From: Stephen Warren swarren@nvidia.com

Implement "ls" and "fsload" commands that act like {fat,ext2}{ls,load}, and transparently handle either file-system. This scheme could easily be extended to other filesystem types; I only didn't do it for zfs because I don't have any filesystems of that type to test with.

Replace the implementation of {fat,ext[24]}{ls,load} with this new code too.

Signed-off-by: Stephen Warren swarren@nvidia.com --- v3: * Updated the implementation of the new commands to be suitable for use as the body of {fat,ext[24]}{ls,load} too. * Enhanced the implementation to make more fsload parameters optional (load address, filename); they can now come from environment variables like ext2load supported. * Moved implementation into fs.c. * Removed cmd_ext_common.c. * s/partition/filesystem/ in patch subject. v2: * Build cmd_fs.c when CONFIG_CMD_FS_GENERIC not always. * Use new CONFIG_FS_{FAT,EXT4} rather than CONFIG_CMD_{FAT,EXT2}. * Implemented fs_close() and call it from the tail of fs_ls() and fs_read(). This ensures that any other usage of e.g. the ext4 library between fs_*() calls, then the two usages won't interfere. * Re-organized fs.c to reduce the number of ifdef blocks. * Added argc checking to do_ls(). --- Makefile | 3 +- common/Makefile | 6 +- common/cmd_ext2.c | 13 +-- common/cmd_ext4.c | 12 +-- common/cmd_ext_common.c | 197 ------------------------------- common/cmd_fat.c | 76 +------------ common/cmd_fs.c | 51 ++++++++ fs/Makefile | 47 ++++++++ fs/fs.c | 298 +++++++++++++++++++++++++++++++++++++++++++++++ include/ext_common.h | 3 - include/fs.h | 65 ++++++++++ 11 files changed, 473 insertions(+), 298 deletions(-) delete mode 100644 common/cmd_ext_common.c create mode 100644 common/cmd_fs.c create mode 100644 fs/Makefile create mode 100644 fs/fs.c create mode 100644 include/fs.h

diff --git a/Makefile b/Makefile index ab34fa7..b92e2af 100644 --- a/Makefile +++ b/Makefile @@ -260,7 +260,8 @@ LIBS-y += drivers/net/npe/libnpe.o endif LIBS-$(CONFIG_OF_EMBED) += dts/libdts.o LIBS-y += arch/$(ARCH)/lib/lib$(ARCH).o -LIBS-y += fs/cramfs/libcramfs.o \ +LIBS-y += fs/libfs.o \ + fs/cramfs/libcramfs.o \ fs/ext4/libext4fs.o \ fs/fat/libfat.o \ fs/fdos/libfdos.o \ diff --git a/common/Makefile b/common/Makefile index a4eb477..cc22c52 100644 --- a/common/Makefile +++ b/common/Makefile @@ -88,11 +88,6 @@ COBJS-$(CONFIG_CMD_ELF) += cmd_elf.o COBJS-$(CONFIG_SYS_HUSH_PARSER) += cmd_exit.o COBJS-$(CONFIG_CMD_EXT4) += cmd_ext4.o COBJS-$(CONFIG_CMD_EXT2) += cmd_ext2.o -ifdef CONFIG_CMD_EXT4 -COBJS-y += cmd_ext_common.o -else -COBJS-$(CONFIG_CMD_EXT2) += cmd_ext_common.o -endif COBJS-$(CONFIG_CMD_FAT) += cmd_fat.o COBJS-$(CONFIG_CMD_FDC)$(CONFIG_CMD_FDOS) += cmd_fdc.o COBJS-$(CONFIG_OF_LIBFDT) += cmd_fdt.o fdt_support.o @@ -102,6 +97,7 @@ COBJS-$(CONFIG_CMD_FLASH) += cmd_flash.o ifdef CONFIG_FPGA COBJS-$(CONFIG_CMD_FPGA) += cmd_fpga.o endif +COBJS-$(CONFIG_CMD_FS_GENERIC) += cmd_fs.o COBJS-$(CONFIG_CMD_GPIO) += cmd_gpio.o COBJS-$(CONFIG_CMD_I2C) += cmd_i2c.o COBJS-$(CONFIG_CMD_IDE) += cmd_ide.o diff --git a/common/cmd_ext2.c b/common/cmd_ext2.c index c27d9c7..196e3d5 100644 --- a/common/cmd_ext2.c +++ b/common/cmd_ext2.c @@ -37,15 +37,11 @@ /* * Ext2fs support */ -#include <common.h> -#include <ext_common.h> +#include <fs.h>

int do_ext2ls (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { - if (do_ext_ls(cmdtp, flag, argc, argv)) - return -1; - - return 0; + return do_ls(cmdtp, flag, argc, argv, FS_EXT); }

/****************************************************************************** @@ -53,10 +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[]) { - if (do_ext_load(cmdtp, flag, argc, argv)) - return -1; - - return 0; + return do_fsload(cmdtp, flag, argc, argv, FS_EXT); }

U_BOOT_CMD( diff --git a/common/cmd_ext4.c b/common/cmd_ext4.c index ca46561..ffdfd0c 100644 --- a/common/cmd_ext4.c +++ b/common/cmd_ext4.c @@ -47,10 +47,10 @@ #include <image.h> #include <linux/ctype.h> #include <asm/byteorder.h> -#include <ext_common.h> #include <ext4fs.h> #include <linux/stat.h> #include <malloc.h> +#include <fs.h>

#if defined(CONFIG_CMD_USB) && defined(CONFIG_USB_STORAGE) #include <usb.h> @@ -59,18 +59,12 @@ int do_ext4_load(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) { - if (do_ext_load(cmdtp, flag, argc, argv)) - return -1; - - return 0; + return do_fsload(cmdtp, flag, argc, argv, FS_EXT); }

int do_ext4_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) { - if (do_ext_ls(cmdtp, flag, argc, argv)) - return -1; - - return 0; + return do_ls(cmdtp, flag, argc, argv, FS_EXT); }

#if defined(CONFIG_CMD_EXT4_WRITE) diff --git a/common/cmd_ext_common.c b/common/cmd_ext_common.c deleted file mode 100644 index 1952f4d..0000000 --- a/common/cmd_ext_common.c +++ /dev/null @@ -1,197 +0,0 @@ -/* - * (C) Copyright 2011 - 2012 Samsung Electronics - * EXT2/4 filesystem implementation in Uboot by - * Uma Shankar uma.shankar@samsung.com - * Manjunatha C Achar a.manjunatha@samsung.com - * - * Ext4fs support - * made from existing cmd_ext2.c file of Uboot - * - * (C) Copyright 2004 - * esd gmbh <www.esd-electronics.com> - * Reinhard Arlt reinhard.arlt@esd-electronics.com - * - * made from cmd_reiserfs by - * - * (C) Copyright 2003 - 2004 - * Sysgo Real-Time Solutions, AG <www.elinos.com> - * Pavel Bartusek pba@sysgo.com - * - * 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 - * - */ - -/* - * Changelog: - * 0.1 - Newly created file for ext4fs support. Taken from cmd_ext2.c - * file in uboot. Added ext4fs ls load and write support. - */ - -#include <common.h> -#include <part.h> -#include <config.h> -#include <command.h> -#include <image.h> -#include <linux/ctype.h> -#include <asm/byteorder.h> -#include <ext_common.h> -#include <ext4fs.h> -#include <linux/stat.h> -#include <malloc.h> - -#if defined(CONFIG_CMD_USB) && defined(CONFIG_USB_STORAGE) -#include <usb.h> -#endif - -#if !defined(CONFIG_DOS_PARTITION) && !defined(CONFIG_EFI_PARTITION) -#error DOS or EFI partition support must be selected -#endif - -#define DOS_PART_MAGIC_OFFSET 0x1fe -#define DOS_FS_TYPE_OFFSET 0x36 -#define DOS_FS32_TYPE_OFFSET 0x52 - -int do_ext_load(cmd_tbl_t *cmdtp, int flag, int argc, - char *const argv[]) -{ - char *filename = NULL; - int dev, part; - ulong addr = 0; - int filelen; - disk_partition_t info; - block_dev_desc_t *dev_desc; - char buf[12]; - unsigned long count; - const char *addr_str; - - count = 0; - addr = simple_strtoul(argv[3], NULL, 16); - filename = getenv("bootfile"); - switch (argc) { - case 3: - addr_str = getenv("loadaddr"); - if (addr_str != NULL) - addr = simple_strtoul(addr_str, NULL, 16); - else - addr = CONFIG_SYS_LOAD_ADDR; - - break; - case 4: - break; - case 5: - filename = argv[4]; - break; - case 6: - filename = argv[4]; - count = simple_strtoul(argv[5], NULL, 16); - break; - - default: - return cmd_usage(cmdtp); - } - - if (!filename) { - puts("** No boot file defined **\n"); - return 1; - } - - part = get_device_and_partition(argv[1], argv[2], &dev_desc, &info, 1); - if (part < 0) - return 1; - - dev = dev_desc->dev; - printf("Loading file "%s" from %s device %d%c%c\n", - filename, argv[1], dev, - part ? ':' : ' ', part ? part + '0' : ' '); - - ext4fs_set_blk_dev(dev_desc, &info); - - if (!ext4fs_mount(info.size)) { - printf("** Bad ext2 partition or disk - %s %d:%d **\n", - argv[1], dev, part); - ext4fs_close(); - goto fail; - } - - filelen = ext4fs_open(filename); - if (filelen < 0) { - printf("** File not found %s\n", filename); - ext4fs_close(); - goto fail; - } - if ((count < filelen) && (count != 0)) - filelen = count; - - if (ext4fs_read((char *)addr, filelen) != filelen) { - printf("** Unable to read "%s" from %s %d:%d **\n", - filename, argv[1], dev, part); - ext4fs_close(); - goto fail; - } - - ext4fs_close(); - /* Loading ok, update default load address */ - load_addr = addr; - - printf("%d bytes read\n", filelen); - sprintf(buf, "%X", filelen); - setenv("filesize", buf); - - return 0; -fail: - return 1; -} - -int do_ext_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) -{ - const char *filename = "/"; - int dev; - int part; - block_dev_desc_t *dev_desc; - disk_partition_t info; - - if (argc < 2) - return cmd_usage(cmdtp); - - part = get_device_and_partition(argv[1], argv[2], &dev_desc, &info, 1); - if (part < 0) - return 1; - - if (argc == 4) - filename = argv[3]; - - dev = dev_desc->dev; - ext4fs_set_blk_dev(dev_desc, &info); - - if (!ext4fs_mount(info.size)) { - printf("** Bad ext2 partition or disk - %s %d:%d **\n", - argv[1], dev, part); - ext4fs_close(); - goto fail; - } - - if (ext4fs_ls(filename)) { - printf("** Error extfs_ls() **\n"); - ext4fs_close(); - goto fail; - }; - - ext4fs_close(); - return 0; - -fail: - return 1; -} diff --git a/common/cmd_fat.c b/common/cmd_fat.c index c38302d..298899d 100644 --- a/common/cmd_fat.c +++ b/common/cmd_fat.c @@ -31,54 +31,11 @@ #include <ata.h> #include <part.h> #include <fat.h> - +#include <fs.h>

int do_fat_fsload (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { - long size; - unsigned long offset; - unsigned long count = 0; - unsigned long pos = 0; - char buf [12]; - block_dev_desc_t *dev_desc=NULL; - disk_partition_t info; - int part, dev; - - if (argc < 5) { - printf("usage: fatload <interface> [<dev[:part]>] " - "<addr> <filename> [bytes [pos]]\n"); - return 1; - } - - part = get_device_and_partition(argv[1], argv[2], &dev_desc, &info, 1); - if (part < 0) - return 1; - - dev = dev_desc->dev; - if (fat_set_blk_dev(dev_desc, &info) != 0) { - printf("\n** Unable to use %s %d:%d for fatload **\n", - argv[1], dev, part); - return 1; - } - offset = simple_strtoul(argv[3], NULL, 16); - if (argc >= 6) - count = simple_strtoul(argv[5], NULL, 16); - if (argc >= 7) - pos = simple_strtoul(argv[6], NULL, 16); - size = file_fat_read_at(argv[4], pos, (unsigned char *)offset, count); - - if(size==-1) { - printf("\n** Unable to read "%s" from %s %d:%d **\n", - argv[4], argv[1], dev, part); - return 1; - } - - printf("\n%ld bytes read\n", size); - - sprintf(buf, "%lX", size); - setenv("filesize", buf); - - return 0; + return do_fsload(cmdtp, flag, argc, argv, FS_FAT); }

@@ -96,34 +53,7 @@ U_BOOT_CMD(

int do_fat_ls (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { - char *filename = "/"; - int ret, dev, part; - block_dev_desc_t *dev_desc=NULL; - disk_partition_t info; - - if (argc < 2) { - printf("usage: fatls <interface> [<dev[:part]>] [directory]\n"); - return 0; - } - - part = get_device_and_partition(argv[1], argv[2], &dev_desc, &info, 1); - if (part < 0) - return 1; - - dev = dev_desc->dev; - if (fat_set_blk_dev(dev_desc, &info) != 0) { - printf("\n** Unable to use %s %d:%d for fatls **\n", - argv[1], dev, part); - return 1; - } - if (argc == 4) - ret = file_fat_ls(argv[3]); - else - ret = file_fat_ls(filename); - - if(ret!=0) - printf("No Fat FS detected\n"); - return ret; + return do_ls(cmdtp, flag, argc, argv, FS_FAT); }

U_BOOT_CMD( diff --git a/common/cmd_fs.c b/common/cmd_fs.c new file mode 100644 index 0000000..297a5b2 --- /dev/null +++ b/common/cmd_fs.c @@ -0,0 +1,51 @@ +/* + * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. + * + * Inspired by cmd_ext_common.c, cmd_fat.c. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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, see http://www.gnu.org/licenses/. + */ + +#include <common.h> +#include <command.h> +#include <fs.h> + +int do_fsload_wrapper(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + return do_fsload(cmdtp, flag, argc, argv, FS_ANY); +} + +U_BOOT_CMD( + fsload, 7, 0, do_fsload_wrapper, + "load binary file from a filesystem", + "<interface> [<dev[:part]> [<addr> [<filename> [bytes [pos]]]]]\n" + " - Load binary file 'filename' from partition 'part' on device\n" + " type 'interface' instance 'dev' to address 'addr' in memory.\n" + " '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." +); + +int do_ls_wrapper(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + return do_ls(cmdtp, flag, argc, argv, FS_ANY); +} + +U_BOOT_CMD( + ls, 4, 1, do_ls_wrapper, + "list files in a directory (default /)", + "<interface> [<dev[:part]> [directory]]\n" + " - List files in directory 'directory' of partition 'part' on\n" + " device type 'interface' instance 'dev'." +); diff --git a/fs/Makefile b/fs/Makefile new file mode 100644 index 0000000..d0ab3ae --- /dev/null +++ b/fs/Makefile @@ -0,0 +1,47 @@ +# +# (C) Copyright 2000-2006 +# Wolfgang Denk, DENX Software Engineering, wd@denx.de. +# Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. +# +# See file CREDITS for list of people who contributed to this +# project. +# +# 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 $(TOPDIR)/config.mk + +LIB = $(obj)libfs.o + +COBJS-y += fs.o + +COBJS := $(COBJS-y) +SRCS := $(COBJS:.o=.c) +OBJS := $(addprefix $(obj),$(COBJS)) + +all: $(LIB) + +$(LIB): $(obj).depend $(OBJS) + $(call cmd_link_o_target, $(OBJS)) + +######################################################################### + +# defines $(obj).depend target +include $(SRCTREE)/rules.mk + +sinclude $(obj).depend + +######################################################################### diff --git a/fs/fs.c b/fs/fs.c new file mode 100644 index 0000000..49c96bb --- /dev/null +++ b/fs/fs.c @@ -0,0 +1,298 @@ +/* + * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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, see http://www.gnu.org/licenses/. + */ + +#include <config.h> +#include <common.h> +#include <part.h> +#include <ext4fs.h> +#include <fat.h> +#include <fs.h> + +#define FS_TYPE_INVALID 0 +#define FS_TYPE_FAT 1 +#define FS_TYPE_EXT 2 + +static block_dev_desc_t *fs_dev_desc; +static disk_partition_t fs_partition; +static int fs_type = FS_TYPE_INVALID; + +static inline int fs_ls_unsupported(const char *dirname) +{ + printf("** Unrecognized filesystem type **\n"); + return -1; +} + +static inline int fs_read_unsupported(const char *filename, ulong addr, + int offset, int len) +{ + printf("** Unrecognized filesystem type **\n"); + return -1; +} + +#ifdef CONFIG_FS_FAT +static int fs_probe_fat(void) +{ + return fat_set_blk_dev(fs_dev_desc, &fs_partition); +} + +static void fs_close_fat(void) +{ +} + +#define fs_ls_fat file_fat_ls + +static int fs_read_fat(const char *filename, ulong addr, int offset, int len) +{ + int len_read; + + len_read = file_fat_read_at(filename, offset, + (unsigned char *)addr, len); + if (len_read == -1) { + printf("** Unable to read file %s **\n", filename); + return -1; + } + + return len_read; +} +#else +static inline int fs_probe_fat(void) +{ + return -1; +} + +static inline void fs_close_fat(void) +{ +} + +#define fs_ls_fat fs_ls_unsupported +#define fs_read_fat fs_read_unsupported +#endif + +#ifdef CONFIG_FS_EXT4 +static int fs_probe_ext(void) +{ + ext4fs_set_blk_dev(fs_dev_desc, &fs_partition); + + if (!ext4fs_mount(fs_partition.size)) { + ext4fs_close(); + return -1; + } + + return 0; +} + +static void fs_close_ext(void) +{ + ext4fs_close(); +} + +#define fs_ls_ext ext4fs_ls + +static int fs_read_ext(const char *filename, ulong addr, int offset, int len) +{ + int file_len; + int len_read; + + if (offset != 0) { + printf("** Cannot support non-zero offset **\n"); + return -1; + } + + file_len = ext4fs_open(filename); + if (file_len < 0) { + printf("** File not found %s **\n", filename); + ext4fs_close(); + return -1; + } + + if (len == 0) + len = file_len; + + len_read = ext4fs_read((char *)addr, len); + ext4fs_close(); + + if (len_read != len) { + printf("** Unable to read file %s **\n", filename); + return -1; + } + + return len_read; +} +#else +static inline int fs_probe_ext(void) +{ + return -1; +} + +static inline void fs_close_ext(void) +{ +} + +#define fs_ls_ext fs_ls_unsupported +#define fs_read_ext fs_read_unsupported +#endif + +int fs_set_blk_dev(const char *ifname, const char *dev_part_str, u32 fstypes) +{ + int part; + + part = get_device_and_partition(ifname, dev_part_str, &fs_dev_desc, + &fs_partition, 1); + if (part < 0) + return -1; + + if ((fstypes & FS_FAT) && !fs_probe_fat()) { + fs_type = FS_TYPE_FAT; + return 0; + } + + if ((fstypes & FS_EXT) && !fs_probe_ext()) { + fs_type = FS_TYPE_EXT; + return 0; + } + + printf("** Unrecognized filesystem type **\n"); + return -1; +} + +static void fs_close(void) +{ + switch (fs_type) { + case FS_TYPE_FAT: + fs_close_fat(); + break; + case FS_TYPE_EXT: + fs_close_ext(); + break; + default: + break; + } + + fs_type = FS_TYPE_INVALID; +} + +int fs_ls(const char *dirname) +{ + int ret; + + switch (fs_type) { + case FS_TYPE_FAT: + ret = fs_ls_fat(dirname); + break; + case FS_TYPE_EXT: + ret = fs_ls_ext(dirname); + break; + default: + ret = fs_ls_unsupported(dirname); + break; + } + + fs_close(); + + return ret; +} + +int fs_read(const char *filename, ulong addr, int offset, int len) +{ + int ret; + + switch (fs_type) { + case FS_TYPE_FAT: + ret = fs_read_fat(filename, addr, offset, len); + break; + case FS_TYPE_EXT: + ret = fs_read_ext(filename, addr, offset, len); + break; + default: + ret = fs_read_unsupported(filename, addr, offset, len); + break; + } + + fs_close(); + + return ret; +} + +int do_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], + u32 fstypes) +{ + unsigned long addr; + const char *addr_str; + const char *filename; + unsigned long bytes; + unsigned long pos; + int len_read; + char buf[12]; + + if (argc < 5) + return CMD_RET_USAGE; + + if (fs_set_blk_dev(argv[1], argv[2], fstypes)) + return 1; + + if (argc >= 4) { + addr = simple_strtoul(argv[3], NULL, 0); + } else { + addr_str = getenv("loadaddr"); + if (addr_str != NULL) + addr = simple_strtoul(addr_str, NULL, 16); + else + addr = CONFIG_SYS_LOAD_ADDR; + } + if (argc >= 5) { + filename = argv[4]; + } else { + filename = getenv("bootfile"); + if (!filename) { + puts("** No boot file defined **\n"); + return 1; + } + } + if (argc >= 6) + bytes = simple_strtoul(argv[5], NULL, 0); + else + bytes = 0; + if (argc >= 7) + pos = simple_strtoul(argv[6], NULL, 0); + else + pos = 0; + + len_read = fs_read(filename, addr, pos, bytes); + if (len_read <= 0) + return 1; + + printf("%d bytes read\n", len_read); + + sprintf(buf, "0x%x", len_read); + setenv("filesize", buf); + + return 0; +} + +int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], + u32 fstypes) +{ + if (argc < 2) + return CMD_RET_USAGE; + + if (fs_set_blk_dev(argv[1], (argc >= 3) ? argv[2] : NULL, fstypes)) + return 1; + + if (fs_ls(argc == 4 ? argv[3] : "/")) + return 1; + + return 0; +} diff --git a/include/ext_common.h b/include/ext_common.h index ce73857..86373a6 100644 --- a/include/ext_common.h +++ b/include/ext_common.h @@ -195,7 +195,4 @@ int do_ext4_load(cmd_tbl_t *cmdtp, int flag, int argc, int do_ext4_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]); int do_ext4_write(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]); -int do_ext_load(cmd_tbl_t *cmdtp, int flag, int argc, - char *const argv[]); -int do_ext_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]); #endif diff --git a/include/fs.h b/include/fs.h new file mode 100644 index 0000000..cabfc97 --- /dev/null +++ b/include/fs.h @@ -0,0 +1,65 @@ +/* + * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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, see http://www.gnu.org/licenses/. + */ +#ifndef _FS_H +#define _FS_H + +#include <common.h> + +#define FS_FAT (1 << 0) +#define FS_EXT (1 << 1) +#define FS_ANY 0xffffffff + +/* + * Tell the fs layer which block device an partition to use for future + * commands. This also internally identifies the filesystem that is present + * within the partition. The identification process may be limited to a + * specific set of filesystem types by passing FS_* in the fstypes parameter. + * + * Returns 0 on success. + * Returns non-zero if there is an error accessing the disk or partition, or + * no known filesystem type could be recognized on it. + */ +int fs_set_blk_dev(const char *ifname, const char *dev_part_str, u32 fstypes); + +/* + * Print the list of files on the partition previously set by fs_set_blk_dev(), + * in directory "dirname". + * + * Returns 0 on success. Returns non-zero on error. + */ +int fs_ls(const char *dirname); + +/* + * Read file "filename" from the partition previously set by fs_set_blk_dev(), + * to address "addr", starting at byte offset "offset", and reading "len" + * bytes. "offset" may be 0 to read from the start of the file. "len" may be + * 0 to read the entire file. Note that not all filesystem types support + * either/both offset!=0 or len!=0. + * + * Returns number of bytes read on success. Returns <= 0 on error. + */ +int fs_read(const char *filename, ulong addr, int offset, int len); + +/* + * Common implementation for various filesystem commands, optionally limited + * to specific filesystem types via the fstypes parameter. + */ +int do_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], + u32 fstypes); +int do_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[], + u32 fstypes); + +#endif /* _FS_H */