coreboot December 2012

coreboot@coreboot.org

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341 discussions

#95: Run coreboot in VirtualBox
by coreboot 10 Dec '14

10 Dec '14

#95: Run coreboot in VirtualBox ---------------------------------+------------------------------------------ Reporter: uwe | Owner: somebody Type: defect | Status: new Priority: minor | Milestone: Component: misc | Version: Keywords: | Dependencies: Patchstatus: there is no patch | ---------------------------------+------------------------------------------ It would be nice if we could test coreboot images in VirtualBox, see http://virtualbox.org/. VirtualBox does not (yet) provide a simple mechanism to use a different BIOS in their emulated machines (something like "-L" in qemu). Instead the BIOS image (a custom bochs BIOS + LGPL'g VGABIOS) is converted to C code (an array of bytes, or the like) and merged into the VirtualBox executable. The relevant files are {{{ src/VBox/Devices/PC/DevPcBios.cpp bldprogs/bin2c.c }}} if someone want to hack VirtualBox to easily support using coreboot images instead of their usual BIOS. -- Ticket URL: <http://tracker.coreboot.org/trac/coreboot/ticket/95> coreboot <http://www.coreboot.org/>

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EHCI debug port finder
by Carl-Daniel Hailfinger 30 May '14

30 May '14

I wanted to know which physical port of my multiple USB controllers have the debug capability. There was no way to find that easily, so I created a tool which will do most of the work for the user. Example output: The following PCI devices support a USB debug port (says lspci): 0000:00:1d.7 The following PCI devices support a USB debug port (says the kernel): 0000:00:1d.7 PCI device 0000:00:1d.7, USB bus 3, USB physical port 1 Currently connected high-speed devices: /: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/6p, 480M |__ Port 2: Dev 20, If 0, Class=stor., Driver=usb-storage, 480M The output can be improved, but it's a good start. Regards, Carl-Daniel -- http://www.hailfinger.org/

5 13

Dual SPI Flash adapter attempt 2.0
by Oliver Schinagl 09 Mar '14

09 Mar '14

Hi list(s), Here's my second attempt at routing the previously mailed png of my schema. It was a lot trickier to route then my previous version, but I think it worked out! As mentioned, S1 and S2 need to be shorted if U3 is to be omitted. RN1 should be 10k or ideally 100k, as Peter mentioned earlier. Hopefully there's no obvious mistakes and can start working on alternative layouts (so it is insert-able in different angles). DRC Check fails on S1, S2 and U3. It thinks the distance is to shallow. That said, DRC check passes when I set the copper width/distance to 7mil's instead of the current 8 mils. I'm planning on having these PCB's manufactured by Seeed studio and their minimal width is much smaller. Minimum trace width: 6mil Minimum trace/vias/pads space : 6mil Minimum silkscreen width : 4mil Minimum silkscreen text size : 32mil I've used a grid size of 10mil and distances of 8 mils, as I didn't want to rely on the minimum of seed. The silkscreen I positioned using a grid size of 5 mil's however. Not sure what they mean with a 'minimum silkscreen text size' however. Anyhow, feedback greatly appreciated, so I can start working on alternative layouts :)

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#186: 3com 3c905tx / gpxe boot problem
by coreboot 11 Jan '14

11 Jan '14

#186: 3com 3c905tx / gpxe boot problem -----------------------------------+---------------------------------- Reporter: jeroenkrabbendam@… | Owner: stepan@… Type: defect | Status: new Priority: minor | Milestone: Component: coreboot | Keywords: gpxe Dependencies: | Patch Status: there is no patch -----------------------------------+---------------------------------- Although (or: just because) novice in the field, I encountered some problems with netbooting with coreboot. Mobo's tried: Asus P2B, VTech with bios id ITE8671-2A69KV3IC-00. All mobo's boot '''harddisk''' fine with Asus P2B / Gigabyte GA-6BX{CE} respectively. NIC ROM is started, and loads the kernel by tftp. This is vvvveeeerrrryyy slow! Although loading, the kernel is never able to start itself. Same kernel on HDU is no problem at all (GRUB2) Note: the gpxe-image is on the nic, coreboot payload is seabios. -- Ticket URL: <https://tracker.coreboot.org/trac/coreboot/ticket/186> coreboot <http://www.coreboot.org/>

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unsupported mb questions (amd fam10h)
by Roman Elshin 21 Jul '13

21 Jul '13

I try to get coreboot working with asrock 880g pro3 board. First problem: spd eprom say that memory ddr1600 capable, but it is not so, is there are right way to limit memory frequency at ddr1333? Other problem, may be related as machine with broken memory are very unpredictable: boot process stop with "It is not SB800 or SB810" message. I try to enable sb850 by this patch, but looks like it is not enough, most of time coreboot does not detect hdd. Sometimes in very rare case it is possible to boot from sata. Are sb850 supported by coreboot? ----------------------------------------------------------------------- diff -urN a/src/southbridge/amd/sb800/early_setup.c b/src/southbridge/amd/sb800/early_setup.c --- a/src/southbridge/amd/sb800/early_setup.c 2012-07-14 19:00:40.000000000 +0400 +++ b/src/southbridge/amd/sb800/early_setup.c 2012-07-14 21:49:54.000000000 +0400 @@ -94,7 +94,10 @@ rev = REV_SB800_A11; } else if (rev_id == 0x41) { rev = REV_SB800_A12; - } else { + } else if (rev_id == 0x42) { + rev = REV_SB800_A13; + } + else { die("It is not SB800 or SB810\r\n"); } diff -urN a/src/southbridge/amd/sb800/sb800.h b/src/southbridge/amd/sb800/sb800.h --- a/src/southbridge/amd/sb800/sb800.h 2012-07-14 19:00:40.000000000 +0400 +++ b/src/southbridge/amd/sb800/sb800.h 2012-07-14 21:49:10.000000000 +0400 @@ -48,7 +48,7 @@ #define REV_SB800_A11 0x11 #define REV_SB800_A12 0x12 - +#define REV_SB800_A13 0x13 #ifdef __PRE_RAM__ void sb800_lpc_port80(void); -------------------------------------------------------------------------

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Re: [coreboot] ASUS m5a88-v AGESA port (bulldozer)
by darkdefende＠gmail.com 04 Jul '13

04 Jul '13

Idwer Vollering writes: > Done. Thanks for attaching the log for me. Some recent commits to coreboot master seems to have solved my problem with the pci scan hang. Now I don't have to hack around it any more. However it still freezes after it's done (?) loading seabios. I have uploaded my changes to https://github.com/DarkDefender/coreboot if anyone want's to look at them. I've tried to enable more debugging options in the "OptionsIds.h" for AGESA but it doesn't seem to do anything. The asserts are triggered druing boot are still the same as before. I've tried to look at it but I didn't really understand what I should change to solve them.

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New patch to review: 49493f5 T60: add volume CMOS setting
by gerrit＠coreboot.org 28 Jan '13

28 Jan '13

Sven Schnelle (svens(a)stackframe.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/12 -gerrit

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Re: [coreboot] how to use TianoCore as a coreboot payload
by Philip Schulz 15 Jan '13

15 Jan '13

Hi, I'm not subscribed, so please cc: me if you want me to see your email. Peter Stuge wrote: > David Hendricks wrote: >> >> http://www.phisch.org/website/efiboot/ >> >> Perhaps you can contact the author? His e-mail address is at the >> very bottom of the efiboot website. > > This has been attempted by several people already, and as far as I > know noone has even received a reply. > It's true that a few people have contacted me and asked for source code. I think everyone has received a reply, although the reply may not have been what the sender probably wanted it to be. I'd like to make a general comment about "efiboot": You need to realize that this is really a very, very thin layer of code. The only thing it does is to act as a coreboot payload (through libpayload); build a minimal UEFI-compliant HOB list and pass it to the DXE core. To do that, you also need to load and start the DXE core from the Firmware Flash the TianoCore build process creates. I think anyone can do this and I believe the hardest part about this is understanding UEFI and TianoCore. The good thing about that part is that there is a lot of documentation plus I think you need to understand UEFI (and the TianoCore implementation) anyways -- if you're seriously going to use it. Please don't take this as an angry comment about people sending me emails. In fact, I'm always happy to hear from people interested in my projects. Also, I'm more than happy to help with questions, but please respect that I cannot release source code. Phil.

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Will coreboot work on 945G-M4 (NEC) // ECS 945G-NM uATX Motherboard
by ehaouas＠noos.fr 03 Jan '13

03 Jan '13

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Patch set updated for coreboot: 4c1a517 armv7: create init.S for early ARMv7 init
by David Hendricks 31 Dec '12

31 Dec '12

David Hendricks (dhendrix(a)chromium.org) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/2083 -gerrit commit 4c1a517ee2796b070ce5a8b306b6dbb76ec9e063 Author: David Hendricks <dhendrix(a)chromium.org> Date: Thu Dec 27 15:23:57 2012 -0800 armv7: create init.S for early ARMv7 init The old start.S file did a lot of work and had AP-specific #ifndef's. The new init.S will eventually contain only bare minimum generic ARM code for use by the bootblock. Processor-specific stuff and things that take place later in the boot process should go elsewhere. Change-Id: I7db0a77ee4bbad1ddecb193ea125d8941a50532b Signed-off-by: David Hendricks <dhendrix(a)chromium.org> --- src/arch/armv7/Makefile.inc | 4 +- src/arch/armv7/init/init.S | 104 ++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 105 insertions(+), 3 deletions(-) diff --git a/src/arch/armv7/Makefile.inc b/src/arch/armv7/Makefile.inc index b413d3e..1a1271f 100644 --- a/src/arch/armv7/Makefile.inc +++ b/src/arch/armv7/Makefile.inc @@ -142,9 +142,7 @@ endif CFLAGS += -D__KERNEL__ CFLAGS += -D__LINUX_ARM_ARCH__=7 -# FIXME(dhendrix): trying to split start.S apart... -crt0s = $(src)/arch/armv7/start.S -#crt0s = $(src)/arch/armv7/romstage.S +crt0s = $(src)/arch/armv7/init/init.S ldscripts = ldscripts += $(src)/arch/armv7/romstage.ld diff --git a/src/arch/armv7/init/init.S b/src/arch/armv7/init/init.S new file mode 100644 index 0000000..6e3ff81 --- /dev/null +++ b/src/arch/armv7/init/init.S @@ -0,0 +1,104 @@ +/* + * Early initialization code for ARMv7 architecture. + * + * This file is based off of the OMAP3530/ARM Cortex start.S file from Das + * U-Boot, which itself got the file from armboot. + * + * Copyright (c) 2004 Texas Instruments <r-woodruff2(a)ti.com> + * Copyright (c) 2001 Marius Gröger <mag(a)sysgo.de> + * Copyright (c) 2002 Alex Züpke <azu(a)sysgo.de> + * Copyright (c) 2002 Gary Jennejohn <garyj(a)denx.de> + * Copyright (c) 2003 Richard Woodruff <r-woodruff2(a)ti.com> + * Copyright (c) 2003 Kshitij <kshitij(a)ti.com> + * Copyright (c) 2006-2008 Syed Mohammed Khasim <x0khasim(a)ti.com> + * Copyright (c) 2013 The Chromium OS Authors + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#define __ASSEMBLY__ +#include <system.h> + +.globl _start +_start: b reset + ldr pc, _undefined_instruction + ldr pc, _software_interrupt + ldr pc, _prefetch_abort + ldr pc, _data_abort + ldr pc, _not_used + ldr pc, _irq + ldr pc, _fiq +_undefined_instruction: .word _undefined_instruction +_software_interrupt: .word _software_interrupt +_prefetch_abort: .word _prefetch_abort +_data_abort: .word _data_abort +_not_used: .word _not_used +_irq: .word _irq +_fiq: .word _fiq +_pad: .word 0x12345678 /* now 16*4=64 */ + + .balignl 16,0xdeadbeef +/************************************************************************* + * + * Startup Code (reset vector) + * + * do important init only if we don't start from memory! + * setup Memory and board specific bits prior to relocation. + * relocate armboot to ram + * setup stack + * + *************************************************************************/ + +reset: + /* + * set the cpu to SVC32 mode + */ + mrs r0, cpsr + bic r0, r0, #0x1f + orr r0, r0, #0xd3 + msr cpsr,r0 + + /* + * From Cortex-A Series Programmer's Guide: + * Only CPU 0 performs initialization. Other CPUs go into WFI + * to do this, first work out which CPU this is + * this code typically is run before any other initialization step + */ + mrc p15, 0, r1, c0, c0, 5 @ Read Multiprocessor Affinity Register + and r1, r1, #0x3 @ Extract CPU ID bits + cmp r1, #0 + bne wait_for_interrupt @ If this is not core0, wait + + /* Set V=0 in CP15 SCTRL register - for VBAR to point to vector */ + mrc p15, 0, r0, c1, c0, 0 @ Read CP15 SCTRL Register + bic r0, #CR_V @ V = 0 + mcr p15, 0, r0, c1, c0, 0 @ Write CP15 SCTRL Register + + /* Set vector address in CP15 VBAR register */ + ldr r0, =_start + mcr p15, 0, r0, c12, c0, 0 @Set VBAR + +/* Set stackpointer in internal RAM to call board_init_f */ +call_board_init_f: + ldr sp, =(CONFIG_SYS_INIT_SP_ADDR) + mov sp, r0 + bic sp, sp, #7 /* 8-byte alignment for ABI compliance */ + ldr r0,=0x00000000 + bl board_init_f + +wait_for_interrupt: + wfi + mov pc, lr @ back to my caller

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coreboot December 2012