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-rw-r--r--util/cbfstool/common.c298
1 files changed, 298 insertions, 0 deletions
diff --git a/util/cbfstool/common.c b/util/cbfstool/common.c
new file mode 100644
index 0000000000..8db2d8cfe3
--- /dev/null
+++ b/util/cbfstool/common.c
@@ -0,0 +1,298 @@
+/*
+ * common utility functions for cbfstool
+ *
+ * Copyright (C) 2009 coresystems GmbH
+ * written by Patrick Georgi <patrick.georgi@coresystems.de>
+ *
+ * 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; version 2 of the License.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "common.h"
+#include "cbfs.h"
+#include "elf.h"
+
+#define dprintf
+
+void *loadfile(const char *filename, uint32_t * romsize_p, void *content,
+ int place)
+{
+ FILE *file = fopen(filename, "rb");
+ fseek(file, 0, SEEK_END);
+ *romsize_p = ftell(file);
+ fseek(file, 0, SEEK_SET);
+ if (!content)
+ content = malloc(*romsize_p);
+ else if (place == SEEK_END)
+ content -= *romsize_p;
+ if (!fread(content, *romsize_p, 1, file)) {
+ printf("failed to read %s\n", filename);
+ return NULL;
+ }
+ fclose(file);
+ return content;
+}
+
+struct cbfs_header *master_header;
+uint32_t phys_start, phys_end, align, romsize;
+void *offset;
+
+void recalculate_rom_geometry(void *romarea)
+{
+ offset = romarea + romsize - 0x100000000ULL;
+ master_header = (struct cbfs_header *)
+ phys_to_virt(*((uint32_t *) phys_to_virt(0xfffffffc)));
+ phys_start = (0 - romsize + ntohl(master_header->offset)) & 0xffffffff;
+ phys_end =
+ (0 - ntohl(master_header->bootblocksize) -
+ sizeof(struct cbfs_header)) & 0xffffffff;
+ align = ntohl(master_header->align);
+}
+
+void *loadrom(const char *filename)
+{
+ void *romarea = loadfile(filename, &romsize, 0, SEEK_SET);
+ recalculate_rom_geometry(romarea);
+ return romarea;
+}
+
+void writerom(const char *filename, void *start, uint32_t size)
+{
+ FILE *file = fopen(filename, "wb");
+ fwrite(start, size, 1, file);
+ fclose(file);
+}
+
+int cbfs_file_header(uint32_t physaddr)
+{
+ /* maybe improve this test */
+ return (strncmp(phys_to_virt(physaddr), "LARCHIVE", 8) == 0);
+}
+
+struct cbfs_file *cbfs_create_empty_file(uint32_t physaddr, uint32_t size)
+{
+ struct cbfs_file *nextfile = (struct cbfs_file *)phys_to_virt(physaddr);
+ strncpy(nextfile->magic, "LARCHIVE", 8);
+ nextfile->len = htonl(size);
+ nextfile->type = htonl(0xffffffff);
+ nextfile->checksum = 0; // FIXME?
+ nextfile->offset = htonl(sizeof(struct cbfs_file) + 16);
+ memset(((void *)nextfile) + sizeof(struct cbfs_file), 0, 16);
+ return nextfile;
+}
+
+int iself(unsigned char *input)
+{
+ Elf32_Ehdr *ehdr = (Elf32_Ehdr *) input;
+ return !memcmp(ehdr->e_ident, ELFMAG, 4);
+}
+
+struct filetypes_t {
+ uint32_t type;
+ const char *name;
+} filetypes[] = {
+ {CBFS_COMPONENT_STAGE, "stage"},
+ {CBFS_COMPONENT_PAYLOAD, "payload"},
+ {CBFS_COMPONENT_OPTIONROM, "optionrom"},
+ {CBFS_COMPONENT_DELETED, "deleted"},
+ {CBFS_COMPONENT_NULL, "null"}
+};
+
+const char *strfiletype(uint32_t number)
+{
+ int i;
+ for (i = 0; i < (sizeof(filetypes) / sizeof(struct filetypes_t)); i++)
+ if (filetypes[i].type == number)
+ return filetypes[i].name;
+ return "unknown";
+}
+
+uint64_t intfiletype(const char *name)
+{
+ int i;
+ for (i = 0; i < (sizeof(filetypes) / sizeof(struct filetypes_t)); i++)
+ if (strcmp(filetypes[i].name, name) == 0)
+ return filetypes[i].type;
+ return -1;
+}
+
+void print_cbfs_directory(const char *filename)
+{
+ printf
+ ("%s: %d kB, bootblocksize %d, romsize %d, offset 0x%x\nAlignment: %d bytes\n\n",
+ filename, romsize / 1024, ntohl(master_header->bootblocksize),
+ romsize, ntohl(master_header->offset), align);
+ printf("%-30s %-10s %-12s Size\n", "Name", "Offset", "Type");
+ uint32_t current = phys_start;
+ while (current < phys_end) {
+ if (!cbfs_file_header(current)) {
+ current += align;
+ continue;
+ }
+ struct cbfs_file *thisfile =
+ (struct cbfs_file *)phys_to_virt(current);
+ uint32_t length = ntohl(thisfile->len);
+ printf("%-30s 0x%-8x %-12s %d\n",
+ (const char *)(phys_to_virt(current) +
+ sizeof(struct cbfs_file)),
+ current - phys_start, strfiletype(ntohl(thisfile->type)),
+ length);
+ current =
+ ALIGN(current + ntohl(thisfile->len) +
+ ntohl(thisfile->offset), align);
+ }
+}
+
+int add_file_to_cbfs(void *content, uint32_t contentsize, uint32_t location)
+{
+ uint32_t current = phys_start;
+ while (current < phys_end) {
+ if (!cbfs_file_header(current)) {
+ current += align;
+ continue;
+ }
+ struct cbfs_file *thisfile =
+ (struct cbfs_file *)phys_to_virt(current);
+ uint32_t length = ntohl(thisfile->len);
+
+ dprintf("at %x, %x bytes\n", current, length);
+ /* Is this a free chunk? */
+ if ((thisfile->type == CBFS_COMPONENT_DELETED)
+ || (thisfile->type == CBFS_COMPONENT_NULL)) {
+ dprintf("null||deleted at %x, %x bytes\n", current,
+ length);
+ /* if this is the right size, and if specified, the right location, use it */
+ if ((contentsize <= length)
+ && ((location == 0) || (current == location))) {
+ if (contentsize < length) {
+ dprintf
+ ("this chunk is %x bytes, we need %x. create a new chunk at %x with %x bytes\n",
+ length, contentsize,
+ ALIGN(current + contentsize,
+ align),
+ length - contentsize);
+ uint32_t start =
+ ALIGN(current + contentsize, align);
+ uint32_t size =
+ current + ntohl(thisfile->offset)
+ + length - start - 16 -
+ sizeof(struct cbfs_file);
+ cbfs_create_empty_file(start, size);
+ }
+ dprintf("copying data\n");
+ memcpy(phys_to_virt(current), content,
+ contentsize);
+ break;
+ }
+ if (location == 0)
+ continue;
+
+ /* CBFS has the constraint that the chain always moves up in memory. so once
+ we're past the place we seek, we don't need to look any further */
+ if (current > location) {
+ printf
+ ("the requested space is not available\n");
+ return 1;
+ }
+
+ /* Is the requested location inside the current chunk? */
+ if ((current < location)
+ && ((location + contentsize) <= (current + length))) {
+ /* Split it up. In the next iteration the code will be at the right place. */
+ dprintf("split up. new length: %x\n",
+ location - current -
+ ntohl(thisfile->offset));
+ thisfile->len =
+ htonl(location - current -
+ ntohl(thisfile->offset));
+ struct cbfs_file *nextfile =
+ cbfs_create_empty_file(location,
+ length - (location -
+ current));
+ }
+ }
+ current =
+ ALIGN(current + ntohl(thisfile->len) +
+ ntohl(thisfile->offset), align);
+ }
+ return 0;
+}
+
+/* returns new data block with cbfs_file header, suitable to dump into the ROM. location returns
+ the new location that points to the cbfs_file header */
+void *create_cbfs_file(const char *filename, void *data, uint32_t * datasize,
+ uint32_t type, uint32_t * location)
+{
+ uint32_t filename_len = ALIGN(strlen(filename) + 1, 16);
+ uint32_t headersize = sizeof(struct cbfs_file) + filename_len;
+ if ((location != 0) && (*location != 0)) {
+ uint32_t offset = *location % align;
+ /* If offset >= (headersize % align), we can stuff the header into the offset.
+ Otherwise the header has to be aligned itself, and put before the offset data */
+ if (offset >= (headersize % align)) {
+ offset -= (headersize % align);
+ } else {
+ offset += align - (headersize % align);
+ }
+ headersize += offset;
+ *location -= headersize;
+ }
+ void *newdata = malloc(*datasize + headersize);
+ struct cbfs_file *nextfile = (struct cbfs_file *)newdata;
+ strncpy(nextfile->magic, "LARCHIVE", 8);
+ nextfile->len = htonl(*datasize);
+ nextfile->type = htonl(type);
+ nextfile->checksum = 0; // FIXME?
+ nextfile->offset = htonl(headersize);
+ strcpy(newdata + sizeof(struct cbfs_file), filename);
+ memcpy(newdata + headersize, data, *datasize);
+ *datasize += headersize;
+ return newdata;
+}
+
+int create_cbfs_image(const char *romfile, uint32_t _romsize,
+ const char *bootblock, uint32_t align)
+{
+ romsize = _romsize;
+ unsigned char *romarea = malloc(romsize);
+ memset(romarea, 0xff, romsize);
+ recalculate_rom_geometry(romarea);
+
+ if (align == 0)
+ align = 64;
+
+ uint32_t bootblocksize = 0;
+ loadfile(bootblock, &bootblocksize, romarea + romsize, SEEK_END);
+ struct cbfs_header *master_header =
+ (struct cbfs_header *)(romarea + romsize - bootblocksize -
+ sizeof(struct cbfs_header));
+ master_header->magic = ntohl(0x4f524243);
+ master_header->version = ntohl(0x31313131);
+ master_header->romsize = htonl(romsize);
+ master_header->bootblocksize = htonl(bootblocksize);
+ master_header->align = htonl(align);
+ master_header->offset = htonl(0);
+ ((uint32_t *) phys_to_virt(0xfffffffc))[0] =
+ virt_to_phys(master_header);
+ struct cbfs_file *one_empty_file =
+ cbfs_create_empty_file((0 - romsize) & 0xffffffff,
+ romsize - bootblocksize -
+ sizeof(struct cbfs_header) -
+ sizeof(struct cbfs_file) - 16);
+
+ writerom(romfile, romarea, romsize);
+ return 0;
+}
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