dataflash.c

U-boot源码 ARM7启动代码

/* LowLevel function for ATMEL DataFlash support
 * Author : Hamid Ikdoumi (Atmel)
 *
 * 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
 *
 */
#include <common.h>
#include <config.h>
#ifdef CONFIG_HAS_DATAFLASH
#include <asm/hardware.h>
#include <dataflash.h>

AT91S_DATAFLASH_INFO dataflash_info[CFG_MAX_DATAFLASH_BANKS];
static AT91S_DataFlash DataFlashInst;

#ifdef CONFIG_AT91SAM9260EK
int cs[][CFG_MAX_DATAFLASH_BANKS] = {
	{CFG_DATAFLASH_LOGIC_ADDR_CS0, 0},	/* Logical adress, CS */
	{CFG_DATAFLASH_LOGIC_ADDR_CS1, 1}
};
#elif defined(CONFIG_AT91SAM9263EK)
int cs[][CFG_MAX_DATAFLASH_BANKS] = {
	{CFG_DATAFLASH_LOGIC_ADDR_CS0, 0}	/* Logical adress, CS */
};
#else
int cs[][CFG_MAX_DATAFLASH_BANKS] = {
	{CFG_DATAFLASH_LOGIC_ADDR_CS0, 0},	/* Logical adress, CS */
	{CFG_DATAFLASH_LOGIC_ADDR_CS3, 3}
};
#endif

/*define the area offsets*/
#if defined(CONFIG_AT91SAM9261EK) || defined(CONFIG_AT91SAM9260EK) || defined(CONFIG_AT91SAM9263EK)
#if	defined(CONFIG_NEW_PARTITION)
dataflash_protect_t area_list[NB_DATAFLASH_AREA] = {
	{0x00000000,	0x00003FFF, 	FLAG_PROTECT_SET,	0,    		"Bootstrap"},  	/* ROM code */
	{0x00004200,	0x000083FF, 	FLAG_PROTECT_CLEAR,	0,    		"Environment"},	/* u-boot environment */
	{0x00008400,	0x0003DDFF,	FLAG_PROTECT_SET,	0,    		"U-Boot"},     	/* u-boot code */
	{0x0003DE00,	0x00041FFF,	FLAG_PROTECT_CLEAR,	FLAG_SETENV,	"MON"},	       	/* Room for alternative boot monitor */
	{0x00042000,	0x0018BFFF,	FLAG_PROTECT_CLEAR,	FLAG_SETENV,	"OS"},	       	/* data area size to tune */
	{0x0018C000,	0xFFFFFFFF,	FLAG_PROTECT_CLEAR,	FLAG_SETENV,	"FS"},	       	/* data area size to tune */
};
#else
dataflash_protect_t area_list[NB_DATAFLASH_AREA] = {
	{0, 0x3fff, FLAG_PROTECT_SET},			/* ROM code */
	{0x4000, 0x7fff, FLAG_PROTECT_CLEAR},		/* u-boot environment */
	{0x8000, 0x37fff, FLAG_PROTECT_SET},		/* u-boot code */
	{0x38000, 0x1fffff, FLAG_PROTECT_CLEAR},	/* data area size to tune */
};
#endif
#elif defined(CONFIG_NEW_PARTITION)
/*define the area offsets*/
/* Invalid partitions should be defined with start > end */
dataflash_protect_t area_list[NB_DATAFLASH_AREA*CFG_MAX_DATAFLASH_BANKS] = {
	{0x00000000, 0x000083ff, FLAG_PROTECT_SET,	0,		"Bootstrap"},	/* ROM code */
	{0x00008400, 0x00020fff, FLAG_PROTECT_SET,	0,		"U-Boot"},	/* u-boot code */
	{0x00021000, 0x000293ff, FLAG_PROTECT_CLEAR,	0,		"Environment"},	/* u-boot environment 8Kb */
	{0x00029400, 0x00041fff, FLAG_PROTECT_INVALID,	0,		"<Unused>"},	/* Rest of Sector 1 */
	{0x00042000, 0x0018Bfff, FLAG_PROTECT_CLEAR,	FLAG_SETENV,	"OS"},	/* data area size to tune */
	{0x0018C000, 0xffffffff, FLAG_PROTECT_CLEAR,	FLAG_SETENV,	"FS"},	/* data area size to tune */

	{0x00000000, 0xffffffff, FLAG_PROTECT_CLEAR,	FLAG_SETENV,	"Data"},	/* data area */
	{0xffffffff, 0x00000000, FLAG_PROTECT_INVALID,	0,		"<Invalid>"},	/* Invalid */
	{0xffffffff, 0x00000000, FLAG_PROTECT_INVALID,	0,		"<Invalid>"},	/* Invalid */
	{0xffffffff, 0x00000000, FLAG_PROTECT_INVALID,	0,		"<Invalid>"},	/* Invalid */
	{0xffffffff, 0x00000000, FLAG_PROTECT_INVALID,	0,		"<Invalid>"},	/* Invalid */
	{0xffffffff, 0x00000000, FLAG_PROTECT_INVALID,	0,		"<Invalid>"},	/* Invalid */
};
#else
dataflash_protect_t area_list[NB_DATAFLASH_AREA] = {
	{0, 0x7fff, FLAG_PROTECT_SET},			/* ROM code */
	{0x8000, 0x1ffff, FLAG_PROTECT_SET},		/* u-boot code */
	{0x20000, 0x27fff, FLAG_PROTECT_CLEAR},		/* u-boot environment */
	{0x28000, 0x1fffff, FLAG_PROTECT_CLEAR},	/* data area size to tune */
};
#endif

extern void AT91F_SpiInit (void);
extern int AT91F_DataflashProbe (int i, AT91PS_DataflashDesc pDesc);
extern int AT91F_DataFlashRead (AT91PS_DataFlash pDataFlash,
				unsigned long addr,
				unsigned long size, char *buffer);
extern int AT91F_DataFlashWrite( AT91PS_DataFlash pDataFlash,
				unsigned char *src,
				int dest,
				int size );

int AT91F_DataflashInit (void)
{
	int i, j;
	int dfcode;
	int part = 0;
	int last_part;
	int found[CFG_MAX_DATAFLASH_BANKS];
	unsigned char protected;

	AT91F_SpiInit ();

	for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
		found[i] = 0;
		dataflash_info[i].Desc.state = IDLE;
		dataflash_info[i].id = 0;
		dataflash_info[i].Device.pages_number = 0;
		dfcode = AT91F_DataflashProbe (cs[i][1],
				&dataflash_info[i].Desc);

		switch (dfcode) {
		case AT45DB161:
			dataflash_info[i].Device.pages_number = 4096;
			dataflash_info[i].Device.pages_size = 528;
			dataflash_info[i].Device.page_offset = 10;
			dataflash_info[i].Device.byte_mask = 0x300;
			dataflash_info[i].Device.cs = cs[i][1];
			dataflash_info[i].Desc.DataFlash_state = IDLE;
			dataflash_info[i].logical_address = cs[i][0];
			dataflash_info[i].id = dfcode;
			found[i] += dfcode;;
			break;

		case AT45DB321:
			dataflash_info[i].Device.pages_number = 8192;
			dataflash_info[i].Device.pages_size = 528;
			dataflash_info[i].Device.page_offset = 10;
			dataflash_info[i].Device.byte_mask = 0x300;
			dataflash_info[i].Device.cs = cs[i][1];
			dataflash_info[i].Desc.DataFlash_state = IDLE;
			dataflash_info[i].logical_address = cs[i][0];
			dataflash_info[i].id = dfcode;
			found[i] += dfcode;;
			break;

		case AT45DB642:
			dataflash_info[i].Device.pages_number = 8192;
			dataflash_info[i].Device.pages_size = 1056;
			dataflash_info[i].Device.page_offset = 11;
			dataflash_info[i].Device.byte_mask = 0x700;
			dataflash_info[i].Device.cs = cs[i][1];
			dataflash_info[i].Desc.DataFlash_state = IDLE;
			dataflash_info[i].logical_address = cs[i][0];
			dataflash_info[i].id = dfcode;
			found[i] += dfcode;;
			break;

		case AT45DB128:
			dataflash_info[i].Device.pages_number = 16384;
			dataflash_info[i].Device.pages_size = 1056;
			dataflash_info[i].Device.page_offset = 11;
			dataflash_info[i].Device.byte_mask = 0x700;
			dataflash_info[i].Device.cs = cs[i][1];
			dataflash_info[i].Desc.DataFlash_state = IDLE;
			dataflash_info[i].logical_address = cs[i][0];
			dataflash_info[i].id = dfcode;
			found[i] += dfcode;;
			break;

		default:
			dfcode = 0;
			break;
		}
		/* set the last area end to the dataflash size*/
		area_list[NB_DATAFLASH_AREA -1].end =
				(dataflash_info[i].Device.pages_number *
				dataflash_info[i].Device.pages_size)-1;

		last_part=0;
		/* set the area addresses */
		for(j = 0; j<NB_DATAFLASH_AREA; j++) {
			if(found[i]!=0) {
				dataflash_info[i].Device.area_list[j].start =
					area_list[part].start +
					dataflash_info[i].logical_address;
				if(area_list[part].end == 0xffffffff) {
					dataflash_info[i].Device.area_list[j].end =
						dataflash_info[i].end_address +
						dataflash_info	[i].logical_address;
					last_part = 1;
				} else {
					dataflash_info[i].Device.area_list[j].end =
						area_list[part].end +
						dataflash_info[i].logical_address;
				}
				protected = area_list[part].protected;
				/* Set the environment according to the label...*/
				if(protected == FLAG_PROTECT_INVALID) {
					dataflash_info[i].Device.area_list[j].protected =
						FLAG_PROTECT_INVALID;
				} else {
					dataflash_info[i].Device.area_list[j].protected =
						protected;
				}
				strcpy((char*)(dataflash_info[i].Device.area_list[j].label),
						(const char *)area_list[part].label);
			}
			part++;
		}
	}
	return found[0];
}

#ifdef	CONFIG_NEW_DF_PARTITION
int AT91F_DataflashSetEnv (void)
{
	int i, j;
	int part;
	unsigned char env;
	unsigned char s[32];	/* Will fit a long int in hex */
	unsigned long start;
	for (i = 0, part= 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
		for(j = 0; j<NB_DATAFLASH_AREA; j++) {
			env = area_list[part].setenv;
			/* Set the environment according to the label...*/
			if((env & FLAG_SETENV) == FLAG_SETENV) {
				start =
				dataflash_info[i].Device.area_list[j].start;
				sprintf(s,"%X",start);
				setenv(area_list[part].label,s);
			}
			part++;
		}
	}
}
#endif

void dataflash_print_info (void)
{
	int i, j;

	for (i = 0; i < CFG_MAX_DATAFLASH_BANKS; i++) {
		if (dataflash_info[i].id != 0) {
			printf("DataFlash:");
			switch (dataflash_info[i].id) {
			case AT45DB161:
				printf("AT45DB161\n");
				break;

			case AT45DB321:
				printf("AT45DB321\n");
				break;

			case AT45DB642:
				printf("AT45DB642\n");