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OMAP3: TAM3517: add macros for reading eeprom

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Added macros to read SOM information from the I2C
EEPROM.

Signed-off-by: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Stefano Babic 2012-11-23 05:19:25 +00:00 • committed by Tom Rini
parent fe2d59a123
commit 31f5b651fa
3 changed files with 60 additions and 23 deletions
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10
board/technexion/twister/twister.c
View file

@ -98,9 +98,12 @@ int board_init(void)
return 0;
}
#ifndef CONFIG_SPL_BUILD
int misc_init_r(void)
{
char *eth_addr;
struct tam3517_module_info info;
int ret;
dieid_num_r();
@ -108,12 +111,13 @@ int misc_init_r(void)
if (eth_addr)
return 0;
#ifndef CONFIG_SPL_BUILD
TAM3517_READ_MAC_FROM_EEPROM;
#endif
TAM3517_READ_EEPROM(&info, ret);
if (!ret)
TAM3517_READ_MAC_FROM_EEPROM(&info);
return 0;
}
#endif
/*
* Routine: set_muxconf_regs

15
board/teejet/mt_ventoux/mt_ventoux.c
View file

@ -258,21 +258,26 @@ int board_init(void)
return 0;
}
#ifndef CONFIG_SPL_BUILD
int misc_init_r(void)
{
char *eth_addr;
struct tam3517_module_info info;
int ret;
TAM3517_READ_EEPROM(&info, ret);
dieid_num_r();
eth_addr = getenv("ethaddr");
if (eth_addr)
if (ret)
return 0;
eth_addr = getenv("ethaddr");
if (!eth_addr)
TAM3517_READ_MAC_FROM_EEPROM(&info);
#ifndef CONFIG_SPL_BUILD
TAM3517_READ_MAC_FROM_EEPROM;
#endif
TAM3517_PRINT_SOM_INFO(&info);
return 0;
}
#endif
/*
* Routine: set_muxconf_regs

58
include/configs/tam3517-common.h
View file

@ -357,7 +357,6 @@
* I2C EEPROM
*/
#if !(defined(__KERNEL_STRICT_NAMES) || defined(__ASSEMBLY__))
/*
* The I2C EEPROM on the TAM3517 contains
* mac address and production data
@ -383,24 +382,29 @@ struct tam3517_module_info {
unsigned char _rev[100];
};
#define TAM3517_READ_MAC_FROM_EEPROM \
do { \
struct tam3517_module_info info;\
char buf[80], ethname[20]; \
int i; \
#define TAM3517_READ_EEPROM(info, ret) \
do { \
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); \
if (eeprom_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, \
(void *)&info, sizeof(info))) \
break; \
(void *)info, sizeof(*info))) \
ret = 1; \
else \
ret = 0; \
} while (0)
#define TAM3517_READ_MAC_FROM_EEPROM(info) \
do { \
char buf[80], ethname[20]; \
int i; \
memset(buf, 0, sizeof(buf)); \
for (i = 0 ; i < ARRAY_SIZE(info.eth_addr); i++) { \
for (i = 0 ; i < ARRAY_SIZE((info)->eth_addr); i++) { \
sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X", \
info.eth_addr[i][5], \
info.eth_addr[i][4], \
info.eth_addr[i][3], \
info.eth_addr[i][2], \
info.eth_addr[i][1], \
info.eth_addr[i][0]); \
(info)->eth_addr[i][5], \
(info)->eth_addr[i][4], \
(info)->eth_addr[i][3], \
(info)->eth_addr[i][2], \
(info)->eth_addr[i][1], \
(info)->eth_addr[i][0]); \
\
if (i) \
sprintf(ethname, "eth%daddr", i); \
@ -410,6 +414,30 @@ do { \
setenv(ethname, buf); \
} \
} while (0)
/* The following macros are taken from Technexion's documentation */
#define TAM3517_sequence_number(info) \
((info)->sequence_number % 0x1000000000000LL)
#define TAM3517_week_of_year(info) (((info)->sequence_number >> 48) % 0x100)
#define TAM3517_year(info) ((info)->sequence_number >> 56)
#define TAM3517_revision_fixed(info) ((info)->revision % 0x100)
#define TAM3517_revision_major(info) (((info)->revision >> 8) % 0x100)
#define TAM3517_revision_tn(info) ((info)->revision >> 16)
#define TAM3517_PRINT_SOM_INFO(info) \
do { \
printf("Vendor:%s\n", (info)->customer); \
printf("SOM: %s\n", (info)->product); \
printf("SeqNr: %02llu%02llu%012llu\n", \
TAM3517_year(info), \
TAM3517_week_of_year(info), \
TAM3517_sequence_number(info)); \
printf("Rev: TN%u %u.%u\n", \
TAM3517_revision_tn(info), \
TAM3517_revision_major(info), \
TAM3517_revision_fixed(info)); \
} while (0)
#endif
#endif /* __TAM3517_H */