hocclk bpmp: communication

Source/hoc-clk/sysmodule/src/bpmp/bpmp.cpp

@@ -20,6 +20,7 @@
 #include <switch.h>
 
 #include "../board/board.hpp"
+#include "../file/config.hpp"
 #include "../file/file_utils.hpp"
 #include "../mapping/mem_map.hpp"
 #include "bpmp.hpp"
@@ -57,9 +58,12 @@ namespace bpmp {
 
         constexpr u64 FwIramPhysBase = 0x40004000;
         constexpr u32 FwStagingSize  = 0x8000;
+        constexpr u64 WorkRamPhysBase = FwIramPhysBase + FwStagingSize; // matches bpmpfw's WorkRamStart
 
         alignas(4096) u8 s_fwStageBuf[FwStagingSize];
 
+        HocClkBpmpSharedInfo s_sharedInfo = {};
+
         inline volatile u32 &Mmio(u64 base_va, u32 offset) {
             return *reinterpret_cast<volatile u32 *>(base_va + offset);
         }
@@ -213,4 +217,14 @@ namespace bpmp {
         s_pscPrepared = false;
     }
 
+    const HocClkBpmpSharedInfo *GetSharedInfo() {
+        if (!IsPatchedExosphere()) {
+            s_sharedInfo = {};
+            return &s_sharedInfo;
+        }
+
+        SmcCopyFromIram(&s_sharedInfo, WorkRamPhysBase, sizeof(s_sharedInfo));
+        return &s_sharedInfo;
+    }
+
 } // namespace bpmp

Source/hoc-clk/sysmodule/src/bpmp/bpmp.hpp

@@ -18,9 +18,13 @@
 #pragma once
 #include <switch.h>
 
+#include <hocclk/bpmp.h>
+
 namespace bpmp {
     Result StartBpmfwExecution();
 
     void StartSleepMonitorThread();
     void StopSleepMonitorThread();
+
+    const HocClkBpmpSharedInfo *GetSharedInfo();
 }

Source/hoc-clk/sysmodule/src/mgr/clock_manager.cpp

@@ -30,6 +30,7 @@
 #include <i2c.h>
 
 #include "../board/board.hpp"
+#include "../bpmp/bpmp.hpp"
 #include "../display/aula.hpp"
 #include "../display/display_refresh_rate.hpp"
 #include "../file/config.hpp"
@@ -626,6 +627,8 @@ namespace clockManager {
     bool RefreshContext() {
         bool hasChanged = false;
 
+        gContext.bpmpInfo = *bpmp::GetSharedInfo();
+
         std::uint32_t mode = 0;
         Result rc = apmExtGetCurrentPerformanceConfiguration(&mode);
         ASSERT_RESULT_OK(rc, "apmExtGetCurrentPerformanceConfiguration");