3 * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
6 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
8 * See file CREDITS for list of people who contributed to this
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.
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.
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,
28 * board/config.h - configuration options, board specific
35 * High Level Configuration Options
39 #define CONFIG_MPC823 1 /* This is a MPC823 CPU */
40 #define CONFIG_NX823 1 /* ...on a NEXUS 823 module */
42 #define CONFIG_SYS_TEXT_BASE 0x40000000
44 /*#define CONFIG_VIDEO 1 */
46 #define CONFIG_8xx_GCLK_FREQ MPC8XX_SPEED
47 #define CONFIG_8xx_CONS_SMC1 1 /* Console is on SMC1 */
48 #undef CONFIG_8xx_CONS_SMC2
49 #undef CONFIG_8xx_CONS_NONE
50 #define CONFIG_BAUDRATE 57600 /* console baudrate = 115kbps */
51 #define CONFIG_BOOTDELAY 2 /* autoboot after 2 seconds */
52 #define CONFIG_BOOTARGS "ramdisk_size=8000 "\
53 "root=/dev/nfs rw nfsroot=10.77.77.250:/ppcroot "\
54 "nfsaddrs=10.77.77.20:10.77.77.250"
55 #define CONFIG_BOOTCOMMAND "bootm 400e0000"
57 #define CONFIG_LOADS_ECHO 1 /* echo on for serial download */
58 #undef CONFIG_SYS_LOADS_BAUD_CHANGE /* don't allow baudrate change */
59 #undef CONFIG_WATCHDOG /* watchdog disabled, for now */
65 #define CONFIG_BOOTP_SUBNETMASK
66 #define CONFIG_BOOTP_GATEWAY
67 #define CONFIG_BOOTP_HOSTNAME
68 #define CONFIG_BOOTP_BOOTPATH
69 #define CONFIG_BOOTP_BOOTFILESIZE
73 * Command line configuration.
75 #include <config_cmd_default.h>
77 #define CONFIG_CMD_SOURCE
80 /* call various generic functions */
81 #define CONFIG_MISC_INIT_R
84 * Miscellaneous configurable options
86 #define CONFIG_SYS_LONGHELP /* undef to save memory */
87 #define CONFIG_SYS_PROMPT "=> " /* Monitor Command Prompt */
88 #if defined(CONFIG_CMD_KGDB)
89 #define CONFIG_SYS_CBSIZE 1024 /* Console I/O Buffer Size */
91 #define CONFIG_SYS_CBSIZE 256 /* Console I/O Buffer Size */
93 #define CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE+sizeof(CONFIG_SYS_PROMPT)+16) /* Print Buffer Size */
94 #define CONFIG_SYS_MAXARGS 16 /* max number of command args */
95 #define CONFIG_SYS_BARGSIZE CONFIG_SYS_CBSIZE /* Boot Argument Buffer Size */
97 #define CONFIG_SYS_MEMTEST_START 0x0400000 /* memtest works on */
98 #define CONFIG_SYS_MEMTEST_END 0x0C00000 /* 4 ... 12 MB in DRAM */
100 #define CONFIG_SYS_LOAD_ADDR 0x100000 /* default load address */
102 #define CONFIG_SYS_HZ 1000 /* decrementer freq: 1 ms ticks */
104 #define CONFIG_SYS_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }
107 * Low Level Configuration Settings
108 * (address mappings, register initial values, etc.)
109 * You should know what you are doing if you make changes here.
111 /*-----------------------------------------------------------------------
112 * Internal Memory Mapped Register
114 #define CONFIG_SYS_IMMR 0xFFF00000
116 /*-----------------------------------------------------------------------
117 * Definitions for initial stack pointer and data area (in DPRAM)
119 #define CONFIG_SYS_INIT_RAM_ADDR CONFIG_SYS_IMMR
120 #define CONFIG_SYS_INIT_RAM_SIZE 0x2F00 /* Size of used area in DPRAM */
121 #define CONFIG_SYS_GBL_DATA_OFFSET (CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
122 #define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_GBL_DATA_OFFSET
124 /*-----------------------------------------------------------------------
125 * Start addresses for the final memory configuration
126 * (Set up by the startup code)
127 * Please note that CONFIG_SYS_SDRAM_BASE _must_ start at 0
129 #define CONFIG_SYS_SDRAM_BASE 0x00000000
130 #define CONFIG_SYS_FLASH_BASE 0x40000000
131 #define CONFIG_SYS_MONITOR_LEN (128 << 10) /* Reserve 128 kB for Monitor */
132 #define CONFIG_SYS_MONITOR_BASE CONFIG_SYS_FLASH_BASE
133 #define CONFIG_SYS_MALLOC_LEN (128 << 10) /* Reserve 128 kB for malloc() */
136 * For booting Linux, the board info and command line data
137 * have to be in the first 8 MB of memory, since this is
138 * the maximum mapped by the Linux kernel during initialization.
140 #define CONFIG_SYS_BOOTMAPSZ (8 << 20) /* Initial Memory map for Linux */
142 /*-----------------------------------------------------------------------
145 #define CONFIG_SYS_MAX_FLASH_BANKS 1 /* max number of memory banks */
146 #define CONFIG_SYS_MAX_FLASH_SECT 128 /* max number of sectors on one chip */
148 #define CONFIG_SYS_FLASH_ERASE_TOUT 120000 /* Timeout for Flash Erase (in ms) */
149 #define CONFIG_SYS_FLASH_WRITE_TOUT 500 /* Timeout for Flash Write (in ms) */
151 #define CONFIG_ENV_IS_IN_FLASH 1
154 #define CONFIG_ENV_SIZE 0x200 /* FIXME How big when embedded?? */
155 #define CONFIG_ENV_ADDR CONFIG_SYS_MONITOR_BASE
157 #define CONFIG_ENV_ADDR 0x40020000 /* absolute address for now */
158 #define CONFIG_ENV_SIZE 0x20000 /* 8K ouch, this may later be */
161 #define CONFIG_SYS_FLASH_SN_BASE 0x4001fff0 /* programmer automagically puts */
162 #define CONFIG_SYS_FLASH_SN_SECTOR 0x40000000 /* a serial number here */
163 #define CONFIG_SYS_FLASH_SN_BYTES 8
165 /*-----------------------------------------------------------------------
166 * Cache Configuration
168 #define CONFIG_SYS_CACHELINE_SIZE 16 /* For all MPC8xx CPUs */
169 #if defined(CONFIG_CMD_KGDB)
170 #define CONFIG_SYS_CACHELINE_SHIFT 4 /* log base 2 of the above value */
173 /*-----------------------------------------------------------------------
174 * SYPCR - System Protection Control 11-9
175 * SYPCR can only be written once after reset!
176 *-----------------------------------------------------------------------
177 * Software & Bus Monitor Timer max, Bus Monitor enable, SW Watchdog freeze
179 #if defined(CONFIG_WATCHDOG)
180 #define CONFIG_SYS_SYPCR (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | \
181 SYPCR_SWE | SYPCR_SWP)
183 #define CONFIG_SYS_SYPCR (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | SYPCR_SWP)
186 /*-----------------------------------------------------------------------
187 * SIUMCR - SIU Module Configuration 12-30
188 *-----------------------------------------------------------------------
189 * PCMCIA config., multi-function pin tri-state
191 #define CONFIG_SYS_SIUMCR (SIUMCR_DBGC00 | SIUMCR_DBPC00)
193 /*-----------------------------------------------------------------------
194 * TBSCR - Time Base Status and Control 12-16
195 *-----------------------------------------------------------------------
196 * Clear Reference Interrupt Status, Timebase freezing enabled
198 #define CONFIG_SYS_TBSCR (TBSCR_REFA | TBSCR_REFB | TBSCR_TBF)
200 /*-----------------------------------------------------------------------
201 * RTCSC - Real-Time Clock Status and Control Register 12-18
202 *-----------------------------------------------------------------------
204 #define CONFIG_SYS_RTCSC (RTCSC_SEC | RTCSC_ALR | RTCSC_RTF| RTCSC_RTE)
206 /*-----------------------------------------------------------------------
207 * PISCR - Periodic Interrupt Status and Control 12-23
208 *-----------------------------------------------------------------------
209 * Clear Periodic Interrupt Status, Interrupt Timer freezing enabled
211 #define CONFIG_SYS_PISCR (PISCR_PS | PISCR_PITF)
213 /*-----------------------------------------------------------------------
214 * PLPRCR - PLL, Low-Power, and Reset Control Register 5-7
215 *-----------------------------------------------------------------------
216 * Reset PLL lock status sticky bit, timer expired status bit and timer
217 * interrupt status bit
219 #define MPC8XX_SPEED 66666666L
220 #define MPC8XX_XIN 32768 /* 32.768 kHz crystal */
221 #define MPC8XX_FACT (MPC8XX_SPEED/MPC8XX_XIN)
222 #define CONFIG_SYS_PLPRCR_MF ((MPC8XX_FACT-1) << PLPRCR_MF_SHIFT)
223 #define CONFIG_SYS_PLPRCR (CONFIG_SYS_PLPRCR_MF | PLPRCR_TEXPS | PLPRCR_TMIST)
225 /*-----------------------------------------------------------------------
226 * SCCR - System Clock and reset Control Register 5-3
227 *-----------------------------------------------------------------------
228 * Set clock output, timebase and RTC source and divider,
229 * power management and some other internal clocks
231 #define SCCR_MASK SCCR_EBDF11
232 #define CONFIG_SYS_SCCR (SCCR_TBS | \
233 SCCR_COM00 | SCCR_DFSYNC00 | SCCR_DFBRG00 | \
234 SCCR_DFNL000 | SCCR_DFNH000 | SCCR_DFLCD000 | \
237 /*-----------------------------------------------------------------------
239 *-----------------------------------------------------------------------
242 #define CONFIG_SYS_DER 0
245 * Init Memory Controller:
247 * BR0 and OR0 (FLASH)
250 #define FLASH_BASE0_PRELIM 0x40000000 /* FLASH bank #0 */
252 /* used to re-map FLASH both when starting from SRAM or FLASH:
253 * restrict access enough to keep SRAM working (if any)
254 * but not too much to meddle with FLASH accesses
256 #define CONFIG_SYS_REMAP_OR_AM 0x80000000 /* OR addr mask */
257 #define CONFIG_SYS_PRELIM_OR_AM 0xE0000000 /* OR addr mask */
259 /* FLASH timing: ACS = 00, TRLX = 0, CSNT = 1, SCY = 8, EHTR = 0 */
260 #define CONFIG_SYS_OR_TIMING_FLASH (OR_CSNT_SAM | OR_ACS_DIV1 | OR_BI | \
263 #define CONFIG_SYS_OR0_REMAP (CONFIG_SYS_REMAP_OR_AM | CONFIG_SYS_OR_TIMING_FLASH)
264 #define CONFIG_SYS_OR0_PRELIM (CONFIG_SYS_PRELIM_OR_AM | CONFIG_SYS_OR_TIMING_FLASH)
265 #define CONFIG_SYS_BR0_PRELIM ((FLASH_BASE0_PRELIM & BR_BA_MSK) | BR_PS_16 | BR_V )
268 * BR1/2 and OR1/2 (SDRAM)
270 #define SDRAM_BASE1_PRELIM 0x00000000 /* SDRAM bank #0 */
271 #define SDRAM_BASE2_PRELIM 0x20000000 /* SDRAM bank #1 */
272 #define SDRAM_MAX_SIZE 0x04000000 /* max 64 MB per bank */
274 /* SDRAM timing: Multiplexed addresses, drive GPL5 high on first cycle */
275 #define CONFIG_SYS_OR_TIMING_SDRAM (OR_G5LS | OR_CSNT_SAM)
277 #define CONFIG_SYS_OR1_PRELIM (CONFIG_SYS_PRELIM_OR_AM | CONFIG_SYS_OR_TIMING_SDRAM )
278 #define CONFIG_SYS_BR1_PRELIM ((SDRAM_BASE1_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )
279 #define CONFIG_SYS_OR2_PRELIM CONFIG_SYS_OR1_PRELIM
280 #define CONFIG_SYS_BR2_PRELIM ((SDRAM_BASE2_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )
282 /* IO and memory mapped stuff */
283 #define NX823_IO_OR_AM 0xFFFF0000 /* mask for IO addresses */
284 #define NX823_IO_BASE 0xFF000000 /* start of IO */
285 #define GPOUT_OFFSET (3<<16)
286 #define QUART_OFFSET (4<<16)
287 #define VIDAC_OFFSET (5<<16)
288 #define CPLD_OFFSET (6<<16)
289 #define SED1386_OFFSET (7<<16)
292 * BR3 and OR3 (general purpose output latches)
294 #define GPOUT_BASE (NX823_IO_BASE + GPOUT_OFFSET)
295 #define GPOUT_TIMING (OR_CSNT_SAM | OR_TRLX | OR_BI)
296 #define CONFIG_SYS_OR3_PRELIM (NX823_IO_OR_AM | GPOUT_TIMING)
297 #define CONFIG_SYS_BR3_PRELIM (GPOUT_BASE | BR_V)
300 * BR4 and OR4 (QUART)
302 #define QUART_BASE (NX823_IO_BASE + QUART_OFFSET)
303 #define QUART_TIMING (OR_ACS_DIV4 | OR_SCY_3_CLK | OR_CSNT_SAM | OR_TRLX)
304 #define CONFIG_SYS_OR4_PRELIM (NX823_IO_OR_AM | QUART_TIMING | OR_BI)
305 #define CONFIG_SYS_BR4_PRELIM (QUART_BASE | BR_PS_8 | BR_V)
308 * BR5 and OR5 (Video DAC)
310 #define VIDAC_BASE (NX823_IO_BASE + VIDAC_OFFSET)
311 #define VIDAC_TIMING (OR_ACS_DIV4 | OR_SCY_3_CLK | OR_CSNT_SAM | OR_EHTR)
312 #define CONFIG_SYS_OR5_PRELIM (NX823_IO_OR_AM | VIDAC_TIMING | OR_BI)
313 #define CONFIG_SYS_BR5_PRELIM (VIDAC_BASE | BR_PS_8 | BR_V)
317 * FIXME timing not verified for CPLD
319 #define CPLD_BASE (NX823_IO_BASE + CPLD_OFFSET)
320 #define CPLD_TIMING (OR_ACS_DIV4 | OR_SCY_3_CLK | OR_CSNT_SAM | OR_EHTR)
321 #define CONFIG_SYS_OR6_PRELIM (NX823_IO_OR_AM | CPLD_TIMING | OR_BI)
322 #define CONFIG_SYS_BR6_PRELIM (CPLD_BASE | BR_PS_8 | BR_V )
325 * BR7 and OR7 (SED1386)
326 * FIXME timing not verified for SED controller
328 #define SED1386_BASE 0xF7000000
329 #define CONFIG_SYS_OR7_PRELIM (0xFF000000 | OR_BI | OR_SETA)
330 #define CONFIG_SYS_BR7_PRELIM (SED1386_BASE | BR_PS_16 | BR_V )
333 * Memory Periodic Timer Prescaler
336 /* periodic timer for refresh */
337 #define CONFIG_SYS_MAMR_PTA 97 /* start with divider for 100 MHz */
339 /* refresh rate 15.6 us (= 64 ms / 4K = 62.4 / quad bursts) for <= 128 MBit */
340 #define CONFIG_SYS_MPTPR_2BK_4K MPTPR_PTP_DIV16 /* setting for 2 banks */
341 #define CONFIG_SYS_MPTPR_1BK_4K MPTPR_PTP_DIV32 /* setting for 1 bank */
343 /* refresh rate 7.8 us (= 64 ms / 8K = 31.2 / quad bursts) for 256 MBit */
344 #define CONFIG_SYS_MPTPR_2BK_8K MPTPR_PTP_DIV8 /* setting for 2 banks */
345 #define CONFIG_SYS_MPTPR_1BK_8K MPTPR_PTP_DIV16 /* setting for 1 bank */
348 * MAMR settings for SDRAM
352 #define CONFIG_SYS_MAMR_8COL ((CONFIG_SYS_MAMR_PTA << MAMR_PTA_SHIFT) | MAMR_PTAE | \
353 MAMR_AMA_TYPE_0 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A11 | \
354 MAMR_RLFA_1X | MAMR_WLFA_1X | MAMR_TLFA_4X)
356 #define CONFIG_SYS_MAMR_9COL ((CONFIG_SYS_MAMR_PTA << MAMR_PTA_SHIFT) | MAMR_PTAE | \
357 MAMR_AMA_TYPE_1 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A10 | \
358 MAMR_RLFA_1X | MAMR_WLFA_1X | MAMR_TLFA_4X)
360 #define CONFIG_ENV_OVERWRITE /* allow changes to ethaddr (for now) */
361 #define CONFIG_ETHADDR 00:10:20:30:40:50
362 #define CONFIG_IPADDR 10.77.77.20
363 #define CONFIG_SERVERIP 10.77.77.250
365 #endif /* __CONFIG_H */