commit 0269eaf36dcb486b6ac92326fa59f61c267ce7f8
author Kumar Thangavel <thangavel.k@hcl.com> Wed Aug 11 15:45:18 2021 +0530
committer Kumar Thangavel <thangavel.k@hcl.com> Tue May 03 18:29:33 2022 +0530
tree 4da4aa19abe89d130c935d3a991cf67928cae270
parent 80be5d8335f31c12edae7edd2fc32a0583d765f9

Add multi-host postcode support

These changes add the multiple host postcode implementation.
In addition to the LPC snoop the postcode can be read via D-Bus
interface.The same is displayed in seven segment display thorough
GPIO lines.

The design can be refered at
   https://gerrit.openbmc-project.xyz/c/openbmc/docs/+/35065

Tested:

 Verified in Facebook Tiogapass & Yosemitev2 platforms.

1.The postcode displayed in the seven segment corresponding to the
  host position selected in the frontpanel of Facebook
  yosemitev2(4 host).

2.The postcode history is verified in the respective host directory
     "/var/lib/phosphor-post-code-manager/hostX(1,2,3,4)".

Signed-off-by: Kumar Thangavel <thangavel.k@hcl.com>
Change-Id: Id79ad00652bfedd319d3b8ccf1aafbdc60b33d86

lpcsnoop/snoop.hpp

diff --git a/lpcsnoop/snoop.hpp b/lpcsnoop/snoop.hpp
index 34d53b1..dab3334 100644
--- a/lpcsnoop/snoop.hpp
+++ b/lpcsnoop/snoop.hpp
@@ -5,9 +5,9 @@
 #include <xyz/openbmc_project/State/Boot/Raw/server.hpp>
 
 /* The LPC snoop on port 80h is mapped to this dbus path. */
-#define SNOOP_OBJECTPATH "/xyz/openbmc_project/state/boot/raw0"
+constexpr char snoopObject[] = "/xyz/openbmc_project/state/boot/raw0";
 /* The LPC snoop on port 80h is mapped to this dbus service. */
-#define SNOOP_BUSNAME "xyz.openbmc_project.State.Boot.Raw"
+constexpr char snoopDbus[] = "xyz.openbmc_project.State.Boot.Raw";
 
 template <typename... T>
 using ServerObject = typename sdbusplus::server::object::object<T...>;

lpcsnoop/snoop_listen.hpp

diff --git a/lpcsnoop/snoop_listen.hpp b/lpcsnoop/snoop_listen.hpp
index 174e664..876c119 100644
--- a/lpcsnoop/snoop_listen.hpp
+++ b/lpcsnoop/snoop_listen.hpp
@@ -30,7 +30,7 @@
     using namespace sdbusplus::bus::match::rules;
 
     return type::signal() + interface("org.freedesktop.DBus.Properties") +
-           member("PropertiesChanged") + path(SNOOP_OBJECTPATH);
+           member("PropertiesChanged") + path(snoopObject);
 }
 
 class SnoopListen
@@ -78,7 +78,7 @@
 
         m.read(messageBusName, messageData);
 
-        if (messageBusName == SNOOP_BUSNAME &&
+        if (messageBusName == snoopDbus &&
             messageData.find(propertyKey) != messageData.end())
         {
             handler(get<postcode_t>(messageData[propertyKey]));