Hi Anatolij,
-----Original Message----- From: Anatolij Gustschin [mailto:agust@denx.de] Sent: 2018年10月18日 20:28 To: u-boot@lists.denx.de; Peng Fan peng.fan@nxp.com; sbabic@denx.de Subject: [PATCH v6 20/34] imx8: cpu: add function for reading FEC MAC from fuse
FEC driver requires imx_get_mac_from_fuse(). Add it in preparation for ENETx support.
Signed-off-by: Anatolij Gustschin agust@denx.de Cc: Stefano Babic sbabic@denx.de
arch/arm/mach-imx/imx8/cpu.c | 38 ++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+)
diff --git a/arch/arm/mach-imx/imx8/cpu.c b/arch/arm/mach-imx/imx8/cpu.c index d80b4b175d..da34a94a23 100644 --- a/arch/arm/mach-imx/imx8/cpu.c +++ b/arch/arm/mach-imx/imx8/cpu.c @@ -543,3 +543,41 @@ u64 get_page_table_size(void) return size; } #endif
+#define FUSE_MAC0_WORD0 708 +#define FUSE_MAC0_WORD1 709 +#define FUSE_MAC1_WORD0 710 +#define FUSE_MAC1_WORD1 711
+void imx_get_mac_from_fuse(int dev_id, unsigned char *mac) {
- u32 word[2], val[2] = {};
- int i, ret;
- if (dev_id == 0) {
word[0] = FUSE_MAC0_WORD0;word[1] = FUSE_MAC0_WORD1;- } else {
word[0] = FUSE_MAC1_WORD0;word[1] = FUSE_MAC1_WORD1;- }
- for (i = 0; i < 2; i++) {
ret = sc_misc_otp_fuse_read(-1, word[i], &val[i]);if (ret < 0)goto err;- }
- mac[0] = val[0];
- mac[1] = val[0] >> 8;
- mac[2] = val[0] >> 16;
- mac[3] = val[0] >> 24;
- mac[4] = val[1];
- mac[5] = val[1] >> 8;
- debug("%s: MAC%d: %02x.%02x.%02x.%02x.%02x.%02x\n",
__func__, dev_id, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);- return;
+err:
- printf("%s: fuse %d, err: %d\n", __func__, word[i], ret); }
Reviewed-by: Peng Fan peng.fan@nxp.com
Thanks, Peng.
-- 2.17.1