Check whether the ethernet interface is enabled at all before reading MAC EEPROM. As a cost saving measure, it can happen that the MAC EEPROM is not populated on SoMs which do not use ethernet.

Signed-off-by: Marek Vasut marex@denx.de --- Cc: "NXP i.MX U-Boot Team" uboot-imx@nxp.com Cc: Andreas Geisreiter ageisreiter@dh-electronics.de Cc: Christoph Niedermaier cniedermaier@dh-electronics.com Cc: Fabio Estevam festevam@gmail.com Cc: Patrice Chotard patrice.chotard@foss.st.com Cc: Patrick Delaunay patrick.delaunay@foss.st.com Cc: Stefano Babic sbabic@denx.de Cc: u-boot@dh-electronics.com Cc: u-boot@lists.denx.de Cc: uboot-stm32@st-md-mailman.stormreply.com --- NOTE: It is probably best if this goes in via either imx or stm32 tree, I can break the patch up, but that would introduce dependency between two PRs in different trees. Let me know what you prefer. --- board/dhelectronics/common/dh_common.c | 16 ++++++++++++++++ board/dhelectronics/common/dh_common.h | 8 ++++++++ board/dhelectronics/dh_imx6/dh_imx6.c | 3 +++ .../dhelectronics/dh_imx8mp/imx8mp_dhcom_pdk2.c | 6 ++++++ board/dhelectronics/dh_stm32mp1/board.c | 6 ++++++ 5 files changed, 39 insertions(+)

diff --git a/board/dhelectronics/common/dh_common.c b/board/dhelectronics/common/dh_common.c index 67e3d59b1f3..34094a020b0 100644 --- a/board/dhelectronics/common/dh_common.c +++ b/board/dhelectronics/common/dh_common.c @@ -18,6 +18,19 @@ bool dh_mac_is_in_env(const char *env) return eth_env_get_enetaddr(env, enetaddr); }

+int dh_get_mac_is_enabled(const char *alias) +{ + ofnode node = ofnode_path(alias); + + if (!ofnode_valid(node)) + return -EINVAL; + + if (!ofnode_is_enabled(node)) + return -ENODEV; + + return 0; +} + int dh_get_mac_from_eeprom(unsigned char *enetaddr, const char *alias) { struct udevice *dev; @@ -57,6 +70,9 @@ __weak int dh_setup_mac_address(void) if (dh_mac_is_in_env("ethaddr")) return 0;

+ if (dh_get_mac_is_enabled("ethernet0")) + return 0; + if (!dh_get_mac_from_eeprom(enetaddr, "eeprom0")) return eth_env_set_enetaddr("ethaddr", enetaddr);

diff --git a/board/dhelectronics/common/dh_common.h b/board/dhelectronics/common/dh_common.h index 2b24637d96d..a2de5b1553e 100644 --- a/board/dhelectronics/common/dh_common.h +++ b/board/dhelectronics/common/dh_common.h @@ -11,6 +11,14 @@ */ bool dh_mac_is_in_env(const char *env);

+/* + * dh_get_mac_is_enabled - Test if ethernet MAC is enabled in DT + * + * @alias: alias for ethernet MAC device tree node + * Return: 0 if OK, other value on error + */ +int dh_get_mac_is_enabled(const char *alias); + /* * dh_get_mac_from_eeprom - Get MAC address from eeprom and write it to enetaddr * diff --git a/board/dhelectronics/dh_imx6/dh_imx6.c b/board/dhelectronics/dh_imx6/dh_imx6.c index 07fc9b1fe6d..0676587c38a 100644 --- a/board/dhelectronics/dh_imx6/dh_imx6.c +++ b/board/dhelectronics/dh_imx6/dh_imx6.c @@ -92,6 +92,9 @@ int dh_setup_mac_address(void) if (dh_mac_is_in_env("ethaddr")) return 0;

+ if (dh_get_mac_is_enabled("ethernet0")) + return 0; + if (!dh_imx_get_mac_from_fuse(enetaddr)) goto out;

diff --git a/board/dhelectronics/dh_imx8mp/imx8mp_dhcom_pdk2.c b/board/dhelectronics/dh_imx8mp/imx8mp_dhcom_pdk2.c index 5f12d787d38..ff2c0e87215 100644 --- a/board/dhelectronics/dh_imx8mp/imx8mp_dhcom_pdk2.c +++ b/board/dhelectronics/dh_imx8mp/imx8mp_dhcom_pdk2.c @@ -47,6 +47,9 @@ static int dh_imx8_setup_ethaddr(void) if (dh_mac_is_in_env("ethaddr")) return 0;

+ if (dh_get_mac_is_enabled("ethernet0")) + return 0; + if (!dh_imx_get_mac_from_fuse(enetaddr)) goto out;

@@ -66,6 +69,9 @@ static int dh_imx8_setup_eth1addr(void) if (dh_mac_is_in_env("eth1addr")) return 0;

+ if (dh_get_mac_is_enabled("ethernet1")) + return 0; + if (!dh_imx_get_mac_from_fuse(enetaddr)) goto increment_out;

diff --git a/board/dhelectronics/dh_stm32mp1/board.c b/board/dhelectronics/dh_stm32mp1/board.c index 88eb7d1b8d4..b3309c9d330 100644 --- a/board/dhelectronics/dh_stm32mp1/board.c +++ b/board/dhelectronics/dh_stm32mp1/board.c @@ -129,6 +129,9 @@ static int dh_stm32_setup_ethaddr(void) if (dh_mac_is_in_env("ethaddr")) return 0;

+ if (dh_get_mac_is_enabled("ethernet0")) + return 0; + if (!dh_get_mac_from_eeprom(enetaddr, "eeprom0")) return eth_env_set_enetaddr("ethaddr", enetaddr);

@@ -142,6 +145,9 @@ static int dh_stm32_setup_eth1addr(void) if (dh_mac_is_in_env("eth1addr")) return 0;

+ if (dh_get_mac_is_enabled("ethernet1")) + return 0; + if (dh_stm32_mac_is_in_ks8851()) return 0;