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2018-02-22device/ddr2,ddr3: Rename and move a few thingsArthur Heymans
In order for ddr2.h and ddr3.h to be included in the same file it cannot have conflicting definitions, therefore rename a few things and move some things to a common header. Change-Id: I6056148872076048e055f1d20a60ac31afd7cde6 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/23717 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
2017-12-20device/dram/ddr2.c: Store the checksum in the decoded SPD structArthur Heymans
Change-Id: I53f4a3e4030ea19e10c0fe11a99a3480644f5fae Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/21676 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Patrick Rudolph <siro@das-labor.org>
2017-09-26device/dram/ddr2.c: fix a hidden syntax error introduced earlierBill XIE
A regression is hidden in commit 7eb0157fca33865783c1cc3c8e5cb2e327e551d7 (device/dram/ddr2.c: Decoding byte[12] bit7 as self refresh flag ), which breaks the build procedure when CONFIG_DEBUG_RAM_SETUP is set. Maybe it had better implement "printram" and the like as inline functions instead of macros. Change-Id: If956435bd0c39b1f3e722c2cfc48d2d0f35abc9b Signed-off-by: Bill XIE <persmule@gmail.com> Reviewed-on: https://review.coreboot.org/21673 Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-by: Nico Huber <nico.h@gmx.de>
2017-09-22device/dram/ddr2.c: Decoding byte[12] bit7 as self refresh flagArthur Heymans
"Annex J: Serial Presence Detects for DDR2 SDRAM (Revision 1.3)" note 4 says bit7 of byte 12 indicates whether the assembly supports self refresh. This patch decodes this and modifies decoding tRR accordingly. Change-Id: I091121a5d08159cea4befdedb5f3a92ce132c6e5 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/21620 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
2017-09-22device/dram/ddr2: Add break to several case statements that lack itPatrick Georgi
For all valid SPD values the same decoded tRR was returned. Change-Id: Iec43f8c7460dfcf68f7c92dfdf333b004f368b65 Signed-off-by: Patrick Georgi <pgeorgi@google.com> Found-by: Coverity Scan #1381369, #1381370, 1381371, 1381372, 1381373 Reviewed-on: https://review.coreboot.org/21642 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Nico Huber <nico.h@gmx.de>
2017-09-20device/dram/ddr2.c: Improve error returning and debug outputArthur Heymans
This patch outputs decoding errors with BIOS_WARNING instead of depending on CONFIG_DEBUG_RAM_SETUP. Returns SPD_STATUS_INVALID on invalid settings for tRR, bcd and tCK and doesn't try to create a valid setting if an invalid setting is detected. Change-Id: Iee434d1fa1a9d911cc3683b88b260881ed6434ea Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/21480 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2017-09-16device/dram/ddr2: Fix decoding tRRArthur Heymans
Bit 7 is set on all options so only the default option in the switch statement is returned. Change-Id: I6a698ec9c15a2611a34c5965edf93638553775f0 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/21457 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Martin Roth <martinroth@google.com>
2017-09-06device/dram/ddr2: Add a function to normalize tCLKArthur Heymans
Also make most significant bit function accessible outside the scope of this file. Change-Id: I3ab39d38a243edddfde8f70ebd23f79ff774e90e Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/18320 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2017-06-09device/dram/ddr2.c: Fix is_registered_ddr2Arthur Heymans
Type 0x10 is mini RDIMM according to JEDEC DDR2 SPD specifications. Change-Id: I6d35bd74961326ebd9225f044313b107aca24bda Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/20058 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2017-03-10device/dram/ddr2: Add common ddr2 spd decoderPatrick Rudolph
Decode DDR2 SPD similar to DDR3 SPD decoder to ease readability, reduce code complexity and reduce size of maintainable code. Rename dimm_is_registered to spd_dimm_is_registered_ddr3 to avoid compilation errors. Change-Id: I741f0e61ab23e3999ae9e31f57228ba034c2509e Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: https://review.coreboot.org/18273 Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Tested-by: build bot (Jenkins)
2017-02-10ddr3 spd: move accessor code into lib/spd_bin.cPatrick Georgi
It's an attempt to consolidate the access code, even if there are still multiple implementations in the code. Change-Id: I4b2b9cbc24a445f8fa4e0148f52fd15950535240 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: https://review.coreboot.org/18265 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2017-02-10ddr3 spd: Rename read_spd_from_cbfs() to read_ddr3_spd_from_cbfs()Patrick Georgi
Since it checks for DDR3 style checksums, it's a more appropriate name. Also make its configuration local for a future code move. Change-Id: I417ae165579618d9215b8ca5f0500ff9a61af42f Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: https://review.coreboot.org/18264 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins)
2017-02-10device/dram: use global DIMM_SPD_SIZE Kconfig variablePatrick Georgi
Also make sure that no board changes behaviour because of that by adding a static assert. TEST=abuild over all builds still succeeds (where it doesn't if DIMM_SPD_SIZE isn't set to 128 bytes for boards that use the device/dram code). Change-Id: Iddb962b16857ee859ddcf1b52d18da9b3be56449 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: https://review.coreboot.org/18254 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins)
2017-01-10SPD_CACHE: Drop debug statementKyösti Mälkki
Output from CBFS functions is enough. Change-Id: I94d4a20a24f88eeacbe4aeb2e03a15974d18b16c Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/17923 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Martin Roth <martinroth@google.com>
2016-12-27device/dram/ddr3: add FTB timingsNicola Corna
SPD revision 1.1 introduced FTB timings, an extra set of SPD values that specify a more precise tCKmin, tAAmin, tRCDmin, tRPmin and tRCmin. For backwards compatibility, the MTB is usually rounded up and the FTB part is negative. For this reason some memories were not set up optimally, as the FTB part was ignored and the resulting timing wasn't set to the minimum value. The tests were performed on a Lenovo X220 with two Micron 8KTF51264HZ-1G9E (1866 MHz): reading only the MTB part, coreboot reports a tCKmin of 1.125 ns, corresponding to a working frequency of 800 MHz; with the additional tCKmin FTB part (-0.054 ns) the new (rounded) value is 1.070 ns, valid for a 933 MHz operation. Tested also with Ballistix DDR3-1866 SODIMM on Lenovo T420: the memory is now detected as DDR3-1866 instead of DDR3-1600. Some manufacturers (like Micron) seems to expect a small rounding on the timings, so a nearest-value rounding is performed. If this assumption isn't correct, an error up to ~2 ps can be committed, which is low enough to be safely ignored. Change-Id: Ib98f2e70820f207429d04ca6421680109a81f457 Signed-off-by: Nicola Corna <nicola@corna.info> Reviewed-on: https://review.coreboot.org/17476 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Rudolph <siro@das-labor.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2016-11-21device/dram/ddr3: Fix calculation CRC16 of SPDKyösti Mälkki
Fix regression with commit: 7dc4b84 device/dram/ddr3: Calculate CRC16 of SPD unique identifier Misplaced parenthesis causes CRC check failure, potentially rendering some platform unbootable. Change-Id: I9699ee2ead5b99c7f46f6f4682235aae3125cca6 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/17550 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org>
2016-11-20device/dram/ddr3: Calculate CRC16 of SPD unique identifierKyösti Mälkki
Specification allows for the unique identifier bytes 117..125 to be excluded of CRC calculation. For such SPD, the CRC would not identify replacement between two identical DIMM parts, while memory training needs to be redone. Change-Id: I8e830018b15c344d9f72f921ab84893f633f7654 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/17486 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Rudolph <siro@das-labor.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2016-03-21device/dram/ddr3: fix debug outputPatrick Rudolph
Add missing punctuation and align output. No functionality is changed. Old logging output: Revision: 11 Type : b Key : 2 Banks : 8 Capacity: 4 Gb Supported voltages: 1.5V SDRAM width : 8 Bus extension : 0 bits Bus width : 64 Optional features : DLL-Off_mode RZQ/7 RZQ/6 Thermal features : ASR ext_temp_range Thermal sensor : no Standard SDRAM : yes DIMM Rank1 Address bits mirrored!!! DIMM Reference card B DIMM Manufacturer ID cd04 DIMM Part number F3-1866C9-8GSR XMP Profile 1 Max DIMMs per channel: 4 XMP Revision: 1.3 Requested voltage: 1500 mV New logging output: Revision : 11 Type : b Key : 2 Banks : 8 Capacity : 4 Gb Supported voltages : 1.5V SDRAM width : 8 Bus extension : 0 bits Bus width : 64 Optional features : DLL-Off_mode RZQ/7 RZQ/6 Thermal features : ASR ext_temp_range Thermal sensor : no Standard SDRAM : yes Rank1 Address bits : mirrored DIMM Reference card: B Manufacturer ID : cd04 Part number : F3-1866C9-8GSR XMP Profile : 1 Max DIMMs/channel : 4 XMP Revision : 1.3 Requested voltage : 1500 mV Change-Id: Iee4d7a7c0e1070706fb60d7316fad49813963b51 Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: https://review.coreboot.org/14083 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Martin Roth <martinroth@google.com>
2016-03-03src/device/dram/ddr3: Parse additional informationPatrick Rudolph
Parse manufacturer id and ASCII serial. Required for SMBIOS type 17 field. Change-Id: I710de1a6822e4777c359d0bfecc6113cb2a5ed8e Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: https://review.coreboot.org/13862 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>
2016-02-20nb/intel/sandybridge/raminit: Add XMP supportPatrick Rudolph
Some vendors store lower frequency profiles in the regular SPD, if the SPD contains a XMP profile. To make use of the board's and DIMM's maximum supported DRAM frequency, try to parse the XMP profile and use it instead. Validate the XMP profile to make sure that the installed DIMM count per channel is supported and the requested voltage is supported. To reduce complexity only XMP Profile 1 is read. Allows my DRAM to run at 800Mhz instead of 666Mhz as encoded in the default SPD. Test system: * Gigabyte GA-B75M-D3H * Intel Pentium CPU G2130 Change-Id: Ib4dd68debfdcfdce138e813ad5b0e8e2ce3a40b2 Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: https://review.coreboot.org/13486 Reviewed-by: Martin Roth <martinroth@google.com> Tested-by: build bot (Jenkins)
2015-10-31tree: drop last paragraph of GPL copyright headerPatrick Georgi
It encourages users from writing to the FSF without giving an address. Linux also prefers to drop that and their checkpatch.pl (that we imported) looks out for that. This is the result of util/scripts/no-fsf-addresses.sh with no further editing. Change-Id: Ie96faea295fe001911d77dbc51e9a6789558fbd6 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/11888 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2015-06-23ddr3: add missing newlinePatrick Rudolph
Add missing newline to SPD CRC verification error message. Verified by testing this code on Intel IvyBridge and Gigabyte GA-B75M-D3H. Change-Id: Id1a0a2329507975c3f66ab884f6e26d99003318e Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: http://review.coreboot.org/10636 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com> Reviewed-by: Nicolas Reinecke <nr@das-labor.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2015-06-23ddr3: Fix SPD CRC calculationPatrick Rudolph
Use the correct SPD size for crc calculation. sizeof(*spd) returns 4 while sizeof(spd_raw_data) returns the expected value of 256. Fixes erroneous printing of "ERROR: SPD CRC failed!!!" in raminit log. Verified by testing this code on Intel IvyBridge and Gigabyte GA-B75M-D3H. Change-Id: Iba305c69debd64fa921e08e00ec0a3531c80f56f Signed-off-by: Patrick Rudolph <siro@das-labor.org> Reviewed-on: http://review.coreboot.org/10629 Tested-by: build bot (Jenkins) Reviewed-by: Nicolas Reinecke <nr@das-labor.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-06-02cbfs: new API and better program loadingAaron Durbin
A new CBFS API is introduced to allow making CBFS access easier for providing multiple CBFS sources. That is achieved by decoupling the cbfs source from a CBFS file. A CBFS source is described by a descriptor. It contains the necessary properties for walking a CBFS to locate a file. The CBFS file is then decoupled from the CBFS descriptor in that it's no longer needed to access the contents of the file. All of this is accomplished using the regions infrastructure by repsenting CBFS sources and files as region_devices. Because region_devices can be chained together forming subregions this allows one to decouple a CBFS source from a file. This also allows one to provide CBFS files that came from other sources for payload and/or stage loading. The program loading takes advantage of those very properties by allowing multiple sources for locating a program. Because of this we can reduce the overhead of loading programs because it's all done in the common code paths. Only locating the program is per source. Change-Id: I339b84fce95f03d1dbb63a0f54a26be5eb07f7c8 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/9134 Tested-by: build bot (Jenkins) Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-05-21Remove address from GPLv2 headersPatrick Georgi
As per discussion with lawyers[tm], it's not a good idea to shorten the license header too much - not for legal reasons but because there are tools that look for them, and giving them a standard pattern simplifies things. However, we got confirmation that we don't have to update every file ever added to coreboot whenever the FSF gets a new lease, but can drop the address instead. util/kconfig is excluded because that's imported code that we may want to synchronize every now and then. $ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *MA[, ]*02110-1301[, ]*USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 59 Temple Place[-, ]*Suite 330, Boston, MA *02111-1307[, ]*USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.:Foundation, Inc.:" {} + $ find * -type f -a \! -name \*.patch \ -a \! -name \*_shipped \ -a \! -name LICENSE_GPL \ -a \! -name LGPL.txt \ -a \! -name COPYING \ -a \! -name DISCLAIMER \ -exec sed -i "/Foundation, Inc./ N;s:Foundation, Inc.* USA\.* *:Foundation, Inc. :;s:Foundation, Inc. $:Foundation, Inc.:" {} + Change-Id: Icc968a5a5f3a5df8d32b940f9cdb35350654bef9 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/9233 Tested-by: build bot (Jenkins) Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
2015-04-01cbfs: correct types used for accessing filesAaron Durbin
In commit 72a8e5e751a7fa97c9d198f68cad49f9d9851669 the Makefile's were updated to use named types for cbfs file addition. However, the call sites were not checked to ensure the types matched. Correct all call sites to use the named types. Change-Id: Ib9fa693ef517e3196a3f04e9c06db52a9116fee7 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/9195 Tested-by: build bot (Jenkins) Reviewed-by: Marc Jones <marc.jones@se-eng.com>
2015-01-12src/device: Doxygen fixesMartin Roth
- Add missing parameters - add missing @param commands Change-Id: I029b5dafde94bd250800b06c0e9bd2118f10ef48 Signed-off-by: Martin Roth <gaumless@gmail.com> Reviewed-on: http://review.coreboot.org/8173 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
2014-12-19spd_cache debug: Log invalid CRC checksumTobias Diedrich
"SPD has a invalid or zero-valued CRC" is not a very useful message, so show the actual and expected values. Change-Id: I31a1cdacc82240c699627769d490b94f5d378e86 Signed-off-by: Tobias Diedrich <ranma+coreboot@tdiedrich.de> Reviewed-on: http://review.coreboot.org/7393 Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-12-07ddr3: Plumber DIMM type to parsed structure.Vladimir Serbinenko
Useful for distinguishing registered modules. Change-Id: Ibf4a0f2cde6d50a1c5c1da0f50e3022a2bc7ccd7 Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Reviewed-on: http://review.coreboot.org/7686 Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Tested-by: build bot (Jenkins)
2014-11-08device/dram/ddr3.c: Fix sizeof on array func param overflowEdward O'Callaghan
The sizeof on array function parameter will return size of 'u8 *' instead of 'spd_raw_data' (aka 'u8 [256]' leading to an overflow. Found-by: Clang Change-Id: I78e113a640b2953c853eb43bd6874e4694260b1f Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-on: http://review.coreboot.org/7353 Tested-by: build bot (Jenkins) Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
2014-07-29sandy/ivybridge: Native raminit.Vladimir Serbinenko
Based on damo22's work and my X230 tracing. Works for my X230 in a variety of RAM configs. Also-By: Damien Zammit <damien@zamaudio.com> Change-Id: I1aa024c55a8416fc53b25e7123037df0e55a2769 Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com> Signed-off-by: Damien Zammit <damien@zamaudio.com> Reviewed-on: http://review.coreboot.org/5786 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
2014-07-05gizmosphere/gizmo: Move support of SPD data in CBFSKyösti Mälkki
This code is not specific to any board or AGESA family. Change-Id: I26c32fbe8e45018e239762b072dfe3da05271697 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5690 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2013-12-17device/dram/ddr3: Move CRC calculation in a separate functionAlexandru Gagniuc
Calculating the CRC of a SPD may be useful by itself, so split that part of the code in a separate function. Change-Id: I6c20d3db380551865126fd890e89de6b06359207 Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-on: http://review.coreboot.org/4537 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-07-10device: Fix spellingMartin Roth
Change-Id: I53a40d114aa2da76398c5b97443d4096809dcf36 Signed-off-by: Martin Roth <martin.roth@se-eng.com> Reviewed-on: http://review.coreboot.org/3730 Reviewed-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Tested-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-06-04DDR3: Add utilities for creating MRS commandsAlexandru Gagniuc
MRS commands are used to tell the DRAM chip what timing and what termination and drive strength to use, along with other parameters. The MRS commands are defined by the DDR3 specification [1]. This makes MRS commands hardware-independent. MRS command creation is duplicated in various shapes and forms in any chipset that does DDR3. This is an effort to create a generic MRS API that can be used with any chipset. This is used in the VX900 branch. [1] www.jedec.org/sites/default/files/docs/JESD79-3E.pdf Change-Id: Ia8bb593e3e28a5923a866042327243d798c3b793 Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-on: http://review.coreboot.org/3354 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-06-03dram: Add utilities for decoding DDR3 SPDsAlexandru Gagniuc
Add convenience utilities for decoding DDR3 SPDs and printing the information to the console. These have proven invaluable when writing the VX900 memory initialization. These are used in the VX900 branch Information printed has the following format: > SPD Data for DIMM 51 > Revision: 10 > Type : b > Key : 2 > Banks : 8 > Capacity: 1 Gb > Supported voltages: 1.5V > SDRAM width : 8 > Bus extension : 0 bits > Bus width : 64 > Optional features : DLL-Off_mode RZQ/7 RZQ/6 > Thermal features : ASR ext_temp_range > Thermal sensor : no > Standard SDRAM : no > Row addr bits : 13 > Column addr bits : 10 > Number of ranks : 1 > DIMM Capacity : 1024 MB > CAS latencies : 6 7 8 9 > tCKmin : 1.500 ns > tAAmin : 13.125 ns > tWRmin : 15.000 ns > tRCDmin : 13.125 ns > tRRDmin : 6.000 ns > tRPmin : 13.125 ns > tRASmin : 36.000 ns > tRCmin : 49.125 ns > tRFCmin : 110.000 ns > tWTRmin : 7.500 ns > tRTPmin : 7.500 ns > tFAWmin : 30.000 ns Change-Id: I30725a75caf74ac637db0a143344562bd9910466 Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-on: http://review.coreboot.org/3267 Tested-by: build bot (Jenkins)
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