Gentoo Archives: gentoo-user

From: Mick <michaelkintzios@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] AMD microcode updates - where are they?!
Date: Sat, 13 Jul 2019 19:23:36
Message-Id: 3234975.s2AmX6VSSp@localhost
In Reply to: Re: [gentoo-user] AMD microcode updates - where are they?! by Corbin
1 On Saturday, 13 July 2019 19:16:18 BST Corbin wrote:
2 > For reference, the .config file for the kernel should have something
3 >
4 > along the lines of this:
5 > > #
6 > > # Firmware loader
7 > > #
8 > > CONFIG_FW_LOADER=y
9 > > CONFIG_EXTRA_FIRMWARE="amd-ucode/microcode_amd.bin
10 > > amd-ucode/microcode_amd_fam15h.bin amdgpu/polaris10_ce.bin
11 > > amdgpu/polaris10_ce_2.bin amdgpu/polaris10_k_smc.bin
12 > > amdgpu/polaris10_mc.bin amdgpu/polaris10_me.bin
13 > > amdgpu/polaris10_me_2.bin amdgpu/polaris10_mec.bin
14 > > amdgpu/polaris10_mec2.bin amdgpu/polaris10_mec2_2.bin
15 > > amdgpu/polaris10_pfp.bin amdgpu/polaris10_pfp_2.bin
16 > > amdgpu/polaris10_rlc.bin amdgpu/polaris10_sdma.bin
17 > > amdgpu/polaris10_sdma1.bin amdgpu/polaris10_smc.bin
18 > > amdgpu/polaris10_smc_sk.bin amdgpu/polaris10_uvd.bin
19 > > amdgpu/polaris10_vce.bin"
20 > > CONFIG_EXTRA_FIRMWARE_DIR="/lib/firmware/"
21 > > CONFIG_FW_LOADER_USER_HELPER=y
22
23 As I understand it the CONFIG_FW_LOADER_USER_HELPER has some edge use cases,
24 but is not needed for our hardware/firmware.
25
26
27 > CPU is a AMD FX-9590 ( Fam15h )
28 >
29 > Video is a RX480 ( Polaris 10 )
30 >
31 > And, yes, both microcode updates ( Fam10h / Fam15h ) need to be builtin.
32
33 Are you sure about this?
34
35 I added 'amd-ucode/microcode_amd.bin' for Fam10h, rebooted and nothing changed
36 here as far as microcode patches is concerned. I am not using savedconfig on
37 this PC, so all amd-ucode binaries are available to be loaded from the
38 filesystem.
39
40
41 > Previous generation CPU updates will be builtin, even if you try to
42 > exclude them.
43
44 Fine, so following the wiki page and ONLY adding the microcode specific to the
45 CPU family should still work.
46
47 > Corbin
48
49 Thanks Corbin, I wonder if despite articles about microcode patch releases to
50 deal with spectre and what not, there are just no patches made available for
51 my aging AMD CPUs.
52 --
53 Regards,
54
55 Mick

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