wok-stable diff gpxe/stuff/prefix.u @ rev 7674
Fixed linux. Need to make folder PWD/_pkg before adding bzImage to it. Also i'm force copying kernel config file now so we have the right config. It is copyed twice so its needed and doesn't hunt anything i think.
| author | Christopher Rogers <slaxemulator@gmail.com> |
|---|---|
| date | Thu Dec 16 17:16:06 2010 +0000 (2010-12-16) |
| parents | a9ff8c135e36 |
| children |
line diff
1.1 --- a/gpxe/stuff/prefix.u Fri Jun 27 20:38:59 2008 +0000 1.2 +++ b/gpxe/stuff/prefix.u Thu Dec 16 17:16:06 2010 +0000 1.3 @@ -1,6 +1,14 @@ 1.4 --- gpxe-0.9.3/src/arch/i386/prefix/lkrnprefix.S 1.5 +++ gpxe-0.9.3/src/arch/i386/prefix/lkrnprefix.S 1.6 -@@ -50,40 +50,343 @@ 1.7 +@@ -3,6 +3,7 @@ 1.8 + 1.9 + Authors: Gary Byers (gb@thinguin.org) 1.10 + Marty Connor (mdc@thinguin.org) 1.11 ++ Pascal Bellard (pascal.bellard@slitaz.org) 1.12 + 1.13 + This software may be used and distributed according to the terms 1.14 + of the GNU Public License (GPL), incorporated herein by reference. 1.15 +@@ -50,40 +51,351 @@ 1.16 .arch i386 1.17 .org 0 1.18 .section ".prefix", "ax", @progbits 1.19 @@ -37,7 +45,8 @@ 1.20 + /* Calculate segment address of image start */ 1.21 + pushw %cs 1.22 + popw %ax 1.23 -+ addw $(0x100/16), %ax 1.24 ++ addw $(0x100/16), %ax /* Adjust cs */ 1.25 ++ pushw %ax 1.26 + jmp go_setup_code 1.27 + 1.28 +bootsector: 1.29 @@ -70,10 +79,7 @@ 1.30 + * 1.31 + * Segments are as follows: ds=es=ss=cs - BOOTSEG 1.32 + */ 1.33 - 1.34 -- movw $0x0007, %bx /* page 0, attribute 7 (normal) */ 1.35 -- movb $0x0e, %ah /* write char, tty mode */ 1.36 --prloop: 1.37 ++ 1.38 + xorw %cx,%cx 1.39 + movw %cx,%es /* access segment 0 */ 1.40 + movw $0x78, %bx /* 0:bx is parameter table address */ 1.41 @@ -113,7 +119,10 @@ 1.42 + * 36 sectors if sector 36 can be read, 18 sectors if sector 18 can be read, 1.43 + * 15 if sector 15 can be read. Otherwise guess 9. 1.44 + */ 1.45 -+ 1.46 + 1.47 +- movw $0x0007, %bx /* page 0, attribute 7 (normal) */ 1.48 +- movb $0x0e, %ah /* write char, tty mode */ 1.49 +-prloop: 1.50 + movw $disksizes, %si /* table of sizes to try */ 1.51 + 1.52 +probe_loop: 1.53 @@ -137,7 +146,6 @@ 1.54 + 1.55 +/* ok, we've written the Loading... message, now we want to load the system */ 1.56 + 1.57 -+ pushw %es /* = ds */ 1.58 + movw $SYSSEG, %ax 1.59 + movw %ax,%es /* segment of SYSSEG<<4 */ 1.60 + pushw %es 1.61 @@ -152,7 +160,6 @@ 1.62 + 1.63 + call print_nl 1.64 + pop %es /* = SYSSEG */ 1.65 -+ pop %es /* balance push/pop es */ 1.66 +sigok: 1.67 + 1.68 +/* Restore original disk parameters */ 1.69 @@ -164,11 +171,21 @@ 1.70 + movw %di,(%bx) 1.71 + movw %si,2(%bx) 1.72 + 1.73 -+/* after that (everything loaded), we call to the .ROM file loaded. */ 1.74 ++ /* Everything now loaded. %es = SYSSEG, so %es:0000 points to 1.75 ++ * start of loaded image. 1.76 ++ */ 1.77 + 1.78 -+ movw $SYSSEG, %ax 1.79 -+ jmp go_setup_code 1.80 ++ /* Jump to loaded copy */ 1.81 ++ ljmp $SYSSEG, $run_etherboot 1.82 + 1.83 ++endseg: .word SYSSEG + _load_size_pgh 1.84 ++ .section ".zinfo.fixup", "a" /* Compressor fixup information */ 1.85 ++ .ascii "SUBW" 1.86 ++ .long endseg 1.87 ++ .long 16 1.88 ++ .long 0 1.89 ++ .previous 1.90 ++ 1.91 +/* This routine loads the system at address SYSSEG<<4, making sure no 64kB 1.92 + * boundaries are crossed. We try to load it as fast as possible, loading whole 1.93 + * tracks whenever we can. 1.94 @@ -187,8 +204,7 @@ 1.95 + movb $4, %cl 1.96 + shrw %cl,%dx /* bx is always divisible by 16 */ 1.97 + addw %dx,%ax 1.98 -+.equ SYSSIZE, _load_size_pgh - 32 1.99 -+ cmpw $SYSSEG+SYSSIZE, %ax /* have we loaded all yet? */ 1.100 ++ cmpw syssize, %ax /* have we loaded all yet? */ 1.101 + jb ok1_read 1.102 + ret 1.103 +ok1_read: 1.104 @@ -320,9 +336,11 @@ 1.105 loop prloop 1.106 -freeze: jmp freeze 1.107 + ret 1.108 -+ 1.109 + 1.110 +-why: .ascii "This image cannot be loaded from a floppy disk.\r\n" 1.111 +-why_end: 1.112 +/* print_hex prints the word pointed to by ss:bp in hexadecimal. */ 1.113 -+ 1.114 + 1.115 +print_hex: 1.116 + movw (%bp),%dx /* load word into dx */ 1.117 + movb $4, %cl 1.118 @@ -350,12 +368,10 @@ 1.119 + 1.120 +sectors: 1.121 + .word 0 1.122 - 1.123 --why: .ascii "This image cannot be loaded from a floppy disk.\r\n" 1.124 --why_end: 1.125 ++ 1.126 +dpseg: .word 0 1.127 +dpoff: .word 0 1.128 - 1.129 ++ 1.130 +disksizes: 1.131 + .byte 36,18,15,9,0 1.132 + 1.133 @@ -365,13 +381,27 @@ 1.134 1.135 .org 497 1.136 setup_sects: 1.137 -@@ -123,14 +426,23 @@ 1.138 +@@ -106,13 +418,6 @@ 1.139 + 1.140 + .org 512 1.141 + 1.142 +- .section ".zinfo.fixup", "a" /* Compressor fixup information */ 1.143 +- .ascii "SUBW" 1.144 +- .long syssize 1.145 +- .long 16 1.146 +- .long 0 1.147 +- .previous 1.148 +- 1.149 + /* 1.150 + We're now at the beginning of the second sector of the image - 1.151 + where the setup code goes. 1.152 +@@ -123,14 +428,18 @@ 1.153 executing the Etherboot image that's loaded at SYSSEG:0 and 1.154 whose entry point is SYSSEG:0. 1.155 */ 1.156 -setup_code: 1.157 +setup_code: 1.158 -+ movw $(SYSSEG-(PREFIXSIZE/16)), %ax 1.159 ++ pushw $(SYSSEG-(PREFIXSIZE/16)) 1.160 /* Etherboot expects to be contiguous in memory once loaded. 1.161 * LILO doesn't do this, but since we don't need any 1.162 * information that's left in the prefix, it doesn't matter: 1.163 @@ -380,14 +410,20 @@ 1.164 */ 1.165 - ljmp $(SYSSEG-(PREFIXSIZE/16)), $run_etherboot 1.166 +go_setup_code: 1.167 -+ xorw %cx, %cx 1.168 -+ pushw %cx 1.169 -+ pushw %cx /* No parameters to preserve for exit path */ 1.170 -+ pushw %cx /* Use prefix exit path mechanism */ 1.171 -+ pushw %ax 1.172 + pushw $run_etherboot 1.173 + /* Calculated lcall to _start with %cs:0000 = image start */ 1.174 + lret 1.175 1.176 1.177 .org PREFIXSIZE 1.178 +@@ -140,6 +449,10 @@ 1.179 + run_etherboot: 1.180 + call install 1.181 + 1.182 ++ /* Set up real-mode stack */ 1.183 ++ movw %bx, %ss 1.184 ++ movw $_estack16, %sp 1.185 ++ 1.186 + /* Jump to .text16 segment */ 1.187 + pushw %ax 1.188 + pushw $1f