From 84cd93272e384bf26e8346f2153a0b46dfb7b434 Mon Sep 17 00:00:00 2001 From: Gabe Black Date: Fri, 12 Oct 2012 14:26:11 +0000 Subject: fs: Add a Coreboot Filesystem (CBFS) driver and commands This change adds CBFS support and some commands to use it to u-boot. These commands are: cbfsinit - Initialize CBFS support and pull all metadata into RAM. The end of the ROM is an optional parameter which defaults to the standard 0xffffffff and can be used to support multiple CBFSes in a system. The last one set up with cbfsinit is the one that will be used. cbfsinfo - Print information from the CBFS header. cbfsls - Print out the size, type, and name of all the files in the current CBFS. Recognized types are translated into symbolic names. cbfsload - Load a file from CBFS into memory. Like the similar command for fat filesystems, you can optionally provide a maximum size. Support for CBFS is compiled in when the CONFIG_CMD_CBFS option is specified. The CBFS driver can also be used programmatically from within u-boot. If u-boot needs something out of CBFS very early before the heap is configured, it won't be able to use the normal CBFS support which caches some information in memory it allocates from the heap. The cbfs_file_find_uncached function searches a CBFS instance without touching the heap. Signed-off-by: Gabe Black Signed-off-by: Stefan Reinauer Signed-off-by: Simon Glass --- common/Makefile | 1 + common/cmd_cbfs.c | 214 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 215 insertions(+) create mode 100644 common/cmd_cbfs.c (limited to 'common') diff --git a/common/Makefile b/common/Makefile index fdfead7..281f4f1 100644 --- a/common/Makefile +++ b/common/Makefile @@ -70,6 +70,7 @@ COBJS-$(CONFIG_CMD_BMP) += cmd_bmp.o COBJS-$(CONFIG_CMD_BOOTLDR) += cmd_bootldr.o COBJS-$(CONFIG_CMD_BOOTSTAGE) += cmd_bootstage.o COBJS-$(CONFIG_CMD_CACHE) += cmd_cache.o +COBJS-$(CONFIG_CMD_CBFS) += cmd_cbfs.o COBJS-$(CONFIG_CMD_CONSOLE) += cmd_console.o COBJS-$(CONFIG_CMD_CPLBINFO) += cmd_cplbinfo.o COBJS-$(CONFIG_DATAFLASH_MMC_SELECT) += cmd_dataflash_mmc_mux.o diff --git a/common/cmd_cbfs.c b/common/cmd_cbfs.c new file mode 100644 index 0000000..3b6cfd8 --- /dev/null +++ b/common/cmd_cbfs.c @@ -0,0 +1,214 @@ +/* + * Copyright (c) 2011 The Chromium OS Authors. 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 + */ + +/* + * CBFS commands + */ +#include +#include +#include + +int do_cbfs_init(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) +{ + uintptr_t end_of_rom = 0xffffffff; + char *ep; + + if (argc > 2) { + printf("usage: cbfsls [end of rom]>\n"); + return 0; + } + if (argc == 2) { + end_of_rom = (int)simple_strtoul(argv[1], &ep, 16); + if (*ep) { + puts("\n** Invalid end of ROM **\n"); + return 1; + } + } + file_cbfs_init(end_of_rom); + if (file_cbfs_result != CBFS_SUCCESS) { + printf("%s.\n", file_cbfs_error()); + return 1; + } + return 0; +} + +U_BOOT_CMD( + cbfsinit, 2, 0, do_cbfs_init, + "initialize the cbfs driver", + "[end of rom]\n" + " - Initialize the cbfs driver. The optional 'end of rom'\n" + " parameter specifies where the end of the ROM is that the\n" + " CBFS is in. It defaults to 0xFFFFFFFF\n" +); + +int do_cbfs_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) +{ + const struct cbfs_cachenode *file; + unsigned long offset; + unsigned long count; + char buf[12]; + long size; + + if (argc < 3) { + printf("usage: cbfsload [bytes]\n"); + return 1; + } + + /* parse offset and count */ + offset = simple_strtoul(argv[1], NULL, 16); + if (argc == 4) + count = simple_strtoul(argv[3], NULL, 16); + else + count = 0; + + file = file_cbfs_find(argv[2]); + if (!file) { + if (file_cbfs_result == CBFS_FILE_NOT_FOUND) + printf("%s: %s\n", file_cbfs_error(), argv[2]); + else + printf("%s.\n", file_cbfs_error()); + return 1; + } + + printf("reading %s\n", file_cbfs_name(file)); + + size = file_cbfs_read(file, (void *)offset, count); + + printf("\n%ld bytes read\n", size); + + sprintf(buf, "%lX", size); + setenv("filesize", buf); + + return 0; +} + +U_BOOT_CMD( + cbfsload, 4, 0, do_cbfs_fsload, + "load binary file from a cbfs filesystem", + " [bytes]\n" + " - load binary file 'filename' from the cbfs to address 'addr'\n" +); + +int do_cbfs_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) +{ + const struct cbfs_cachenode *file = file_cbfs_get_first(); + int files = 0; + + if (!file) { + printf("%s.\n", file_cbfs_error()); + return 1; + } + + printf(" size type name\n"); + printf("------------------------------------------\n"); + while (file) { + u32 type = file_cbfs_type(file); + char *type_name = NULL; + const char *filename = file_cbfs_name(file); + + printf(" %8d", file_cbfs_size(file)); + + switch (type) { + case CBFS_TYPE_STAGE: + type_name = "stage"; + break; + case CBFS_TYPE_PAYLOAD: + type_name = "payload"; + break; + case CBFS_TYPE_OPTIONROM: + type_name = "option rom"; + break; + case CBFS_TYPE_BOOTSPLASH: + type_name = "boot splash"; + break; + case CBFS_TYPE_RAW: + type_name = "raw"; + break; + case CBFS_TYPE_VSA: + type_name = "vsa"; + break; + case CBFS_TYPE_MBI: + type_name = "mbi"; + break; + case CBFS_TYPE_MICROCODE: + type_name = "microcode"; + break; + case CBFS_COMPONENT_CMOS_DEFAULT: + type_name = "cmos default"; + break; + case CBFS_COMPONENT_CMOS_LAYOUT: + type_name = "cmos layout"; + break; + case -1UL: + type_name = "null"; + break; + } + if (type_name) + printf(" %16s", type_name); + else + printf(" %16d", type); + + if (filename[0]) + printf(" %s\n", filename); + else + printf(" %s\n", "(empty)"); + file_cbfs_get_next(&file); + files++; + } + + printf("\n%d file(s)\n\n", files); + return 0; +} + +U_BOOT_CMD( + cbfsls, 1, 1, do_cbfs_ls, + "list files", + " - list the files in the cbfs\n" +); + +int do_cbfs_fsinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) +{ + const struct cbfs_header *header = file_cbfs_get_header(); + + if (!header) { + printf("%s.\n", file_cbfs_error()); + return 1; + } + + printf("\n"); + printf("CBFS version: %#x\n", header->version); + printf("ROM size: %#x\n", header->rom_size); + printf("Boot block size: %#x\n", header->boot_block_size); + printf("CBFS size: %#x\n", + header->rom_size - header->boot_block_size - header->offset); + printf("Alignment: %d\n", header->align); + printf("Offset: %#x\n", header->offset); + printf("\n"); + + return 0; +} + +U_BOOT_CMD( + cbfsinfo, 1, 1, do_cbfs_fsinfo, + "print information about filesystem", + " - print information about the cbfs filesystem\n" +); -- cgit v1.1