mpc8323erdb.h

uboot详细解读可用启动引导LINUX2.6内核

/*
 * Copyright (C) 2007 Freescale Semiconductor, Inc.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation.
 */

#ifndef __CONFIG_H
#define __CONFIG_H

/*
 * High Level Configuration Options
 */
#define CONFIG_E300		1	/* E300 family */
#define CONFIG_QE		1	/* Has QE */
#define CONFIG_MPC83XX		1	/* MPC83xx family */
#define CONFIG_MPC832X		1	/* MPC832x CPU specific */

#define CONFIG_PCI		1
#define CONFIG_83XX_GENERIC_PCI	1

/*
 * System Clock Setup
 */
#define CONFIG_83XX_CLKIN	66666667	/* in Hz */

#ifndef CONFIG_SYS_CLK_FREQ
#define CONFIG_SYS_CLK_FREQ	CONFIG_83XX_CLKIN
#endif

/*
 * Hardware Reset Configuration Word
 */
#define CFG_HRCW_LOW (\
	HRCWL_LCL_BUS_TO_SCB_CLK_1X1 |\
	HRCWL_DDR_TO_SCB_CLK_2X1 |\
	HRCWL_VCO_1X2 |\
	HRCWL_CSB_TO_CLKIN_2X1 |\
	HRCWL_CORE_TO_CSB_2_5X1 |\
	HRCWL_CE_PLL_VCO_DIV_2 |\
	HRCWL_CE_PLL_DIV_1X1 |\
	HRCWL_CE_TO_PLL_1X3)

#define CFG_HRCW_HIGH (\
	HRCWH_PCI_HOST |\
	HRCWH_PCI1_ARBITER_ENABLE |\
	HRCWH_CORE_ENABLE |\
	HRCWH_FROM_0X00000100 |\
	HRCWH_BOOTSEQ_DISABLE |\
	HRCWH_SW_WATCHDOG_DISABLE |\
	HRCWH_ROM_LOC_LOCAL_16BIT |\
	HRCWH_BIG_ENDIAN |\
	HRCWH_LALE_NORMAL)

/*
 * System IO Config
 */
#define CFG_SICRL		0x00000000

#define CONFIG_BOARD_EARLY_INIT_F	/* call board_pre_init */

/*
 * IMMR new address
 */
#define CFG_IMMR		0xE0000000

/*
 * System performance
 */
#define CFG_ACR_PIPE_DEP	3	/* Arbiter pipeline depth (0-3) */
#define CFG_ACR_RPTCNT		3	/* Arbiter repeat count (0-7) */
#define CFG_SPCR_OPT		1	/* (0-1) Optimize transactions between  CSB and the SEC and QUICC Engine block */

/*
 * DDR Setup
 */
#define CFG_DDR_BASE		0x00000000	/* DDR is system memory */
#define CFG_SDRAM_BASE		CFG_DDR_BASE
#define CFG_DDR_SDRAM_BASE	CFG_DDR_BASE
#define CFG_DDRCDR		0x73000002	/* DDR II voltage is 1.8V */

#undef CONFIG_SPD_EEPROM
#if defined(CONFIG_SPD_EEPROM)
/* Determine DDR configuration from I2C interface
 */
#define SPD_EEPROM_ADDRESS	0x51	/* DDR SODIMM */
#else
/* Manually set up DDR parameters
 */
#define CFG_DDR_SIZE		64	/* MB */
#define CFG_DDR_CS0_CONFIG	( CSCONFIG_EN \
				| CSCONFIG_ODT_WR_ACS \
				| CSCONFIG_ROW_BIT_13 | CSCONFIG_COL_BIT_9 )
				/* 0x80010101 */
#define CFG_DDR_TIMING_0	( ( 0 << TIMING_CFG0_RWT_SHIFT ) \
				| ( 0 << TIMING_CFG0_WRT_SHIFT ) \
				| ( 0 << TIMING_CFG0_RRT_SHIFT ) \
				| ( 0 << TIMING_CFG0_WWT_SHIFT ) \
				| ( 2 << TIMING_CFG0_ACT_PD_EXIT_SHIFT ) \
				| ( 2 << TIMING_CFG0_PRE_PD_EXIT_SHIFT ) \
				| ( 8 << TIMING_CFG0_ODT_PD_EXIT_SHIFT ) \
				| ( 2 << TIMING_CFG0_MRS_CYC_SHIFT ) )
				/* 0x00220802 */
#define CFG_DDR_TIMING_1	( ( 2 << TIMING_CFG1_PRETOACT_SHIFT ) \
				| ( 6 << TIMING_CFG1_ACTTOPRE_SHIFT ) \
				| ( 2 << TIMING_CFG1_ACTTORW_SHIFT ) \
				| ( 5 << TIMING_CFG1_CASLAT_SHIFT ) \
				| ( 3 << TIMING_CFG1_REFREC_SHIFT ) \
				| ( 2 << TIMING_CFG1_WRREC_SHIFT ) \
				| ( 2 << TIMING_CFG1_ACTTOACT_SHIFT ) \
				| ( 2 << TIMING_CFG1_WRTORD_SHIFT ) )
				/* 0x26253222 */
#define CFG_DDR_TIMING_2	( ( 1 << TIMING_CFG2_ADD_LAT_SHIFT ) \
				| (31 << TIMING_CFG2_CPO_SHIFT ) \
				| ( 2 << TIMING_CFG2_WR_LAT_DELAY_SHIFT ) \
				| ( 2 << TIMING_CFG2_RD_TO_PRE_SHIFT ) \
				| ( 2 << TIMING_CFG2_WR_DATA_DELAY_SHIFT ) \
				| ( 3 << TIMING_CFG2_CKE_PLS_SHIFT ) \
				| ( 7 << TIMING_CFG2_FOUR_ACT_SHIFT) )
				/* 0x1f9048c7 */
#define CFG_DDR_TIMING_3	0x00000000
#define CFG_DDR_CLK_CNTL	DDR_SDRAM_CLK_CNTL_CLK_ADJUST_05
				/* 0x02000000 */
#define CFG_DDR_MODE		( ( 0x4448 << SDRAM_MODE_ESD_SHIFT ) \
				| ( 0x0232 << SDRAM_MODE_SD_SHIFT ) )
				/* 0x44480232 */
#define CFG_DDR_MODE2		0x8000c000
#define CFG_DDR_INTERVAL	( ( 800 << SDRAM_INTERVAL_REFINT_SHIFT ) \
				| ( 100 << SDRAM_INTERVAL_BSTOPRE_SHIFT ) )
				/* 0x03200064 */
#define CFG_DDR_CS0_BNDS	0x00000003
#define CFG_DDR_SDRAM_CFG	( SDRAM_CFG_SREN \
				| SDRAM_CFG_SDRAM_TYPE_DDR2 \
				| SDRAM_CFG_32_BE )
				/* 0x43080000 */
#define CFG_DDR_SDRAM_CFG2	0x00401000
#endif

/*
 * Memory test
 */
#undef CFG_DRAM_TEST		/* memory test, takes time */
#define CFG_MEMTEST_START	0x00030000	/* memtest region */
#define CFG_MEMTEST_END		0x03f00000

/*
 * The reserved memory
 */
#define CFG_MONITOR_BASE	TEXT_BASE	/* start of monitor */

#if (CFG_MONITOR_BASE < CFG_FLASH_BASE)
#define CFG_RAMBOOT
#else
#undef  CFG_RAMBOOT
#endif

/* CFG_MONITOR_LEN must be a multiple of CFG_ENV_SECT_SIZE */
#define CFG_MONITOR_LEN		(256 * 1024)	/* Reserve 256 kB for Mon */
#define CFG_MALLOC_LEN		(128 * 1024)	/* Reserved for malloc */

/*
 * Initial RAM Base Address Setup
 */
#define CFG_INIT_RAM_LOCK	1
#define CFG_INIT_RAM_ADDR	0xE6000000	/* Initial RAM address */
#define CFG_INIT_RAM_END	0x1000		/* End of used area in RAM */
#define CFG_GBL_DATA_SIZE	0x100		/* num bytes initial data */
#define CFG_GBL_DATA_OFFSET	(CFG_INIT_RAM_END - CFG_GBL_DATA_SIZE)

/*
 * Local Bus Configuration & Clock Setup
 */
#define CFG_LCRR		(LCRR_DBYP | LCRR_CLKDIV_2)
#define CFG_LBC_LBCR		0x00000000

/*
 * FLASH on the Local Bus
 */
#define CFG_FLASH_CFI		/* use the Common Flash Interface */
#define CFG_FLASH_CFI_DRIVER	/* use the CFI driver */
#define CFG_FLASH_BASE		0xFE000000	/* FLASH base address */
#define CFG_FLASH_SIZE		16	/* FLASH size is 16M */

#define CFG_LBLAWBAR0_PRELIM	CFG_FLASH_BASE	/* Window base at flash base */
#define CFG_LBLAWAR0_PRELIM	0x80000018	/* 32MB window size */

#define CFG_BR0_PRELIM	(CFG_FLASH_BASE |	/* Flash Base address */ \
			(2 << BR_PS_SHIFT) |	/* 16 bit port size */ \
			BR_V)			/* valid */
#define CFG_OR0_PRELIM		0xfe006ff7	/* 16MB Flash size */

#define CFG_MAX_FLASH_BANKS	1		/* number of banks */
#define CFG_MAX_FLASH_SECT	128		/* sectors per device */

#undef CFG_FLASH_CHECKSUM

/*
 * SDRAM on the Local Bus
 */
#undef CFG_LB_SDRAM		/* The board has not SRDAM on local bus */

#ifdef CFG_LB_SDRAM
#define CFG_LBC_SDRAM_BASE	0xF0000000	/* SDRAM base address */
#define CFG_LBC_SDRAM_SIZE	64		/* LBC SDRAM is 64MB */

#define CFG_LBLAWBAR2_PRELIM	CFG_LBC_SDRAM_BASE
#define CFG_LBLAWAR2_PRELIM	0x80000019	/* 64MB */

/*local bus BR2, OR2 definition for SDRAM if soldered on the EPB board */
/*
 * Base Register 2 and Option Register 2 configure SDRAM.
 * The SDRAM base address, CFG_LBC_SDRAM_BASE, is 0xf0000000.
 *
 * For BR2, need:
 *    Base address of 0xf0000000 = BR[0:16] = 1111 0000 0000 0000 0
 *    port size = 32-bits = BR2[19:20] = 11
 *    no parity checking = BR2[21:22] = 00
 *    SDRAM for MSEL = BR2[24:26] = 011
 *    Valid = BR[31] = 1
 *
 * 0    4    8    12   16   20   24   28
 * 1111 0000 0000 0000 0001 1000 0110 0001 = f0001861
 *
 * CFG_LBC_SDRAM_BASE should be masked and OR'ed into
 * the top 17 bits of BR2.
 */

#define CFG_BR2_PRELIM	0xf0001861	/*Port size=32bit, MSEL=SDRAM */

/*
 * The SDRAM size in MB, CFG_LBC_SDRAM_SIZE, is 64.
 *
 * For OR2, need:
 *    64MB mask for AM, OR2[0:7] = 1111 1100
 *                 XAM, OR2[17:18] = 11
 *    9 columns OR2[19-21] = 010
 *    13 rows   OR2[23-25] = 100
 *    EAD set for extra time OR[31] = 1
 *
 * 0    4    8    12   16   20   24   28
 * 1111 1100 0000 0000 0110 1001 0000 0001 = fc006901
 */

#define CFG_OR2_PRELIM	0xfc006901

#define CFG_LBC_LSRT	0x32000000	/* LB sdram refresh timer, about 6us */
#define CFG_LBC_MRTPR	0x20000000	/* LB refresh timer prescal, 266MHz/32 */

/*
 * LSDMR masks
 */
#define CFG_LBC_LSDMR_OP_NORMAL	(0 << (31 - 4))
#define CFG_LBC_LSDMR_OP_ARFRSH	(1 << (31 - 4))
#define CFG_LBC_LSDMR_OP_SRFRSH	(2 << (31 - 4))
#define CFG_LBC_LSDMR_OP_MRW	(3 << (31 - 4))
#define CFG_LBC_LSDMR_OP_PRECH	(4 << (31 - 4))
#define CFG_LBC_LSDMR_OP_PCHALL	(5 << (31 - 4))
#define CFG_LBC_LSDMR_OP_ACTBNK	(6 << (31 - 4))
#define CFG_LBC_LSDMR_OP_RWINV	(7 << (31 - 4))

#define CFG_LBC_LSDMR_COMMON	0x0063b723

/*
 * SDRAM Controller configuration sequence.
 */
#define CFG_LBC_LSDMR_1		( CFG_LBC_LSDMR_COMMON \
				| CFG_LBC_LSDMR_OP_PCHALL)
#define CFG_LBC_LSDMR_2		( CFG_LBC_LSDMR_COMMON \
				| CFG_LBC_LSDMR_OP_ARFRSH)
#define CFG_LBC_LSDMR_3		( CFG_LBC_LSDMR_COMMON \
				| CFG_LBC_LSDMR_OP_ARFRSH)
#define CFG_LBC_LSDMR_4		( CFG_LBC_LSDMR_COMMON \
				| CFG_LBC_LSDMR_OP_MRW)
#define CFG_LBC_LSDMR_5		( CFG_LBC_LSDMR_COMMON \
				| CFG_LBC_LSDMR_OP_NORMAL)

#endif

/*
 * Windows to access PIB via local bus
 */
#define CFG_LBLAWBAR3_PRELIM	0xf8008000	/* windows base 0xf8008000 */
#define CFG_LBLAWAR3_PRELIM	0x8000000f	/* windows size 64KB */

/*
 * Serial Port
 */
#define CONFIG_CONS_INDEX	1
#undef CONFIG_SERIAL_SOFTWARE_FIFO
#define CFG_NS16550
#define CFG_NS16550_SERIAL
#define CFG_NS16550_REG_SIZE	1
#define CFG_NS16550_CLK		get_bus_freq(0)

#define CFG_BAUDRATE_TABLE  \
	{300, 600, 1200, 2400, 4800, 9600, 19200, 38400,115200}

#define CFG_NS16550_COM1	(CFG_IMMR+0x4500)
#define CFG_NS16550_COM2	(CFG_IMMR+0x4600)

#define CONFIG_CMDLINE_EDITING	1	/* add command line history */
/* Use the HUSH parser */
#define CFG_HUSH_PARSER
#ifdef CFG_HUSH_PARSER
#define CFG_PROMPT_HUSH_PS2 "> "
#endif

/* pass open firmware flat tree */
#define CONFIG_OF_LIBFDT	1