From 351fad05e075c388dece4cd6dd8613494b870bad Mon Sep 17 00:00:00 2001 From: Brian Scott Date: Mon, 11 May 2026 13:54:04 -0300 Subject: [PATCH] if_eqos_starfive: Read MAC address from device tree u-boot/opensbi determines the ethernet MAC address from ROM and passes it to the OS in the device tree. This change sets the correct MAC address from this source. This prevents the eqos class driver from generating random MAC addresses at each boot. Tested on Starfive VisionFive 2, riscv64 SBC. Reviewed by: mhorne MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D56782 --- sys/dev/eqos/if_eqos_starfive.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/sys/dev/eqos/if_eqos_starfive.c b/sys/dev/eqos/if_eqos_starfive.c index 62f8b3f3898..f81118fd309 100644 --- a/sys/dev/eqos/if_eqos_starfive.c +++ b/sys/dev/eqos/if_eqos_starfive.c @@ -17,6 +17,7 @@ #include #include +#include #include #include #include @@ -40,6 +41,7 @@ #define JH7110_CSR_FREQ 198000000 #define WR4(sc, o, v) bus_write_4(sc->base.res[EQOS_RES_MEM], (o), (v)) +#define RD4(sc, o) bus_read_4(sc->base.res[EQOS_RES_MEM], (o)) static const struct ofw_compat_data compat_data[] = { {"starfive,jh7110-dwmac", 1}, @@ -131,6 +133,8 @@ if_eqos_starfive_init(device_t dev) struct if_eqos_starfive_softc *sc = device_get_softc(dev); hwreset_t rst_ahb, rst_stmmaceth; phandle_t node; + uint8_t eaddr[ETHER_ADDR_LEN]; + uint32_t maclo, machi; node = ofw_bus_get_node(dev); @@ -186,6 +190,14 @@ if_eqos_starfive_init(device_t dev) return (ENXIO); } + if (OF_getprop(node, "local-mac-address", eaddr, sizeof(eaddr)) == + sizeof(eaddr)) { + machi = eaddr[5] | (eaddr[4] << 8); + WR4(sc, GMAC_MAC_ADDRESS0_HIGH, machi); + maclo = eaddr[3] | (eaddr[2] << 8) | (eaddr[1] << 16) | + (eaddr[0] << 24); + WR4(sc, GMAC_MAC_ADDRESS0_LOW, maclo); + } return (0); }