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authorMark Brown <broonie@opensource.wolfsonmicro.com>2010-10-26 14:22:28 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-26 16:52:13 -0700
commit2473238eac95ba6dd2c4ba19cc36aaf01465076b (patch)
treed37e8964819ad33cfa99eb142fcf6a73facbb506 /firmware
parentb6777c40c79168d938c30b5b7471fbd64bca109c (diff)
downloadlinux-linaro-stable-2473238eac95ba6dd2c4ba19cc36aaf01465076b.tar.gz
ihex: add support for CS:IP/EIP records
ihex firmwares can include a jump address for starting execution. Add a -j option which will cause this to be written into the generated file as a record with address zero and data consisting of the address to jump to, allowing drivers to make use of this information. This format is chosen because it most closely follows the original ihex format, though it may make more sense to write a record with length zero and the address stored as the address. The records are not omitted by default since our ihex format does not include record type information and so including additional records may lead to confusion. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'firmware')
-rw-r--r--firmware/ihex2fw.c17
1 files changed, 14 insertions, 3 deletions
diff --git a/firmware/ihex2fw.c b/firmware/ihex2fw.c
index 5a03ba8c8364..ba0cf0b601bb 100644
--- a/firmware/ihex2fw.c
+++ b/firmware/ihex2fw.c
@@ -55,6 +55,7 @@ static int output_records(int outfd);
static int sort_records = 0;
static int wide_records = 0;
+static int include_jump = 0;
static int usage(void)
{
@@ -63,6 +64,7 @@ static int usage(void)
fprintf(stderr, "usage: ihex2fw [<options>] <src.HEX> <dst.fw>\n");
fprintf(stderr, " -w: wide records (16-bit length)\n");
fprintf(stderr, " -s: sort records by address\n");
+ fprintf(stderr, " -j: include records for CS:IP/EIP address\n");
return 1;
}
@@ -73,7 +75,7 @@ int main(int argc, char **argv)
uint8_t *data;
int opt;
- while ((opt = getopt(argc, argv, "ws")) != -1) {
+ while ((opt = getopt(argc, argv, "wsj")) != -1) {
switch (opt) {
case 'w':
wide_records = 1;
@@ -81,7 +83,9 @@ int main(int argc, char **argv)
case 's':
sort_records = 1;
break;
- default:
+ case 'j':
+ include_jump = 1;
+ break;
return usage();
}
}
@@ -128,6 +132,7 @@ static int process_ihex(uint8_t *data, ssize_t size)
{
struct ihex_binrec *record;
uint32_t offset = 0;
+ uint32_t data32;
uint8_t type, crc = 0, crcbyte = 0;
int i, j;
int line = 1;
@@ -223,8 +228,14 @@ next_record:
return -EINVAL;
}
+ memcpy(&data32, &record->data[0], sizeof(data32));
+ data32 = htonl(data32);
+ memcpy(&record->data[0], &data32, sizeof(data32));
+
/* These records contain the CS/IP or EIP where execution
- * starts. Don't really know what to do with them. */
+ * starts. If requested output this as a record. */
+ if (include_jump)
+ file_record(record);
goto next_record;
default: