T6703: Adds option to configure AMD pstate driver

(cherry picked from commit 333672bee041f0f2b8e1b698a8eb2108694ad812)

1 files changed, 14 insertions, 0 deletions

diff --git a/src/conf_mode/system_option.py b/src/conf_mode/system_option.py
index 6aaf3d107..8a49458eb 100755
--- a/src/conf_mode/system_option.py
+++ b/src/conf_mode/system_option.py
@@ -19,11 +19,13 @@ import os
 from sys import exit
 from time import sleep
 
+
 from vyos.config import Config
 from vyos.configverify import verify_source_interface
 from vyos.configverify import verify_interface_exists
 from vyos.system import grub_util
 from vyos.template import render
+from vyos.utils.cpu import get_cpus
 from vyos.utils.dict import dict_search
 from vyos.utils.file import write_file
 from vyos.utils.kernel import check_kmod
@@ -94,6 +96,13 @@ def verify(options):
                 if not is_intf_addr_assigned(interface, address):
                     raise ConfigError(f'Address "{address}" not assigned on interface "{interface}"!')
 
+    if 'kernel' in options:
+        cpu_vendor = get_cpus()[0]['vendor_id']
+        if 'amd_pstate_driver' in options['kernel'] and cpu_vendor != 'AuthenticAMD':
+            raise ConfigError(
+                f'AMD pstate driver cannot be used with "{cpu_vendor}" CPU!'
+            )
+
     return None
 
 def generate(options):
@@ -107,6 +116,11 @@ def generate(options):
             cmdline_options.append('mitigations=off')
         if 'disable_power_saving' in options['kernel']:
             cmdline_options.append('intel_idle.max_cstate=0 processor.max_cstate=1')
+        if 'amd_pstate_driver' in options['kernel']:
+            mode = options['kernel']['amd_pstate_driver']
+            cmdline_options.append(
+                f'initcall_blacklist=acpi_cpufreq_init amd_pstate={mode}'
+            )
     grub_util.update_kernel_cmdline_options(' '.join(cmdline_options))
 
     return None