diff options
Diffstat (limited to 'qemu/roms/ipxe/src/arch/i386/interface/pcbios/pcibios.c')
| -rw-r--r-- | qemu/roms/ipxe/src/arch/i386/interface/pcbios/pcibios.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/qemu/roms/ipxe/src/arch/i386/interface/pcbios/pcibios.c b/qemu/roms/ipxe/src/arch/i386/interface/pcbios/pcibios.c index 61873039f..34efa0b39 100644 --- a/qemu/roms/ipxe/src/arch/i386/interface/pcbios/pcibios.c +++ b/qemu/roms/ipxe/src/arch/i386/interface/pcbios/pcibios.c @@ -15,9 +15,13 @@ * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. + * + * You can also choose to distribute this program under the terms of + * the Unmodified Binary Distribution Licence (as given in the file + * COPYING.UBDL), provided that you have satisfied its requirements. */ -FILE_LICENCE ( GPL2_OR_LATER ); +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); #include <stdint.h> #include <ipxe/pci.h> @@ -38,7 +42,11 @@ static int pcibios_num_bus ( void ) { int discard_a, discard_D; uint8_t max_bus; - __asm__ __volatile__ ( REAL_CODE ( "stc\n\t" + /* We issue this call using flat real mode, to work around a + * bug in some HP BIOSes. + */ + __asm__ __volatile__ ( REAL_CODE ( "call flatten_real_mode\n\t" + "stc\n\t" "int $0x1a\n\t" "jnc 1f\n\t" "xorw %%cx, %%cx\n\t" |