include/configs/NX823.h

   1 /*
   2  * (C) Copyright 2001
   3  * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
   4  *
   5  * (C) Copyright 2001
   6  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   7  *
   8  * See file CREDITS for list of people who contributed to this
   9  * project.
  10  *
  11  * This program is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU General Public License as
  13  * published by the Free Software Foundation; either version 2 of
  14  * the License, or (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  24  * MA 02111-1307 USA
  25  */
  26
  27 /*
  28  * board/config.h - configuration options, board specific
  29  */
  30
  31 #ifndef __CONFIG_H
  32 #define __CONFIG_H
  33
  34 /*
  35  * High Level Configuration Options
  36  * (easy to change)
  37  */
  38
  39 #define CONFIG_MPC823           1       /* This is a MPC823 CPU     */
  40 #define CONFIG_NX823            1       /* ...on a NEXUS 823  module    */
  41
  42 /*#define  CONFIG_VIDEO         1 */
  43
  44 #define CONFIG_8xx_GCLK_FREQ    MPC8XX_SPEED
  45 #define CONFIG_8xx_CONS_SMC1    1       /* Console is on SMC1       */
  46 #undef  CONFIG_8xx_CONS_SMC2
  47 #undef  CONFIG_8xx_CONS_NONE
  48 #define CONFIG_BAUDRATE 57600   /* console baudrate = 115kbps   */
  49 #define CONFIG_BOOTDELAY        2       /* autoboot after 2 seconds */
  50 #define CONFIG_BOOTARGS         "ramdisk_size=8000 "\
  51                                 "root=/dev/nfs rw nfsroot=10.77.77.250:/ppcroot "\
  52                                 "nfsaddrs=10.77.77.20:10.77.77.250"
  53 #define CONFIG_BOOTCOMMAND      "bootm 400e0000"
  54
  55 #define CONFIG_LOADS_ECHO       1       /* echo on for serial download  */
  56 #undef  CFG_LOADS_BAUD_CHANGE           /* don't allow baudrate change  */
  57 #undef  CONFIG_WATCHDOG                 /* watchdog disabled, for now       */
  58 #define CONFIG_AUTOSCRIPT
  59
  60 /*
  61  * BOOTP options
  62  */
  63 #define CONFIG_BOOTP_SUBNETMASK
  64 #define CONFIG_BOOTP_GATEWAY
  65 #define CONFIG_BOOTP_HOSTNAME
  66 #define CONFIG_BOOTP_BOOTPATH
  67 #define CONFIG_BOOTP_BOOTFILESIZE
  68
  69
  70 /*
  71  * Command line configuration.
  72  */
  73 #include <config_cmd_default.h>
  74
  75 #define CONFIG_CMD_AUTOSCRIPT
  76
  77
  78 /* call various generic functions */
  79 #define CONFIG_MISC_INIT_R
  80
  81 /*
  82  * Miscellaneous configurable options
  83  */
  84 #define CFG_LONGHELP                    /* undef to save memory     */
  85 #define CFG_PROMPT              "=> "   /* Monitor Command Prompt   */
  86 #if defined(CONFIG_CMD_KGDB)
  87 #define CFG_CBSIZE              1024    /* Console I/O Buffer Size  */
  88 #else
  89 #define CFG_CBSIZE              256     /* Console I/O Buffer Size  */
  90 #endif
  91 #define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16)   /* Print Buffer Size */
  92 #define CFG_MAXARGS             16      /* max number of command args   */
  93 #define CFG_BARGSIZE    CFG_CBSIZE      /* Boot Argument Buffer Size    */
  94
  95 #define CFG_MEMTEST_START       0x0400000       /* memtest works on */
  96 #define CFG_MEMTEST_END         0x0C00000       /* 4 ... 12 MB in DRAM  */
  97
  98 #define CFG_LOAD_ADDR           0x100000        /* default load address */
  99
 100 #define CFG_HZ                  1000    /* decrementer freq: 1 ms ticks */
 101
 102 #define CFG_BAUDRATE_TABLE      { 9600, 19200, 38400, 57600, 115200 }
 103
 104 /*
 105  * Low Level Configuration Settings
 106  * (address mappings, register initial values, etc.)
 107  * You should know what you are doing if you make changes here.
 108  */
 109 /*-----------------------------------------------------------------------
 110  * Internal Memory Mapped Register
 111  */
 112 #define CFG_IMMR                0xFFF00000
 113
 114 /*-----------------------------------------------------------------------
 115  * Definitions for initial stack pointer and data area (in DPRAM)
 116  */
 117 #define CFG_INIT_RAM_ADDR       CFG_IMMR
 118 #define CFG_INIT_RAM_END        0x2F00  /* End of used area in DPRAM    */
 119 #define CFG_GBL_DATA_SIZE       64      /* size in bytes reserved for initial data */
 120 #define CFG_GBL_DATA_OFFSET     (CFG_INIT_RAM_END - CFG_GBL_DATA_SIZE)
 121 #define CFG_INIT_SP_OFFSET      CFG_GBL_DATA_OFFSET
 122
 123 /*-----------------------------------------------------------------------
 124  * Start addresses for the final memory configuration
 125  * (Set up by the startup code)
 126  * Please note that CFG_SDRAM_BASE _must_ start at 0
 127  */
 128 #define CFG_SDRAM_BASE          0x00000000
 129 #define CFG_FLASH_BASE          0x40000000
 130 #define CFG_MONITOR_LEN         (128 << 10)     /* Reserve 128 kB for Monitor   */
 131 #define CFG_MONITOR_BASE        CFG_FLASH_BASE
 132 #define CFG_MALLOC_LEN          (128 << 10)     /* Reserve 128 kB for malloc()  */
 133
 134 /*
 135  * For booting Linux, the board info and command line data
 136  * have to be in the first 8 MB of memory, since this is
 137  * the maximum mapped by the Linux kernel during initialization.
 138  */
 139 #define CFG_BOOTMAPSZ           (8 << 20)       /* Initial Memory map for Linux */
 140
 141 /*-----------------------------------------------------------------------
 142  * FLASH organization
 143  */
 144 #define CFG_MAX_FLASH_BANKS     1       /* max number of memory banks       */
 145 #define CFG_MAX_FLASH_SECT      128     /* max number of sectors on one chip    */
 146
 147 #define CFG_FLASH_ERASE_TOUT    120000  /* Timeout for Flash Erase (in ms)  */
 148 #define CFG_FLASH_WRITE_TOUT    500     /* Timeout for Flash Write (in ms)  */
 149
 150 #define CFG_ENV_IS_IN_FLASH     1
 151 #define xEMBED
 152 #ifdef  EMBED
 153 #define CFG_ENV_SIZE            0x200   /* FIXME How big when embedded?? */
 154 #define CFG_ENV_ADDR            CFG_MONITOR_BASE
 155 #else
 156 #define CFG_ENV_ADDR            0x40020000      /* absolute address for now   */
 157 #define CFG_ENV_SIZE            0x20000 /* 8K ouch, this may later be */
 158 #endif
 159
 160 #define CFG_FLASH_SN_BASE       0x4001fff0      /* programmer automagically puts    */
 161 #define CFG_FLASH_SN_SECTOR     0x40000000      /* a serial number here             */
 162 #define CFG_FLASH_SN_BYTES      8
 163
 164 /*-----------------------------------------------------------------------
 165  * Cache Configuration
 166  */
 167 #define CFG_CACHELINE_SIZE      16      /* For all MPC8xx CPUs          */
 168 #if defined(CONFIG_CMD_KGDB)
 169 #define CFG_CACHELINE_SHIFT     4       /* log base 2 of the above value    */
 170 #endif
 171
 172 /*-----------------------------------------------------------------------
 173  * SYPCR - System Protection Control                            11-9
 174  * SYPCR can only be written once after reset!
 175  *-----------------------------------------------------------------------
 176  * Software & Bus Monitor Timer max, Bus Monitor enable, SW Watchdog freeze
 177  */
 178 #if defined(CONFIG_WATCHDOG)
 179 #define CFG_SYPCR       (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | \
 180                          SYPCR_SWE  | SYPCR_SWP)
 181 #else
 182 #define CFG_SYPCR       (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | SYPCR_SWP)
 183 #endif
 184
 185 /*-----------------------------------------------------------------------
 186  * SIUMCR - SIU Module Configuration                            12-30
 187  *-----------------------------------------------------------------------
 188  * PCMCIA config., multi-function pin tri-state
 189  */
 190 #define CFG_SIUMCR      (SIUMCR_DBGC00 | SIUMCR_DBPC00)
 191
 192 /*-----------------------------------------------------------------------
 193  * TBSCR - Time Base Status and Control                         12-16
 194  *-----------------------------------------------------------------------
 195  * Clear Reference Interrupt Status, Timebase freezing enabled
 196  */
 197 #define CFG_TBSCR       (TBSCR_REFA | TBSCR_REFB | TBSCR_TBF)
 198
 199 /*-----------------------------------------------------------------------
 200  * RTCSC - Real-Time Clock Status and Control Register          12-18
 201  *-----------------------------------------------------------------------
 202  */
 203 #define CFG_RTCSC       (RTCSC_SEC | RTCSC_ALR | RTCSC_RTF| RTCSC_RTE)
 204
 205 /*-----------------------------------------------------------------------
 206  * PISCR - Periodic Interrupt Status and Control                12-23
 207  *-----------------------------------------------------------------------
 208  * Clear Periodic Interrupt Status, Interrupt Timer freezing enabled
 209  */
 210 #define CFG_PISCR       (PISCR_PS | PISCR_PITF)
 211
 212 /*-----------------------------------------------------------------------
 213  * PLPRCR - PLL, Low-Power, and Reset Control Register          5-7
 214  *-----------------------------------------------------------------------
 215  * Reset PLL lock status sticky bit, timer expired status bit and timer
 216  * interrupt status bit
 217  */
 218 #define MPC8XX_SPEED    66666666L
 219 #define MPC8XX_XIN      32768   /* 32.768 kHz crystal */
 220 #define MPC8XX_FACT             (MPC8XX_SPEED/MPC8XX_XIN)
 221 #define CFG_PLPRCR_MF  ((MPC8XX_FACT-1) << PLPRCR_MF_SHIFT)
 222 #define CFG_PLPRCR              (CFG_PLPRCR_MF | PLPRCR_TEXPS | PLPRCR_TMIST)
 223
 224 /*-----------------------------------------------------------------------
 225  * SCCR - System Clock and reset Control Register               5-3
 226  *-----------------------------------------------------------------------
 227  * Set clock output, timebase and RTC source and divider,
 228  * power management and some other internal clocks
 229  */
 230 #define SCCR_MASK       SCCR_EBDF11
 231 #define CFG_SCCR        (SCCR_TBS     | \
 232                          SCCR_COM00   | SCCR_DFSYNC00 | SCCR_DFBRG00  | \
 233                          SCCR_DFNL000 | SCCR_DFNH000  | SCCR_DFLCD000 | \
 234                          SCCR_DFALCD00)
 235
 236 /*-----------------------------------------------------------------------
 237  *
 238  *-----------------------------------------------------------------------
 239  *
 240  */
 241 #define CFG_DER         0
 242
 243 /*
 244  * Init Memory Controller:
 245  *
 246  * BR0 and OR0 (FLASH)
 247  */
 248
 249 #define FLASH_BASE0_PRELIM      0x40000000      /* FLASH bank #0    */
 250
 251 /* used to re-map FLASH both when starting from SRAM or FLASH:
 252  * restrict access enough to keep SRAM working (if any)
 253  * but not too much to meddle with FLASH accesses
 254  */
 255 #define CFG_REMAP_OR_AM         0x80000000      /* OR addr mask */
 256 #define CFG_PRELIM_OR_AM        0xE0000000      /* OR addr mask */
 257
 258 /* FLASH timing: ACS = 00, TRLX = 0, CSNT = 1, SCY = 8, EHTR = 0        */
 259 #define CFG_OR_TIMING_FLASH     (OR_CSNT_SAM  | OR_ACS_DIV1 | OR_BI | \
 260                                  OR_SCY_8_CLK )
 261
 262 #define CFG_OR0_REMAP   (CFG_REMAP_OR_AM  | CFG_OR_TIMING_FLASH)
 263 #define CFG_OR0_PRELIM  (CFG_PRELIM_OR_AM | CFG_OR_TIMING_FLASH)
 264 #define CFG_BR0_PRELIM  ((FLASH_BASE0_PRELIM & BR_BA_MSK) | BR_PS_16 | BR_V )
 265
 266 /*
 267  * BR1/2 and OR1/2 (SDRAM)
 268  */
 269 #define SDRAM_BASE1_PRELIM      0x00000000      /* SDRAM bank #0    */
 270 #define SDRAM_BASE2_PRELIM      0x20000000      /* SDRAM bank #1    */
 271 #define SDRAM_MAX_SIZE          0x04000000      /* max 64 MB per bank   */
 272
 273 /* SDRAM timing: Multiplexed addresses, drive GPL5 high on first cycle */
 274 #define CFG_OR_TIMING_SDRAM     (OR_G5LS | OR_CSNT_SAM)
 275
 276 #define CFG_OR1_PRELIM  (CFG_PRELIM_OR_AM | CFG_OR_TIMING_SDRAM )
 277 #define CFG_BR1_PRELIM  ((SDRAM_BASE1_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )
 278 #define CFG_OR2_PRELIM  CFG_OR1_PRELIM
 279 #define CFG_BR2_PRELIM  ((SDRAM_BASE2_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )
 280
 281 /* IO and memory mapped stuff */
 282 #define NX823_IO_OR_AM          0xFFFF0000      /* mask for IO addresses */
 283 #define NX823_IO_BASE           0xFF000000      /* start of IO  */
 284 #define GPOUT_OFFSET            (3<<16)
 285 #define QUART_OFFSET            (4<<16)
 286 #define VIDAC_OFFSET            (5<<16)
 287 #define CPLD_OFFSET             (6<<16)
 288 #define SED1386_OFFSET          (7<<16)
 289
 290 /*
 291  * BR3 and OR3 (general purpose output latches)
 292  */
 293 #define GPOUT_BASE      (NX823_IO_BASE + GPOUT_OFFSET)
 294 #define GPOUT_TIMING    (OR_CSNT_SAM | OR_TRLX | OR_BI)
 295 #define CFG_OR3_PRELIM  (NX823_IO_OR_AM | GPOUT_TIMING)
 296 #define CFG_BR3_PRELIM  (GPOUT_BASE | BR_V)
 297
 298 /*
 299  * BR4 and OR4 (QUART)
 300  */
 301 #define QUART_BASE      (NX823_IO_BASE + QUART_OFFSET)
 302 #define QUART_TIMING    (OR_ACS_DIV4 | OR_SCY_3_CLK | OR_CSNT_SAM | OR_TRLX)
 303 #define CFG_OR4_PRELIM  (NX823_IO_OR_AM | QUART_TIMING | OR_BI)
 304 #define CFG_BR4_PRELIM  (QUART_BASE | BR_PS_8 | BR_V)
 305
 306 /*
 307  * BR5 and OR5 (Video DAC)
 308  */
 309 #define VIDAC_BASE      (NX823_IO_BASE + VIDAC_OFFSET)
 310 #define VIDAC_TIMING    (OR_ACS_DIV4 | OR_SCY_3_CLK | OR_CSNT_SAM | OR_EHTR)
 311 #define CFG_OR5_PRELIM  (NX823_IO_OR_AM | VIDAC_TIMING | OR_BI)
 312 #define CFG_BR5_PRELIM  (VIDAC_BASE | BR_PS_8 | BR_V)
 313
 314 /*
 315  * BR6 and OR6 (CPLD)
 316  * FIXME timing not verified for CPLD
 317  */
 318 #define CPLD_BASE       (NX823_IO_BASE + CPLD_OFFSET)
 319 #define CPLD_TIMING     (OR_ACS_DIV4 | OR_SCY_3_CLK | OR_CSNT_SAM | OR_EHTR)
 320 #define CFG_OR6_PRELIM  (NX823_IO_OR_AM | CPLD_TIMING | OR_BI)
 321 #define CFG_BR6_PRELIM  (CPLD_BASE | BR_PS_8 | BR_V )
 322
 323 /*
 324  * BR7 and OR7 (SED1386)
 325  * FIXME timing not verified for SED controller
 326  */
 327 #define SED1386_BASE    0xF7000000
 328 #define CFG_OR7_PRELIM  (0xFF000000 | OR_BI | OR_SETA)
 329 #define CFG_BR7_PRELIM  (SED1386_BASE | BR_PS_16 | BR_V )
 330
 331 /*
 332  * Memory Periodic Timer Prescaler
 333  */
 334
 335 /* periodic timer for refresh */
 336 #define CFG_MAMR_PTA    97              /* start with divider for 100 MHz   */
 337
 338 /* refresh rate 15.6 us (= 64 ms / 4K = 62.4 / quad bursts) for <= 128 MBit     */
 339 #define CFG_MPTPR_2BK_4K        MPTPR_PTP_DIV16 /* setting for 2 banks  */
 340 #define CFG_MPTPR_1BK_4K        MPTPR_PTP_DIV32 /* setting for 1 bank   */
 341
 342 /* refresh rate 7.8 us (= 64 ms / 8K = 31.2 / quad bursts) for 256 MBit         */
 343 #define CFG_MPTPR_2BK_8K        MPTPR_PTP_DIV8  /* setting for 2 banks  */
 344 #define CFG_MPTPR_1BK_8K        MPTPR_PTP_DIV16 /* setting for 1 bank   */
 345
 346 /*
 347  * MAMR settings for SDRAM
 348  */
 349
 350 /* 8 column SDRAM */
 351 #define CFG_MAMR_8COL   ((CFG_MAMR_PTA << MAMR_PTA_SHIFT)  | MAMR_PTAE      |   \
 352                          MAMR_AMA_TYPE_0 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A11 |   \
 353                          MAMR_RLFA_1X    | MAMR_WLFA_1X    | MAMR_TLFA_4X)
 354 /* 9 column SDRAM */
 355 #define CFG_MAMR_9COL   ((CFG_MAMR_PTA << MAMR_PTA_SHIFT)  | MAMR_PTAE      |   \
 356                          MAMR_AMA_TYPE_1 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A10 |   \
 357                          MAMR_RLFA_1X    | MAMR_WLFA_1X    | MAMR_TLFA_4X)
 358
 359
 360 /*
 361  * Internal Definitions
 362  *
 363  * Boot Flags
 364  */
 365 #define BOOTFLAG_COLD   0x01    /* Normal Power-On: Boot from FLASH */
 366 #define BOOTFLAG_WARM   0x02    /* Software reboot          */
 367
 368 #define CONFIG_ENV_OVERWRITE    /* allow changes to ethaddr (for now)   */
 369 #define CONFIG_ETHADDR          00:10:20:30:40:50
 370 #define CONFIG_IPADDR           10.77.77.20
 371 #define CONFIG_SERVERIP         10.77.77.250
 372
 373 #endif /* __CONFIG_H */