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

source/bootloader/u-boot-2020.01/arch/arm/mach-uniphier/soc-info.c

@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2017 Socionext Inc.
+ *   Author: Masahiro Yamada <yamada.masahiro@socionext.com>
+ */
+
+#include <linux/io.h>
+#include <linux/types.h>
+
+#include "sg-regs.h"
+#include "soc-info.h"
+
+static unsigned int __uniphier_get_revision_field(unsigned int mask,
+						  unsigned int shift)
+{
+	u32 revision = readl(sg_base + SG_REVISION);
+
+	return (revision >> shift) & mask;
+}
+
+unsigned int uniphier_get_soc_id(void)
+{
+	return __uniphier_get_revision_field(0xff, 16);
+}
+
+unsigned int uniphier_get_soc_model(void)
+{
+	return __uniphier_get_revision_field(0x7, 8);
+}
+
+unsigned int uniphier_get_soc_revision(void)
+{
+	return __uniphier_get_revision_field(0x1f, 0);
+}