* Patch by Nicolas Lacressonniere, 11 Jun 2003:

  Modifications for Atmel AT91RM9200DK ARM920T based development kit
  - Add Atmel DataFlash support for reading and writing.
  - Add possibility to boot a Linux from DataFlash with BOOTM command.
  - Add Flash detection on Atmel AT91RM9200DK
    (between Atmel AT49BV1614 and AT49BV1614A flashes)
  - Replace old Ethernet PHY layer functions
  - Change link address

* Patch by Frank Smith, 9 Jun 2003:
  use CRIT_EXCEPTION for machine check on 4xx

* Patch by Detlev Zundel, 13 Jun 2003:
  added implementation of the "carinfo" command in cmd_immap.c

1 files changed, 71 insertions, 1 deletions

diff --git a/common/cmd_mem.c b/common/cmd_mem.c
index bbfe958482..aca69260ac 100644
--- a/common/cmd_mem.c
+++ b/common/cmd_mem.c
@@ -33,6 +33,9 @@
 #if (CONFIG_COMMANDS & CFG_CMD_MMC)
 #include <mmc.h>
 #endif
+#ifdef CONFIG_HAS_DATAFLASH
+#include <dataflash.h>
+#endif
 
 #if (CONFIG_COMMANDS & (CFG_CMD_MEMORY | CFG_CMD_PCI | CFG_CMD_I2C\
 			| CMD_CMD_PORTIO))
@@ -131,6 +134,23 @@ int do_mem_md ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 
 		printf("%08lx:", addr);
 		linebytes = (nbytes>DISP_LINE_LEN)?DISP_LINE_LEN:nbytes;
+
+#ifdef CONFIG_HAS_DATAFLASH
+		if (read_dataflash(addr, (linebytes/size)*size, linebuf) != -1){
+
+			for (i=0; i<linebytes; i+= size) {
+				if (size == 4) {
+					printf(" %08x", *uip++);
+				} else if (size == 2) {
+					printf(" %04x", *usp++);
+				} else {
+					printf(" %02x", *ucp++);
+				}
+				addr += size;
+			}
+			
+		} else {	/* addr does not correspond to DataFlash */
+#endif
 		for (i=0; i<linebytes; i+= size) {
 			if (size == 4) {
 				printf(" %08x", (*uip++ = *((uint *)addr)));
@@ -141,6 +161,9 @@ int do_mem_md ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 			}
 			addr += size;
 		}
+#ifdef CONFIG_HAS_DATAFLASH
+		}
+#endif
 		printf("    ");
 		cp = linebuf;
 		for (i=0; i<linebytes; i++) {
@@ -236,6 +259,13 @@ int do_mem_cmp (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 
 	count = simple_strtoul(argv[3], NULL, 16);
 
+#ifdef CONFIG_HAS_DATAFLASH
+	if (addr_dataflash(addr1) | addr_dataflash(addr2)){
+		printf("Comparison with DataFlash space not supported.\n\r");
+		return 0;
+	}
+#endif
+
 	ngood = 0;
 
 	while (count-- > 0) {
@@ -311,7 +341,11 @@ int do_mem_cp ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 
 #ifndef CFG_NO_FLASH
 	/* check if we are copying to Flash */
-	if (addr2info(dest) != NULL) {
+	if ( (addr2info(dest) != NULL)
+#ifdef CONFIG_HAS_DATAFLASH
+	   && (!addr_dataflash(addr))
+#endif
+	   ) {
 		int rc;
 
 		printf ("Copy to Flash... ");
@@ -366,6 +400,35 @@ int do_mem_cp ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 	}
 #endif
 
+#ifdef CONFIG_HAS_DATAFLASH
+	/* Check if we are copying from RAM or Flash to DataFlash */
+	if (addr_dataflash(dest) && !addr_dataflash(addr)){
+		int rc;
+
+		printf ("Copy to DataFlash... ");
+
+		rc = write_dataflash (dest, addr, count*size);
+
+		if (rc != 1) {
+			dataflash_perror (rc);
+			return (1);
+		}
+		puts ("done\n");
+		return 0;
+	}
+	
+	/* Check if we are copying from DataFlash to RAM */
+	if (addr_dataflash(addr) && !addr_dataflash(dest) && (addr2info(dest)==NULL) ){
+		read_dataflash(addr, count * size, (char *) dest);
+		return 0;
+	}
+
+	if (addr_dataflash(addr) && addr_dataflash(dest)){
+		printf("Unsupported combination of source/destination.\n\r");
+		return 1;
+	}
+#endif
+
 	while (count-- > 0) {
 		if (size == 4)
 			*((ulong  *)dest) = *((ulong  *)addr);
@@ -805,6 +868,13 @@ mod_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char *argv[])
 		addr += base_address;
 	}
 
+#ifdef CONFIG_HAS_DATAFLASH
+	if (addr_dataflash(addr)){
+		printf("Can't modify DataFlash in place. Use cp instead.\n\r");
+		return 0;
+	}
+#endif
+
 	/* Print the address, followed by value.  Then accept input for
 	 * the next value.  A non-converted value exits.
 	 */