Import Mbed OS hard-float snapshot

targets/TARGET_Samsung/TARGET_SIDK_S1SBP6A/device/system_s1sbp6a.c

@@ -0,0 +1,76 @@
+/****************************************************************************
+ *
+ * Copyright 2020 Samsung Electronics All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
+ * either express or implied. See the License for the specific
+ * language governing permissions and limitations under the License.
+ *
+ ****************************************************************************/
+
+#include "cmsis.h"
+
+/*----------------------------------------------------------------------------
+  Define clocks
+ *----------------------------------------------------------------------------*/
+
+#define PERI_CLOCK    (4096000UL)
+/*----------------------------------------------------------------------------
+  System Core Clock Variable
+ *----------------------------------------------------------------------------*/
+uint32_t SystemCoreClock = HSOSC_CLK_FREQ ;//LSOSC_CLK_FREQ;  /* System Clock Frequency (Core Clock)*/
+uint32_t PeriPheralClock = PERI_CLOCK;
+
+/*----------------------------------------------------------------------------
+  Clock functions
+ *----------------------------------------------------------------------------*/
+static void peripheral_init(void)
+{
+    /*AFE Voltage Config */
+    putreg32(&BP_AFE_TOP->REF_CTRL, 0x7A68201F);
+    putreg32(&BP_AFE_TOP->AFE_CLK_CTRL, 0x0);
+}
+
+void SystemCoreClockUpdate(void)             /* Get Core Clock Frequency      */
+{
+    SystemCoreClock = bp6a_cmu_get_clock_freq(CMU_FCLK_AHBCLK);
+}
+
+static void pin_disable(void)
+{
+    int i;
+
+    for (i = 2; i < 14; i++) {
+        putreg32(&BP_SYSCON->IOCFG[i], 0);
+    }
+
+}
+
+void SystemInit(void)
+{
+    /* Set floating point coprosessor access mode. */
+#if (__FPU_USED == 1)
+    SCB->CPACR |= ((3UL << 10 * 2) | (3UL << 11 * 2));
+#endif
+
+#ifdef UNALIGNED_SUPPORT_DISABLE
+    SCB->CCR |= SCB_CCR_UNALIGN_TRP_Msk;
+#endif
+    /* USAGE/BUS/MEM FAULT ENABLE chenzhao */
+    SCB->SHCSR |= (1 << 18) | (1 << 17) | (1 << 16);
+    bp6a_pum_init();
+    bp6a_cmu_init(CMU_SRC_CLK_HSOSC, CMU_SRC_CLK_LSOSC);
+    bp6a_watchdog_enable(false);
+    SystemCoreClock = bp6a_cmu_get_clock_freq(CMU_FCLK_AHBCLK);
+    peripheral_init();
+    pin_disable();
+}