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Implement libpayload support and improve life for DOS based flashrom, too

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Corresponding to flashrom svn r1181.

Change the physmap* behaviour to use (void*)-1 as error code instead
of NULL. That way, 1:1 mapped memory can be supported properly
because (void*)0 is not a magic pointer anymore.
(void*)-1 on the other hand is a rather unlikely memory offset, so that
should be safe.
  
Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
This commit is contained in:
Patrick Georgi
2010-09-25 22:53:44 +00:00
committed by Carl-Daniel Hailfinger
parent 0a6f9ca171
commit ed7a964786
3 changed files with 18 additions and 11 deletions
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4
cbtable.c
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@ -212,7 +212,7 @@ int coreboot_init(void)
start = 0x0;
#endif
table_area = physmap_try_ro("low megabyte", start, BYTES_TO_MAP - start);
if (!table_area) {
if (ERROR_PTR == table_area) {
msg_perr("Failed getting access to coreboot low tables.\n");
return -1;
}
@ -228,7 +228,7 @@ int coreboot_init(void)
start &= ~(getpagesize() - 1);
physunmap(table_area, BYTES_TO_MAP);
table_area = physmap_try_ro("high tables", start, BYTES_TO_MAP);
if (!table_area) {
if (ERROR_PTR == table_area) {
msg_perr("Failed getting access to coreboot "
"high tables.\n");
return -1;