nvramtool: Use CMOS_SIZE for cmos size
We write CMOS data to 128 byte files, which is a problem when using them later-on (eg. as part of a coreboot image) where nvramtool assumes them to be 256 byte, and so data corruption occurs. Change-Id: Ibc919c95f6d522866b21fd313ceb023e73d09fb9 Signed-off-by: Patrick Georgi <patrick.georgi@secunet.com> Reviewed-on: http://review.coreboot.org/3186 Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
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@ -162,8 +162,8 @@ int main(int argc, char *argv[])
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exit(1);
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}
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if (fd_stat.st_size < 128) {
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lseek(fd, 127, SEEK_SET);
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if (fd_stat.st_size < CMOS_SIZE) {
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lseek(fd, CMOS_SIZE - 1, SEEK_SET);
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if (write(fd, "\0", 1) != 1) {
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fprintf(stderr, "Unable to extended '%s' to its full size.\n",
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nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_FILE].param);
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@ -176,7 +176,7 @@ int main(int argc, char *argv[])
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#endif
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}
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cmos_default = mmap(NULL, 128, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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cmos_default = mmap(NULL, CMOS_SIZE, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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if (cmos_default == MAP_FAILED) {
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fprintf(stderr, "Couldn't map '%s'\n", nvramtool_op_modifiers[NVRAMTOOL_MOD_USE_CMOS_FILE].param);
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exit(1);
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