bgmac: make bgmac work on systems without nvram

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
 drivers/net/ethernet/broadcom/bgmac.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/net/ethernet/broadcom/Kconfig
+++ b/drivers/net/ethernet/broadcom/Kconfig
@@ -132,7 +132,7 @@ config BNX2X_SRIOV
 
 config BGMAC
 	tristate "BCMA bus GBit core support"
-	depends on BCMA_HOST_SOC && HAS_DMA && BCM47XX
+	depends on BCMA_HOST_SOC && HAS_DMA
 	select PHYLIB
 	---help---
 	  This driver supports GBit MAC and BCM4706 GBit MAC cores on BCMA bus.
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -17,7 +17,11 @@
 #include <linux/interrupt.h>
 #include <linux/dma-mapping.h>
 #include <linux/platform_data/b53.h>
+#ifdef CONFIG_BCM47XX
 #include <bcm47xx_nvram.h>
+#else
+#define bcm47xx_nvram_getenv(a, b, c) -1
+#endif
 
 static const struct bcma_device_id bgmac_bcma_tbl[] = {
 	BCMA_CORE(BCMA_MANUF_BCM, BCMA_CORE_4706_MAC_GBIT, BCMA_ANY_REV, BCMA_ANY_CLASS),
@@ -1445,7 +1449,7 @@ static int bgmac_probe(struct bcma_devic
 	int err;
 
 	/* We don't support 2nd, 3rd, ... units, SPROM has to be adjusted */
-	if (core->core_unit > 1) {
+	if (core->core_unit > 0) {
 		pr_err("Unsupported core_unit %d\n", core->core_unit);
 		return -ENOTSUPP;
 	}
@@ -1541,8 +1545,7 @@ static int bgmac_probe(struct bcma_devic
 	/* TODO: reset the external phy. Specs are needed */
 	bgmac_phy_reset(bgmac);
 
-	bgmac->has_robosw = !!(core->bus->sprom.boardflags_lo &
-			       BGMAC_BFL_ENETROBO);
+	bgmac->has_robosw = 1;
 	if (bgmac->has_robosw)
 		bgmac_warn(bgmac, "Support for Roboswitch not implemented\n");