Commit d25e78aa authored by Joachim Eastwood's avatar Joachim Eastwood Committed by David S. Miller
Browse files

net/macb: support reversed hw addr 



This is used on one AT91RM9200 board where a bootloader stores
the Ethernet address in the wrong order.

Support this on macb so address setting functions can be shared
with the at91_ether driver.

Signed-off-by: default avatarJoachim Eastwood <manabian@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 17b8bb3e

drivers/net/ethernet/cadence/macb.c

+18 −6
Original line number Diff line number Diff line
@@ -111,22 +111,34 @@ static void __macb_set_hwaddr(struct macb *bp) 


static void __init macb_get_hwaddr(struct macb *bp)

{

	struct macb_platform_data *pdata;

	u32 bottom;

	u16 top;

	u8 addr[6];

	int i;



	pdata = bp->pdev->dev.platform_data;



	/* Check all 4 address register for vaild address */

	for (i = 0; i < 4; i++) {

		bottom = macb_or_gem_readl(bp, SA1B + i * 8);

		top = macb_or_gem_readl(bp, SA1T + i * 8);



		if (pdata && pdata->rev_eth_addr) {

			addr[5] = bottom & 0xff;

			addr[4] = (bottom >> 8) & 0xff;

			addr[3] = (bottom >> 16) & 0xff;

			addr[2] = (bottom >> 24) & 0xff;

			addr[1] = top & 0xff;

			addr[0] = (top & 0xff00) >> 8;

		} else {

			addr[0] = bottom & 0xff;

			addr[1] = (bottom >> 8) & 0xff;

			addr[2] = (bottom >> 16) & 0xff;

			addr[3] = (bottom >> 24) & 0xff;

			addr[4] = top & 0xff;

			addr[5] = (top >> 8) & 0xff;

		}



		if (is_valid_ether_addr(addr)) {

			memcpy(bp->dev->dev_addr, addr, sizeof(addr));

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