Sun System Handbook - ISO 3.4 June 2011 Internal/Partner Edition | |||
|
|
Solution Type Technical Instruction Sure Solution 1002109.1 : Sun Fire[TM] 12K/15K/E20K/E25K: POST Overview
PreviouslyPublishedAs 203006
Applies to:Sun Fire 12K ServerSun Fire 15K Server Sun Fire E20K Server Sun Fire E25K Server All Platforms ***Checked for relevance on 27-May-2011*** GoalThis document is an overview of POST (Power -On Self Test) on the Sun Fire[TM] 12K/15K/E20K/E25K platform.SolutionWhen lpost executes for CPU it checks lpost versions on FPROM and SMS.POST is the software that takes control of hardware in SunFire 12K/15K/E20K/E25K domains at power on or equivalent reset. It probes, tests and configures the domain resources and transfers control to OBP. POST is a multi-threaded application (number of threads = number of processors + 1 for hpost). Domain processors are typically sequenced in parallel by hpost using local tests called lpost. The hpost componenthpost (Host POST) is the controlling entity of POST. It is part of the SMS package. Hpost communicates with several sms daemons, most notably HWAD and PCD. All platform hardware communication from hpost is done using hwad, across the console bus.The lpost componentslpost (local POST) is a component of hpost that is executed by a domain CPU. The CPU lpost tests are stored in FPROM on slot 0. The SC also has a disk copy of each lpost file in /opt/SUNWSMS/hostobjs.For non-System boards, such as IO and expander, the appropriate lpost image from the SC's disk is downloaded to the domain's memory. In all cases lpost is slave to hpost. Communication between the two is through SRAM on a specific I/O board. CPU lpost versionTo check the CPU lpost version on SC and FPROM (on SB) use the command given below.Example for domain A SBs:- v4u-15ka-sc0:sms-svc:1> flashupdate -d a -f /opt/SUNWSMS/hostobjs/sgcpu.flash -n Current System Board FPROM Information ======================================== CPU at SB2, FPROM 0: POST 03/05/04 11:28:00 Release 5.17.0 Build 6.4 I/F 12 OBP 03/05/04 11:27:00 Release 5.17.0 Build 6.4 Ver 03/05/04 11:28:00 Release 5.17.0 Build 6.4 CPU at SB2, FPROM 1: POST 03/05/04 11:28:00 Release 5.17.0 Build 6.4 I/F 12 OBP 03/05/04 11:27:00 Release 5.17.0 Build 6.4 Ver 03/05/04 11:28:00 Release 5.17.0 Build 6.4 Flash Image Information ========================== POST 03/05/04 11:28:00 Release 5.17.0 Build 6.4 I/F 12 OBP 03/05/04 11:27:00 Release 5.17.0 Build 6.4 Ver 03/05/04 11:28:00 Release 5.17.0 Build 6.4 Do you wish to update the FPROM (yes/no) N
To check lpost version for non-system boards use this command: starcat-sc0:sms-svc:29> cd /opt/SUNWSMS/hostobjs starcat-sc0:sms-svc:31> mcs -p pcilpost.elf | grep elf pcilpost.elf: SMI sun4u_Sun_Fire_15K pcilpost.elf 5.17.0 Fri Mar 5 19:30:41 GMT 2004 starcat-sc0:sms-svc:33> mcs -p caged_pcilpost.elf | grep elf caged_pcilpost.elf: SMI sun4u_Sun_Fire_15K caged_pcilpost.elf 5.17.0 Fri Mar 5 19:30:41 GMT 2004 starcat-sc0:sms-svc:34> mcs -p explpost.elf | grep elf explpost.elf: SMI sun4u_Sun_Fire_15K explpost.elf 5.17.0 Fri Mar 5 19:31:30 GMT 2004 POST order of operation.
Invoking POST
POST special cases1. Split Expander:- To deal with this, POST examines the PCD for information on all 18 possible domains. If a domain is listed as active, then the expander boards associated with all active slots in that domain are considered active. These Expander boards and ASICs on them are assumed to have been tested and configured by previous POST process. POST will modify the configuration of the split expander, but in a manner that does not impact the running domain. If POST finds discrepancies or errors when examining the split expander, such as misconfigured ASICs or a domain stop condition, it will abandon the slot it is using on that expander, reporting it as failed.If the expander is not in use then POST assumes ownership of the full EXB and configures it. To avoid a race condition of two different POST taking ownership of the same expander, a lock file gets created by hpost ($SMSVAR/.lock/hpost.lock.nn). 2. DR attach of an I/O board:- At attach time, DR arranges for CPU and memory from slot0 SB to run hpost. POST creates a transaction/error cage consisting of loaned processor, memory and the I/O board being tested. During POST, the cage prevents transactions from the board under test from routing to any other configured components of the running domain. After post is complete, CPU and memory are released to SunOS and I/O board is introduced into the running domain. Internal information and links There are few hpost command line options that are useful to know about and understand. Be aware that running hpost directly will not bring a domain online. POST will only configure and test hardware. It does not download OBP or initiate SunOS boot process.
Customers often change domain/platform postrc directive to level 7 in order to save time. It is highly discouraged to change to level 7 in postrc. For post level details and .postrc directives refer to http://esp.west.sun.com/starcat/post/ 12k, 15K, 20K, 25K, hpost, lpost, ibist, lbist, hostobjs, flashupdate, post Previously Published As 76758 Change History Date: 2009-11-18 User Name: Volkmar Grote 117021 Action: Changed audience to "Contract" Comment: Moved internal links and details into a new Internal Comments section Date: 2005-05-05 User Name: 71396 Action: Approved Comment: Publishing. Version: 4 Date: 2005-05-02 User Name: 71396 Action: Accept Comment: Version: 0 Date: 2005-05-02 User Name: 26525 Action: Approved Comment: I just added a link to PTS's new web page http://pts-platform.uk Version: 0 Date: 2005-04-29 User Name: 26525 Action: Update Started Comment: PTS web page is changing to a new location http://pts-platform.uk Version: 0 Date: 2004-11-24 User Name: 97961 Action: Approved Comment: Minor update to title to cover other servers. Publishing without another round of TR. Version: 2 Date: 2004-11-24 User Name: 97961 Action: Accept Comment: Version: 0 Date: 2004-11-24 User Name: 71349 Action: Approved Comment: Added E20K and E25K to product and changed the title from POST Overview (12K/15K/20K/25K) to Sun Fire[TM] 12K/15K/E20K/E25K: POST Overview Version: 0 Date: 2004-11-24 User Name: 71349 Action: Update Started Comment: Title need to be updated Version: 0 Date: 2004-06-29 User Name: 25440 Action: Approved Comment: Edits for clarity (and the table was producing broken XML). Publishing Version: 0 Date: 2004-06-29 User Name: 25440 Action: Accepted Comment: Version: 0 Date: 2004-06-23 User Name: 28745 Action: Approved Comment: Doc looks fine Version: 0 Date: 2004-06-22 User Name: 136218 Action: Approved Comment: Remco, Modified my DOC. Please review it. Version: 0 Date: 2004-06-10 User Name: 28745 Action: Rejected Comment: Send and email to the writer with my comments. Setting it back to draft state for some modification. Version: 0 Date: 2004-06-09 User Name: 28745 Action: Accepted Comment: Version: 0 Date: 2004-06-08 User Name: 136218 Action: Approved Comment: kindly review and let me know your comments. Version: 0 Date: 2004-06-07 User Name: 136218 Action: Created Comment: Version: 0 Product_uuid Attachments This solution has no attachment |
||||||||||||||||||||||||||||||||||
|