From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Thu, 29 Sep 2005 13:11:32 +0100 (BST) Received: from paris5.amen.fr ([62.193.203.10]:30471 "EHLO paris5.amen.fr") by ftp.linux-mips.org with ESMTP id S8133635AbVI2MLO (ORCPT ); Thu, 29 Sep 2005 13:11:14 +0100 Received: from firewall (LAubervilliers-151-13-113-26.w217-128.abo.wanadoo.fr [217.128.183.26]) by paris5.amen.fr (8.10.2/8.10.2) with ESMTP id j8TCAoq23724; Thu, 29 Sep 2005 14:11:00 +0200 Message-ID: <433BD945.8030803@avilinks.com> Date: Thu, 29 Sep 2005 14:08:37 +0200 From: Yoann Allain Organization: Avilinks User-Agent: Mozilla Thunderbird 1.0 (X11/20041206) X-Accept-Language: fr, en MIME-Version: 1.0 To: Brett Foster CC: linux-mips@linux-mips.org Subject: Re: =?ISO-8859-1?Q?R=E9f=2E_=3A_Compiling_a_2=2E6_kern?= =?ISO-8859-1?Q?el_for_Mips?= References: <433A9CD9.6040906@avilinks.com> <433B87CE.1060509@uoguelph.ca> In-Reply-To: <433B87CE.1060509@uoguelph.ca> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 9078 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: yallain@avilinks.com Precedence: bulk X-list: linux-mips Thank you for your advices! I found the solution: A serial port data structure for my card was defined BUT not used in include/asm-mips/serial.h to define SERIAL_PORT_DFNS so that the structure was emtpy. Now my kernel prints output and goes a little further. It doesn't fully work but for first I'll try to fix it on my own... Thank you all again for your advices... @+ Yoann Brett Foster a écrit : > Yoann Allain wrote: > >> Here is the function putPromChar in which I have the problem: >> >> 80101e70 : >> 80101e70: 3c028039 lui $v0,0x8039 >> 80101e74: 244519f0 addiu $a1,$v0,6640 >> 80101e78: 8ca30014 lw $v1,20($a1) >> 80101e7c: 00042600 sll $a0,$a0,24 >> 80101e80: 27bdfff0 addiu $sp,$sp,-16 >> 80101e84: 00043603 sra $a2,$a0,24 >> 80101e88: 10600012 beqz $v1,80101ed4 >> 80101e8c: 00001025 move $v0,$zero >> 80101e90: 8ca20004 lw $v0,4($a1) >> 80101e94: 3c038036 lui $v1,0x8036 >> 80101e98: 8c64c9a0 lw $a0,-13920($v1) >> 80101e9c: 2442001c addiu $v0,$v0,28 >> 80101ea0: 00822021 addu $a0,$a0,$v0 >> 80101ea4: 00000000 nop >> 80101ea8: 8c820000 lw $v0,0($a0) >> 80101eac: 30420020 andi $v0,$v0,0x20 >> 80101eb0: 1040fffd beqz $v0,80101ea8 >> 80101eb4: 3c028039 lui $v0,0x8039 >> 80101eb8: 8c4319f4 lw $v1,6644($v0) >> 80101ebc: 3c048036 lui $a0,0x8036 >> 80101ec0: 8c82c9a0 lw $v0,-13920($a0) >> 80101ec4: 24630004 addiu $v1,$v1,4 >> 80101ec8: 00431021 addu $v0,$v0,$v1 >> 80101ecc: ac460000 sw $a2,0($v0) >> 80101ed0: 24020001 li $v0,1 >> 80101ed4: 03e00008 jr $ra >> 80101ed8: 27bd0010 addiu $sp,$sp,16 >> 80101edc: 00000000 nop >> >> with WinMon (bootloader) I get this (this is perhaps more readable...): >> >> [80101e70] 3c028039 lui r2,0x8039 putPromChar >> [80101e74] 244519f0 addiu r5,r2,0x19f0 >> [80101e78] 8ca30014 lw r3,0x0014(r5) >> [80101e7c] 00042600 sll r4,r4,24 >> [80101e80] 27bdfff0 addiu r29,r29,0xfff0 >> [80101e84] 00043603 sra r6,r4,24 >> [80101e88] 10600012 beq r3,r0,0x0012 >> [80101e90] 8ca20004 lw r2,0x0004(r5) --> in 2.6 it >> reads 0 at address r5 + 0x4 [80101e94] 3c038036 lui r3,0x8036 >> [80101e98] 8c64c9a0 lw r4,0xc9a0(r3) --> in 2.6 it >> reads 0 at adress r3 + 0xc9a0 >> [80101e9c] 2442001c addiu r2,r2,0x001c >> [80101ea0] 00822021 addu r4,r4,r2 ==> in 2.4 it returns >> bf010f1c in r4 >> [80101ea8] 8c820000 lw r2,0x0000(r4) >> >> * Exception 0x02 (user) : TLB (load or instruction fetch) * >> * in address: 80101ea8 >> ClockDiv2+0xe38: >> [80101ea8] 8c820000 lw r2,0x0000(r4) >> >> >> r0(zero): 00000000 r1(AT) : 1000fc00 r2(v0) : 0000001c r3(v1) : >> 80360000 >> r4(a0) : 0000001c r5(a1) : 803919f0 r6(a2) : 0000000d r7(a3) : >> 8038df8c >> >> I hope this will help and many thanks for your help! >> >> Yoann > > > I traced through some of put character function this morning... I > didn't finish, but I thought it looked like some data structure wasn't > initialized. Perhaps you can figure out exactly what line the bad load > belongs to in the C source, and see what structure that is. -- If > there is a data structure -- I could just be crazy. ;) > > Brett > >