fs: fix number base behaviour change in fatload/ext*load

Commit 045fa1e "fs: add filesystem switch libary, implement ls and
fsload commands" unified the implementation of fatload and ext*load
with the new command fsload. However, this altered the interpretation
of command-line numbers from always being base-16, to requiring a "0x"
prefix for base-16 numbers. Enhance do_fsload() to allow commands to
specify which base to use.

Use base 0, thus requiring a "0x" prefix for the new fsload command.
This feels much cleaner than assuming base 16.

Use base 16 for the pre-existing fatload and ext*load to prevent a
change in behaviour.

Use base 16 exclusively for the loadaddr environment variable, since
that variable is interpreted in multiple places, so we don't want the
behaviour to change.

Update command help text to make it clear where numbers are assumed to
be hex, and where an explicit "0x" prefix is required.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>

common/cmd_ext2.c

@@ -49,7 +49,7 @@ int do_ext2ls (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  */
 int do_ext2load (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
-	return do_fsload(cmdtp, flag, argc, argv, FS_TYPE_EXT);
+	return do_fsload(cmdtp, flag, argc, argv, FS_TYPE_EXT, 16);
 }
 
 U_BOOT_CMD(
@@ -64,5 +64,6 @@ U_BOOT_CMD(
 	"load binary file from a Ext2 filesystem",
 	"<interface> <dev[:part]> [addr] [filename] [bytes]\n"
 	"    - load binary file 'filename' from 'dev' on 'interface'\n"
-	"      to address 'addr' from ext2 filesystem"
+	"      to address 'addr' from ext2 filesystem.\n"
+	"      All numeric parameters are assumed to be hex."
 );

common/cmd_ext4.c

@@ -59,7 +59,7 @@
 int do_ext4_load(cmd_tbl_t *cmdtp, int flag, int argc,
 						char *const argv[])
 {
-	return do_fsload(cmdtp, flag, argc, argv, FS_TYPE_EXT);
+	return do_fsload(cmdtp, flag, argc, argv, FS_TYPE_EXT, 16);
 }
 
 int do_ext4_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
@@ -136,4 +136,5 @@ U_BOOT_CMD(ext4load, 6, 0, do_ext4_load,
 	   "load binary file from a Ext4 filesystem",
 	   "<interface> <dev[:part]> [addr] [filename] [bytes]\n"
 	   "    - load binary file 'filename' from 'dev' on 'interface'\n"
-	   "      to address 'addr' from ext4 filesystem");
+	   "      to address 'addr' from ext4 filesystem.\n"
+	   "      All numeric parameters are assumed to be hex.");

common/cmd_fat.c

@@ -35,7 +35,7 @@
 
 int do_fat_fsload (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
-	return do_fsload(cmdtp, flag, argc, argv, FS_TYPE_FAT);
+	return do_fsload(cmdtp, flag, argc, argv, FS_TYPE_FAT, 16);
 }
 
 
@@ -48,7 +48,8 @@ U_BOOT_CMD(
 	"      'pos' gives the file position to start loading from.\n"
 	"      If 'pos' is omitted, 0 is used. 'pos' requires 'bytes'.\n"
 	"      'bytes' gives the size to load. If 'bytes' is 0 or omitted,\n"
-	"      the load stops on end of file."
+	"      the load stops on end of file.\n"
+	"      All numeric parameters are assumed to be hex."
 );
 
 int do_fat_ls (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])

common/cmd_fs.c

@@ -22,7 +22,7 @@
 
 int do_fsload_wrapper(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
-	return do_fsload(cmdtp, flag, argc, argv, FS_TYPE_ANY);
+	return do_fsload(cmdtp, flag, argc, argv, FS_TYPE_ANY, 0);
 }
 
 U_BOOT_CMD(
@@ -34,7 +34,9 @@ U_BOOT_CMD(
 	"      'bytes' gives the size to load in bytes.\n"
 	"      If 'bytes' is 0 or omitted, the file is read until the end.\n"
 	"      'pos' gives the file byte position to start reading from.\n"
-	"      If 'pos' is 0 or omitted, the file is read from the start."
+	"      If 'pos' is 0 or omitted, the file is read from the start.\n"
+	"      All numeric parameters are assumed to be decimal,\n"
+	"      unless specified otherwise using a leading \"0x\"."
 );
 
 int do_ls_wrapper(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])

fs/fs.c

@@ -248,7 +248,7 @@ int fs_read(const char *filename, ulong addr, int offset, int len)
 }
 
 int do_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
-		int fstype)
+		int fstype, int cmdline_base)
 {
 	unsigned long addr;
 	const char *addr_str;
@@ -267,7 +267,7 @@ int do_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 		return 1;
 
 	if (argc >= 4) {
-		addr = simple_strtoul(argv[3], NULL, 0);
+		addr = simple_strtoul(argv[3], NULL, cmdline_base);
 	} else {
 		addr_str = getenv("loadaddr");
 		if (addr_str != NULL)
@@ -285,11 +285,11 @@ int do_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 		}
 	}
 	if (argc >= 6)
-		bytes = simple_strtoul(argv[5], NULL, 0);
+		bytes = simple_strtoul(argv[5], NULL, cmdline_base);
 	else
 		bytes = 0;
 	if (argc >= 7)
-		pos = simple_strtoul(argv[6], NULL, 0);
+		pos = simple_strtoul(argv[6], NULL, cmdline_base);
 	else
 		pos = 0;
 

include/fs.h

@@ -58,7 +58,7 @@ int fs_read(const char *filename, ulong addr, int offset, int len);
  * to a specific filesystem type via the fstype parameter.
  */
 int do_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
-		int fstype);
+		int fstype, int cmdline_base);
 int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
 		int fstype);