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Diffstat (limited to 'u-boot/drivers/mtd/dataflash.c')
-rw-r--r--u-boot/drivers/mtd/dataflash.c463
1 files changed, 463 insertions, 0 deletions
diff --git a/u-boot/drivers/mtd/dataflash.c b/u-boot/drivers/mtd/dataflash.c
new file mode 100644
index 0000000..96cd395
--- /dev/null
+++ b/u-boot/drivers/mtd/dataflash.c
@@ -0,0 +1,463 @@
+/* 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>
+#include <asm/hardware.h>
+#include <dataflash.h>
+
+static AT91S_DataFlash DataFlashInst;
+
+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;
+ int last_part;
+ int found[CONFIG_SYS_MAX_DATAFLASH_BANKS];
+ unsigned char protected;
+
+ AT91F_SpiInit ();
+
+ for (i = 0; i < CONFIG_SYS_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].cs,
+ &dataflash_info[i].Desc);
+
+ switch (dfcode) {
+ case AT45DB021:
+ dataflash_info[i].Device.pages_number = 1024;
+ dataflash_info[i].Device.pages_size = 264;
+ dataflash_info[i].Device.page_offset = 9;
+ dataflash_info[i].Device.byte_mask = 0x300;
+ dataflash_info[i].Device.cs = cs[i].cs;
+ dataflash_info[i].Desc.DataFlash_state = IDLE;
+ dataflash_info[i].logical_address = cs[i].addr;
+ dataflash_info[i].id = dfcode;
+ found[i] += dfcode;;
+ break;
+
+ case AT45DB081:
+ dataflash_info[i].Device.pages_number = 4096;
+ dataflash_info[i].Device.pages_size = 264;
+ dataflash_info[i].Device.page_offset = 9;
+ dataflash_info[i].Device.byte_mask = 0x300;
+ dataflash_info[i].Device.cs = cs[i].cs;
+ dataflash_info[i].Desc.DataFlash_state = IDLE;
+ dataflash_info[i].logical_address = cs[i].addr;
+ dataflash_info[i].id = dfcode;
+ found[i] += dfcode;;
+ break;
+
+ 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].cs;
+ dataflash_info[i].Desc.DataFlash_state = IDLE;
+ dataflash_info[i].logical_address = cs[i].addr;
+ 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].cs;
+ dataflash_info[i].Desc.DataFlash_state = IDLE;
+ dataflash_info[i].logical_address = cs[i].addr;
+ 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].cs;
+ dataflash_info[i].Desc.DataFlash_state = IDLE;
+ dataflash_info[i].logical_address = cs[i].addr;
+ 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].cs;
+ dataflash_info[i].Desc.DataFlash_state = IDLE;
+ dataflash_info[i].logical_address = cs[i].addr;
+ dataflash_info[i].id = dfcode;
+ found[i] += dfcode;;
+ break;
+
+ default:
+ dfcode = 0;
+ break;
+ }
+ /* set the last area end to the dataflash size*/
+ dataflash_info[i].end_address =
+ (dataflash_info[i].Device.pages_number *
+ dataflash_info[i].Device.pages_size) - 1;
+
+ part = 0;
+ 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];
+}
+
+void 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 < CONFIG_SYS_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((char*) s,"%lX",start);
+ setenv((char*) area_list[part].label,(char*) s);
+ }
+ part++;
+ }
+ }
+}
+
+void dataflash_print_info (void)
+{
+ int i, j;
+
+ for (i = 0; i < CONFIG_SYS_MAX_DATAFLASH_BANKS; i++) {
+ if (dataflash_info[i].id != 0) {
+ printf("DataFlash:");
+ switch (dataflash_info[i].id) {
+ case AT45DB021:
+ printf("AT45DB021\n");
+ break;
+ case AT45DB161:
+ printf("AT45DB161\n");
+ break;
+
+ case AT45DB321:
+ printf("AT45DB321\n");
+ break;
+
+ case AT45DB642:
+ printf("AT45DB642\n");
+ break;
+ case AT45DB128:
+ printf("AT45DB128\n");
+ break;
+ }
+
+ printf("Nb pages: %6d\n"
+ "Page Size: %6d\n"
+ "Size=%8d bytes\n"
+ "Logical address: 0x%08X\n",
+ (unsigned int) dataflash_info[i].Device.pages_number,
+ (unsigned int) dataflash_info[i].Device.pages_size,
+ (unsigned int) dataflash_info[i].Device.pages_number *
+ dataflash_info[i].Device.pages_size,
+ (unsigned int) dataflash_info[i].logical_address);
+ for (j = 0; j < NB_DATAFLASH_AREA; j++) {
+ switch(dataflash_info[i].Device.area_list[j].protected) {
+ case FLAG_PROTECT_SET:
+ case FLAG_PROTECT_CLEAR:
+ printf("Area %i:\t%08lX to %08lX %s", j,
+ dataflash_info[i].Device.area_list[j].start,
+ dataflash_info[i].Device.area_list[j].end,
+ (dataflash_info[i].Device.area_list[j].protected==FLAG_PROTECT_SET) ? "(RO)" : " ");
+ printf(" %s\n", dataflash_info[i].Device.area_list[j].label);
+ break;
+ case FLAG_PROTECT_INVALID:
+ break;
+ }
+ }
+ }
+ }
+}
+
+/*---------------------------------------------------------------------------*/
+/* Function Name : AT91F_DataflashSelect */
+/* Object : Select the correct device */
+/*---------------------------------------------------------------------------*/
+AT91PS_DataFlash AT91F_DataflashSelect (AT91PS_DataFlash pFlash,
+ unsigned long *addr)
+{
+ char addr_valid = 0;
+ int i;
+
+ for (i = 0; i < CONFIG_SYS_MAX_DATAFLASH_BANKS; i++)
+ if ( dataflash_info[i].id
+ && ((((int) *addr) & 0xFF000000) ==
+ dataflash_info[i].logical_address)) {
+ addr_valid = 1;
+ break;
+ }
+ if (!addr_valid) {
+ pFlash = (AT91PS_DataFlash) 0;
+ return pFlash;
+ }
+ pFlash->pDataFlashDesc = &(dataflash_info[i].Desc);
+ pFlash->pDevice = &(dataflash_info[i].Device);
+ *addr -= dataflash_info[i].logical_address;
+ return (pFlash);
+}
+
+/*---------------------------------------------------------------------------*/
+/* Function Name : addr_dataflash */
+/* Object : Test if address is valid */
+/*---------------------------------------------------------------------------*/
+int addr_dataflash (unsigned long addr)
+{
+ int addr_valid = 0;
+ int i;
+
+ for (i = 0; i < CONFIG_SYS_MAX_DATAFLASH_BANKS; i++) {
+ if ((((int) addr) & 0xFF000000) ==
+ dataflash_info[i].logical_address) {
+ addr_valid = 1;
+ break;
+ }
+ }
+
+ return addr_valid;
+}
+
+/*---------------------------------------------------------------------------*/
+/* Function Name : size_dataflash */
+/* Object : Test if address is valid regarding the size */
+/*---------------------------------------------------------------------------*/
+int size_dataflash (AT91PS_DataFlash pdataFlash, unsigned long addr,
+ unsigned long size)
+{
+ /* is outside the dataflash */
+ if (((int)addr & 0x0FFFFFFF) > (pdataFlash->pDevice->pages_size *
+ pdataFlash->pDevice->pages_number)) return 0;
+ /* is too large for the dataflash */
+ if (size > ((pdataFlash->pDevice->pages_size *
+ pdataFlash->pDevice->pages_number) -
+ ((int)addr & 0x0FFFFFFF))) return 0;
+
+ return 1;
+}
+
+/*---------------------------------------------------------------------------*/
+/* Function Name : prot_dataflash */
+/* Object : Test if destination area is protected */
+/*---------------------------------------------------------------------------*/
+int prot_dataflash (AT91PS_DataFlash pdataFlash, unsigned long addr)
+{
+ int area;
+
+ /* find area */
+ for (area = 0; area < NB_DATAFLASH_AREA; area++) {
+ if ((addr >= pdataFlash->pDevice->area_list[area].start) &&
+ (addr < pdataFlash->pDevice->area_list[area].end))
+ break;
+ }
+ if (area == NB_DATAFLASH_AREA)
+ return -1;
+
+ /*test protection value*/
+ if (pdataFlash->pDevice->area_list[area].protected == FLAG_PROTECT_SET)
+ return 0;
+ if (pdataFlash->pDevice->area_list[area].protected == FLAG_PROTECT_INVALID)
+ return 0;
+
+ return 1;
+}
+
+/*--------------------------------------------------------------------------*/
+/* Function Name : dataflash_real_protect */
+/* Object : protect/unprotect area */
+/*--------------------------------------------------------------------------*/
+int dataflash_real_protect (int flag, unsigned long start_addr,
+ unsigned long end_addr)
+{
+ int i,j, area1, area2, addr_valid = 0;
+
+ /* find dataflash */
+ for (i = 0; i < CONFIG_SYS_MAX_DATAFLASH_BANKS; i++) {
+ if ((((int) start_addr) & 0xF0000000) ==
+ dataflash_info[i].logical_address) {
+ addr_valid = 1;
+ break;
+ }
+ }
+ if (!addr_valid) {
+ return -1;
+ }
+ /* find start area */
+ for (area1 = 0; area1 < NB_DATAFLASH_AREA; area1++) {
+ if (start_addr == dataflash_info[i].Device.area_list[area1].start)
+ break;
+ }
+ if (area1 == NB_DATAFLASH_AREA) return -1;
+ /* find end area */
+ for (area2 = 0; area2 < NB_DATAFLASH_AREA; area2++) {
+ if (end_addr == dataflash_info[i].Device.area_list[area2].end)
+ break;
+ }
+ if (area2 == NB_DATAFLASH_AREA)
+ return -1;
+
+ /*set protection value*/
+ for(j = area1; j < area2 + 1 ; j++)
+ if(dataflash_info[i].Device.area_list[j].protected
+ != FLAG_PROTECT_INVALID) {
+ if (flag == 0) {
+ dataflash_info[i].Device.area_list[j].protected
+ = FLAG_PROTECT_CLEAR;
+ } else {
+ dataflash_info[i].Device.area_list[j].protected
+ = FLAG_PROTECT_SET;
+ }
+ }
+
+ return (area2 - area1 + 1);
+}
+
+/*---------------------------------------------------------------------------*/
+/* Function Name : read_dataflash */
+/* Object : dataflash memory read */
+/*---------------------------------------------------------------------------*/
+int read_dataflash (unsigned long addr, unsigned long size, char *result)
+{
+ unsigned long AddrToRead = addr;
+ AT91PS_DataFlash pFlash = &DataFlashInst;
+
+ pFlash = AT91F_DataflashSelect (pFlash, &AddrToRead);
+
+ if (pFlash == 0)
+ return ERR_UNKNOWN_FLASH_TYPE;
+
+ if (size_dataflash(pFlash,addr,size) == 0)
+ return ERR_INVAL;
+
+ return (AT91F_DataFlashRead (pFlash, AddrToRead, size, result));
+}
+
+/*---------------------------------------------------------------------------*/
+/* Function Name : write_dataflash */
+/* Object : write a block in dataflash */
+/*---------------------------------------------------------------------------*/
+int write_dataflash (unsigned long addr_dest, unsigned long addr_src,
+ unsigned long size)
+{
+ unsigned long AddrToWrite = addr_dest;
+ AT91PS_DataFlash pFlash = &DataFlashInst;
+
+ pFlash = AT91F_DataflashSelect (pFlash, &AddrToWrite);
+
+ if (pFlash == 0)
+ return ERR_UNKNOWN_FLASH_TYPE;
+
+ if (size_dataflash(pFlash,addr_dest,size) == 0)
+ return ERR_INVAL;
+
+ if (prot_dataflash(pFlash,addr_dest) == 0)
+ return ERR_PROTECTED;
+
+ if (AddrToWrite == -1)
+ return -1;
+
+ return AT91F_DataFlashWrite (pFlash, (uchar *)addr_src,
+ AddrToWrite, size);
+}
+
+void dataflash_perror (int err)
+{
+ switch (err) {
+ case ERR_OK:
+ break;
+ case ERR_TIMOUT:
+ printf("Timeout writing to DataFlash\n");
+ break;
+ case ERR_PROTECTED:
+ printf("Can't write to protected/invalid DataFlash sectors\n");
+ break;
+ case ERR_INVAL:
+ printf("Outside available DataFlash\n");
+ break;
+ case ERR_UNKNOWN_FLASH_TYPE:
+ printf("Unknown Type of DataFlash\n");
+ break;
+ case ERR_PROG_ERROR:
+ printf("General DataFlash Programming Error\n");
+ break;
+ default:
+ printf("%s[%d] FIXME: rc=%d\n", __FILE__, __LINE__, err);
+ break;
+ }
+}
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