Fix CFG_NO_FLASH compilation.

Many Atmel boards have no "real" (NOR) flash on board, and rely only
on DataFlash and NAND memories. This patch enables CFG_NO_FLASH to
be present in a board configuration file, while still enabling flash
commands like 'flinfo', 'protect', etc.

Signed-off-by: Stelian Pop <stelian@popies.net>

common/cmd_flash.c

@@ -41,6 +41,7 @@ int find_dev_and_part(const char *id, struct mtd_device **dev,
 		u8 *part_num, struct part_info **part);
 #endif
 
+#ifndef CFG_NO_FLASH
 extern flash_info_t flash_info[];	/* info for FLASH chips */
 
 /*
@@ -275,15 +276,19 @@ flash_fill_sect_ranges (ulong addr_first, ulong addr_last,
 
 	return rcode;
 }
+#endif /* CFG_NO_FLASH */
 
 int do_flinfo ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 {
+#ifndef CFG_NO_FLASH
 	ulong bank;
+#endif
 
 #ifdef CONFIG_HAS_DATAFLASH
 	dataflash_print_info();
 #endif
 
+#ifndef CFG_NO_FLASH
 	if (argc == 1) {	/* print info for all FLASH banks */
 		for (bank=0; bank <CFG_MAX_FLASH_BANKS; ++bank) {
 			printf ("\nBank # %ld: ", bank+1);
@@ -301,11 +306,13 @@ int do_flinfo ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 	}
 	printf ("\nBank # %ld: ", bank);
 	flash_print_info (&flash_info[bank-1]);
+#endif /* CFG_NO_FLASH */
 	return 0;
 }
 
 int do_flerase (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 {
+#ifndef CFG_NO_FLASH
 	flash_info_t *info;
 	ulong bank, addr_first, addr_last;
 	int n, sect_first, sect_last;
@@ -397,8 +404,12 @@ int do_flerase (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 
 	rcode = flash_sect_erase(addr_first, addr_last);
 	return rcode;
+#else
+	return 0;
+#endif /* CFG_NO_FLASH */
 }
 
+#ifndef CFG_NO_FLASH
 int flash_sect_erase (ulong addr_first, ulong addr_last)
 {
 	flash_info_t *info;
@@ -439,12 +450,17 @@ int flash_sect_erase (ulong addr_first, ulong addr_last)
 	}
 	return rcode;
 }
+#endif /* CFG_NO_FLASH */
 
 int do_protect (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 {
+#ifndef CFG_NO_FLASH
 	flash_info_t *info;
-	ulong bank, addr_first, addr_last;
-	int i, p, n, sect_first, sect_last;
+	ulong bank;
+	int i, n, sect_first, sect_last;
+#endif /* CFG_NO_FLASH */
+	ulong addr_first, addr_last;
+	int p;
 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
 	struct mtd_device *dev;
 	struct part_info *part;
@@ -487,6 +503,7 @@ int do_protect (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 	}
 #endif
 
+#ifndef CFG_NO_FLASH
 	if (strcmp(argv[2], "all") == 0) {
 		for (bank=1; bank<=CFG_MAX_FLASH_BANKS; ++bank) {
 			info = &flash_info[bank-1];
@@ -611,10 +628,11 @@ int do_protect (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 		return 1;
 	}
 	rcode = flash_sect_protect (p, addr_first, addr_last);
+#endif /* CFG_NO_FLASH */
 	return rcode;
 }
 
-
+#ifndef CFG_NO_FLASH
 int flash_sect_protect (int p, ulong addr_first, ulong addr_last)
 {
 	flash_info_t *info;
@@ -667,6 +685,7 @@ int flash_sect_protect (int p, ulong addr_first, ulong addr_last)
 	}
 	return rcode;
 }
+#endif /* CFG_NO_FLASH */
 
 
 /**************************************************/

common/cmd_mem.c

@@ -492,7 +492,11 @@ int do_mem_cp ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 	}
 
 	/* Check if we are copying from DataFlash to RAM */
-	if (addr_dataflash(addr) && !addr_dataflash(dest) && (addr2info(dest)==NULL) ){
+	if (addr_dataflash(addr) && !addr_dataflash(dest)
+#ifndef CFG_NO_FLASH
+				 && (addr2info(dest) == NULL)
+#endif
+	   ){
 		int rc;
 		rc = read_dataflash(addr, count * size, (char *) dest);
 		if (rc != 1) {