1 /**
2  * Copyright (C) 2020 IBM Corporation
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *     http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 #include "cfam_access.hpp"
17 #include "p10_cfam.hpp"
18 #include "registration.hpp"
19 #include "targeting.hpp"
20 
21 namespace openpower
22 {
23 namespace p10
24 {
25 
26 using namespace openpower::cfam::access;
27 using namespace openpower::cfam::p10;
28 using namespace openpower::targeting;
29 
30 /**
31  * Sets the mux on the P10 to the FSI SPI masters rather than the PIB SPI
32  * masters. This should only be executed before the host is powering on since
33  * the host will set the mux to the PIB SPI masters.
34  */
35 void setSPIMux()
36 {
37     Targeting targets;
38 
39     for (const auto& t : targets)
40     {
41         writeRegWithMask(t, P10_ROOT_CTRL8, 0xF0000000, 0xF0000000);
42     }
43 }
44 
45 REGISTER_PROCEDURE("setSPIMux", setSPIMux)
46 
47 } // namespace p10
48 } // namespace openpower
49