1 files changed, 67 insertions, 0 deletions
diff --git a/lib/utils/ipi/fdt_ipi_mswi.c b/lib/utils/ipi/fdt_ipi_mswi.c
new file mode 100644
index 0000000..f119f9c
--- /dev/null
+++ b/lib/utils/ipi/fdt_ipi_mswi.c
@@ -0,0 +1,67 @@
+/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2021 Western Digital Corporation or its affiliates.
+ *
+ * Authors:
+ *   Anup Patel <anup.patel@wdc.com>
+ */
+
+#include <sbi/sbi_error.h>
+#include <sbi_utils/fdt/fdt_helper.h>
+#include <sbi_utils/ipi/fdt_ipi.h>
+#include <sbi_utils/ipi/aclint_mswi.h>
+
+#define MSWI_MAX_NR			16
+
+static unsigned long mswi_count = 0;
+static struct aclint_mswi_data mswi[MSWI_MAX_NR];
+
+static int ipi_mswi_cold_init(void *fdt, int nodeoff,
+			      const struct fdt_match *match)
+{
+	int rc;
+	unsigned long offset;
+	struct aclint_mswi_data *ms;
+
+	if (MSWI_MAX_NR <= mswi_count)
+		return SBI_ENOSPC;
+	ms = &mswi[mswi_count];
+
+	rc = fdt_parse_aclint_node(fdt, nodeoff, false, &ms->addr, &ms->size,
+				   &ms->first_hartid, &ms->hart_count);
+	if (rc)
+		return rc;
+
+	if (match->data) {
+		/* Adjust MSWI address and size for CLINT device */
+		offset = *((unsigned long *)match->data);
+		ms->addr += offset;
+		if ((ms->size - offset) < ACLINT_MSWI_SIZE)
+			return SBI_EINVAL;
+		ms->size = ACLINT_MSWI_SIZE;
+	}
+
+	rc = aclint_mswi_cold_init(ms);
+	if (rc)
+		return rc;
+
+	mswi_count++;
+	return 0;
+}
+
+static unsigned long clint_offset = CLINT_MSWI_OFFSET;
+
+static const struct fdt_match ipi_mswi_match[] = {
+	{ .compatible = "riscv,clint0", .data = &clint_offset },
+	{ .compatible = "sifive,clint0", .data = &clint_offset },
+	{ .compatible = "riscv,aclint-mswi" },
+	{ },
+};
+
+struct fdt_ipi fdt_ipi_mswi = {
+	.match_table = ipi_mswi_match,
+	.cold_init = ipi_mswi_cold_init,
+	.warm_init = aclint_mswi_warm_init,
+	.exit = NULL,
+};