Change in coreboot[master]: HiFive-Unleashed: add support clint

[Xiang Wang (Code Review)]

Xiang Wang has uploaded this change for review. ( https://review.coreboot.org/28355

Change subject: HiFive-Unleashed: add support clint
......................................................................

HiFive-Unleashed: add support clint

Change-Id: Ibc3a8644dcb83d5697d9d6e551c7682377285116
Signed-off-by: Xiang Wang 
---
A src/soc/sifive/fu540/clint.c
A src/soc/sifive/fu540/include/soc/clint.h
2 files changed, 60 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/55/28355/1

diff --git a/src/soc/sifive/fu540/clint.c b/src/soc/sifive/fu540/clint.c
new file mode 100644
index 0000000..463c22b
--- /dev/null
+++ b/src/soc/sifive/fu540/clint.c
@@ -0,0 +1,32 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2018 HardenedLinux
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that 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.
+ */
+
+#include <mcall.h>
+#include <arch/io.h>
+#include <soc/clint.h>
+
+void mtime_init(void)
+{
+	long hart_id = read_csr(mhartid);
+	HLS()->time = (uint64_t *)0x20bff8;
+	HLS()->timecmp = (uint64_t *)(0x204000 + 8 * hart_id);
+}
+
+void set_msip(int hartid, int val)
+{
+	long hart_id = read_csr(mhartid);
+	write32((void *)(0x200000 + 4 * hart_id), !!val);
+}
+
diff --git a/src/soc/sifive/fu540/include/soc/clint.h b/src/soc/sifive/fu540/include/soc/clint.h
new file mode 100644
index 0000000..f120514
--- /dev/null
+++ b/src/soc/sifive/fu540/include/soc/clint.h
@@ -0,0 +1,28 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2018 HardenedLinux
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that 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.
+ */
+
+#ifndef __SOC_SIFIVE_HIFIVE_U_CLOCK_H__
+#define __SOC_SIFIVE_HIFIVE_U_CLOCK_H__
+
+/* This function is used to initialize the hart-local storage field
+ * associated with mtime */
+void mtime_init(void);
+
+/* This function is used to operate msip. Used to send interrupt
+ * signals between with cores. */
+void set_msip(int hartid, int val);
+
+#endif
+