dimms == 1)
 631                 mtdcr( 0x11, 0x06000000 );
 632
 633         /*      On-Die Termination for Bank 1   */
 634         mtdcr( 0x10, 0x00000023 );
 635         if (yucca_dimms == 2)
 636                 mtdcr( 0x11, 0x18000000 );
 637         else if (yucca_dimms == 1)
 638                 mtdcr( 0x11, 0x01800000 );
 639
 640         /*      On-Die Termination for Bank 2   */
 641         mtdcr( 0x10, 0x00000024 );
 642         if (yucca_dimms == 2)
 643                 mtdcr( 0x11, 0x01800000 );
 644         else if (yucca_dimms == 1)
 645                 mtdcr( 0x11, 0x00000000 );
 646
 647         /*      On-Die Termination for Bank 3   */
 648         mtdcr( 0x10, 0x00000025 );
 649         if (yucca_dimms == 2)
 650                 mtdcr( 0x11, 0x01800000 );
 651         else if (yucca_dimms == 1)
 652                 mtdcr( 0x11, 0x00000000 );
 653
 654         /* Refresh Time register (0x30) Refresh every 7.8125uS  */
 655         mtdcr( 0x10, 0x00000030 );
 656         mtdcr( 0x11, 0x08200000 );
 657
 658         /* SET MCIF0_MMODE       CL 4   */
 659         mtdcr( 0x10, 0x00000088 );
 660         mtdcr( 0x11, 0x00000642 );
 661
 662         /* MCIF0_MEMODE */
 663         mtdcr( 0x10, 0x00000089 );
 664         mtdcr( 0x11, 0x00000004 );
 665
 666         /*SET MCIF0_MB0CF       */
 667         mtdcr( 0x10, 0x00000040 );
 668         mtdcr( 0x11, 0x00000201 );
 669
 670         /* SET MCIF0_MB1CF      */
 671         mtdcr( 0x10, 0x00000044 );
 672         mtdcr( 0x11, 0x00000201 );
 673
 674         /* SET MCIF0_MB2CF      */
 675         mtdcr( 0x10, 0x00000048 );
 676         if (yucca_dimms == 2)
 677                 mtdcr( 0x11, 0x00000201 );
 678         else if (yucca_dimms == 1)
 679                 mtdcr( 0x11, 0x00000000 );
 680
 681         /* SET MCIF0_MB3CF      */
 682         mtdcr( 0x10, 0x0000004c );
 683         if (yucca_dimms == 2)
 684                 mtdcr( 0x11, 0x00000201 );
 685         else if (yucca_dimms == 1)
 686                 mtdcr( 0x11, 0x00000000 );
 687
 688         /* SET MCIF0_INITPLR0  # NOP            */
 689         mtdcr( 0x10, 0x00000050 );
 690         mtdcr( 0x11, 0xB5380000 );
 691
 692         /* SET MCIF0_INITPLR1  # PRE            */
 693         mtdcr( 0x10, 0x00000051 );
 694         mtdcr( 0x11, 0x82100400 );
 695
 696         /* SET MCIF0_INITPLR2  # EMR2           */
 697         mtdcr( 0x10, 0x00000052 );
 698         mtdcr( 0x11, 0x80820000 );
 699
 700         /* SET MCIF0_INITPLR3  # EMR3           */
 701         mtdcr( 0x10, 0x00000053 );
 702         mtdcr( 0x11, 0x80830000 );
 703
 704         /* SET MCIF0_INITPLR4  # EMR DLL ENABLE */
 705         mtdcr( 0x10, 0x00000054 );
 706         mtdcr( 0x11, 0x80810000 );
 707
 708         /* SET MCIF0_INITPLR5  # MR DLL RESET   */
 709         mtdcr( 0x10, 0x00000055 );
 710         mtdcr( 0x11, 0x80800542 );
 711
 712         /* SET MCIF0_INITPLR6  # PRE            */
 713         mtdcr( 0x10, 0x00000056 );
 714         mtdcr( 0x11, 0x82100400 );
 715
 716         /* SET MCIF0_INITPLR7  # Refresh        */
 717         mtdcr( 0x10, 0x00000057 );
 718         mtdcr( 0x11, 0x8A080000 );
 719
 720         /* SET MCIF0_INITPLR8  # Refresh        */
 721         mtdcr( 0x10, 0x00000058 );
 722         mtdcr( 0x11, 0x8A080000 );
 723
 724         /* SET MCIF0_INITPLR9  # Refresh        */
 725         mtdcr( 0x10, 0x00000059 );
 726         mtdcr( 0x11, 0x8A080000 );
 727
 728         /* SET MCIF0_INITPLR10 # Refresh        */
 729         mtdcr( 0x10, 0x0000005A );
 730         mtdcr( 0x11, 0x8A080000 );
 731
 732         /* SET MCIF0_INITPLR11 # MR             */
 733         mtdcr( 0x10, 0x0000005B );
 734         mtdcr( 0x11, 0x80800442 );
 735
 736         /* SET MCIF0_INITPLR12 # EMR OCD Default*/
 737         mtdcr( 0x10, 0x0000005C );
 738         mtdcr( 0x11, 0x80810380 );
 739
 740         /* SET MCIF0_INITPLR13 # EMR OCD Exit   */
 741         mtdcr( 0x10, 0x0000005D );
 742         mtdcr( 0x11, 0x80810000 );
 743
 744         /* 0x80: Adv Addr clock by 180 deg      */
 745         mtdcr( 0x10, 0x00000080 );
 746         mtdcr( 0x11, 0x80000000 );
 747
 748         /* 0x21: Exit self refresh, set DC_EN   */
 749         mtdcr( 0x10, 0x00000021 );
 750         mtdcr( 0x11, 0x28000000 );
 751
 752         /* 0x81: Write DQS Adv 90 + Fractional DQS Delay        */
 753         mtdcr( 0x10, 0x00000081 );
 754         mtdcr( 0x11, 0x80000800 );
 755
 756         /* MCIF0_SDTR1  */
 757         mtdcr( 0x10, 0x00000085 );
 758         mtdcr( 0x11, 0x80201000 );
 759
 760         /* MCIF0_SDTR2  */
 761         mtdcr( 0x10, 0x00000086 );
 762         mtdcr( 0x11, 0x42103242 );
 763
 764         /* MCIF0_SDTR3  */
 765         mtdcr( 0x10, 0x00000087 );
 766         mtdcr( 0x11, 0x0C100D14 );
 767
 768         /* SET MQ0_B0BAS  base addr 00000000 / 256MB    */
 769         mtdcr( 0x40, 0x0000F800 );
 770
 771         /* SET MQ0_B1BAS  base addr 10000000 / 256MB    */
 772         mtdcr( 0x41, 0x0400F800 );
 773
 774         /* SET MQ0_B2BAS  base addr 20000000 / 256MB    */
 775         if (yucca_dimms == 2)
 776                 mtdcr( 0x42, 0x0800F800 );
 777         else if (yucca_dimms == 1)
 778                 mtdcr( 0x42, 0x00000000 );
 779
 780         /* SET MQ0_B3BAS  base addr 30000000 / 256MB    */
 781         if (yucca_dimms == 2)
 782                 mtdcr( 0x43, 0x0C00F800 );
 783         else if (yucca_dimms == 1)
 784                 mtdcr( 0x43, 0x00000000 );
 785
 786         /* SDRAM_RQDC   */
 787         mtdcr( 0x10, 0x00000070 );
 788         mtdcr( 0x11, 0x8000003F );
 789
 790         /* SDRAM_RDCC   */
 791         mtdcr( 0x10, 0x00000078 );
 792         mtdcr( 0x11, 0x80000000 );
 793
 794         /* SDRAM_RFDC   */
 795         mtdcr( 0x10, 0x00000074 );
 796         mtdcr( 0x11, 0x00000220 );
 797
 798         return (yucca_dimms * 512) << 20;
 799 }
 800
 801 long int initdram (int board_type)
 802 {
 803         long dram_size = 0;
 804
 805         dram_size = fixed_sdram();
 806
 807         return dram_size;
 808 }
 809
 810 #if defined(CFG_DRAM_TEST)
 811 int testdram (void)
 812 {
 813         uint *pstart = (uint *) 0x00000000;
 814         uint *pend = (uint *) 0x08000000;
 815         uint *p;
 816
 817         for (p = pstart; p < pend; p++)
 818                 *p = 0xaaaaaaaa;
 819
 820         for (p = pstart; p < pend; p++) {
 821                 if (*p != 0xaaaaaaaa) {
 822                         printf ("SDRAM test fails at: %08x\n", (uint) p);
 823                         return 1;
 824                 }
 825         }
 826
 827         for (p = pstart; p < pend; p++)
 828                 *p = 0x55555555;
 829
 830         for (p = pstart; p < pend; p++) {
 831                 if (*p != 0x55555555) {
 832                         printf ("SDRAM test fails at: %08x\n", (uint) p);
 833                         return 1;
 834                 }
 835         }
 836         return 0;
 837 }
 838 #endif
 839
 840 /*************************************************************************
 841  *  pci_pre_init
 842  *
 843  *  This routine is called just prior to registering the hose and gives
 844  *  the board the opportunity to check things. Returning a value of zero
 845  *  indicates that things are bad & PCI initialization should be aborted.
 846  *
 847  *      Different boards may wish to customize the pci controller structure
 848  *      (add regions, override default access routines, etc) or perform
 849  *      certain pre-initialization actions.
 850  *
 851  ************************************************************************/
 852 #if defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT)
 853 int pci_pre_init(struct pci_controller * hose )
 854 {
 855         unsigned long strap;
 856
 857         /*-------------------------------------------------------------------+
 858          *      The yucca board is always configured as the host & requires the
 859          *      PCI arbiter to be enabled.
 860          *-------------------------------------------------------------------*/
 861         mfsdr(sdr_sdstp1, strap);
 862         if( (strap & SDR0_SDSTP1_PAE_MASK) == 0 ) {
 863                 printf("PCI: SDR0_STRP1[%08lX] - PCI Arbiter disabled.\n",strap);
 864                 return 0;
 865         }
 866
 867         return 1;
 868 }
 869 #endif  /* defined(CONFIG_PCI) && defined(CFG_PCI_PRE_INIT) */
 870
 871 /*************************************************************************
 872  *  pci_target_init
 873  *
 874  *      The bootstrap configuration provides default settings for the pci
 875  *      inbound map (PIM). But the bootstrap config choices are limited and
 876  *      may not be sufficient for a given board.
 877  *
 878  ************************************************************************/
 879 #if defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT)
 880 void pci_target_init(struct pci_controller * hose )
 881 {
 882         DECLARE_GLOBAL_DATA_PTR;
 883
 884         /*-------------------------------------------------------------------+
 885          * Disable everything
 886          *-------------------------------------------------------------------*/
 887         out32r( PCIX0_PIM0SA, 0 ); /* disable */
 888         out32r( PCIX0_PIM1SA, 0 ); /* disable */
 889         out32r( PCIX0_PIM2SA, 0 ); /* disable */
 890         out32r( PCIX0_EROMBA, 0 ); /* disable expansion rom */
 891
 892         /*-------------------------------------------------------------------+
 893          * Map all of SDRAM to PCI address 0x0000_0000. Note that the 440
 894          * strapping options to not support sizes such as 128/256 MB.
 895          *-------------------------------------------------------------------*/
 896         out32r( PCIX0_PIM0LAL, CFG_SDRAM_BASE );
 897         out32r( PCIX0_PIM0LAH, 0 );
 898         out32r( PCIX0_PIM0SA, ~(gd->ram_size - 1) | 1 );
 899         out32r( PCIX0_BAR0, 0 );
 900
 901         /*-------------------------------------------------------------------+
 902          * Program the board's subsystem id/vendor id
 903          *-------------------------------------------------------------------*/
 904         out16r( PCIX0_SBSYSVID, CFG_PCI_SUBSYS_VENDORID );
 905         out16r( PCIX0_SBSYSID, CFG_PCI_SUBSYS_DEVICEID );
 906
 907         out16r( PCIX0_CMD, in16r(PCIX0_CMD) | PCI_COMMAND_MEMORY );
 908 }
 909 #endif  /* defined(CONFIG_PCI) && defined(CFG_PCI_TARGET_INIT) */
 910
 911 /*************************************************************************
 912  *  is_pci_host
 913  *
 914  *      This routine is called to determine if a pci scan should be
 915  *      performed. With various hardware environments (especially cPCI and
 916  *      PPMC) it's insufficient to depend on the state of the arbiter enable
 917  *      bit in the strap register, or generic host/adapter assumptions.
 918  *
 919  *      Rather than hard-code a bad assumption in the general 440 code, the
 920  *      440 pci code requires the board to decide at runtime.
 921  *
 922  *      Return 0 for adapter mode, non-zero for host (monarch) mode.
 923  *
 924  *
 925  ************************************************************************/
 926 #if defined(CONFIG_PCI)
 927 int is_pci_host(struct pci_controller *hose)
 928 {
 929         /* The yucca board is always configured as host. */
 930         return 1;
 931 }
 932 #endif  /* defined(CONFIG_PCI) */
 933
 934 int misc_init_f (void)
 935 {
 936         uint reg;
 937 #if defined(CONFIG_STRESS)
 938         uint i ;
 939         uint disp;
 940 #endif
 941
 942         out16(FPGA_REG10, (in16(FPGA_REG10) &
 943                         ~(FPGA_REG10_AUTO_NEG_DIS|FPGA_REG10_RESET_ETH)) |
 944                                 FPGA_REG10_10MHZ_ENABLE |
 945                                 FPGA_REG10_100MHZ_ENABLE |
 946                                 FPGA_REG10_GIGABIT_ENABLE |
 947                                 FPGA_REG10_FULL_DUPLEX );
 948
 949         udelay(10000);  /* wait 10ms */
 950
 951         out16(FPGA_REG10, (in16(FPGA_REG10) | FPGA_REG10_RESET_ETH));
 952
 953         /* minimal init for PCIe */
 954         /* pci express 0 Endpoint Mode */
 955         mfsdr(SDR0_PE0DLPSET, reg);
 956         reg &= (~0x00400000);
 957         mtsdr(SDR0_PE0DLPSET, reg);
 958         /* pci express 1 Rootpoint  Mode */
 959         mfsdr(SDR0_PE1DLPSET, reg);
 960         reg |= 0x00400000;
 961         mtsdr(SDR0_PE1DLPSET, reg);
 962         /* pci express 2 Rootpoint  Mode */
 963         mfsdr(SDR0_PE2DLPSET, reg);
 964         reg |= 0x00400000;
 965         mtsdr(SDR0_PE2DLPSET, reg);
 966
 967         out16(FPGA_REG1C,(in16 (FPGA_REG1C) &
 968                                 ~FPGA_REG1C_PE0_ROOTPOINT &
 969                                 ~FPGA_REG1C_PE1_ENDPOINT  &
 970                                 ~FPGA_REG1C_PE2_ENDPOINT));
 971
 972 #if defined(CONFIG_STRESS)
 973         /*
 974          * all this setting done by linux only needed by stress an charac. test
 975          * procedure
 976          * PCIe 1 Rootpoint PCIe2 Endpoint
 977          * PCIe 0 FIR Pre-emphasis Filter Coefficients & Transmit Driver
 978          * Power Level
 979          */
 980         for (i = 0, disp = 0; i < 8; i++, disp += 3) {
 981                 mfsdr(SDR0_PE0HSSSET1L0 + disp, reg);
 982                 reg |= 0x33000000;
 983                 mtsdr(SDR0_PE0HSSSET1L0 + disp, reg);
 984         }
 985
 986         /*
 987          * PCIe 1 FIR Pre-emphasis Filter Coefficients & Transmit Driver
 988          * Power Level
 989          */
 990         for (i = 0, disp = 0; i < 4; i++, disp += 3) {
 991                 mfsdr(SDR0_PE1HSSSET1L0 + disp, reg);
 992                 reg |= 0x33000000;
 993                 mtsdr(SDR0_PE1HSSSET1L0 + disp, reg);
 994         }
 995
 996         /*
 997          * PCIE 2 FIR Pre-emphasis Filter Coefficients & Transmit Driver
 998          * Power Level
 999          */
1000         for (i = 0, disp = 0; i < 4; i++, disp += 3) {
1001                 mfsdr(SDR0_PE2HSSSET1L0 + disp, reg);
1002                 reg |= 0x33000000;
1003                 mtsdr(SDR0_PE2HSSSET1L0 + disp, reg);
1004         }
1005
1006         reg = 0x21242222;
1007         mtsdr(SDR0_PE2UTLSET1, reg);
1008         reg = 0x11000000;
1009         mtsdr(SDR0_PE2UTLSET2, reg);
1010         /* pci express 1 Endpoint  Mode */
1011         reg = 0x00004000;
1012         mtsdr(SDR0_PE2DLPSET, reg);
1013
1014         mtsdr(SDR0_UART1, 0x2080005a);  /* patch for TG */
1015 #endif
1016         return 0;
1017 }
1018
1019 void fpga_init(void)
1020 {
1021         /*
1022          * by default sdram access is disabled by fpga
1023          */
1024         out16(FPGA_REG10, (in16 (FPGA_REG10) |
1025                                 FPGA_REG10_SDRAM_ENABLE |
1026                                 FPGA_REG10_ENABLE_DISPLAY ));
1027
1028         return;
1029 }
1030
1031 #ifdef CONFIG_POST
1032 /*
1033  * Returns 1 if keys pressed to start the power-on long-running tests
1034  * Called from board_init_f().
1035  */
1036 int post_hotkeys_pressed(void)
1037 {
1038         return (ctrlc());
1039 }
1040 #endif
1041
1042 /*---------------------------------------------------------------------------+
1043  | onboard_pci_arbiter_selected => from EPLD
1044  +---------------------------------------------------------------------------*/
1045 int onboard_pci_arbiter_selected(int core_pci)
1046 {
1047 #if 0
1048         unsigned long onboard_pci_arbiter_sel;
1049
1050         onboard_pci_arbiter_sel = in16(FPGA_REG0) & FPGA_REG0_EXT_ARB_SEL_MASK;
1051
1052         if (onboard_pci_arbiter_sel == FPGA_REG0_EXT_ARB_SEL_EXTERNAL)
1053                 return (BOARD_OPTION_SELECTED);
1054         else
1055 #endif
1056         return (BOARD_OPTION_NOT_SELECTED);
1057 }
1058
1059 /*---------------------------------------------------------------------------+
1060  | ppcMfcpr.
1061  +---------------------------------------------------------------------------*/
1062 unsigned long ppcMfcpr(unsigned long cpr_reg)
1063 {
1064         unsigned long msr;
1065         unsigned long cpr_cfgaddr_temp;
1066         unsigned long cpr_value;
1067
1068         msr = (mfmsr () & ~(MSR_EE));
1069         cpr_cfgaddr_temp =  mfdcr(CPR0_CFGADDR);
1070         mtdcr(CPR0_CFGADDR, cpr_reg);
1071         cpr_value =  mfdcr(CPR0_CFGDATA);
1072         mtdcr(CPR0_CFGADDR, cpr_cfgaddr_temp);
1073         mtmsr(msr);
1074
1075         return (cpr_value);
1076 }
1077
1078 /*----------------------------------------------------------------------------+
1079 | Indirect Access of the System DCR's (SDR)
1080 | ppcMfsdr
1081 +----------------------------------------------------------------------------*/
1082 unsigned long ppcMfsdr(unsigned long sdr_reg)
1083 {
1084         unsigned long msr;
1085         unsigned long sdr_cfgaddr_temp;
1086         unsigned long sdr_value;
1087
1088         msr = (mfmsr () & ~(MSR_EE));
1089         sdr_cfgaddr_temp =  mfdcr(SDR0_CFGADDR);
1090         mtdcr(SDR0_CFGADDR, sdr_reg);
1091         sdr_value =  mfdcr(SDR0_CFGDATA);
1092         mtdcr(SDR0_CFGADDR, sdr_cfgaddr_temp);
1093         mtmsr(msr);
1094
1095         return (sdr_value);
1096 }