If 'ethaddr' is not set, we will get the ethernet address from AT24MAC, and set it to 'ethaddr' variable.
Signed-off-by: Wenyou Yang wenyou.yang@atmel.com Signed-off-by: Songjun Wu songjun.wu@microchip.com Reviewed-by: Andreas Bießmann biessmann@corscience.de ---
Changes in v3: - Collect Reviewed-by tag. - Rename CONFIG_AT24MAC_ADDR and CONFIG_AT24MAC_REG to AT24MAC_ADDR and AT24MAC_REG, removing the prefix CONFIG_, to avoid compile warning.
Changes in v2: None
board/atmel/sama5d2_xplained/sama5d2_xplained.c | 51 +++++++++++++++++++++++++ include/configs/sama5d2_xplained.h | 6 +++ 2 files changed, 57 insertions(+)
diff --git a/board/atmel/sama5d2_xplained/sama5d2_xplained.c b/board/atmel/sama5d2_xplained/sama5d2_xplained.c index 7ccadf2..cceccd2 100644 --- a/board/atmel/sama5d2_xplained/sama5d2_xplained.c +++ b/board/atmel/sama5d2_xplained/sama5d2_xplained.c @@ -7,6 +7,8 @@
#include <common.h> #include <atmel_hlcdc.h> +#include <dm.h> +#include <i2c.h> #include <lcd.h> #include <mmc.h> #include <net.h> @@ -192,6 +194,55 @@ int board_eth_init(bd_t *bis) return rc; }
+#ifdef CONFIG_CMD_I2C +static int set_ethaddr_from_eeprom(void) +{ + const int ETH_ADDR_LEN = 6; + unsigned char ethaddr[ETH_ADDR_LEN]; + const char *ETHADDR_NAME = "ethaddr"; + struct udevice *bus, *dev; + + if (getenv(ETHADDR_NAME)) + return 0; + + if (uclass_get_device_by_seq(UCLASS_I2C, 1, &bus)) { + printf("Cannot find I2C bus 1\n"); + return -1; + } + + if (dm_i2c_probe(bus, AT24MAC_ADDR, 0, &dev)) { + printf("Failed to probe I2C chip\n"); + return -1; + } + + if (dm_i2c_read(dev, AT24MAC_REG, ethaddr, ETH_ADDR_LEN)) { + printf("Failed to read ethernet address from EEPROM\n"); + return -1; + } + + if (!is_valid_ethaddr(ethaddr)) { + printf("The ethernet address read from EEPROM is not valid!\n"); + return -1; + } + + return eth_setenv_enetaddr(ETHADDR_NAME, ethaddr); +} +#else +static int set_ethaddr_from_eeprom(void) +{ + return 0; +} +#endif + +#ifdef CONFIG_MISC_INIT_R +int misc_init_r(void) +{ + set_ethaddr_from_eeprom(); + + return 0; +} +#endif + /* SPL */ #ifdef CONFIG_SPL_BUILD void spl_board_init(void) diff --git a/include/configs/sama5d2_xplained.h b/include/configs/sama5d2_xplained.h index 399d40f..c3515cc 100644 --- a/include/configs/sama5d2_xplained.h +++ b/include/configs/sama5d2_xplained.h @@ -15,6 +15,8 @@
#include "at91-sama5_common.h"
+#define CONFIG_MISC_INIT_R + /* SDRAM */ #define CONFIG_NR_DRAM_BANKS 1 #define CONFIG_SYS_SDRAM_BASE ATMEL_BASE_DDRCS @@ -54,6 +56,10 @@ #define CONFIG_DOS_PARTITION #endif
+/* I2C */ +#define AT24MAC_ADDR 0x5c +#define AT24MAC_REG 0x9a + /* Ethernet Hardware */ #define CONFIG_MACB #define CONFIG_RMII