uboot/include/configs/TQM855M.h
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   1/*
   2 * (C) Copyright 2000-2008
   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
  24/*
  25 * board/config.h - configuration options, board specific
  26 */
  27
  28#ifndef __CONFIG_H
  29#define __CONFIG_H
  30
  31/*
  32 * High Level Configuration Options
  33 * (easy to change)
  34 */
  35
  36#define CONFIG_MPC855           1       /* This is a MPC855 CPU         */
  37#define CONFIG_TQM855M          1       /* ...on a TQM8xxM module       */
  38
  39#define CONFIG_SYS_TEXT_BASE    0x40000000
  40
  41#define CONFIG_8xx_CONS_SMC1    1       /* Console is on SMC1           */
  42#define CONFIG_SYS_SMC_RXBUFLEN 128
  43#define CONFIG_SYS_MAXIDLE      10
  44#define CONFIG_BAUDRATE         115200  /* console baudrate = 115kbps   */
  45
  46#define CONFIG_BOOTCOUNT_LIMIT
  47
  48#define CONFIG_BOOTDELAY        5       /* autoboot after 5 seconds     */
  49
  50#define CONFIG_BOARD_TYPES      1       /* support board types          */
  51
  52#define CONFIG_PREBOOT  "echo;" \
  53        "echo Type \\\"run flash_nfs\\\" to mount root filesystem over NFS;" \
  54        "echo"
  55
  56#undef  CONFIG_BOOTARGS
  57
  58#define CONFIG_EXTRA_ENV_SETTINGS                                       \
  59        "netdev=eth0\0"                                                 \
  60        "nfsargs=setenv bootargs root=/dev/nfs rw "                     \
  61                "nfsroot=${serverip}:${rootpath}\0"                     \
  62        "ramargs=setenv bootargs root=/dev/ram rw\0"                    \
  63        "addip=setenv bootargs ${bootargs} "                            \
  64                "ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}"      \
  65                ":${hostname}:${netdev}:off panic=1\0"                  \
  66        "flash_nfs=run nfsargs addip;"                                  \
  67                "bootm ${kernel_addr}\0"                                \
  68        "flash_self=run ramargs addip;"                                 \
  69                "bootm ${kernel_addr} ${ramdisk_addr}\0"                \
  70        "net_nfs=tftp 200000 ${bootfile};run nfsargs addip;bootm\0"     \
  71        "rootpath=/opt/eldk/ppc_8xx\0"                                  \
  72        "hostname=TQM855M\0"                                            \
  73        "bootfile=TQM855M/uImage\0"                                     \
  74        "fdt_addr=40080000\0"                                           \
  75        "kernel_addr=400A0000\0"                                        \
  76        "ramdisk_addr=40280000\0"                                       \
  77        "u-boot=TQM855M/u-image.bin\0"                                  \
  78        "load=tftp 200000 ${u-boot}\0"                                  \
  79        "update=prot off 40000000 +${filesize};"                        \
  80                "era 40000000 +${filesize};"                            \
  81                "cp.b 200000 40000000 ${filesize};"                     \
  82                "sete filesize;save\0"                                  \
  83        ""
  84#define CONFIG_BOOTCOMMAND      "run flash_self"
  85
  86#define CONFIG_LOADS_ECHO       1       /* echo on for serial download  */
  87#undef  CONFIG_SYS_LOADS_BAUD_CHANGE            /* don't allow baudrate change  */
  88
  89#undef  CONFIG_WATCHDOG                 /* watchdog disabled            */
  90
  91#define CONFIG_STATUS_LED       1       /* Status LED enabled           */
  92
  93#undef  CONFIG_CAN_DRIVER               /* CAN Driver support disabled  */
  94
  95/* enable I2C and select the hardware/software driver */
  96#undef  CONFIG_HARD_I2C                 /* I2C with hardware support    */
  97#define CONFIG_SOFT_I2C         1       /* I2C bit-banged               */
  98
  99#define CONFIG_SYS_I2C_SPEED            93000   /* 93 kHz is supposed to work   */
 100#define CONFIG_SYS_I2C_SLAVE            0xFE
 101
 102#ifdef CONFIG_SOFT_I2C
 103/*
 104 * Software (bit-bang) I2C driver configuration
 105 */
 106#define PB_SCL          0x00000020      /* PB 26 */
 107#define PB_SDA          0x00000010      /* PB 27 */
 108
 109#define I2C_INIT        (immr->im_cpm.cp_pbdir |=  PB_SCL)
 110#define I2C_ACTIVE      (immr->im_cpm.cp_pbdir |=  PB_SDA)
 111#define I2C_TRISTATE    (immr->im_cpm.cp_pbdir &= ~PB_SDA)
 112#define I2C_READ        ((immr->im_cpm.cp_pbdat & PB_SDA) != 0)
 113#define I2C_SDA(bit)    if(bit) immr->im_cpm.cp_pbdat |=  PB_SDA; \
 114                        else    immr->im_cpm.cp_pbdat &= ~PB_SDA
 115#define I2C_SCL(bit)    if(bit) immr->im_cpm.cp_pbdat |=  PB_SCL; \
 116                        else    immr->im_cpm.cp_pbdat &= ~PB_SCL
 117#define I2C_DELAY       udelay(2)       /* 1/4 I2C clock duration */
 118#endif  /* CONFIG_SOFT_I2C */
 119
 120#define CONFIG_SYS_I2C_EEPROM_ADDR      0x50            /* EEPROM AT24C64       */
 121#define CONFIG_SYS_I2C_EEPROM_ADDR_LEN  2               /* two byte address     */
 122#if 0
 123#define CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS   10      /* takes up to 10 msec  */
 124#define CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW 0x01
 125#define CONFIG_SYS_EEPROM_PAGE_WRITE_BITS       5
 126#endif
 127
 128/*
 129 * BOOTP options
 130 */
 131#define CONFIG_BOOTP_SUBNETMASK
 132#define CONFIG_BOOTP_GATEWAY
 133#define CONFIG_BOOTP_HOSTNAME
 134#define CONFIG_BOOTP_BOOTPATH
 135#define CONFIG_BOOTP_BOOTFILESIZE
 136
 137
 138#define CONFIG_MAC_PARTITION
 139#define CONFIG_DOS_PARTITION
 140
 141#define CONFIG_RTC_MPC8xx               /* use internal RTC of MPC8xx   */
 142
 143
 144/*
 145 * Command line configuration.
 146 */
 147#include <config_cmd_default.h>
 148
 149#define CONFIG_CMD_ASKENV
 150#define CONFIG_CMD_DATE
 151#define CONFIG_CMD_DHCP
 152#define CONFIG_CMD_ELF
 153#define CONFIG_CMD_EXT2
 154#define CONFIG_CMD_EEPROM
 155#define CONFIG_CMD_IDE
 156#define CONFIG_CMD_JFFS2
 157#define CONFIG_CMD_NFS
 158#define CONFIG_CMD_SNTP
 159
 160
 161#define CONFIG_NETCONSOLE
 162
 163
 164/*
 165 * Miscellaneous configurable options
 166 */
 167#define CONFIG_SYS_LONGHELP                     /* undef to save memory         */
 168#define CONFIG_SYS_PROMPT               "=> "   /* Monitor Command Prompt       */
 169
 170#define CONFIG_CMDLINE_EDITING  1       /* add command line history     */
 171#define CONFIG_SYS_HUSH_PARSER          1       /* Use the HUSH parser          */
 172
 173#if defined(CONFIG_CMD_KGDB)
 174#define CONFIG_SYS_CBSIZE               1024    /* Console I/O Buffer Size      */
 175#else
 176#define CONFIG_SYS_CBSIZE               256     /* Console I/O Buffer Size      */
 177#endif
 178#define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE+sizeof(CONFIG_SYS_PROMPT)+16) /* Print Buffer Size */
 179#define CONFIG_SYS_MAXARGS              16      /* max number of command args   */
 180#define CONFIG_SYS_BARGSIZE     CONFIG_SYS_CBSIZE       /* Boot Argument Buffer Size    */
 181
 182#define CONFIG_SYS_MEMTEST_START        0x0400000       /* memtest works on     */
 183#define CONFIG_SYS_MEMTEST_END          0x0C00000       /* 4 ... 12 MB in DRAM  */
 184
 185#define CONFIG_SYS_LOAD_ADDR            0x100000        /* default load address */
 186
 187#define CONFIG_SYS_HZ                   1000    /* decrementer freq: 1 ms ticks */
 188
 189/*
 190 * Low Level Configuration Settings
 191 * (address mappings, register initial values, etc.)
 192 * You should know what you are doing if you make changes here.
 193 */
 194/*-----------------------------------------------------------------------
 195 * Internal Memory Mapped Register
 196 */
 197#define CONFIG_SYS_IMMR         0xFFF00000
 198
 199/*-----------------------------------------------------------------------
 200 * Definitions for initial stack pointer and data area (in DPRAM)
 201 */
 202#define CONFIG_SYS_INIT_RAM_ADDR        CONFIG_SYS_IMMR
 203#define CONFIG_SYS_INIT_RAM_SIZE        0x2F00  /* Size of used area in DPRAM   */
 204#define CONFIG_SYS_GBL_DATA_OFFSET      (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
 205#define CONFIG_SYS_INIT_SP_OFFSET       CONFIG_SYS_GBL_DATA_OFFSET
 206
 207/*-----------------------------------------------------------------------
 208 * Start addresses for the final memory configuration
 209 * (Set up by the startup code)
 210 * Please note that CONFIG_SYS_SDRAM_BASE _must_ start at 0
 211 */
 212#define CONFIG_SYS_SDRAM_BASE           0x00000000
 213#define CONFIG_SYS_FLASH_BASE           0x40000000
 214#define CONFIG_SYS_MONITOR_LEN          (256 << 10)     /* Reserve 256 kB for Monitor   */
 215#define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_FLASH_BASE
 216#define CONFIG_SYS_MALLOC_LEN           (128 << 10)     /* Reserve 128 kB for malloc()  */
 217
 218/*
 219 * For booting Linux, the board info and command line data
 220 * have to be in the first 8 MB of memory, since this is
 221 * the maximum mapped by the Linux kernel during initialization.
 222 */
 223#define CONFIG_SYS_BOOTMAPSZ            (8 << 20)       /* Initial Memory map for Linux */
 224
 225/*-----------------------------------------------------------------------
 226 * FLASH organization
 227 */
 228
 229/* use CFI flash driver */
 230#define CONFIG_SYS_FLASH_CFI            1       /* Flash is CFI conformant */
 231#define CONFIG_FLASH_CFI_DRIVER 1       /* Use the common driver */
 232#define CONFIG_SYS_FLASH_BANKS_LIST     { CONFIG_SYS_FLASH_BASE }
 233#define CONFIG_SYS_FLASH_EMPTY_INFO
 234#define CONFIG_SYS_FLASH_USE_BUFFER_WRITE       1
 235#define CONFIG_SYS_MAX_FLASH_BANKS      1       /* max number of memory banks */
 236#define CONFIG_SYS_MAX_FLASH_SECT       256     /* max number of sectors on one chip */
 237
 238#define CONFIG_ENV_IS_IN_FLASH  1
 239#define CONFIG_ENV_OFFSET               0x40000 /*   Offset   of Environment Sector     */
 240#define CONFIG_ENV_SIZE         0x08000 /* Total Size of Environment            */
 241#define CONFIG_ENV_SECT_SIZE    0x20000 /* Total Size of Environment Sector     */
 242
 243/* Address and size of Redundant Environment Sector     */
 244#define CONFIG_ENV_OFFSET_REDUND        (CONFIG_ENV_OFFSET+CONFIG_ENV_SECT_SIZE)
 245#define CONFIG_ENV_SIZE_REDUND  (CONFIG_ENV_SIZE)
 246
 247#define CONFIG_SYS_USE_PPCENV                   /* Environment embedded in sect .ppcenv */
 248
 249#define CONFIG_MISC_INIT_R              /* Make sure to remap flashes correctly */
 250
 251/*-----------------------------------------------------------------------
 252 * Dynamic MTD partition support
 253 */
 254#define CONFIG_CMD_MTDPARTS
 255#define CONFIG_MTD_DEVICE               /* needed for mtdparts commands */
 256#define CONFIG_FLASH_CFI_MTD
 257#define MTDIDS_DEFAULT          "nor0=TQM8xxM-0"
 258
 259#define MTDPARTS_DEFAULT        "mtdparts=TQM8xxM-0:512k(u-boot),"      \
 260                                                "128k(dtb),"            \
 261                                                "1920k(kernel),"        \
 262                                                "5632(rootfs),"         \
 263                                                "4m(data)"
 264
 265/*-----------------------------------------------------------------------
 266 * Hardware Information Block
 267 */
 268#define CONFIG_SYS_HWINFO_OFFSET        0x0003FFC0      /* offset of HW Info block */
 269#define CONFIG_SYS_HWINFO_SIZE          0x00000040      /* size   of HW Info block */
 270#define CONFIG_SYS_HWINFO_MAGIC 0x54514D38      /* 'TQM8' */
 271
 272/*-----------------------------------------------------------------------
 273 * Cache Configuration
 274 */
 275#define CONFIG_SYS_CACHELINE_SIZE       16      /* For all MPC8xx CPUs                  */
 276#if defined(CONFIG_CMD_KGDB)
 277#define CONFIG_SYS_CACHELINE_SHIFT      4       /* log base 2 of the above value        */
 278#endif
 279
 280/*-----------------------------------------------------------------------
 281 * SYPCR - System Protection Control                            11-9
 282 * SYPCR can only be written once after reset!
 283 *-----------------------------------------------------------------------
 284 * Software & Bus Monitor Timer max, Bus Monitor enable, SW Watchdog freeze
 285 */
 286#if defined(CONFIG_WATCHDOG)
 287#define CONFIG_SYS_SYPCR        (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | \
 288                         SYPCR_SWE  | SYPCR_SWRI| SYPCR_SWP)
 289#else
 290#define CONFIG_SYS_SYPCR        (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | SYPCR_SWP)
 291#endif
 292
 293/*-----------------------------------------------------------------------
 294 * SIUMCR - SIU Module Configuration                            11-6
 295 *-----------------------------------------------------------------------
 296 * PCMCIA config., multi-function pin tri-state
 297 */
 298#ifndef CONFIG_CAN_DRIVER
 299#define CONFIG_SYS_SIUMCR       (SIUMCR_DBGC00 | SIUMCR_DBPC00 | SIUMCR_MLRC01)
 300#else   /* we must activate GPL5 in the SIUMCR for CAN */
 301#define CONFIG_SYS_SIUMCR       (SIUMCR_DBGC11 | SIUMCR_DBPC00 | SIUMCR_MLRC01)
 302#endif  /* CONFIG_CAN_DRIVER */
 303
 304/*-----------------------------------------------------------------------
 305 * TBSCR - Time Base Status and Control                         11-26
 306 *-----------------------------------------------------------------------
 307 * Clear Reference Interrupt Status, Timebase freezing enabled
 308 */
 309#define CONFIG_SYS_TBSCR        (TBSCR_REFA | TBSCR_REFB | TBSCR_TBF)
 310
 311/*-----------------------------------------------------------------------
 312 * RTCSC - Real-Time Clock Status and Control Register          11-27
 313 *-----------------------------------------------------------------------
 314 */
 315#define CONFIG_SYS_RTCSC        (RTCSC_SEC | RTCSC_ALR | RTCSC_RTF| RTCSC_RTE)
 316
 317/*-----------------------------------------------------------------------
 318 * PISCR - Periodic Interrupt Status and Control                11-31
 319 *-----------------------------------------------------------------------
 320 * Clear Periodic Interrupt Status, Interrupt Timer freezing enabled
 321 */
 322#define CONFIG_SYS_PISCR        (PISCR_PS | PISCR_PITF)
 323
 324/*-----------------------------------------------------------------------
 325 * PLPRCR - PLL, Low-Power, and Reset Control Register          15-30
 326 *-----------------------------------------------------------------------
 327 * Reset PLL lock status sticky bit, timer expired status bit and timer
 328 * interrupt status bit
 329 */
 330#define CONFIG_SYS_PLPRCR       (PLPRCR_SPLSS | PLPRCR_TEXPS | PLPRCR_TMIST)
 331
 332/*-----------------------------------------------------------------------
 333 * SCCR - System Clock and reset Control Register               15-27
 334 *-----------------------------------------------------------------------
 335 * Set clock output, timebase and RTC source and divider,
 336 * power management and some other internal clocks
 337 */
 338#define SCCR_MASK       SCCR_EBDF11
 339#define CONFIG_SYS_SCCR (SCCR_COM00   | SCCR_DFSYNC00 | SCCR_DFBRG00  | \
 340                         SCCR_DFNL000 | SCCR_DFNH000  | SCCR_DFLCD000 | \
 341                         SCCR_DFALCD00)
 342
 343/*-----------------------------------------------------------------------
 344 * PCMCIA stuff
 345 *-----------------------------------------------------------------------
 346 *
 347 */
 348#define CONFIG_SYS_PCMCIA_MEM_ADDR      (0xE0000000)
 349#define CONFIG_SYS_PCMCIA_MEM_SIZE      ( 64 << 20 )
 350#define CONFIG_SYS_PCMCIA_DMA_ADDR      (0xE4000000)
 351#define CONFIG_SYS_PCMCIA_DMA_SIZE      ( 64 << 20 )
 352#define CONFIG_SYS_PCMCIA_ATTRB_ADDR    (0xE8000000)
 353#define CONFIG_SYS_PCMCIA_ATTRB_SIZE    ( 64 << 20 )
 354#define CONFIG_SYS_PCMCIA_IO_ADDR       (0xEC000000)
 355#define CONFIG_SYS_PCMCIA_IO_SIZE       ( 64 << 20 )
 356
 357/*-----------------------------------------------------------------------
 358 * IDE/ATA stuff (Supports IDE harddisk on PCMCIA Adapter)
 359 *-----------------------------------------------------------------------
 360 */
 361
 362#define CONFIG_IDE_8xx_PCCARD   1       /* Use IDE with PC Card Adapter */
 363
 364#undef  CONFIG_IDE_8xx_DIRECT           /* Direct IDE    not supported  */
 365#undef  CONFIG_IDE_LED                  /* LED   for ide not supported  */
 366#undef  CONFIG_IDE_RESET                /* reset for ide not supported  */
 367
 368#define CONFIG_SYS_IDE_MAXBUS           1       /* max. 1 IDE bus               */
 369#define CONFIG_SYS_IDE_MAXDEVICE        1       /* max. 1 drive per IDE bus     */
 370
 371#define CONFIG_SYS_ATA_IDE0_OFFSET      0x0000
 372
 373#define CONFIG_SYS_ATA_BASE_ADDR        CONFIG_SYS_PCMCIA_MEM_ADDR
 374
 375/* Offset for data I/O                  */
 376#define CONFIG_SYS_ATA_DATA_OFFSET      (CONFIG_SYS_PCMCIA_MEM_SIZE + 0x320)
 377
 378/* Offset for normal register accesses  */
 379#define CONFIG_SYS_ATA_REG_OFFSET       (2 * CONFIG_SYS_PCMCIA_MEM_SIZE + 0x320)
 380
 381/* Offset for alternate registers       */
 382#define CONFIG_SYS_ATA_ALT_OFFSET       0x0100
 383
 384/*-----------------------------------------------------------------------
 385 *
 386 *-----------------------------------------------------------------------
 387 *
 388 */
 389#define CONFIG_SYS_DER  0
 390
 391/*
 392 * Init Memory Controller:
 393 *
 394 * BR0/1 and OR0/1 (FLASH)
 395 */
 396
 397#define FLASH_BASE0_PRELIM      0x40000000      /* FLASH bank #0        */
 398#define FLASH_BASE1_PRELIM      0x60000000      /* FLASH bank #0        */
 399
 400/* used to re-map FLASH both when starting from SRAM or FLASH:
 401 * restrict access enough to keep SRAM working (if any)
 402 * but not too much to meddle with FLASH accesses
 403 */
 404#define CONFIG_SYS_REMAP_OR_AM          0x80000000      /* OR addr mask */
 405#define CONFIG_SYS_PRELIM_OR_AM 0xE0000000      /* OR addr mask */
 406
 407/*
 408 * FLASH timing:
 409 */
 410#define CONFIG_SYS_OR_TIMING_FLASH      (OR_ACS_DIV1  | OR_TRLX | OR_CSNT_SAM | \
 411                                 OR_SCY_3_CLK | OR_EHTR | OR_BI)
 412
 413#define CONFIG_SYS_OR0_REMAP    (CONFIG_SYS_REMAP_OR_AM  | CONFIG_SYS_OR_TIMING_FLASH)
 414#define CONFIG_SYS_OR0_PRELIM   (CONFIG_SYS_PRELIM_OR_AM | CONFIG_SYS_OR_TIMING_FLASH)
 415#define CONFIG_SYS_BR0_PRELIM   ((FLASH_BASE0_PRELIM & BR_BA_MSK) | BR_V )
 416
 417#define CONFIG_SYS_OR1_REMAP    CONFIG_SYS_OR0_REMAP
 418#define CONFIG_SYS_OR1_PRELIM   CONFIG_SYS_OR0_PRELIM
 419#define CONFIG_SYS_BR1_PRELIM   ((FLASH_BASE1_PRELIM & BR_BA_MSK) | BR_V )
 420
 421/*
 422 * BR2/3 and OR2/3 (SDRAM)
 423 *
 424 */
 425#define SDRAM_BASE2_PRELIM      0x00000000      /* SDRAM bank #0        */
 426#define SDRAM_BASE3_PRELIM      0x20000000      /* SDRAM bank #1        */
 427#define SDRAM_MAX_SIZE          0x04000000      /* max 64 MB per bank   */
 428
 429/* SDRAM timing: Multiplexed addresses, GPL5 output to GPL5_A (don't care)      */
 430#define CONFIG_SYS_OR_TIMING_SDRAM      0x00000A00
 431
 432#define CONFIG_SYS_OR2_PRELIM   (CONFIG_SYS_PRELIM_OR_AM | CONFIG_SYS_OR_TIMING_SDRAM )
 433#define CONFIG_SYS_BR2_PRELIM   ((SDRAM_BASE2_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )
 434
 435#ifndef CONFIG_CAN_DRIVER
 436#define CONFIG_SYS_OR3_PRELIM   CONFIG_SYS_OR2_PRELIM
 437#define CONFIG_SYS_BR3_PRELIM   ((SDRAM_BASE3_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )
 438#else   /* CAN uses CS3#, so we can have only one SDRAM bank anyway */
 439#define CONFIG_SYS_CAN_BASE             0xC0000000      /* CAN mapped at 0xC0000000     */
 440#define CONFIG_SYS_CAN_OR_AM            0xFFFF8000      /* 32 kB address mask           */
 441#define CONFIG_SYS_OR3_CAN              (CONFIG_SYS_CAN_OR_AM | OR_G5LA | OR_BI)
 442#define CONFIG_SYS_BR3_CAN              ((CONFIG_SYS_CAN_BASE & BR_BA_MSK) | \
 443                                        BR_PS_8 | BR_MS_UPMB | BR_V )
 444#endif  /* CONFIG_CAN_DRIVER */
 445
 446/*
 447 * Memory Periodic Timer Prescaler
 448 *
 449 * The Divider for PTA (refresh timer) configuration is based on an
 450 * example SDRAM configuration (64 MBit, one bank). The adjustment to
 451 * the number of chip selects (NCS) and the actually needed refresh
 452 * rate is done by setting MPTPR.
 453 *
 454 * PTA is calculated from
 455 *      PTA = (gclk * Trefresh) / ((2 ^ (2 * DFBRG)) * PTP * NCS)
 456 *
 457 *      gclk      CPU clock (not bus clock!)
 458 *      Trefresh  Refresh cycle * 4 (four word bursts used)
 459 *
 460 * 4096  Rows from SDRAM example configuration
 461 * 1000  factor s -> ms
 462 *   32  PTP (pre-divider from MPTPR) from SDRAM example configuration
 463 *    4  Number of refresh cycles per period
 464 *   64  Refresh cycle in ms per number of rows
 465 * --------------------------------------------
 466 * Divider = 4096 * 32 * 1000 / (4 * 64) = 512000
 467 *
 468 * 50 MHz => 50.000.000 / Divider =  98
 469 * 66 Mhz => 66.000.000 / Divider = 129
 470 * 80 Mhz => 80.000.000 / Divider = 156
 471 */
 472
 473#define CONFIG_SYS_PTA_PER_CLK  ((4096 * 32 * 1000) / (4 * 64))
 474#define CONFIG_SYS_MAMR_PTA     98
 475
 476/*
 477 * For 16 MBit, refresh rates could be 31.3 us
 478 * (= 64 ms / 2K = 125 / quad bursts).
 479 * For a simpler initialization, 15.6 us is used instead.
 480 *
 481 * #define CONFIG_SYS_MPTPR_2BK_2K      MPTPR_PTP_DIV32         for 2 banks
 482 * #define CONFIG_SYS_MPTPR_1BK_2K      MPTPR_PTP_DIV64         for 1 bank
 483 */
 484#define CONFIG_SYS_MPTPR_2BK_4K MPTPR_PTP_DIV16         /* setting for 2 banks  */
 485#define CONFIG_SYS_MPTPR_1BK_4K MPTPR_PTP_DIV32         /* setting for 1 bank   */
 486
 487/* refresh rate 7.8 us (= 64 ms / 8K = 31.2 / quad bursts) for 256 MBit         */
 488#define CONFIG_SYS_MPTPR_2BK_8K MPTPR_PTP_DIV8          /* setting for 2 banks  */
 489#define CONFIG_SYS_MPTPR_1BK_8K MPTPR_PTP_DIV16         /* setting for 1 bank   */
 490
 491/*
 492 * MAMR settings for SDRAM
 493 */
 494
 495/* 8 column SDRAM */
 496#define CONFIG_SYS_MAMR_8COL    ((CONFIG_SYS_MAMR_PTA << MAMR_PTA_SHIFT)  | MAMR_PTAE       |   \
 497                         MAMR_AMA_TYPE_0 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A11 |   \
 498                         MAMR_RLFA_1X    | MAMR_WLFA_1X    | MAMR_TLFA_4X)
 499/* 9 column SDRAM */
 500#define CONFIG_SYS_MAMR_9COL    ((CONFIG_SYS_MAMR_PTA << MAMR_PTA_SHIFT)  | MAMR_PTAE       |   \
 501                         MAMR_AMA_TYPE_1 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A10 |   \
 502                         MAMR_RLFA_1X    | MAMR_WLFA_1X    | MAMR_TLFA_4X)
 503
 504#define CONFIG_SCC1_ENET
 505#define CONFIG_FEC_ENET
 506#define CONFIG_ETHPRIME         "SCC"
 507
 508/* pass open firmware flat tree */
 509#define CONFIG_OF_LIBFDT        1
 510#define CONFIG_OF_BOARD_SETUP   1
 511#define CONFIG_HWCONFIG         1
 512
 513#endif  /* __CONFIG_H */
 514