diff options
Diffstat (limited to 'board/compulab/common/eeprom.c')
| -rw-r--r-- | board/compulab/common/eeprom.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/board/compulab/common/eeprom.c b/board/compulab/common/eeprom.c index 2df3ada..a45e7be 100644 --- a/board/compulab/common/eeprom.c +++ b/board/compulab/common/eeprom.c @@ -109,23 +109,27 @@ int cl_eeprom_read_mac_addr(uchar *buf) return cl_eeprom_read(offset, buf, 6); } +static u32 board_rev; + /* * Routine: cl_eeprom_get_board_rev * Description: read system revision from eeprom */ u32 cl_eeprom_get_board_rev(void) { - u32 rev = 0; char str[5]; /* Legacy representation can contain at most 4 digits */ uint offset = BOARD_REV_OFFSET_LEGACY; + if (board_rev) + return board_rev; + if (cl_eeprom_setup_layout()) return 0; if (cl_eeprom_layout != LAYOUT_LEGACY) offset = BOARD_REV_OFFSET; - if (cl_eeprom_read(offset, (uchar *)&rev, BOARD_REV_SIZE)) + if (cl_eeprom_read(offset, (uchar *)&board_rev, BOARD_REV_SIZE)) return 0; /* @@ -133,9 +137,9 @@ u32 cl_eeprom_get_board_rev(void) * representation. i.e. for rev 1.00: 0x100 --> 0x64 */ if (cl_eeprom_layout == LAYOUT_LEGACY) { - sprintf(str, "%x", rev); - rev = simple_strtoul(str, NULL, 10); + sprintf(str, "%x", board_rev); + board_rev = simple_strtoul(str, NULL, 10); } - return rev; + return board_rev; }; |