--- /dev/null
+/*
+ * (C) Copyright 2001
+ * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
+ *
+ * (C) Copyright 2001
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * board/config.h - configuration options, board specific
+ */
+
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+/*
+ * High Level Configuration Options
+ * (easy to change)
+ */
+
+#define CONFIG_MPC823 1 /* This is a MPC823 CPU */
+#define CONFIG_NX823 1 /* ...on a NEXUS 823 module */
+
+/*#define CONFIG_VIDEO 1 */
+
+#define CONFIG_8xx_GCLK_FREQ MPC8XX_SPEED
+#define CONFIG_8xx_CONS_SMC1 1 /* Console is on SMC1 */
+#undef CONFIG_8xx_CONS_SMC2
+#undef CONFIG_8xx_CONS_NONE
+#define CONFIG_BAUDRATE 57600 /* console baudrate = 115kbps */
+#define CONFIG_BOOTDELAY 2 /* autoboot after 2 seconds */
+#define CONFIG_BOOTARGS "ramdisk=8000 "\
+ "root=/dev/nfs rw nfsroot=10.77.77.250:/ppcroot "\
+ "nfsaddrs=10.77.77.20:10.77.77.250"
+#define CONFIG_BOOTCOMMAND "bootm 400e0000"
+
+#define CONFIG_LOADS_ECHO 1 /* echo on for serial download */
+#undef CFG_LOADS_BAUD_CHANGE /* don't allow baudrate change */
+#undef CONFIG_WATCHDOG /* watchdog disabled, for now */
+#define CONFIG_BOOTP_MASK (CONFIG_BOOTP_DEFAULT | CONFIG_BOOTP_BOOTFILESIZE)
+#define CONFIG_COMMANDS (CONFIG_CMD_DFL | CFG_CMD_AUTOSCRIPT)
+#define CONFIG_AUTOSCRIPT
+
+/* call various generic functions */
+#define CONFIG_MISC_INIT_R
+
+/* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */
+#include <cmd_confdefs.h>
+
+/*
+ * Miscellaneous configurable options
+ */
+#define CFG_LONGHELP /* undef to save memory */
+#define CFG_PROMPT "=> " /* Monitor Command Prompt */
+#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
+#define CFG_CBSIZE 1024 /* Console I/O Buffer Size */
+#else
+#define CFG_CBSIZE 256 /* Console I/O Buffer Size */
+#endif
+#define CFG_PBSIZE (CFG_CBSIZE+sizeof(CFG_PROMPT)+16) /* Print Buffer Size */
+#define CFG_MAXARGS 16 /* max number of command args */
+#define CFG_BARGSIZE CFG_CBSIZE /* Boot Argument Buffer Size */
+
+#define CFG_MEMTEST_START 0x0400000 /* memtest works on */
+#define CFG_MEMTEST_END 0x0C00000 /* 4 ... 12 MB in DRAM */
+
+#define CFG_LOAD_ADDR 0x100000 /* default load address */
+
+#define CFG_HZ 1000 /* decrementer freq: 1 ms ticks */
+
+#define CFG_BAUDRATE_TABLE { 9600, 19200, 38400, 57600, 115200 }
+
+/*
+ * Low Level Configuration Settings
+ * (address mappings, register initial values, etc.)
+ * You should know what you are doing if you make changes here.
+ */
+/*-----------------------------------------------------------------------
+ * Internal Memory Mapped Register
+ */
+#define CFG_IMMR 0xFFF00000
+
+/*-----------------------------------------------------------------------
+ * Definitions for initial stack pointer and data area (in DPRAM)
+ */
+#define CFG_INIT_RAM_ADDR CFG_IMMR
+#define CFG_INIT_RAM_END 0x2F00 /* End of used area in DPRAM */
+#define CFG_GBL_DATA_SIZE 64 /* size in bytes reserved for initial data */
+#define CFG_GBL_DATA_OFFSET (CFG_INIT_RAM_END - CFG_GBL_DATA_SIZE)
+#define CFG_INIT_SP_OFFSET CFG_GBL_DATA_OFFSET
+
+/*-----------------------------------------------------------------------
+ * Start addresses for the final memory configuration
+ * (Set up by the startup code)
+ * Please note that CFG_SDRAM_BASE _must_ start at 0
+ */
+#define CFG_SDRAM_BASE 0x00000000
+#define CFG_FLASH_BASE 0x40000000
+#define CFG_MONITOR_LEN (128 << 10) /* Reserve 128 kB for Monitor */
+#define CFG_MONITOR_BASE CFG_FLASH_BASE
+#define CFG_MALLOC_LEN (128 << 10) /* Reserve 128 kB for malloc() */
+
+/*
+ * For booting Linux, the board info and command line data
+ * have to be in the first 8 MB of memory, since this is
+ * the maximum mapped by the Linux kernel during initialization.
+ */
+#define CFG_BOOTMAPSZ (8 << 20) /* Initial Memory map for Linux */
+
+/*-----------------------------------------------------------------------
+ * FLASH organization
+ */
+#define CFG_MAX_FLASH_BANKS 1 /* max number of memory banks */
+#define CFG_MAX_FLASH_SECT 128 /* max number of sectors on one chip */
+
+#define CFG_FLASH_ERASE_TOUT 120000 /* Timeout for Flash Erase (in ms) */
+#define CFG_FLASH_WRITE_TOUT 500 /* Timeout for Flash Write (in ms) */
+
+#define CFG_ENV_IS_IN_FLASH 1
+#define xEMBED
+#ifdef EMBED
+#define CFG_ENV_SIZE 0x200 /* FIXME How big when embedded?? */
+#define CFG_ENV_ADDR CFG_MONITOR_BASE
+#else
+#define CFG_ENV_ADDR 0x40020000 /* absolute address for now */
+#define CFG_ENV_SIZE 0x20000 /* 8K ouch, this may later be */
+#endif
+
+#define CFG_FLASH_SN_BASE 0x4001fff0 /* programmer automagically puts */
+#define CFG_FLASH_SN_SECTOR 0x40000000 /* a serial number here */
+#define CFG_FLASH_SN_BYTES 8
+
+/*-----------------------------------------------------------------------
+ * Cache Configuration
+ */
+#define CFG_CACHELINE_SIZE 16 /* For all MPC8xx CPUs */
+#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
+#define CFG_CACHELINE_SHIFT 4 /* log base 2 of the above value */
+#endif
+
+/*-----------------------------------------------------------------------
+ * SYPCR - System Protection Control 11-9
+ * SYPCR can only be written once after reset!
+ *-----------------------------------------------------------------------
+ * Software & Bus Monitor Timer max, Bus Monitor enable, SW Watchdog freeze
+ */
+#if defined(CONFIG_WATCHDOG)
+#define CFG_SYPCR (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | \
+ SYPCR_SWE | SYPCR_SWP)
+#else
+#define CFG_SYPCR (SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | SYPCR_SWP)
+#endif
+
+/*-----------------------------------------------------------------------
+ * SIUMCR - SIU Module Configuration 12-30
+ *-----------------------------------------------------------------------
+ * PCMCIA config., multi-function pin tri-state
+ */
+#define CFG_SIUMCR (SIUMCR_DBGC00 | SIUMCR_DBPC00)
+
+/*-----------------------------------------------------------------------
+ * TBSCR - Time Base Status and Control 12-16
+ *-----------------------------------------------------------------------
+ * Clear Reference Interrupt Status, Timebase freezing enabled
+ */
+#define CFG_TBSCR (TBSCR_REFA | TBSCR_REFB | TBSCR_TBF)
+
+/*-----------------------------------------------------------------------
+ * RTCSC - Real-Time Clock Status and Control Register 12-18
+ *-----------------------------------------------------------------------
+ */
+#define CFG_RTCSC (RTCSC_SEC | RTCSC_ALR | RTCSC_RTF| RTCSC_RTE)
+
+/*-----------------------------------------------------------------------
+ * PISCR - Periodic Interrupt Status and Control 12-23
+ *-----------------------------------------------------------------------
+ * Clear Periodic Interrupt Status, Interrupt Timer freezing enabled
+ */
+#define CFG_PISCR (PISCR_PS | PISCR_PITF)
+
+/*-----------------------------------------------------------------------
+ * PLPRCR - PLL, Low-Power, and Reset Control Register 5-7
+ *-----------------------------------------------------------------------
+ * Reset PLL lock status sticky bit, timer expired status bit and timer
+ * interrupt status bit
+ */
+#define MPC8XX_SPEED 66666666L
+#define MPC8XX_XIN 32768 /* 32.768 kHz crystal */
+#define MPC8XX_FACT (MPC8XX_SPEED/MPC8XX_XIN)
+#define CFG_PLPRCR_MF ((MPC8XX_FACT-1) << PLPRCR_MF_SHIFT)
+#define CFG_PLPRCR (CFG_PLPRCR_MF | PLPRCR_TEXPS | PLPRCR_TMIST)
+
+/*-----------------------------------------------------------------------
+ * SCCR - System Clock and reset Control Register 5-3
+ *-----------------------------------------------------------------------
+ * Set clock output, timebase and RTC source and divider,
+ * power management and some other internal clocks
+ */
+#define SCCR_MASK SCCR_EBDF11
+#define CFG_SCCR (SCCR_TBS | \
+ SCCR_COM00 | SCCR_DFSYNC00 | SCCR_DFBRG00 | \
+ SCCR_DFNL000 | SCCR_DFNH000 | SCCR_DFLCD000 | \
+ SCCR_DFALCD00)
+
+/*-----------------------------------------------------------------------
+ *
+ *-----------------------------------------------------------------------
+ *
+ */
+#define CFG_DER 0
+
+/*
+ * Init Memory Controller:
+ *
+ * BR0 and OR0 (FLASH)
+ */
+
+#define FLASH_BASE0_PRELIM 0x40000000 /* FLASH bank #0 */
+
+/* used to re-map FLASH both when starting from SRAM or FLASH:
+ * restrict access enough to keep SRAM working (if any)
+ * but not too much to meddle with FLASH accesses
+ */
+#define CFG_REMAP_OR_AM 0x80000000 /* OR addr mask */
+#define CFG_PRELIM_OR_AM 0xE0000000 /* OR addr mask */
+
+/* FLASH timing: ACS = 00, TRLX = 0, CSNT = 1, SCY = 8, EHTR = 0 */
+#define CFG_OR_TIMING_FLASH (OR_CSNT_SAM | OR_ACS_DIV1 | OR_BI | \
+ OR_SCY_8_CLK )
+
+#define CFG_OR0_REMAP (CFG_REMAP_OR_AM | CFG_OR_TIMING_FLASH)
+#define CFG_OR0_PRELIM (CFG_PRELIM_OR_AM | CFG_OR_TIMING_FLASH)
+#define CFG_BR0_PRELIM ((FLASH_BASE0_PRELIM & BR_BA_MSK) | BR_PS_16 | BR_V )
+
+/*
+ * BR1/2 and OR1/2 (SDRAM)
+ */
+#define SDRAM_BASE1_PRELIM 0x00000000 /* SDRAM bank #0 */
+#define SDRAM_BASE2_PRELIM 0x20000000 /* SDRAM bank #1 */
+#define SDRAM_MAX_SIZE 0x04000000 /* max 64 MB per bank */
+
+/* SDRAM timing: Multiplexed addresses, drive GPL5 high on first cycle */
+#define CFG_OR_TIMING_SDRAM (OR_G5LS | OR_CSNT_SAM)
+
+#define CFG_OR1_PRELIM (CFG_PRELIM_OR_AM | CFG_OR_TIMING_SDRAM )
+#define CFG_BR1_PRELIM ((SDRAM_BASE1_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )
+#define CFG_OR2_PRELIM CFG_OR1_PRELIM
+#define CFG_BR2_PRELIM ((SDRAM_BASE2_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_V )
+
+/* IO and memory mapped stuff */
+#define NX823_IO_OR_AM 0xFFFF0000 /* mask for IO addresses */
+#define NX823_IO_BASE 0xFF000000 /* start of IO */
+#define GPOUT_OFFSET (3<<16)
+#define QUART_OFFSET (4<<16)
+#define VIDAC_OFFSET (5<<16)
+#define CPLD_OFFSET (6<<16)
+#define SED1386_OFFSET (7<<16)
+
+/*
+ * BR3 and OR3 (general purpose output latches)
+ */
+#define GPOUT_BASE (NX823_IO_BASE + GPOUT_OFFSET)
+#define GPOUT_TIMING (OR_CSNT_SAM | OR_TRLX | OR_BI)
+#define CFG_OR3_PRELIM (NX823_IO_OR_AM | GPOUT_TIMING)
+#define CFG_BR3_PRELIM (GPOUT_BASE | BR_V)
+
+/*
+ * BR4 and OR4 (QUART)
+ */
+#define QUART_BASE (NX823_IO_BASE + QUART_OFFSET)
+#define QUART_TIMING (OR_ACS_DIV4 | OR_SCY_3_CLK | OR_CSNT_SAM | OR_TRLX)
+#define CFG_OR4_PRELIM (NX823_IO_OR_AM | QUART_TIMING | OR_BI)
+#define CFG_BR4_PRELIM (QUART_BASE | BR_PS_8 | BR_V)
+
+/*
+ * BR5 and OR5 (Video DAC)
+ */
+#define VIDAC_BASE (NX823_IO_BASE + VIDAC_OFFSET)
+#define VIDAC_TIMING (OR_ACS_DIV4 | OR_SCY_3_CLK | OR_CSNT_SAM | OR_EHTR)
+#define CFG_OR5_PRELIM (NX823_IO_OR_AM | VIDAC_TIMING | OR_BI)
+#define CFG_BR5_PRELIM (VIDAC_BASE | BR_PS_8 | BR_V)
+
+/*
+ * BR6 and OR6 (CPLD)
+ * FIXME timing not verified for CPLD
+ */
+#define CPLD_BASE (NX823_IO_BASE + CPLD_OFFSET)
+#define CPLD_TIMING (OR_ACS_DIV4 | OR_SCY_3_CLK | OR_CSNT_SAM | OR_EHTR)
+#define CFG_OR6_PRELIM (NX823_IO_OR_AM | CPLD_TIMING | OR_BI)
+#define CFG_BR6_PRELIM (CPLD_BASE | BR_PS_8 | BR_V )
+
+/*
+ * BR7 and OR7 (SED1386)
+ * FIXME timing not verified for SED controller
+ */
+#define SED1386_BASE 0xF7000000
+#define CFG_OR7_PRELIM (0xFF000000 | OR_BI | OR_SETA)
+#define CFG_BR7_PRELIM (SED1386_BASE | BR_PS_16 | BR_V )
+
+/*
+ * Memory Periodic Timer Prescaler
+ */
+
+/* periodic timer for refresh */
+#define CFG_MAMR_PTA 97 /* start with divider for 100 MHz */
+
+/* refresh rate 15.6 us (= 64 ms / 4K = 62.4 / quad bursts) for <= 128 MBit */
+#define CFG_MPTPR_2BK_4K MPTPR_PTP_DIV16 /* setting for 2 banks */
+#define CFG_MPTPR_1BK_4K MPTPR_PTP_DIV32 /* setting for 1 bank */
+
+/* refresh rate 7.8 us (= 64 ms / 8K = 31.2 / quad bursts) for 256 MBit */
+#define CFG_MPTPR_2BK_8K MPTPR_PTP_DIV8 /* setting for 2 banks */
+#define CFG_MPTPR_1BK_8K MPTPR_PTP_DIV16 /* setting for 1 bank */
+
+/*
+ * MAMR settings for SDRAM
+ */
+
+/* 8 column SDRAM */
+#define CFG_MAMR_8COL ((CFG_MAMR_PTA << MAMR_PTA_SHIFT) | MAMR_PTAE | \
+ MAMR_AMA_TYPE_0 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A11 | \
+ MAMR_RLFA_1X | MAMR_WLFA_1X | MAMR_TLFA_4X)
+/* 9 column SDRAM */
+#define CFG_MAMR_9COL ((CFG_MAMR_PTA << MAMR_PTA_SHIFT) | MAMR_PTAE | \
+ MAMR_AMA_TYPE_1 | MAMR_DSA_1_CYCL | MAMR_G0CLA_A10 | \
+ MAMR_RLFA_1X | MAMR_WLFA_1X | MAMR_TLFA_4X)
+
+
+/*
+ * Internal Definitions
+ *
+ * Boot Flags
+ */
+#define BOOTFLAG_COLD 0x01 /* Normal Power-On: Boot from FLASH */
+#define BOOTFLAG_WARM 0x02 /* Software reboot */
+
+#define CONFIG_ENV_OVERWRITE /* allow changes to ethaddr (for now) */
+#define CONFIG_ETHADDR 00:10:20:30:40:50
+#define CONFIG_IPADDR 10.77.77.20
+#define CONFIG_SERVERIP 10.77.77.250
+
+#endif /* __CONFIG_H */
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