From: Nikita Kiryanov <[email protected]> Read revision from EEPROM and pass it to Linux.
Signed-off-by: Nikita Kiryanov <[email protected]> Signed-off-by: Igor Grinberg <[email protected]> --- board/cm_t35/eeprom.c | 28 ++++++++++++++++++++++++++++ 1 files changed, 28 insertions(+), 0 deletions(-) diff --git a/board/cm_t35/eeprom.c b/board/cm_t35/eeprom.c index 3bd7751..8386d18 100644 --- a/board/cm_t35/eeprom.c +++ b/board/cm_t35/eeprom.c @@ -27,6 +27,10 @@ #define EEPROM_LAYOUT_VER_OFFSET 44 #define BOARD_SERIAL_OFFSET 20 #define BOARD_SERIAL_OFFSET_LEGACY 8 +#define BOARD_REV_OFFSET 0 +#define BOARD_REV_OFFSET_LEGACY 6 +#define BOARD_REV_SIZE 4 +#define BOARD_REV_SIZE_LEGACY 2 #define LAYOUT_INVALID 0 #define LAYOUT_LEGACY 0xff @@ -77,3 +81,27 @@ void get_board_serial(struct tag_serialnr *serialnr) serialnr->high = serial[1]; } } + +/* + * Routine: get_board_rev + * Description: read system revision + */ +u32 get_board_rev(void) +{ + u32 rev = 0; + uint offset = BOARD_REV_OFFSET_LEGACY; + int len = BOARD_REV_SIZE_LEGACY; + + if (eeprom_setup_layout()) + return 0; + + if (eeprom_layout != LAYOUT_LEGACY) { + offset = BOARD_REV_OFFSET; + len = BOARD_REV_SIZE; + } + + if (cm_t3x_eeprom_read(offset, (uchar *)&rev, len)) + return 0; + + return rev; +}; -- 1.7.3.4 _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
