mirror of
https://github.com/xcat2/xcat-dep.git
synced 2024-11-22 17:41:51 +00:00
127 lines
3.6 KiB
Diff
127 lines
3.6 KiB
Diff
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diff -urN gpxe-0.9.7/src/arch/i386/prefix/pxeprefix.S gpxe-0.9.7-etherbootworkaround/src/arch/i386/prefix/pxeprefix.S
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--- gpxe-0.9.7/src/arch/i386/prefix/pxeprefix.S 2009-03-01 21:23:42.000000000 -0500
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+++ gpxe-0.9.7-etherbootworkaround/src/arch/i386/prefix/pxeprefix.S 2009-08-21 20:36:55.000000000 -0400
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@@ -1,8 +1,11 @@
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#define PXENV_UNDI_SHUTDOWN 0x0005
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#define PXENV_UNDI_GET_NIC_TYPE 0x0012
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+#define PXENV_UNDI_GET_IFACE_INFO 0x0013
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#define PXENV_STOP_UNDI 0x0015
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#define PXENV_UNLOAD_STACK 0x0070
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+#define PXE_HACK_EB54 0x0001
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+
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.text
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.arch i386
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.org 0
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@@ -11,6 +14,8 @@
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#include <undi.h>
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#define STACK_MAGIC ( 'L' + ( 'R' << 8 ) + ( 'E' << 16 ) + ( 'T' << 24 ) )
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+#define EB_MAGIC_1 ( 'E' + ( 't' << 8 ) + ( 'h' << 16 ) + ( 'e' << 24 ) )
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+#define EB_MAGIC_2 ( 'r' + ( 'b' << 8 ) + ( 'o' << 16 ) + ( 'o' << 24 ) )
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/*****************************************************************************
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* Entry point: set operating context, print welcome message
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@@ -309,8 +314,6 @@
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movw $10f, %si
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call print_message
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call print_pci_busdevfn
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- movb $0x0a, %al
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- call print_character
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jmp 99f
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.section ".prefix.data", "aw", @progbits
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10: .asciz " UNDI device is PCI "
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@@ -321,12 +324,47 @@
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movw $10f, %si
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call print_message
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.section ".prefix.data", "aw", @progbits
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-10: .asciz " Unable to determine UNDI physical device\n"
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+10: .asciz " Unable to determine UNDI physical device"
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.previous
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99:
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/*****************************************************************************
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+ * Determine interface type
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+ *****************************************************************************
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+ */
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+get_iface_type:
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+ /* Issue PXENV_UNDI_GET_IFACE_INFO */
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+ movw $PXENV_UNDI_GET_IFACE_INFO, %bx
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+ call pxe_call
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+ jnc 1f
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+ call print_pxe_error
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+ jmp 99f
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+1: /* Print interface type */
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+ movw $10f, %si
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+ call print_message
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+ leaw ( pxe_parameter_structure + 0x02 ), %si
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+ call print_message
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+ .section ".prefix.data", "aw", @progbits
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+10: .asciz ", type "
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+ .previous
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+ /* Check for "Etherboot" interface type */
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+ cmpl $EB_MAGIC_1, ( pxe_parameter_structure + 0x02 )
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+ jne 99f
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+ cmpl $EB_MAGIC_2, ( pxe_parameter_structure + 0x06 )
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+ jne 99f
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+ movw $10f, %si
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+ call print_message
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+ .section ".prefix.data", "aw", @progbits
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+10: .asciz " (workaround enabled)"
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+ .previous
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+ /* Flag Etherboot workarounds as required */
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+ orw $PXE_HACK_EB54, pxe_hacks
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+
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+99: movb $0x0a, %al
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+ call print_character
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+
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+/*****************************************************************************
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* Leave NIC in a safe state
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*****************************************************************************
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*/
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@@ -339,6 +377,14 @@
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call print_pxe_error
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1:
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unload_base_code:
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+ /* Etherboot treats PXENV_UNLOAD_STACK as PXENV_STOP_UNDI, so
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+ * we must not issue this call if the underlying stack is
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+ * Etherboot and we were not intending to issue a PXENV_STOP_UNDI.
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+ */
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+#ifdef PXELOADER_KEEP_UNDI
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+ testw $PXE_HACK_EB54, pxe_hacks
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+ jnz 99f
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+#endif /* PXELOADER_KEEP_UNDI */
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/* Issue PXENV_UNLOAD_STACK */
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movw $PXENV_UNLOAD_STACK, %bx
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call pxe_call
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@@ -551,7 +597,9 @@
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testw %ax, %ax
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jz 1f
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stc
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-1: /* Restore registers and return */
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+1: /* Clear direction flag, for the sake of sanity */
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+ cld
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+ /* Restore registers and return */
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popw %es
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popw %di
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ret
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@@ -595,7 +643,7 @@
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pxe_esp: .long 0
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pxe_ss: .word 0
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-pxe_parameter_structure: .fill 20
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+pxe_parameter_structure: .fill 64
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undi_code_segoff:
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undi_code_size: .word 0
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@@ -605,6 +653,8 @@
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undi_data_size: .word 0
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undi_data_segment: .word 0
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+pxe_hacks: .word 0
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+
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/* The following fields are part of a struct undi_device */
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undi_device:
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