/****************************************************************************
* try_convert_checksum_layout
*
* Perform sanity checking on CMOS checksum layout information and attempt to
* convert information from bit positions to byte positions. Return OK on
* success or an error code on failure.
****************************************************************************/
static void try_convert_checksum_layout(cmos_checksum_layout_t * layout)
{
switch (checksum_layout_to_bytes(layout)) {
case OK:
return;
case LAYOUT_SUMMED_AREA_START_NOT_ALIGNED:
fprintf(stderr,
"%s: CMOS checksummed area start is not byte-aligned.\n",
prog_name);
break;
case LAYOUT_SUMMED_AREA_END_NOT_ALIGNED:
fprintf(stderr,
"%s: CMOS checksummed area end is not byte-aligned.\n",
prog_name);
break;
case LAYOUT_CHECKSUM_LOCATION_NOT_ALIGNED:
fprintf(stderr,
"%s: CMOS checksum location is not byte-aligned.\n",
prog_name);
break;
case LAYOUT_INVALID_SUMMED_AREA:
fprintf(stderr,
"%s: CMOS checksummed area end must be greater than "
"CMOS checksummed area start.\n", prog_name);
break;
case LAYOUT_CHECKSUM_OVERLAPS_SUMMED_AREA:
fprintf(stderr,
"%s: CMOS checksum overlaps checksummed area.\n",
prog_name);
break;
case LAYOUT_SUMMED_AREA_OUT_OF_RANGE:
fprintf(stderr,
"%s: CMOS checksummed area out of range.\n", prog_name);
break;
case LAYOUT_CHECKSUM_LOCATION_OUT_OF_RANGE:
fprintf(stderr,
"%s: CMOS checksum location out of range.\n",
prog_name);
break;
default:
BUG();
}
exit(1);
}
/****************************************************************************
* set_checksum_info
*
* Set CMOS checksum information according to input parameters and perform
* sanity checking on input parameters.
****************************************************************************/
static void set_checksum_info(const char start_str[], const char end_str[],
const char index_str[])
{
cmos_checksum_layout_t layout;
/* These are bit positions that we want to convert to byte positions. */
layout.summed_area_start =
string_to_unsigned(start_str, "CMOS checksummed area start");
layout.summed_area_end =
string_to_unsigned(end_str, "CMOS checksummed area end");
layout.checksum_at =
string_to_unsigned(index_str, "CMOS checksum location");
switch (checksum_layout_to_bytes(&layout)) {
case OK:
break;
case LAYOUT_SUMMED_AREA_START_NOT_ALIGNED:
fprintf(stderr,
"%s: Error on line %d of CMOS layout file. CMOS "
"checksummed area start is not byte-aligned.\n",
prog_name, line_num);
goto fail;
case LAYOUT_SUMMED_AREA_END_NOT_ALIGNED:
fprintf(stderr,
"%s: Error on line %d of CMOS layout file. CMOS "
"checksummed area end is not byte-aligned.\n",
prog_name, line_num);
goto fail;
case LAYOUT_CHECKSUM_LOCATION_NOT_ALIGNED:
fprintf(stderr,
"%s: Error on line %d of CMOS layout file. CMOS "
"checksum location is not byte-aligned.\n", prog_name,
line_num);
goto fail;
case LAYOUT_INVALID_SUMMED_AREA:
fprintf(stderr,
"%s: Error on line %d of CMOS layout file. CMOS "
"checksummed area end must be greater than CMOS checksummed "
"area start.\n", prog_name, line_num);
goto fail;
case LAYOUT_CHECKSUM_OVERLAPS_SUMMED_AREA:
fprintf(stderr,
"%s: Error on line %d of CMOS layout file. CMOS "
"checksum overlaps checksummed area.\n", prog_name,
line_num);
goto fail;
case LAYOUT_SUMMED_AREA_OUT_OF_RANGE:
fprintf(stderr,
"%s: Error on line %d of CMOS layout file. CMOS "
"checksummed area out of range.\n", prog_name,
line_num);
goto fail;
case LAYOUT_CHECKSUM_LOCATION_OUT_OF_RANGE:
fprintf(stderr,
"%s: Error on line %d of CMOS layout file. CMOS "
"checksum location out of range.\n", prog_name,
line_num);
goto fail;
default:
BUG();
}
cmos_checksum_start = layout.summed_area_start;
cmos_checksum_end = layout.summed_area_end;
cmos_checksum_index = layout.checksum_at;
return;
fail:
exit(1);
}
