morello: add shutdown/reboot communication with PCC

On Morello SoC platform, SCP has to communicate with PCC over shared memory interface for system shutdown and reboot. This patch adds support for the same. Signed-off-by: Chandni Cherukuri <chandni.cherukuri@arm.com> Signed-off-by: Anurag Koul <anurag.koul@arm.com> Change-Id: I46ad477552f40c530605ea99fe4d30472ecb28d4
ARM-software · Dec 9, 2021 · 806214b · 806214b
1 parent 291a906
commit 806214b
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diff --git a/product/morello/module/morello_system/CMakeLists.txt b/product/morello/module/morello_system/CMakeLists.txt
@@ -6,6 +6,10 @@
 #
 add_library(${SCP_MODULE_TARGET} SCP_MODULE)
 
+if(SCP_ENABLE_PLAT_FVP)
+target_compile_definitions(${SCP_MODULE_TARGET}  PUBLIC -DPLAT_FVP=1)
+endif()
+
 target_include_directories(${SCP_MODULE_TARGET}
                            PUBLIC "${CMAKE_CURRENT_SOURCE_DIR}/include")
 
@@ -22,3 +26,7 @@ target_link_libraries(
             module-scmi
             module-system-power
             module-dmc-bing)
+
+if(NOT SCP_ENABLE_PLAT_FVP)
+target_link_libraries(${SCP_MODULE_TARGET} PRIVATE module-morello-scp2pcc)
+endif()
diff --git a/product/morello/module/morello_system/src/mod_morello_system.c b/product/morello/module/morello_system/src/mod_morello_system.c
@@ -21,6 +21,9 @@
 
 #include <mod_clock.h>
 #include <mod_dmc_bing.h>
+#if !defined(PLAT_FVP)
+#    include <mod_morello_scp2pcc.h>
+#endif
 #include <mod_morello_system.h>
 #include <mod_power_domain.h>
 #include <mod_ppu_v1.h>
@@ -115,6 +118,11 @@ struct morello_system_ctx {
 
     /* Pointer to SDS */
     const struct mod_sds_api *sds_api;
+
+#if !defined(PLAT_FVP)
+    /* Pointer to SCP to PCC communication API */
+    const struct mod_morello_scp2pcc_api *scp2pcc_api;
+#endif
 };
 
 struct morello_system_isr {
@@ -177,6 +185,33 @@ static struct morello_system_isr isrs[] = {
 
 static int morello_system_shutdown(enum mod_pd_system_shutdown system_shutdown)
 {
+#if !defined(PLAT_FVP)
+    int status;
+    switch (system_shutdown) {
+    case MOD_PD_SYSTEM_SHUTDOWN:
+        FWK_LOG_INFO("[MORELLO SYSTEM] Request PCC for system shutdown");
+        status = morello_system_ctx.scp2pcc_api->send(
+            NULL, 0, SCP2PCC_TYPE_SHUTDOWN);
+        break;
+
+    case MOD_PD_SYSTEM_COLD_RESET:
+        FWK_LOG_INFO("[MORELLO SYSTEM] Request PCC for system reboot");
+        status =
+            morello_system_ctx.scp2pcc_api->send(NULL, 0, SCP2PCC_TYPE_REBOOT);
+        break;
+
+    default:
+        FWK_LOG_INFO("[MORELLO SYSTEM] Unknown shutdown command!");
+        status = FWK_E_PARAM;
+        break;
+    }
+
+    if (status != FWK_SUCCESS) {
+        FWK_LOG_ERR("[MORELLO SYSTEM] Shutdown/Reboot request to PCC failed");
+        return status;
+    }
+#endif
+
     NVIC_SystemReset();
     return FWK_E_DEVICE;
 }
@@ -424,6 +459,16 @@ static int morello_system_bind(fwk_id_t id, unsigned int round)
     if (status != FWK_SUCCESS)
         return status;
 
+#if !defined(PLAT_FVP)
+    status = fwk_module_bind(
+        FWK_ID_MODULE(FWK_MODULE_IDX_MORELLO_SCP2PCC),
+        FWK_ID_API(FWK_MODULE_IDX_MORELLO_SCP2PCC, 0),
+        &morello_system_ctx.scp2pcc_api);
+    if (status != FWK_SUCCESS) {
+        return status;
+    }
+#endif
+
     return fwk_module_bind(
         fwk_module_id_sds,
         FWK_ID_API(FWK_MODULE_IDX_SDS, 0),