mac.c
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// 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() || is_imx8mp();
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;
}
}