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cm-t35: print PCB revision information

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Buffer the PCB revision to avoid multiple eeprom accesses
for the same data and print it as a part of board information.

Signed-off-by: Nikita Kiryanov <nikita@compulab.co.il>
Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Tom Rini <trini@ti.com>
This commit is contained in:
Nikita Kiryanov 2012-05-24 04:01:24 +00:00 committed by Albert ARIBAUD
parent 2ef6302f87
commit 8c318eb3a0
3 changed files with 41 additions and 3 deletions
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33
board/cm_t35/cm_t35.c
View File

@ -99,6 +99,39 @@ int board_init(void)
return 0;
}
static u32 cm_t3x_rev;
/*
* Routine: get_board_rev
* Description: read system revision
*/
u32 get_board_rev(void)
{
if (!cm_t3x_rev)
cm_t3x_rev = cm_t3x_eeprom_get_board_rev();
return cm_t3x_rev;
};
/*
* Routine: misc_init_r
* Description: display die ID
*/
int misc_init_r(void)
{
u32 board_rev = get_board_rev();
u32 rev_major = board_rev / 100;
u32 rev_minor = board_rev - (rev_major * 100);
if ((rev_minor / 10) * 10 == rev_minor)
rev_minor = rev_minor / 10;
printf("PCB: %u.%u\n", rev_major, rev_minor);
dieid_num_r();
return 0;
}
/*
* Routine: set_muxconf_regs
* Description: Setting up the configuration Mux registers specific to the

6
board/cm_t35/eeprom.c
View File

@ -99,10 +99,10 @@ int cm_t3x_eeprom_read_mac_addr(uchar *buf)
}
/*
* Routine: get_board_rev
* Description: read system revision
* Routine: cm_t3x_eeprom_get_board_rev
* Description: read system revision from eeprom
*/
u32 get_board_rev(void)
u32 cm_t3x_eeprom_get_board_rev(void)
{
u32 rev = 0;
char str[5]; /* Legacy representation can contain at most 4 digits */

5
board/cm_t35/eeprom.h
View File

@ -23,11 +23,16 @@
#ifdef CONFIG_DRIVER_OMAP34XX_I2C
int cm_t3x_eeprom_read_mac_addr(uchar *buf);
u32 cm_t3x_eeprom_get_board_rev(void);
#else
static inline int cm_t3x_eeprom_read_mac_addr(uchar *buf)
{
return 1;
}
static inline u32 cm_t3x_eeprom_get_board_rev(void)
{
return 0;
}
#endif
#endif