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- Fix poor resource allocation estimate. 

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1066 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Eric Biederman 2003-08-04 19:54:48 +00:00
parent dfa26a4d8c
commit bbb6d1020f
1 changed files with 5 additions and 1 deletions
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6
src/devices/device.c
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@ -217,8 +217,12 @@ void compute_allocate_resource(
if (resource->flags & IORESOURCE_IO) { if (resource->flags & IORESOURCE_IO) {
/* Don't allow potential aliases over the /* Don't allow potential aliases over the
* legacy pci expansion card addresses. * legacy pci expansion card addresses.
* The legacy pci decodes only 10 bits,
* uses 100h - 3ffh. Therefor, only 0 - ff
* can be used out of each 400h block of io
* space.
*/ */
if ((base > 0x3ff) && ((base & 0x300) != 0)) { if ((base & 0x300) != 0) {
base = (base & ~0x3ff) + 0x400; base = (base & ~0x3ff) + 0x400;
} }
/* Don't allow allocations in the VGA IO range. /* Don't allow allocations in the VGA IO range.