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

source/bootloader/u-boot-2020.01/arch/arm/mach-imx/mac.c

@@ -0,0 +1,60 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2017 NXP
+ *
+ * Peng Fan <peng.fan@nxp.com>
+ */
+
+#include <common.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/io.h>
+#include <asm/arch/sys_proto.h>
+#include <errno.h>
+
+struct imx_mac_fuse {
+	u32 mac_addr0;
+	u32 rsvd0[3];
+	u32 mac_addr1;
+	u32 rsvd1[3];
+	u32 mac_addr2;
+	u32 rsvd2[7];
+};
+
+#define MAC_FUSE_MX6_OFFSET	0x620
+#define MAC_FUSE_MX7_OFFSET	0x640
+
+void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
+{
+	struct imx_mac_fuse *fuse;
+	u32 offset;
+	bool has_second_mac;
+
+	offset = is_mx6() ? MAC_FUSE_MX6_OFFSET : MAC_FUSE_MX7_OFFSET;
+	fuse = (struct imx_mac_fuse *)(ulong)(OCOTP_BASE_ADDR + offset);
+	has_second_mac = is_mx7() || is_mx6sx() || is_mx6ul() || is_mx6ull();
+
+	if (has_second_mac && dev_id == 1) {
+		u32 value = readl(&fuse->mac_addr2);
+
+		mac[0] = value >> 24;
+		mac[1] = value >> 16;
+		mac[2] = value >> 8;
+		mac[3] = value;
+
+		value = readl(&fuse->mac_addr1);
+		mac[4] = value >> 24;
+		mac[5] = value >> 16;
+
+	} else {
+		u32 value = readl(&fuse->mac_addr1);
+
+		mac[0] = value >> 8;
+		mac[1] = value;
+
+		value = readl(&fuse->mac_addr0);
+		mac[2] = value >> 24;
+		mac[3] = value >> 16;
+		mac[4] = value >> 8;
+		mac[5] = value;
+	}
+}