Hi,
Sorry for the delay.> CPU ID 0x80000001: fc0
So your CPU is revision "DH" which is pre "F".
> But I have also seen that CONFIG_K8_REV_F_SUPPORT is not set in .config
nope this is for some other CPUs.
If you look to coreboot/src/cpu/amd/model_fxx/powernow_acpi.c, your CPU 0xfc0
has an entry there.
You need to check pstates_algorithm() function. It may not be executed at all,
or there is something wrong with that. Make sure that you look to the later one,
there is #ifdef in this file! The first one is for CONFIG_K8_REV_F_SUPPORT.
This functionality is called from amd_generate_powernow()
which goes from via/k8t890/traf_ctrl.c
I suspect that this old VIA chipset has no PCI device for this thus the
.acpi_fill_ssdt_generator = southbridge_acpi_fill_ssdt_generator
Is never called. I did not do the support for the K8T800 chipset so I don't
know. Maybe you can provide lspci -xxx -n from linux to see what kind of PCI
devices you have. Perhaps then the callback can be added elsewhere to the PCI
device you have such as northbridge_driver_t800_old.
You can try attached patch, maybe it will move you further. I remember it was
real pain to get the cool-n-quiet working, there was a lot of southbridge tweaks
necessary (and undocumented bits!). Just give it a try. In worst case you will
see some messages in dmesg about Targ stuck bits...
Thanks
Rudolf
diff --git a/src/southbridge/via/k8t890/host.c b/src/southbridge/via/k8t890/host.c
index 2155594..2dd2896 100644
--- a/src/southbridge/via/k8t890/host.c
+++ b/src/southbridge/via/k8t890/host.c
@@ -82,12 +82,26 @@ static void host_init(struct device *dev)
}
+
+#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES)
+
+static void southbridge_acpi_fill_ssdt_generator(device_t dev) {
+
+ amd_generate_powernow(0, 0, 0);
+ acpigen_write_mainboard_resources("\\_SB.PCI0.MBRS", "_CRS");
+}
+#endif
+
static const struct device_operations host_ops_old = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.enable = host_old_enable,
.init = host_old_init,
+#if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES)
+ .write_acpi_tables = acpi_write_hpet,
+ .acpi_fill_ssdt_generator = southbridge_acpi_fill_ssdt_generator,
+#endif
.ops_pci = 0,
};
--
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