v2/util: romfs -> cbfs rename

It's all sed here. romfs->cbfs, ROMFS->CBFS, romtool->cbfstool

Signed-off-by: Peter Stuge <peter@stuge.se>
Acked-by: Ronald G. Minnich <rminnich@gmail.com>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4110 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 168 insertions, 0 deletions

diff --git a/util/cbfstool/resize.c b/util/cbfstool/resize.c
new file mode 100644
index 0000000000..157515619c
--- /dev/null
+++ b/util/cbfstool/resize.c
@@ -0,0 +1,168 @@
+/*
+ * cbfstool
+ *
+ * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
+ *
+ * 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 <ctype.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+#include "cbfstool.h"
+
+void resize_usage(void)
+{
+	printf("resize [SIZE] [ERASEBLOCK]\tResize the ROM\n");
+}
+
+int resize_handler(struct rom *rom, int argc, char **argv)
+{
+	unsigned int size, align, offset;
+	char null = '\0';
+	int bootblocksize = ntohl(rom->header->bootblocksize);
+
+	if (argc < 1) {
+		resize_usage();
+		return -1;
+	}
+
+	if (rom->fd <= 0) {
+		ERROR("ROM file %s does not exist\n", rom->name);
+		return -1;
+	}
+
+	align = ntohl(rom->header->align);
+	size = get_size(argv[0]);
+
+	if (argc >= 2)
+		align = strtoul(argv[1], NULL, 0);
+
+	if (size == rom->size && align == ntohl(rom->header->align)) {
+		ERROR("New parameters are the same as the old\n");
+		return 0;
+	}
+
+	if (size < bootblocksize) {
+		ERROR("The new size is smaller then the bootblock size\n");
+		return -1;
+	}
+
+	/* if the current ROM is too big for the new size, then complain */
+
+	if (rom_used_space(rom) > size -  bootblocksize) {
+		ERROR("The new size is too small for the current ROM\n");
+		return -1;
+	}
+
+	/* Grow the rom if we need to */
+
+	if (size > rom->size) {
+		munmap(rom->ptr, rom->size);
+
+		lseek(rom->fd, size - 1, SEEK_SET);
+		write(rom->fd, &null, 1);
+
+		rom->ptr = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED,
+				rom->fd, 0);
+
+		if (rom->ptr == MAP_FAILED) {
+			ERROR("Unable to grow the ROM\n");
+			return -1;
+		}
+	}
+
+	/* We only have to rewrite the entries if the alignment changed */
+
+	if (align != ntohl(rom->header->align)) {
+		struct cbfs_file *c;
+
+		/* The first entry doesn't have to move */
+
+		c = rom_find(rom, rom->header->offset);
+		offset = rom->header->offset;
+
+		while (c) {
+			struct cbfs_file *n = rom_find_next(rom, c);
+			unsigned int next;
+
+			if (n == NULL)
+				break;
+
+			/* Calculate a new location for the entry */
+			next =
+			    ROM_OFFSET(rom,
+				       c) + ALIGN(ntohl(c->offset) +
+						  ntohl(c->len), align);
+
+			/* Copy the next entry there */
+			memmove(ROM_PTR(rom, next), n,
+				ntohl(n->offset) + ntohl(n->len));
+
+			c = (struct cbfs_file *)ROM_PTR(rom, next);
+
+			/* If the previous header wasn't overwritten by the change,
+			   corrupt the header so we don't accidently find it */
+
+			if (ROM_OFFSET(rom, n) >
+			    next + ntohl(c->len) + ntohl(c->offset))
+				memset(n->magic, 0, sizeof(n->magic));
+		}
+	}
+
+	/* Copy the bootblock */
+
+	memmove(rom->ptr + size -  bootblocksize,
+		rom->ptr + rom->size -  bootblocksize,  bootblocksize);
+
+	/* Recacluate the location of the header */
+
+	offset = ROM_READL(rom, size - 12);
+
+	rom->header = (struct cbfs_header *)
+	    ROM_PTR(rom, size - (0xFFFFFFFF - offset) - 1);
+
+	/* Put the new values in the header */
+	rom->header->romsize = htonl(size);
+	rom->header->align = htonl(align);
+
+	/* Truncate the file if we have to */
+
+	if (size < rom->size) {
+		munmap(rom->ptr, rom->size);
+
+		rom->ptr = NULL;
+
+		if (ftruncate(rom->fd, size)) {
+			ERROR("Unable to truncate the ROM\n");
+			return -1;
+		}
+
+		rom->ptr = mmap(0, size, PROT_READ | PROT_WRITE, MAP_SHARED,
+				rom->fd, 0);
+
+		if (rom->ptr == MAP_FAILED) {
+			ERROR("Unable to truncate the ROM\n");
+			return -1;
+		}
+	}
+
+	rom->size = size;
+	rom->fssize = size -  bootblocksize;
+
+	return 0;
+}