Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / arch / i386 / prefix / nbiprefix.S

diff --git a/qemu/roms/ipxe/src/arch/i386/prefix/nbiprefix.S b/qemu/roms/ipxe/src/arch/i386/prefix/nbiprefix.S
new file mode 100644 (file)
index 0000000..06e7df5
--- /dev/null
+++ b/qemu/roms/ipxe/src/arch/i386/prefix/nbiprefix.S
@@ -0,0 +1,82 @@
+       .text
+       .arch i386
+       .code16
+       .section ".prefix", "ax", @progbits
+       .org 0
+
+nbi_header:
+       
+/*****************************************************************************
+ * NBI file header
+ *****************************************************************************
+ */
+file_header:
+       .long   0x1b031336      /* Signature */
+       .byte   0x04            /* 16 bytes header, no vendor info */
+       .byte   0
+       .byte   0
+       .byte   0               /* No flags */
+       .word   0x0000, 0x07c0  /* Load header to 0x07c0:0x0000 */
+       .word   _nbi_start, 0x07c0      /* Start execution at 0x07c0:entry */
+       .size   file_header, . - file_header
+
+/*****************************************************************************
+ * NBI segment header
+ *****************************************************************************
+ */
+segment_header:
+       .byte   0x04            /* 16 bytes header, no vendor info */
+       .byte   0
+       .byte   0
+       .byte   0x04            /* Last segment */
+       .long   0x00007e00
+imglen:        .long   -512
+memlen:        .long   -512
+       .size   segment_header, . - segment_header
+
+       .section ".zinfo.fixup", "a", @progbits /* Compressor fixups */
+       .ascii  "ADDL"
+       .long   imglen
+       .long   1
+       .long   0
+       .ascii  "ADDL"
+       .long   memlen
+       .long   1
+       .long   0
+       .previous
+
+/*****************************************************************************
+ * NBI entry point
+ *****************************************************************************
+ */
+       .globl  _nbi_start
+_nbi_start:
+       /* Install iPXE */
+       call    install
+
+       /* Set up real-mode stack */
+       movw    %bx, %ss
+       movw    $_estack16, %sp
+
+       /* Jump to .text16 segment */
+       pushw   %ax
+       pushw   $1f
+       lret
+       .section ".text16", "awx", @progbits
+1:
+       pushl   $main
+       pushw   %cs
+       call    prot_call
+       popl    %ecx /* discard */
+
+       /* Uninstall iPXE */
+       call    uninstall
+
+       /* Reboot system */
+       int $0x19
+
+       .previous
+       .size   _nbi_start, . - _nbi_start
+
+nbi_header_end:
+       .org 512