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https://github.com/AsahiLinux/u-boot
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183fa08ae5
The AM654x EVM based on the TI K3 family of SoCs has an updated board detection EEPROM structure that contains a TLV record of dedicated MAC addresses rather than a range of MAC addresses as it was used on earlier platforms such as DRA7. Add a basic function that allows us setting up Ethernet MAC addresses into the U-Boot environment based on the MAC address record contained in the common TI EEPROM structure. Signed-off-by: Andreas Dannenberg <dannenberg@ti.com> Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
439 lines
15 KiB
C
439 lines
15 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Library to support early TI EVM EEPROM handling
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*
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* Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com
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*/
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#ifndef __BOARD_DETECT_H
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#define __BOARD_DETECT_H
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/* TI EEPROM MAGIC Header identifier */
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#define TI_EEPROM_HEADER_MAGIC 0xEE3355AA
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#define TI_DEAD_EEPROM_MAGIC 0xADEAD12C
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#define TI_EEPROM_HDR_NAME_LEN 8
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#define TI_EEPROM_HDR_REV_LEN 4
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#define TI_EEPROM_HDR_SERIAL_LEN 12
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#define TI_EEPROM_HDR_CONFIG_LEN 32
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#define TI_EEPROM_HDR_NO_OF_MAC_ADDR 3
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#define TI_EEPROM_HDR_ETH_ALEN 6
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/**
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* struct ti_am_eeprom - This structure holds data read in from the
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* AM335x, AM437x, AM57xx TI EVM EEPROMs.
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* @header: This holds the magic number
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* @name: The name of the board
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* @version: Board revision
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* @serial: Board serial number
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* @config: Reserved
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* @mac_addr: Any MAC addresses written in the EEPROM
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*
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* The data is this structure is read from the EEPROM on the board.
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* It is used for board detection which is based on name. It is used
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* to configure specific TI boards. This allows booting of multiple
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* TI boards with a single MLO and u-boot.
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*/
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struct ti_am_eeprom {
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unsigned int header;
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char name[TI_EEPROM_HDR_NAME_LEN];
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char version[TI_EEPROM_HDR_REV_LEN];
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char serial[TI_EEPROM_HDR_SERIAL_LEN];
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char config[TI_EEPROM_HDR_CONFIG_LEN];
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char mac_addr[TI_EEPROM_HDR_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN];
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} __attribute__ ((__packed__));
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/* AM6x TI EVM EEPROM Definitions */
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#define TI_AM6_EEPROM_RECORD_BOARD_ID 0x01
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#define TI_AM6_EEPROM_RECORD_BOARD_INFO 0x10
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#define TI_AM6_EEPROM_RECORD_DDR_INFO 0x11
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#define TI_AM6_EEPROM_RECORD_DDR_SPD 0x12
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#define TI_AM6_EEPROM_RECORD_MAC_INFO 0x13
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#define TI_AM6_EEPROM_RECORD_END_LIST 0xFE
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/*
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* Common header for AM6x TI EVM EEPROM records. Used to encapsulate the config
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* EEPROM in its entirety as well as for individual records contained within.
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*/
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struct ti_am6_eeprom_record_header {
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u8 id;
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u16 len;
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} __attribute__ ((__packed__));
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/* AM6x TI EVM EEPROM board ID structure */
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struct ti_am6_eeprom_record_board_id {
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u32 magic_number;
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struct ti_am6_eeprom_record_header header;
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} __attribute__ ((__packed__));
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/* AM6x TI EVM EEPROM board info structure */
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#define AM6_EEPROM_HDR_NAME_LEN 16
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#define AM6_EEPROM_HDR_VERSION_LEN 2
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#define AM6_EEPROM_HDR_PROC_NR_LEN 4
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#define AM6_EEPROM_HDR_VARIANT_LEN 2
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#define AM6_EEPROM_HDR_PCB_REV_LEN 2
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#define AM6_EEPROM_HDR_SCH_BOM_REV_LEN 2
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#define AM6_EEPROM_HDR_SW_REV_LEN 2
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#define AM6_EEPROM_HDR_VID_LEN 2
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#define AM6_EEPROM_HDR_BLD_WK_LEN 2
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#define AM6_EEPROM_HDR_BLD_YR_LEN 2
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#define AM6_EEPROM_HDR_4P_NR_LEN 6
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#define AM6_EEPROM_HDR_SERIAL_LEN 4
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struct ti_am6_eeprom_record_board_info {
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char name[AM6_EEPROM_HDR_NAME_LEN];
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char version[AM6_EEPROM_HDR_VERSION_LEN];
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char proc_number[AM6_EEPROM_HDR_PROC_NR_LEN];
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char variant[AM6_EEPROM_HDR_VARIANT_LEN];
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char pcb_revision[AM6_EEPROM_HDR_PCB_REV_LEN];
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char schematic_bom_revision[AM6_EEPROM_HDR_SCH_BOM_REV_LEN];
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char software_revision[AM6_EEPROM_HDR_SW_REV_LEN];
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char vendor_id[AM6_EEPROM_HDR_VID_LEN];
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char build_week[AM6_EEPROM_HDR_BLD_WK_LEN];
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char build_year[AM6_EEPROM_HDR_BLD_YR_LEN];
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char board_4p_number[AM6_EEPROM_HDR_4P_NR_LEN];
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char serial[AM6_EEPROM_HDR_SERIAL_LEN];
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} __attribute__ ((__packed__));
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/* Memory location to keep a copy of the AM6 board info record */
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#define TI_AM6_EEPROM_BD_INFO_DATA ((struct ti_am6_eeprom_record_board_info *) \
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TI_SRAM_SCRATCH_BOARD_EEPROM_START)
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/* AM6x TI EVM EEPROM DDR info structure */
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#define TI_AM6_EEPROM_DDR_CTRL_INSTANCE_MASK GENMASK(1, 0)
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#define TI_AM6_EEPROM_DDR_CTRL_INSTANCE_SHIFT 0
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#define TI_AM6_EEPROM_DDR_CTRL_SPD_DATA_LOC_MASK GENMASK(3, 2)
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#define TI_AM6_EEPROM_DDR_CTRL_SPD_DATA_LOC_NA (0 << 2)
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#define TI_AM6_EEPROM_DDR_CTRL_SPD_DATA_LOC_BOARDID (2 << 2)
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#define TI_AM6_EEPROM_DDR_CTRL_SPD_DATA_LOC_I2C51 (3 << 2)
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#define TI_AM6_EEPROM_DDR_CTRL_MEM_TYPE_MASK GENMASK(5, 4)
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#define TI_AM6_EEPROM_DDR_CTRL_MEM_TYPE_DDR3 (0 << 4)
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#define TI_AM6_EEPROM_DDR_CTRL_MEM_TYPE_DDR4 (1 << 4)
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#define TI_AM6_EEPROM_DDR_CTRL_MEM_TYPE_LPDDR4 (2 << 4)
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#define TI_AM6_EEPROM_DDR_CTRL_IF_DATA_WIDTH_MASK GENMASK(7, 6)
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#define TI_AM6_EEPROM_DDR_CTRL_IF_DATA_WIDTH_16 (0 << 6)
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#define TI_AM6_EEPROM_DDR_CTRL_IF_DATA_WIDTH_32 (1 << 6)
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#define TI_AM6_EEPROM_DDR_CTRL_IF_DATA_WIDTH_64 (2 << 6)
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#define TI_AM6_EEPROM_DDR_CTRL_DEV_DATA_WIDTH_MASK GENMASK(9, 8)
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#define TI_AM6_EEPROM_DDR_CTRL_DEV_DATA_WIDTH_8 (0 << 8)
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#define TI_AM6_EEPROM_DDR_CTRL_DEV_DATA_WIDTH_16 (1 << 8)
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#define TI_AM6_EEPROM_DDR_CTRL_DEV_DATA_WIDTH_32 (2 << 8)
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#define TI_AM6_EEPROM_DDR_CTRL_RANKS_2 BIT(10)
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#define TI_AM6_EEPROM_DDR_CTRL_DENS_MASK GENMASK(13, 11)
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#define TI_AM6_EEPROM_DDR_CTRL_DENS_1GB (0 << 11)
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#define TI_AM6_EEPROM_DDR_CTRL_DENS_2GB (1 << 11)
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#define TI_AM6_EEPROM_DDR_CTRL_DENS_4GB (2 << 11)
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#define TI_AM6_EEPROM_DDR_CTRL_DENS_8GB (3 << 11)
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#define TI_AM6_EEPROM_DDR_CTRL_DENS_12GB (4 << 11)
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#define TI_AM6_EEPROM_DDR_CTRL_DENS_16GB (5 << 11)
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#define TI_AM6_EEPROM_DDR_CTRL_DENS_24GB (6 << 11)
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#define TI_AM6_EEPROM_DDR_CTRL_DENS_32GB (7 << 11)
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#define TI_AM6_EEPROM_DDR_CTRL_ECC BIT(14)
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struct ti_am6_eeprom_record_ddr_info {
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u16 ddr_control;
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} __attribute__ ((__packed__));
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/* AM6x TI EVM EEPROM DDR SPD structure */
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#define TI_AM6_EEPROM_DDR_SPD_INSTANCE_MASK GENMASK(1, 0)
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#define TI_AM6_EEPROM_DDR_SPD_INSTANCE_SHIFT 0
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#define TI_AM6_EEPROM_DDR_SPD_MEM_TYPE_MASK GENMASK(4, 3)
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#define TI_AM6_EEPROM_DDR_SPD_MEM_TYPE_DDR3 (0 << 3)
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#define TI_AM6_EEPROM_DDR_SPD_MEM_TYPE_DDR4 (1 << 3)
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#define TI_AM6_EEPROM_DDR_SPD_MEM_TYPE_LPDDR4 (2 << 3)
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#define TI_AM6_EEPROM_DDR_SPD_DATA_LEN 512
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struct ti_am6_eeprom_record_ddr_spd {
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u16 spd_control;
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u8 data[TI_AM6_EEPROM_DDR_SPD_DATA_LEN];
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} __attribute__ ((__packed__));
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/* AM6x TI EVM EEPROM MAC info structure */
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#define TI_AM6_EEPROM_MAC_INFO_INSTANCE_MASK GENMASK(2, 0)
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#define TI_AM6_EEPROM_MAC_INFO_INSTANCE_SHIFT 0
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#define TI_AM6_EEPROM_MAC_ADDR_COUNT_MASK GENMASK(7, 3)
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#define TI_AM6_EEPROM_MAC_ADDR_COUNT_SHIFT 3
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#define TI_AM6_EEPROM_MAC_ADDR_MAX_COUNT 32
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struct ti_am6_eeprom_record_mac_info {
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u16 mac_control;
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u8 mac_addr[TI_AM6_EEPROM_MAC_ADDR_MAX_COUNT][TI_EEPROM_HDR_ETH_ALEN];
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} __attribute__ ((__packed__));
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struct ti_am6_eeprom_record {
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struct ti_am6_eeprom_record_header header;
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union {
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struct ti_am6_eeprom_record_board_info board_info;
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struct ti_am6_eeprom_record_ddr_info ddr_info;
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struct ti_am6_eeprom_record_ddr_spd ddr_spd;
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struct ti_am6_eeprom_record_mac_info mac_info;
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} data;
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} __attribute__ ((__packed__));
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/* DRA7 EEPROM MAGIC Header identifier */
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#define DRA7_EEPROM_HEADER_MAGIC 0xAA5533EE
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#define DRA7_EEPROM_HDR_NAME_LEN 16
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#define DRA7_EEPROM_HDR_CONFIG_LEN 4
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/**
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* struct dra7_eeprom - This structure holds data read in from the DRA7 EVM
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* EEPROMs.
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* @header: This holds the magic number
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* @name: The name of the board
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* @version_major: Board major version
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* @version_minor: Board minor version
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* @config: Board specific config options
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* @emif1_size: Size of DDR attached to EMIF1
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* @emif2_size: Size of DDR attached to EMIF2
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*
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* The data is this structure is read from the EEPROM on the board.
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* It is used for board detection which is based on name. It is used
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* to configure specific DRA7 boards. This allows booting of multiple
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* DRA7 boards with a single MLO and u-boot.
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*/
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struct dra7_eeprom {
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u32 header;
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char name[DRA7_EEPROM_HDR_NAME_LEN];
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u16 version_major;
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u16 version_minor;
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char config[DRA7_EEPROM_HDR_CONFIG_LEN];
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u32 emif1_size;
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u32 emif2_size;
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} __attribute__ ((__packed__));
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/**
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* struct ti_common_eeprom - Null terminated, usable EEPROM contents.
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* header: Magic number
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* @name: NULL terminated name
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* @version: NULL terminated version
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* @serial: NULL terminated serial number
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* @config: NULL terminated Board specific config options
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* @mac_addr: MAC addresses
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* @emif1_size: Size of the ddr available on emif1
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* @emif2_size: Size of the ddr available on emif2
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*/
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struct ti_common_eeprom {
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u32 header;
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char name[TI_EEPROM_HDR_NAME_LEN + 1];
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char version[TI_EEPROM_HDR_REV_LEN + 1];
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char serial[TI_EEPROM_HDR_SERIAL_LEN + 1];
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char config[TI_EEPROM_HDR_CONFIG_LEN + 1];
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char mac_addr[TI_EEPROM_HDR_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN];
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u64 emif1_size;
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u64 emif2_size;
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};
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#define TI_EEPROM_DATA ((struct ti_common_eeprom *)\
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TI_SRAM_SCRATCH_BOARD_EEPROM_START)
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/*
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* Maximum number of Ethernet MAC addresses extracted from the AM6x on-board
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* EEPROM during the initial probe and carried forward in SRAM.
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*/
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#define AM6_EEPROM_HDR_NO_OF_MAC_ADDR 8
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/**
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* struct ti_am6_eeprom - Null terminated, usable EEPROM contents, as extracted
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* from the AM6 on-board EEPROM. Note that we only carry a subset of data
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* at this time to be considerate about memory consumption.
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* @header: Magic number for data validity indication
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* @name: NULL terminated name
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* @version: NULL terminated version
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* @software_revision: NULL terminated software revision
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* @serial: Board serial number
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* @mac_addr_cnt: Number of MAC addresses stored in this object
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* @mac_addr: MAC addresses
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*/
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struct ti_am6_eeprom {
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u32 header;
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char name[AM6_EEPROM_HDR_NAME_LEN + 1];
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char version[AM6_EEPROM_HDR_VERSION_LEN + 1];
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char software_revision[AM6_EEPROM_HDR_SW_REV_LEN + 1];
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char serial[AM6_EEPROM_HDR_SERIAL_LEN + 1];
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u8 mac_addr_cnt;
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char mac_addr[AM6_EEPROM_HDR_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN];
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};
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#define TI_AM6_EEPROM_DATA ((struct ti_am6_eeprom *) \
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TI_SRAM_SCRATCH_BOARD_EEPROM_START)
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/**
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* ti_i2c_eeprom_am_get() - Consolidated eeprom data collection for AM* TI EVMs
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* @bus_addr: I2C bus address
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* @dev_addr: I2C slave address
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*
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* ep in SRAM is populated by the this AM generic function that consolidates
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* the basic initialization logic common across all AM* platforms.
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*/
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int ti_i2c_eeprom_am_get(int bus_addr, int dev_addr);
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/**
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* ti_i2c_eeprom_dra7_get() - Consolidated eeprom data for DRA7 TI EVMs
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* @bus_addr: I2C bus address
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* @dev_addr: I2C slave address
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*/
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int ti_i2c_eeprom_dra7_get(int bus_addr, int dev_addr);
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/**
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* ti_i2c_eeprom_am6_get() - Consolidated eeprom data for AM6x TI EVMs and
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* associated daughter cards, parsed into user-
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* provided data structures
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* @bus_addr: I2C bus address
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* @dev_addr: I2C slave address
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* @ep: Pointer to structure receiving AM6-specific header data
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* @mac_addr: Pointer to memory receiving parsed MAC addresses. May be
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* NULL to skip MAC parsing.
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* @mac_addr_max_cnt: Maximum number of MAC addresses that can be stored into
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* mac_addr. May be NULL to skip MAC parsing.
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* @mac_addr_cnt: Pointer to a location returning how many MAC addressed got
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* actually parsed.
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*/
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int __maybe_unused ti_i2c_eeprom_am6_get(int bus_addr, int dev_addr,
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struct ti_am6_eeprom *ep,
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char **mac_addr,
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u8 mac_addr_max_cnt,
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u8 *mac_addr_cnt);
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/**
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* ti_i2c_eeprom_am6_get_base() - Consolidated eeprom data for AM6x TI EVMs
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* @bus_addr: I2C bus address
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* @dev_addr: I2C slave address
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*/
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int __maybe_unused ti_i2c_eeprom_am6_get_base(int bus_addr, int dev_addr);
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/**
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* board_ti_is() - Board detection logic for TI EVMs
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* @name_tag: Tag used in eeprom for the board
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*
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* Return: false if board information does not match OR eeprom wasn't read.
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* true otherwise
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*/
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bool board_ti_is(char *name_tag);
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/**
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* board_ti_rev_is() - Compare board revision for TI EVMs
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* @rev_tag: Revision tag to check in eeprom
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* @cmp_len: How many chars to compare?
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*
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* NOTE: revision information is often messed up (hence the str len match) :(
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*
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* Return: false if board information does not match OR eeprom wasn't read.
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* true otherwise
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*/
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bool board_ti_rev_is(char *rev_tag, int cmp_len);
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/**
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* board_ti_get_rev() - Get board revision for TI EVMs
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*
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* Return: Empty string if eeprom wasn't read.
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* Board revision otherwise
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*/
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char *board_ti_get_rev(void);
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/**
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* board_ti_get_config() - Get board config for TI EVMs
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*
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* Return: Empty string if eeprom wasn't read.
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* Board config otherwise
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*/
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char *board_ti_get_config(void);
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/**
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* board_ti_get_name() - Get board name for TI EVMs
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*
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* Return: Empty string if eeprom wasn't read.
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* Board name otherwise
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*/
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char *board_ti_get_name(void);
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/**
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* board_ti_get_eth_mac_addr() - Get Ethernet MAC address from EEPROM MAC list
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* @index: 0 based index within the list of MAC addresses
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* @mac_addr: MAC address contained at the index is returned here
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*
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* Does not sanity check the mac_addr. Whatever is stored in EEPROM is returned.
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*/
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void board_ti_get_eth_mac_addr(int index, u8 mac_addr[TI_EEPROM_HDR_ETH_ALEN]);
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/**
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* board_ti_get_emif1_size() - Get size of the DDR on emif1 for TI EVMs
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*
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* Return: NULL if eeprom wasn't read or emif1_size is not available.
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*/
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u64 board_ti_get_emif1_size(void);
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/**
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* board_ti_get_emif2_size() - Get size of the DDR on emif2 for TI EVMs
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*
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* Return: NULL if eeprom wasn't read or emif2_size is not available.
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*/
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u64 board_ti_get_emif2_size(void);
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/**
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* set_board_info_env() - Setup commonly used board information environment vars
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* @name: Name of the board
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*
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* If name is NULL, default_name is used.
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*/
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void set_board_info_env(char *name);
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/**
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* set_board_info_env_am6() - Setup commonly used board information environment
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* vars for AM6-type boards
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* @name: Name of the board
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*
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* If name is NULL, default_name is used.
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*/
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void set_board_info_env_am6(char *name);
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/**
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* board_ti_set_ethaddr- Sets the ethaddr environment from EEPROM
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* @index: The first eth<index>addr environment variable to set
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*
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* EEPROM should be already read before calling this function.
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* The EEPROM contains 2 MAC addresses which define the MAC address
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* range (i.e. first and last MAC address).
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* This function sets the ethaddr environment variable for all
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* the available MAC addresses starting from eth<index>addr.
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*/
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void board_ti_set_ethaddr(int index);
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/**
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* board_ti_am6_set_ethaddr- Sets the ethaddr environment from EEPROM
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* @index: The first eth<index>addr environment variable to set
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* @count: The number of MAC addresses to process
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*
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* EEPROM should be already read before calling this function. The EEPROM
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* contains n dedicated MAC addresses. This function sets the ethaddr
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* environment variable for all the available MAC addresses starting
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* from eth<index>addr.
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*/
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void board_ti_am6_set_ethaddr(int index, int count);
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/**
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* board_ti_was_eeprom_read() - Check to see if the eeprom contents have been read
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*
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* This function is useful to determine if the eeprom has already been read and
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* its contents have already been loaded into memory. It utiltzes the magic
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* number that the header value is set to upon successful eeprom read.
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*/
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bool board_ti_was_eeprom_read(void);
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/**
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* ti_i2c_eeprom_am_set() - Setup the eeprom data with predefined values
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* @name: Name of the board
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* @rev: Revision of the board
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*
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* In some cases such as in RTC-only mode, we are able to skip reading eeprom
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* and wasting i2c based initialization time by using predefined flags for
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* detecting what platform we are booting on. For those platforms, provide
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* a handy function to pre-program information.
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*
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* NOTE: many eeprom information such as serial number, mac address etc is not
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* available.
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*
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* Return: 0 if all went fine, else return error.
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*/
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int ti_i2c_eeprom_am_set(const char *name, const char *rev);
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#endif /* __BOARD_DETECT_H */
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