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path: root/src/include/device/dram/ddr2.h
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2018-04-09device/dram/ddr2.c: Add methods to compute to identify dramArthur Heymans
DDR2 DIMMs are uniquely defined by SPD byte 64 till 72 and 93 till 98. Compute a crc16 over that data to provide a solid way to check DIMM identify. Reuse the crc16 function from ddr3.c to do this. Change-Id: I3c0c42786197f9b4eb3e42261c10ff5e4266120f Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/23345 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
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>
2017-09-22device/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>
2017-09-06device/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)