diff options
Diffstat (limited to 'roms/u-boot/board/ti/common')
| -rw-r--r-- | roms/u-boot/board/ti/common/Kconfig | 51 | ||||
| -rw-r--r-- | roms/u-boot/board/ti/common/Makefile | 5 | ||||
| -rw-r--r-- | roms/u-boot/board/ti/common/board_detect.c | 793 | ||||
| -rw-r--r-- | roms/u-boot/board/ti/common/board_detect.h | 471 | ||||
| -rw-r--r-- | roms/u-boot/board/ti/common/cape_detect.c | 96 | ||||
| -rw-r--r-- | roms/u-boot/board/ti/common/cape_detect.h | 28 |
6 files changed, 1444 insertions, 0 deletions
diff --git a/roms/u-boot/board/ti/common/Kconfig b/roms/u-boot/board/ti/common/Kconfig new file mode 100644 index 000000000..49edd9801 --- /dev/null +++ b/roms/u-boot/board/ti/common/Kconfig @@ -0,0 +1,51 @@ +config TI_I2C_BOARD_DETECT + bool "Support for Board detection for TI platforms" + help + Support for detection board information on Texas Instrument's + Evaluation Boards which have I2C based EEPROM detection + +config EEPROM_BUS_ADDRESS + int "Board EEPROM's I2C bus address" + range 0 8 + default 0 + depends on TI_I2C_BOARD_DETECT + +config EEPROM_CHIP_ADDRESS + hex "Board EEPROM's I2C chip address" + range 0 0xff + default 0x50 + depends on TI_I2C_BOARD_DETECT + +config CAPE_EEPROM_BUS_NUM + int "Cape EEPROM's I2C bus address" + range 0 8 + default 2 + depends on CMD_EXTENSION + +config TI_COMMON_CMD_OPTIONS + bool "Enable cmd options on TI platforms" + imply CMD_ASKENV + imply CMD_BOOTZ + imply CRC32_VERIFY if ARCH_KEYSTONE + imply CMD_DFU if USB_GADGET_DOWNLOAD + imply CMD_DHCP + imply CMD_EEPROM + imply CMD_EXT2 + imply CMD_EXT4 + imply CMD_EXT4_WRITE + imply CMD_FAT + imply FAT_WRITE if CMD_FAT + imply CMD_FS_GENERIC + imply CMD_GPIO + imply CMD_GPT + imply CMD_I2C + imply CMD_MII + imply CMD_MMC + imply CMD_PART + imply CMD_PING + imply CMD_PMIC if DM_PMIC + imply CMD_REGULATOR if DM_REGULATOR + imply CMD_SF if SPI_FLASH + imply CMD_SPI + imply CMD_TIME + imply CMD_USB if USB diff --git a/roms/u-boot/board/ti/common/Makefile b/roms/u-boot/board/ti/common/Makefile new file mode 100644 index 000000000..3172d87b4 --- /dev/null +++ b/roms/u-boot/board/ti/common/Makefile @@ -0,0 +1,5 @@ +# SPDX-License-Identifier: GPL-2.0+ +# Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/ + +obj-${CONFIG_TI_I2C_BOARD_DETECT} += board_detect.o +obj-${CONFIG_CMD_EXTENSION} += cape_detect.o diff --git a/roms/u-boot/board/ti/common/board_detect.c b/roms/u-boot/board/ti/common/board_detect.c new file mode 100644 index 000000000..de92eb098 --- /dev/null +++ b/roms/u-boot/board/ti/common/board_detect.c @@ -0,0 +1,793 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Library to support early TI EVM EEPROM handling + * + * Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/ + * Lokesh Vutla + * Steve Kipisz + */ + +#include <common.h> +#include <eeprom.h> +#include <log.h> +#include <net.h> +#include <asm/arch/hardware.h> +#include <asm/omap_common.h> +#include <dm/uclass.h> +#include <env.h> +#include <i2c.h> +#include <mmc.h> +#include <errno.h> +#include <malloc.h> + +#include "board_detect.h" + +#if !CONFIG_IS_ENABLED(DM_I2C) +/** + * ti_i2c_eeprom_init - Initialize an i2c bus and probe for a device + * @i2c_bus: i2c bus number to initialize + * @dev_addr: Device address to probe for + * + * Return: 0 on success or corresponding error on failure. + */ +static int __maybe_unused ti_i2c_eeprom_init(int i2c_bus, int dev_addr) +{ + int rc; + + if (i2c_bus >= 0) { + rc = i2c_set_bus_num(i2c_bus); + if (rc) + return rc; + } + + return i2c_probe(dev_addr); +} + +/** + * ti_i2c_eeprom_read - Read data from an EEPROM + * @dev_addr: The device address of the EEPROM + * @offset: Offset to start reading in the EEPROM + * @ep: Pointer to a buffer to read into + * @epsize: Size of buffer + * + * Return: 0 on success or corresponding result of i2c_read + */ +static int __maybe_unused ti_i2c_eeprom_read(int dev_addr, int offset, + uchar *ep, int epsize) +{ + return i2c_read(dev_addr, offset, 2, ep, epsize); +} +#endif + +/** + * ti_eeprom_string_cleanup() - Handle eeprom programming errors + * @s: eeprom string (should be NULL terminated) + * + * Some Board manufacturers do not add a NULL termination at the + * end of string, instead some binary information is kludged in, hence + * convert the string to just printable characters of ASCII chart. + */ +static void __maybe_unused ti_eeprom_string_cleanup(char *s) +{ + int i, l; + + l = strlen(s); + for (i = 0; i < l; i++, s++) + if (*s < ' ' || *s > '~') { + *s = 0; + break; + } +} + +__weak void gpi2c_init(void) +{ +} + +static int __maybe_unused ti_i2c_eeprom_get(int bus_addr, int dev_addr, + u32 header, u32 size, uint8_t *ep) +{ + u32 hdr_read; + int rc; + +#if CONFIG_IS_ENABLED(DM_I2C) + struct udevice *dev; + struct udevice *bus; + + rc = uclass_get_device_by_seq(UCLASS_I2C, bus_addr, &bus); + if (rc) + return rc; + rc = dm_i2c_probe(bus, dev_addr, 0, &dev); + if (rc) + return rc; + + /* + * Read the header first then only read the other contents. + */ + rc = i2c_set_chip_offset_len(dev, 2); + if (rc) + return rc; + + rc = dm_i2c_read(dev, 0, (uint8_t *)&hdr_read, 4); + if (rc) + return rc; + + /* Corrupted data??? */ + if (hdr_read != header) { + /* + * read the eeprom header using i2c again, but use only a + * 1 byte address (some legacy boards need this..) + */ + rc = i2c_set_chip_offset_len(dev, 1); + if (rc) + return rc; + + rc = dm_i2c_read(dev, 0, (uint8_t *)&hdr_read, 4); + if (rc) + return rc; + } + if (hdr_read != header) + return -1; + + rc = dm_i2c_read(dev, 0, ep, size); + if (rc) + return rc; +#else + u32 byte; + + gpi2c_init(); + rc = ti_i2c_eeprom_init(bus_addr, dev_addr); + if (rc) + return rc; + + /* + * Read the header first then only read the other contents. + */ + byte = 2; + + rc = i2c_read(dev_addr, 0x0, byte, (uint8_t *)&hdr_read, 4); + if (rc) + return rc; + + /* Corrupted data??? */ + if (hdr_read != header) { + /* + * read the eeprom header using i2c again, but use only a + * 1 byte address (some legacy boards need this..) + */ + byte = 1; + rc = i2c_read(dev_addr, 0x0, byte, (uint8_t *)&hdr_read, + 4); + if (rc) + return rc; + } + if (hdr_read != header) + return -1; + + rc = i2c_read(dev_addr, 0x0, byte, ep, size); + if (rc) + return rc; +#endif + return 0; +} + +int __maybe_unused ti_emmc_boardid_get(void) +{ + int rc; + struct udevice *dev; + struct mmc *mmc; + struct ti_common_eeprom *ep; + struct ti_am_eeprom brdid; + struct blk_desc *bdesc; + uchar *buffer; + + ep = TI_EEPROM_DATA; + if (ep->header == TI_EEPROM_HEADER_MAGIC) + return 0; /* EEPROM has already been read */ + + /* Initialize with a known bad marker for emmc fails.. */ + ep->header = TI_DEAD_EEPROM_MAGIC; + ep->name[0] = 0x0; + ep->version[0] = 0x0; + ep->serial[0] = 0x0; + ep->config[0] = 0x0; + + /* uclass object initialization */ + rc = mmc_initialize(NULL); + if (rc) + return rc; + + /* Set device to /dev/mmcblk1 */ + rc = uclass_get_device(UCLASS_MMC, 1, &dev); + if (rc) + return rc; + + /* Grab the mmc device */ + mmc = mmc_get_mmc_dev(dev); + if (!mmc) + return -ENODEV; + + /* mmc hardware initialization routine */ + mmc_init(mmc); + + /* Set partition to /dev/mmcblk1boot1 */ + rc = mmc_switch_part(mmc, 2); + if (rc) + return rc; + + buffer = malloc(mmc->read_bl_len); + if (!buffer) + return -ENOMEM; + + bdesc = mmc_get_blk_desc(mmc); + + /* blk_dread returns the number of blocks read*/ + if (blk_dread(bdesc, 0L, 1, buffer) != 1) { + rc = -EIO; + goto cleanup; + } + + memcpy(&brdid, buffer, sizeof(brdid)); + + /* Write out the ep struct values */ + ep->header = brdid.header; + strlcpy(ep->name, brdid.name, TI_EEPROM_HDR_NAME_LEN + 1); + ti_eeprom_string_cleanup(ep->name); + strlcpy(ep->version, brdid.version, TI_EEPROM_HDR_REV_LEN + 1); + ti_eeprom_string_cleanup(ep->version); + strlcpy(ep->serial, brdid.serial, TI_EEPROM_HDR_SERIAL_LEN + 1); + ti_eeprom_string_cleanup(ep->serial); + +cleanup: + free(buffer); + + return rc; +} + +int __maybe_unused ti_i2c_eeprom_am_set(const char *name, const char *rev) +{ + struct ti_common_eeprom *ep; + + if (!name || !rev) + return -1; + + ep = TI_EEPROM_DATA; + if (ep->header == TI_EEPROM_HEADER_MAGIC) + goto already_set; + + /* Set to 0 all fields */ + memset(ep, 0, sizeof(*ep)); + strncpy(ep->name, name, TI_EEPROM_HDR_NAME_LEN); + strncpy(ep->version, rev, TI_EEPROM_HDR_REV_LEN); + /* Some dummy serial number to identify the platform */ + strncpy(ep->serial, "0000", TI_EEPROM_HDR_SERIAL_LEN); + /* Mark it with a valid header */ + ep->header = TI_EEPROM_HEADER_MAGIC; + +already_set: + return 0; +} + +int __maybe_unused ti_i2c_eeprom_am_get(int bus_addr, int dev_addr) +{ + int rc; + struct ti_am_eeprom am_ep; + struct ti_common_eeprom *ep; + + ep = TI_EEPROM_DATA; +#ifndef CONFIG_SPL_BUILD + if (ep->header == TI_EEPROM_HEADER_MAGIC) + return 0; /* EEPROM has already been read */ +#endif + + /* Initialize with a known bad marker for i2c fails.. */ + ep->header = TI_DEAD_EEPROM_MAGIC; + ep->name[0] = 0x0; + ep->version[0] = 0x0; + ep->serial[0] = 0x0; + ep->config[0] = 0x0; + + rc = ti_i2c_eeprom_get(bus_addr, dev_addr, TI_EEPROM_HEADER_MAGIC, + sizeof(am_ep), (uint8_t *)&am_ep); + if (rc) + return rc; + + ep->header = am_ep.header; + strlcpy(ep->name, am_ep.name, TI_EEPROM_HDR_NAME_LEN + 1); + ti_eeprom_string_cleanup(ep->name); + + /* BeagleBone Green '1' eeprom, board_rev: 0x1a 0x00 0x00 0x00 */ + if (am_ep.version[0] == 0x1a && am_ep.version[1] == 0x00 && + am_ep.version[2] == 0x00 && am_ep.version[3] == 0x00) + strlcpy(ep->version, "BBG1", TI_EEPROM_HDR_REV_LEN + 1); + else + strlcpy(ep->version, am_ep.version, TI_EEPROM_HDR_REV_LEN + 1); + ti_eeprom_string_cleanup(ep->version); + strlcpy(ep->serial, am_ep.serial, TI_EEPROM_HDR_SERIAL_LEN + 1); + ti_eeprom_string_cleanup(ep->serial); + strlcpy(ep->config, am_ep.config, TI_EEPROM_HDR_CONFIG_LEN + 1); + ti_eeprom_string_cleanup(ep->config); + + memcpy(ep->mac_addr, am_ep.mac_addr, + TI_EEPROM_HDR_NO_OF_MAC_ADDR * TI_EEPROM_HDR_ETH_ALEN); + + return 0; +} + +int __maybe_unused ti_i2c_eeprom_dra7_get(int bus_addr, int dev_addr) +{ + int rc, offset = 0; + struct dra7_eeprom dra7_ep; + struct ti_common_eeprom *ep; + + ep = TI_EEPROM_DATA; +#ifndef CONFIG_SPL_BUILD + if (ep->header == DRA7_EEPROM_HEADER_MAGIC) + return 0; /* EEPROM has already been read */ +#endif + + /* Initialize with a known bad marker for i2c fails.. */ + ep->header = TI_DEAD_EEPROM_MAGIC; + ep->name[0] = 0x0; + ep->version[0] = 0x0; + ep->serial[0] = 0x0; + ep->config[0] = 0x0; + ep->emif1_size = 0; + ep->emif2_size = 0; + + rc = ti_i2c_eeprom_get(bus_addr, dev_addr, DRA7_EEPROM_HEADER_MAGIC, + sizeof(dra7_ep), (uint8_t *)&dra7_ep); + if (rc) + return rc; + + ep->header = dra7_ep.header; + strlcpy(ep->name, dra7_ep.name, TI_EEPROM_HDR_NAME_LEN + 1); + ti_eeprom_string_cleanup(ep->name); + + offset = dra7_ep.version_major - 1; + + /* Rev F is skipped */ + if (offset >= 5) + offset = offset + 1; + snprintf(ep->version, TI_EEPROM_HDR_REV_LEN + 1, "%c.%d", + 'A' + offset, dra7_ep.version_minor); + ti_eeprom_string_cleanup(ep->version); + ep->emif1_size = (u64)dra7_ep.emif1_size; + ep->emif2_size = (u64)dra7_ep.emif2_size; + strlcpy(ep->config, dra7_ep.config, TI_EEPROM_HDR_CONFIG_LEN + 1); + ti_eeprom_string_cleanup(ep->config); + + return 0; +} + +static int ti_i2c_eeprom_am6_parse_record(struct ti_am6_eeprom_record *record, + struct ti_am6_eeprom *ep, + char **mac_addr, + u8 mac_addr_max_cnt, + u8 *mac_addr_cnt) +{ + switch (record->header.id) { + case TI_AM6_EEPROM_RECORD_BOARD_INFO: + if (record->header.len != sizeof(record->data.board_info)) + return -EINVAL; + + if (!ep) + break; + + /* Populate (and clean, if needed) the board name */ + strlcpy(ep->name, record->data.board_info.name, + sizeof(ep->name)); + ti_eeprom_string_cleanup(ep->name); + + /* Populate selected other fields from the board info record */ + strlcpy(ep->version, record->data.board_info.version, + sizeof(ep->version)); + strlcpy(ep->software_revision, + record->data.board_info.software_revision, + sizeof(ep->software_revision)); + strlcpy(ep->serial, record->data.board_info.serial, + sizeof(ep->serial)); + break; + case TI_AM6_EEPROM_RECORD_MAC_INFO: + if (record->header.len != sizeof(record->data.mac_info)) + return -EINVAL; + + if (!mac_addr || !mac_addr_max_cnt) + break; + + *mac_addr_cnt = ((record->data.mac_info.mac_control & + TI_AM6_EEPROM_MAC_ADDR_COUNT_MASK) >> + TI_AM6_EEPROM_MAC_ADDR_COUNT_SHIFT) + 1; + + /* + * The EEPROM can (but may not) hold a very large amount + * of MAC addresses, by far exceeding what we want/can store + * in the common memory array, so only grab what we can fit. + * Note that a value of 0 means 1 MAC address, and so on. + */ + *mac_addr_cnt = min(*mac_addr_cnt, mac_addr_max_cnt); + + memcpy(mac_addr, record->data.mac_info.mac_addr, + *mac_addr_cnt * TI_EEPROM_HDR_ETH_ALEN); + break; + case 0x00: + /* Illegal value... Fall through... */ + case 0xFF: + /* Illegal value... Something went horribly wrong... */ + return -EINVAL; + default: + pr_warn("%s: Ignoring record id %u\n", __func__, + record->header.id); + } + + return 0; +} + +int __maybe_unused ti_i2c_eeprom_am6_get(int bus_addr, int dev_addr, + struct ti_am6_eeprom *ep, + char **mac_addr, + u8 mac_addr_max_cnt, + u8 *mac_addr_cnt) +{ + struct udevice *dev; + struct udevice *bus; + unsigned int eeprom_addr; + struct ti_am6_eeprom_record_board_id board_id; + struct ti_am6_eeprom_record record; + int rc; + + /* Initialize with a known bad marker for i2c fails.. */ + memset(ep, 0, sizeof(*ep)); + ep->header = TI_DEAD_EEPROM_MAGIC; + + /* Read the board ID record which is always the first EEPROM record */ + rc = ti_i2c_eeprom_get(bus_addr, dev_addr, TI_EEPROM_HEADER_MAGIC, + sizeof(board_id), (uint8_t *)&board_id); + if (rc) + return rc; + + if (board_id.header.id != TI_AM6_EEPROM_RECORD_BOARD_ID) { + pr_err("%s: Invalid board ID record!\n", __func__); + return -EINVAL; + } + + /* Establish DM handle to board config EEPROM */ + rc = uclass_get_device_by_seq(UCLASS_I2C, bus_addr, &bus); + if (rc) + return rc; + rc = i2c_get_chip(bus, dev_addr, 1, &dev); + if (rc) + return rc; + + ep->header = TI_EEPROM_HEADER_MAGIC; + + /* Ready to parse TLV structure. Initialize variables... */ + *mac_addr_cnt = 0; + + /* + * After the all-encompassing board ID record all other records follow + * a TLV-type scheme. Point to the first such record and then start + * parsing those one by one. + */ + eeprom_addr = sizeof(board_id); + + while (true) { + rc = dm_i2c_read(dev, eeprom_addr, (uint8_t *)&record.header, + sizeof(record.header)); + if (rc) + return rc; + + /* + * Check for end of list marker. If we reached it don't go + * any further and stop parsing right here. + */ + if (record.header.id == TI_AM6_EEPROM_RECORD_END_LIST) + break; + + eeprom_addr += sizeof(record.header); + + debug("%s: dev_addr=0x%02x header.id=%u header.len=%u\n", + __func__, dev_addr, record.header.id, + record.header.len); + + /* Read record into memory if it fits */ + if (record.header.len <= sizeof(record.data)) { + rc = dm_i2c_read(dev, eeprom_addr, + (uint8_t *)&record.data, + record.header.len); + if (rc) + return rc; + + /* Process record */ + rc = ti_i2c_eeprom_am6_parse_record(&record, ep, + mac_addr, + mac_addr_max_cnt, + mac_addr_cnt); + if (rc) { + pr_err("%s: EEPROM parsing error!\n", __func__); + return rc; + } + } else { + /* + * We may get here in case of larger records which + * are not yet understood. + */ + pr_err("%s: Ignoring record id %u\n", __func__, + record.header.id); + } + + eeprom_addr += record.header.len; + } + + return 0; +} + +int __maybe_unused ti_i2c_eeprom_am6_get_base(int bus_addr, int dev_addr) +{ + struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA; + int ret; + + /* + * Always execute EEPROM read by not allowing to bypass it during the + * first invocation of SPL which happens on the R5 core. + */ +#if !(defined(CONFIG_SPL_BUILD) && defined(CONFIG_CPU_V7R)) + if (ep->header == TI_EEPROM_HEADER_MAGIC) { + debug("%s: EEPROM has already been read\n", __func__); + return 0; + } +#endif + + ret = ti_i2c_eeprom_am6_get(bus_addr, dev_addr, ep, + (char **)ep->mac_addr, + AM6_EEPROM_HDR_NO_OF_MAC_ADDR, + &ep->mac_addr_cnt); + return ret; +} + +bool __maybe_unused board_ti_k3_is(char *name_tag) +{ + struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA; + + if (ep->header == TI_DEAD_EEPROM_MAGIC) + return false; + return !strncmp(ep->name, name_tag, AM6_EEPROM_HDR_NAME_LEN); +} + +bool __maybe_unused board_ti_is(char *name_tag) +{ + struct ti_common_eeprom *ep = TI_EEPROM_DATA; + + if (ep->header == TI_DEAD_EEPROM_MAGIC) + return false; + return !strncmp(ep->name, name_tag, TI_EEPROM_HDR_NAME_LEN); +} + +bool __maybe_unused board_ti_rev_is(char *rev_tag, int cmp_len) +{ + struct ti_common_eeprom *ep = TI_EEPROM_DATA; + int l; + + if (ep->header == TI_DEAD_EEPROM_MAGIC) + return false; + + l = cmp_len > TI_EEPROM_HDR_REV_LEN ? TI_EEPROM_HDR_REV_LEN : cmp_len; + return !strncmp(ep->version, rev_tag, l); +} + +char * __maybe_unused board_ti_get_rev(void) +{ + struct ti_common_eeprom *ep = TI_EEPROM_DATA; + + /* if ep->header == TI_DEAD_EEPROM_MAGIC, this is empty already */ + return ep->version; +} + +char * __maybe_unused board_ti_get_config(void) +{ + struct ti_common_eeprom *ep = TI_EEPROM_DATA; + + /* if ep->header == TI_DEAD_EEPROM_MAGIC, this is empty already */ + return ep->config; +} + +char * __maybe_unused board_ti_get_name(void) +{ + struct ti_common_eeprom *ep = TI_EEPROM_DATA; + + /* if ep->header == TI_DEAD_EEPROM_MAGIC, this is empty already */ + return ep->name; +} + +void __maybe_unused +board_ti_get_eth_mac_addr(int index, + u8 mac_addr[TI_EEPROM_HDR_ETH_ALEN]) +{ + struct ti_common_eeprom *ep = TI_EEPROM_DATA; + + if (ep->header == TI_DEAD_EEPROM_MAGIC) + goto fail; + + if (index < 0 || index >= TI_EEPROM_HDR_NO_OF_MAC_ADDR) + goto fail; + + memcpy(mac_addr, ep->mac_addr[index], TI_EEPROM_HDR_ETH_ALEN); + return; + +fail: + memset(mac_addr, 0, TI_EEPROM_HDR_ETH_ALEN); +} + +void __maybe_unused +board_ti_am6_get_eth_mac_addr(int index, + u8 mac_addr[TI_EEPROM_HDR_ETH_ALEN]) +{ + struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA; + + if (ep->header == TI_DEAD_EEPROM_MAGIC) + goto fail; + + if (index < 0 || index >= ep->mac_addr_cnt) + goto fail; + + memcpy(mac_addr, ep->mac_addr[index], TI_EEPROM_HDR_ETH_ALEN); + return; + +fail: + memset(mac_addr, 0, TI_EEPROM_HDR_ETH_ALEN); +} + +u64 __maybe_unused board_ti_get_emif1_size(void) +{ + struct ti_common_eeprom *ep = TI_EEPROM_DATA; + + if (ep->header != DRA7_EEPROM_HEADER_MAGIC) + return 0; + + return ep->emif1_size; +} + +u64 __maybe_unused board_ti_get_emif2_size(void) +{ + struct ti_common_eeprom *ep = TI_EEPROM_DATA; + + if (ep->header != DRA7_EEPROM_HEADER_MAGIC) + return 0; + + return ep->emif2_size; +} + +void __maybe_unused set_board_info_env(char *name) +{ + char *unknown = "unknown"; + struct ti_common_eeprom *ep = TI_EEPROM_DATA; + + if (name) + env_set("board_name", name); + else if (strlen(ep->name) != 0) + env_set("board_name", ep->name); + else + env_set("board_name", unknown); + + if (strlen(ep->version) != 0) + env_set("board_rev", ep->version); + else + env_set("board_rev", unknown); + + if (strlen(ep->serial) != 0) + env_set("board_serial", ep->serial); + else + env_set("board_serial", unknown); +} + +void __maybe_unused set_board_info_env_am6(char *name) +{ + char *unknown = "unknown"; + struct ti_am6_eeprom *ep = TI_AM6_EEPROM_DATA; + + if (name) + env_set("board_name", name); + else if (strlen(ep->name) != 0) + env_set("board_name", ep->name); + else + env_set("board_name", unknown); + + if (strlen(ep->version) != 0) + env_set("board_rev", ep->version); + else + env_set("board_rev", unknown); + + if (strlen(ep->software_revision) != 0) + env_set("board_software_revision", ep->software_revision); + else + env_set("board_software_revision", unknown); + + if (strlen(ep->serial) != 0) + env_set("board_serial", ep->serial); + else + env_set("board_serial", unknown); +} + +static u64 mac_to_u64(u8 mac[6]) +{ + int i; + u64 addr = 0; + + for (i = 0; i < 6; i++) { + addr <<= 8; + addr |= mac[i]; + } + + return addr; +} + +static void u64_to_mac(u64 addr, u8 mac[6]) +{ + mac[5] = addr; + mac[4] = addr >> 8; + mac[3] = addr >> 16; + mac[2] = addr >> 24; + mac[1] = addr >> 32; + mac[0] = addr >> 40; +} + +void board_ti_set_ethaddr(int index) +{ + uint8_t mac_addr[6]; + int i; + u64 mac1, mac2; + u8 mac_addr1[6], mac_addr2[6]; + int num_macs; + /* + * Export any Ethernet MAC addresses from EEPROM. + * The 2 MAC addresses in EEPROM define the address range. + */ + board_ti_get_eth_mac_addr(0, mac_addr1); + board_ti_get_eth_mac_addr(1, mac_addr2); + + if (is_valid_ethaddr(mac_addr1) && is_valid_ethaddr(mac_addr2)) { + mac1 = mac_to_u64(mac_addr1); + mac2 = mac_to_u64(mac_addr2); + + /* must contain an address range */ + num_macs = mac2 - mac1 + 1; + if (num_macs <= 0) + return; + + if (num_macs > 50) { + printf("%s: Too many MAC addresses: %d. Limiting to 50\n", + __func__, num_macs); + num_macs = 50; + } + + for (i = 0; i < num_macs; i++) { + u64_to_mac(mac1 + i, mac_addr); + if (is_valid_ethaddr(mac_addr)) { + eth_env_set_enetaddr_by_index("eth", i + index, + mac_addr); + } + } + } +} + +void board_ti_am6_set_ethaddr(int index, int count) +{ + u8 mac_addr[6]; + int i; + + for (i = 0; i < count; i++) { + board_ti_am6_get_eth_mac_addr(i, mac_addr); + if (is_valid_ethaddr(mac_addr)) + eth_env_set_enetaddr_by_index("eth", i + index, + mac_addr); + } +} + +bool __maybe_unused board_ti_was_eeprom_read(void) +{ + struct ti_common_eeprom *ep = TI_EEPROM_DATA; + + if (ep->header == TI_EEPROM_HEADER_MAGIC) + return true; + else + return false; +} diff --git a/roms/u-boot/board/ti/common/board_detect.h b/roms/u-boot/board/ti/common/board_detect.h new file mode 100644 index 000000000..de7cb52df --- /dev/null +++ b/roms/u-boot/board/ti/common/board_detect.h @@ -0,0 +1,471 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Library to support early TI EVM EEPROM handling + * + * Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com + */ + +#ifndef __BOARD_DETECT_H +#define __BOARD_DETECT_H + +/* TI EEPROM MAGIC Header identifier */ +#include <linux/bitops.h> +#define TI_EEPROM_HEADER_MAGIC 0xEE3355AA +#define TI_DEAD_EEPROM_MAGIC 0xADEAD12C + +#define TI_EEPROM_HDR_NAME_LEN 8 +#define TI_EEPROM_HDR_REV_LEN 4 +#define TI_EEPROM_HDR_SERIAL_LEN 12 +#define TI_EEPROM_HDR_CONFIG_LEN 32 +#define TI_EEPROM_HDR_NO_OF_MAC_ADDR 3 +#define TI_EEPROM_HDR_ETH_ALEN 6 + +/** + * struct ti_am_eeprom - This structure holds data read in from the + * AM335x, AM437x, AM57xx TI EVM EEPROMs. + * @header: This holds the magic number + * @name: The name of the board + * @version: Board revision + * @serial: Board serial number + * @config: Reserved + * @mac_addr: Any MAC addresses written in the EEPROM + * + * The data is this structure is read from the EEPROM on the board. + * It is used for board detection which is based on name. It is used + * to configure specific TI boards. This allows booting of multiple + * TI boards with a single MLO and u-boot. + */ +struct ti_am_eeprom { + unsigned int header; + char name[TI_EEPROM_HDR_NAME_LEN]; + char version[TI_EEPROM_HDR_REV_LEN]; + char serial[TI_EEPROM_HDR_SERIAL_LEN]; + char config[TI_EEPROM_HDR_CONFIG_LEN]; + char mac_addr[TI_EEPROM_HDR_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN]; +} __attribute__ ((__packed__)); + +/* AM6x TI EVM EEPROM Definitions */ +#define TI_AM6_EEPROM_RECORD_BOARD_ID 0x01 +#define TI_AM6_EEPROM_RECORD_BOARD_INFO 0x10 +#define TI_AM6_EEPROM_RECORD_DDR_INFO 0x11 +#define TI_AM6_EEPROM_RECORD_DDR_SPD 0x12 +#define TI_AM6_EEPROM_RECORD_MAC_INFO 0x13 +#define TI_AM6_EEPROM_RECORD_END_LIST 0xFE + +/* + * Common header for AM6x TI EVM EEPROM records. Used to encapsulate the config + * EEPROM in its entirety as well as for individual records contained within. + */ +struct ti_am6_eeprom_record_header { + u8 id; + u16 len; +} __attribute__ ((__packed__)); + +/* AM6x TI EVM EEPROM board ID structure */ +struct ti_am6_eeprom_record_board_id { + u32 magic_number; + struct ti_am6_eeprom_record_header header; +} __attribute__ ((__packed__)); + +/* AM6x TI EVM EEPROM board info structure */ +#define AM6_EEPROM_HDR_NAME_LEN 16 +#define AM6_EEPROM_HDR_VERSION_LEN 2 +#define AM6_EEPROM_HDR_PROC_NR_LEN 4 +#define AM6_EEPROM_HDR_VARIANT_LEN 2 +#define AM6_EEPROM_HDR_PCB_REV_LEN 2 +#define AM6_EEPROM_HDR_SCH_BOM_REV_LEN 2 +#define AM6_EEPROM_HDR_SW_REV_LEN 2 +#define AM6_EEPROM_HDR_VID_LEN 2 +#define AM6_EEPROM_HDR_BLD_WK_LEN 2 +#define AM6_EEPROM_HDR_BLD_YR_LEN 2 +#define AM6_EEPROM_HDR_4P_NR_LEN 6 +#define AM6_EEPROM_HDR_SERIAL_LEN 4 + +struct ti_am6_eeprom_record_board_info { + char name[AM6_EEPROM_HDR_NAME_LEN]; + char version[AM6_EEPROM_HDR_VERSION_LEN]; + char proc_number[AM6_EEPROM_HDR_PROC_NR_LEN]; + char variant[AM6_EEPROM_HDR_VARIANT_LEN]; + char pcb_revision[AM6_EEPROM_HDR_PCB_REV_LEN]; + char schematic_bom_revision[AM6_EEPROM_HDR_SCH_BOM_REV_LEN]; + char software_revision[AM6_EEPROM_HDR_SW_REV_LEN]; + char vendor_id[AM6_EEPROM_HDR_VID_LEN]; + char build_week[AM6_EEPROM_HDR_BLD_WK_LEN]; + char build_year[AM6_EEPROM_HDR_BLD_YR_LEN]; + char board_4p_number[AM6_EEPROM_HDR_4P_NR_LEN]; + char serial[AM6_EEPROM_HDR_SERIAL_LEN]; +} __attribute__ ((__packed__)); + +/* Memory location to keep a copy of the AM6 board info record */ +#define TI_AM6_EEPROM_BD_INFO_DATA ((struct ti_am6_eeprom_record_board_info *) \ + TI_SRAM_SCRATCH_BOARD_EEPROM_START) + +/* AM6x TI EVM EEPROM DDR info structure */ +#define TI_AM6_EEPROM_DDR_CTRL_INSTANCE_MASK GENMASK(1, 0) +#define TI_AM6_EEPROM_DDR_CTRL_INSTANCE_SHIFT 0 +#define TI_AM6_EEPROM_DDR_CTRL_SPD_DATA_LOC_MASK GENMASK(3, 2) +#define TI_AM6_EEPROM_DDR_CTRL_SPD_DATA_LOC_NA (0 << 2) +#define TI_AM6_EEPROM_DDR_CTRL_SPD_DATA_LOC_BOARDID (2 << 2) +#define TI_AM6_EEPROM_DDR_CTRL_SPD_DATA_LOC_I2C51 (3 << 2) +#define TI_AM6_EEPROM_DDR_CTRL_MEM_TYPE_MASK GENMASK(5, 4) +#define TI_AM6_EEPROM_DDR_CTRL_MEM_TYPE_DDR3 (0 << 4) +#define TI_AM6_EEPROM_DDR_CTRL_MEM_TYPE_DDR4 (1 << 4) +#define TI_AM6_EEPROM_DDR_CTRL_MEM_TYPE_LPDDR4 (2 << 4) +#define TI_AM6_EEPROM_DDR_CTRL_IF_DATA_WIDTH_MASK GENMASK(7, 6) +#define TI_AM6_EEPROM_DDR_CTRL_IF_DATA_WIDTH_16 (0 << 6) +#define TI_AM6_EEPROM_DDR_CTRL_IF_DATA_WIDTH_32 (1 << 6) +#define TI_AM6_EEPROM_DDR_CTRL_IF_DATA_WIDTH_64 (2 << 6) +#define TI_AM6_EEPROM_DDR_CTRL_DEV_DATA_WIDTH_MASK GENMASK(9, 8) +#define TI_AM6_EEPROM_DDR_CTRL_DEV_DATA_WIDTH_8 (0 << 8) +#define TI_AM6_EEPROM_DDR_CTRL_DEV_DATA_WIDTH_16 (1 << 8) +#define TI_AM6_EEPROM_DDR_CTRL_DEV_DATA_WIDTH_32 (2 << 8) +#define TI_AM6_EEPROM_DDR_CTRL_RANKS_2 BIT(10) +#define TI_AM6_EEPROM_DDR_CTRL_DENS_MASK GENMASK(13, 11) +#define TI_AM6_EEPROM_DDR_CTRL_DENS_1GB (0 << 11) +#define TI_AM6_EEPROM_DDR_CTRL_DENS_2GB (1 << 11) +#define TI_AM6_EEPROM_DDR_CTRL_DENS_4GB (2 << 11) +#define TI_AM6_EEPROM_DDR_CTRL_DENS_8GB (3 << 11) +#define TI_AM6_EEPROM_DDR_CTRL_DENS_12GB (4 << 11) +#define TI_AM6_EEPROM_DDR_CTRL_DENS_16GB (5 << 11) +#define TI_AM6_EEPROM_DDR_CTRL_DENS_24GB (6 << 11) +#define TI_AM6_EEPROM_DDR_CTRL_DENS_32GB (7 << 11) +#define TI_AM6_EEPROM_DDR_CTRL_ECC BIT(14) + +struct ti_am6_eeprom_record_ddr_info { + u16 ddr_control; +} __attribute__ ((__packed__)); + +/* AM6x TI EVM EEPROM DDR SPD structure */ +#define TI_AM6_EEPROM_DDR_SPD_INSTANCE_MASK GENMASK(1, 0) +#define TI_AM6_EEPROM_DDR_SPD_INSTANCE_SHIFT 0 +#define TI_AM6_EEPROM_DDR_SPD_MEM_TYPE_MASK GENMASK(4, 3) +#define TI_AM6_EEPROM_DDR_SPD_MEM_TYPE_DDR3 (0 << 3) +#define TI_AM6_EEPROM_DDR_SPD_MEM_TYPE_DDR4 (1 << 3) +#define TI_AM6_EEPROM_DDR_SPD_MEM_TYPE_LPDDR4 (2 << 3) +#define TI_AM6_EEPROM_DDR_SPD_DATA_LEN 512 + +struct ti_am6_eeprom_record_ddr_spd { + u16 spd_control; + u8 data[TI_AM6_EEPROM_DDR_SPD_DATA_LEN]; +} __attribute__ ((__packed__)); + +/* AM6x TI EVM EEPROM MAC info structure */ +#define TI_AM6_EEPROM_MAC_INFO_INSTANCE_MASK GENMASK(2, 0) +#define TI_AM6_EEPROM_MAC_INFO_INSTANCE_SHIFT 0 +#define TI_AM6_EEPROM_MAC_ADDR_COUNT_MASK GENMASK(7, 3) +#define TI_AM6_EEPROM_MAC_ADDR_COUNT_SHIFT 3 +#define TI_AM6_EEPROM_MAC_ADDR_MAX_COUNT 32 + +struct ti_am6_eeprom_record_mac_info { + u16 mac_control; + u8 mac_addr[TI_AM6_EEPROM_MAC_ADDR_MAX_COUNT][TI_EEPROM_HDR_ETH_ALEN]; +} __attribute__ ((__packed__)); + +struct ti_am6_eeprom_record { + struct ti_am6_eeprom_record_header header; + union { + struct ti_am6_eeprom_record_board_info board_info; + struct ti_am6_eeprom_record_ddr_info ddr_info; + struct ti_am6_eeprom_record_ddr_spd ddr_spd; + struct ti_am6_eeprom_record_mac_info mac_info; + } data; +} __attribute__ ((__packed__)); + +/* DRA7 EEPROM MAGIC Header identifier */ +#define DRA7_EEPROM_HEADER_MAGIC 0xAA5533EE +#define DRA7_EEPROM_HDR_NAME_LEN 16 +#define DRA7_EEPROM_HDR_CONFIG_LEN 4 + +/** + * struct dra7_eeprom - This structure holds data read in from the DRA7 EVM + * EEPROMs. + * @header: This holds the magic number + * @name: The name of the board + * @version_major: Board major version + * @version_minor: Board minor version + * @config: Board specific config options + * @emif1_size: Size of DDR attached to EMIF1 + * @emif2_size: Size of DDR attached to EMIF2 + * + * The data is this structure is read from the EEPROM on the board. + * It is used for board detection which is based on name. It is used + * to configure specific DRA7 boards. This allows booting of multiple + * DRA7 boards with a single MLO and u-boot. + */ +struct dra7_eeprom { + u32 header; + char name[DRA7_EEPROM_HDR_NAME_LEN]; + u16 version_major; + u16 version_minor; + char config[DRA7_EEPROM_HDR_CONFIG_LEN]; + u32 emif1_size; + u32 emif2_size; +} __attribute__ ((__packed__)); + +/** + * struct ti_common_eeprom - Null terminated, usable EEPROM contents. + * header: Magic number + * @name: NULL terminated name + * @version: NULL terminated version + * @serial: NULL terminated serial number + * @config: NULL terminated Board specific config options + * @mac_addr: MAC addresses + * @emif1_size: Size of the ddr available on emif1 + * @emif2_size: Size of the ddr available on emif2 + */ +struct ti_common_eeprom { + u32 header; + char name[TI_EEPROM_HDR_NAME_LEN + 1]; + char version[TI_EEPROM_HDR_REV_LEN + 1]; + char serial[TI_EEPROM_HDR_SERIAL_LEN + 1]; + char config[TI_EEPROM_HDR_CONFIG_LEN + 1]; + char mac_addr[TI_EEPROM_HDR_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN]; + u64 emif1_size; + u64 emif2_size; +}; + +#define TI_EEPROM_DATA ((struct ti_common_eeprom *)\ + TI_SRAM_SCRATCH_BOARD_EEPROM_START) + +/* + * Maximum number of Ethernet MAC addresses extracted from the AM6x on-board + * EEPROM during the initial probe and carried forward in SRAM. + */ +#define AM6_EEPROM_HDR_NO_OF_MAC_ADDR 8 + +/** + * struct ti_am6_eeprom - Null terminated, usable EEPROM contents, as extracted + * from the AM6 on-board EEPROM. Note that we only carry a subset of data + * at this time to be considerate about memory consumption. + * @header: Magic number for data validity indication + * @name: NULL terminated name + * @version: NULL terminated version + * @software_revision: NULL terminated software revision + * @serial: Board serial number + * @mac_addr_cnt: Number of MAC addresses stored in this object + * @mac_addr: MAC addresses + */ +struct ti_am6_eeprom { + u32 header; + char name[AM6_EEPROM_HDR_NAME_LEN + 1]; + char version[AM6_EEPROM_HDR_VERSION_LEN + 1]; + char software_revision[AM6_EEPROM_HDR_SW_REV_LEN + 1]; + char serial[AM6_EEPROM_HDR_SERIAL_LEN + 1]; + u8 mac_addr_cnt; + char mac_addr[AM6_EEPROM_HDR_NO_OF_MAC_ADDR][TI_EEPROM_HDR_ETH_ALEN]; +}; + +#define TI_AM6_EEPROM_DATA ((struct ti_am6_eeprom *) \ + TI_SRAM_SCRATCH_BOARD_EEPROM_START) + +/** + * ti_i2c_eeprom_am_get() - Consolidated eeprom data collection for AM* TI EVMs + * @bus_addr: I2C bus address + * @dev_addr: I2C slave address + * + * ep in SRAM is populated by the this AM generic function that consolidates + * the basic initialization logic common across all AM* platforms. + */ +int ti_i2c_eeprom_am_get(int bus_addr, int dev_addr); + +/** + * ti_emmc_boardid_get() - Fetch board ID information from eMMC + * + * ep in SRAM is populated by the this function that is currently + * based on BeagleBone AI, but could be made more general across AM* + * platforms. + */ +int __maybe_unused ti_emmc_boardid_get(void); + +/** + * ti_i2c_eeprom_dra7_get() - Consolidated eeprom data for DRA7 TI EVMs + * @bus_addr: I2C bus address + * @dev_addr: I2C slave address + */ +int ti_i2c_eeprom_dra7_get(int bus_addr, int dev_addr); + +/** + * ti_i2c_eeprom_am6_get() - Consolidated eeprom data for AM6x TI EVMs and + * associated daughter cards, parsed into user- + * provided data structures + * @bus_addr: I2C bus address + * @dev_addr: I2C slave address + * @ep: Pointer to structure receiving AM6-specific header data + * @mac_addr: Pointer to memory receiving parsed MAC addresses. May be + * NULL to skip MAC parsing. + * @mac_addr_max_cnt: Maximum number of MAC addresses that can be stored into + * mac_addr. May be NULL to skip MAC parsing. + * @mac_addr_cnt: Pointer to a location returning how many MAC addressed got + * actually parsed. + */ +int __maybe_unused ti_i2c_eeprom_am6_get(int bus_addr, int dev_addr, + struct ti_am6_eeprom *ep, + char **mac_addr, + u8 mac_addr_max_cnt, + u8 *mac_addr_cnt); + +/** + * ti_i2c_eeprom_am6_get_base() - Consolidated eeprom data for AM6x TI EVMs + * @bus_addr: I2C bus address + * @dev_addr: I2C slave address + */ +int __maybe_unused ti_i2c_eeprom_am6_get_base(int bus_addr, int dev_addr); + +#ifdef CONFIG_TI_I2C_BOARD_DETECT +/** + * board_ti_is() - Board detection logic for TI EVMs + * @name_tag: Tag used in eeprom for the board + * + * Return: false if board information does not match OR eeprom wasn't read. + * true otherwise + */ +bool board_ti_is(char *name_tag); + +/** + * board_ti_k3_is() - Board detection logic for TI K3 EVMs + * @name_tag: Tag used in eeprom for the board + * + * Return: false if board information does not match OR eeprom wasn't read. + * true otherwise + */ +bool board_ti_k3_is(char *name_tag); + +/** + * board_ti_rev_is() - Compare board revision for TI EVMs + * @rev_tag: Revision tag to check in eeprom + * @cmp_len: How many chars to compare? + * + * NOTE: revision information is often messed up (hence the str len match) :( + * + * Return: false if board information does not match OR eeprom wasn't read. + * true otherwise + */ +bool board_ti_rev_is(char *rev_tag, int cmp_len); + +/** + * board_ti_get_rev() - Get board revision for TI EVMs + * + * Return: Empty string if eeprom wasn't read. + * Board revision otherwise + */ +char *board_ti_get_rev(void); + +/** + * board_ti_get_config() - Get board config for TI EVMs + * + * Return: Empty string if eeprom wasn't read. + * Board config otherwise + */ +char *board_ti_get_config(void); + +/** + * board_ti_get_name() - Get board name for TI EVMs + * + * Return: Empty string if eeprom wasn't read. + * Board name otherwise + */ +char *board_ti_get_name(void); + +/** + * board_ti_get_eth_mac_addr() - Get Ethernet MAC address from EEPROM MAC list + * @index: 0 based index within the list of MAC addresses + * @mac_addr: MAC address contained at the index is returned here + * + * Does not sanity check the mac_addr. Whatever is stored in EEPROM is returned. + */ +void board_ti_get_eth_mac_addr(int index, u8 mac_addr[TI_EEPROM_HDR_ETH_ALEN]); + +/** + * board_ti_get_emif1_size() - Get size of the DDR on emif1 for TI EVMs + * + * Return: NULL if eeprom wasn't read or emif1_size is not available. + */ +u64 board_ti_get_emif1_size(void); + +/** + * board_ti_get_emif2_size() - Get size of the DDR on emif2 for TI EVMs + * + * Return: NULL if eeprom wasn't read or emif2_size is not available. + */ +u64 board_ti_get_emif2_size(void); + +/** + * set_board_info_env() - Setup commonly used board information environment vars + * @name: Name of the board + * + * If name is NULL, default_name is used. + */ +void set_board_info_env(char *name); + +/** + * 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); + +/** + * board_ti_set_ethaddr- Sets the ethaddr environment from EEPROM + * @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); +#else +static inline bool board_ti_is(char *name_tag) { return false; }; +static inline bool board_ti_k3_is(char *name_tag) { return false; }; +static inline bool board_ti_rev_is(char *rev_tag, int cmp_len) +{ return false; }; +static inline char *board_ti_get_rev(void) { return NULL; }; +static inline char *board_ti_get_config(void) { return NULL; }; +static inline char *board_ti_get_name(void) { return NULL; }; +static inline bool board_ti_was_eeprom_read(void) { return false; }; +static inline int ti_i2c_eeprom_am_set(const char *name, const char *rev) +{ return -EINVAL; }; +#endif + +#endif /* __BOARD_DETECT_H */ diff --git a/roms/u-boot/board/ti/common/cape_detect.c b/roms/u-boot/board/ti/common/cape_detect.c new file mode 100644 index 000000000..2e6105cfb --- /dev/null +++ b/roms/u-boot/board/ti/common/cape_detect.c @@ -0,0 +1,96 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2021 + * Köry Maincent, Bootlin, <kory.maincent@bootlin.com> + */ + +#include <common.h> +#include <malloc.h> +#include <i2c.h> +#include <extension_board.h> + +#include "cape_detect.h" + +static void sanitize_field(char *text, size_t size) +{ + char *c = NULL; + + for (c = text; c < text + (int)size; c++) { + if (*c == 0xFF) + *c = 0; + } +} + +int extension_board_scan(struct list_head *extension_list) +{ + struct extension *cape; + struct am335x_cape_eeprom_id eeprom_header; + + int num_capes = 0; + int ret, i; + struct udevice *dev; + unsigned char addr; + + char process_cape_part_number[17] = {'0'}; + char process_cape_version[5] = {'0'}; + uint8_t cursor = 0; + + for (addr = CAPE_EEPROM_FIRST_ADDR; addr <= CAPE_EEPROM_LAST_ADDR; addr++) { + ret = i2c_get_chip_for_busnum(CONFIG_CAPE_EEPROM_BUS_NUM, addr, 1, &dev); + if (ret) + continue; + + /* Move the read cursor to the beginning of the EEPROM */ + dm_i2c_write(dev, 0, &cursor, 1); + ret = dm_i2c_read(dev, 0, (uint8_t *)&eeprom_header, + sizeof(struct am335x_cape_eeprom_id)); + if (ret) { + printf("Cannot read i2c EEPROM\n"); + continue; + } + + if (eeprom_header.header != CAPE_MAGIC) + continue; + + sanitize_field(eeprom_header.board_name, sizeof(eeprom_header.board_name)); + sanitize_field(eeprom_header.version, sizeof(eeprom_header.version)); + sanitize_field(eeprom_header.manufacturer, sizeof(eeprom_header.manufacturer)); + sanitize_field(eeprom_header.part_number, sizeof(eeprom_header.part_number)); + + /* Process cape part_number */ + memset(process_cape_part_number, 0, sizeof(process_cape_part_number)); + strncpy(process_cape_part_number, eeprom_header.part_number, 16); + /* Some capes end with '.' */ + for (i = 15; i >= 0; i--) { + if (process_cape_part_number[i] == '.') + process_cape_part_number[i] = '\0'; + else + break; + } + + /* Process cape version */ + memset(process_cape_version, 0, sizeof(process_cape_version)); + strncpy(process_cape_version, eeprom_header.version, 4); + for (i = 0; i < 4; i++) { + if (process_cape_version[i] == 0) + process_cape_version[i] = '0'; + } + + printf("BeagleBone Cape: %s (0x%x)\n", eeprom_header.board_name, addr); + + cape = calloc(1, sizeof(struct extension)); + if (!cape) { + printf("Error in memory allocation\n"); + return num_capes; + } + + snprintf(cape->overlay, sizeof(cape->overlay), "%s-%s.dtbo", + process_cape_part_number, process_cape_version); + strncpy(cape->name, eeprom_header.board_name, 32); + strncpy(cape->version, process_cape_version, 4); + strncpy(cape->owner, eeprom_header.manufacturer, 16); + list_add_tail(&cape->list, extension_list); + num_capes++; + } + return num_capes; +} diff --git a/roms/u-boot/board/ti/common/cape_detect.h b/roms/u-boot/board/ti/common/cape_detect.h new file mode 100644 index 000000000..b0d5c9f18 --- /dev/null +++ b/roms/u-boot/board/ti/common/cape_detect.h @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * (C) Copyright 2021 + * Köry Maincent, Bootlin, <kory.maincent@bootlin.com> + */ + +#ifndef __CAPE_DETECT_H +#define __CAPE_DETECT_H + +struct am335x_cape_eeprom_id { + unsigned int header; + char eeprom_rev[2]; + char board_name[32]; + char version[4]; + char manufacturer[16]; + char part_number[16]; +}; + +#define CAPE_EEPROM_FIRST_ADDR 0x54 +#define CAPE_EEPROM_LAST_ADDR 0x57 + +#define CAPE_EEPROM_ADDR_LEN 0x10 + +#define CAPE_MAGIC 0xEE3355AA + +int extension_board_scan(struct list_head *extension_list); + +#endif /* __CAPE_DETECT_H */ |