ENGR00081147 Support i.MX35 3stack board

Support boot from NOR flash
Support Multiple ethernet:LAN9217 and FEC
Support upgrade u-boot

Signed-off-by: Fred Fan <r01011@freescale.com>

1 files changed, 442 insertions, 2 deletions

diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index 18a729c..5c00028 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -3,6 +3,8 @@
  *
  * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de>
  *
+ * (C) Copyright 2008-2009 Freescale Semiconductor, Inc.
+ *
  * See file CREDITS for list of people who contributed to this
  * project.
  *
@@ -35,13 +37,427 @@ u32 pkt_data_pull(struct eth_device *dev, u32 addr) \
 void pkt_data_push(struct eth_device *dev, u32 addr, u32 val) \
 	__attribute__ ((weak, alias ("smc911x_reg_write")));
 
+#if defined (CONFIG_DRIVER_SMC911X_32_BIT)
+static inline u32 smc911x_reg_read(u32 addr)
+{
+	return *(volatile u32*)addr;
+}
+static inline void smc911x_reg_write(u32 addr, u32 val)
+{
+	*(volatile u32*)addr = val;
+}
+#elif defined (CONFIG_DRIVER_SMC911X_16_BIT)
+static inline u32 smc911x_reg_read(u32 addr)
+{
+	volatile u16 *addr_16 = (u16 *)addr;
+	return ((*addr_16 & 0x0000ffff) | (*(addr_16 + 1) << 16));
+}
+
+static inline void smc911x_reg_write(u32 addr, u32 val)
+{
+	*(volatile u16*)addr = (u16)val;
+	*(volatile u16*)(addr + 2) = (u16)(val >> 16);
+}
+#else
+#error "SMC911X: undefined bus width"
+#endif /* CONFIG_DRIVER_SMC911X_16_BIT */
+
 #define mdelay(n)       udelay((n)*1000)
 
 static void smx911x_handle_mac_address(struct eth_device *dev)
+/* Below are the register offsets and bit definitions
+ * of the Lan911x memory space
+ */
+#define RX_DATA_FIFO		 (CONFIG_DRIVER_SMC911X_BASE + 0x00)
+
+#define TX_DATA_FIFO		 (CONFIG_DRIVER_SMC911X_BASE + 0x20)
+#define	TX_CMD_A_INT_ON_COMP			0x80000000
+#define	TX_CMD_A_INT_BUF_END_ALGN		0x03000000
+#define	TX_CMD_A_INT_4_BYTE_ALGN		0x00000000
+#define	TX_CMD_A_INT_16_BYTE_ALGN		0x01000000
+#define	TX_CMD_A_INT_32_BYTE_ALGN		0x02000000
+#define	TX_CMD_A_INT_DATA_OFFSET		0x001F0000
+#define	TX_CMD_A_INT_FIRST_SEG			0x00002000
+#define	TX_CMD_A_INT_LAST_SEG			0x00001000
+#define	TX_CMD_A_BUF_SIZE			0x000007FF
+#define	TX_CMD_B_PKT_TAG			0xFFFF0000
+#define	TX_CMD_B_ADD_CRC_DISABLE		0x00002000
+#define	TX_CMD_B_DISABLE_PADDING		0x00001000
+#define	TX_CMD_B_PKT_BYTE_LENGTH		0x000007FF
+
+#define RX_STATUS_FIFO		(CONFIG_DRIVER_SMC911X_BASE + 0x40)
+#define	RX_STS_PKT_LEN				0x3FFF0000
+#define	RX_STS_ES				0x00008000
+#define	RX_STS_BCST				0x00002000
+#define	RX_STS_LEN_ERR				0x00001000
+#define	RX_STS_RUNT_ERR				0x00000800
+#define	RX_STS_MCAST				0x00000400
+#define	RX_STS_TOO_LONG				0x00000080
+#define	RX_STS_COLL				0x00000040
+#define	RX_STS_ETH_TYPE				0x00000020
+#define	RX_STS_WDOG_TMT				0x00000010
+#define	RX_STS_MII_ERR				0x00000008
+#define	RX_STS_DRIBBLING			0x00000004
+#define	RX_STS_CRC_ERR				0x00000002
+#define RX_STATUS_FIFO_PEEK	(CONFIG_DRIVER_SMC911X_BASE + 0x44)
+#define TX_STATUS_FIFO		(CONFIG_DRIVER_SMC911X_BASE + 0x48)
+#define	TX_STS_TAG				0xFFFF0000
+#define	TX_STS_ES				0x00008000
+#define	TX_STS_LOC				0x00000800
+#define	TX_STS_NO_CARR				0x00000400
+#define	TX_STS_LATE_COLL			0x00000200
+#define	TX_STS_MANY_COLL			0x00000100
+#define	TX_STS_COLL_CNT				0x00000078
+#define	TX_STS_MANY_DEFER			0x00000004
+#define	TX_STS_UNDERRUN				0x00000002
+#define	TX_STS_DEFERRED				0x00000001
+#define TX_STATUS_FIFO_PEEK	(CONFIG_DRIVER_SMC911X_BASE + 0x4C)
+#define ID_REV			(CONFIG_DRIVER_SMC911X_BASE + 0x50)
+#define	ID_REV_CHIP_ID				0xFFFF0000  /* RO */
+#define	ID_REV_REV_ID				0x0000FFFF  /* RO */
+
+#define INT_CFG			(CONFIG_DRIVER_SMC911X_BASE + 0x54)
+#define	INT_CFG_INT_DEAS			0xFF000000  /* R/W */
+#define	INT_CFG_INT_DEAS_CLR			0x00004000
+#define	INT_CFG_INT_DEAS_STS			0x00002000
+#define	INT_CFG_IRQ_INT				0x00001000  /* RO */
+#define	INT_CFG_IRQ_EN				0x00000100  /* R/W */
+#define	INT_CFG_IRQ_POL				0x00000010  /* R/W Not Affected by SW Reset */
+#define	INT_CFG_IRQ_TYPE			0x00000001  /* R/W Not Affected by SW Reset */
+
+#define INT_STS			(CONFIG_DRIVER_SMC911X_BASE + 0x58)
+#define	INT_STS_SW_INT				0x80000000  /* R/WC */
+#define	INT_STS_TXSTOP_INT			0x02000000  /* R/WC */
+#define	INT_STS_RXSTOP_INT			0x01000000  /* R/WC */
+#define	INT_STS_RXDFH_INT			0x00800000  /* R/WC */
+#define	INT_STS_RXDF_INT			0x00400000  /* R/WC */
+#define	INT_STS_TX_IOC				0x00200000  /* R/WC */
+#define	INT_STS_RXD_INT				0x00100000  /* R/WC */
+#define	INT_STS_GPT_INT				0x00080000  /* R/WC */
+#define	INT_STS_PHY_INT				0x00040000  /* RO */
+#define	INT_STS_PME_INT				0x00020000  /* R/WC */
+#define	INT_STS_TXSO				0x00010000  /* R/WC */
+#define	INT_STS_RWT				0x00008000  /* R/WC */
+#define	INT_STS_RXE				0x00004000  /* R/WC */
+#define	INT_STS_TXE				0x00002000  /* R/WC */
+/*#define	INT_STS_ERX		0x00001000*/  /* R/WC */
+#define	INT_STS_TDFU				0x00000800  /* R/WC */
+#define	INT_STS_TDFO				0x00000400  /* R/WC */
+#define	INT_STS_TDFA				0x00000200  /* R/WC */
+#define	INT_STS_TSFF				0x00000100  /* R/WC */
+#define	INT_STS_TSFL				0x00000080  /* R/WC */
+/*#define	INT_STS_RXDF		0x00000040*/  /* R/WC */
+#define	INT_STS_RDFO				0x00000040  /* R/WC */
+#define	INT_STS_RDFL				0x00000020  /* R/WC */
+#define	INT_STS_RSFF				0x00000010  /* R/WC */
+#define	INT_STS_RSFL				0x00000008  /* R/WC */
+#define	INT_STS_GPIO2_INT			0x00000004  /* R/WC */
+#define	INT_STS_GPIO1_INT			0x00000002  /* R/WC */
+#define	INT_STS_GPIO0_INT			0x00000001  /* R/WC */
+#define INT_EN			(CONFIG_DRIVER_SMC911X_BASE + 0x5C)
+#define	INT_EN_SW_INT_EN			0x80000000  /* R/W */
+#define	INT_EN_TXSTOP_INT_EN			0x02000000  /* R/W */
+#define	INT_EN_RXSTOP_INT_EN			0x01000000  /* R/W */
+#define	INT_EN_RXDFH_INT_EN			0x00800000  /* R/W */
+/*#define	INT_EN_RXDF_INT_EN		0x00400000*/  /* R/W */
+#define	INT_EN_TIOC_INT_EN			0x00200000  /* R/W */
+#define	INT_EN_RXD_INT_EN			0x00100000  /* R/W */
+#define	INT_EN_GPT_INT_EN			0x00080000  /* R/W */
+#define	INT_EN_PHY_INT_EN			0x00040000  /* R/W */
+#define	INT_EN_PME_INT_EN			0x00020000  /* R/W */
+#define	INT_EN_TXSO_EN				0x00010000  /* R/W */
+#define	INT_EN_RWT_EN				0x00008000  /* R/W */
+#define	INT_EN_RXE_EN				0x00004000  /* R/W */
+#define	INT_EN_TXE_EN				0x00002000  /* R/W */
+/*#define	INT_EN_ERX_EN			0x00001000*/  /* R/W */
+#define	INT_EN_TDFU_EN				0x00000800  /* R/W */
+#define	INT_EN_TDFO_EN				0x00000400  /* R/W */
+#define	INT_EN_TDFA_EN				0x00000200  /* R/W */
+#define	INT_EN_TSFF_EN				0x00000100  /* R/W */
+#define	INT_EN_TSFL_EN				0x00000080  /* R/W */
+/*#define	INT_EN_RXDF_EN			0x00000040*/  /* R/W */
+#define	INT_EN_RDFO_EN				0x00000040  /* R/W */
+#define	INT_EN_RDFL_EN				0x00000020  /* R/W */
+#define	INT_EN_RSFF_EN				0x00000010  /* R/W */
+#define	INT_EN_RSFL_EN				0x00000008  /* R/W */
+#define	INT_EN_GPIO2_INT			0x00000004  /* R/W */
+#define	INT_EN_GPIO1_INT			0x00000002  /* R/W */
+#define	INT_EN_GPIO0_INT			0x00000001  /* R/W */
+
+#define BYTE_TEST		(CONFIG_DRIVER_SMC911X_BASE + 0x64)
+#define FIFO_INT		(CONFIG_DRIVER_SMC911X_BASE + 0x68)
+#define	FIFO_INT_TX_AVAIL_LEVEL			0xFF000000  /* R/W */
+#define	FIFO_INT_TX_STS_LEVEL			0x00FF0000  /* R/W */
+#define	FIFO_INT_RX_AVAIL_LEVEL			0x0000FF00  /* R/W */
+#define	FIFO_INT_RX_STS_LEVEL			0x000000FF  /* R/W */
+
+#define RX_CFG			(CONFIG_DRIVER_SMC911X_BASE + 0x6C)
+#define	RX_CFG_RX_END_ALGN			0xC0000000  /* R/W */
+#define		RX_CFG_RX_END_ALGN4		0x00000000  /* R/W */
+#define		RX_CFG_RX_END_ALGN16		0x40000000  /* R/W */
+#define		RX_CFG_RX_END_ALGN32		0x80000000  /* R/W */
+#define	RX_CFG_RX_DMA_CNT			0x0FFF0000  /* R/W */
+#define	RX_CFG_RX_DUMP				0x00008000  /* R/W */
+#define	RX_CFG_RXDOFF				0x00001F00  /* R/W */
+/*#define	RX_CFG_RXBAD			0x00000001*/  /* R/W */
+
+#define TX_CFG			(CONFIG_DRIVER_SMC911X_BASE + 0x70)
+/*#define	TX_CFG_TX_DMA_LVL		0xE0000000*/	 /* R/W */
+/*#define	TX_CFG_TX_DMA_CNT		0x0FFF0000*/	 /* R/W Self Clearing */
+#define	TX_CFG_TXS_DUMP				0x00008000  /* Self Clearing */
+#define	TX_CFG_TXD_DUMP				0x00004000  /* Self Clearing */
+#define	TX_CFG_TXSAO				0x00000004  /* R/W */
+#define	TX_CFG_TX_ON				0x00000002  /* R/W */
+#define	TX_CFG_STOP_TX				0x00000001  /* Self Clearing */
+
+#define HW_CFG			(CONFIG_DRIVER_SMC911X_BASE + 0x74)
+#define	HW_CFG_TTM				0x00200000  /* R/W */
+#define	HW_CFG_SF				0x00100000  /* R/W */
+#define	HW_CFG_TX_FIF_SZ			0x000F0000  /* R/W */
+#define	HW_CFG_TR				0x00003000  /* R/W */
+#define	HW_CFG_PHY_CLK_SEL			0x00000060  /* R/W */
+#define	HW_CFG_PHY_CLK_SEL_INT_PHY		0x00000000 /* R/W */
+#define	HW_CFG_PHY_CLK_SEL_EXT_PHY		0x00000020 /* R/W */
+#define	HW_CFG_PHY_CLK_SEL_CLK_DIS		0x00000040 /* R/W */
+#define	HW_CFG_SMI_SEL				0x00000010  /* R/W */
+#define	HW_CFG_EXT_PHY_DET			0x00000008  /* RO */
+#define	HW_CFG_EXT_PHY_EN			0x00000004  /* R/W */
+#define	HW_CFG_32_16_BIT_MODE			0x00000004  /* RO */
+#define	HW_CFG_SRST_TO				0x00000002  /* RO */
+#define	HW_CFG_SRST				0x00000001  /* Self Clearing */
+
+#define RX_DP_CTRL		(CONFIG_DRIVER_SMC911X_BASE + 0x78)
+#define	RX_DP_CTRL_RX_FFWD			0x80000000  /* R/W */
+#define	RX_DP_CTRL_FFWD_BUSY			0x80000000  /* RO */
+
+#define RX_FIFO_INF		(CONFIG_DRIVER_SMC911X_BASE + 0x7C)
+#define	 RX_FIFO_INF_RXSUSED			0x00FF0000  /* RO */
+#define	 RX_FIFO_INF_RXDUSED			0x0000FFFF  /* RO */
+
+#define TX_FIFO_INF		(CONFIG_DRIVER_SMC911X_BASE + 0x80)
+#define	TX_FIFO_INF_TSUSED			0x00FF0000  /* RO */
+#define	TX_FIFO_INF_TDFREE			0x0000FFFF  /* RO */
+
+#define PMT_CTRL		(CONFIG_DRIVER_SMC911X_BASE + 0x84)
+#define	PMT_CTRL_PM_MODE			0x00003000  /* Self Clearing */
+#define	PMT_CTRL_PHY_RST			0x00000400  /* Self Clearing */
+#define	PMT_CTRL_WOL_EN				0x00000200  /* R/W */
+#define	PMT_CTRL_ED_EN				0x00000100  /* R/W */
+#define	PMT_CTRL_PME_TYPE			0x00000040  /* R/W Not Affected by SW Reset */
+#define	PMT_CTRL_WUPS				0x00000030  /* R/WC */
+#define	PMT_CTRL_WUPS_NOWAKE			0x00000000  /* R/WC */
+#define	PMT_CTRL_WUPS_ED			0x00000010  /* R/WC */
+#define	PMT_CTRL_WUPS_WOL			0x00000020  /* R/WC */
+#define	PMT_CTRL_WUPS_MULTI			0x00000030  /* R/WC */
+#define	PMT_CTRL_PME_IND			0x00000008  /* R/W */
+#define	PMT_CTRL_PME_POL			0x00000004  /* R/W */
+#define	PMT_CTRL_PME_EN				0x00000002  /* R/W Not Affected by SW Reset */
+#define	PMT_CTRL_READY				0x00000001  /* RO */
+
+#define GPIO_CFG		(CONFIG_DRIVER_SMC911X_BASE + 0x88)
+#define	GPIO_CFG_LED3_EN			0x40000000  /* R/W */
+#define	GPIO_CFG_LED2_EN			0x20000000  /* R/W */
+#define	GPIO_CFG_LED1_EN			0x10000000  /* R/W */
+#define	GPIO_CFG_GPIO2_INT_POL			0x04000000  /* R/W */
+#define	GPIO_CFG_GPIO1_INT_POL			0x02000000  /* R/W */
+#define	GPIO_CFG_GPIO0_INT_POL			0x01000000  /* R/W */
+#define	GPIO_CFG_EEPR_EN			0x00700000  /* R/W */
+#define	GPIO_CFG_GPIOBUF2			0x00040000  /* R/W */
+#define	GPIO_CFG_GPIOBUF1			0x00020000  /* R/W */
+#define	GPIO_CFG_GPIOBUF0			0x00010000  /* R/W */
+#define	GPIO_CFG_GPIODIR2			0x00000400  /* R/W */
+#define	GPIO_CFG_GPIODIR1			0x00000200  /* R/W */
+#define	GPIO_CFG_GPIODIR0			0x00000100  /* R/W */
+#define	GPIO_CFG_GPIOD4				0x00000010  /* R/W */
+#define	GPIO_CFG_GPIOD3				0x00000008  /* R/W */
+#define	GPIO_CFG_GPIOD2				0x00000004  /* R/W */
+#define	GPIO_CFG_GPIOD1				0x00000002  /* R/W */
+#define	GPIO_CFG_GPIOD0				0x00000001  /* R/W */
+
+#define GPT_CFG			(CONFIG_DRIVER_SMC911X_BASE + 0x8C)
+#define	GPT_CFG_TIMER_EN			0x20000000  /* R/W */
+#define	GPT_CFG_GPT_LOAD			0x0000FFFF  /* R/W */
+
+#define GPT_CNT			(CONFIG_DRIVER_SMC911X_BASE + 0x90)
+#define	GPT_CNT_GPT_CNT				0x0000FFFF  /* RO */
+
+#define ENDIAN			(CONFIG_DRIVER_SMC911X_BASE + 0x98)
+#define FREE_RUN		(CONFIG_DRIVER_SMC911X_BASE + 0x9C)
+#define RX_DROP			(CONFIG_DRIVER_SMC911X_BASE + 0xA0)
+#define MAC_CSR_CMD		(CONFIG_DRIVER_SMC911X_BASE + 0xA4)
+#define	 MAC_CSR_CMD_CSR_BUSY			0x80000000  /* Self Clearing */
+#define	 MAC_CSR_CMD_R_NOT_W			0x40000000  /* R/W */
+#define	 MAC_CSR_CMD_CSR_ADDR			0x000000FF  /* R/W */
+
+#define MAC_CSR_DATA		(CONFIG_DRIVER_SMC911X_BASE + 0xA8)
+#define AFC_CFG			(CONFIG_DRIVER_SMC911X_BASE + 0xAC)
+#define		AFC_CFG_AFC_HI			0x00FF0000  /* R/W */
+#define		AFC_CFG_AFC_LO			0x0000FF00  /* R/W */
+#define		AFC_CFG_BACK_DUR		0x000000F0  /* R/W */
+#define		AFC_CFG_FCMULT			0x00000008  /* R/W */
+#define		AFC_CFG_FCBRD			0x00000004  /* R/W */
+#define		AFC_CFG_FCADD			0x00000002  /* R/W */
+#define		AFC_CFG_FCANY			0x00000001  /* R/W */
+
+#define E2P_CMD			(CONFIG_DRIVER_SMC911X_BASE + 0xB0)
+#define		E2P_CMD_EPC_BUSY		0x80000000  /* Self Clearing */
+#define		E2P_CMD_EPC_CMD			0x70000000  /* R/W */
+#define		E2P_CMD_EPC_CMD_READ		0x00000000  /* R/W */
+#define		E2P_CMD_EPC_CMD_EWDS		0x10000000  /* R/W */
+#define		E2P_CMD_EPC_CMD_EWEN		0x20000000  /* R/W */
+#define		E2P_CMD_EPC_CMD_WRITE		0x30000000  /* R/W */
+#define		E2P_CMD_EPC_CMD_WRAL		0x40000000  /* R/W */
+#define		E2P_CMD_EPC_CMD_ERASE		0x50000000  /* R/W */
+#define		E2P_CMD_EPC_CMD_ERAL		0x60000000  /* R/W */
+#define		E2P_CMD_EPC_CMD_RELOAD		0x70000000  /* R/W */
+#define		E2P_CMD_EPC_TIMEOUT		0x00000200  /* RO */
+#define		E2P_CMD_MAC_ADDR_LOADED		0x00000100  /* RO */
+#define		E2P_CMD_EPC_ADDR		0x000000FF  /* R/W */
+
+#define E2P_DATA		(CONFIG_DRIVER_SMC911X_BASE + 0xB4)
+#define	E2P_DATA_EEPROM_DATA			0x000000FF  /* R/W */
+/* end of LAN register offsets and bit definitions */
+
+/* MAC Control and Status registers */
+#define MAC_CR			0x01  /* R/W */
+
+/* MAC_CR - MAC Control Register */
+#define MAC_CR_RXALL			0x80000000
+/* TODO: delete this bit? It is not described in the data sheet. */
+#define MAC_CR_HBDIS			0x10000000
+#define MAC_CR_RCVOWN			0x00800000
+#define MAC_CR_LOOPBK			0x00200000
+#define MAC_CR_FDPX			0x00100000
+#define MAC_CR_MCPAS			0x00080000
+#define MAC_CR_PRMS			0x00040000
+#define MAC_CR_INVFILT			0x00020000
+#define MAC_CR_PASSBAD			0x00010000
+#define MAC_CR_HFILT			0x00008000
+#define MAC_CR_HPFILT			0x00002000
+#define MAC_CR_LCOLL			0x00001000
+#define MAC_CR_BCAST			0x00000800
+#define MAC_CR_DISRTY			0x00000400
+#define MAC_CR_PADSTR			0x00000100
+#define MAC_CR_BOLMT_MASK		0x000000C0
+#define MAC_CR_DFCHK			0x00000020
+#define MAC_CR_TXEN			0x00000008
+#define MAC_CR_RXEN			0x00000004
+
+#define ADDRH			0x02	  /* R/W mask 0x0000FFFFUL */
+#define ADDRL			0x03	  /* R/W mask 0xFFFFFFFFUL */
+#define HASHH			0x04	  /* R/W */
+#define HASHL			0x05	  /* R/W */
+
+#define MII_ACC			0x06	  /* R/W */
+#define MII_ACC_PHY_ADDR		0x0000F800
+#define MII_ACC_MIIRINDA		0x000007C0
+#define MII_ACC_MII_WRITE		0x00000002
+#define MII_ACC_MII_BUSY		0x00000001
+
+#define MII_DATA		0x07	  /* R/W mask 0x0000FFFFUL */
+
+#define FLOW			0x08	  /* R/W */
+#define FLOW_FCPT			0xFFFF0000
+#define FLOW_FCPASS			0x00000004
+#define FLOW_FCEN			0x00000002
+#define FLOW_FCBSY			0x00000001
+
+#define VLAN1			0x09	  /* R/W mask 0x0000FFFFUL */
+#define VLAN1_VTI1			0x0000ffff
+
+#define VLAN2			0x0A	  /* R/W mask 0x0000FFFFUL */
+#define VLAN2_VTI2			0x0000ffff
+
+#define WUFF			0x0B	  /* WO */
+
+#define WUCSR			0x0C	  /* R/W */
+#define WUCSR_GUE			0x00000200
+#define WUCSR_WUFR			0x00000040
+#define WUCSR_MPR			0x00000020
+#define WUCSR_WAKE_EN			0x00000004
+#define WUCSR_MPEN			0x00000002
+
+/* Chip ID values */
+#define CHIP_9115	0x115
+#define CHIP_9116	0x116
+#define CHIP_9117	0x117
+#define CHIP_9118	0x118
+#define CHIP_9215	0x115a
+#define CHIP_9216	0x116a
+#define CHIP_9217	0x117a
+#define CHIP_9218	0x118a
+
+struct chip_id {
+	u16 id;
+	char *name;
+};
+
+static const struct chip_id chip_ids[] =  {
+	{ CHIP_9115, "LAN9115" },
+	{ CHIP_9116, "LAN9116" },
+	{ CHIP_9117, "LAN9117" },
+	{ CHIP_9118, "LAN9118" },
+	{ CHIP_9215, "LAN9215" },
+	{ CHIP_9216, "LAN9216" },
+	{ CHIP_9217, "LAN9217" },
+	{ CHIP_9218, "LAN9218" },
+	{ 0, NULL },
+};
+
+#define DRIVERNAME "smc911x"
+
+u32 smc911x_get_mac_csr(u8 reg)
+{
+	while (reg_read(MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
+		;
+	reg_write(MAC_CSR_CMD, MAC_CSR_CMD_CSR_BUSY | MAC_CSR_CMD_R_NOT_W | reg);
+	while (reg_read(MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
+		;
+
+	return reg_read(MAC_CSR_DATA);
+}
+
+void smc911x_set_mac_csr(u8 reg, u32 data)
+{
+	while (reg_read(MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
+		;
+	reg_write(MAC_CSR_DATA, data);
+	reg_write(MAC_CSR_CMD, MAC_CSR_CMD_CSR_BUSY | reg);
+	while (reg_read(MAC_CSR_CMD) & MAC_CSR_CMD_CSR_BUSY)
+		;
+}
+
+static int smx911x_handle_mac_address(struct eth_device *dev)
 {
 	unsigned long addrh, addrl;
 	uchar *m = dev->enetaddr;
 
+	/* if the environment has a valid mac address then use it */
+	if ((m[0] | m[1] | m[2] | m[3] | m[4] | m[5])) {
+		addrl = m[0] | m[1] << 8 | m[2] << 16 | m[3] << 24;
+		addrh = m[4] | m[5] << 8;
+		smc911x_set_mac_csr(ADDRH, addrh);
+		smc911x_set_mac_csr(ADDRL, addrl);
+	} else {
+		/* if not, try to get one from the eeprom */
+		addrh = smc911x_get_mac_csr(ADDRH);
+		addrl = smc911x_get_mac_csr(ADDRL);
+
+		m[0] = (addrl       ) & 0xff;
+		m[1] = (addrl >>  8 ) & 0xff;
+		m[2] = (addrl >> 16 ) & 0xff;
+		m[3] = (addrl >> 24 ) & 0xff;
+		m[4] = (addrh       ) & 0xff;
+		m[5] = (addrh >>  8 ) & 0xff;
+
+		/* we get 0xff when there is no eeprom connected */
+		if ((m[0] & m[1] & m[2] & m[3] & m[4] & m[5]) == 0xff) {
+			printf(DRIVERNAME ": no valid mac address in environment "
+				"and no eeprom found\n");
+			return -1;
+		}
+	}
+
 	addrl = m[0] | (m[1] << 8) | (m[2] << 16) | (m[3] << 24);
 	addrh = m[4] | (m[5] << 8);
 	smc911x_set_mac_csr(dev, ADDRL, addrl);
@@ -144,7 +560,11 @@ static void smc911x_enable(struct eth_device *dev)
 
 }
 
-static int smc911x_init(struct eth_device *dev, bd_t * bd)
+#ifndef CONFIG_NET_MULTI
+int eth_init(bd_t *bd)
+#else
+static int smc911x_init(struct eth_device *dev, bd_t *bd)
+#endif
 {
 	printf(DRIVERNAME ": initializing\n");
 
@@ -156,7 +576,12 @@ static int smc911x_init(struct eth_device *dev, bd_t * bd)
 	/* Configure the PHY, initialize the link state */
 	smc911x_phy_configure(dev);
 
-	smx911x_handle_mac_address(dev);
+#ifndef CONFIG_NET_MULTI
+	if (smx911x_handle_mac_address(bd->bi_enetaddr))
+#else
+	if (smx911x_handle_mac_address(dev))
+#endif
+		goto err_out;
 
 	/* Turn on Tx + Rx */
 	smc911x_enable(dev);
@@ -167,8 +592,12 @@ err_out:
 	return -1;
 }
 
+#ifndef CONFIG_NET_MULTI
+int eth_send(volatile void *packet, int length)
+#else
 static int smc911x_send(struct eth_device *dev,
 			volatile void *packet, int length)
+#endif
 {
 	u32 *data = (u32*)packet;
 	u32 tmplen;
@@ -207,12 +636,20 @@ static int smc911x_send(struct eth_device *dev,
 	return -1;
 }
 
+#ifndef CONFIG_NET_MULTI
+void eth_halt(void)
+#else
 static void smc911x_halt(struct eth_device *dev)
+#endif
 {
 	smc911x_reset(dev);
 }
 
+#ifndef CONFIG_NET_MULTI
+int eth_rx(void)
+#else
 static int smc911x_rx(struct eth_device *dev)
+#endif
 {
 	u32 *data = (u32 *)NetRxPackets[0];
 	u32 pktlen, tmplen;
@@ -239,6 +676,7 @@ static int smc911x_rx(struct eth_device *dev)
 	return 0;
 }
 
+#if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI)
 int smc911x_initialize(u8 dev_num, int base_addr)
 {
 	unsigned long addrl, addrh;
@@ -250,6 +688,7 @@ int smc911x_initialize(u8 dev_num, int base_addr)
 		return 0;
 	}
 	memset(dev, 0, sizeof(*dev));
+	strcpy(dev->name, DRIVERNAME);
 
 	dev->iobase = base_addr;
 
@@ -271,3 +710,4 @@ int smc911x_initialize(u8 dev_num, int base_addr)
 	eth_register(dev);
 	return 0;
 }
+#endif