include/configs/stxxtc.h

/*
 * (C) Copyright 2000-2004
 * 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
 */

/*
 * Dan Malek, Embedded Edge, LLC, dan@embeddededge.com
 * U-Boot port on STx XTc 8xx board
 * Mostly copied from Panto's NETTA2 board.
 */

#ifndef __CONFIG_H
#define __CONFIG_H

/*
 * High Level Configuration Options
 * (easy to change)
 */

#define CONFIG_MPC875		1	/* This is a MPC875 CPU		*/
#define CONFIG_STXXTC		1	/* ...on a STx XTc  board	*/

#define	CONFIG_8xx_CONS_SMC1	1	/* Console is on SMC1		*/
#undef	CONFIG_8xx_CONS_SMC2
#undef	CONFIG_8xx_CONS_NONE

#define CONFIG_BAUDRATE		115200	/* console baudrate = 115.2kbps	*/

#define CONFIG_XIN		10000000	/* 10 MHz input xtal */

/* Select one of few clock rates defined later in this file.
*/
/* #define MPC8XX_HZ		50000000 */
#define MPC8XX_HZ		66666666

#define CONFIG_8xx_GCLK_FREQ	MPC8XX_HZ

#if 0
#define CONFIG_BOOTDELAY	-1	/* autoboot disabled		*/
#else
#define CONFIG_BOOTDELAY	5	/* autoboot after 5 seconds	*/
#endif

#undef	CONFIG_CLOCKS_IN_MHZ	/* clocks NOT passsed to Linux in MHz */

#undef	CONFIG_BOOTARGS
#define CONFIG_BOOTCOMMAND							\
	"tftpboot; "								\
	"setenv bootargs root=/dev/nfs rw nfsroot=${serverip}:${rootpath} "	\
	"ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}:${hostname}::off; "	\
	"bootm"

#define CONFIG_SOURCE
#define CONFIG_LOADS_ECHO	0	/* echo off for serial download	*/
#undef	CONFIG_SYS_LOADS_BAUD_CHANGE		/* don't allow baudrate change	*/

#undef	CONFIG_WATCHDOG			/* watchdog disabled		*/

#define	CONFIG_STATUS_LED	1	/* Status LED enabled		*/
#define CONFIG_BOARD_SPECIFIC_LED	/* version has board specific leds */

/*
 * BOOTP options
 */
#define CONFIG_BOOTP_SUBNETMASK
#define CONFIG_BOOTP_GATEWAY
#define CONFIG_BOOTP_HOSTNAME
#define CONFIG_BOOTP_BOOTPATH
#define CONFIG_BOOTP_BOOTFILESIZE
#define CONFIG_BOOTP_NISDOMAIN


#undef CONFIG_MAC_PARTITION
#undef CONFIG_DOS_PARTITION

#define	CONFIG_RTC_MPC8xx		/* use internal RTC of MPC8xx	*/

#define	CONFIG_NET_MULTI	1	/* the only way to get the FEC in */
#define	FEC_ENET		1	/* eth.c needs it that way... */
#undef CONFIG_SYS_DISCOVER_PHY
#define CONFIG_MII		1
#define CONFIG_MII_INIT		1
#undef CONFIG_RMII

#define CONFIG_ETHER_ON_FEC1	1
#define CONFIG_FEC1_PHY		1	/* phy address of FEC */
#undef CONFIG_FEC1_PHY_NORXERR

#define CONFIG_ETHER_ON_FEC2	1
#define CONFIG_FEC2_PHY		3
#undef CONFIG_FEC2_PHY_NORXERR

#define CONFIG_ENV_OVERWRITE	1	/* allow modification of vendor params */


/*
 * Command line configuration.
 */
#include <config_cmd_default.h>

#define CONFIG_CMD_DHCP
#define CONFIG_CMD_MII
#define CONFIG_CMD_NFS
#define CONFIG_CMD_PING


#define CONFIG_BOARD_EARLY_INIT_F	1
#define CONFIG_MISC_INIT_R

/*
 * Miscellaneous configurable options
 */
#define	CONFIG_SYS_LONGHELP			/* undef to save memory		*/
#define	CONFIG_SYS_PROMPT	"xtc> "		/* Monitor Command Prompt	*/

#define CONFIG_SYS_HUSH_PARSER	1
#define CONFIG_SYS_PROMPT_HUSH_PS2	"> "

#if defined(CONFIG_CMD_KGDB)
#define	CONFIG_SYS_CBSIZE	1024		/* Console I/O Buffer Size	*/
#else
#define	CONFIG_SYS_CBSIZE	256		/* Console I/O Buffer Size	*/
#endif
#define	CONFIG_SYS_PBSIZE (CONFIG_SYS_CBSIZE+sizeof(CONFIG_SYS_PROMPT)+16) /* Print Buffer Size */
#define	CONFIG_SYS_MAXARGS	16		/* max number of command args	*/
#define CONFIG_SYS_BARGSIZE	CONFIG_SYS_CBSIZE	/* Boot Argument Buffer Size	*/

#define CONFIG_SYS_MEMTEST_START	0x0300000	/* memtest works on	*/
#define CONFIG_SYS_MEMTEST_END		0x0700000	/* 3 ... 7 MB in DRAM	*/

#define	CONFIG_SYS_LOAD_ADDR		0x100000	/* default load address	*/

#define	CONFIG_SYS_HZ		1000		/* decrementer freq: 1 ms ticks	*/

#define CONFIG_SYS_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 CONFIG_SYS_IMMR		0xFF000000

/*-----------------------------------------------------------------------
 * Definitions for initial stack pointer and data area (in DPRAM)
 */
#define CONFIG_SYS_INIT_RAM_ADDR	CONFIG_SYS_IMMR
#define	CONFIG_SYS_INIT_RAM_END	0x3000	/* End of used area in DPRAM	*/
#define	CONFIG_SYS_GBL_DATA_SIZE	64  /* size in bytes reserved for initial data */
#define CONFIG_SYS_GBL_DATA_OFFSET	(CONFIG_SYS_INIT_RAM_END - CONFIG_SYS_GBL_DATA_SIZE)
#define	CONFIG_SYS_INIT_SP_OFFSET	CONFIG_SYS_GBL_DATA_OFFSET

/*-----------------------------------------------------------------------
 * Start addresses for the final memory configuration
 * (Set up by the startup code)
 * Please note that CONFIG_SYS_SDRAM_BASE _must_ start at 0
 */
#define	CONFIG_SYS_SDRAM_BASE		0x00000000
#define CONFIG_SYS_FLASH_BASE		0x40000000
#if defined(DEBUG)
#define	CONFIG_SYS_MONITOR_LEN		(256 << 10)	/* Reserve 256 kB for Monitor	*/
#else
#define	CONFIG_SYS_MONITOR_LEN		(192 << 10)	/* Reserve 192 kB for Monitor	*/
#endif

/* yes this is weird, I know :) */
#define CONFIG_SYS_MONITOR_BASE	(CONFIG_SYS_FLASH_BASE | 0x00F00000)
#define	CONFIG_SYS_MALLOC_LEN		(128 << 10)	/* Reserve 128 kB for malloc()	*/

#define CONFIG_SYS_RESET_ADDRESS	0x80000000

/*
 * 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	CONFIG_SYS_BOOTMAPSZ		(8 << 20)	/* Initial Memory map for Linux	*/

/*-----------------------------------------------------------------------
 * FLASH organization
 */
#define	CONFIG_ENV_IS_IN_FLASH	1
#define CONFIG_ENV_SECT_SIZE	0x10000

#define	CONFIG_ENV_ADDR		(CONFIG_SYS_FLASH_BASE + 0x00000000)
#define CONFIG_ENV_OFFSET		0
#define	CONFIG_ENV_SIZE		0x4000

#define CONFIG_ENV_ADDR_REDUND	(CONFIG_SYS_FLASH_BASE + 0x00010000)
#define CONFIG_ENV_OFFSET_REDUND	0
#define CONFIG_ENV_SIZE_REDUND	CONFIG_ENV_SIZE

#define CONFIG_SYS_FLASH_CFI		1
#define CONFIG_FLASH_CFI_DRIVER	1
#undef CONFIG_SYS_FLASH_USE_BUFFER_WRITE	/* use buffered writes (20x faster) */
#define CONFIG_SYS_MAX_FLASH_SECT	128	/* max number of sectors on one chip */
#define CONFIG_SYS_MAX_FLASH_BANKS	2	/* max number of memory banks	*/

#define CONFIG_SYS_FLASH_BANKS_LIST { CONFIG_SYS_FLASH_BASE, CONFIG_SYS_FLASH_BASE + 0x2000000 }

#define CONFIG_SYS_FLASH_PROTECTION

/*-----------------------------------------------------------------------
 * Cache Configuration
 */
#define CONFIG_SYS_CACHELINE_SIZE	16	/* For all MPC8xx CPUs */
#if defined(CONFIG_CMD_KGDB)
#define CONFIG_SYS_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 CONFIG_SYS_SYPCR	(SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | \
			 SYPCR_SWE  | SYPCR_SWRI| SYPCR_SWP)
#else
#define CONFIG_SYS_SYPCR	(SYPCR_SWTC | SYPCR_BMT | SYPCR_BME | SYPCR_SWF | SYPCR_SWP)
#endif

/*-----------------------------------------------------------------------
 * SIUMCR - SIU Module Configuration				11-6
 *-----------------------------------------------------------------------
 * PCMCIA config., multi-function pin tri-state
 */
#define CONFIG_SYS_SIUMCR	(SIUMCR_DBGC00 | SIUMCR_DBPC00 | SIUMCR_MLRC01 | SIUMCR_FRC | SIUMCR_GB5E)

/*-----------------------------------------------------------------------
 * TBSCR - Time Base Status and Control				11-26
 *-----------------------------------------------------------------------
 * Clear Reference Interrupt Status, Timebase freezing enabled
 */
#define CONFIG_SYS_TBSCR	(TBSCR_REFA | TBSCR_REFB | TBSCR_TBF)

/*-----------------------------------------------------------------------
 * RTCSC - Real-Time Clock Status and Control Register		11-27
 *-----------------------------------------------------------------------
 */
#define CONFIG_SYS_RTCSC	(RTCSC_SEC | RTCSC_ALR | RTCSC_RTF| RTCSC_RTE)

/*-----------------------------------------------------------------------
 * PISCR - Periodic Interrupt Status and Control		11-31
 *-----------------------------------------------------------------------
 * Clear Periodic Interrupt Status, Interrupt Timer freezing enabled
 */
#define CONFIG_SYS_PISCR	(PISCR_PS | PISCR_PITF)

/*-----------------------------------------------------------------------
 * PLPRCR - PLL, Low-Power, and Reset Control Register		15-30
 *-----------------------------------------------------------------------
 * Reset PLL lock status sticky bit, timer expired status bit and timer
 * interrupt status bit
 *
 */

#if CONFIG_XIN == 10000000

#if MPC8XX_HZ == 50000000
#define CONFIG_SYS_PLPRCR	((0 << PLPRCR_MFN_SHIFT) | (0 << PLPRCR_MFD_SHIFT) | \
			 (1 << PLPRCR_S_SHIFT) | (10 << PLPRCR_MFI_SHIFT) | (0 << PLPRCR_PDF_SHIFT) | \
			 PLPRCR_TEXPS)
#elif MPC8XX_HZ == 66666666
#define CONFIG_SYS_PLPRCR	((1 << PLPRCR_MFN_SHIFT) | (2 << PLPRCR_MFD_SHIFT) | \
			 (1 << PLPRCR_S_SHIFT) | (13 << PLPRCR_MFI_SHIFT) | (0 << PLPRCR_PDF_SHIFT) | \
			 PLPRCR_TEXPS)
#else
#error unsupported CPU freq for XIN = 10MHz
#endif
#else
#error unsupported freq for XIN (must be 10MHz)
#endif


/*
 *-----------------------------------------------------------------------
 * SCCR - System Clock and reset Control Register		15-27
 *-----------------------------------------------------------------------
 * Set clock output, timebase and RTC source and divider,
 * power management and some other internal clocks
 *
 * Note: When TBS == 0 the timebase is independent of current cpu clock.
 */

#define SCCR_MASK	SCCR_EBDF11
#if MPC8XX_HZ > 66666666
#define CONFIG_SYS_SCCR	(/* SCCR_TBS     | */ SCCR_CRQEN | \
			 SCCR_COM00   | SCCR_DFSYNC00 | SCCR_DFBRG00  | \
			 SCCR_DFNL000 | SCCR_DFNH000  | SCCR_DFLCD000 | \
			 SCCR_DFALCD00 | SCCR_EBDF01)
#else
#define CONFIG_SYS_SCCR	(/* SCCR_TBS     | */ SCCR_CRQEN | \
			 SCCR_COM00   | SCCR_DFSYNC00 | SCCR_DFBRG00  | \
			 SCCR_DFNL000 | SCCR_DFNH000  | SCCR_DFLCD000 | \
			 SCCR_DFALCD00)
#endif

/*-----------------------------------------------------------------------
 *
 *-----------------------------------------------------------------------
 *
 */
/*#define	CONFIG_SYS_DER	0x2002000F*/
#define CONFIG_SYS_DER	0

/*
 * Init Memory Controller:
 *
 * BR0/1 and OR0/1 (FLASH)
 */

#define FLASH_BASE0_PRELIM	0x40000000	/* FLASH bank #0	*/
#define FLASH_BASE1_PRELIM	0x42000000	/* FLASH bank #1	*/

/* 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 FLASH_BANK_MAX_SIZE	0x01000000	/* max size per chip */

#define CONFIG_SYS_REMAP_OR_AM		0x80000000
#define CONFIG_SYS_PRELIM_OR_AM	(0xFFFFFFFFLU & ~(FLASH_BANK_MAX_SIZE - 1))

/* FLASH timing: ACS = 11, TRLX = 0, CSNT = 1, SCY = 5, EHTR = 1	*/
#define CONFIG_SYS_OR_TIMING_FLASH	(OR_CSNT_SAM  | OR_BI | OR_SCY_5_CLK | OR_TRLX)

#define CONFIG_SYS_OR0_REMAP	(CONFIG_SYS_REMAP_OR_AM  | CONFIG_SYS_OR_TIMING_FLASH)
#define CONFIG_SYS_OR0_PRELIM	(CONFIG_SYS_PRELIM_OR_AM | CONFIG_SYS_OR_TIMING_FLASH)
#define CONFIG_SYS_BR0_PRELIM	((FLASH_BASE0_PRELIM & BR_BA_MSK) | BR_PS_16 | BR_V )

#define CONFIG_SYS_OR1_PRELIM	((0xFFFFFFFFLU & ~(FLASH_BANK_MAX_SIZE - 1)) | CONFIG_SYS_OR_TIMING_FLASH)
#define CONFIG_SYS_BR1_PRELIM	((FLASH_BASE1_PRELIM & BR_BA_MSK) | BR_PS_16 | BR_V )

/*
 * BR4 and OR4 (SDRAM)
 *
 */
#define SDRAM_BASE1_PRELIM	0x00000000	/* SDRAM bank #0	*/
#define	SDRAM_MAX_SIZE		(256 << 20)	/* max 256MB per bank	*/

/* SDRAM timing: Multiplexed addresses, GPL5 output to GPL5_A (don't care)	*/
#define CONFIG_SYS_OR_TIMING_SDRAM	(OR_CSNT_SAM | OR_G5LS)

#define CONFIG_SYS_OR4_PRELIM	((0xFFFFFFFFLU & ~(SDRAM_MAX_SIZE - 1)) | CONFIG_SYS_OR_TIMING_SDRAM)
#define CONFIG_SYS_BR4_PRELIM	((SDRAM_BASE1_PRELIM & BR_BA_MSK) | BR_MS_UPMA | BR_PS_32 | BR_V)

/*
 * Memory Periodic Timer Prescaler
 */

/*
 * Memory Periodic Timer Prescaler
 *
 * The Divider for PTA (refresh timer) configuration is based on an
 * example SDRAM configuration (64 MBit, one bank). The adjustment to
 * the number of chip selects (NCS) and the actually needed refresh
 * rate is done by setting MPTPR.
 *
 * PTA is calculated from
 *	PTA = (gclk * Trefresh) / ((2 ^ (2 * DFBRG)) * PTP * NCS)
 *
 *	gclk	  CPU clock (not bus clock!)
 *	Trefresh  Refresh cycle * 4 (four word bursts used)
 *
 * 4096  Rows from SDRAM example configuration
 * 1000  factor s -> ms
 *   32  PTP (pre-divider from MPTPR) from SDRAM example configuration
 *    4  Number of refresh cycles per period
 *   64  Refresh cycle in ms per number of rows
 * --------------------------------------------
 * Divider = 4096 * 32 * 1000 / (4 * 64) = 512000
 *
 * 50 MHz => 50.000.000 / Divider =  98
 * 66 Mhz => 66.000.000 / Divider = 129
 * 80 Mhz => 80.000.000 / Divider = 156
 */

#define CONFIG_SYS_MAMR_PTA		 234

/*
 * For 16 MBit, refresh rates could be 31.3 us
 * (= 64 ms / 2K = 125 / quad bursts).
 * For a simpler initialization, 15.6 us is used instead.
 *
 * #define CONFIG_SYS_MPTPR_2BK_2K	MPTPR_PTP_DIV32		for 2 banks
 * #define CONFIG_SYS_MPTPR_1BK_2K	MPTPR_PTP_DIV64		for 1 bank
 */
#define CONFIG_SYS_MPTPR_2BK_4K	MPTPR_PTP_DIV16		/* setting for 2 banks	*/
#define CONFIG_SYS_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 CONFIG_SYS_MPTPR_2BK_8K	MPTPR_PTP_DIV8		/* setting for 2 banks	*/
#define CONFIG_SYS_MPTPR_1BK_8K	MPTPR_PTP_DIV16		/* setting for 1 bank	*/

/*
 * MAMR settings for SDRAM
 */

/* 8 column SDRAM */
#define CONFIG_SYS_MAMR_8COL	((CONFIG_SYS_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 CONFIG_SYS_MAMR_9COL	((CONFIG_SYS_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_LAST_STAGE_INIT		/* needed to reset the damn phys */

/****************************************************************/

#define NAND_SIZE	0x00010000	/* 64K */
#define NAND_BASE	0xF1000000

/*****************************************************************************/

#define CONFIG_SYS_DIRECT_FLASH_TFTP

/*****************************************************************************/

/* Status Leds are on the MODCK pins, which become the PCMCIA PGCRB,
 * CxOE and CxRESET.  We use the CxOE.
 */
#define STATUS_LED_BIT		0x00000080		/* bit 24 */

#define STATUS_LED_PERIOD	(CONFIG_SYS_HZ / 2)
#define STATUS_LED_STATE	STATUS_LED_BLINKING

#define STATUS_LED_ACTIVE	0		/* LED on for bit == 0	*/
#define STATUS_LED_BOOT		0		/* LED 0 used for boot status */

#ifndef __ASSEMBLY__

/* LEDs */

/* led_id_t is unsigned int mask */
typedef unsigned int led_id_t;

#define __led_toggle(_msk) \
	do { \
		((volatile immap_t *)CONFIG_SYS_IMMR)->im_pcmcia.pcmc_pgcrb ^= (_msk); \
	} while(0)

#define __led_set(_msk, _st) \
	do { \
		if ((_st)) \
			((volatile immap_t *)CONFIG_SYS_IMMR)->im_pcmcia.pcmc_pgcrb |= (_msk); \
		else \
			((volatile immap_t *)CONFIG_SYS_IMMR)->im_pcmcia.pcmc_pgcrb &= ~(_msk); \
	} while(0)

#define __led_init(msk, st) __led_set(msk, st)

#endif

/******************************************************************************/

#define CONFIG_SYS_CONSOLE_IS_IN_ENV		1
#define CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE	1
#define CONFIG_SYS_CONSOLE_ENV_OVERWRITE	1

/******************************************************************************/

/* use board specific hardware */
#undef	CONFIG_WATCHDOG			/* watchdog disabled		*/
#define CONFIG_HW_WATCHDOG

/*****************************************************************************/

#define CONFIG_AUTO_COMPLETE	1
#define CONFIG_CRC32_VERIFY	1
#define CONFIG_HUSH_OLD_PARSER_COMPATIBLE	1

/*****************************************************************************/

/* pass open firmware flattened device tree */
#define CONFIG_OF_LIBFDT	1

#define OF_TBCLK		(MPC8XX_HZ / 16)

#endif	/* __CONFIG_H */