[PATCH] Add support for Prodrive P3M750 & P3M7448 (P3Mx) boards

This patch adds support for the Prodrive P3M750 (PPC750 & MV64460)
and the P3M7448 (MPC7448 & MV64460) PMC modules. Both modules are
quite similar and share the same board directory "prodrive/p3mx"
and the same config file "p3mx.h".

Signed-off-by: Stefan Roese <sr@denx.de>

1 files changed, 450 insertions, 0 deletions

diff --git a/include/configs/p3mx.h b/include/configs/p3mx.h
new file mode 100644
index 0000000..262e9d6
--- /dev/null
+++ b/include/configs/p3mx.h
@@ -0,0 +1,450 @@
+/*
+ * (C) Copyright 2006
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * Based on original work by
+ *      Roel Loeffen, (C) Copyright 2006 Prodrive B.V.
+ *
+ * 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
+ */
+
+/************************************************************************
+ * p3mx.h - configuration for Prodrive P3M750 & P3M7448 boards
+ *
+ * The defines:
+ * CONFIG_P3M750 or
+ * CONFIG_P3M7448
+ * are written into include/config.h by the "make xxx_config" command
+ ***********************************************************************/
+#ifndef __CONFIG_H
+#define __CONFIG_H
+
+/*-----------------------------------------------------------------------
+ * High Level Configuration Options
+ *----------------------------------------------------------------------*/
+#define CONFIG_P3Mx			/* used for both board versions	*/
+
+#if defined (CONFIG_P3M750)
+#define CONFIG_750FX			/* 750GL/GX/FX			*/
+#define CFG_BOARD_NAME		"P3M750"
+#define CFG_BUS_HZ		100000000
+#define CFG_BUS_CLK		CFG_BUS_HZ
+#define CFG_TCLK		100000000
+#elif defined (CONFIG_P3M7448)
+#define CONFIG_74xx
+#define CFG_BOARD_NAME		"P3M7448"
+#define CFG_BUS_HZ		133333333
+#define CFG_BUS_CLK		CFG_BUS_HZ
+#define CFG_TCLK		133333333
+#endif
+#define CFG_GT_DUAL_CPU			/* also for JTAG even with one cpu */
+
+/* which initialization functions to call for this board */
+#define CFG_BOARD_ASM_INIT	1
+#define CONFIG_BOARD_EARLY_INIT_F 1     /* Call board_early_init_f	*/
+#define CONFIG_BOARD_EARLY_INIT_R 1     /* Call board_early_init_f	*/
+#define CONFIG_MISC_INIT_R      1	/* Call misc_init_r()		*/
+#define CONFIG_ADD_RAM_INFO	1	/* Print additional info	*/
+
+/*-----------------------------------------------------------------------
+ * Base addresses -- Note these are effective addresses where the
+ * actual resources get mapped (not physical addresses)
+ *----------------------------------------------------------------------*/
+#define CFG_SDRAM_BASE		0x00000000
+#ifdef CONFIG_P3M750
+#define CFG_SDRAM1_BASE		0x10000000	/* each 256 MByte	*/
+#endif
+
+#define CFG_MONITOR_LEN		(256 << 10)	/* Reserve 256 kB for Monitor */
+#if defined (CONFIG_P3M750)
+#define CFG_FLASH_BASE		0xff800000	/* start of flash banks	*/
+#define CFG_BOOT_SIZE		_8M		/* boot flash		*/
+#elif defined (CONFIG_P3M7448)
+#define CFG_FLASH_BASE		0xff000000	/* start of flash banks	*/
+#define CFG_BOOT_SIZE		_16M		/* boot flash		*/
+#endif
+#define CFG_BOOT_SPACE		CFG_FLASH_BASE	/* BOOT_CS0 flash 0    */
+#define CFG_MONITOR_BASE	0xfff00000
+#define CFG_RESET_ADDRESS	0xfff00100
+#define CFG_MALLOC_LEN		(256 << 10)	/* Reserve 256 kB for malloc */
+#define CFG_MISC_REGION_BASE	0xf0000000
+
+#define CFG_DFL_GT_REGS		0xf1000000	/* boot time GT_REGS */
+#define CFG_GT_REGS		0xf1000000	/* GT Registers are mapped here */
+#define CFG_INT_SRAM_BASE	0x42000000	/* GT offers 256k internal SRAM */
+
+/*-----------------------------------------------------------------------
+ * Initial RAM & stack pointer (placed in internal SRAM)
+ *----------------------------------------------------------------------*/
+ /*
+ * When locking data in cache you should point the CFG_INIT_RAM_ADDRESS
+ * To an unused memory region. The stack will remain in cache until RAM
+ * is initialized
+*/
+#undef	CFG_INIT_RAM_LOCK
+#define CFG_INIT_RAM_ADDR	0x42000000
+#define CFG_INIT_RAM_END	0x1000
+#define CFG_GBL_DATA_SIZE	128  /* size in bytes reserved for init data */
+#define CFG_GBL_DATA_OFFSET	(CFG_INIT_RAM_END - CFG_GBL_DATA_SIZE)
+
+
+/*-----------------------------------------------------------------------
+ * Serial Port
+ *----------------------------------------------------------------------*/
+#define CONFIG_MPSC			/* MV64460 Serial		*/
+#define CONFIG_MPSC_PORT	0
+#define CONFIG_BAUDRATE		115200	/* console baudrate		*/
+#define CFG_BAUDRATE_TABLE	{ 9600, 19200, 38400, 57600, 115200, 230400 }
+#define CONFIG_LOADS_ECHO	1	/* echo on for serial download	*/
+#define CFG_LOADS_BAUD_CHANGE	1	/* allow baudrate change	*/
+
+/*-----------------------------------------------------------------------
+ * Ethernet
+ *----------------------------------------------------------------------*/
+/* Change the default ethernet port, use this define (options: 0, 1, 2) */
+#define CFG_ETH_PORT		ETH_0
+#define CONFIG_NET_MULTI
+#define MV_ETH_DEVS		2
+#define CONFIG_PHY_RESET        1	/* reset phy upon startup         */
+#define CONFIG_PHY_GIGE		1	/* Include GbE speed/duplex detection */
+
+/*-----------------------------------------------------------------------
+ * FLASH related
+ *----------------------------------------------------------------------*/
+#define CFG_FLASH_CFI			/* The flash is CFI compatible		*/
+#define CFG_FLASH_CFI_DRIVER		/* Use common CFI driver		*/
+#define CFG_MAX_FLASH_BANKS	1	/* max number of memory banks		*/
+#define CFG_MAX_FLASH_SECT	512	/* 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_FLASH_USE_BUFFER_WRITE 1	/* use buffered writes (20x faster)	*/
+#define CFG_FLASH_PROTECTION	1	/* use hardware flash protection	*/
+#define CFG_FLASH_EMPTY_INFO		/* print 'E' for empty sector on flinfo */
+
+#define CFG_ENV_IS_IN_FLASH     1	/* use FLASH for environment vars	*/
+#if defined (CONFIG_P3M750)
+#define CFG_ENV_SECT_SIZE	0x20000 	/* one sector (1 device)*/
+#elif defined (CONFIG_P3M7448)
+#define CFG_ENV_SECT_SIZE	0x40000 	/* two sectors (2 devices parallel */
+#endif
+#define	CFG_ENV_SIZE		0x2000	/* Total Size of Environment Sector	*/
+#define CFG_ENV_ADDR		(CFG_MONITOR_BASE + CFG_MONITOR_LEN)
+
+/*-----------------------------------------------------------------------
+ * DDR SDRAM
+ *----------------------------------------------------------------------*/
+#define CONFIG_MV64460_ECC
+
+/*-----------------------------------------------------------------------
+ * I2C
+ *----------------------------------------------------------------------*/
+#define CFG_I2C_SPEED		100000		/* I2C speed default	*/
+
+/* I2C RTC */
+#define CONFIG_RTC_M41T11	1
+#define CFG_I2C_RTC_ADDR	0x68
+#define CFG_M41T11_BASE_YEAR	1900	/* play along with linux	*/
+
+/*-----------------------------------------------------------------------
+ * PCI stuff
+ *----------------------------------------------------------------------*/
+#define PCI_HOST_ADAPTER 0		/* configure ar pci adapter	*/
+#define PCI_HOST_FORCE	1		/* configure as pci host	*/
+#define PCI_HOST_AUTO	2		/* detected via arbiter enable	*/
+
+#define CONFIG_PCI			/* include pci support		*/
+#define CONFIG_PCI_HOST PCI_HOST_FORCE	/* select pci host function	*/
+#define CONFIG_PCI_PNP			/* do pci plug-and-play		*/
+#define CONFIG_PCI_SCAN_SHOW		/* show devices on bus		*/
+
+/* PCI MEMORY MAP section */
+#define CFG_PCI0_MEM_BASE	0x80000000
+#define CFG_PCI0_MEM_SIZE	_128M
+#define CFG_PCI1_MEM_BASE	0x88000000
+#define CFG_PCI1_MEM_SIZE	_128M
+
+#define CFG_PCI0_0_MEM_SPACE	(CFG_PCI0_MEM_BASE)
+#define CFG_PCI1_0_MEM_SPACE	(CFG_PCI1_MEM_BASE)
+
+/* PCI I/O MAP section */
+#define CFG_PCI0_IO_BASE	0xfa000000
+#define CFG_PCI0_IO_SIZE	_16M
+#define CFG_PCI1_IO_BASE	0xfb000000
+#define CFG_PCI1_IO_SIZE	_16M
+
+#define CFG_PCI0_IO_SPACE	(CFG_PCI0_IO_BASE)
+#define CFG_PCI0_IO_SPACE_PCI	0x00000000
+#define CFG_PCI1_IO_SPACE	(CFG_PCI1_IO_BASE)
+#define CFG_PCI1_IO_SPACE_PCI	0x00000000
+
+#define CFG_ISA_IO_BASE_ADDRESS (CFG_PCI0_IO_BASE)
+
+#define CFG_PCI_IDSEL 0x30
+
+#undef	CONFIG_BOOTARGS
+#define	CONFIG_EXTRA_ENV_SETTINGS_COMMON				\
+	"netdev=eth0\0"							\
+	"nfsargs=setenv bootargs root=/dev/nfs rw "			\
+		"nfsroot=${serverip}:${rootpath}\0"			\
+	"ramargs=setenv bootargs root=/dev/ram rw\0"			\
+	"addip=setenv bootargs ${bootargs} "				\
+		"ip=${ipaddr}:${serverip}:${gatewayip}:${netmask}"	\
+		":${hostname}:${netdev}:off panic=1\0"			\
+	"addtty=setenv bootargs ${bootargs} console=ttyS0,${baudrate}\0"\
+	"flash_nfs=run nfsargs addip addtty;"				\
+		"bootm ${kernel_addr}\0"				\
+	"flash_self=run ramargs addip addtty;"				\
+		"bootm ${kernel_addr} ${ramdisk_addr}\0"		\
+	"net_nfs=tftp 200000 ${bootfile};run nfsargs addip addtty;"     \
+	        "bootm\0"						\
+	"rootpath=/opt/eldk/ppc_6xx\0"					\
+	"u-boot=p3mx/u-boot/u-boot.bin\0"				\
+	"load=tftp 100000 ${u-boot}\0"					\
+	"update=protect off fff00000 fff3ffff;era fff00000 fff3ffff;"	\
+		"cp.b 100000 fff00000 40000;"			        \
+		"setenv filesize;saveenv\0"				\
+	"upd=run load;run update\0"					\
+	"serverip=11.0.0.152\0"
+
+#if defined (CONFIG_P3M750)
+#define CONFIG_EXTRA_ENV_SETTINGS					\
+	CONFIG_EXTRA_ENV_SETTINGS_COMMON				\
+	"hostname=p3m750\0"						\
+	"bootfile=/tftpboot/p3mx/vxWorks.st\0"				\
+	"kernel_addr=fc000000\0"					\
+	"ramdisk_addr=fc180000\0"					\
+	"vxfile=p3m750/vxWorks\0"					\
+	"vxuser=ddg\0"							\
+	"vxpass=ddg\0"							\
+	"vxtarget=target\0"						\
+	"vxflags=0x8\0"							\
+	"vxargs=setenv bootargs mgi(0,0)host:${vxfile} h=${serverip} "	\
+		"e=${ipaddr} u=${vxuser} pw=${vxpass} tn=${vxtarget} "	\
+		"f=${vxflags}\0"
+#elif defined (CONFIG_P3M7448)
+#define CONFIG_EXTRA_ENV_SETTINGS					\
+	CONFIG_EXTRA_ENV_SETTINGS_COMMON				\
+	"hostname=p3m7448\0"
+#endif
+
+#if defined (CONFIG_P3M750)
+#define CONFIG_BOOTCOMMAND	"tftp;run vxargs;bootvx"
+#elif defined (CONFIG_P3M7448)
+#define CONFIG_BOOTCOMMAND	" "
+#endif
+
+#define CONFIG_BOOTDELAY	3	/* autoboot after 5 seconds */
+#define CONFIG_BOOTP_MASK	(CONFIG_BOOTP_DEFAULT | \
+				 CONFIG_BOOTP_BOOTFILESIZE)
+#define CONFIG_COMMANDS	       (CONFIG_CMD_DFL	| \
+				CFG_CMD_ASKENV	| \
+				CFG_CMD_DATE	| \
+				CFG_CMD_DIAG	| \
+				CFG_CMD_ELF	| \
+				CFG_CMD_I2C	| \
+				CFG_CMD_IRQ	| \
+				CFG_CMD_MII	| \
+				CFG_CMD_NET	| \
+				CFG_CMD_NFS	| \
+				CFG_CMD_PING	| \
+				CFG_CMD_REGINFO	| \
+				CFG_CMD_PCI	| \
+				CFG_CMD_CACHE   | \
+				CFG_CMD_SDRAM)
+
+/* this must be included AFTER the definition of CONFIG_COMMANDS (if any) */
+#include <cmd_confdefs.h>
+
+/*-----------------------------------------------------------------------
+ * Miscellaneous configurable options
+ *----------------------------------------------------------------------*/
+#define CFG_HUSH_PARSER
+#define CFG_PROMPT_HUSH_PS2	"> "
+
+#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		0x08000000	/* default load address */
+
+#define CFG_HZ		        1000	/* decrementer freq: 1 ms ticks */
+
+#define CONFIG_CMDLINE_EDITING	1	/* add command line history	*/
+#define CONFIG_LOOPW            1       /* enable loopw command         */
+#define CONFIG_MX_CYCLIC        1       /* enable mdc/mwc commands      */
+#define CONFIG_ZERO_BOOTDELAY_CHECK	/* check for keypress on bootdelay==0 */
+#define CONFIG_VERSION_VARIABLE 1	/* include version env variable */
+
+/*-----------------------------------------------------------------------
+ * Marvell MV64460 config settings
+ *----------------------------------------------------------------------*/
+/* Reset values for Port behavior (8bit/ 32bit, etc.) only corrected device width */
+#if defined (CONFIG_P3M750)
+#define CFG_BOOT_PAR		0x8FDFF87F	/* 16 bit flash, disable burst*/
+#elif defined (CONFIG_P3M7448)
+#define CFG_BOOT_PAR		0x8FEFFFFF	/* 32 bit flash, burst enabled */
+#endif
+
+/*
+ * MPP[0]	Serial Port 0 TxD	TxD	OUT	Connected to P14 (buffered)
+ * MPP[1]	Serial Port 0 RxD	RxD	IN	Connected to P14 (buffered)
+ * MPP[2]	NC
+ * MPP[3]	Serial Port 1 TxD	TxD	OUT	Connected to P14 (buffered)
+ * MPP[4]	PCI Monarch#		GPIO	IN	Connected to P12
+ * MPP[5]	Serial Port 1 RxD	RxD	IN	Connected to P14 (buffered)
+ * MPP[6]	PMC Carrier Interrupt 0	Int	IN	Connected to P14
+ * MPP[7]	PMC Carrier Interrupt 1	Int	IN	Connected to P14
+ * MPP[8]	Reserved				Do not use
+ * MPP[9]	Reserved				Do not use
+ * MPP[10]	Reserved				Do not use
+ * MPP[11]	Reserved				Do not use
+ * MPP[12]	Phy 0 Interrupt		Int	IN
+ * MPP[13]	Phy 1 Interrupt		Int	IN
+ * MPP[14]	NC
+ * MPP[15]	NC
+ * MPP[16]	PCI Interrupt C		Int	IN	Connected to P11
+ * MPP[17]	PCI Interrupt D		Int	IN	Connected to P11
+ * MPP[18]	Watchdog NMI#		GPIO	IN	Connected to MPP[24]
+ * MPP[19]	Watchdog Expired#	WDE	OUT	Connected to rst logic
+ * MPP[20]	Watchdog Status		WD_STS	IN	Read back of rst by watchdog
+ * MPP[21]	NC
+ * MPP[22]	GP LED Green		GPIO	OUT
+ * MPP[23]	GP LED Red		GPIO	OUT
+ * MPP[24]	Watchdog NMI#		Int	OUT
+ * MPP[25]	NC
+ * MPP[26]	NC
+ * MPP[27]	PCI Interrupt A		Int	IN	Connected to P11
+ * MPP[28]	NC
+ * MPP[29]	PCI Interrupt B		Int	IN	Connected to P11
+ * MPP[30]	Module reset		GPIO	OUT	Board reset
+ * MPP[31]	PCI EReady		GPIO	IN	Connected to P12
+ */
+#define CFG_MPP_CONTROL_0	0x00303022
+#define CFG_MPP_CONTROL_1	0x00000000
+#define CFG_MPP_CONTROL_2	0x00004000
+#define CFG_MPP_CONTROL_3	0x00000004
+#define CFG_GPP_LEVEL_CONTROL	0x280730D0
+
+/*----------------------------------------------------------------------
+ * Initial BAT mappings
+ */
+
+/* NOTES:
+ * 1) GUARDED and WRITE_THRU not allowed in IBATS
+ * 2) CACHEINHIBIT and WRITETHROUGH not allowed together in same BAT
+ */
+/* SDRAM */
+#define CFG_IBAT0L (CFG_SDRAM_BASE | BATL_PP_RW | BATL_CACHEINHIBIT)
+#define CFG_IBAT0U (CFG_SDRAM_BASE | BATU_BL_256M | BATU_VS | BATU_VP)
+#define CFG_DBAT0L (CFG_SDRAM_BASE | BATL_PP_RW | BATL_GUARDEDSTORAGE | BATL_CACHEINHIBIT)
+#define CFG_DBAT0U CFG_IBAT0U
+
+/* init ram */
+#define CFG_IBAT1L  (CFG_INIT_RAM_ADDR | BATL_PP_RW | BATL_MEMCOHERENCE)
+#define CFG_IBAT1U  (CFG_INIT_RAM_ADDR | BATU_BL_256K | BATU_VS | BATU_VP)
+#define CFG_DBAT1L  CFG_IBAT1L
+#define CFG_DBAT1U  CFG_IBAT1U
+
+/* PCI0, PCI1 in one BAT */
+#define CFG_IBAT2L BATL_NO_ACCESS
+#define CFG_IBAT2U CFG_DBAT2U
+#define CFG_DBAT2L (CFG_PCI0_MEM_BASE | BATL_CACHEINHIBIT | BATL_PP_RW | BATL_GUARDEDSTORAGE)
+#define CFG_DBAT2U (CFG_PCI0_MEM_BASE | BATU_BL_256M | BATU_VS | BATU_VP)
+
+/* GT regs, bootrom, all the devices, PCI I/O */
+#define CFG_IBAT3L (CFG_MISC_REGION_BASE | BATL_CACHEINHIBIT | BATL_PP_RW)
+#define CFG_IBAT3U (CFG_MISC_REGION_BASE | BATU_VS | BATU_VP | BATU_BL_256M)
+#define CFG_DBAT3L (CFG_MISC_REGION_BASE | BATL_CACHEINHIBIT | BATL_PP_RW | BATL_GUARDEDSTORAGE)
+#define CFG_DBAT3U CFG_IBAT3U
+
+#define CFG_IBAT4L (CFG_SDRAM1_BASE | BATL_PP_RW | BATL_CACHEINHIBIT)
+#define CFG_IBAT4U (CFG_SDRAM1_BASE | BATU_BL_256M | BATU_VS | BATU_VP)
+#define CFG_DBAT4L (CFG_SDRAM1_BASE | BATL_PP_RW | BATL_CACHEINHIBIT | BATL_GUARDEDSTORAGE)
+#define CFG_DBAT4U CFG_IBAT4U
+
+/* set rest out of range for Linux !!!!!!!!!!! */
+
+/* IBAT5 and DBAT5 */
+#define CFG_IBAT5L (0x20000000 | BATL_PP_RW | BATL_CACHEINHIBIT)
+#define CFG_IBAT5U (0x20000000 | BATU_BL_256M | BATU_VS | BATU_VP)
+#define CFG_DBAT5L (0x20000000 | BATL_PP_RW | BATL_CACHEINHIBIT | BATL_GUARDEDSTORAGE)
+#define CFG_DBAT5U CFG_IBAT5U
+
+/* IBAT6 and DBAT6 */
+#define CFG_IBAT6L (0x20000000 | BATL_PP_RW | BATL_CACHEINHIBIT)
+#define CFG_IBAT6U (0x20000000 | BATU_BL_256M | BATU_VS | BATU_VP)
+#define CFG_DBAT6L (0x20000000 | BATL_PP_RW | BATL_CACHEINHIBIT | BATL_GUARDEDSTORAGE)
+#define CFG_DBAT6U CFG_IBAT6U
+
+/* IBAT7 and DBAT7 */
+#define CFG_IBAT7L (0x20000000 | BATL_PP_RW | BATL_CACHEINHIBIT)
+#define CFG_IBAT7U (0x20000000 | BATU_BL_256M | BATU_VS | BATU_VP)
+#define CFG_DBAT7L (0x20000000 | BATL_PP_RW | BATL_CACHEINHIBIT | BATL_GUARDEDSTORAGE)
+#define CFG_DBAT7U CFG_IBAT7U
+
+/*
+ * 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 */
+#define CFG_VXWORKS_MAC_PTR	0x42010000 /* use some memory in SRAM that's not used!!! */
+
+/*-----------------------------------------------------------------------
+ * Cache Configuration
+ */
+#define CFG_CACHELINE_SIZE	32	/* For all MPC74xx CPUs		 */
+#if (CONFIG_COMMANDS & CFG_CMD_KGDB)
+#define CFG_CACHELINE_SHIFT	5	/* log base 2 of the above value */
+#endif
+
+/*-----------------------------------------------------------------------
+ * L2CR setup -- make sure this is right for your board!
+ * look in include/mpc74xx.h for the defines used here
+ */
+#define CFG_L2
+
+#if defined (CONFIG_750CX) || defined (CONFIG_750FX)
+#define L2_INIT 0
+#else
+#define L2_INIT		(L2CR_L2SIZ_2M | L2CR_L2CLK_3 | L2CR_L2RAM_BURST | \
+			L2CR_L2OH_5 | L2CR_L2CTL | L2CR_L2WT)
+#endif
+
+#define L2_ENABLE	(L2_INIT | L2CR_L2E)
+
+/*
+ * Internal Definitions
+ *
+ * Boot Flags
+ */
+#define BOOTFLAG_COLD	0x01		/* Normal Power-On: Boot from FLASH */
+#define BOOTFLAG_WARM	0x02		/* Software reboot		    */
+
+#endif	/* __CONFIG_H */