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Select a PXE network device before starting PXE NBP.

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Move pxe_boot() code to pxe_image.c
This commit is contained in:
Michael Brown
2007-01-14 02:20:10 +00:00
parent 98240d99f0
commit 7bc03d37a2
4 changed files with 64 additions and 59 deletions
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32
src/arch/i386/image/pxe_image.c
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@@ -23,10 +23,12 @@
*
*/
#include <pxe.h>
#include <pxe_call.h>
#include <gpxe/uaccess.h>
#include <gpxe/image.h>
#include <gpxe/segment.h>
#include <pxe_call.h>
#include <gpxe/netdevice.h>
/** PXE load address segment */
#define PXE_LOAD_SEGMENT 0
@@ -43,7 +45,33 @@ struct image_type pxe_image_type __image_type ( PROBE_PXE );
* @ret rc Return status code
*/
static int pxe_exec ( struct image *image __unused ) {
return pxe_boot();
struct net_device *netdev;
int discard_b, discard_c;
uint16_t rc;
/* Ensure that PXE stack is ready to use */
pxe_init_structures();
pxe_hook_int1a();
/* Arbitrarily pick the first open network device to use for PXE */
for_each_netdev ( netdev ) {
pxe_netdev = netdev;
break;
}
/* Far call to PXE NBP */
__asm__ __volatile__ ( REAL_CODE ( "pushw %%cx\n\t"
"pushw %%ax\n\t"
"movw %%cx, %%es\n\t"
"lcall $0, $0x7c00\n\t" )
: "=a" ( rc ), "=b" ( discard_b ),
"=c" ( discard_c )
: "a" ( & __from_text16 ( ppxe ) ),
"b" ( & __from_text16 ( pxenv ) ),
"c" ( rm_cs )
: "edx", "esi", "edi", "ebp", "memory" );
return rc;
}
/**