+// 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
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
#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 defined(CONFIG_DM_I2C_COMPAT)
-/**
- * ti_i2c_set_alen - Set chip's i2c address length
- * @bus_addr - I2C bus number
- * @dev_addr - I2C eeprom id
- * @alen - I2C address length in bytes
- *
- * DM_I2C by default sets the address length to be used to 1. This
- * function allows this address length to be changed to match the
- * eeprom used for board detection.
- */
-int __maybe_unused ti_i2c_set_alen(int bus_addr, int dev_addr, int alen)
-{
- struct udevice *dev;
- struct udevice *bus;
- int rc;
-
- 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;
- rc = i2c_set_chip_offset_len(dev, alen);
- if (rc)
- return rc;
-
- return 0;
-}
-#else
-int __maybe_unused ti_i2c_set_alen(int bus_addr, int dev_addr, int alen)
-{
- return 0;
-}
-#endif
-
+#if !defined(CONFIG_DM_I2C)
/**
* ti_i2c_eeprom_init - Initialize an i2c bus and probe for a device
* @i2c_bus: i2c bus number to initialize
{
return i2c_read(dev_addr, offset, 2, ep, epsize);
}
+#endif
/**
* ti_eeprom_string_cleanup() - Handle eeprom programming errors
static int __maybe_unused ti_i2c_eeprom_get(int bus_addr, int dev_addr,
u32 header, u32 size, uint8_t *ep)
{
- u32 byte, hdr_read;
+ u32 hdr_read;
int rc;
+#if defined(CONFIG_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) {
+ rc = dm_i2c_read(dev, 0, (uint8_t *)&hdr_read, 4);
+ /*
+ * read the eeprom header using i2c again, but use only a
+ * 1 byte address (some legacy boards need this..)
+ */
+ if (rc) {
+ 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)
* 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;
* 1 byte address (some legacy boards need this..)
*/
byte = 1;
- if (rc)
+ if (rc) {
rc = i2c_read(dev_addr, 0x0, byte, (uint8_t *)&hdr_read,
4);
+ }
if (rc)
return rc;
}
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;
}
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;
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;
struct ti_common_eeprom *ep = TI_EEPROM_DATA;
if (name)
- setenv("board_name", name);
- else if (ep->name)
- setenv("board_name", ep->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
- setenv("board_name", unknown);
+ env_set("board_rev", unknown);
- if (ep->version)
- setenv("board_rev", ep->version);
+ if (strlen(ep->software_revision) != 0)
+ env_set("board_software_revision", ep->software_revision);
else
- setenv("board_rev", unknown);
+ env_set("board_software_revision", unknown);
- if (ep->serial)
- setenv("board_serial", ep->serial);
+ if (strlen(ep->serial) != 0)
+ env_set("board_serial", ep->serial);
else
- setenv("board_serial", unknown);
+ env_set("board_serial", unknown);
}
static u64 mac_to_u64(u8 mac[6])
for (i = 0; i < num_macs; i++) {
u64_to_mac(mac1 + i, mac_addr);
if (is_valid_ethaddr(mac_addr)) {
- eth_setenv_enetaddr_by_index("eth", i + index,
- 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;
+}
projects / platform / kernel / u-boot.git / blobdiff