[U-Boot] [PATCH] da830: add support to read mac addr from EEPROM

[Netagunte, Nagabhushana]

Hi Nick,
On Mon, Oct 03, 2011 at 17:31:05, Nick Thompson wrote:
> On 30/09/11 12:39, nagabhushana.netagunte at ti.com wrote:
> > From: Nagabhushana Netagunte <nagabhushana.netagunte at ti.com>
> >
> > da830 boards have mac address stored in I2C EEPROM. This patch adds 
> > support to restore mac address from EEPROM if environment variable 
> > 'ethaddr' is not set.
> >
> > Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj at ti.com>
> > Signed-off-by: Nagabhushana Netagunte <nagabhushana.netagunte at ti.com>
> > ---
> >  board/davinci/da8xxevm/da830evm.c |   20 ++++++++++++++++++++
> >  include/configs/da830evm.h        |    1 +
> >  2 files changed, 21 insertions(+), 0 deletions(-)
> >
> > diff --git a/board/davinci/da8xxevm/da830evm.c 
> > b/board/davinci/da8xxevm/da830evm.c
> > index 0650653..69ed293 100644
> > --- a/board/davinci/da8xxevm/da830evm.c
> > +++ b/board/davinci/da8xxevm/da830evm.c
> > @@ -188,6 +188,26 @@ int board_init(void)
> >  
> >  #define PHY_SW_I2C_ADDR	0x5f /* Address of PHY on i2c bus */
> >  
> > +int misc_init_r(void)
> > +{
> > +	uint8_t eeprom_enetaddr[6];
> > +	uint8_t val[2];
> > +
> > +	if (!eth_getenv_enetaddr("ethaddr", eeprom_enetaddr)) {
> > +		/* Read Ethernet MAC address from EEPROM if available. */
> > +		if (dvevm_read_mac_address(eeprom_enetaddr))
> > +			/* Set Ethernet MAC address from EEPROM */
> > +			davinci_sync_env_enetaddr(eeprom_enetaddr);
> > +	}
> > +
> > +	val[0] = 0x01;
> > +	val[1] = 0x23;
> > +
> > +	if (i2c_write(PHY_SW_I2C_ADDR, 0, 0, val, 2))
> > +		printf("Ethernet switch start failed!\n");
> > +
> > +}
> > +
> 
> There is already code to do this, in the same file, in board_eth_init(). Why the new code?
My bad. Will correct it.

Rgds,
Nag
> 
> Nick.
> 
> >  /*
> >   * Initializes on-board ethernet controllers.
> >   */
> > diff --git a/include/configs/da830evm.h b/include/configs/da830evm.h 
> > index 66fdea2..a451513 100644
> > --- a/include/configs/da830evm.h
> > +++ b/include/configs/da830evm.h
> > @@ -160,6 +160,7 @@
> >  /*
> >   * U-Boot general configuration
> >   */
> > +#define CONFIG_MISC_INIT_R
> >  #undef CONFIG_USE_IRQ			/* No IRQ/FIQ in U-Boot */
> >  #undef CONFIG_MISC_INIT_R
> >  #undef CONFIG_BOOTDELAY
> 
>