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| author | Nikita Kiryanov <nikita@compulab.co.il> | 2012-01-02 04:01:34 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-01-16 08:40:11 +0100 |
| commit | 7d3c97d71ffe3d0cf8df00228ba18c79746fdf50 (patch) | |
| tree | 0337ecc97fec4d8861dae9be31ad3dc6cb39f6a9 /board | |
| parent | 715462dd7ec56f2410a98a4cd8fe8203132871dd (diff) | |
| download | u-boot-imx-7d3c97d71ffe3d0cf8df00228ba18c79746fdf50.zip u-boot-imx-7d3c97d71ffe3d0cf8df00228ba18c79746fdf50.tar.gz u-boot-imx-7d3c97d71ffe3d0cf8df00228ba18c79746fdf50.tar.bz2 | |
cm-t35: pass correct revision information to Linux
Read revision from EEPROM and pass it to Linux.
Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Diffstat (limited to 'board')
| -rw-r--r-- | 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 93ed6cb..b3d332f 100644 --- a/board/cm_t35/eeprom.c +++ b/board/cm_t35/eeprom.c @@ -25,6 +25,10 @@ #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 @@ -76,3 +80,27 @@ 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; +}; |