| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| |
| #include <assert.h> |
| #include <soc/ramstage.h> |
| #include <types.h> |
| |
| union eeprom_dimm_layout { |
| struct __packed { |
| char name[50]; |
| char manufacturer[50]; |
| uint8_t ranks; |
| uint8_t controller_id; |
| uint8_t data_width_bits; |
| uint8_t bus_width_bits; |
| uint32_t capacity_mib; |
| uint32_t max_tdp_milliwatts; |
| }; |
| uint8_t raw[0x80]; |
| }; |
| |
| _Static_assert(sizeof(union eeprom_dimm_layout) == 0x80, |
| "union eeprom_dimm_layout has invalid size!"); |
| |
| struct __packed eeprom_board_layout { |
| uint32_t signature; |
| union { |
| struct __packed { |
| char cpu_name[50]; |
| uint8_t cpu_count; |
| uint32_t cpu_max_non_turbo_frequency; |
| char pch_name[50]; |
| union eeprom_dimm_layout dimm[4]; |
| }; |
| uint8_t raw_layout[617]; |
| }; |
| }; |
| |
| _Static_assert(sizeof(struct eeprom_board_layout) == (617 + sizeof(uint32_t)), |
| "struct eeprom_board_layout has invalid size!"); |
| |
| struct __packed eeprom_reset_cause_regs { |
| uint32_t gblrst_cause0; |
| uint32_t gblrst_cause1; |
| uint32_t hpr_cause0; |
| }; |
| |
| struct __packed eeprom_board_settings { |
| uint32_t signature; |
| union { |
| struct __packed { |
| uint8_t secureboot; |
| uint8_t primary_video; |
| uint8_t deep_sx_enabled; |
| uint8_t wake_on_usb; |
| uint8_t usb_powered_in_s5; |
| uint8_t power_state_after_g3; |
| uint8_t blue_rear_vref; |
| uint8_t front_panel_audio; |
| uint8_t pxe_boot_capability; |
| uint8_t pink_rear_vref; |
| uint8_t vtx_disabled; |
| uint8_t boot_menu_disabled; |
| }; |
| uint8_t raw_settings[12]; |
| }; |
| }; |
| |
| _Static_assert(sizeof(struct eeprom_board_settings) == (12 + sizeof(uint32_t)), |
| "struct eeprom_board_settings has invalid size!"); |
| |
| struct __packed eeprom_bmc_settings { |
| uint8_t pcie_mux; |
| uint8_t hsi; |
| uint8_t efp3_displayport; |
| }; |
| |
| #define HERMES_SN_PN_LENGTH 32 |
| |
| /* The EEPROM on address 0x57 has the following vendor defined layout: */ |
| struct __packed eeprom_layout { |
| union { |
| uint8_t raw_fspm_upd[0x600]; |
| FSPM_UPD mupd; |
| }; |
| union { |
| uint8_t raw_fsps_upd[0xc00]; |
| FSPS_UPD supd; |
| }; |
| union { |
| uint8_t raw_board_layout[0x400]; |
| struct eeprom_board_layout board_layout; |
| }; |
| char system_serial_number[HERMES_SN_PN_LENGTH]; |
| char board_serial_number[HERMES_SN_PN_LENGTH]; |
| uint8_t boot_order[0x200]; |
| char board_part_number[HERMES_SN_PN_LENGTH]; |
| char product_part_number[HERMES_SN_PN_LENGTH]; |
| union { |
| struct eeprom_reset_cause_regs reset_cause_regs; |
| uint8_t raw_reset_cause_registers[0x80]; |
| }; |
| uint8_t unused[0x600]; |
| union { |
| uint8_t raw_board_settings[0xf8]; |
| struct eeprom_board_settings board_settings; |
| }; |
| union { |
| uint8_t raw_bmc_settings[0x8]; |
| struct eeprom_bmc_settings bmc_settings; |
| }; |
| }; |
| |
| _Static_assert(sizeof(FSPM_UPD) <= 0x600, "FSPM_UPD too big"); |
| _Static_assert(sizeof(FSPS_UPD) <= 0xc00, "FSPS_UPD too big"); |
| _Static_assert(sizeof(struct eeprom_layout) == 0x2000, "EEPROM layout size mismatch"); |
| |
| bool eeprom_read_buffer(void *blob, size_t read_offset, size_t size); |
| int check_signature(const size_t offset, const uint64_t signature); |
| struct eeprom_board_settings *get_board_settings(void); |
| struct eeprom_bmc_settings *get_bmc_settings(void); |
| const char *eeprom_read_serial(size_t offset, const char *fallback); |
| uint8_t get_bmc_hsi(void); |
| void report_eeprom_error(const size_t off); |
| bool eeprom_write_byte(const uint8_t data, const uint16_t write_offset); |
| bool write_board_settings(const struct eeprom_board_layout *new_layout); |
| |
| #define READ_EEPROM(section_type, section_name, dest, opt_name) \ |
| do { \ |
| typeof(dest->opt_name) __tmp; \ |
| size_t __off = offsetof(struct eeprom_layout, section_name); \ |
| bool ret = eeprom_read_buffer(&__tmp, \ |
| __off + offsetof(section_type, opt_name), \ |
| sizeof(__tmp)); \ |
| if (ret) { \ |
| report_eeprom_error(__off + offsetof(section_type, opt_name)); \ |
| } else { \ |
| dest->opt_name = __tmp; \ |
| } \ |
| } while (0) |
| |
| #define READ_EEPROM_FSP_M(dest, opt_name) READ_EEPROM(FSPM_UPD, raw_fspm_upd, dest, opt_name) |
| #define READ_EEPROM_FSP_S(dest, opt_name) READ_EEPROM(FSPS_UPD, raw_fsps_upd, dest, opt_name) |