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cm-t35: pass correct revision information to Linux

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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>
This commit is contained in:
Nikita Kiryanov 2012-01-02 04:01:34 +00:00 • committed by Albert ARIBAUD
parent 715462dd7e
commit 7d3c97d71f
1 changed files with 28 additions and 0 deletions
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28
board/cm_t35/eeprom.c
View file

@ -25,6 +25,10 @@
#define EEPROM_LAYOUT_VER_OFFSET 44 #define EEPROM_LAYOUT_VER_OFFSET 44
#define BOARD_SERIAL_OFFSET 20 #define BOARD_SERIAL_OFFSET 20
#define BOARD_SERIAL_OFFSET_LEGACY 8 #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_INVALID 0
#define LAYOUT_LEGACY 0xff #define LAYOUT_LEGACY 0xff
@ -76,3 +80,27 @@ void get_board_serial(struct tag_serialnr *serialnr)
serialnr->high = serial[1]; 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;
};