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

source/bootloader/u-boot-2020.01/arch/arm/mach-rmobile/cpu_info-rcar.c

@@ -0,0 +1,46 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * arch/arm/cpu/armv7/rmobile/cpu_info-rcar.c
+ *
+ * Copyright (C) 2013,2014 Renesas Electronics Corporation
+ */
+#include <common.h>
+#include <asm/io.h>
+
+#define PRR_MASK		0x7fff
+#define R8A7796_REV_1_0		0x5200
+#define R8A7796_REV_1_1		0x5210
+
+static u32 rmobile_get_prr(void)
+{
+#ifdef CONFIG_RCAR_GEN3
+	return readl(0xFFF00044);
+#else
+	return readl(0xFF000044);
+#endif
+}
+
+u32 rmobile_get_cpu_type(void)
+{
+	return (rmobile_get_prr() & 0x00007F00) >> 8;
+}
+
+u32 rmobile_get_cpu_rev_integer(void)
+{
+	const u32 prr = rmobile_get_prr();
+
+	if ((prr & PRR_MASK) == R8A7796_REV_1_1)
+		return 1;
+	else
+		return ((prr & 0x000000F0) >> 4) + 1;
+}
+
+u32 rmobile_get_cpu_rev_fraction(void)
+{
+	const u32 prr = rmobile_get_prr();
+
+	if ((prr & PRR_MASK) == R8A7796_REV_1_1)
+		return 1;
+	else
+		return prr & 0x0000000F;
+}