On 14. Oct 2020, at 21:10, Clay Daniels <clay.daniels.jr@gmail.com> wrote:

I think this patch may fix the same problem on my MSI X570 motherboard. I need some help in applying the patch. Although I installed Ubuntu when I got involved with Flashrom, etc., I am going to revert to trusty FreeBSD which has a user "port" to install flashrom, not as a binary large object (BLOB) but simply navigating to the port directory and doing "make install && make clean". Sometimes I see patches in the ports directory, but there is none in the current flashrom directory (yet). So I think I need to create a diff file from the text below named "patch-sb600spi.c", place it in the main /usr/ports/sysutils/flashrom directory, use "make makepatch", then "make install". I can use "make clean" afterwards if I like. Does this procedure sound like I'm on the right path? Any & all help appreciated

Clay

On Mon, Oct 12, 2020 at 1:26 AM Rene Rebe <rene@exactcode.com> wrote:

Added AMD Ryzen 3950x X570 and AMD Ryzen 4000 Mobile PCI revisions
to AMD FP4 / AM4 sb600spi.c.

Trying to use flashrom to downgrade my Asus WS X570 ACE bios to a
previous, more stable and performant version I just got this output:

flashrom -p internal
flashrom v1.2 on Linux 5.8.13-dist (x86_64)
flashrom is free software, get the source code at https://flashrom.org

Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
Found chipset "AMD FP4".
Enabling flash write... FCH device found but SMBus revision 0x61 does not match known values.

So I patched mine and a friends MSI Modern 14 Ryzen 4700 laptop
revisions in and we could both read the BIOS and I also tested
flashing the Asus WS X570 ACE succesfully.

Signed-of-by: René Rebe <rene@exactcode.de>

diff --git a/sb600spi.c b/sb600spi.c
index 5892d57..8a3c87d 100644
--- a/sb600spi.c
+++ b/sb600spi.c
@@ -143,7 +143,7 @@ static int determine_generation(struct pci_dev *dev)
                if (rev == 0x4a) {
                        amd_gen = CHIPSET_YANGTZE;
                        msg_pdbg("Yangtze detected.\n");
-               } else if (rev == 0x4b) {
+               } else if (rev == 0x4b || rev == 0x51 || rev == 0x61) {
                        amd_gen = CHIPSET_PROMONTORY;
                        msg_pdbg("Promontory detected.\n");
                } else {


--
  René Rebe, ExactCODE GmbH, Lietzenburger Str. 42, DE-10789 Berlin
  https://exactcode.com | https://t2sde.org | https://rene.rebe.de
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