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Modified the pxe_ia32 stage 1 loader to load stage 2 at the same address as bios_ia32 stage 1 does.

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This allowes to actually execute the boot loader now. 
Need to use Ingo's remote_disk_server now for booting.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19113 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Marcus Overhagen 2006-10-24 20:53:30 +00:00
parent 743fe40eba
commit a1939ee423
8 changed files with 64 additions and 32 deletions
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4
build/jam/HaikuPXE
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@ -1,4 +1,6 @@
NotFile pxehaiku ;
Depends pxehaiku : pxe_stage1.bin ;
NotFile haiku-pxe-image ;
NotFile haiku-pxe-loader ;
Depends pxehaiku : zbeos ;

1
headers/private/kernel/boot/platform/pxe_ia32/bios_drive.h Normal file
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@ -0,0 +1 @@
#include "../bios_ia32/bios_drive.h"

1
headers/private/kernel/boot/platform/pxe_ia32/platform_kernel_args.h Normal file
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@ -0,0 +1 @@
#include "../bios_ia32/platform_kernel_args.h"

1
headers/private/kernel/boot/platform/pxe_ia32/platform_stage2_args.h Normal file
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@ -0,0 +1 @@
#include "../bios_ia32/platform_stage2_args.h"

19
src/system/boot/platform/pxe_ia32/Jamfile
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@ -44,6 +44,23 @@ KernelMergeObject boot_platform_pxe_ia32.o :
;
rule BuildPXEstage1 {
local bin = $(1) ;
local source = $(2) ;
Depends $(bin) : $(source) ;
MakeLocateDebug $(bin) ;
}
actions BuildPXEstage1 {
rm -f $(1)
as -o $(1).o $(2)
ld --oformat binary --Ttext 0x7C00 -o $(1) $(1).o
}
BuildPXEstage1 pxe_stage1.bin : pxe_stage1.S ;
SEARCH on [ FGristFiles $(bios_ia32_src) ]
= [ FDirName $(SUBDIR) $(DOTDOT) bios_ia32 ] ;
@ -56,5 +73,5 @@ SEARCH on stage1.bin
# Tell the build system to where stage1.bin can be found, so it can be used
# elsewhere.
SEARCH on pxe_stage1.bin = $(SUBDIR) ;
# SEARCH on pxe_stage1.bin = $(SUBDIR) ;

57
src/system/boot/platform/pxe_ia32/pxe_stage1.S
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@ -25,15 +25,13 @@
.equ PXENV_PACKET_TYPE_DHCP_ACK, 2
.equ PXENV_PACKET_TYPE_CACHED_REPLY, 3
.equ scratchbuffer_addr_seg, 0x2000
.equ scratchbuffer_addr_ofs, 0x0000
.equ scratchbuffer_addr, ((scratchbuffer_addr_seg << 4) + scratchbuffer_addr_ofs)
.equ scratchbuffer_size, 15000
.equ scratchbuffer_addr, 0x9000
.equ scratchbuffer_addr_seg, (scratchbuffer_addr / 16)
.equ scratchbuffer_addr_ofs, (scratchbuffer_addr % 16)
.equ scratchbuffer_size, 0x7000
// load at 1 MB
.equ load_addr, 0x100000
.equ load_addr_seg, 0xffff
.equ load_addr_ofs, 0x0010
.equ load_addr, 0x10000
.equ load_size_max, 0x80000
.code16
.text
@ -237,7 +235,7 @@ _start:
imull $65535, %eax
movl %eax, max_fsize
// print max file size
// print max TFTP file size
movw $maxfsize, %si
call puts
movl max_fsize, %eax
@ -245,12 +243,26 @@ _start:
movw $crlf, %si
call puts
// check if file is small enough
// print max stage 2 file size
movw $maxs2size, %si
call puts
movl $load_size_max, %eax
call puthex32
movw $crlf, %si
call puts
// check if file is small enough (TFTP limit)
movl s_PXENV_TFTP_GET_FSIZE_FileSize, %eax
movl max_fsize, %ebx
cmpl %ebx, %eax
ja err_etoobig
// check if file is small enough (address range limit)
movl s_PXENV_TFTP_GET_FSIZE_FileSize, %eax
movl $load_size_max, %ebx
cmpl %ebx, %eax
ja err_etoobig
// load data
movl $load_addr, %edi
read_loop:
@ -289,11 +301,11 @@ _copy_b: movb (%esi), %al
jnz _copy_b
_copy_done:
// print a dot every 100 packets
// print a dot every 20 packets
movw pos, %ax
incw %ax
movw %ax, pos
cmpw $100, %ax
cmpw $20, %ax
jb _no_dot
xorw %ax, %ax
movw %ax, pos
@ -340,7 +352,7 @@ pm_start:
mov %ax, %gs
mov %ax, %ss
ljmp $0x8, $0x100000
ljmp $0x8, $load_addr
.code16
stop: hlt
@ -461,11 +473,12 @@ length: .asciz ", length "
loading: .asciz "Loading image file "
fsizeis: .asciz "Image file size is "
psizeis: .asciz "Packet size is "
maxfsize: .asciz "Maximum file size is "
etoobig: .asciz "Image file is too large, loading failed\r\n"
sizefailed: .asciz "\r\nCouldn't get image file size, loading failed\r\n"
loadfailed: .asciz "\r\nLoading image file failed\r\n"
executing: .asciz "\r\nExecuting stage 2 loader\r\n"
maxfsize: .asciz "Maximum TFTP file size is "
maxs2size: .asciz "Maximum stage 2 file size is "
etoobig: .asciz "haiku-pxe-loader file is too large, loading aborted\r\n"
sizefailed: .asciz "\r\nCouldn't get haiku-pxe-loader file size, loading failed\r\n"
loadfailed: .asciz "\r\nLoading haiku-pxe-loader (stage 2) failed\r\n"
executing: .asciz "\r\nExecuting haiku-pxe-loader (stage 2)\r\n"
colon: .asciz ":"
dot: .asciz "."
crlf: .asciz "\r\n"
@ -538,8 +551,8 @@ s_PXENV_TFTP_OPEN:
s_PXENV_TFTP_OPEN_Status: .word 0
s_PXENV_TFTP_OPEN_ServerIPAddress: .long 0
s_PXENV_TFTP_OPEN_GatewayIPAddress: .long 0
s_PXENV_TFTP_OPEN_FileName: .asciz "haiku-pxe-image"
.fill 112
s_PXENV_TFTP_OPEN_FileName: .asciz "haiku-pxe-loader"
.fill 111
s_PXENV_TFTP_OPEN_TFTPPort: .word (69 << 8)
s_PXENV_TFTP_OPEN_PacketSize: .word 1456
@ -547,8 +560,8 @@ s_PXENV_TFTP_GET_FSIZE:
s_PXENV_TFTP_GET_FSIZE_Status: .word 0
s_PXENV_TFTP_GET_FSIZE_ServerIPAddress: .long 0
s_PXENV_TFTP_GET_FSIZE_GatewayIPAddress:.long 0
s_PXENV_TFTP_GET_FSIZE_FileName: .asciz "haiku-pxe-image"
.fill 112
s_PXENV_TFTP_GET_FSIZE_FileName: .asciz "haiku-pxe-loader"
.fill 111
s_PXENV_TFTP_GET_FSIZE_FileSize: .long 0
s_PXENV_TFTP_READ:

11
src/system/boot/platform/pxe_ia32/pxe_stage2.S
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@ -5,10 +5,10 @@
*/
/** This file contains the stage 2 boot loader for the PXE (preboot execution
* environment) image.
* It gets loaded by the PXE stage1 loader to 0xffff:0010 (0x100000), and it
* starts execution in 32 bit protected mode. Entry point is at offset 0.
/** This file contains the stage 2 boot loader (haiku-pxe-loader) for the PXE
* (preboot execution environment) API
* It gets loaded by the PXE stage1 loader to 0x10000, and it starts execution
* in 32 bit protected mode. Entry point is at offset 0.
* This code will directly call the entry function of the embedded ELF part
* of the loader.
*/
@ -24,9 +24,6 @@ pxe_start:
mov $0x10000, %ebp // setup new stack
mov %ebp, %esp
// stop: hlt
// jmp stop
call _start
//--------------------------------------------------------------

2
src/system/ldscripts/x86/boot_loader_pxe_ia32.ld
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@ -4,7 +4,7 @@ OUTPUT_ARCH(i386)
ENTRY(_start)
SECTIONS
{
. = 0x100000;
. = 0x10000;
/* text/read-only data */
.text : { *(.text .gnu.linkonce.t.*) }