[config] Make PXE stack a compile-time option

[people/pcmattman/gpxe.git] / src / arch / i386 / prefix / romprefix.S

diff --git a/src/arch/i386/prefix/romprefix.S b/src/arch/i386/prefix/romprefix.S
index d695fd9..952eccd 100644 (file)
--- a/src/arch/i386/prefix/romprefix.S
+++ b/src/arch/i386/prefix/romprefix.S
@@ -126,6 +126,7 @@ prodstr_pci_id:
        .size prodstr, . - prodstr
 
        .globl  undiheader      
+       .weak   undiloader
 undiheader:
        .ascii  "UNDI"                  /* Signature */
        .byte   undiheader_len          /* Length of structure */
@@ -495,6 +496,7 @@ init_message_done:
  *
  * May be either within option ROM space, or within PMM-allocated block.
  */
+       .globl  image_source
 image_source:
        .long   0
        .size   image_source, . - image_source
@@ -503,6 +505,7 @@ image_source:
  *
  * May be either at HIGHMEM_LOADPOINT, or within PMM-allocated block.
  */
+       .globl  decompress_to
 decompress_to:
        .long   HIGHMEM_LOADPOINT
        .size   decompress_to, . - decompress_to
@@ -644,50 +647,6 @@ exec_message:
        .asciz  " starting execution\n"
        .size exec_message, . - exec_message
 
-/* UNDI loader
- *
- * Called by an external program to load our PXE stack.
- */
-undiloader:
-       /* Save registers */
-       pushl   %esi
-       pushl   %edi
-       pushw   %ds
-       pushw   %es
-       pushw   %bx
-       /* ROM segment address to %ds */
-       pushw   %cs
-       popw    %ds
-       /* UNDI loader parameter structure address into %es:%di */
-       movw    %sp, %bx
-       movw    %ss:18(%bx), %di
-       movw    %ss:20(%bx), %es
-       /* Install to specified real-mode addresses */
-       pushw   %di
-       movw    %es:12(%di), %bx
-       movw    %es:14(%di), %ax
-       movl    image_source, %esi
-       movl    decompress_to, %edi
-       call    install_prealloc
-       popw    %di
-       /* Call UNDI loader C code */
-       pushl   $pxe_loader_call
-       pushw   %cs
-       pushw   $1f
-       pushw   %ax
-       pushw   $prot_call
-       lret
-1:     popw    %bx     /* discard */
-       popw    %bx     /* discard */
-       /* Restore registers and return */
-       popw    %bx
-       popw    %es
-       popw    %ds
-       popl    %edi
-       popl    %esi
-       lret
-       .size undiloader, . - undiloader
-
 /* Wait for key press specified by %bl (masked by %bh)
  *
  * Used by init and INT19 code when prompting user.  If the specified