diff options
| -rw-r--r-- | src/soc/intel/elkhartlake/include/soc/tsn_gbe.h | 9 | ||||
| -rw-r--r-- | src/soc/intel/elkhartlake/tsn_gbe.c | 32 |
2 files changed, 41 insertions, 0 deletions
diff --git a/src/soc/intel/elkhartlake/include/soc/tsn_gbe.h b/src/soc/intel/elkhartlake/include/soc/tsn_gbe.h index d006ef252b..e9f6c8d1fe 100644 --- a/src/soc/intel/elkhartlake/include/soc/tsn_gbe.h +++ b/src/soc/intel/elkhartlake/include/soc/tsn_gbe.h @@ -3,4 +3,13 @@ #ifndef _SOC_ELKHARTLAKE_TSN_GBE_H_ #define _SOC_ELKHARTLAKE_TSN_GBE_H_ +#define MAC_ADDR_LEN 6 + +#define TSN_MAC_ADD0_HIGH 0x300 /* MAC Address0 High register */ +#define TSN_MAC_ADD0_LOW 0x304 /* MAC Address0 Low register */ + +/* We need one function we can call to get a MAC address to use. */ +/* This function can be coded somewhere else but must exist. */ +enum cb_err mainboard_get_mac_address(struct device *dev, uint8_t mac[MAC_ADDR_LEN]); + #endif /* _SOC_ELKHARTLAKE_TSN_GBE_H_ */ diff --git a/src/soc/intel/elkhartlake/tsn_gbe.c b/src/soc/intel/elkhartlake/tsn_gbe.c index c96e88b972..4a340b2f6d 100644 --- a/src/soc/intel/elkhartlake/tsn_gbe.c +++ b/src/soc/intel/elkhartlake/tsn_gbe.c @@ -5,10 +5,42 @@ #include <device/pci_ids.h> #include <soc/tsn_gbe.h> +static void program_mac_address(struct device *dev, void *base) +{ + enum cb_err status; + uint8_t mac[MAC_ADDR_LEN]; + + /* Check first whether there is a valid MAC address available */ + status = mainboard_get_mac_address(dev, mac); + if (status != CB_SUCCESS) { + printk(BIOS_INFO, "TSN GbE: No valid MAC address found\n"); + return; + } + + printk(BIOS_DEBUG, "TSN GbE: Programming MAC Address...\n"); + + /* Write the upper 16 bits of the first 6-byte MAC address */ + clrsetbits32((void *)(base + TSN_MAC_ADD0_HIGH), 0xffff, ((mac[5] << 8) | mac[4])); + /* Write the lower 32 bits of the first 6-byte MAC address */ + clrsetbits32((void *)(base + TSN_MAC_ADD0_LOW), 0xffffffff, + (mac[3] << 24) | (mac[2] << 16) | (mac[1] << 8) | mac[0]); +} + +static void gbe_tsn_init(struct device *dev) +{ + /* Get the base address of the I/O registers in memory space */ + struct resource *gbe_tsn_res = find_resource(dev, PCI_BASE_ADDRESS_0); + uintptr_t io_mem_base = gbe_tsn_res->base; + + /* Program MAC address */ + program_mac_address(dev, (void *)io_mem_base); +} + static struct device_operations gbe_tsn_ops = { .read_resources = pci_dev_read_resources, .set_resources = pci_dev_set_resources, .enable_resources = pci_dev_enable_resources, + .init = gbe_tsn_init, }; static const unsigned short gbe_tsn_device_ids[] = { 0x4b32, 0x4ba0, 0x4bb0, 0 }; |