On Tue, Sep 13, 2016 at 10:49:04AM +0800, Wenyou Yang wrote:
> 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.y...@atmel.com>
> Signed-off-by: Songjun Wu <songjun...@microchip.com>
Reviewed-by: Andreas Bießmann <andr...@biessmann.org>
> ---
>
> 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..c94574b 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, CONFIG_AT24MAC_ADDR, 0, &dev)) {
> + printf("Failed to probe I2C chip\n");
> + return -1;
> + }
> +
> + if (dm_i2c_read(dev, CONFIG_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 77757a3..cada04f 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 CONFIG_AT24MAC_ADDR 0x5c
> +#define CONFIG_AT24MAC_REG 0x9a
> +
> /* Ethernet Hardware */
> #define CONFIG_MACB
> #define CONFIG_RMII
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