coreboot.git - my copy of coreboot

Age	Commit message (Collapse)	Author
2012-11-12	Utility to dump boot timing table	Vadim Bendebury
	Coreboot and u-boot create a table of timestamps which allows to see the boot process performance. The util/cbmem/cbmem.py script allows to access the table after ChromeOS boots up and display its contents on the console. The problem is that shipping images do not include Python interpreter, so there is no way to access the table on a production machine. This change introduces a utility which is a Linux app displaying the timestamp table. Conceivably the output of this utility might be included in one of the ChromeOS :/system sections, so it was attempted to write this procedure 'fail safe', namely reporting errors and not continuing processing if something goes wrong. Including of coreboot/src .h files will allow to keep the firmware timestamp implementation and this utility in sync in the future. Test: . build the utility (run 'make' while in chroot in util/cbmem) . copy `cbmem' and 'cbmem.py' to the target . run both utilities (limiting cbmem.py output to 25 lines or so) . observe that the generated tables are identical (modulo rounding up of int division, resulting in 1 ns discrepancies in some cases) localhost var # ./cbmem 18 entries total: 1:62,080 2:64,569 (2,489) 3:82,520 (17,951) 4:82,695 (174) 8:84,384 (1,688) 9:131,731 (47,347) 10:131,821 (89) 30:131,849 (27) 40:132,618 (769) 50:134,594 (1,975) 60:134,729 (134) 70:363,440 (228,710) 75:363,453 (13) 80:368,165 (4,711) 90:370,018 (1,852) 99:488,217 (118,199) 1000:491,324 (3,107) 1100:760,475 (269,150) localhost var # ./cbmem.py \| head -25 time base 4249800, total entries 18 1:62,080 2:64,569 (2,489) 3:82,520 (17,951) 4:82,695 (174) 8:84,384 (1,688) 9:131,731 (47,347) 10:131,821 (89) 30:131,849 (27) 40:132,618 (769) 50:134,594 (1,975) 60:134,729 (134) 70:363,440 (228,710) 75:363,453 (13) 80:368,165 (4,711) 90:370,018 (1,852) 99:488,217 (118,199) 1000:491,324 (3,107) 1100:760,475 (269,150) Change-Id: I013e594d4afe323106d88e7938dd40b17760621c Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Reviewed-on: http://review.coreboot.org/1759 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2012-11-08	Get more informative output from cbmem.py	Vadim Bendebury
	This is a cosmetic change which formats timestamp information retrieved by cbmem.py. Instead of printing timestamps in a single line, print them one per line and add time (in us) elapsed since the previous timestamp. time base 4149594, total entries 18 1:56,928 2:58,851 (1,923) 3:175,230 (116,378) 4:175,340 (109) 8:177,199 (1,859) 9:214,368 (37,168) 10:214,450 (81) 30:214,462 (11) 40:215,205 (743) 50:217,180 (1,974) 60:217,312 (132) 70:436,984 (219,671) 75:436,993 (8) 80:441,424 (4,431) 90:442,487 (1,062) 99:553,777 (111,289) 1000:556,513 (2,736) 1100:824,621 (268,107) Change-Id: I0d25cafe766c10377017697e6b206276e1a92992 Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Reviewed-on: http://review.coreboot.org/1716 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-11-08	Fix cbmem to work on 64 bit platforms	Vadim Bendebury
	For some reason which I fail to understand, specifying endiannes using '@' (which means 'native' and should be the same as '<' on x86 platforms) causes cbmem.py to crash the machine on 64 bit systems. What happens is that the addresses read from various table headers' struct representations do not make sense, when bogus address gets passed to get_phys_mem, the crash happens while that function is executed. dlaurie@ found out that replacing "@" with "<" in fact fixes the issue. After some investigation I am just submitting this fix without much understanding of the root cause. Change-Id: Iaba9bc72a3f6b1d0407a5f1e3b459ccf5063969d Signed-off-by: Duncan Laurie <dlaurie@chromium.org> Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Reviewed-on: http://review.coreboot.org/1715 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-03-30	Revamp cbmem.py to use the coreboot tables.	Gabe Black
	This change makes significant changes to cbmem.py to make it use the coreboot tables to find the memory console and timestamp areas instead of looking for the in memory table TOC structure. That appears to be more robust and gets cbmem.py working again after some unrelated changes that affected memory layout. It also introduces some small infrastructure to make accessing C style structures in physical memory easier and more transparent. Change-Id: I51833055a50c2d76423520ba6e059bf8fc50adea Signed-off-by: Gabe Black <gabeblack@google.com> Reviewed-on: http://review.coreboot.org/762 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-03-29	Introduce utility for parsing CBMEM contents.	Vadim Bendebury
	This is a python script which is supposed to run on a target which is controlled by coreboot. The script examines top of memory looking for the CBMEM signature at addresses aligned at 128K boundary. Once the script finds the CBMEM, it iterates through the CBMEM table of contents and parses two entries: the timestamps and the console log. This submission is just a template to build upon to create a utility for displaying CBMEM information while running Linux on the target. BUG=chrome-os-partner:4200 TEST=manual See test description of d81e6b8c8d41f2d6 for test procedure. Change-Id: Id863a8598eaadc2d20d728f9186843e65cbe6f37 Signed-off-by: Vadim Bendebury <vbendeb@chromium.org> Reviewed-on: https://gerrit-int.chromium.org/5942 Tested-by: Vadim Bendebury <vbendeb@google.com> Reviewed-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/723 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>