xilinx: board: Update logic in xilinx_read_eeprom_legacy
When eeprom has random content printing random chars can stuck U-Boot.
That's why update legacy eeprom format decoding algorithm to copy only
maximum amount of chars allocated for fields.
And also print them directly from desc structure.
Previous algorithm was printing strings first directly from eeprom content
and then copy them to desc structure.
Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/42065fcbb1a10581f9f4f091d64b43c01fe595c6.1674573561.git.michal.simek@amd.com
diff --git a/board/xilinx/common/board.c b/board/xilinx/common/board.c
index ed393f7..fbc76ee 100644
--- a/board/xilinx/common/board.c
+++ b/board/xilinx/common/board.c
@@ -141,22 +141,26 @@
xilinx_eeprom_legacy_cleanup((char *)eeprom_content, size);
- printf("Xilinx I2C Legacy format at %s:\n", name);
- printf(" Board name:\t%s\n", eeprom_content->board_name);
- printf(" Board rev:\t%s\n", eeprom_content->board_revision);
- printf(" Board SN:\t%s\n", eeprom_content->board_sn);
+ /* Terminating \0 chars are the part of desc fields already */
+ strlcpy(desc->name, eeprom_content->board_name,
+ sizeof(eeprom_content->board_name) + 1);
+ strlcpy(desc->revision, eeprom_content->board_revision,
+ sizeof(eeprom_content->board_revision) + 1);
+ strlcpy(desc->serial, eeprom_content->board_sn,
+ sizeof(eeprom_content->board_sn) + 1);
eth_valid = is_valid_ethaddr((const u8 *)eeprom_content->eth_mac);
if (eth_valid)
- printf(" Ethernet mac:\t%pM\n", eeprom_content->eth_mac);
-
- /* Terminating \0 chars ensure end of string */
- strcpy(desc->name, eeprom_content->board_name);
- strcpy(desc->revision, eeprom_content->board_revision);
- strcpy(desc->serial, eeprom_content->board_sn);
- if (eth_valid)
memcpy(desc->mac_addr[0], eeprom_content->eth_mac, ETH_ALEN);
+ printf("Xilinx I2C Legacy format at %s:\n", name);
+ printf(" Board name:\t%s\n", desc->name);
+ printf(" Board rev:\t%s\n", desc->revision);
+ printf(" Board SN:\t%s\n", desc->serial);
+
+ if (eth_valid)
+ printf(" Ethernet mac:\t%pM\n", desc->mac_addr);
+
desc->header = EEPROM_HEADER_MAGIC;
free(eeprom_content);