New cbfstool. Works without mmap or fork/exec and

supports fixed location files. Some parts are salvaged
from the pre-commit version (esp. stage and payload creation),
others are completely rewritten (eg. the main loop that handles
file addition)

Also adapt newconfig (we don't need cbfs/tools anymore) and fix
some minor issues in the cbfstool-README.

Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>


git-svn-id: svn://svn.coreboot.org/coreboot/trunk@4630 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1

1 files changed, 194 insertions, 0 deletions

diff --git a/util/cbfstool/cbfs-mkpayload.c b/util/cbfstool/cbfs-mkpayload.c
new file mode 100644
index 0000000000..4f0e248123
--- /dev/null
+++ b/util/cbfstool/cbfs-mkpayload.c
@@ -0,0 +1,194 @@
+/*
+ * cbfs-mkpayload
+ *
+ * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net>
+ *               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 <unistd.h>
+#include "elf.h"
+#include <fcntl.h>
+#include <getopt.h>
+#include <sys/stat.h>
+#include <arpa/inet.h>
+
+#include "common.h"
+#include "cbfs.h"
+
+int parse_elf_to_payload(unsigned char *input, unsigned char **output,
+			 comp_algo algo)
+{
+	Elf32_Phdr *phdr;
+	Elf32_Ehdr *ehdr;
+	Elf32_Shdr *shdr;
+	char *header;
+	char *strtab;
+	unsigned char *sptr;
+	int headers;
+	int segments = 1;
+	int isize = 0, osize = 0;
+	int doffset = 0;
+	struct cbfs_payload_segment *segs;
+	int i;
+
+	comp_func_ptr compress = compression_function(algo);
+	if (!compress)
+		return -1;
+
+	ehdr = (Elf32_Ehdr *) input;
+	headers = ehdr->e_phnum;
+	header = (char *)ehdr;
+
+	phdr = (Elf32_Phdr *) & (header[ehdr->e_phoff]);
+	shdr = (Elf32_Shdr *) & (header[ehdr->e_shoff]);
+
+	strtab = &header[shdr[ehdr->e_shstrndx].sh_offset];
+
+	/* Count the number of headers - look for the .notes.pinfo
+	 * section */
+
+	for (i = 0; i < ehdr->e_shnum; i++) {
+		char *name;
+
+		if (i == ehdr->e_shstrndx)
+			continue;
+
+		if (shdr[i].sh_size == 0)
+			continue;
+
+		name = (char *)(strtab + shdr[i].sh_name);
+
+		if (!strcmp(name, ".note.pinfo"))
+			segments++;
+	}
+
+	/* Now, regular headers - we only care about PT_LOAD headers,
+	 * because thats what we're actually going to load
+	 */
+
+	for (i = 0; i < headers; i++) {
+		if (phdr[i].p_type != PT_LOAD)
+			continue;
+
+		/* Empty segments are never interesting */
+		if (phdr[i].p_memsz == 0)
+			continue;
+
+		isize += phdr[i].p_filesz;
+
+		segments++;
+	}
+
+	/* Allocate a block of memory to store the data in */
+
+	sptr =
+	    calloc((segments * sizeof(struct cbfs_payload_segment)) + isize, 1);
+	doffset = (segments * sizeof(struct cbfs_payload_segment));
+
+	if (sptr == NULL)
+		goto err;
+
+	segs = (struct cbfs_payload_segment *)sptr;
+	segments = 0;
+
+	for (i = 0; i < ehdr->e_shnum; i++) {
+		char *name;
+
+		if (i == ehdr->e_shstrndx)
+			continue;
+
+		if (shdr[i].sh_size == 0)
+			continue;
+
+		name = (char *)(strtab + shdr[i].sh_name);
+
+		if (!strcmp(name, ".note.pinfo")) {
+			segs[segments].type = PAYLOAD_SEGMENT_PARAMS;
+			segs[segments].load_addr = 0;
+			segs[segments].len = (unsigned int)shdr[i].sh_size;
+			segs[segments].offset = doffset;
+
+			memcpy((unsigned long *)(sptr + doffset),
+			       &header[shdr[i].sh_offset], shdr[i].sh_size);
+
+			doffset += segs[segments].len;
+			osize += segs[segments].len;
+
+			segments++;
+		}
+	}
+
+	for (i = 0; i < headers; i++) {
+		if (phdr[i].p_type != PT_LOAD)
+			continue;
+
+		if (phdr[i].p_memsz == 0)
+			continue;
+
+		if (phdr[i].p_filesz == 0) {
+			segs[segments].type = PAYLOAD_SEGMENT_BSS;
+			segs[segments].load_addr =
+			    (unsigned long long)htonl(phdr[i].p_paddr);
+			segs[segments].mem_len =
+			    (unsigned int)htonl(phdr[i].p_memsz);
+			segs[segments].offset = htonl(doffset);
+
+			segments++;
+			continue;
+		}
+
+		segs[segments].type = PAYLOAD_SEGMENT_DATA;
+		segs[segments].load_addr = (unsigned int)htonl(phdr[i].p_paddr);
+		segs[segments].mem_len = (unsigned int)htonl(phdr[i].p_memsz);
+		segs[segments].compression = htonl(algo);
+		segs[segments].offset = htonl(doffset);
+
+		int len;
+		compress((char *)&header[phdr[i].p_offset],
+			 phdr[i].p_filesz, (char *)(sptr + doffset), &len);
+		segs[segments].len = htonl(len);
+
+		/* If the compressed section is larger, then use the
+		   original stuff */
+
+		if ((unsigned int)len > phdr[i].p_filesz) {
+			segs[segments].compression = 0;
+			segs[segments].len = htonl(phdr[i].p_filesz);
+
+			memcpy((char *)(sptr + doffset),
+			       &header[phdr[i].p_offset], phdr[i].p_filesz);
+		}
+
+		doffset += ntohl(segs[segments].len);
+		osize += ntohl(segs[segments].len);
+
+		segments++;
+	}
+
+	segs[segments].type = PAYLOAD_SEGMENT_ENTRY;
+	segs[segments++].load_addr = (unsigned long long)htonl(ehdr->e_entry);
+
+	*output = sptr;
+
+	return (segments * sizeof(struct cbfs_payload_segment)) + osize;
+
+      err:
+	return -1;
+}