diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/arch/i386/interface/pxe/pxe_call.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/arch/i386/interface/pxe/pxe_call.c b/src/arch/i386/interface/pxe/pxe_call.c index 104313666..2d89cc4d4 100644 --- a/src/arch/i386/interface/pxe/pxe_call.c +++ b/src/arch/i386/interface/pxe/pxe_call.c @@ -265,6 +265,9 @@ struct init_fn pxe_init_fn __init_fn ( INIT_NORMAL ) = { * @v netdev Net device to use as PXE net device */ void pxe_activate ( struct net_device *netdev ) { + uint32_t discard_a; + uint32_t discard_b; + uint32_t discard_d; /* Ensure INT 1A is hooked */ if ( ! int_1a_hooked ) { @@ -276,6 +279,15 @@ void pxe_activate ( struct net_device *netdev ) { /* Set PXE network device */ pxe_set_netdev ( netdev ); + + /* Notify BIOS of installation */ + __asm__ __volatile__ ( REAL_CODE ( "pushw %%cs\n\t" + "popw %%es\n\t" + "int $0x1a\n\t" ) + : "=a" ( discard_a ), "=b" ( discard_b ), + "=d" ( discard_d ) + : "0" ( 0x564e ), + "1" ( __from_text16 ( &pxenv ) ) ); } /** |