+// 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 <asm/omap_common.h>
+#include <dm/uclass.h>
#include <i2c.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
+
/**
* ti_i2c_eeprom_init - Initialize an i2c bus and probe for a device
* @i2c_bus: i2c bus number to initialize
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);
+ int bus_num, rc, alen;
+
+ bus_num = i2c_get_bus_num();
+
+ alen = 2;
+
+ rc = ti_i2c_set_alen(bus_num, dev_addr, alen);
+ if (rc)
+ return rc;
+
+ return i2c_read(dev_addr, offset, alen, ep, epsize);
}
/**
* Read the header first then only read the other contents.
*/
byte = 2;
+
+ rc = ti_i2c_set_alen(bus_addr, dev_addr, byte);
+ if (rc)
+ return rc;
+
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 = ti_i2c_set_alen(bus_addr, dev_addr, byte);
+ if (rc)
+ return rc;
+
rc = i2c_read(dev_addr, 0x0, byte, (uint8_t *)&hdr_read,
4);
+ }
if (rc)
return rc;
}
return 0;
}
+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_common_eeprom *ep;
ep = TI_EEPROM_DATA;
+#ifndef CONFIG_SPL_BUILD
if (ep->header == TI_EEPROM_HEADER_MAGIC)
- goto already_read;
+ 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);
memcpy(ep->mac_addr, am_ep.mac_addr,
TI_EEPROM_HDR_NO_OF_MAC_ADDR * TI_EEPROM_HDR_ETH_ALEN);
-already_read:
+ 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;
}
{
struct ti_common_eeprom *ep = TI_EEPROM_DATA;
- if (ep->header == TI_DEAD_EEPROM_MAGIC)
- return NULL;
-
+ /* if ep->header == TI_DEAD_EEPROM_MAGIC, this is empty already */
return ep->version;
}
{
struct ti_common_eeprom *ep = TI_EEPROM_DATA;
- if (ep->header == TI_DEAD_EEPROM_MAGIC)
- return NULL;
-
+ /* if ep->header == TI_DEAD_EEPROM_MAGIC, this is empty already */
return ep->config;
}
{
struct ti_common_eeprom *ep = TI_EEPROM_DATA;
- if (ep->header == TI_DEAD_EEPROM_MAGIC)
- return NULL;
-
+ /* if ep->header == TI_DEAD_EEPROM_MAGIC, this is empty already */
return ep->name;
}
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)
- setenv("board_name", name);
+ env_set("board_name", name);
else if (ep->name)
- setenv("board_name", ep->name);
+ env_set("board_name", ep->name);
else
- setenv("board_name", unknown);
+ env_set("board_name", unknown);
if (ep->version)
- setenv("board_rev", ep->version);
+ env_set("board_rev", ep->version);
else
- setenv("board_rev", unknown);
+ env_set("board_rev", unknown);
if (ep->serial)
- setenv("board_serial", ep->serial);
+ env_set("board_serial", ep->serial);
else
- setenv("board_serial", unknown);
+ 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);
+ }
+ }
+ }
+}
+
+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