bpmpfw: cleanup makefile and split hpp/cpp

Source/hoc-clk/bpmpfw/source/freq.cpp

@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) Souldbminer, Lightos and Horizon OC Contributors
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "freq.hpp"
+
+namespace freq {
+
+    u64 MeasurePtoFreqHz(u32 srcId, u32 multiplier) {
+        constexpr u32 win = 16;
+        constexpr u32 osc = 32768;
+
+        const u32 val = (srcId << PtoSrcSelShift) | PtoDivSelDiv1 | PtoClkEnable | (win - 1);
+
+        MMIO32(CarBase + CarPtoClkCntCntl) = val;
+        (void)MMIO32(CarBase + CarPtoClkCntCntl);
+        usleep(2);
+
+        MMIO32(CarBase + CarPtoClkCntCntl) = val | PtoCntRst;
+        (void)MMIO32(CarBase + CarPtoClkCntCntl);
+        usleep(2);
+
+        MMIO32(CarBase + CarPtoClkCntCntl) = val;
+        (void)MMIO32(CarBase + CarPtoClkCntCntl);
+        usleep(2);
+
+        MMIO32(CarBase + CarPtoClkCntCntl) = val | PtoCntEn;
+        (void)MMIO32(CarBase + CarPtoClkCntCntl);
+        usleep((1000000u * win / osc) + 12 + 2); // 502us
+
+        while (MMIO32(CarBase + CarPtoClkCntStatus) & PtoClkCntBusy)
+            ;
+
+        const u32 cnt = MMIO32(CarBase + CarPtoClkCntStatus) & PtoClkCntMask;
+
+        MMIO32(CarBase + CarPtoClkCntCntl) = 0;
+        (void)MMIO32(CarBase + CarPtoClkCntCntl);
+        usleep(2);
+
+        return (static_cast<u64>(cnt) * multiplier * osc) / win;
+    }
+
+    void Update(HocClkBpmpSharedInfo &info) {
+        info.freqMem = static_cast<u32>(MeasurePtoFreqHz(ClkPtoEmc, 1) / 1000);
+        info.freqCpu = static_cast<u32>(MeasurePtoFreqHz(ClkPtoCclkGDiv2, 2) / 1000);
+    }
+
+} // namespace freq