OSDev.org

Code: Select all

;Input
; ES:BX		Address of the PXENV+ structure (obsolete)
; SS:SP+4	Address of the !PXE structure

START:
        clr ax
        mov ds,ax                               ;Set DS segment register

        mov [PXENVplusOffset],bx                ;Set offset for PXENV+ structure
        mov [PXENVplusSeg],es                   ;Set segment for PXENV+ structure

        cmp sp,0xFFFC                           ;Is SP sane?
        ja .badSPforPXE                         ; no

        mov bp,sp
        mov ax,[bp+4]                           ;ax = offset for !PXE structure
        mov cx,[bp+6]                           ;cx = segment for !PXE structure
        mov [PXEoffset],ax                      ;Set offset for !PXE structure
        mov [PXEseg],cx                         ;Set segment for !PXE structure
.badSPforPXE:

Code: Select all

   Real mode (Int 1Ah Function 5650h)

Enter:
   AX := 5650h (VP)

Exit:
   AX := 564Eh (VN)
   ES := 16-bit segment address of the PXENV+ structure.
   BX := 16-bit offset of the PXENV+.
   EDX := may be trashed by the UNDI INT 1Ah handler.
   All other register contents are preserved.
   CF is cleared.
   IF is preserved.
   All other flags are undefined.

Code: Select all

        ORG 0x7C00

        BITS 16

START:
    mov ax,0xB800                 ;ax = segment for video display memory (text mode assumed)
    mov ds,ax                     ;ax = segment for video display memory
    mov dword [0],0x12345678      ;Trash the top left 2 characters on the screen
.die:
    jmp .die                      ;Lock up

Code: Select all

authoritative;

# Use this to send dhcp log messages to a different log file (you also
# have to hack syslog.conf to complete the redirection).
log-facility local7;

# DHCP configuration file for DHCP ISC 3.0

ddns-update-style none;

default-lease-time 86400;
max-lease-time 86400;
deny unknown-clients;


# Definition of PXE-specific options
# Code 1: Multicast IP address of boot file server
# Code 2: UDP port that client should monitor for MTFTP responses
# Code 3: UDP port that MTFTP servers are using to listen for MTFTP requests
# Code 4: Number of seconds a client must listen for activity before trying
#         to start a new MTFTP transfer
# Code 5: Number of seconds a client must listen before trying to restart
#         a MTFTP transfer

option space PXE;
option PXE.mtftp-ip               code 1 = ip-address;
option PXE.mtftp-cport            code 2 = unsigned integer 16;
option PXE.mtftp-sport            code 3 = unsigned integer 16;
option PXE.mtftp-tmout            code 4 = unsigned integer 8;
option PXE.mtftp-delay            code 5 = unsigned integer 8;
option PXE.discovery-control      code 6 = unsigned integer 8;
option PXE.discovery-mcast-addr   code 7 = ip-address;

next-server 10.0.0.2;


subnet 10.0.0.0 netmask 255.255.255.0 {

  class "pxeclients" {
    match if substring (option vendor-class-identifier, 0, 9) = "PXEClient";
    option vendor-class-identifier "PXEClient";
    vendor-option-space PXE;

    # At least one of the vendor-specific PXE options must be set in
    # order for the client boot ROMs to realize that we are a PXE-compliant
    # server.  We set the MCAST IP address to 0.0.0.0 to tell the boot ROM
    # that we can't provide multicast TFTP (address 0.0.0.0 means no
    # address).

    option PXE.mtftp-ip 0.0.0.0;

    # This is the name of the file the boot ROMs should download.
    filename "/bootpxe.bin";
  }


  host test1 {
       # Use your slave's MAC address
       hardware ethernet                00:0F:EA:C4:B8:45;
       # Give your slave a static IP
       fixed-address                    10.0.0.3;
       server-name                      "master";
       # Use your gateway IP, if required
       #option routers                   10.0.0.138;
       # Use your DNS IP, if required
       #option domain-name-servers       10.0.0.138;
       #option domain-name               "mydomain.com";
       # Use your slave hostname
       #option host-name                 "test1";

       # Etherboot and pxe boot with a mac specific image
       #option root-path                 "/tftproot/10.0.0.3";
       #option root-path                 "/tftproot";

       if substring (option vendor-class-identifier, 0, 9) = "Etherboot" {
                        filename "/bootpxe.bin";
       } else if substring (option vendor-class-identifier, 0,9) ="PXEClient" {
                        filename "/bootpxe.bin";
       }
  }

  host test2 {
       hardware ethernet                00:80:C8:E7:E7:FD;
       fixed-address                    10.0.0.8;
       server-name                      "master";

       if substring (option vendor-class-identifier, 0, 9) = "Etherboot" {
                        filename "/bootpxe.bin";
       } else if substring (option vendor-class-identifier, 0,9) ="PXEClient" {
                        filename "/bootpxe.bin";
       }
  }

  host test3 {
       hardware ethernet                00:09:5B:1A:E8:C4;
       fixed-address                    10.0.0.9;
       server-name                      "master";

       if substring (option vendor-class-identifier, 0, 9) = "Etherboot" {
                        filename "/bootpxe.bin";
       } else if substring (option vendor-class-identifier, 0,9) ="PXEClient" {
                        filename "/bootpxe.bin";
       }
  }

  host test4 {
       hardware ethernet                00:03:FF:21:D2:C3;
       fixed-address                    10.0.0.16;
       server-name                      "master";
       if substring (option vendor-class-identifier, 0, 9) = "Etherboot" {
                        filename "/bootpxe.bin";
       } else if substring (option vendor-class-identifier, 0,9) ="PXEClient" {
                        filename "/bootpxe.bin";
       }
  }
}