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-rw-r--r--util/cbfstool/Makefile14
-rw-r--r--util/cbfstool/Makefile.inc1
-rw-r--r--util/cbfstool/cbfs-mkstage.c347
-rw-r--r--util/cbfstool/cbfs_image.c26
-rw-r--r--util/cbfstool/common.c51
-rw-r--r--util/cbfstool/common.h32
-rw-r--r--util/cbfstool/compress.c2
-rw-r--r--util/cbfstool/fit.c8
-rw-r--r--util/cbfstool/xdr.c140
9 files changed, 505 insertions, 116 deletions
diff --git a/util/cbfstool/Makefile b/util/cbfstool/Makefile
index 3aa5edc718..5e4fdcbd7b 100644
--- a/util/cbfstool/Makefile
+++ b/util/cbfstool/Makefile
@@ -1,13 +1,19 @@
obj ?= $(shell pwd)
-HOSTCC ?= gcc
-CFLAGS ?= -g -Wall -Werror
-CFLAGS += -D_7ZIP_ST
+HOSTCC ?= gcc
+CFLAGS ?= -g
+CFLAGS += -D_7ZIP_ST
+CFLAGS += -Wall -Wundef -Wstrict-prototypes -Wmissing-prototypes
+CFLAGS += -Wwrite-strings -Wredundant-decls -Wno-trigraphs
+CFLAGS += -Wstrict-aliasing -Werror
+# You're going to have to fix the LzmaEnc.c first -- it's horrible.
+# CFLAGS += -Wshadow
+LDFLAGS += -g
BINARY:=$(obj)/cbfstool
COMMON:=cbfstool.o common.o cbfs_image.o compress.o fit.o
-COMMON+=cbfs-mkstage.o cbfs-mkpayload.o
+COMMON+=cbfs-mkstage.o cbfs-mkpayload.o xdr.o
# LZMA
COMMON+=lzma/lzma.o
COMMON+=lzma/C/LzFind.o lzma/C/LzmaDec.o lzma/C/LzmaEnc.o
diff --git a/util/cbfstool/Makefile.inc b/util/cbfstool/Makefile.inc
index fc120f3b22..4270d750cc 100644
--- a/util/cbfstool/Makefile.inc
+++ b/util/cbfstool/Makefile.inc
@@ -5,6 +5,7 @@ cbfsobj += compress.o
cbfsobj += cbfs_image.o
cbfsobj += cbfs-mkstage.o
cbfsobj += cbfs-mkpayload.o
+cbfsobj += xdr.o
cbfsobj += fit.o
# LZMA
cbfsobj += lzma.o
diff --git a/util/cbfstool/cbfs-mkstage.c b/util/cbfstool/cbfs-mkstage.c
index dfc93c20e9..5c8014f072 100644
--- a/util/cbfstool/cbfs-mkstage.c
+++ b/util/cbfstool/cbfs-mkstage.c
@@ -28,46 +28,204 @@
#include "cbfs.h"
#include "elf.h"
-static unsigned int idemp(unsigned int x)
-{
- return x;
-}
+/*
+ * Short form: this is complicated, but we've tried making it simple
+ * and we keep hitting problems with our ELF parsing.
+ *
+ * The ELF parsing situation has always been a bit tricky. In fact,
+ * we (and most others) have been getting it wrong in small ways for
+ * years. Recently this has caused real trouble for the ARM V8 build.
+ * In this file we attempt to finally get it right for all variations
+ * of endian-ness and word size and target architectures and
+ * architectures we might get run on. Phew!. To do this we borrow a
+ * page from the FreeBSD NFS xdr model (see elf_ehdr and elf_phdr),
+ * the Plan 9 endianness functions (see xdr.c), and Go interfaces (see
+ * how we use buffer structs in this file). This ends up being a bit
+ * wordy at the lowest level, but greatly simplifies the elf parsing
+ * code and removes a common source of bugs, namely, forgetting to
+ * flip type endianness when referencing a struct member.
+ *
+ * ELF files can have four combinations of data layout: 32/64, and
+ * big/little endian. Further, to add to the fun, depending on the
+ * word size, the size of the ELF structs varies. The coreboot SELF
+ * format is simpler in theory: it's supposed to be always BE, and the
+ * various struct members allow room for growth: the entry point is
+ * always 64 bits, for example, so the size of a SELF struct is
+ * constant, regardless of target architecture word size. Hence, we
+ * need to do some transformation of the ELF files.
+ *
+ * A given architecture, realistically, only supports one of the four
+ * combinations at a time as the 'native' format. Hence, our code has
+ * been sprinkled with every variation of [nh]to[hn][sll] over the
+ * years. We've never quite gotten it all right, however, and a quick
+ * pass over this code revealed another bug. It's all worked because,
+ * until now, all the working platforms that had CBFS were 32 LE. Even then,
+ * however, bugs crept in: we recently realized that we're not
+ * transforming the entry point to big format when we store into the
+ * SELF image.
+ *
+ * The problem is essentially an XDR operation:
+ * we have something in a foreign format and need to transform it.
+ * It's most like XDR because:
+ * 1) the byte order can be wrong
+ * 2) the word size can be wrong
+ * 3) the size of elements in the stream depends on the value
+ * of other elements in the stream
+ * it's not like XDR because:
+ * 1) the byte order can be right
+ * 2) the word size can be right
+ * 3) the struct members are all on a natural alignment
+ *
+ * Hence, this new approach. To cover word size issues, we *always*
+ * transform the two structs we care about, the file header and
+ * program header, into a native struct in the 64 bit format:
+ *
+ * [32,little] -> [Elf64_Ehdr, Elf64_Phdr]
+ * [64,little] -> [Elf64_Ehdr, Elf64_Phdr]
+ * [32,big] -> [Elf64_Ehdr, Elf64_Phdr]
+ * [64,big] -> [Elf64_Ehdr, Elf64_Phdr]
+ * Then we just use those structs, and all the need for inline ntoh* goes away,
+ * as well as all the chances for error.
+ * This works because all the SELF structs have fields large enough for
+ * the largest ELF 64 struct members, and all the Elf64 struct members
+ * are at least large enough for all ELF 32 struct members.
+ * We end up with one function to do all our ELF parsing, and two functions
+ * to transform the headers. For the put case, we also have
+ * XDR functions, and hopefully we'll never again spend 5 years with the
+ * wrong endian-ness on an output value :-)
+ * This should work for all word sizes and endianness we hope to target.
+ * I *really* don't want to be here for 128 bit addresses.
+ *
+ * The parse functions are called with a pointer to an input buffer
+ * struct. One might ask: are there enough bytes in the input buffer?
+ * We know there need to be at *least* sizeof(Elf32_Ehdr) +
+ * sizeof(Elf32_Phdr) bytes. Realistically, there has to be some data
+ * too. If we start to worry, though we have not in the past, we
+ * might apply the simple test: the input buffer needs to be at least
+ * sizeof(Elf64_Ehdr) + sizeof(Elf64_Phdr) bytes because, even if it's
+ * ELF 32, there's got to be *some* data! This is not theoretically
+ * accurate but it is actually good enough in practice. It allows the
+ * header transformation code to ignore the possibility of underrun.
+ *
+ * We also must accomodate different ELF files, and hence formats,
+ * in the same cbfs invocation. We might load a 64-bit payload
+ * on a 32-bit machine; we might even have a mixed armv7/armv8
+ * SOC or even a system with an x86/ARM!
+ *
+ * A possibly problematic (though unlikely to be so) assumption
+ * is that we expect the BIOS to remain in the lowest 32 bits
+ * of the physical address space. Since ARMV8 has standardized
+ * on that, and x86_64 also has, this seems a safe assumption.
+ *
+ * To repeat, ELF structs are different sizes because ELF struct
+ * members are different sizes, depending on values in the ELF file
+ * header. For this we use the functions defined in xdr.c, which
+ * consume bytes, convert the endianness, and advance the data pointer
+ * in the buffer struct.
+ */
-/* This is a wrapper around the swab32() macro to make it
- * usable for the current implementation of parse_elf_to_stage()
+/* Get the ident array, so we can figure out
+ * endian-ness, word size, and in future other useful
+ * parameters
*/
-static unsigned int swap32(unsigned int x)
+static void
+elf_eident(struct buffer *input, Elf64_Ehdr *ehdr)
{
- return swab32(x);
+ memmove(ehdr->e_ident, input->data, sizeof(ehdr->e_ident));
+ input->data += sizeof(ehdr->e_ident);
+ input->size -= sizeof(ehdr->e_ident);
}
-unsigned int (*elf32_to_native) (unsigned int) = idemp;
-/* returns size of result, or -1 if error */
-int parse_elf_to_stage(const struct buffer *input, struct buffer *output,
- comp_algo algo, uint32_t *location)
+static void
+elf_ehdr(struct buffer *input, Elf64_Ehdr *ehdr, struct xdr *xdr, int bit64)
{
- Elf32_Phdr *phdr;
- Elf32_Ehdr *ehdr = (Elf32_Ehdr *)input->data;
- char *header, *buffer;
-
- int headers;
- int i;
- struct cbfs_stage *stage;
- unsigned int data_start, data_end, mem_end;
+ ehdr->e_type = xdr->get16(input);
+ ehdr->e_machine = xdr->get16(input);
+ ehdr->e_version = xdr->get32(input);
+ if (bit64){
+ ehdr->e_entry = xdr->get64(input);
+ ehdr->e_phoff = xdr->get64(input);
+ ehdr->e_shoff = xdr->get64(input);
+ } else {
+ ehdr->e_entry = xdr->get32(input);
+ ehdr->e_phoff = xdr->get32(input);
+ ehdr->e_shoff = xdr->get32(input);
+ }
+ ehdr->e_flags = xdr->get32(input);
+ ehdr->e_ehsize = xdr->get16(input);
+ ehdr->e_phentsize = xdr->get16(input);
+ ehdr->e_phnum = xdr->get16(input);
+ ehdr->e_shentsize = xdr->get16(input);
+ ehdr->e_shnum = xdr->get16(input);
+ ehdr->e_shstrndx = xdr->get16(input);
+}
- int elf_bigendian = 0;
+static void
+elf_phdr(struct buffer *pinput, Elf64_Phdr *phdr,
+ int entsize, struct xdr *xdr, int bit64)
+{
+ /*
+ * The entsize need not be sizeof(*phdr).
+ * Hence, it is easier to keep a copy of the input,
+ * as the xdr functions may not advance the input
+ * pointer the full entsize; rather than get tricky
+ * we just advance it below.
+ */
+ struct buffer input = *pinput;
+ if (bit64){
+ phdr->p_type = xdr->get32(&input);
+ phdr->p_flags = xdr->get32(&input);
+ phdr->p_offset = xdr->get64(&input);
+ phdr->p_vaddr = xdr->get64(&input);
+ phdr->p_paddr = xdr->get64(&input);
+ phdr->p_filesz = xdr->get64(&input);
+ phdr->p_memsz = xdr->get64(&input);
+ phdr->p_align = xdr->get64(&input);
+ } else {
+ phdr->p_type = xdr->get32(&input);
+ phdr->p_offset = xdr->get32(&input);
+ phdr->p_vaddr = xdr->get32(&input);
+ phdr->p_paddr = xdr->get32(&input);
+ phdr->p_filesz = xdr->get32(&input);
+ phdr->p_memsz = xdr->get32(&input);
+ phdr->p_flags = xdr->get32(&input);
+ phdr->p_align = xdr->get32(&input);
+ }
+ pinput->size -= entsize;
+ pinput->data += entsize;
+}
- comp_func_ptr compress = compression_function(algo);
- if (!compress)
- return -1;
+/* Get the headers from the buffer.
+ * Return -1 in the event of an error.
+ */
+static int
+elf_headers(const struct buffer *pinput, Elf64_Ehdr *ehdr, Elf64_Phdr **pphdr)
+{
+ int i;
+ struct xdr *xdr = &xdr_le;
+ int bit64 = 0;
+ struct buffer input = *(struct buffer *)pinput;
+ struct buffer phdr_buf;
+ Elf64_Phdr *phdr;
- DEBUG("start: parse_elf_to_stage(location=0x%x)\n", *location);
- if (!iself((unsigned char *)input->data)) {
+ if (!iself((unsigned char *)pinput->data)) {
ERROR("The stage file is not in ELF format!\n");
return -1;
}
+ elf_eident(&input, ehdr);
+ bit64 = ehdr->e_ident[EI_CLASS] == ELFCLASS64;
+ /* Assume LE unless we are sure otherwise.
+ * We're not going to take on the task of
+ * fully validating the ELF file. That way
+ * lies madness.
+ */
+ if (ehdr->e_ident[EI_DATA] == ELFDATA2MSB)
+ xdr = &xdr_be;
+
+ elf_ehdr(&input, ehdr, xdr, bit64);
+
// The tool may work in architecture-independent way.
if (arch != CBFS_ARCHITECTURE_UNKNOWN &&
!((ehdr->e_machine == EM_ARM) && (arch == CBFS_ARCHITECTURE_ARMV7)) &&
@@ -76,42 +234,84 @@ int parse_elf_to_stage(const struct buffer *input, struct buffer *output,
return -1;
}
- if (ehdr->e_ident[EI_DATA] == ELFDATA2MSB) {
- elf_bigendian = 1;
+ if (pinput->size < ehdr->e_phoff){
+ ERROR("The program header offset is greater than "
+ "the remaining file size."
+ "%ld bytes left, program header offset is %ld \n",
+ pinput->size, ehdr->e_phoff);
+ return -1;
}
- if (elf_bigendian != is_big_endian()) {
- elf32_to_native = swap32;
+ /* cons up an input buffer for the headers.
+ * Note that the program headers can be anywhere,
+ * per the ELF spec, You'd be surprised how many ELF
+ * readers miss this little detail.
+ */
+ phdr_buf.data = &pinput->data[ehdr->e_phoff];
+ phdr_buf.size = ehdr->e_phentsize * ehdr->e_phnum;
+ if (phdr_buf.size > (pinput->size - ehdr->e_phoff)){
+ ERROR("The file is not large enough for the program headers."
+ "%ld bytes left, %ld bytes of headers\n",
+ pinput->size - ehdr->e_phoff, phdr_buf.size);
+ return -1;
}
+ /* gather up all the phdrs.
+ * We do them all at once because there is more
+ * than one loop over all the phdrs.
+ */
+ phdr = calloc(sizeof(*phdr), ehdr->e_phnum);
+ for (i = 0; i < ehdr->e_phnum; i++)
+ elf_phdr(&phdr_buf, &phdr[i], ehdr->e_phentsize, xdr, bit64);
+ *pphdr = phdr;
+ return 0;
+}
- headers = ehdr->e_phnum;
- header = (char *)ehdr;
+/* returns size of result, or -1 if error.
+ * Note that, with the new code, this function
+ * works for all elf files, not just the restricted set.
+ */
+int parse_elf_to_stage(const struct buffer *input, struct buffer *output,
+ comp_algo algo, uint32_t *location)
+{
+ Elf64_Phdr *phdr;
+ Elf64_Ehdr ehdr;
+ char *buffer;
+ struct buffer outheader;
- phdr = (Elf32_Phdr *) & header[elf32_to_native(ehdr->e_phoff)];
+ int headers;
+ int i, outlen;
+ uint32_t data_start, data_end, mem_end;
- /* Now, regular headers - we only care about PT_LOAD headers,
- * because thats what we're actually going to load
- */
+ comp_func_ptr compress = compression_function(algo);
+ if (!compress)
+ return -1;
+
+ DEBUG("start: parse_elf_to_stage(location=0x%x)\n", *location);
+
+ if (elf_headers(input, &ehdr, &phdr) < 0)
+ return -1;
+
+ headers = ehdr.e_phnum;
- data_start = 0xFFFFFFFF;
+ data_start = ~0;
data_end = 0;
mem_end = 0;
for (i = 0; i < headers; i++) {
unsigned int start, mend, rend;
- if (elf32_to_native(phdr[i].p_type) != PT_LOAD)
+ if (phdr[i].p_type != PT_LOAD)
continue;
/* Empty segments are never interesting */
- if (elf32_to_native(phdr[i].p_memsz) == 0)
+ if (phdr[i].p_memsz == 0)
continue;
/* BSS */
- start = elf32_to_native(phdr[i].p_paddr);
+ start = phdr[i].p_paddr;
- mend = start + elf32_to_native(phdr[i].p_memsz);
- rend = start + elf32_to_native(phdr[i].p_filesz);
+ mend = start + phdr[i].p_memsz;
+ rend = start + phdr[i].p_filesz;
if (start < data_start)
data_start = start;
@@ -128,8 +328,9 @@ int parse_elf_to_stage(const struct buffer *input, struct buffer *output,
}
if (data_end <= data_start) {
- ERROR("data ends before it starts. Make sure the "
- "ELF file is correct and resides in ROM space.\n");
+ ERROR("data ends (%08lx) before it starts (%08lx). Make sure "
+ "the ELF file is correct and resides in ROM space.\n",
+ (unsigned long)data_end, (unsigned long)data_start);
exit(1);
}
@@ -146,25 +347,39 @@ int parse_elf_to_stage(const struct buffer *input, struct buffer *output,
for (i = 0; i < headers; i++) {
unsigned int l_start, l_offset = 0;
- if (elf32_to_native(phdr[i].p_type) != PT_LOAD)
+ if (phdr[i].p_type != PT_LOAD)
continue;
- if (elf32_to_native(phdr[i].p_memsz) == 0)
+ if (phdr[i].p_memsz == 0)
continue;
- l_start = elf32_to_native(phdr[i].p_paddr);
+ l_start = phdr[i].p_paddr;
if (l_start < *location) {
l_offset = *location - l_start;
l_start = *location;
}
+ /* A legal ELF file can have a program header with
+ * non-zero length but zero-length file size and a
+ * non-zero offset which, added together, are > than
+ * input->size (i.e. the total file size). So we need
+ * to not even test in the case that p_filesz is zero.
+ */
+ if (! phdr[i].p_filesz)
+ continue;
+ if (input->size < (phdr[i].p_offset + phdr[i].p_filesz)){
+ ERROR("Underflow copying out the segment."
+ "File has %ld bytes left, segment end is %ld\n",
+ input->size, phdr[i].p_offset + phdr[i].p_filesz);
+ return -1;
+ }
memcpy(buffer + (l_start - data_start),
- &header[elf32_to_native(phdr[i].p_offset)+l_offset],
- elf32_to_native(phdr[i].p_filesz)-l_offset);
+ &input->data[phdr[i].p_offset + l_offset],
+ phdr[i].p_filesz - l_offset);
}
/* Now make the output buffer */
- if (buffer_create(output, sizeof(*stage) + data_end - data_start,
+ if (buffer_create(output, sizeof(struct cbfs_stage) + data_end - data_start,
input->name) != 0) {
ERROR("Unable to allocate memory: %m\n");
free(buffer);
@@ -172,19 +387,31 @@ int parse_elf_to_stage(const struct buffer *input, struct buffer *output,
}
memset(output->data, 0, output->size);
- stage = (struct cbfs_stage *)output->data;
-
- stage->load = data_start; /* FIXME: htonll */
- stage->memlen = mem_end - data_start;
- stage->compression = algo;
- stage->entry = ehdr->e_entry; /* FIXME: htonll */
-
- compress(buffer, data_end - data_start, (output->data + sizeof(*stage)),
- (int *)&stage->len);
+ /* Compress the data, at which point we'll know information
+ * to fill out the header. This seems backward but it works because
+ * - the output header is a known size (not always true in many xdr's)
+ * - we do need to know the compressed output size first
+ */
+ compress(buffer, data_end - data_start,
+ (output->data + sizeof(struct cbfs_stage)),
+ &outlen);
free(buffer);
+ /* Set up for output marshaling. */
+ outheader.data = output->data;
+ outheader.size = 0;
+ /* N.B. The original plan was that SELF data was B.E.
+ * but: this is all L.E.
+ * Maybe we should just change the spec.
+ */
+ xdr_le.put32(&outheader, algo);
+ xdr_le.put64(&outheader, ehdr.e_entry);
+ xdr_le.put64(&outheader, data_start);
+ xdr_le.put32(&outheader, outlen);
+ xdr_le.put32(&outheader, mem_end - data_start);
+
if (*location)
*location -= sizeof(struct cbfs_stage);
- output->size = sizeof(*stage) + stage->len;
+ output->size = sizeof(struct cbfs_stage) + outlen;
return 0;
}
diff --git a/util/cbfstool/cbfs_image.c b/util/cbfstool/cbfs_image.c
index 401654e999..2cd0c7a5a9 100644
--- a/util/cbfstool/cbfs_image.c
+++ b/util/cbfstool/cbfs_image.c
@@ -69,7 +69,7 @@ static uint32_t align_up(uint32_t value, uint32_t align)
return value;
}
-uint32_t lookup_type_by_name(const struct typedesc_t *desc, const char *name,
+static uint32_t lookup_type_by_name(const struct typedesc_t *desc, const char *name,
uint32_t default_value)
{
int i;
@@ -79,7 +79,7 @@ uint32_t lookup_type_by_name(const struct typedesc_t *desc, const char *name,
return default_value;
}
-const char *lookup_name_by_type(const struct typedesc_t *desc, uint32_t type,
+static const char *lookup_name_by_type(const struct typedesc_t *desc, uint32_t type,
const char *default_value)
{
int i;
@@ -139,7 +139,7 @@ static int cbfs_fix_legacy_size(struct cbfs_image *image)
}
int cbfs_image_create(struct cbfs_image *image,
- uint32_t arch,
+ uint32_t myarch,
size_t size,
uint32_t align,
struct buffer *bootblock,
@@ -206,7 +206,7 @@ int cbfs_image_create(struct cbfs_image *image,
header->bootblocksize = htonl(bootblock->size);
header->align = htonl(align);
header->offset = htonl(entries_offset);
- header->architecture = htonl(arch);
+ header->architecture = htonl(myarch);
// Prepare entries
if (align_up(entries_offset, align) != entries_offset) {
@@ -356,10 +356,10 @@ int cbfs_add_entry(struct cbfs_image *image, struct buffer *buffer,
if (IS_TOP_ALIGNED_ADDRESS(content_offset)) {
// legacy cbfstool takes top-aligned address.
- uint32_t romsize = ntohl(image->header->romsize);
+ uint32_t theromsize = ntohl(image->header->romsize);
INFO("Converting top-aligned address 0x%x to offset: 0x%x\n",
- content_offset, content_offset + romsize);
- content_offset += romsize;
+ content_offset, content_offset + theromsize);
+ content_offset += theromsize;
}
// Merge empty entries.
@@ -488,7 +488,7 @@ int cbfs_export_entry(struct cbfs_image *image, const char *entry_name,
buffer.data = CBFS_SUBHEADER(entry);
buffer.size = ntohl(entry->len);
- buffer.name = "(cbfs_export_entry)";
+ buffer.name = (char *)"(cbfs_export_entry)";
if (buffer_write_file(&buffer, filename) != 0) {
ERROR("Failed to write %s into %s.\n",
entry_name, filename);
@@ -793,16 +793,6 @@ int cbfs_is_valid_entry(struct cbfs_image *image, struct cbfs_file *entry)
sizeof(entry->magic)) == 0);
}
-int cbfs_init_entry(struct cbfs_file *entry,
- struct buffer *buffer)
-{
- memset(entry, 0, sizeof(*entry));
- memcpy(entry->magic, CBFS_FILE_MAGIC, sizeof(entry->magic));
- entry->len = htonl(buffer->size);
- entry->offset = htonl(sizeof(*entry) + strlen(buffer->name) + 1);
- return 0;
-}
-
int cbfs_create_empty_entry(struct cbfs_image *image, struct cbfs_file *entry,
size_t len, const char *name)
{
diff --git a/util/cbfstool/common.c b/util/cbfstool/common.c
index 03345df1eb..8f38a4a27d 100644
--- a/util/cbfstool/common.c
+++ b/util/cbfstool/common.c
@@ -144,10 +144,13 @@ void *loadfile(const char *filename, uint32_t * romsize_p, void *content,
return content;
}
-static struct cbfs_header *master_header;
+/* N.B.: there are declarations here that were shadowed in functions.
+ * Hence the rather clumsy cbfstool_ prefixes.
+ */
+static struct cbfs_header *cbfstool_master_header;
static uint32_t phys_start, phys_end, align;
uint32_t romsize;
-void *offset;
+void *cbfstool_offset;
uint32_t arch = CBFS_ARCHITECTURE_UNKNOWN;
static struct {
@@ -194,19 +197,19 @@ int find_master_header(void *romarea, size_t size)
{
size_t offset;
- if (master_header)
+ if (cbfstool_master_header)
return 0;
for (offset = 0; offset < size - sizeof(struct cbfs_header); offset++) {
struct cbfs_header *tmp = romarea + offset;
if (tmp->magic == ntohl(CBFS_HEADER_MAGIC)) {
- master_header = tmp;
+ cbfstool_master_header = tmp;
break;
}
}
- return master_header ? 0 : 1;
+ return cbfstool_master_header ? 0 : 1;
}
void recalculate_rom_geometry(void *romarea)
@@ -217,25 +220,25 @@ void recalculate_rom_geometry(void *romarea)
}
/* Update old headers */
- if (master_header->version == CBFS_HEADER_VERSION1 &&
- ntohl(master_header->architecture) == CBFS_ARCHITECTURE_UNKNOWN) {
+ if (cbfstool_master_header->version == CBFS_HEADER_VERSION1 &&
+ ntohl(cbfstool_master_header->architecture) == CBFS_ARCHITECTURE_UNKNOWN) {
DEBUG("Updating CBFS master header to version 2\n");
- master_header->architecture = htonl(CBFS_ARCHITECTURE_X86);
+ cbfstool_master_header->architecture = htonl(CBFS_ARCHITECTURE_X86);
}
- arch = ntohl(master_header->architecture);
+ arch = ntohl(cbfstool_master_header->architecture);
switch (arch) {
case CBFS_ARCHITECTURE_ARMV7:
- offset = romarea;
- phys_start = (0 + ntohl(master_header->offset)) & 0xffffffff;
+ cbfstool_offset = romarea;
+ phys_start = (0 + ntohl(cbfstool_master_header->offset)) & 0xffffffff;
phys_end = romsize & 0xffffffff;
break;
case CBFS_ARCHITECTURE_X86:
- offset = romarea + romsize - 0x100000000ULL;
- phys_start = (0 - romsize + ntohl(master_header->offset)) &
+ cbfstool_offset = romarea + romsize - 0x100000000ULL;
+ phys_start = (0 - romsize + ntohl(cbfstool_master_header->offset)) &
0xffffffff;
- phys_end = (0 - ntohl(master_header->bootblocksize) -
+ phys_end = (0 - ntohl(cbfstool_master_header->bootblocksize) -
sizeof(struct cbfs_header)) & 0xffffffff;
break;
default:
@@ -243,7 +246,7 @@ void recalculate_rom_geometry(void *romarea)
exit(1);
}
- align = ntohl(master_header->align);
+ align = ntohl(cbfstool_master_header->align);
}
void *loadrom(const char *filename)
@@ -351,8 +354,8 @@ void print_cbfs_directory(const char *filename)
printf
("%s: %d kB, bootblocksize %d, romsize %d, offset 0x%x\n"
"alignment: %d bytes, architecture: %s\n\n",
- basename(name), romsize / 1024, ntohl(master_header->bootblocksize),
- romsize, ntohl(master_header->offset), align, arch_to_string(arch));
+ basename(name), romsize / 1024, ntohl(cbfstool_master_header->bootblocksize),
+ romsize, ntohl(cbfstool_master_header->offset), align, arch_to_string(arch));
free(name);
printf("%-30s %-10s %-12s Size\n", "Name", "Offset", "Type");
uint32_t current = phys_start;
@@ -364,12 +367,12 @@ void print_cbfs_directory(const char *filename)
struct cbfs_file *thisfile =
(struct cbfs_file *)phys_to_virt(current);
uint32_t length = ntohl(thisfile->len);
- char *fname = (char *)(phys_to_virt(current) + sizeof(struct cbfs_file));
+ const char *fname = (char *)(phys_to_virt(current) + sizeof(struct cbfs_file));
if (strlen(fname) == 0)
fname = "(empty)";
printf("%-30s 0x%-8x %-12s %d\n", fname,
- current - phys_start + ntohl(master_header->offset),
+ current - phys_start + ntohl(cbfstool_master_header->offset),
strfiletype(ntohl(thisfile->type)), length);
/* note the components of the subheader are in host order ... */
@@ -664,7 +667,7 @@ void *create_cbfs_file(const char *filename, void *data, uint32_t * datasize,
}
int create_cbfs_image(const char *romfile, uint32_t _romsize,
- const char *bootblock, uint32_t align, uint32_t offs)
+ const char *bootblock, uint32_t create_align, uint32_t offs)
{
uint32_t bootblocksize = 0;
struct cbfs_header *master_header;
@@ -679,8 +682,8 @@ int create_cbfs_image(const char *romfile, uint32_t _romsize,
}
memset(romarea, 0xff, romsize);
- if (align == 0)
- align = 64;
+ if (create_align == 0)
+ create_align = 64;
bootblk = loadfile(bootblock, &bootblocksize,
romarea + romsize, SEEK_END);
@@ -695,7 +698,7 @@ int create_cbfs_image(const char *romfile, uint32_t _romsize,
switch (arch) {
case CBFS_ARCHITECTURE_ARMV7:
/* Set up physical/virtual mapping */
- offset = romarea;
+ cbfstool_offset = romarea;
/*
* The initial jump instruction and bootblock will be placed
@@ -746,7 +749,7 @@ int create_cbfs_image(const char *romfile, uint32_t _romsize,
case CBFS_ARCHITECTURE_X86:
// Set up physical/virtual mapping
- offset = romarea + romsize - 0x100000000ULL;
+ cbfstool_offset = romarea + romsize - 0x100000000ULL;
loadfile(bootblock, &bootblocksize, romarea + romsize,
SEEK_END);
diff --git a/util/cbfstool/common.h b/util/cbfstool/common.h
index 6e12fcb064..ed75a7fd02 100644
--- a/util/cbfstool/common.h
+++ b/util/cbfstool/common.h
@@ -62,7 +62,7 @@ int buffer_write_file(struct buffer *buffer, const char *filename);
/* Destroys a memory buffer. */
void buffer_delete(struct buffer *buffer);
-extern void *offset;
+extern void *cbfstool_offset;
extern uint32_t romsize;
extern int host_bigendian;
extern uint32_t arch;
@@ -72,12 +72,12 @@ uint32_t string_to_arch(const char *arch_string);
static inline void *phys_to_virt(uint32_t addr)
{
- return offset + addr;
+ return cbfstool_offset + addr;
}
static inline uint32_t virt_to_phys(void *addr)
{
- return (unsigned long)(addr - offset) & 0xffffffff;
+ return (unsigned long)(addr - cbfstool_offset) & 0xffffffff;
}
#define ALIGN(val, by) (((val) + (by)-1)&~((by)-1))
@@ -124,7 +124,6 @@ int add_file_to_cbfs(void *content, uint32_t contentsize, uint32_t location);
int remove_file_from_cbfs(const char *filename);
void print_cbfs_directory(const char *filename);
int extract_file_from_cbfs(const char *filename, const char *payloadname, const char *outpath);
-int remove_file_from_cbfs(const char *filename);
uint32_t cbfs_find_location(const char *romfile, uint32_t filesize,
const char *filename, uint32_t align);
@@ -132,5 +131,30 @@ uint32_t cbfs_find_location(const char *romfile, uint32_t filesize,
void print_supported_filetypes(void);
#define ARRAY_SIZE(a) (int)(sizeof(a) / sizeof((a)[0]))
+/* lzma/lzma.c */
+void do_lzma_compress(char *in, int in_len, char *out, int *out_len);
+void do_lzma_uncompress(char *dst, int dst_len, char *src, int src_len);
+/* xdr.c */
+struct xdr {
+ uint16_t (*get16)(struct buffer *input);
+ uint32_t (*get32)(struct buffer *input);
+ uint64_t (*get64)(struct buffer *input);
+ void (*put16)(struct buffer *input, uint16_t val);
+ void (*put32)(struct buffer *input, uint32_t val);
+ void (*put64)(struct buffer *input, uint64_t val);
+};
+
+/* common.c */
+
+int find_master_header(void *romarea, size_t size);
+void recalculate_rom_geometry(void *romarea);
+const char *strfiletype(uint32_t number);
+
+/* cbfs_image.c */
+uint32_t get_cbfs_entry_type(const char *name, uint32_t default_value);
+const char *get_cbfs_entry_type_name(uint32_t type);
+uint32_t get_cbfs_compression(const char *name, uint32_t unknown);
+
+extern struct xdr xdr_le, xdr_be;
#endif
diff --git a/util/cbfstool/compress.c b/util/cbfstool/compress.c
index 9ea1487ff9..38fa03dbed 100644
--- a/util/cbfstool/compress.c
+++ b/util/cbfstool/compress.c
@@ -26,8 +26,6 @@
#include <stdio.h>
#include "common.h"
-void do_lzma_compress(char *in, int in_len, char *out, int *out_len);
-
static void lzma_compress(char *in, int in_len, char *out, int *out_len)
{
do_lzma_compress(in, in_len, out, out_len);
diff --git a/util/cbfstool/fit.c b/util/cbfstool/fit.c
index c76ba480ad..f15ccf510b 100644
--- a/util/cbfstool/fit.c
+++ b/util/cbfstool/fit.c
@@ -104,9 +104,9 @@ static inline int fit_entry_type(struct fit_entry *entry)
* in the host address space at [4G - romsize -> 4G). It also assume all
* pointers have values within this address range.
*/
-static inline int ptr_to_offset(uint32_t romsize, uint32_t host_ptr)
+static inline int ptr_to_offset(uint32_t theromsize, uint32_t host_ptr)
{
- return (int)(romsize + host_ptr);
+ return (int)(theromsize + host_ptr);
}
/*
@@ -114,9 +114,9 @@ static inline int ptr_to_offset(uint32_t romsize, uint32_t host_ptr)
* in the host address space at [4G - romsize -> 4G). It also assume all
* pointers have values within this address range.
*/
-static inline uint32_t offset_to_ptr(uint32_t romsize, int offset)
+static inline uint32_t offset_to_ptr(uint32_t theromsize, int offset)
{
- return -(romsize - (uint32_t )offset);
+ return -(theromsize - (uint32_t )offset);
}
static struct fit_table *locate_fit_table(struct cbfs_image *image)
diff --git a/util/cbfstool/xdr.c b/util/cbfstool/xdr.c
new file mode 100644
index 0000000000..d779675cd5
--- /dev/null
+++ b/util/cbfstool/xdr.c
@@ -0,0 +1,140 @@
+ /*
+ * cbfstool, CLI utility for CBFS file manipulation
+ *
+ * Copyright 2013 Google Inc.
+ *
+ * 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 <ctype.h>
+#include <unistd.h>
+#include <stdint.h>
+#include "common.h"
+
+/* The assumption in all this code is that we're given a pointer to enough data.
+ * Hence, we do not check for underflow.
+ */
+static uint8_t get8(struct buffer *input)
+{
+ uint8_t ret = *input->data++;
+ input->size--;
+ return ret;
+}
+
+static uint16_t get16be(struct buffer *input)
+{
+ uint16_t ret;
+ ret = get8(input) << 8;
+ ret |= get8(input);
+ return ret;
+}
+
+static uint32_t get32be(struct buffer *input)
+{
+ uint32_t ret;
+ ret = get16be(input) << 16;
+ ret |= get16be(input);
+ return ret;
+}
+
+static uint64_t get64be(struct buffer *input)
+{
+ uint64_t ret;
+ ret = get32be(input);
+ ret <<= 32;
+ ret |= get32be(input);
+ return ret;
+}
+
+static void put8(struct buffer *input, uint8_t val)
+{
+ input->data[input->size] = val;
+ input->size++;
+}
+
+static void put16be(struct buffer *input, uint16_t val)
+{
+ put8(input, val >> 8);
+ put8(input, val);
+}
+
+static void put32be(struct buffer *input, uint32_t val)
+{
+ put16be(input, val >> 16);
+ put16be(input, val);
+}
+
+static void put64be(struct buffer *input, uint64_t val)
+{
+ put32be(input, val >> 32);
+ put32be(input, val);
+}
+
+static uint16_t get16le(struct buffer *input)
+{
+ uint16_t ret;
+ ret = get8(input);
+ ret |= get8(input) << 8;
+ return ret;
+}
+
+static uint32_t get32le(struct buffer *input)
+{
+ uint32_t ret;
+ ret = get16le(input);
+ ret |= get16le(input) << 16;
+ return ret;
+}
+
+static uint64_t get64le(struct buffer *input)
+{
+ uint64_t ret;
+ uint32_t low;
+ low = get32le(input);
+ ret = get32le(input);
+ ret <<= 32;
+ ret |= low;
+ return ret;
+}
+
+static void put16le(struct buffer *input, uint16_t val)
+{
+ put8(input, val);
+ put8(input, val >> 8);
+}
+
+static void put32le(struct buffer *input, uint32_t val)
+{
+ put16le(input, val);
+ put16le(input, val >> 16);
+}
+
+static void put64le(struct buffer *input, uint64_t val)
+{
+ put32le(input, val);
+ put32le(input, val >> 32);
+}
+
+struct xdr xdr_be = {
+ get16be, get32be, get64be,
+ put16be, put32be, put64be
+};
+
+struct xdr xdr_le = {
+ get16le, get32le, get64le,
+ put16le, put32le, put64le
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-26 02:08:05 +0000