GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
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+/*
+ * Copyright 2021 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+#include <arch.h>
+#include <arch_helpers.h>
+#include <common/debug.h>
+#include <dcfg.h>
+#include <lib/mmio.h>
+#include <pmu.h>
+
+void enable_timer_base_to_cluster(uintptr_t nxp_pmu_addr)
+{
+	uint32_t *cltbenr = NULL;
+	uint32_t cltbenr_val = 0U;
+
+	cltbenr = (uint32_t *)(nxp_pmu_addr
+				+ CLUST_TIMER_BASE_ENBL_OFFSET);
+
+	cltbenr_val = mmio_read_32((uintptr_t)cltbenr);
+
+	cltbenr_val = cltbenr_val
+			| (1 << MPIDR_AFFLVL1_VAL(read_mpidr_el1()));
+
+	mmio_write_32((uintptr_t)cltbenr, cltbenr_val);
+
+	VERBOSE("Enable cluster time base\n");
+}
+
+/*
+ * Enable core timebase.  In certain Layerscape SoCs, the clock for each core's
+ * has an enable bit in the PMU Physical Core Time Base Enable
+ * Register (PCTBENR), which allows the watchdog to operate.
+ */
+
+void enable_core_tb(uintptr_t nxp_pmu_addr)
+{
+	uint32_t *pctbenr = (uint32_t *) (nxp_pmu_addr +
+					  CORE_TIMEBASE_ENBL_OFFSET);
+
+	mmio_write_32((uintptr_t)pctbenr, 0xff);
+}