SeaBIOS March 2012

seabios@seabios.org

31 participants
85 discussions

Re: [SeaBIOS] How to Debug read operation on hda

by Kevin O'Connor

On Wed, Feb 29, 2012 at 11:22:34AM +0900, Daniel Castro wrote: > Greeting, > > As part of the xen code for PV-Drivers in Seabios I am trying to boot > from a PV drive. The two ends are connected, and it should be working, > but when I try to boot from the harddrive it fails. > Inside the code I treat the cdrom as a drive, except I register it in > seabios with the cdrom function, but also it fails to boot from cdrom > with Error 003. > This could mean that maybe I am adding the drives incorrectly, or that > my read/write opertaion is wrong. > > Since the operation runs in 16bit how can I debug it to see what is being done? I usually debug by adding dprintf statements. When that's too painful, I connect gdb to qemu and set break points - the steps for using gdb are in the README file. I don't know if there is a similar way to connect gdb to a xen session. -Kevin

8 years, 5 months

USB boot failes

by Christian Gmeiner

As my last mail is still waiting for approval, I will resend it. Hi all, I am trying to boot Linux via Grub from an USB stick. I have tried the USB stick on my devel i5 machine and it worked. Log can be found here: http://nopaste.info/2b119334eb.html thanks -- Christian Gmeiner, MSc

8 years, 5 months

Linux-ready Firmware Kit

by Fred .

# yum install pmtools # acpidump > acpi.dump # acpixtract -l acpi.dump # dmidecode Intel provides a Linux-ready Firmware Kit, available on a LiveCD (79 MB) ( http://linuxfirmwarekit.org/download/firmwarekit-r3.iso ). You only have to launch it, wait 1 or 2 minutes, and there is a summary of the results based on different topics (memory handling, PCI resources, HPET, ACPI tables, and more). The results is a number of "Fail", "Warn" and "Pass" flags. This Linux-ready Firmware Kit seems to not be developed anymore, but I guess it can give us a idea of the quality of the BIOS.

8 years, 5 months

invalid handle_legacy_disk

by Christian Gmeiner

What is the cause of this error message? I am tying to boot via CFC. finalize PMM malloc finalize Add to e820 map: 0009fc00 00000400 2 Add to e820 map: 0f7c0000 00010000 1 Returned 65536 bytes of ZoneHigh e820 map has 5 items: 0: 0000000000000000 - 000000000009fc00 = 1 RAM 1: 000000000009fc00 - 00000000000a0000 = 2 RESERVED 2: 00000000000f0000 - 0000000000100000 = 2 RESERVED 3: 0000000000100000 - 000000000f7d0000 = 1 RAM 4: 000000000f7d0000 - 000000000f7e0000 = 2 RESERVED Jump to int19 enter handle_19: NULL Booting from Hard Disk... Booting from 0000:7c00 ata_reset drive=0x0000db10 ata_reset exit status=50 enter handle_12: a=00000000 b=0010a480 c=00000000 d=00000000 ds=0000 es=0000 ss=0000 si=001069f0 di=000168c0 bp=00001ff0 sp=00001ff4 cs=0000 ip=8a9b f=0246 invalid handle_legacy_disk:846: a=00000201 b=00000000 c=00000001 d=00000081 ds=0000 es=6800 ss=0000 si=00070003 di=0f750201 bp=00001ff0 sp=00001ff4 cs=0000 ip=8994 f=0246 invalid handle_legacy_disk:846: a=00000000 b=00000001 c=00000001 d=00000081 ds=0000 es=6800 ss=0000 si=00070003 di=0f750201 bp=00001ff0 sp=00001ff4 cs=0000 ip=899c f=0246 invalid handle_legacy_disk:846: a=00000201 b=00000000 c=00000001 d=00000081 ds=0000 es=6800 ss=0000 si=00070002 di=0f750201 bp=00001ff0 sp=00001ff4 cs=0000 ip=8994 f=0246 invalid handle_legacy_disk:846: a=00000000 b=00000001 c=00000001 d=00000081 ds=0000 es=6800 ss=0000 si=00070002 di=0f750201 bp=00001ff0 sp=00001ff4 cs=0000 ip=899c f=0246 invalid handle_legacy_disk:846: a=00000201 b=00000000 c=00000001 d=00000081 ds=0000 es=6800 ss=0000 si=00070001 di=0f750201 bp=00001ff0 sp=00001ff4 cs=0000 ip=8994 f=0246 invalid handle_legacy_disk:846: a=00000000 b=00000001 c=00000001 d=00000081 ds=0000 es=6800 ss=0000 si=00070001 di=0f750201 bp=00001ff0 sp=00001ff4 cs=0000 ip=899c f=0246 invalid handle_legacy_disk:846: a=00000000 b=00000081 c=0000000d d=00000000 ds=0000 es=0000 ss=0000 si=0007fe10 di=0f7506c4 bp=00001ff0 sp=00001ff4 cs=0000 ip=8a6f f=0246 invalid handle_legacy_disk:846: a=00001500 b=00000081 c=0000000d d=00000000 ds=0000 es=0000 ss=0000 si=0007fe10 di=0f7506c4 bp=00001ff0 sp=00001ff4 cs=0000 ip=8a74 f=0247 unimplemented handle_1aXX:493: a=00005650 b=00000000 c=00000000 d=0f611eae ds=0000 es=0000 ss=0000 si=0f7a9070 di=0f6134d8 bp=00001ff0 sp=00001ff2 cs=0000 ip=8f1e f=0246 invalid handle_legacy_disk:846: a=00000201 b=00000000 c=00000001 d=00000081 ds=0000 es=6800 ss=0000 si=00070003 di=0f750201 bp=00001ff0 sp=00001ff4 cs=0000 ip=8994 f=0246 invalid handle_legacy_disk:846: a=00000000 b=00000001 c=00000001 d=00000081 ds=0000 es=6800 ss=0000 si=00070003 di=0f750201 bp=00001ff0 sp=00001ff4 cs=0000 ip=899c f=0246 invalid handle_legacy_disk:846: a=00000201 b=00000000 c=00000001 d=00000081 ds=0000 es=6800 ss=0000 si=00070002 di=0f750201 bp=00001ff0 sp=00001ff4 cs=0000 ip=8994 f=0246 invalid handle_legacy_disk:846: a=00000000 b=00000001 c=00000001 d=00000081 ds=0000 es=6800 ss=0000 si=00070002 di=0f750201 bp=00001ff0 sp=00001ff4 cs=0000 ip=899c f=0246 invalid handle_legacy_disk:846: a=00000201 b=00000000 c=00000001 d=00000081 ds=0000 es=6800 ss=0000 si=00070001 di=0f750201 bp=00001ff0 sp=00001ff4 cs=0000 ip=8994 f=0246 invalid handle_legacy_disk:846: a=00000000 b=00000001 c=00000001 d=00000081 ds=0000 es=6800 ss=0000 si=00070001 di=0f750201 bp=00001ff0 sp=00001ff4 cs=0000 ip=899c f=0246 invalid handle_legacy_disk:846: a=00000000 b=00000081 c=0000000d d=00000000 ds=0000 es=0000 ss=0000 si=0007fe10 di=0f7506c4 bp=00001ff0 sp=00001ff4 cs=0000 ip=8a6f f=0246 invalid handle_legacy_disk:846: a=00001500 b=00000081 c=0000000d d=00000000 ds=0000 es=0000 ss=0000 si=0007fe10 di=0f7506c4 bp=00001ff0 sp=00001ff4 cs=0000 ip=8a74 f=0247 -- Christian Gmeiner, MSc

8 years, 5 months

First access to the block drive

by Daniel Castro

Hello all, The xen pv drivers are almost done. When I start the booting process from hda seabios tries to read lba at 0 (sector 0) buffer (buf_fl) to 7c00 count 0 operation 0 (read) command 1 (unlisted) I do not understand count 0 and command 1. Should it be count 1, for the first sector on the drive and a command such as listed in drive.h? Is this normal? Am I missing something? Thanks, Daniel -- +-=====---------------------------+ | +---------------------------------+ | This space intentionally blank for notetaking. | | | Daniel Castro, | | | | Consultant/Programmer.| | | | U Andes | +-------------------------------------+

8 years, 5 months

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SeaBIOS March 2012