endif
LIBS-$(CONFIG_OF_EMBED) += dts/libdts.o
LIBS-y += arch/$(ARCH)/lib/lib$(ARCH).o
-LIBS-y += fs/cramfs/libcramfs.o \
+LIBS-y += fs/cbfs/libcbfs.o \
+ fs/cramfs/libcramfs.o \
fs/ext4/libext4fs.o \
fs/fat/libfat.o \
fs/fdos/libfdos.o \
This will also enable the command "fatwrite" enabling the
user to write files to FAT.
+CBFS (Coreboot Filesystem) support
+ CONFIG_CMD_CBFS
+
+ Define this to enable support for reading from a Coreboot
+ filesystem. Available commands are cbfsinit, cbfsinfo, cbfsls
+ and cbfsload.
+
- Keyboard Support:
CONFIG_ISA_KEYBOARD
COBJS-$(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
--- /dev/null
+/*
+ * 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 <common.h>
+#include <command.h>
+#include <cbfs.h>
+
+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 <addr> <filename> [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",
+ "<addr> <filename> [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"
+);
#
#
+subdirs-$(CONFIG_CMD_CBFS) += cbfs
subdirs-$(CONFIG_CMD_CRAMFS) := cramfs
subdirs-$(CONFIG_CMD_EXT4) += ext4
ifndef CONFIG_CMD_EXT4
--- /dev/null
+#
+# 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 = $(obj)libcbfs.o
+
+COBJS-$(CONFIG_CMD_CBFS) := cbfs.o
+
+SRCS := $(COBJS-y:.o=.c)
+OBJS := $(addprefix $(obj),$(COBJS-y))
+
+all: $(LIB)
+
+$(LIB): $(obj).depend $(OBJS)
+ $(call cmd_link_o_target, $(OBJS))
+
+
+#########################################################################
+
+# defines $(obj).depend target
+include $(SRCTREE)/rules.mk
+
+sinclude $(obj).depend
+
+#########################################################################
--- /dev/null
+/*
+ * 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
+ */
+
+#include <cbfs.h>
+#include <malloc.h>
+#include <asm/byteorder.h>
+
+enum cbfs_result file_cbfs_result;
+
+const char *file_cbfs_error(void)
+{
+ switch (file_cbfs_result) {
+ case CBFS_SUCCESS:
+ return "Success";
+ case CBFS_NOT_INITIALIZED:
+ return "CBFS not initialized";
+ case CBFS_BAD_HEADER:
+ return "Bad CBFS header";
+ case CBFS_BAD_FILE:
+ return "Bad CBFS file";
+ case CBFS_FILE_NOT_FOUND:
+ return "File not found";
+ default:
+ return "Unknown";
+ }
+}
+
+
+static const u32 good_magic = 0x4f524243;
+static const u8 good_file_magic[] = "LARCHIVE";
+
+
+static int initialized;
+static struct cbfs_header cbfs_header;
+static struct cbfs_cachenode *file_cache;
+
+/* Do endian conversion on the CBFS header structure. */
+static void swap_header(struct cbfs_header *dest, struct cbfs_header *src)
+{
+ dest->magic = be32_to_cpu(src->magic);
+ dest->version = be32_to_cpu(src->version);
+ dest->rom_size = be32_to_cpu(src->rom_size);
+ dest->boot_block_size = be32_to_cpu(src->boot_block_size);
+ dest->align = be32_to_cpu(src->align);
+ dest->offset = be32_to_cpu(src->offset);
+}
+
+/* Do endian conversion on a CBFS file header. */
+static void swap_file_header(struct cbfs_fileheader *dest,
+ const struct cbfs_fileheader *src)
+{
+ memcpy(&dest->magic, &src->magic, sizeof(dest->magic));
+ dest->len = be32_to_cpu(src->len);
+ dest->type = be32_to_cpu(src->type);
+ dest->checksum = be32_to_cpu(src->checksum);
+ dest->offset = be32_to_cpu(src->offset);
+}
+
+/*
+ * Given a starting position in memory, scan forward, bounded by a size, and
+ * find the next valid CBFS file. No memory is allocated by this function. The
+ * caller is responsible for allocating space for the new file structure.
+ *
+ * @param start The location in memory to start from.
+ * @param size The size of the memory region to search.
+ * @param align The alignment boundaries to check on.
+ * @param newNode A pointer to the file structure to load.
+ * @param used A pointer to the count of of bytes scanned through,
+ * including the file if one is found.
+ *
+ * @return 1 if a file is found, 0 if one isn't.
+ */
+static int file_cbfs_next_file(u8 *start, u32 size, u32 align,
+ struct cbfs_cachenode *newNode, u32 *used)
+{
+ struct cbfs_fileheader header;
+
+ *used = 0;
+
+ while (size >= align) {
+ const struct cbfs_fileheader *fileHeader =
+ (const struct cbfs_fileheader *)start;
+ u32 name_len;
+ u32 step;
+
+ /* Check if there's a file here. */
+ if (memcmp(good_file_magic, &(fileHeader->magic),
+ sizeof(fileHeader->magic))) {
+ *used += align;
+ size -= align;
+ start += align;
+ continue;
+ }
+
+ swap_file_header(&header, fileHeader);
+ if (header.offset < sizeof(const struct cbfs_cachenode *) ||
+ header.offset > header.len) {
+ file_cbfs_result = CBFS_BAD_FILE;
+ return -1;
+ }
+ newNode->next = NULL;
+ newNode->type = header.type;
+ newNode->data = start + header.offset;
+ newNode->data_length = header.len;
+ name_len = header.offset - sizeof(struct cbfs_cachenode *);
+ newNode->name = (char *)fileHeader +
+ sizeof(struct cbfs_cachenode *);
+ newNode->name_length = name_len;
+ newNode->checksum = header.checksum;
+
+ step = header.len;
+ if (step % align)
+ step = step + align - step % align;
+
+ *used += step;
+ return 1;
+ }
+ return 0;
+}
+
+/* Look through a CBFS instance and copy file metadata into regular memory. */
+static void file_cbfs_fill_cache(u8 *start, u32 size, u32 align)
+{
+ struct cbfs_cachenode *cache_node;
+ struct cbfs_cachenode *newNode;
+ struct cbfs_cachenode **cache_tail = &file_cache;
+
+ /* Clear out old information. */
+ cache_node = file_cache;
+ while (cache_node) {
+ struct cbfs_cachenode *oldNode = cache_node;
+ cache_node = cache_node->next;
+ free(oldNode);
+ }
+ file_cache = NULL;
+
+ while (size >= align) {
+ int result;
+ u32 used;
+
+ newNode = (struct cbfs_cachenode *)
+ malloc(sizeof(struct cbfs_cachenode));
+ result = file_cbfs_next_file(start, size, align,
+ newNode, &used);
+
+ if (result < 0) {
+ free(newNode);
+ return;
+ } else if (result == 0) {
+ free(newNode);
+ break;
+ }
+ *cache_tail = newNode;
+ cache_tail = &newNode->next;
+
+ size -= used;
+ start += used;
+ }
+ file_cbfs_result = CBFS_SUCCESS;
+}
+
+/* Get the CBFS header out of the ROM and do endian conversion. */
+static int file_cbfs_load_header(uintptr_t end_of_rom,
+ struct cbfs_header *header)
+{
+ struct cbfs_header *header_in_rom;
+
+ header_in_rom = (struct cbfs_header *)(uintptr_t)
+ *(u32 *)(end_of_rom - 3);
+ swap_header(header, header_in_rom);
+
+ if (header->magic != good_magic || header->offset >
+ header->rom_size - header->boot_block_size) {
+ file_cbfs_result = CBFS_BAD_HEADER;
+ return 1;
+ }
+ return 0;
+}
+
+void file_cbfs_init(uintptr_t end_of_rom)
+{
+ u8 *start_of_rom;
+ initialized = 0;
+
+ if (file_cbfs_load_header(end_of_rom, &cbfs_header))
+ return;
+
+ start_of_rom = (u8 *)(end_of_rom + 1 - cbfs_header.rom_size);
+
+ file_cbfs_fill_cache(start_of_rom + cbfs_header.offset,
+ cbfs_header.rom_size, cbfs_header.align);
+ if (file_cbfs_result == CBFS_SUCCESS)
+ initialized = 1;
+}
+
+const struct cbfs_header *file_cbfs_get_header(void)
+{
+ if (initialized) {
+ file_cbfs_result = CBFS_SUCCESS;
+ return &cbfs_header;
+ } else {
+ file_cbfs_result = CBFS_NOT_INITIALIZED;
+ return NULL;
+ }
+}
+
+const struct cbfs_cachenode *file_cbfs_get_first(void)
+{
+ if (!initialized) {
+ file_cbfs_result = CBFS_NOT_INITIALIZED;
+ return NULL;
+ } else {
+ file_cbfs_result = CBFS_SUCCESS;
+ return file_cache;
+ }
+}
+
+void file_cbfs_get_next(const struct cbfs_cachenode **file)
+{
+ if (!initialized) {
+ file_cbfs_result = CBFS_NOT_INITIALIZED;
+ file = NULL;
+ return;
+ }
+
+ if (*file)
+ *file = (*file)->next;
+ file_cbfs_result = CBFS_SUCCESS;
+}
+
+const struct cbfs_cachenode *file_cbfs_find(const char *name)
+{
+ struct cbfs_cachenode *cache_node = file_cache;
+
+ if (!initialized) {
+ file_cbfs_result = CBFS_NOT_INITIALIZED;
+ return NULL;
+ }
+
+ while (cache_node) {
+ if (!strcmp(name, cache_node->name))
+ break;
+ cache_node = cache_node->next;
+ }
+ if (!cache_node)
+ file_cbfs_result = CBFS_FILE_NOT_FOUND;
+ else
+ file_cbfs_result = CBFS_SUCCESS;
+
+ return cache_node;
+}
+
+const struct cbfs_cachenode *file_cbfs_find_uncached(uintptr_t end_of_rom,
+ const char *name)
+{
+ u8 *start;
+ u32 size;
+ u32 align;
+ static struct cbfs_cachenode node;
+
+ if (file_cbfs_load_header(end_of_rom, &cbfs_header))
+ return NULL;
+
+ start = (u8 *)(end_of_rom + 1 - cbfs_header.rom_size);
+ size = cbfs_header.rom_size;
+ align = cbfs_header.align;
+
+ while (size >= align) {
+ int result;
+ u32 used;
+
+ result = file_cbfs_next_file(start, size, align, &node, &used);
+
+ if (result < 0)
+ return NULL;
+ else if (result == 0)
+ break;
+
+ if (!strcmp(name, node.name))
+ return &node;
+
+ size -= used;
+ start += used;
+ }
+ file_cbfs_result = CBFS_FILE_NOT_FOUND;
+ return NULL;
+}
+
+const char *file_cbfs_name(const struct cbfs_cachenode *file)
+{
+ file_cbfs_result = CBFS_SUCCESS;
+ return file->name;
+}
+
+u32 file_cbfs_size(const struct cbfs_cachenode *file)
+{
+ file_cbfs_result = CBFS_SUCCESS;
+ return file->data_length;
+}
+
+u32 file_cbfs_type(const struct cbfs_cachenode *file)
+{
+ file_cbfs_result = CBFS_SUCCESS;
+ return file->type;
+}
+
+long file_cbfs_read(const struct cbfs_cachenode *file, void *buffer,
+ unsigned long maxsize)
+{
+ u32 size;
+
+ size = file->data_length;
+ if (maxsize && size > maxsize)
+ size = maxsize;
+
+ memcpy(buffer, file->data, size);
+
+ file_cbfs_result = CBFS_SUCCESS;
+ return size;
+}
--- /dev/null
+/*
+ * 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
+ */
+
+#ifndef __CBFS_H
+#define __CBFS_H
+
+#include <compiler.h>
+#include <linux/compiler.h>
+
+enum cbfs_result {
+ CBFS_SUCCESS = 0,
+ CBFS_NOT_INITIALIZED,
+ CBFS_BAD_HEADER,
+ CBFS_BAD_FILE,
+ CBFS_FILE_NOT_FOUND
+};
+
+enum cbfs_filetype {
+ CBFS_TYPE_STAGE = 0x10,
+ CBFS_TYPE_PAYLOAD = 0x20,
+ CBFS_TYPE_OPTIONROM = 0x30,
+ CBFS_TYPE_BOOTSPLASH = 0x40,
+ CBFS_TYPE_RAW = 0x50,
+ CBFS_TYPE_VSA = 0x51,
+ CBFS_TYPE_MBI = 0x52,
+ CBFS_TYPE_MICROCODE = 0x53,
+ CBFS_COMPONENT_CMOS_DEFAULT = 0xaa,
+ CBFS_COMPONENT_CMOS_LAYOUT = 0x01aa
+};
+
+struct cbfs_header {
+ u32 magic;
+ u32 version;
+ u32 rom_size;
+ u32 boot_block_size;
+ u32 align;
+ u32 offset;
+ u32 pad[2];
+} __packed;
+
+struct cbfs_fileheader {
+ u8 magic[8];
+ u32 len;
+ u32 type;
+ u32 checksum;
+ u32 offset;
+} __packed;
+
+struct cbfs_cachenode {
+ struct cbfs_cachenode *next;
+ u32 type;
+ void *data;
+ u32 data_length;
+ char *name;
+ u32 name_length;
+ u32 checksum;
+} __packed;
+
+extern enum cbfs_result file_cbfs_result;
+
+/*
+ * Return a string describing the most recent error condition.
+ *
+ * @return A pointer to the constant string.
+ */
+const char *file_cbfs_error(void);
+
+/*
+ * Initialize the CBFS driver and load metadata into RAM.
+ *
+ * @param end_of_rom Points to the end of the ROM the CBFS should be read
+ * from.
+ */
+void file_cbfs_init(uintptr_t end_of_rom);
+
+/*
+ * Get the header structure for the current CBFS.
+ *
+ * @return A pointer to the constant structure, or NULL if there is none.
+ */
+const struct cbfs_header *file_cbfs_get_header(void);
+
+/*
+ * Get a handle for the first file in CBFS.
+ *
+ * @return A handle for the first file in CBFS, NULL on error.
+ */
+const struct cbfs_cachenode *file_cbfs_get_first(void);
+
+/*
+ * Get a handle to the file after this one in CBFS.
+ *
+ * @param file A pointer to the handle to advance.
+ */
+void file_cbfs_get_next(const struct cbfs_cachenode **file);
+
+/*
+ * Find a file with a particular name in CBFS.
+ *
+ * @param name The name to search for.
+ *
+ * @return A handle to the file, or NULL on error.
+ */
+const struct cbfs_cachenode *file_cbfs_find(const char *name);
+
+
+/***************************************************************************/
+/* All of the functions below can be used without first initializing CBFS. */
+/***************************************************************************/
+
+/*
+ * Find a file with a particular name in CBFS without using the heap.
+ *
+ * @param end_of_rom Points to the end of the ROM the CBFS should be read
+ * from.
+ * @param name The name to search for.
+ *
+ * @return A handle to the file, or NULL on error.
+ */
+const struct cbfs_cachenode *file_cbfs_find_uncached(uintptr_t end_of_rom,
+ const char *name);
+
+/*
+ * Get the name of a file in CBFS.
+ *
+ * @param file The handle to the file.
+ *
+ * @return The name of the file, NULL on error.
+ */
+const char *file_cbfs_name(const struct cbfs_cachenode *file);
+
+/*
+ * Get the size of a file in CBFS.
+ *
+ * @param file The handle to the file.
+ *
+ * @return The size of the file, zero on error.
+ */
+u32 file_cbfs_size(const struct cbfs_cachenode *file);
+
+/*
+ * Get the type of a file in CBFS.
+ *
+ * @param file The handle to the file.
+ *
+ * @return The type of the file, zero on error.
+ */
+u32 file_cbfs_type(const struct cbfs_cachenode *file);
+
+/*
+ * Read a file from CBFS into RAM
+ *
+ * @param file A handle to the file to read.
+ * @param buffer Where to read it into memory.
+ *
+ * @return If positive or zero, the number of characters read. If negative, an
+ * error occurred.
+ */
+long file_cbfs_read(const struct cbfs_cachenode *file, void *buffer,
+ unsigned long maxsize);
+
+#endif /* __CBFS_H */
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