mpc837xemds.h

uboot详细解读可用启动引导LINUX2.6内核

/*
 * Copyright (C) 2007 Freescale Semiconductor, Inc.
 * Dave Liu <[e-mail]>
 *
 * 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
 */

#ifndef __CONFIG_H
#define __CONFIG_H

/*
 * High Level Configuration Options
 */
#define CONFIG_E300		1 /* E300 family */
#define CONFIG_MPC83XX		1 /* MPC83XX family */
#define CONFIG_MPC837X		1 /* MPC837X CPU specific */
#define CONFIG_MPC837XEMDS	1 /* MPC837XEMDS board specific */

/*
 * System Clock Setup
 */
#ifdef CONFIG_PCISLAVE
#define CONFIG_83XX_PCICLK	66000000 /* in HZ */
#else
#define CONFIG_83XX_CLKIN	66000000 /* in Hz */
#endif

#ifndef CONFIG_SYS_CLK_FREQ
#define CONFIG_SYS_CLK_FREQ	66000000
#endif

/*
 * Hardware Reset Configuration Word
 * if CLKIN is 66MHz, then
 * CSB = 396MHz, CORE = 594MHz, DDRC = 396MHz, LBC = 396MHz
 */
#define CFG_HRCW_LOW (\
	HRCWL_LCL_BUS_TO_SCB_CLK_1X1 |\
	HRCWL_DDR_TO_SCB_CLK_1X1 |\
	HRCWL_SVCOD_DIV_2 |\
	HRCWL_CSB_TO_CLKIN_6X1 |\
	HRCWL_CORE_TO_CSB_1_5X1)

#ifdef CONFIG_PCISLAVE
#define CFG_HRCW_HIGH (\
	HRCWH_PCI_AGENT |\
	HRCWH_PCI1_ARBITER_DISABLE |\
	HRCWH_CORE_ENABLE |\
	HRCWH_FROM_0XFFF00100 |\
	HRCWH_BOOTSEQ_DISABLE |\
	HRCWH_SW_WATCHDOG_DISABLE |\
	HRCWH_ROM_LOC_LOCAL_16BIT |\
	HRCWH_RL_EXT_LEGACY |\
	HRCWH_TSEC1M_IN_RGMII |\
	HRCWH_TSEC2M_IN_RGMII |\
	HRCWH_BIG_ENDIAN |\
	HRCWH_LDP_CLEAR)
#else
#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_RL_EXT_LEGACY |\
	HRCWH_TSEC1M_IN_RGMII |\
	HRCWH_TSEC2M_IN_RGMII |\
	HRCWH_BIG_ENDIAN |\
	HRCWH_LDP_CLEAR)
#endif

/* Arbiter Configuration Register */
#define CFG_ACR_PIPE_DEP	3	/* Arbiter pipeline depth is 4 */
#define CFG_ACR_RPTCNT		3	/* Arbiter repeat count is 4 */

/* System Priority Control Register */
#define CFG_SPCR_TSECEP		3	/* eTSEC1/2 emergency has highest priority */

/*
 * IP blocks clock configuration
 */
#define CFG_SCCR_TSEC1CM	1	/* CSB:eTSEC1 = 1:1 */
#define CFG_SCCR_TSEC2CM	1	/* CSB:eTSEC2 = 1:1 */
#define CFG_SCCR_SATACM		SCCR_SATACM_2	/* CSB:SATA[0:3] = 2:1 */

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

/*
 * Output Buffer Impedance
 */
#define CFG_OBIR		0x31100000

#define CONFIG_BOARD_EARLY_INIT_F /* call board_pre_init */
#define CONFIG_BOARD_EARLY_INIT_R

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

/*
 * 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_DDR_SDRAM_CLK_CNTL	DDR_SDRAM_CLK_CNTL_CLK_ADJUST_05
#define CFG_83XX_DDR_USES_CS0
#define CFG_DDRCDR_VALUE	0x80080001 /* ODT 150ohm on SoC */

#undef CONFIG_DDR_ECC		/* support DDR ECC function */
#undef CONFIG_DDR_ECC_CMD	/* Use DDR ECC user commands */

#define CONFIG_SPD_EEPROM	/* Use SPD EEPROM for DDR setup */
#define CONFIG_NEVER_ASSERT_ODT_TO_CPU /* Never assert ODT to internal IOs */

#if defined(CONFIG_SPD_EEPROM)
#define SPD_EEPROM_ADDRESS	0x51 /* I2C address of DDR SODIMM SPD */
#else
/*
 * Manually set up DDR parameters
 * WHITE ELECTRONIC DESIGNS - W3HG64M72EEU403PD4 SO-DIMM
 * consist of nine chips from SAMSUNG K4T51083QE-ZC(L)D5
 */
#define CFG_DDR_SIZE		512 /* MB */
#define CFG_DDR_CS0_BNDS	0x0000001f
#define CFG_DDR_CS0_CONFIG	( CSCONFIG_EN \
				| 0x00010000  /* ODT_WR to CSn */ \
				| CSCONFIG_ROW_BIT_14 | CSCONFIG_COL_BIT_10 )
				/* 0x80010202 */
#define CFG_DDR_TIMING_3	0x00000000
#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 ) \
				| ( 6 << 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 ) )
				/* 0x00620802 */
#define CFG_DDR_TIMING_1	( ( 3 << TIMING_CFG1_PRETOACT_SHIFT ) \
				| ( 9 << TIMING_CFG1_ACTTOPRE_SHIFT ) \
				| ( 3 << TIMING_CFG1_ACTTORW_SHIFT ) \
				| ( 5 << TIMING_CFG1_CASLAT_SHIFT ) \
				| (13 << TIMING_CFG1_REFREC_SHIFT ) \
				| ( 3 << TIMING_CFG1_WRREC_SHIFT ) \
				| ( 2 << TIMING_CFG1_ACTTOACT_SHIFT ) \
				| ( 2 << TIMING_CFG1_WRTORD_SHIFT ) )
				/* 0x3935d322 */
#define CFG_DDR_TIMING_2	( ( 1 << TIMING_CFG2_ADD_LAT_SHIFT ) \
				| ( 6 << TIMING_CFG2_CPO_SHIFT ) \
				| ( 2 << TIMING_CFG2_WR_LAT_DELAY_SHIFT ) \
				| ( 4 << TIMING_CFG2_RD_TO_PRE_SHIFT ) \
				| ( 2 << TIMING_CFG2_WR_DATA_DELAY_SHIFT ) \
				| ( 3 << TIMING_CFG2_CKE_PLS_SHIFT ) \
				| ( 8 << TIMING_CFG2_FOUR_ACT_SHIFT) )
				/* 0x131088c8 */
#define CFG_DDR_INTERVAL	( ( 0x03E0 << SDRAM_INTERVAL_REFINT_SHIFT ) \
				| ( 0x0100 << SDRAM_INTERVAL_BSTOPRE_SHIFT ) )
				/* 0x03E00100 */
#define CFG_DDR_SDRAM_CFG	0x43000000
#define CFG_DDR_SDRAM_CFG2	0x00001000 /* 1 posted refresh */
#define CFG_DDR_MODE		( ( 0x0448 << SDRAM_MODE_ESD_SHIFT ) \
				| ( 0x1432 << SDRAM_MODE_SD_SHIFT ) )
				/* ODT 150ohm CL=3, AL=1 on SDRAM */
#define CFG_DDR_MODE2		0x00000000
#endif

/*
 * Memory test
 */
#undef CFG_DRAM_TEST		/* memory test, takes time */
#define CFG_MEMTEST_START	0x00040000 /* memtest region */
#define CFG_MEMTEST_END		0x00140000

/*
 * 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		(512 * 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_8)
#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		32 /* max FLASH size is 32M */

#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		( (~(CFG_FLASH_SIZE - 1) << 20) \
				| OR_UPM_XAM \
				| OR_GPCM_CSNT \
				| OR_GPCM_ACS_DIV2 \
				| OR_GPCM_XACS \
				| OR_GPCM_SCY_15 \
				| OR_GPCM_TRLX \
				| OR_GPCM_EHTR \
				| OR_GPCM_EAD )
				/* 0xFE000FF7 */

#define CFG_MAX_FLASH_BANKS	1 /* number of banks */
#define CFG_MAX_FLASH_SECT	256 /* max sectors per device */

#undef CFG_FLASH_CHECKSUM
#define CFG_FLASH_ERASE_TOUT	60000 /* Flash Erase Timeout (ms) */
#define CFG_FLASH_WRITE_TOUT	500 /* Flash Write Timeout (ms) */

/*
 * BCSR on the Local Bus
 */
#define CFG_BCSR		0xF8000000
#define CFG_LBLAWBAR1_PRELIM	CFG_BCSR /* Access window base at BCSR base */
#define CFG_LBLAWAR1_PRELIM	0x8000000E /* Access window size 32K */

#define CFG_BR1_PRELIM		(CFG_BCSR | 0x00000801) /* Port size=8bit, MSEL=GPCM */
#define CFG_OR1_PRELIM		0xFFFFE9f7 /* length 32K */

/*
 * NAND Flash on the Local Bus
 */
#define CFG_NAND_BASE		0xE0600000	/* 0xE0600000 */
#define CFG_BR3_PRELIM		( CFG_NAND_BASE \
				| (2<<BR_DECC_SHIFT)	/* Use HW ECC */ \
				| BR_PS_8		/* Port Size = 8 bit */ \
				| BR_MS_FCM		/* MSEL = FCM */ \
				| BR_V )		/* valid */
#define CFG_OR3_PRELIM		( 0xFFFF8000		/* length 32K */ \
				| OR_FCM_CSCT \
				| OR_FCM_CST \
				| OR_FCM_CHT \
				| OR_FCM_SCY_1 \
				| OR_FCM_TRLX \
				| OR_FCM_EHTR )
				/* 0xFFFF8396 */

#define CFG_LBLAWBAR3_PRELIM	CFG_NAND_BASE
#define CFG_LBLAWAR3_PRELIM	0x8000000E	/* 32KB  */

/*
 * 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, 57600, 115200}

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

/* 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
#define CONFIG_OF_BOARD_SETUP	1
#define CONFIG_OF_STDOUT_VIA_ALIAS	1

/* I2C */
#define CONFIG_HARD_I2C		/* I2C with hardware support */
#undef CONFIG_SOFT_I2C		/* I2C bit-banged */