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Separate out pxe_start_nbp() from pxe_image.c into pxe_call.c

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Implement PXENV_RESTART_TFTP.
This commit is contained in:
Michael Brown
2007-06-30 14:56:35 +01:00
parent acd598b4f9
commit 8130443f9f
5 changed files with 46 additions and 65 deletions
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23
src/arch/i386/image/pxe_image.c
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@@ -30,12 +30,6 @@
#include <gpxe/segment.h>
#include <gpxe/netdevice.h>
/** PXE load address segment */
#define PXE_LOAD_SEGMENT 0
/** PXE load address offset */
#define PXE_LOAD_OFFSET 0x7c00
struct image_type pxe_image_type __image_type ( PROBE_PXE );
/**
@@ -46,8 +40,6 @@ struct image_type pxe_image_type __image_type ( PROBE_PXE );
*/
static int pxe_exec ( struct image *image __unused ) {
struct net_device *netdev;
int discard_b, discard_c;
uint16_t rc;
/* Ensure that PXE stack is ready to use */
pxe_init_structures();
@@ -59,20 +51,7 @@ static int pxe_exec ( struct image *image __unused ) {
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"
"addw $4, %%sp\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;
return pxe_start_nbp();
}
/**