diff options
Diffstat (limited to 'src/mainboard/google/brya/variants')
| -rw-r--r-- | src/mainboard/google/brya/variants/crota/variant.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/mainboard/google/brya/variants/crota/variant.c b/src/mainboard/google/brya/variants/crota/variant.c index e8c62ebdc2..cb4935b1df 100644 --- a/src/mainboard/google/brya/variants/crota/variant.c +++ b/src/mainboard/google/brya/variants/crota/variant.c @@ -4,12 +4,23 @@ #include <chip.h> #include <fw_config.h> #include <baseboard/variants.h> +#include <acpi/acpi.h> +#include <acpi/acpigen.h> +#include <drivers/vpd/vpd.h> +#include <stdio.h> const char *get_wifi_sar_cbfs_filename(void) { return "wifi_sar_0.hex"; } +static const char *get_dock_mac_from_vpd(char *buf, int size) +{ + /* Support MAC address pass-through */ + /* Read value of 'dock_mac' from RO VPD */ + return vpd_gets("dock_mac", buf, size, VPD_RO); +} + void variant_update_soc_chip_config(struct soc_intel_alderlake_config *config) { if (fw_config_probe(FW_CONFIG(DB_LTE, LTE_USB))) { @@ -26,3 +37,49 @@ void variant_update_soc_chip_config(struct soc_intel_alderlake_config *config) config->ext_fivr_settings.vnn_sx_voltage_mv = 1250; } } + +void variant_fill_ssdt(const struct device *unused) +{ + /* Write MAC address to SSDT for Linux kernel r8152 driver */ + /* enable pass-through support */ + /* and read ACPI object name: "\_SB.AMAC" */ + + /* ASL code like this */ + // Scope (\_SB) + // { + // Method (AMAC, 0, Serialized) + // { + // Return (ToBuffer (STRING)) + // } + // } + + char buf[32], acpi_buf[32]; + if (get_dock_mac_from_vpd(buf, sizeof(buf)) != NULL) { + printk(BIOS_INFO, "RO_VPD, dock_mac=%s\n", buf); + + /* remove ':' from mac address string */ + size_t len = strlen(buf); + int i, j; + for (i = 0; i < len; i++) { + if (buf[i] == ':') { + for (j = i; j < len; j++) + buf[j] = buf[j+1]; + len--; + i--; + } + } + buf[len] = '\0'; + + /* Format expected by the Linux kernel r8152 driver */ + /* "_AUXMAC_#XXXXXXXXXXXX#" */ + int acpi_buf_len = snprintf(acpi_buf, sizeof(acpi_buf), "_AUXMAC_#%s#", buf); + + acpigen_write_scope("\\_SB"); + acpigen_write_method_serialized("AMAC", 0); + + acpigen_write_return_byte_buffer((uint8_t *)acpi_buf, acpi_buf_len); + + acpigen_write_method_end(); + acpigen_write_scope_end(); + } +} |