mirror of
https://github.com/AsahiLinux/u-boot
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643eb6ea07
The TI J721E EVM system on module (SOM), the common processor board, and
the associated daughtercards have on-board I2C-based EEPROMs containing
board config data. Use the board detection infrastructure to do the
following:
1) Parse the J721E SOM EEPROM and populate items like board name, board
HW and SW revision as well as board serial number into the TI common
EEPROM data structure residing in SRAM scratch space
2) Check for presence of daughter card(s) by probing associated I2C
addresses used for on-board EEPROMs containing daughter card-specific
data. If such a card is found, parse the EEPROM data such as for
additional Ethernet MAC addresses and populate those into U-Boot
accordingly
3) Dynamically apply daughter card DTB overlays to the U-Boot (proper)
DTB during SPL execution
4) Dynamically create an U-Boot ENV variable called name_overlays
during U-Boot execution containing a list of daugherboard-specific
DTB overlays based on daughercards found to be used during Kernel
boot.
This patch adds support for the J721E system on module boards containing
the actual SoC ("J721EX-PM2-SOM", accessed via CONFIG_EEPROM_CHIP_ADDRESS),
the common processor board ("J7X-BASE-CPB"), the Quad-Port Ethernet
Expansion Board ("J7X-VSC8514-ETH"), the infotainment board
("J7X-INFOTAN-EXP") as well as for the gateway/Ethernet switch/industrial
expansion board ("J7X-GESI-EXP").
Signed-off-by: Andreas Dannenberg <dannenberg@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
457 lines
16 KiB
C
457 lines
16 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_emmc_boardid_get() - Fetch board ID information from eMMC
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*
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* ep in SRAM is populated by the this function that is currently
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* based on BeagleBone AI, but could be made more general across AM*
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* platforms.
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*/
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int __maybe_unused ti_emmc_boardid_get(void);
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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_k3_is() - Board detection logic for TI K3 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_k3_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
|
|
* vars for AM6-type boards
|
|
* @name: Name of the board
|
|
*
|
|
* If name is NULL, default_name is used.
|
|
*/
|
|
void set_board_info_env_am6(char *name);
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|
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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
|
|
*
|
|
* EEPROM should be already read before calling this function.
|
|
* The EEPROM contains 2 MAC addresses which define the MAC address
|
|
* range (i.e. first and last MAC address).
|
|
* This function sets the ethaddr environment variable for all
|
|
* the available MAC addresses starting from eth<index>addr.
|
|
*/
|
|
void board_ti_set_ethaddr(int index);
|
|
|
|
/**
|
|
* board_ti_am6_set_ethaddr- Sets the ethaddr environment from EEPROM
|
|
* @index: The first eth<index>addr environment variable to set
|
|
* @count: The number of MAC addresses to process
|
|
*
|
|
* EEPROM should be already read before calling this function. The EEPROM
|
|
* contains n dedicated MAC addresses. This function sets the ethaddr
|
|
* environment variable for all the available MAC addresses starting
|
|
* from eth<index>addr.
|
|
*/
|
|
void board_ti_am6_set_ethaddr(int index, int count);
|
|
|
|
/**
|
|
* board_ti_was_eeprom_read() - Check to see if the eeprom contents have been read
|
|
*
|
|
* This function is useful to determine if the eeprom has already been read and
|
|
* its contents have already been loaded into memory. It utiltzes the magic
|
|
* number that the header value is set to upon successful eeprom read.
|
|
*/
|
|
bool board_ti_was_eeprom_read(void);
|
|
|
|
/**
|
|
* ti_i2c_eeprom_am_set() - Setup the eeprom data with predefined values
|
|
* @name: Name of the board
|
|
* @rev: Revision of the board
|
|
*
|
|
* In some cases such as in RTC-only mode, we are able to skip reading eeprom
|
|
* and wasting i2c based initialization time by using predefined flags for
|
|
* detecting what platform we are booting on. For those platforms, provide
|
|
* a handy function to pre-program information.
|
|
*
|
|
* NOTE: many eeprom information such as serial number, mac address etc is not
|
|
* available.
|
|
*
|
|
* Return: 0 if all went fine, else return error.
|
|
*/
|
|
int ti_i2c_eeprom_am_set(const char *name, const char *rev);
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|
|
|
#endif /* __BOARD_DETECT_H */
|