2 * (C) Copyright 2000, 2001, 2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
25 * board/config.h - configuration options, board specific
32 * High Level Configuration Options
36 #define CONFIG_MPC823 1 /* This is a MPC823 CPU */
37 #define CONFIG_RRVISION 1 /* ...on a RRvision board */
39 #define CONFIG_8xx_GCLK_FREQ 64000000
41 #define CONFIG_8xx_CONS_SMC1 1 /* Console is on SMC1 */
42 #undef CONFIG_8xx_CONS_SMC2
43 #undef CONFIG_8xx_CONS_NONE
44 #define CONFIG_BAUDRATE 115200 /* console baudrate = 115kbps */
46 #define CONFIG_BOOTDELAY -1 /* autoboot disabled */
48 #define CONFIG_BOOTDELAY 3 /* autoboot after 5 seconds */
51 #define CONFIG_CLOCKS_IN_MHZ 1 /* clocks passsed to Linux in MHz */
53 #define CONFIG_PREBOOT "setenv stdout serial"
55 #undef CONFIG_BOOTARGS
56 #define CONFIG_ETHADDR 00:50:C2:00:E0:70
57 #define CONFIG_OVERWRITE_ETHADDR_ONCE 1
58 #define CONFIG_IPADDR 10.0.0.5
59 #define CONFIG_SERVERIP 10.0.0.2
60 #define CONFIG_NETMASK 255.0.0.0
61 #define CONFIG_ROOTPATH /opt/eldk/ppc_8xx
62 #define CONFIG_BOOTCOMMAND "run flash_self"
64 #define CONFIG_EXTRA_ENV_SETTINGS \
66 "ramargs=setenv bootargs root=/dev/ram rw\0" \
67 "nfsargs=setenv bootargs root=/dev/nfs rw " \
68 "nfsroot=$(serverip):$(rootpath)\0" \
69 "addip=setenv bootargs $(bootargs) ip=$(ipaddr):$(serverip)" \
70 ":$(gatewayip):$(netmask):$(hostname):$(netdev):off\0" \
71 "addtty=setenv bootargs $(bootargs) console=ttyS0,$(baudrate)\0"\
72 "load=tftp 100000 /tftpboot/u-boot.bin\0" \
73 "update=protect off 1:0-8;era 1:0-8;" \
74 "cp.b 100000 40000000 $(filesize);" \
75 "setenv filesize;saveenv\0" \
76 "kernel_addr=40040000\0" \
77 "ramdisk_addr=40100000\0" \
78 "kernel_img=/tftpboot/uImage\0" \
79 "kernel_load=tftp 200000 $(kernel_img)\0" \
80 "net_nfs=run kernel_load nfsargs addip addtty;bootm\0" \
81 "flash_nfs=run nfsargs addip addtty;bootm $(kernel_addr)\0" \
82 "flash_self=run ramargs addip addtty;" \
83 "bootm $(kernel_addr) $(ramdisk_addr)\0"
86 #define CONFIG_LOADS_ECHO 1 /* echo on for serial download */
87 #undef CFG_LOADS_BAUD_CHANGE /* don't allow baudrate change */
89 #undef CONFIG_WATCHDOG /* watchdog disabled */
91 #undef CONFIG_STATUS_LED /* disturbs display */
93 #undef CONFIG_CAN_DRIVER /* CAN Driver support disabled */
95 #define CONFIG_BOOTP_MASK (CONFIG_BOOTP_DEFAULT | CONFIG_BOOTP_BOOTFILESIZE)
97 #define CONFIG_MAC_PARTITION
98 #define CONFIG_DOS_PARTITION
100 #define CONFIG_RTC_MPC8xx /* use internal RTC of MPC8xx */
104 #define CONFIG_VIDEO 1 /* To enable the video initialization */
107 #define CONFIG_VIDEO_LOGO 1 /* Show the logo */
108 #define CONFIG_VIDEO_ENCODER_AD7176 1 /* Enable this encoder */
109 #define CONFIG_VIDEO_ENCODER_AD7176_ADDR 0x2A /* ALSB to ground */
112 /* enable I2C and select the hardware/software driver */
113 #undef CONFIG_HARD_I2C /* I2C with hardware support */
114 #define CONFIG_SOFT_I2C /* I2C bit-banged */
116 # define CFG_I2C_SPEED 50000 /* 50 kHz is supposed to work */
117 # define CFG_I2C_SLAVE 0xFE
119 #ifdef CONFIG_SOFT_I2C
121 * Software (bit-bang) I2C driver configuration
123 #define PB_SCL 0x00000020 /* PB 26 */
124 #define PB_SDA 0x00000010 /* PB 27 */
126 #define I2C_INIT (immr->im_cpm.cp_pbdir |= PB_SCL)
127 #define I2C_ACTIVE (immr->im_cpm.cp_pbdir |= PB_SDA)
128 #define I2C_TRISTATE (immr->im_cpm.cp_pbdir &= ~PB_SDA)
129 #define I2C_READ ((immr->im_cpm.cp_pbdat & PB_SDA) != 0)
130 #define I2C_SDA(bit) if(bit) immr->im_cpm.cp_pbdat |= PB_SDA; \
131 else immr->im_cpm.cp_pbdat &= ~PB_SDA
132 #define I2C_SCL(bit) if(bit) immr->im_cpm.cp_pbdat |= PB_SCL; \
133 else immr->im_cpm.cp_pbdat &= ~PB_SCL
134 #define I2C_DELAY udelay(1) /* 1/4 I2C clock duration */
135 #endif /* CONFIG_SOFT_I2C */
139 #define CONFIG_COMMANDS ( ( CONFIG_CMD_DFL | \
144 ~( CFG_CMD_PCMCIA | \
147 /* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */
148 #include <cmd_confdefs.h>
151 * Miscellaneous configurable options
153 #define CFG_LONGHELP /* undef to save memory */
154 #define CFG_PROMPT "=> " /* Monitor Command Prompt */
155 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
156 #define CFG_CBSIZE 1024 /* Console I/O Buffer Size */
158 #define CFG_CBSIZE 256 /* Console I/O Buffer Size */
160 #define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer Size */
161 #define CFG_MAXARGS 16 /* max number of command args */
162 #define CFG_BARGSIZE CFG_CBSIZE /* Boot Argument Buffer Size */
164 #define CFG_MEMTEST_START 0x0400000 /* memtest works on */
165 #define CFG_MEMTEST_END 0x0C00000 /* 4 ... 12 MB in DRAM */
167 #define CFG_LOAD_ADDR 0x100000 /* default load address */
169 #define CFG_HZ 1000 /* decrementer freq: 1 ms ticks */
171 #define CFG_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }
174 * Low Level Configuration Settings
175 * (address mappings, register initial values, etc.)
176 * You should know what you are doing if you make changes here.
178 /*-----------------------------------------------------------------------
179 * Internal Memory Mapped Register
181 #define CFG_IMMR 0xFFF00000
183 /*-----------------------------------------------------------------------
184 * Definitions for initial stack pointer and data area (in DPRAM)
186 #define CFG_INIT_RAM_ADDR CFG_IMMR
187 #define CFG_INIT_RAM_END 0x2F00 /* End of used area in DPRAM */
188 #define CFG_GBL_DATA_SIZE 64 /* size in bytes reserved for initial data */
189 #define CFG_GBL_DATA_OFFSET (CFG_INIT_RAM_END - CFG_GBL_DATA_SIZE)
190 #define CFG_INIT_SP_OFFSET CFG_GBL_DATA_OFFSET
192 /*-----------------------------------------------------------------------
193 * Start addresses for the final memory configuration
194 * (Set up by the startup code)
195 * Please note that CFG_SDRAM_BASE _must_ start at 0
197 #define CFG_SDRAM_BASE 0x00000000
198 #define CFG_FLASH_BASE 0x40000000
199 #define CFG_MONITOR_LEN (256 << 10) /* Reserve 256 kB for Monitor */
200 #define CFG_MONITOR_BASE CFG_FLASH_BASE
201 #define CFG_MALLOC_LEN (128 << 10) /* Reserve 128 kB for malloc() */
204 * For booting Linux, the board info and command line data
205 * have to be in the first 8 MB of memory, since this is
206 * the maximum mapped by the Linux kernel during initialization.
208 #define CFG_BOOTMAPSZ (8 << 20) /* Initial Memory map for Linux */
210 /*-----------------------------------------------------------------------
213 #define CFG_MAX_FLASH_BANKS 1 /* max number of memory banks */
214 #define CFG_MAX_FLASH_SECT 71 /* max number of sectors on one chip */
216 /* timeout values are in ticks = ms */
217 #define CFG_FLASH_ERASE_TOUT (120*CFG_HZ) /* Timeout for Flash Erase */
218 #define CFG_FLASH_WRITE_TOUT (1 * CFG_HZ) /* Timeout for Flash Write */
220 #define CFG_ENV_IS_IN_FLASH 1
221 #define CFG_ENV_OFFSET 0x8000 /* Offset of Environment Sector */
222 #define CFG_ENV_SIZE 0x4000 /* Total Size of Environment Sector */
224 /* Address and size of Redundant Environment Sector */
225 #define CFG_ENV_OFFSET_REDUND (CFG_ENV_OFFSET+CFG_ENV_SIZE)
226 #define CFG_ENV_SIZE_REDUND (CFG_ENV_SIZE)
228 /*-----------------------------------------------------------------------
229 * Cache Configuration
231 #define CFG_CACHELINE_SIZE 16 /* For all MPC8xx CPUs */
232 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
233 #define CFG_CACHELINE_SHIFT 4 /* log base 2 of the above value */
236 /*-----------------------------------------------------------------------
237 * SYPCR - System Protection Control 11-9
238 * SYPCR can only be written once after reset!
239 *-----------------------------------------------------------------------
240 * Software & Bus Monitor Timer max, Bus Monitor enable, SW Watchdog freeze
242 #if defined(CONFIG_WATCHDOG)
243 #define CFG_SYPCR (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | \
244 SYPCR_SWE | SYPCR_SWRI| SYPCR_SWP)
246 #define CFG_SYPCR (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | SYPCR_SWP)
249 /*-----------------------------------------------------------------------
250 * SIUMCR - SIU Module Configuration 11-6
251 *-----------------------------------------------------------------------
252 * PCMCIA config., multi-function pin tri-state
254 #ifndef CONFIG_CAN_DRIVER
255 #define CFG_SIUMCR (SIUMCR_DBGC00 | SIUMCR_DBPC00 | SIUMCR_MLRC01)
256 #else /* we must activate GPL5 in the SIUMCR for CAN */
257 #define CFG_SIUMCR (SIUMCR_DBGC11 | SIUMCR_DBPC00 | SIUMCR_MLRC01)
258 #endif /* CONFIG_CAN_DRIVER */
260 /*-----------------------------------------------------------------------
261 * TBSCR - Time Base Status and Control 11-26
262 *-----------------------------------------------------------------------
263 * Clear Reference Interrupt Status, Timebase freezing enabled
265 #define CFG_TBSCR (TBSCR_REFA | TBSCR_REFB | TBSCR_TBF)
267 /*-----------------------------------------------------------------------
268 * RTCSC - Real-Time Clock Status and Control Register 11-27
269 *-----------------------------------------------------------------------
271 #define CFG_RTCSC (RTCSC_SEC | RTCSC_ALR | RTCSC_RTF| RTCSC_RTE)
273 /*-----------------------------------------------------------------------
274 * PISCR - Periodic Interrupt Status and Control 11-31
275 *-----------------------------------------------------------------------
276 * Clear Periodic Interrupt Status, Interrupt Timer freezing enabled
278 #define CFG_PISCR (PISCR_PS | PISCR_PITF | PISCR_PTE)
280 /*-----------------------------------------------------------------------
281 * PLPRCR - PLL, Low-Power, and Reset Control Register 15-30
282 *-----------------------------------------------------------------------
283 * Reset PLL lock status sticky bit, timer expired status bit and timer
284 * interrupt status bit
287 /* for 64 MHz, we use a 16 MHz clock * 4 */
288 #define CFG_PLPRCR ( (4-1)<<PLPRCR_MF_SHIFT | PLPRCR_TEXPS | PLPRCR_TMIST )
290 /*-----------------------------------------------------------------------
291 * SCCR - System Clock and reset Control Register 15-27
292 *-----------------------------------------------------------------------
293 * Set clock output, timebase and RTC source and divider,
294 * power management and some other internal clocks
296 #define SCCR_MASK SCCR_EBDF11
297 #define CFG_SCCR (/* SCCR_TBS | */ SCCR_RTSEL | SCCR_RTDIV | \
298 SCCR_COM00 | SCCR_DFSYNC00 | SCCR_DFBRG00 | \
299 SCCR_DFNL000 | SCCR_DFNH000 | SCCR_DFLCD000 | \
302 /*-----------------------------------------------------------------------
304 *-----------------------------------------------------------------------
307 #define CFG_PCMCIA_MEM_ADDR (0xE0000000)
308 #define CFG_PCMCIA_MEM_SIZE ( 64 << 20 )
309 #define CFG_PCMCIA_DMA_ADDR (0xE4000000)
310 #define CFG_PCMCIA_DMA_SIZE ( 64 << 20 )
311 #define CFG_PCMCIA_ATTRB_ADDR (0xE8000000)
312 #define CFG_PCMCIA_ATTRB_SIZE ( 64 << 20 )
313 #define CFG_PCMCIA_IO_ADDR (0xEC000000)
314 #define CFG_PCMCIA_IO_SIZE ( 64 << 20 )
316 /*-----------------------------------------------------------------------
317 * IDE/ATA stuff (Supports IDE harddisk on PCMCIA Adapter)
318 *-----------------------------------------------------------------------
321 #define CONFIG_IDE_8xx_PCCARD 1 /* Use IDE with PC Card Adapter */
323 #undef CONFIG_IDE_8xx_DIRECT /* Direct IDE not supported */
324 #undef CONFIG_IDE_LED /* LED for ide not supported */
325 #undef CONFIG_IDE_RESET /* reset for ide not supported */
327 #define CFG_IDE_MAXBUS 1 /* max. 1 IDE bus */
328 #define CFG_IDE_MAXDEVICE 1 /* max. 1 drive per IDE bus */
330 #define CFG_ATA_IDE0_OFFSET 0x0000
332 #define CFG_ATA_BASE_ADDR CFG_PCMCIA_MEM_ADDR
334 /* Offset for data I/O */
335 #define CFG_ATA_DATA_OFFSET (CFG_PCMCIA_MEM_SIZE + 0x320)
337 /* Offset for normal register accesses */
338 #define CFG_ATA_REG_OFFSET (2 * CFG_PCMCIA_MEM_SIZE + 0x320)
340 /* Offset for alternate registers */
341 #define CFG_ATA_ALT_OFFSET 0x0100
343 /*-----------------------------------------------------------------------
345 *-----------------------------------------------------------------------
348 /*#define CFG_DER 0x2002000F*/
352 * Init Memory Controller:
357 #define FLASH_BASE0_PRELIM 0x40000000 /* FLASH bank #0 */
359 /* used to re-map FLASH both when starting from SRAM or FLASH:
360 * restrict access enough to keep SRAM working (if any)
361 * but not too much to meddle with FLASH accesses
363 #define CFG_REMAP_OR_AM 0x80000000 /* OR addr mask */
364 #define CFG_PRELIM_OR_AM 0xE0000000 /* OR addr mask */
369 /* 66 MHz CPU - 66 MHz bus: ACS = 00, TRLX = 1, CSNT = 1, SCY = 3, EHTR = 1 */
370 #define CFG_OR_TIMING_FLASH (OR_ACS_DIV1 | OR_TRLX | OR_CSNT_SAM | \
371 OR_SCY_3_CLK | OR_EHTR | OR_BI)
373 #define CFG_OR0_REMAP (CFG_REMAP_OR_AM | CFG_OR_TIMING_FLASH)
374 #define CFG_OR0_PRELIM (CFG_PRELIM_OR_AM | CFG_OR_TIMING_FLASH)
375 #define CFG_BR0_PRELIM ((FLASH_BASE0_PRELIM & BR_BA_MSK) | BR_V )
378 * BR2/3 and OR2/3 (SDRAM)
381 #define SDRAM_BASE2_PRELIM 0x00000000 /* SDRAM bank #0 */
382 #define SDRAM_BASE3_PRELIM 0x20000000 /* SDRAM bank #1 */
383 #define SDRAM_MAX_SIZE 0x04000000 /* max 64 MB per bank */
385 /* SDRAM timing: Multiplexed addresses, GPL5 output to GPL5_A (don't care) */
386 #define CFG_OR_TIMING_SDRAM 0x00000A00
388 #define CFG_OR2_PRELIM (CFG_PRELIM_OR_AM | CFG_OR_TIMING_SDRAM )
389 #define CFG_BR2_PRELIM ((SDRAM_BASE2_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )
391 #ifndef CONFIG_CAN_DRIVER
392 #define CFG_OR3_PRELIM CFG_OR2_PRELIM
393 #define CFG_BR3_PRELIM ((SDRAM_BASE3_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )
394 #else /* CAN uses CS3#, so we can have only one SDRAM bank anyway */
395 #define CFG_CAN_BASE 0xC0000000 /* CAN mapped at 0xC0000000 */
396 #define CFG_CAN_OR_AM 0xFFFF8000 /* 32 kB address mask */
397 #define CFG_OR3_CAN (CFG_CAN_OR_AM | OR_G5LA | OR_BI)
398 #define CFG_BR3_CAN ((CFG_CAN_BASE & BR_BA_MSK) | \
399 BR_PS_8 | BR_MS_UPMB | BR_V )
400 #endif /* CONFIG_CAN_DRIVER */
403 * Memory Periodic Timer Prescaler
405 * The Divider for PTA (refresh timer) configuration is based on an
406 * example SDRAM configuration (64 MBit, one bank). The adjustment to
407 * the number of chip selects (NCS) and the actually needed refresh
408 * rate is done by setting MPTPR.
410 * PTA is calculated from
411 * PTA = (gclk * Trefresh) / ((2 ^ (2 * DFBRG)) * PTP * NCS)
413 * gclk CPU clock (not bus clock!)
414 * Trefresh Refresh cycle * 4 (four word bursts used)
416 * 4096 Rows from SDRAM example configuration
417 * 1000 factor s -> ms
418 * 32 PTP (pre-divider from MPTPR) from SDRAM example configuration
419 * 4 Number of refresh cycles per period
420 * 64 Refresh cycle in ms per number of rows
421 * --------------------------------------------
422 * Divider = 4096 * 32 * 1000 / (4 * 64) = 512000
424 * 50 MHz => 50.000.000 / Divider = 98
425 * 66 Mhz => 66.000.000 / Divider = 129
426 * 80 Mhz => 80.000.000 / Divider = 156
428 #define CFG_MAMR_PTA 129
431 * For 16 MBit, refresh rates could be 31.3 us
432 * (= 64 ms / 2K = 125 / quad bursts).
433 * For a simpler initialization, 15.6 us is used instead.
435 * #define CFG_MPTPR_2BK_2K MPTPR_PTP_DIV32 for 2 banks
436 * #define CFG_MPTPR_1BK_2K MPTPR_PTP_DIV64 for 1 bank
438 #define CFG_MPTPR_2BK_4K MPTPR_PTP_DIV16 /* setting for 2 banks */
439 #define CFG_MPTPR_1BK_4K MPTPR_PTP_DIV32 /* setting for 1 bank */
441 /* refresh rate 7.8 us (= 64 ms / 8K = 31.2 / quad bursts) for 256 MBit */
442 #define CFG_MPTPR_2BK_8K MPTPR_PTP_DIV8 /* setting for 2 banks */
443 #define CFG_MPTPR_1BK_8K MPTPR_PTP_DIV16 /* setting for 1 bank */
446 * MAMR settings for SDRAM
450 #define CFG_MAMR_8COL ((CFG_MAMR_PTA << MAMR_PTA_SHIFT) | MAMR_PTAE | \
451 MAMR_AMA_TYPE_0 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A11 | \
452 MAMR_RLFA_1X | MAMR_WLFA_1X | MAMR_TLFA_4X)
454 #define CFG_MAMR_9COL ((CFG_MAMR_PTA << MAMR_PTA_SHIFT) | MAMR_PTAE | \
455 MAMR_AMA_TYPE_1 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A10 | \
456 MAMR_RLFA_1X | MAMR_WLFA_1X | MAMR_TLFA_4X)
460 * Internal Definitions
464 #define BOOTFLAG_COLD 0x01 /* Normal Power-On: Boot from FLASH */
465 #define BOOTFLAG_WARM 0x02 /* Software reboot */
467 #endif /* __CONFIG_H */