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From: cvs at opencores.org<cvs@o...>
Date: Thu Jan 25 19:27:59 CET 2007
Subject: [cvs-checkins] MODIFIED: s1_core ...
Date: 00/07/01 25:19:27 Added: s1_core/tools/opt/disass disass prog.c README.txt
Log:
Added first version of small tool to reverse engineer the boot code used by the T1.
Revision Changes Path
1.1 s1_core/tools/opt/disass/disass
http://www.opencores.org/cvsweb.shtml/s1_core/tools/opt/disass/disass?rev=1.1&content-type=text/x-cvsweb-markup
Index: disass
===================================================================
sparc64-linux-gcc -c prog.c
sparc64-linux-objdump -d prog.o
1.1 s1_core/tools/opt/disass/prog.c
http://www.opencores.org/cvsweb.shtml/s1_core/tools/opt/disass/prog.c?rev=1.1&content-type=text/x-cvsweb-markup
Index: prog.c
===================================================================
int main() {
// Fetch from ROM
asm("nop \n nop \n nop \n nop \n");
// PA fff0000020
asm(".long 0x03000000"); // offset 0
asm(".long 0x05000100"); // offset 4
asm(".long 0x82106000"); // offset 8
asm(".long 0x8410a0c0"); // offset c
// PA fff0000030
asm(".long 0x83287020");
asm(".long 0x84108001");
asm(".long 0x81c08000");
asm(".long 0x01000000");
// Fetch from RAM
asm("nop \n nop \n nop \n nop \n");
// PA 00000400c0
asm(".long 0xb5802005");
asm(".long 0xa2102000");
asm(".long 0x821020a9");
asm(".long 0x83287020");
// PA 00000400d0
asm(".long 0xe2706000");
asm(".long 0xe2706040");
asm(".long 0xe2706080");
asm(".long 0xe27060c0");
// PA 00000400e0
asm(".long 0xa2102000");
asm(".long 0x82102010");
asm(".long 0xe2f04840");
asm(".long 0xa2102003");
// PA 00000400f0
asm(".long 0xe2f008a0");
asm(".long 0xa3480000");
asm(".long 0x819c6820");
asm(".long 0x87802025");
// PA 0000040100
asm(".long 0xc0f023c0");
asm(".long 0xc0f023c8");
asm(".long 0xc0f023d0");
asm(".long 0xc0f023d8");
// PA 0000040110
asm(".long 0xc0f023e0");
asm(".long 0xc0f023e8");
asm(".long 0xc0f023f0");
asm(".long 0xc0f023f8");
// PA 0000040120
asm(".long 0x8f902000");
asm(".long 0xa1902000");
asm(".long 0x8d802000");
asm(".long 0x85802000");
// PA 0000040130
asm(".long 0x87802000");
asm(".long 0x84102000");
asm(".long 0x89908000");
asm(".long 0x84102000");
// PA 0000040140
asm(".long 0xb1808000");
asm(".long 0x84102001");
asm(".long 0x8528b03f");
asm(".long 0xaf808000");
// PA 0000040150
asm(".long 0xb3808000");
asm(".long 0xbf988000");
asm(".long 0x81800000");
asm(".long 0x9190200f");
// PA 0000040160
asm(".long 0x93902000");
asm(".long 0x95902006");
asm(".long 0x97902000");
asm(".long 0x9b902000");
// PA 0000040170
asm(".long 0x99902007");
asm(".long 0x9d902007");
asm(".long 0x82102018");
asm(".long 0xc0f00a01");
// PA 0000040180
asm(".long 0xc0f00b01");
asm(".long 0xa2102003");
asm(".long 0xe2f00960");
asm(".long 0xa2102003");
// PA 0000040190
asm(".long 0x821020aa");
asm(".long 0x83287020");
asm(".long 0xe2706000");
asm(".long 0xe2706040");
// PA 00000401a0
asm(".long 0xe2706080");
asm(".long 0xe27060c0");
asm(".long 0xa3468000");
asm(".long 0x03000007");
// PA 00000401b0
asm(".long 0x82106300");
asm(".long 0xa20c4001");
asm(".long 0xa3347008");
asm(".long 0x03000000");
// PA 00000401c0
asm(".long 0x05000130");
asm(".long 0x82106000");
asm(".long 0x8410a000");
asm(".long 0x83287020");
// PA 00000401d0
asm(".long 0x84108001");
asm(".long 0xa32c7003");
asm(".long 0xc4588011");
asm(".long 0x82102080");
// PA 00000401e0
asm(".long 0xc4f04b00");
asm(".long 0x2f000200");
asm(".long 0x8b9dc000");
asm(".long 0x21000000");
// PA 00000401f0
asm(".long 0x03000130");
asm(".long 0xa0142000");
asm(".long 0x82106140");
asm(".long 0xa12c3020");
// PA 0000040200
asm(".long 0x82104010");
asm(".long 0x8528b007");
asm(".long 0x82004002");
asm(".long 0xe2584000");
// PA 0000040210
asm(".long 0xe2f006e0");
asm(".long 0xe2586008");
asm(".long 0xe2f007e0");
asm(".long 0xe2586010");
// PA 0000040220
asm(".long 0xe2f006a0");
asm(".long 0xe2586020");
asm(".long 0xe2f006c0");
asm(".long 0xe2586018");
// PA 0000040230
asm(".long 0xe2f007a0");
asm(".long 0xe2586028");
asm(".long 0xe2f007c0");
asm(".long 0xe2586040");
// PA 0000040240
asm(".long 0xe2f00660");
asm(".long 0xe2586048");
asm(".long 0xe2f00760");
asm(".long 0xe2586050");
// PA 0000040250
asm(".long 0xe2f00620");
asm(".long 0xe2586060");
asm(".long 0xe2f00640");
asm(".long 0xe2586058");
// PA 0000040260
asm(".long 0xe2f00720");
asm(".long 0xe2586068");
asm(".long 0xe2f00740");
asm(".long 0x94102080");
// PA 0000040270
asm(".long 0xc0f28ae0");
asm(".long 0xc0f28be0");
asm(".long 0xa2102008");
asm(".long 0xc0f44420");
// PA 0000040280
asm(".long 0xa2102010");
asm(".long 0xc0f44420");
asm(".long 0xa210200f");
asm(".long 0xe2f008a0");
// PA 0000040290
asm(".long 0x03000000");
asm(".long 0x05000510");
asm(".long 0x82106000");
asm(".long 0x8410a000");
// PA 00000402a0
asm(".long 0x83287020");
asm(".long 0x84108001");
asm(".long 0x87480000");
asm(".long 0x8f902001");
// PA 00000402b0
asm(".long 0x88102000");
asm(".long 0x83990000");
asm(".long 0x8f902000");
asm(".long 0x90102000");
// PA 00000402c0
asm(".long 0x81c08000");
asm(".long 0x81982800");
asm(".long 0x01000000");
asm(".long 0x01000000");
// PA 00000402d0
asm(".long 0x8210200f");
asm(".long 0xc2f008a0");
asm(".long 0xc0f00860");
asm(".long 0x83480000");
// End
asm("nop \n nop \n nop \n nop \n");
return 0;
}
1.1 s1_core/tools/opt/disass/README.txt
http://www.opencores.org/cvsweb.shtml/s1_core/tools/opt/disass/README.txt?rev=1.1&content-type=text/x-cvsweb-markup
Index: README.txt
===================================================================
This small program is used to disassemble
the boot code used by the SPARC Core.
Just run:
./disass | less
to see the code; note that the disassembled code
is of the kind:
- Beginning of main function: IGNORE THIS
- 4 x NOP: to signal beginning of ROM boot code
- REAL boot code into the OpenBoot PROM at Physical Address 0xfff0000020
- 4 x NOP: to signal beginning of RAM boot code
- REAL boot code executed from RAM at Physical Address 0x00000400c0
- 4 x NOP: to signal end of boot code
- End of main() function: IGNORE THIS
That's all!
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