coreboot May 2003

coreboot@coreboot.org

70 participants
143 discussions

Re:debugger
by sklavo 22 May '03

22 May '03

To add to Ron's message. It varies a lot with your experience and how dirty you want to get. A simple POST card and a lot of creative POST code bread crumbs is the cheap and dirty way to go, until you get the serial port debugger up and running. But it requires you to be really creative in crawling through the code. And takes a lot of time. But you can move up the a logic analyzer looking at bus cycles or an ICE (in circuit emulator) looking at CPU activity These two are expensive (lots of $10K), but you can often rent them. Setup is usually the time burner here. But with a LA you can take selective pictures of events chained together in time. I don't know if SIS has an ICE for their SOC products. Jordan PS: Has anyone done a USB interface low level debugger? Early BIOS or at least just prior to payload decompress. At 12:00 PM 5/15/2003 -0400, you wrote: >Message: 10 >Date: Thu, 15 May 2003 08:50:44 -0700 (PDT) >From: Frank <frannk_m1(a)yahoo.com> >Subject: Re: debugger >To: ron minnich <rminnich(a)lanl.gov> >Cc: linuxbios(a)clustermatic.org > >sis55x SOC x86 based >--- ron minnich <rminnich(a)lanl.gov> wrote: > > On Thu, 15 May 2003, Frank wrote: > > > > > Can anyone recommend a debugger for bringing up LinuxBios on > > an > > > x86 system... > > > > what kind of chip? and how much money can you spend? > > > > ron

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linuxbios for soltek
by Kosmider Slawomir 22 May '03

22 May '03

Hello. I found yours linuxbios project very interesting and I'm wonder if I could build it for my soltek SL-75KAV mainboard with via apollo chipset. Curently I havent fount it in the status page of this project but maybe few small changes in the source code would be enough.

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I cannot control my GPIO LEDS from the application
by Deepak Kotian 22 May '03

22 May '03

Hi, After booting from LinuxBIOS, I try to access the GPIOs connected to 7-Segmen LEDS, it does not do anything. Is there a way or something needs to be done in LinuxBIOS to enable it . If there are any experiences/suggestion, please let me know. Regards Deepak

1 0

EPIA + CONFIG_VGABIOS works
by SONE Takeshi 22 May '03

22 May '03

Today I tried CONFIG_VGABIOS. After a little bit of config hassle and fix to compile error, it just worked. Now I don't have to use ADLO. I put VGA BIOS in flash rather than enablnig PCI option ROM (it was just 0xFF 0xFF..). I like this code, it is great development. I should have tried this one first. -- Takeshi

5 6

Reverse engineering
by SONE Takeshi 22 May '03

22 May '03

Is it legal to disassemble the proprietary VGA BIOS to learn how to enable a particular VGA chip? Of course, he (who?) will not copy any bits from the copyrighted code, he'll just pick up register addresses and values, and its order. If he would eventually write a code to enable VGA this way, can we share the resulting code? -- Takeshi

11 19

brun_mtd
by Xavier Pegenaute 22 May '03

22 May '03

Hello, In the script of src/util/mtd/burn_mtd there are these lines .. - dd conv=notrunc conv=sync bs=65536 if=${linux} of=vmlinux.bin.gz.block With this we if exist we don't trunc and fix the size of vmlinux.bin.gz.block, if it's more smaller than 65536 we put 0 until this size. - dd conv=notrunc conv=sync bs=63k if=${linuxbios} of=linuxbios.block The same but with 63k. - dd conv=notrunc if=docipl of=/dev/mtd0 We write without trunc /dev/mtd0 with the source of docipl. - dd conv=notrunc if=docipl of=/dev/mtd0 seek=1 The same but this time we skip 1 block of "bs" (i supose that we can remind the value of bs in the last line, then sizeof(docipl) ). - dd conv=notrunc if=linuxbios.block of=/dev/mtd0 seek=2 Without trunc we write linuxbios.block to mtd, skipping 2 times the last size (sizeof(docipl) ). - dd conv=notrunc if=vmlinux.bin.gz.block of=/dev/mtd0 seek=128 Now without trunc write vmlinux skipping 128 times the size of linuxbios.block. My questions, are: Why we write two times docipl ? And why we skip 128 times the size of linuxbios.block ? (i supose that i'm wrong, any one can help me with these) Thanks a lot for your patience. Xavi.

3 5

Passes RAM test, but hangs at jumping to RAM
by SONE Takeshi 22 May '03

22 May '03

What could be a problem when it passes RAM test but hangs immediately after jumping to RAM? I'm developing a new raminit code and this happens only with a particular installation of DIMM. DIMM itself is not bad, it works when move to another slot, or another slot is filled with another DIMM. Award BIOS runs just fine with this DIMM installation. LinuxBIOS-1.0.0 Thu May 15 07:27:04 JST 2003 starting... Enabled first bank of RAM: 0x10000000 bytes Testing SDRAM : 00000000-0009ffff SDRAM fill: 0009ffff SDRAM verify: 0009ffff Done. Testing SDRAM : 00100000-01000000 SDRAM fill: 01000000 SDRAM verify: 01000000 Done. Copying LinuxBIOS to ram. Jumping to LinuxBIOS. (hangs up here) -- Takeshi

5 10

AMD Sledge Hammer
by Andrew Ip 21 May '03

21 May '03

Does anyone know what is the statue of AMD Hammer? I have seen it in freebios2, but would like to know how far it is from being stable? Thanks. -Andrew -- Andrew Ip Email: aip(a)cwlinux.com Tel: (852) 2542 2046 Fax: (852) 2542 2036 Mobile: (852) 9201 9866 Cwlinux Limited Unit 202B 2/F Lai Cheong Factory Building, 479-479A Castle Peak Road, Lai Chi Kok, Kowloon, Hong Kong. Tel: (852)2542 2046 Fax: (852)2542 2036 For public pgp key, please obtain it from http://www.keyserver.net/en.

3 2

ADLO
by Xavier Pegenaute 21 May '03

21 May '03

Hi, i want to try with ADLO, but at the moment i can't find MS7308E, i think that may be i can find this motherboard MS7308ET, but use a different chipset SIS630ET any one tryed with this one ? Thanks. Xavi.

2 2

Geode Video Xfree86 and VSA
by Bari Ari 21 May '03

21 May '03

Anyone know the current status of running XFree86 on the Geodes? I'm currently looking at working on getting the VSA running on the Geodes as a BLOB. Anyone else started on this yet? --Bari

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coreboot May 2003