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OMAP3: TAM3517: add macros for reading eeprom
Added macros to read SOM information from the I2C EEPROM. Signed-off-by: Stefano Babic <sbabic@denx.de>
This commit is contained in:
parent
fe2d59a123
commit
31f5b651fa
3 changed files with 60 additions and 23 deletions
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@ -98,9 +98,12 @@ int board_init(void)
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return 0;
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}
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#ifndef CONFIG_SPL_BUILD
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int misc_init_r(void)
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{
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char *eth_addr;
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struct tam3517_module_info info;
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int ret;
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dieid_num_r();
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@ -108,12 +111,13 @@ int misc_init_r(void)
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if (eth_addr)
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return 0;
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#ifndef CONFIG_SPL_BUILD
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TAM3517_READ_MAC_FROM_EEPROM;
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#endif
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TAM3517_READ_EEPROM(&info, ret);
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if (!ret)
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TAM3517_READ_MAC_FROM_EEPROM(&info);
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return 0;
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}
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#endif
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/*
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* Routine: set_muxconf_regs
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@ -258,21 +258,26 @@ int board_init(void)
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return 0;
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}
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#ifndef CONFIG_SPL_BUILD
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int misc_init_r(void)
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{
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char *eth_addr;
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struct tam3517_module_info info;
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int ret;
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TAM3517_READ_EEPROM(&info, ret);
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dieid_num_r();
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eth_addr = getenv("ethaddr");
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if (eth_addr)
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if (ret)
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return 0;
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eth_addr = getenv("ethaddr");
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if (!eth_addr)
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TAM3517_READ_MAC_FROM_EEPROM(&info);
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#ifndef CONFIG_SPL_BUILD
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TAM3517_READ_MAC_FROM_EEPROM;
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#endif
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TAM3517_PRINT_SOM_INFO(&info);
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return 0;
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}
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#endif
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/*
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* Routine: set_muxconf_regs
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@ -357,7 +357,6 @@
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* I2C EEPROM
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*/
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#if !(defined(__KERNEL_STRICT_NAMES) || defined(__ASSEMBLY__))
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/*
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* The I2C EEPROM on the TAM3517 contains
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* mac address and production data
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@ -383,24 +382,29 @@ struct tam3517_module_info {
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unsigned char _rev[100];
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};
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#define TAM3517_READ_MAC_FROM_EEPROM \
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do { \
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struct tam3517_module_info info;\
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char buf[80], ethname[20]; \
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int i; \
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#define TAM3517_READ_EEPROM(info, ret) \
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do { \
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i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); \
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if (eeprom_read(CONFIG_SYS_I2C_EEPROM_ADDR, 0, \
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(void *)&info, sizeof(info))) \
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break; \
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(void *)info, sizeof(*info))) \
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ret = 1; \
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else \
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ret = 0; \
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} while (0)
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#define TAM3517_READ_MAC_FROM_EEPROM(info) \
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do { \
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char buf[80], ethname[20]; \
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int i; \
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memset(buf, 0, sizeof(buf)); \
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for (i = 0 ; i < ARRAY_SIZE(info.eth_addr); i++) { \
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for (i = 0 ; i < ARRAY_SIZE((info)->eth_addr); i++) { \
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sprintf(buf, "%02X:%02X:%02X:%02X:%02X:%02X", \
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info.eth_addr[i][5], \
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info.eth_addr[i][4], \
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info.eth_addr[i][3], \
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info.eth_addr[i][2], \
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info.eth_addr[i][1], \
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info.eth_addr[i][0]); \
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(info)->eth_addr[i][5], \
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(info)->eth_addr[i][4], \
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(info)->eth_addr[i][3], \
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(info)->eth_addr[i][2], \
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(info)->eth_addr[i][1], \
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(info)->eth_addr[i][0]); \
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\
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if (i) \
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sprintf(ethname, "eth%daddr", i); \
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@ -410,6 +414,30 @@ do { \
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setenv(ethname, buf); \
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} \
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} while (0)
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/* The following macros are taken from Technexion's documentation */
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#define TAM3517_sequence_number(info) \
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((info)->sequence_number % 0x1000000000000LL)
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#define TAM3517_week_of_year(info) (((info)->sequence_number >> 48) % 0x100)
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#define TAM3517_year(info) ((info)->sequence_number >> 56)
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#define TAM3517_revision_fixed(info) ((info)->revision % 0x100)
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#define TAM3517_revision_major(info) (((info)->revision >> 8) % 0x100)
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#define TAM3517_revision_tn(info) ((info)->revision >> 16)
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#define TAM3517_PRINT_SOM_INFO(info) \
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do { \
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printf("Vendor:%s\n", (info)->customer); \
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printf("SOM: %s\n", (info)->product); \
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printf("SeqNr: %02llu%02llu%012llu\n", \
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TAM3517_year(info), \
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TAM3517_week_of_year(info), \
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TAM3517_sequence_number(info)); \
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printf("Rev: TN%u %u.%u\n", \
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TAM3517_revision_tn(info), \
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TAM3517_revision_major(info), \
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TAM3517_revision_fixed(info)); \
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} while (0)
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#endif
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#endif /* __TAM3517_H */
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