mem_init.h

UBOOT 源码

/*
 * U-boot - mem_init.h Header file for memory initialization
 *
 * Copyright (c) 2005 blackfin.uclinux.org
 *
 * 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
 */

#if ( CONFIG_MEM_MT48LC16M16A2TG_75  ||  CONFIG_MEM_MT48LC64M4A2FB_7E )
	#if ( CONFIG_SCLK_HZ > 119402985 )
		#define SDRAM_tRP	TRP_2
		#define SDRAM_tRP_num	2
		#define SDRAM_tRAS	TRAS_7
		#define SDRAM_tRAS_num	7
		#define SDRAM_tRCD	TRCD_2
		#define SDRAM_tWR	TWR_2
	#endif
	#if ( CONFIG_SCLK_HZ > 104477612 ) && ( CONFIG_SCLK_HZ <= 119402985 )
		#define SDRAM_tRP	TRP_2
		#define SDRAM_tRP_num	2
		#define SDRAM_tRAS	TRAS_6
		#define SDRAM_tRAS_num	6
		#define SDRAM_tRCD	TRCD_2
		#define SDRAM_tWR	TWR_2
	#endif
	#if ( CONFIG_SCLK_HZ >  89552239 ) && ( CONFIG_SCLK_HZ <= 104477612 )
		#define SDRAM_tRP	TRP_2
		#define SDRAM_tRP_num	2
		#define SDRAM_tRAS	TRAS_5
		#define SDRAM_tRAS_num	5
		#define SDRAM_tRCD	TRCD_2
		#define SDRAM_tWR	TWR_2
	#endif
	#if ( CONFIG_SCLK_HZ >  74626866 ) && ( CONFIG_SCLK_HZ <=  89552239 )
		#define SDRAM_tRP	TRP_2
		#define SDRAM_tRP_num	2
		#define SDRAM_tRAS	TRAS_4
		#define SDRAM_tRAS_num	4
		#define SDRAM_tRCD	TRCD_2
		#define SDRAM_tWR	TWR_2
	#endif
	#if ( CONFIG_SCLK_HZ >  66666667 ) && ( CONFIG_SCLK_HZ <= 74626866 )
		#define SDRAM_tRP	TRP_2
		#define SDRAM_tRP_num	2
		#define SDRAM_tRAS	TRAS_3
		#define SDRAM_tRAS_num	3
		#define SDRAM_tRCD	TRCD_2
		#define SDRAM_tWR	TWR_2
	#endif
	#if ( CONFIG_SCLK_HZ >  59701493 ) && ( CONFIG_SCLK_HZ <= 66666667 )
		#define SDRAM_tRP	TRP_1
		#define SDRAM_tRP_num	1
		#define SDRAM_tRAS	TRAS_4
		#define SDRAM_tRAS_num	3
		#define SDRAM_tRCD	TRCD_1
		#define SDRAM_tWR	TWR_2
	#endif
	#if ( CONFIG_SCLK_HZ >  44776119 ) && ( CONFIG_SCLK_HZ <=  59701493 )
		#define SDRAM_tRP	TRP_1
		#define SDRAM_tRP_num	1
		#define SDRAM_tRAS	TRAS_3
		#define SDRAM_tRAS_num	3
		#define SDRAM_tRCD	TRCD_1
		#define SDRAM_tWR	TWR_2
	#endif
	#if ( CONFIG_SCLK_HZ >  29850746 ) && ( CONFIG_SCLK_HZ <=  44776119 )
		#define SDRAM_tRP	TRP_1
		#define SDRAM_tRP_num	1
		#define SDRAM_tRAS	TRAS_2
		#define SDRAM_tRAS_num	2
		#define SDRAM_tRCD	TRCD_1
		#define SDRAM_tWR	TWR_2
	#endif
	#if ( CONFIG_SCLK_HZ <=  29850746 )
		#define SDRAM_tRP	TRP_1
		#define SDRAM_tRP_num	1
		#define SDRAM_tRAS	TRAS_1
		#define SDRAM_tRAS_num	1
		#define SDRAM_tRCD	TRCD_1
		#define SDRAM_tWR	TWR_2
	#endif
#endif

#if (CONFIG_MEM_MT48LC16M16A2TG_75)
	/*SDRAM INFORMATION: */
	#define SDRAM_Tref	64       /* Refresh period in milliseconds   */
	#define SDRAM_NRA	8192     /* Number of row addresses in SDRAM */
	#define SDRAM_CL	CL_3
#endif

#if (CONFIG_MEM_MT48LC64M4A2FB_7E)
	/*SDRAM INFORMATION: */
	#define SDRAM_Tref	64       /* Refresh period in milliseconds   */
	#define SDRAM_NRA	8192     /* Number of row addresses in SDRAM */
	#define SDRAM_CL	CL_2
#endif

#if ( CONFIG_MEM_SIZE == 128 )
	#define SDRAM_SIZE	EBSZ_128
#endif
#if ( CONFIG_MEM_SIZE == 64 )
	#define SDRAM_SIZE	EBSZ_64
#endif
#if (  CONFIG_MEM_SIZE == 32 )
	#define SDRAM_SIZE	EBSZ_32
#endif
#if ( CONFIG_MEM_SIZE == 16 )
	#define SDRAM_SIZE	EBSZ_16
#endif
#if ( CONFIG_MEM_ADD_WDTH == 11 )
	#define SDRAM_WIDTH	EBCAW_11
#endif
#if ( CONFIG_MEM_ADD_WDTH == 10 )
	#define SDRAM_WIDTH	EBCAW_10
#endif
#if ( CONFIG_MEM_ADD_WDTH == 9 )
	#define SDRAM_WIDTH	EBCAW_9
#endif
#if ( CONFIG_MEM_ADD_WDTH == 8 )
	#define SDRAM_WIDTH	EBCAW_8
#endif

#define mem_SDBCTL	SDRAM_WIDTH | SDRAM_SIZE | EBE

/* Equation from section 17 (p17-46) of BF533 HRM */
#define mem_SDRRC	((( CONFIG_SCLK_HZ / 1000) * SDRAM_Tref)  / SDRAM_NRA) - (SDRAM_tRAS_num + SDRAM_tRP_num)

/* Enable SCLK Out */
#define mem_SDGCTL	( SCTLE | SDRAM_CL | SDRAM_tRAS | SDRAM_tRP | SDRAM_tRCD | SDRAM_tWR | PSS )

#define flash_EBIU_AMBCTL_WAT	( ( CONFIG_FLASH_SPEED_BWAT * 4 )  / ( 4000000000 / CONFIG_SCLK_HZ ) ) + 1
#define flash_EBIU_AMBCTL_RAT	( ( CONFIG_FLASH_SPEED_BRAT * 4 )  / ( 4000000000 / CONFIG_SCLK_HZ ) ) + 1
#define flash_EBIU_AMBCTL_HT	( ( CONFIG_FLASH_SPEED_BHT  * 4 )  / ( 4000000000 / CONFIG_SCLK_HZ ) )
#define flash_EBIU_AMBCTL_ST	( ( CONFIG_FLASH_SPEED_BST  * 4 )  / ( 4000000000 / CONFIG_SCLK_HZ ) ) + 1
#define flash_EBIU_AMBCTL_TT	( ( CONFIG_FLASH_SPEED_BTT  * 4 )  / ( 4000000000 / CONFIG_SCLK_HZ ) ) + 1

#if (flash_EBIU_AMBCTL_TT > 3 )
	#define flash_EBIU_AMBCTL0_TT	B0TT_4
#endif
#if (flash_EBIU_AMBCTL_TT == 3 )
	#define flash_EBIU_AMBCTL0_TT	B0TT_3
#endif
#if (flash_EBIU_AMBCTL_TT == 2 )
	#define flash_EBIU_AMBCTL0_TT	B0TT_2
#endif
#if (flash_EBIU_AMBCTL_TT < 2 )
	#define flash_EBIU_AMBCTL0_TT	B0TT_1
#endif

#if (flash_EBIU_AMBCTL_ST > 3 )
	#define flash_EBIU_AMBCTL0_ST	B0ST_4
#endif
#if (flash_EBIU_AMBCTL_ST == 3 )
	#define flash_EBIU_AMBCTL0_ST	B0ST_3
#endif
#if (flash_EBIU_AMBCTL_ST == 2 )
	#define flash_EBIU_AMBCTL0_ST	B0ST_2
#endif
#if (flash_EBIU_AMBCTL_ST < 2 )
	#define flash_EBIU_AMBCTL0_ST	B0ST_1
#endif

#if (flash_EBIU_AMBCTL_HT > 2 )
	#define flash_EBIU_AMBCTL0_HT	B0HT_3
#endif
#if (flash_EBIU_AMBCTL_HT == 2 )
	#define flash_EBIU_AMBCTL0_HT	B0HT_2
#endif
#if (flash_EBIU_AMBCTL_HT == 1 )
	#define flash_EBIU_AMBCTL0_HT	B0HT_1
#endif
#if (flash_EBIU_AMBCTL_HT == 0  && CONFIG_FLASH_SPEED_BHT == 0)
	#define flash_EBIU_AMBCTL0_HT	B0HT_0
#endif
#if (flash_EBIU_AMBCTL_HT == 0  && CONFIG_FLASH_SPEED_BHT != 0)
	#define flash_EBIU_AMBCTL0_HT	B0HT_1
#endif

#if (flash_EBIU_AMBCTL_WAT > 14)
	#define flash_EBIU_AMBCTL0_WAT	B0WAT_15
#endif
#if (flash_EBIU_AMBCTL_WAT == 14)
	#define flash_EBIU_AMBCTL0_WAT	B0WAT_14
#endif
#if (flash_EBIU_AMBCTL_WAT == 13)
	#define flash_EBIU_AMBCTL0_WAT	B0WAT_13
#endif
#if (flash_EBIU_AMBCTL_WAT == 12)
	#define flash_EBIU_AMBCTL0_WAT	B0WAT_12
#endif
#if (flash_EBIU_AMBCTL_WAT == 11)
	#define flash_EBIU_AMBCTL0_WAT	B0WAT_11
#endif
#if (flash_EBIU_AMBCTL_WAT == 10)
	#define flash_EBIU_AMBCTL0_WAT	B0WAT_10
#endif
#if (flash_EBIU_AMBCTL_WAT == 9)
	#define flash_EBIU_AMBCTL0_WAT	B0WAT_9
#endif
#if (flash_EBIU_AMBCTL_WAT == 8)
	#define flash_EBIU_AMBCTL0_WAT	B0WAT_8
#endif
#if (flash_EBIU_AMBCTL_WAT == 7)
	#define flash_EBIU_AMBCTL0_WAT	B0WAT_7
#endif
#if (flash_EBIU_AMBCTL_WAT == 6)
	#define flash_EBIU_AMBCTL0_WAT	B0WAT_6
#endif
#if (flash_EBIU_AMBCTL_WAT == 5)
	#define flash_EBIU_AMBCTL0_WAT	B0WAT_5
#endif
#if (flash_EBIU_AMBCTL_WAT == 4)
	#define flash_EBIU_AMBCTL0_WAT	B0WAT_4
#endif
#if (flash_EBIU_AMBCTL_WAT == 3)
	#define flash_EBIU_AMBCTL0_WAT	B0WAT_3
#endif
#if (flash_EBIU_AMBCTL_WAT == 2)
	#define flash_EBIU_AMBCTL0_WAT	B0WAT_2
#endif
#if (flash_EBIU_AMBCTL_WAT == 1)
	#define flash_EBIU_AMBCTL0_WAT	B0WAT_1
#endif

#if (flash_EBIU_AMBCTL_RAT > 14)
	#define flash_EBIU_AMBCTL0_RAT	B0RAT_15
#endif
#if (flash_EBIU_AMBCTL_RAT == 14)
	#define flash_EBIU_AMBCTL0_RAT	B0RAT_14
#endif
#if (flash_EBIU_AMBCTL_RAT == 13)
	#define flash_EBIU_AMBCTL0_RAT	B0RAT_13
#endif
#if (flash_EBIU_AMBCTL_RAT == 12)
	#define flash_EBIU_AMBCTL0_RAT	B0RAT_12
#endif
#if (flash_EBIU_AMBCTL_RAT == 11)
	#define flash_EBIU_AMBCTL0_RAT	B0RAT_11
#endif
#if (flash_EBIU_AMBCTL_RAT == 10)
	#define flash_EBIU_AMBCTL0_RAT	B0RAT_10
#endif
#if (flash_EBIU_AMBCTL_RAT == 9)
	#define flash_EBIU_AMBCTL0_RAT	B0RAT_9
#endif
#if (flash_EBIU_AMBCTL_RAT == 8)
	#define flash_EBIU_AMBCTL0_RAT	B0RAT_8
#endif
#if (flash_EBIU_AMBCTL_RAT == 7)
	#define flash_EBIU_AMBCTL0_RAT	B0RAT_7
#endif
#if (flash_EBIU_AMBCTL_RAT == 6)
	#define flash_EBIU_AMBCTL0_RAT	B0RAT_6
#endif
#if (flash_EBIU_AMBCTL_RAT == 5)
	#define flash_EBIU_AMBCTL0_RAT	B0RAT_5
#endif
#if (flash_EBIU_AMBCTL_RAT == 4)
	#define flash_EBIU_AMBCTL0_RAT	B0RAT_4
#endif
#if (flash_EBIU_AMBCTL_RAT == 3)
	#define flash_EBIU_AMBCTL0_RAT	B0RAT_3
#endif
#if (flash_EBIU_AMBCTL_RAT == 2)
	#define flash_EBIU_AMBCTL0_RAT	B0RAT_2
#endif
#if (flash_EBIU_AMBCTL_RAT == 1)
	#define flash_EBIU_AMBCTL0_RAT	B0RAT_1
#endif

#define flash_EBIU_AMBCTL0	flash_EBIU_AMBCTL0_WAT | flash_EBIU_AMBCTL0_RAT | flash_EBIU_AMBCTL0_HT | flash_EBIU_AMBCTL0_ST | flash_EBIU_AMBCTL0_TT | CONFIG_FLASH_SPEED_RDYEN