ti: common: dra7: Add standard access for board description EEPROM

DRA7 EVM revH and later EVMs have EEPROM populated that can contain board
description information such as name, revision, DDR definition, etc. Adding
support for this EEPROM format.

Acked-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

1 files changed, 64 insertions, 0 deletions

diff --git a/board/ti/common/board_detect.c b/board/ti/common/board_detect.c
index 6cf4859967..e0ae1a51a6 100644
--- a/board/ti/common/board_detect.c
+++ b/board/ti/common/board_detect.c
@@ -160,6 +160,50 @@ 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;
+	if (ep->header == DRA7_EEPROM_HEADER_MAGIC)
+		goto already_read;
+
+	/* Initialize with a known bad marker for i2c fails.. */
+	ep->header = 0xADEAD12C;
+	ep->name[0] = 0x0;
+	ep->version[0] = 0x0;
+	ep->serial[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);
+
+already_read:
+	return 0;
+}
+
 bool __maybe_unused board_ti_is(char *name_tag)
 {
 	struct ti_common_eeprom *ep = TI_EEPROM_DATA;
@@ -230,6 +274,26 @@ 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";