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path: root/src/device/dram/ddr4.c
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2021-04-05device/dram/ddr4.h: Align with DDR3 and DDR2Angel Pons
Drop unnecessary typedefs and rename DDR4-specific definitions to avoid name clashes, as done for DDR3 in earlier commits. This allows including and using both DDR3 and DDR4 headers in the same compilation unit. Change-Id: I17f1cd88f83251ec23e9783a617f4d2ed41b07f0 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/51898 Reviewed-by: Michael Niewöhner <foss@mniewoehner.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-09-16device/dram: Add method for converting MHz to MT/sRob Barnes
Add method for converting DDR4 speed in MHz to MT/s. Checks that MHz is within a speed grade range. BUG=b:167155849 TEST=ddr4-test unit test BRANCH=Zork Change-Id: I1433f028afb794fe3e397b03f5bd0565494c8130 Signed-off-by: Rob Barnes <robbarnes@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/45343 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org> Reviewed-by: Furquan Shaikh <furquan@google.com>
2020-05-11treewide: Remove "this file is part of" linesPatrick Georgi
Stefan thinks they don't add value. Command used: sed -i -e '/file is part of /d' $(git grep "file is part of " |egrep ":( */\*.*\*/\$|#|;#|-- | *\* )" | cut -d: -f1 |grep -v crossgcc |grep -v gcov | grep -v /elf.h |grep -v nvramtool) The exceptions are for: - crossgcc (patch file) - gcov (imported from gcc) - elf.h (imported from GNU's libc) - nvramtool (more complicated header) The removed lines are: - fmt.Fprintln(f, "/* This file is part of the coreboot project. */") -# This file is part of a set of unofficial pre-commit hooks available -/* This file is part of coreboot */ -# This file is part of msrtool. -/* This file is part of msrtool. */ - * This file is part of ncurses, designed to be appended after curses.h.in -/* This file is part of pgtblgen. */ - * This file is part of the coreboot project. - /* This file is part of the coreboot project. */ -# This file is part of the coreboot project. -# This file is part of the coreboot project. -## This file is part of the coreboot project. --- This file is part of the coreboot project. -/* This file is part of the coreboot project */ -/* This file is part of the coreboot project. */ -;## This file is part of the coreboot project. -# This file is part of the coreboot project. It originated in the - * This file is part of the coreinfo project. -## This file is part of the coreinfo project. - * This file is part of the depthcharge project. -/* This file is part of the depthcharge project. */ -/* This file is part of the ectool project. */ - * This file is part of the GNU C Library. - * This file is part of the libpayload project. -## This file is part of the libpayload project. -/* This file is part of the Linux kernel. */ -## This file is part of the superiotool project. -/* This file is part of the superiotool project */ -/* This file is part of uio_usbdebug */ Change-Id: I82d872b3b337388c93d5f5bf704e9ee9e53ab3a9 Signed-off-by: Patrick Georgi <pgeorgi@google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/41194 Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2020-04-04src/device: Use SPDX for GPL-2.0-only filesAngel Pons
Done with sed and God Lines. Only done for C-like code for now. Change-Id: Id5fe26564147ec532850430ea55b19ee94d5c5a5 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/40050 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>
2019-12-11printf: Automatically prefix %p with 0xJulius Werner
According to the POSIX standard, %p is supposed to print a pointer "as if by %#x", meaning the "0x" prefix should automatically be prepended. All other implementations out there (glibc, Linux, even libpayload) do this, so we should make coreboot match. This patch changes vtxprintf() accordingly and removes any explicit instances of "0x%p" from existing format strings. How to handle zero padding is less clear: the official POSIX definition above technically says there should be no automatic zero padding, but in practice most other implementations seem to do it and I assume most programmers would prefer it. The way chosen here is to always zero-pad to 32 bits, even on a 64-bit system. The rationale for this is that even on 64-bit systems, coreboot always avoids using any memory above 4GB for itself, so in practice all pointers should fit in that range and padding everything to 64 bits would just hurt readability. Padding it this way also helps pointers that do exceed 4GB (e.g. prints from MMU config on some arm64 systems) stand out better from the others. Change-Id: I0171b52f7288abb40e3fc3c8b874aee14b9bdcd6 Signed-off-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/37626 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Patrick Georgi <pgeorgi@google.com> Reviewed-by: David Guckian
2019-10-08device/dram/ddr4: Check spd_bytes_total and spd_bytes_used valuesElyes HAOUAS
The value stored to 'spd_bytes_total' is never read. Now it is fixed. This is spotted using clang-tool v9. Also add a check if spd_bytes_used and/or spd_bytes_total are reserved and make sure that spd_bytes_used is not greater than spd_bytes_total. Change-Id: I426a7e64cc4c0bcced91d03387e02c8d965a21dc Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/35558 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2019-09-17AUTHORS: Move src/device copyrights into AUTHORS fileMartin Roth
As discussed on the mailing list and voted upon, the coreboot project is going to move the majority of copyrights out of the headers and into an AUTHORS file. This will happen a bit at a time, as we'll be unifying license headers at the same time. Additional cleanup - Unify "Inc" to "Inc." and "LLC." to "LLC" Signed-off-by: Martin Roth <martin@coreboot.org> Change-Id: Ie03a3ce1f6085494bd5f38da76e2467970cf301a Reviewed-on: https://review.coreboot.org/c/coreboot/+/35430 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2019-08-14dram: Add basic DDR4 SPD parsingAndrey Petrov
Add ability to decode basic fields of DDR4 SPDs and produce SMBIOS table 17. XMP, schemas, extended field parising is totally not yet implemented. Also, put CRC function used in DDR2, DDR3 and DDR4 ina common file. Signed-off-by: Andrey Petrov <anpetrov@fb.com> Change-Id: If3befbc55cf37e1018baa432cb2f03743b929211 Reviewed-on: https://review.coreboot.org/c/coreboot/+/34680 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Matt DeVillier <matt.devillier@gmail.com> Reviewed-by: David Hendricks <david.hendricks@gmail.com>