coreboot March 2012

coreboot@coreboot.org

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Patch merged into coreboot/master: 0a6ff20 CBMEM CONSOLE: Enable coreboot CBMEM console.
by gerrit＠coreboot.org 29 Mar '12

29 Mar '12

the following patch was just integrated into master: commit 0a6ff20863a56b13497274ccf7642b51a7b980f3 Author: Vadim Bendebury <vbendeb(a)chromium.org> Date: Fri Sep 30 12:02:18 2011 -0700 CBMEM CONSOLE: Enable coreboot CBMEM console. The appropriate Makefiles are modified to include the required source code in compilation. Change-Id: I91842b1ba0f89d611d3249b63c020a2713a9124f Signed-off-by: Vadim Bendebury <vbendeb(a)chromium.org> Build-Tested: build bot (Jenkins) at Fri Mar 9 19:31:23 2012, giving +1 See http://review.coreboot.org/722 for details. -gerrit

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Patch merged into coreboot/master: 1b009f6 CBMEM CONSOLE: Add code using the new console driver.
by gerrit＠coreboot.org 29 Mar '12

29 Mar '12

the following patch was just integrated into master: commit 1b009f69c858be9f41a76defa53672fe40f24c0f Author: Vadim Bendebury <vbendeb(a)chromium.org> Date: Fri Sep 30 11:16:49 2011 -0700 CBMEM CONSOLE: Add code using the new console driver. The new added code is compiled in when the CBMEM_CONSOLE config flag is enabled. Change-Id: Ifd1f492ce6321412a014333babbc5b3f14635988 Signed-off-by: Vadim Bendebury <vbendeb(a)chromium.org> Build-Tested: build bot (Jenkins) at Wed Mar 28 21:46:33 2012, giving +1 See http://review.coreboot.org/721 for details. -gerrit

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Patch merged into coreboot/master: 6251af7 CBMEM CONSOLE: Add CBMEM type for console buffer.
by gerrit＠coreboot.org 29 Mar '12

29 Mar '12

the following patch was just integrated into master: commit 6251af759c8528e3a97abf5e0ba03101af387b10 Author: Vadim Bendebury <vbendeb(a)chromium.org> Date: Fri Sep 30 11:13:06 2011 -0700 CBMEM CONSOLE: Add CBMEM type for console buffer. Add CBMEM type for the console buffer section. Change-Id: I02757c06d71e46af77b02b90b0e6018a37b62406 Signed-off-by: Vadim Bendebury <vbendeb(a)chromium.org> Build-Tested: build bot (Jenkins) at Fri Mar 9 19:02:59 2012, giving +1 See http://review.coreboot.org/720 for details. -gerrit

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Patch merged into coreboot/master: d16cd96 CBMEM CONSOLE: Add CBMEM console driver implementation.
by gerrit＠coreboot.org 29 Mar '12

29 Mar '12

the following patch was just integrated into master: commit d16cd960d632db676f0928cb44a53950721c737e Author: Vadim Bendebury <vbendeb(a)chromium.org> Date: Thu Sep 29 17:27:15 2011 -0700 CBMEM CONSOLE: Add CBMEM console driver implementation. The CBMEM console driver saves console output in a CBMEM area, which then is made available to Linux applications for perusing. There are some system limitations which need to be worked around to achieve this goal: - some console traffic is generated before DRAM is initialized, leave alone CBMEM initialized. - after the RAM based stage starts, a lot of traffic is generated before CBMEM is initialized. As a result, the console log lives in three different places - the bottom of the cache as RAM space, the CBMEM buffer (where it is expected to be) and a static buffer used early in the RAM stage. When execution starts (in the cache as RAM mode), the console buffer is allocated at the bottom of the cache as RAM memory address range. Once DRAM is initialized, the CBMEM structure is initialized, and then the console buffer contents are copied from the bottom of the cache as RAM space into the CBMEM area right before the cache as RAM mode is disabled. The src/lib/cbmem_console.c:cbmemc_reinit() takes care of the copying. At this point the cache as RAM memory is about to be disabled, but the ROM stage is still going generating console output. To make sure this output is not lost, cbmemc_reinit() saves the new buffer address at a fixed location (0x600 was chosen for this), and the actual "printing" function checks to see if the RAM is already initialized (the stack is in RAM), and if so, gets the console buffer pointer from this location instead of using the cache as RAM address. When the RAM stage starts, a static buffer is used to store the console output, as the CBMEM buffer location is not known. Then, when CBMEM is reinitialized, cbmemc_reinit() again takes care of the copying. In case the allocated buffers are not large enough, the excessive data is dropped, and the copying routine adds some text to the output buffer to indicate that there has been data lost and how many characters were dropped. Change-Id: I8c126e31db6cb2141f7f4f97c5047f39a8db44fc Signed-off-by: Vadim Bendebury <vbendeb(a)chromium.org> Build-Tested: build bot (Jenkins) at Fri Mar 9 16:00:41 2012, giving +1 See http://review.coreboot.org/719 for details. -gerrit

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Patch merged into coreboot/master: 44ea2b8 CBMEM CONSOLE: Add config option for CBMEM stored console log.
by gerrit＠coreboot.org 29 Mar '12

29 Mar '12

the following patch was just integrated into master: commit 44ea2b8d2a83c1fbfb5c93112dfc04b8956137f1 Author: Vadim Bendebury <vbendeb(a)chromium.org> Date: Wed Sep 28 13:51:30 2011 -0700 CBMEM CONSOLE: Add config option for CBMEM stored console log. Some experiments have demonstrated that total amount of text generated by coreboot console when BIOS_SPEW level is enabled exceeds 40KB. Console output generated before DRAM is initialized can exceed 2KB. This patch introduces the new configuration option and assigns adequate default values to cache based and DRAM based console buffers. BUG=chrome-os-partner:4200 TEST=manual . run the following commands in the root directory cp config.stumpy .config make menuconfig . enable the new option (Console->Send console output to a CBMEM buffer) . save the configuration Observe the following settings added to the config: +CONFIG_CONSOLE_CBMEM=y +CONFIG_CONSOLE_CBMEM_BUFFER_SIZE=0xae00 +CONFIG_CONSOLE_CAR_BUFFER_SIZE=0xc00 Change-Id: I209603f516244ae136631e6281ba21ebc6fb1710 Signed-off-by: Vadim Bendebury <vbendeb(a)chromium.org> Reviewed-on: https://gerrit-int.chromium.org/5855 Tested-by: Vadim Bendebury <vbendeb(a)google.com> Reviewed-by: Stefan Reinauer <reinauer(a)google.com> Build-Tested: build bot (Jenkins) at Fri Mar 9 16:26:32 2012, giving +1 See http://review.coreboot.org/718 for details. -gerrit

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Patch merged into coreboot/master: 0f2bcd9 Increase CBMEM to accommodate larger console.
by gerrit＠coreboot.org 29 Mar '12

29 Mar '12

the following patch was just integrated into master: commit 0f2bcd99cd43691d0ab77d2bf1bacc83ef8dabde Author: Vadim Bendebury <vbendeb(a)chromium.org> Date: Tue Oct 4 10:44:16 2011 -0700 Increase CBMEM to accommodate larger console. This change adds 128K to the memory amount set aside for CBMEM in case the CBMEM console is enabled (to keep the CBMEM 128K byte aligned). The console buffer size is being set to 64K, which is enough to accommodate the most verbose coreboot console and u-boot console. Change-Id: If583013dfb210de5028d69577675095c6fe2f3ab Signed-off-by: Vadim Bendebury <vbendeb(a)chromium.org> Build-Tested: build bot (Jenkins) at Fri Mar 9 21:05:51 2012, giving +1 See http://review.coreboot.org/725 for details. -gerrit

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Can I use gdb debug tool with coreboot v4.0?
by Julian Shulika 29 Mar '12

29 Mar '12

Hi , everyone! Can I use gdb debug tool with coreboot v4.0? This information is oudated coreboot has an easy to use interface to the GNU debugger gdb. To enable it, add the following two lines to your mainboard's Options.lb: uses CONFIG_GDB_STUB ... default CONFIG_GDB_STUB=1

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Re: [coreboot] porting Coreboot to a new motherboard....
by Peter Stuge 28 Mar '12

28 Mar '12

ali hagigat wrote: > Besides I checked RAM by ramcheck() function of Coreboot. This means nothing. > I will test it finally by memtest(). Do two instances of testing, one with memtest86, one with memtest86+. > But i am believing that the problem is some where else. Yes this is obvious to everyone, and you continue to make yourself look really bad by insisting that everyone else with more experience is a fool and that you are the only expert. //Peter

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Patch merged into coreboot/master: 884dcde Add cmos helper functions for reading/writing a dword
by gerrit＠coreboot.org 28 Mar '12

28 Mar '12

the following patch was just integrated into master: commit 884dcdef1ee04a23ccf25d29cf4fcce2087b47af Author: Duncan Laurie <dlaurie(a)chromium.org> Date: Mon Sep 26 13:24:40 2011 -0700 Add cmos helper functions for reading/writing a dword These get used later for saving/restoring the MRC scrambler seed values on each boot. Change-Id: I6e23f17649bea6d22c4b279ed8d0e5cb6c0885e7 Signed-off-by: Duncan Laurie <dlaurie(a)google.com> Build-Tested: build bot (Jenkins) at Fri Mar 9 15:18:00 2012, giving +1 Reviewed-By: Stefan Reinauer <stefan.reinauer(a)coreboot.org> at Wed Mar 28 21:35:10 2012, giving +2 See http://review.coreboot.org/717 for details. -gerrit

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Patch merged into coreboot/master: 5a0823a selfboot: Allow loading SeaBIOS into a reserved region in the lower 1MB
by gerrit＠coreboot.org 28 Mar '12

28 Mar '12

the following patch was just integrated into master: commit 5a0823a0717c4c8ecf0f750ad98ce07c556b939a Author: Stefan Reinauer <reinauer(a)chromium.org> Date: Tue Oct 18 15:11:04 2011 -0700 selfboot: Allow loading SeaBIOS into a reserved region in the lower 1MB This fixes loading SeaBIOS when lower memory is reserved. Change-Id: Idbdcaf95f3307f97307f304d6d677406d059927d Signed-off-by: Stefan Reinauer <reinauer(a)google.com> Build-Tested: build bot (Jenkins) at Sat Mar 10 04:37:04 2012, giving +1 See http://review.coreboot.org/732 for details. -gerrit

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coreboot March 2012