diff --git a/lib/ras/host_utils.robot b/lib/ras/host_utils.robot
index 769e185..1d332ee 100644
--- a/lib/ras/host_utils.robot
+++ b/lib/ras/host_utils.robot
@@ -7,10 +7,11 @@
 *** Keywords ***
 
 Getscom Operations On OS
-    [Documentation]  Executes getscom command on OS
-    ...              with the given input command.
+    [Documentation]  Executes getscom command on OS with the given
+    ...              input command.
     [Arguments]      ${input_cmd}
-    #input_cmd       -l|--list-chips
+    # Description of arguments:
+    # input_cmd      -l|--list-chips
     #                -c|--chip <chip-id> <addr>
 
     ${output}  ${stderr}=  Execute Command  getscom ${input_cmd}
@@ -19,10 +20,11 @@
     [Return]  ${output}
 
 Gard Operations On OS
-    [Documentation]  Executes opal-gard command on OS
-    ...              with the given input command.
+    [Documentation]  Executes opal-gard command on OS with the given
+    ...              input command.
     [Arguments]      ${input_cmd}
-    #input_cmd       list/clear all/show <gard_record_id>
+    # Description of arguments:
+    # input_cmd      list/clear all/show <gard_record_id>
 
     ${output}  ${stderr}=  Execute Command  opal-gard ${input_cmd}
     ...        return_stderr=True
@@ -30,12 +32,30 @@
     [Return]  ${output}
 
 Putscom Through OS
-    [Documentation]  Executes putscom command on OS
-    ...              with the given input arguments.
-    [Arguments]  ${chip_id}  ${fru}  ${address}
-    #chip_id           processor ID
-    #fru               FRU value
-    #address           chip address
+    [Documentation]  Executes putscom command on OS with the given
+    ...              input arguments.
+    [Arguments]      ${chip_id}  ${fru}  ${address}
+    # Description of arguments:
+    # chip_id        processor ID (e.g 00000000).
+    # fru            FRU value (e.g. 2011400).
+    # address        chip address (e.g 4000000000000000).
 
     ${cmd}=  Catenate  putscom -c 0x${chip_id} 0x${fru} 0x${address}
     Start Command  ${cmd}
+
+Get Cores Values From OS
+    [Documentation]  Check if cores present on HOST OS & return core values.
+    ${cmd}=  Catenate  cat /sys/firmware/opal/msglog|grep -i chip|grep -i core
+    ${output}=  Execute Command  ${cmd}
+    Should Not Be Empty  ${output}
+    [Return]  ${output}
+
+Get ChipID From OS
+    [Documentation]  Get chip ID values based on the input.
+    [Arguments]      ${chip_type}
+    # Description of arguments:
+    # chip_type      The chip type (Processor/Centaur).
+
+    ${cmd}=  Catenate  -l | grep -i ${chip_type} | cut -c1-8
+    ${chip_id}=  Getscom Operations On OS  ${cmd}
+    [Return]  ${chip_id}
diff --git a/lib/utils.robot b/lib/utils.robot
index 6cfb9d5..09f98f7 100755
--- a/lib/utils.robot
+++ b/lib/utils.robot
@@ -708,7 +708,7 @@
 
 Get Auto Reboot
     [Documentation]  Returns auto reboot setting.
-    ${setting}=  Read Attribute  ${HOST_SETTING}  auto_reboot
+    ${setting}=  Read Attribute  ${HOST_SETTINGS}  auto_reboot
     [Return]  ${setting}
 
 
@@ -719,7 +719,7 @@
 
     ${valueDict}=  Set Variable  ${setting}
     ${data}=  Create Dictionary  data=${valueDict}
-    Write Attribute  ${HOST_SETTING}  auto_reboot  data=${data}
+    Write Attribute  ${HOST_SETTINGS}  auto_reboot  data=${data}
     ${current_setting}=  Get Auto Reboot
     Should Be Equal  ${current_setting}  ${setting}
 
@@ -754,6 +754,7 @@
     Should Be Empty  ${stderr}
     [Return]  ${stdout}
 
+
 Enable Core Dump On BMC
     [Documentation]  Enable core dump collection.
     Open Connection And Log In
@@ -810,7 +811,8 @@
     ...  Wait for OS  ${os_host}  ${os_username}  ${os_password}
 
     Open Connection  ${os_host}
-    Login  ${os_username}  ${os_password}
+    ${resp}=  Login  ${os_username}  ${os_password}
+    [Return]  ${resp}
 
 Configure Initial Settings
     [Documentation]  Restore old IP and route.
diff --git a/tests/test_ras.robot b/tests/test_ras.robot
new file mode 100644
index 0000000..e641517
--- /dev/null
+++ b/tests/test_ras.robot
@@ -0,0 +1,88 @@
+*** Settings ***
+Documentation       This suite tests checkstop operations through OS.
+Resource            ../lib/utils.robot
+Resource            ../lib/openbmc_ffdc.robot
+Resource            ../lib/ras/host_utils.robot
+Resource            ../lib/resource.txt
+Resource            ../lib/state_manager.robot
+Test Setup          RAS Test Setup
+Test Teardown       FFDC On Test Case Fail
+
+*** Variables ***
+${HOST_SETTINGS}    ${SETTINGS_URI}host0
+
+*** Test Cases ***
+
+Verify Channel Checkstop Through OS With Auto Reboot
+
+    [Documentation]  Verify Channel Checkstop (MBS FIR REG INT PROTOCOL ERROR)
+    ...              through OS With Auto Reboot settings enabled.
+    [Tags]           Verify_Channel_Checkstop_Through_OS_With_Auto_Reboot
+
+    Verify Checkstop Insertion With Auto Reboot
+    ...  Centaur  2011400  4000000000000000
+
+*** Keywords ***
+Inject Checkstop Through OS
+    [Documentation]  Inject checkstop on processor/centaur through OS.
+    ...              Test sequence:
+    ...              1. Boot To OS
+    ...              2. Clear any existing gard records
+    ...              3. Inject Checkstop on processor/centaur
+    [Arguments]      ${chip_type}  ${fru}  ${address}
+    # Description of arguments:
+    # chip_type      The chip type (Processor/Centaur).
+    # fru            FRU value (e.g. 2011400).
+    # address        chip address (e.g 4000000000000000).
+
+
+    Login To OS Host  ${OS_HOST}  ${OS_USERNAME}  ${OS_PASSWORD}
+    # Get core values are present through OS.
+    Get Cores Values From OS
+
+    Gard Operations On OS  clear all
+
+    # Fetch Processor/Centaur chip value based on the input chip_type.
+    ${output}=  Get ChipID From OS  ${chip_type}
+    ${chip_values}=  Split String  ${output}
+    ${chip_value}=  Get From List  ${chip_values}  0
+
+    Putscom Through OS  ${chip_value}  ${fru}  ${address}
+
+Verify And Clear Gard Records On OS
+    [Documentation]  Verify And Clear gard records on OS.
+
+    Login To OS Host  ${OS_HOST}  ${OS_USERNAME}  ${OS_PASSWORD}
+    ${output}=  Gard Operations On OS  list
+    Should Not Contain  ${output}  'No GARD entries to display'
+    Gard Operations On OS  clear all
+
+Verify Checkstop Insertion With Auto Reboot
+    [Documentation]  Inject and verify checkstop on processor/centaur through
+    ...              OS with auto reboot.
+    ...              Test sequence:
+    ...              1. Enable Auto Reboot Setting
+    ...              2. Inject Checkstop on processor/centaur
+    ...              3. Check If HOST rebooted and OS is up
+    ...              4. Verify & clear gard records
+    [Arguments]      ${chip_type}  ${fru}  ${address}
+    # Description of arguments:
+    # chip_type      The chip type (Processor/Centaur).
+    # fru            FRU value (e.g. 2011400).
+    # address        chip address (e.g 4000000000000000).
+
+    Set Auto Reboot  yes
+    Inject Checkstop Through OS  ${chip_type}  ${fru}  ${address}
+    Wait Until Keyword Succeeds  120 sec  20 sec  Is Host Rebooted
+    Wait for OS  ${OS_HOST}  ${OS_USERNAME}  ${OS_PASSWORD}
+    Verify And Clear Gard Records On OS
+
+RAS Test SetUp
+    [Documentation]  Validates input parameters.
+
+    Should Not Be Empty
+    ...   ${OS_HOST}  msg=You must provide DNS name/IP of the OS host.
+    Should Not Be Empty
+    ...   ${OS_USERNAME}  msg=You must provide OS host user name.
+    Should Not Be Empty
+    ...   ${OS_PASSWORD}  msg=You must provide OS host user password.