Initial revision

board/evb64260/eth.c

@@ -0,0 +1,797 @@
+/**************************************************************************
+Etherboot -  BOOTP/TFTP Bootstrap Program
+Skeleton NIC driver for Etherboot
+***************************************************************************/
+
+/*
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2, or (at
+ * your option) any later version.
+ */
+
+/*
+ * This file is a modified version from the Galileo polled mode
+ * network driver for the ethernet contained within the GT64260
+ * chip. It has been modified to fit into the U-Boot framework, from
+ * the original (etherboot) setup.  Also, additional cleanup and features
+ * were added.
+ *
+ * - Josh Huber <huber@mclx.com>
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <cmd_bsp.h>
+#include <galileo/gt64260R.h>
+#include <galileo/core.h>
+#include <asm/cache.h>
+#include <miiphy.h>
+#include <net.h>
+
+#include "eth.h"
+#include "eth_addrtbl.h"
+
+#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(CONFIG_NET_MULTI)
+
+#define GT6426x_ETH_BUF_SIZE	1536
+
+/* if you like verbose output, turn this on! */
+#undef DEBUG
+
+/* Restart autoneg if we detect link is up on phy init. */
+
+/*
+ * The GT doc's say that after Rst is deasserted, and the PHY
+ * reports autoneg complete, it runs through its autoneg
+ * procedures. This doesn't seem to be the case for MII
+ * PHY's. To work around this check for link up && autoneg
+ * complete when initilizing the port. If they are both set,
+ * then restart PHY autoneg. Of course, it may be something
+ * completly different.
+ */
+#ifdef CONFIG_ETHER_PORT_MII
+# define RESTART_AUTONEG
+#endif
+
+/* do this if you dont want to use snooping */
+#define USE_SOFTWARE_CACHE_MANAGEMENT
+
+#ifdef USE_SOFTWARE_CACHE_MANAGEMENT
+#define FLUSH_DCACHE(a,b)                if(dcache_status()){clean_dcache_range((u32)(a),(u32)(b));}
+#define FLUSH_AND_INVALIDATE_DCACHE(a,b) if(dcache_status()){flush_dcache_range((u32)(a),(u32)(b));}
+#define INVALIDATE_DCACHE(a,b)           if(dcache_status()){invalidate_dcache_range((u32)(a),(u32)(b));}
+#else
+/* bummer - w/o flush, nothing works, even with snooping - FIXME */
+/* #define FLUSH_DCACHE(a,b) */
+#define FLUSH_DCACHE(a,b)                if(dcache_status()){clean_dcache_range((u32)(a),(u32)(b));}
+#define FLUSH_AND_INVALIDATE_DCACHE(a,b)
+#define INVALIDATE_DCACHE(a,b)
+#endif
+struct eth_dev_s {
+	eth0_tx_desc_single *eth_tx_desc;
+	eth0_rx_desc_single *eth_rx_desc;
+	char *eth_tx_buffer;
+	char *eth_rx_buffer[NR];
+	int tdn, rdn;
+	int dev;
+	unsigned int reg_base;
+};
+
+
+#ifdef CONFIG_INTEL_LXT97X
+/* for intel LXT972 */
+static const char ether_port_phy_addr[3]={0,1,2};
+#else
+static const char ether_port_phy_addr[3]={4,5,6};
+#endif
+
+
+static inline unsigned short
+miiphy_read_ret(unsigned short phy, unsigned short reg)
+{
+    unsigned short val;
+    miiphy_read(phy,reg,&val);
+    return val;
+}
+
+
+/**************************************************************************
+RESET - Reset adapter
+***************************************************************************/
+void
+gt6426x_eth_reset(void *v)
+{
+	/*  we should do something here...
+	struct eth_device *wp = (struct eth_device *)v;
+	struct eth_dev_s *p = wp->priv;
+	*/
+
+	printf ("RESET\n");
+	/* put the card in its initial state */
+}
+
+static void gt6426x_handle_SMI(struct eth_dev_s *p, unsigned int icr)
+{
+#ifdef DEBUG
+    printf("SMI interrupt: ");
+
+    if(icr&0x20000000) {
+    	printf("SMI done\n");
+    }
+#endif
+
+    if(icr&0x10000000) {
+        unsigned int psr;
+	psr=GTREGREAD(ETHERNET0_PORT_STATUS_REGISTER + p->reg_base);
+#ifdef DEBUG
+	printf("PHY state change:\n"
+	       "  GT:%s:%s:%s:%s\n",
+		psr&1?"100":" 10",
+		psr&8?" Link":"nLink",
+		psr&2?"FD":"HD",
+		psr&4?" FC":"nFC");
+
+#ifdef CONFIG_INTEL_LXT97X /* non-standard mii reg (intel lxt972a) */
+	{
+        unsigned short mii_11;
+	mii_11=miiphy_read_ret(ether_port_phy_addr[p->dev],0x11);
+
+	printf(" mii:%s:%s:%s:%s %s:%s %s\n",
+		mii_11&(1<<14)?"100":" 10",
+		mii_11&(1<<10)?" Link":"nLink",
+		mii_11&(1<<9)?"FD":"HD",
+		mii_11&(1<<4)?" FC":"nFC",
+
+		mii_11&(1<<7)?"ANc":"ANnc",
+		mii_11&(1<<8)?"AN":"Manual",
+		""
+		);
+	}
+#endif /* CONFIG_INTEL_LXT97X */
+#endif /* DEBUG */
+    }
+}
+
+static int
+gt6426x_eth_receive(struct eth_dev_s *p,unsigned int icr)
+{
+	int eth_len=0;
+	char *eth_data;
+
+	eth0_rx_desc_single *rx=&p->eth_rx_desc[(p->rdn)];
+
+	INVALIDATE_DCACHE((unsigned int)rx,(unsigned int)(rx+1));
+
+	if (rx->command_status & 0x80000000) {
+		return 0; /* No packet received */
+	}
+
+	eth_len = (unsigned int)
+		(rx->buff_size_byte_count) & 0x0000ffff;
+	eth_data = (char *) p->eth_rx_buffer[p->rdn];
+
+#ifdef DEBUG
+	if (eth_len) {
+		printf ("%s: Recived %d byte Packet @ 0x%p\n",
+			__FUNCTION__, eth_len, eth_data);
+	}
+#endif
+	/*
+	 * packet is now in:
+	 * eth0_rx_buffer[RDN_ETH0];
+	 */
+
+	/* let the upper layer handle the packet */
+	NetReceive (eth_data, eth_len);
+
+	rx->buff_size_byte_count = GT6426x_ETH_BUF_SIZE<<16;
+
+
+	/* GT96100 Owner */
+	rx->command_status = 0x80000000;
+
+	FLUSH_DCACHE((unsigned int)rx,(unsigned int)(rx+1));
+
+	p->rdn ++;
+	if (p->rdn == NR) {p->rdn = 0;}
+
+	sync();
+
+	/* Start Rx*/
+	GT_REG_WRITE (ETHERNET0_SDMA_COMMAND_REGISTER + p->reg_base, 0x00000080);
+
+#ifdef DEBUG
+	{
+	    int i;
+	    for (i=0;i<12;i++) {
+		printf(" %02x", eth_data[i]);
+	    }
+	}
+	printf(": %d bytes\n", eth_len);
+#endif
+	INVALIDATE_DCACHE((unsigned int)eth_data,
+		(unsigned int)eth_data+eth_len);
+	return eth_len;
+}
+
+/**************************************************************************
+POLL - look for an rx frame, handle other conditions
+***************************************************************************/
+int
+gt6426x_eth_poll(void *v)
+{
+	struct eth_device *wp = (struct eth_device *)v;
+	struct eth_dev_s *p = wp->priv;
+	unsigned int icr=GTREGREAD(ETHERNET0_INTERRUPT_CAUSE_REGISTER + p->reg_base);
+
+	if(icr) {
+	    GT_REG_WRITE(ETHERNET0_INTERRUPT_CAUSE_REGISTER +p->reg_base, 0);
+#ifdef DEBUG
+	    printf("poll got ICR %08x\n", icr);
+#endif
+	    /* SMI done or PHY state change*/
+	    if(icr&0x30000000) gt6426x_handle_SMI(p, icr);
+	}
+	/* always process. We aren't using RX interrupts */
+	return gt6426x_eth_receive(p, icr);
+}
+
+/**************************************************************************
+TRANSMIT - Transmit a frame
+***************************************************************************/
+int
+gt6426x_eth_transmit(void *v, volatile char *p, unsigned int s)
+{
+	struct eth_device *wp = (struct eth_device *)v;
+	struct eth_dev_s *dev = (struct eth_dev_s *)wp->priv;
+#ifdef DEBUG
+	unsigned int old_command_stat,old_psr;
+#endif
+	eth0_tx_desc_single *tx=&dev->eth_tx_desc[dev->tdn];
+
+	/* wait for tx to be ready */
+	INVALIDATE_DCACHE((unsigned int)tx,(unsigned int)(tx+1));
+	while (tx->command_status & 0x80000000) {
+	    int i;
+	    for(i=0;i<1000;i++);
+			INVALIDATE_DCACHE((unsigned int)tx,(unsigned int)(tx+1));
+	}
+
+	GT_REG_WRITE (ETHERNET0_CURRENT_TX_DESCRIPTOR_POINTER0 + dev->reg_base,
+		      (unsigned int)tx);
+
+#ifdef DEBUG
+	printf("copying to tx_buffer [%p], length %x, desc = %p\n",
+	       dev->eth_tx_buffer, s, dev->eth_tx_desc);
+#endif
+	memcpy(dev->eth_tx_buffer, (char *) p, s);
+
+	tx->buff_pointer = dev->eth_tx_buffer;
+	tx->bytecount_reserved = ((__u16)s) << 16;
+
+	/*    31 - own
+	 *    22 - gencrc
+	 * 18:16 - pad, last, first */
+	tx->command_status = (1<<31) | (1<<22) | (7<<16);
+#if 0
+	/* FEr #18 */
+	tx->next_desc = NULL;
+#else
+	tx->next_desc =
+		(struct eth0_tx_desc_struct *)
+		&dev->eth_tx_desc[(dev->tdn+1)%NT].bytecount_reserved;
+
+	/* cpu owned */
+	dev->eth_tx_desc[(dev->tdn+1)%NT].command_status = (7<<16);	/* pad, last, first */
+#endif
+
+#ifdef DEBUG
+	old_command_stat=tx->command_status,
+	old_psr=GTREGREAD(ETHERNET0_PORT_STATUS_REGISTER + dev->reg_base);
+#endif
+
+	FLUSH_DCACHE((unsigned int)tx,
+		(unsigned int)&dev->eth_tx_desc[(dev->tdn+2)%NT]);
+
+	FLUSH_DCACHE((unsigned int)dev->eth_tx_buffer,(unsigned int)dev->eth_tx_buffer+s);
+
+	GT_REG_WRITE(ETHERNET0_SDMA_COMMAND_REGISTER + dev->reg_base, 0x01000000);
+
+#ifdef DEBUG
+	{
+	    unsigned int command_stat=0;
+	    printf("cmd_stat: %08x PSR: %08x\n", old_command_stat, old_psr);
+	    /* wait for tx to be ready */
+	    do {
+		unsigned int psr=GTREGREAD(ETHERNET0_PORT_STATUS_REGISTER + dev->reg_base);
+		command_stat=tx->command_status;
+		if(command_stat!=old_command_stat || psr !=old_psr) {
+		    printf("cmd_stat: %08x PSR: %08x\n", command_stat, psr);
+		    old_command_stat = command_stat;
+		    old_psr = psr;
+		}
+		/* gt6426x_eth0_poll(); */
+	    } while (command_stat & 0x80000000);
+
+	    printf("sent %d byte frame\n", s);
+
+	    if((command_stat & (3<<15)) == 3) {
+		printf("frame had error (stat=%08x)\n", command_stat);
+	    }
+	}
+#endif
+	return 0;
+}
+
+/**************************************************************************
+DISABLE - Turn off ethernet interface
+***************************************************************************/
+void
+gt6426x_eth_disable(void *v)
+{
+	struct eth_device *wp = (struct eth_device *)v;
+	struct eth_dev_s *p = (struct eth_dev_s *)wp->priv;
+
+	GT_REG_WRITE(ETHERNET0_SDMA_COMMAND_REGISTER + p->reg_base, 0x80008000);
+}
+
+/**************************************************************************
+MII utilities - write: write to an MII register via SMI
+***************************************************************************/
+int
+miiphy_write(unsigned char phy, unsigned char reg,
+    unsigned short data)
+{
+    unsigned int temp= (reg<<21) | (phy<<16) | data;
+
+    while(GTREGREAD(ETHERNET_SMI_REGISTER) & (1<<28));	/* wait for !Busy */
+
+    GT_REG_WRITE(ETHERNET_SMI_REGISTER, temp);
+    return 0;
+}
+
+/**************************************************************************
+MII utilities - read: read from an MII register via SMI
+***************************************************************************/
+int
+miiphy_read(unsigned char phy, unsigned char reg,
+			unsigned short *val)
+{
+    unsigned int temp= (reg<<21) | (phy<<16) | 1<<26;
+
+    while(GTREGREAD(ETHERNET_SMI_REGISTER) & (1<<28));	/* wait for !Busy */
+
+    GT_REG_WRITE(ETHERNET_SMI_REGISTER, temp);
+
+    while(1) {
+	temp=GTREGREAD(ETHERNET_SMI_REGISTER);
+	if(temp & (1<<27)) break;		/* wait for ReadValid */
+    }
+    *val = temp & 0xffff;
+
+    return 0;
+}
+
+#ifdef DEBUG
+/**************************************************************************
+MII utilities - dump mii registers
+***************************************************************************/
+static void
+gt6426x_dump_mii(bd_t *bis, unsigned short phy)
+{
+	printf("mii reg 0 - 3:   %04x %04x %04x %04x\n",
+ 		miiphy_read_ret(phy, 0x0),
+		miiphy_read_ret(phy, 0x1),
+		miiphy_read_ret(phy, 0x2),
+		miiphy_read_ret(phy, 0x3)
+		);
+	printf("        4 - 7:   %04x %04x %04x %04x\n",
+		miiphy_read_ret(phy, 0x4),
+		miiphy_read_ret(phy, 0x5),
+		miiphy_read_ret(phy, 0x6),
+		miiphy_read_ret(phy, 0x7)
+		);
+	printf("        8:       %04x\n",
+		miiphy_read_ret(phy, 0x8)
+		);
+	printf("        16-19:   %04x %04x %04x %04x\n",
+		miiphy_read_ret(phy, 0x10),
+		miiphy_read_ret(phy, 0x11),
+		miiphy_read_ret(phy, 0x12),
+		miiphy_read_ret(phy, 0x13)
+		);
+	printf("        20,30:   %04x %04x\n",
+		miiphy_read_ret(phy, 20),
+		miiphy_read_ret(phy, 30)
+		);
+}
+#endif
+
+#ifdef RESTART_AUTONEG
+
+/* If link is up && autoneg compleate, and if
+ * GT and PHY disagree about link capabilitys,
+ * restart autoneg - something screwy with FD/HD
+ * unless we do this. */
+static void
+check_phy_state(struct eth_dev_s *p)
+{
+	int bmsr = miiphy_read_ret(ether_port_phy_addr[p->dev], PHY_BMSR);
+	int psr = GTREGREAD(ETHERNET0_PORT_STATUS_REGISTER + p->reg_base);
+
+	if ((psr & 1<<3) && (bmsr & PHY_BMSR_LS)) {
+		int nego = miiphy_read_ret(ether_port_phy_addr[p->dev], PHY_ANAR) &
+				miiphy_read_ret(ether_port_phy_addr[p->dev], PHY_ANLPAR);
+		int want;
+
+		if (nego & PHY_ANLPAR_TXFD) {
+			want = 0x3;
+			printf("MII: 100Base-TX, Full Duplex\n");
+		} else if (nego & PHY_ANLPAR_TX) {
+			want = 0x1;
+			printf("MII: 100Base-TX, Half Duplex\n");
+		} else if (nego & PHY_ANLPAR_10FD) {
+			want = 0x2;
+			printf("MII: 10Base-T, Full Duplex\n");
+		} else if (nego & PHY_ANLPAR_10) {
+			want = 0x0;
+			printf("MII: 10Base-T, Half Duplex\n");
+		} else {
+			printf("MII: Unknown link-foo! %x\n", nego);
+			return;
+		}
+
+		if ((psr & 0x3) != want) {
+			printf("MII: GT thinks %x, PHY thinks %x, restarting autoneg..\n",
+					psr & 0x3, want);
+			miiphy_write(ether_port_phy_addr[p->dev],0,
+					miiphy_read_ret(ether_port_phy_addr[p->dev],0) | (1<<9));
+			udelay(10000);	/* the EVB's GT takes a while to notice phy
+					   went down and up */
+		}
+	}
+}
+#endif
+
+/**************************************************************************
+PROBE - Look for an adapter, this routine's visible to the outside
+***************************************************************************/
+int
+gt6426x_eth_probe(void *v, bd_t *bis)
+{
+	struct eth_device *wp = (struct eth_device *)v;
+	struct eth_dev_s *p = (struct eth_dev_s *)wp->priv;
+	int dev = p->dev;
+	unsigned int reg_base = p->reg_base;
+	unsigned long temp;
+	int i;
+
+	if (( dev < 0 ) || ( dev >= GAL_ETH_DEVS ))
+	{	/* This should never happen */
+		printf("%s: Invalid device %d\n", __FUNCTION__, dev );
+		return 0;
+	}
+
+#ifdef DEBUG
+	printf ("%s: initializing %s\n", __FUNCTION__, wp->name );
+	printf ("\nCOMM_CONTROL = %08x , COMM_CONF = %08x\n",
+		GTREGREAD(COMM_UNIT_ARBITER_CONTROL),
+		GTREGREAD(COMM_UNIT_ARBITER_CONFIGURATION_REGISTER));
+#endif
+
+	/* clear MIB counters */
+	for(i=0;i<255; i++)
+	    temp=GTREGREAD(ETHERNET0_MIB_COUNTER_BASE + reg_base +i);
+
+#ifdef CONFIG_INTEL_LXT97X
+	/* for intel LXT972 */
+
+	/* led 1: 0x1=txact
+	   led 2: 0xc=link/rxact
+	   led 3: 0x2=rxact (N/C)
+	   strch: 0,2=30 ms, enable */
+	miiphy_write(ether_port_phy_addr[p->dev], 20, 0x1c22);
+
+	/* 2.7ns port rise time */
+	/*miiphy_write(ether_port_phy_addr[p->dev], 30, 0x0<<10); */
+#else
+	/* already set up in mpsc.c */
+	/*GT_REG_WRITE(MAIN_ROUTING_REGISTER, 0x7ffe38);	/  b400 */
+
+	/* already set up in sdram_init.S... */
+	/* MPSC0, MPSC1, RMII */
+	/*GT_REG_WRITE(SERIAL_PORT_MULTIPLEX, 0x1102);		/  f010 */
+#endif
+	GT_REG_WRITE(ETHERNET_PHY_ADDRESS_REGISTER,
+	     ether_port_phy_addr[0]     |
+	    (ether_port_phy_addr[1]<<5) |
+	    (ether_port_phy_addr[2]<<10));			/* 2000 */
+
+	/* 13:12 -   10: 4x64bit burst	(cache line size = 32 bytes)
+	 *    9  -    1: RIFB - interrupt on frame boundaries only
+	 *  6:7  -   00: big endian rx and tx
+	 *  5:2  - 1111: 15 retries */
+	GT_REG_WRITE(ETHERNET0_SDMA_CONFIGURATION_REGISTER + reg_base,
+		(2<<12) | (1<<9) | (0xf<<2) );			/* 2440 */
+
+#ifndef USE_SOFTWARE_CACHE_MANAGEMENT
+	/* enable rx/tx desc/buffer cache snoop */
+	GT_REG_READ(ETHERNET_0_ADDRESS_CONTROL_LOW + dev*0x20,
+		&temp);						/* f200 */
+	temp|= (1<<6)| (1<<14)| (1<<22)| (1<<30);
+	GT_REG_WRITE(ETHERNET_0_ADDRESS_CONTROL_LOW + dev*0x20,
+		temp);
+#endif
+
+	/* 31  28 27  24 23  20 19  16
+	 *  0000   0000   0000   0000 	[0004]
+	 * 15  12 11  8   7  4   3  0
+	 *  1000   1101   0000   0000	[4d00]
+	 *    20 - 0=MII 1=RMII
+	 *    19 - 0=speed autoneg
+	 * 15:14 - framesize 1536 (GT6426x_ETH_BUF_SIZE)
+	 *    11 - no force link pass
+	 *    10 - 1=disable fctl autoneg
+	 *     8 - override prio ?? */
+	temp = 0x00004d00;
+#ifndef CONFIG_ETHER_PORT_MII
+	temp |= (1<<20);	/* RMII */
+#endif
+	/* set En */
+	GT_REG_WRITE(ETHERNET0_PORT_CONFIGURATION_EXTEND_REGISTER + reg_base,
+		     temp);				/* 2408 */
+
+	/* hardcode E1 also? */
+	/* -- according to dox, this is safer due to extra pulldowns? */
+	if (dev<2) {
+	GT_REG_WRITE(ETHERNET0_PORT_CONFIGURATION_EXTEND_REGISTER + (dev+1) * 0x400,
+		     temp);				/* 2408 */
+	}
+
+	/* wake up MAC */				 /* 2400 */
+	GT_REG_READ(ETHERNET0_PORT_CONFIGURATION_REGISTER + reg_base, &temp);
+	temp |= (1<<7);		/* enable port */
+#ifdef CONFIG_GT_USE_MAC_HASH_TABLE
+	temp |= (1<<12);	/* hash size 1/2k */
+#else
+	temp |= 1;		/* promisc */
+#endif
+	GT_REG_WRITE(ETHERNET0_PORT_CONFIGURATION_REGISTER + reg_base, temp);
+							/* 2400 */
+
+#ifdef RESTART_AUTONEG
+	check_phy_state(p);
+#endif
+
+	printf("%s: Waiting for link up..\n", wp->name);
+	temp = 10 * 1000;
+	/* wait for link back up */
+	while(!(GTREGREAD(ETHERNET0_PORT_STATUS_REGISTER + reg_base) & 8)
+			&& (--temp > 0)){
+	    udelay(1000);	/* wait 1 ms */
+	}
+	if ( temp == 0) {
+		printf("%s: Failed!\n", wp->name);
+		return (0);
+	}
+
+	printf("%s: OK!\n", wp->name);
+
+	p->tdn = 0;
+	p->rdn = 0;
+	p->eth_tx_desc[p->tdn].command_status = 0;
+
+	/* Initialize Rx Side */
+	for (temp = 0; temp < NR; temp++) {
+		p->eth_rx_desc[temp].buff_pointer = p->eth_rx_buffer[temp];
+		p->eth_rx_desc[temp].buff_size_byte_count = GT6426x_ETH_BUF_SIZE<<16;
+
+		/* GT96100 Owner */
+		p->eth_rx_desc[temp].command_status = 0x80000000;
+		p->eth_rx_desc[temp].next_desc =
+			(struct eth0_rx_desc_struct *)
+			&p->eth_rx_desc[(temp+1)%NR].buff_size_byte_count;
+	}
+
+	FLUSH_DCACHE((unsigned int)&p->eth_tx_desc[0],
+		     (unsigned int)&p->eth_tx_desc[NR]);
+	FLUSH_DCACHE((unsigned int)&p->eth_rx_desc[0],
+		     (unsigned int)&p->eth_rx_desc[NR]);
+
+	GT_REG_WRITE(ETHERNET0_CURRENT_TX_DESCRIPTOR_POINTER0 + reg_base,
+		      (unsigned int) p->eth_tx_desc);
+	GT_REG_WRITE(ETHERNET0_FIRST_RX_DESCRIPTOR_POINTER0 + reg_base,
+		      (unsigned int) p->eth_rx_desc);
+	GT_REG_WRITE(ETHERNET0_CURRENT_RX_DESCRIPTOR_POINTER0 + reg_base,
+		      (unsigned int) p->eth_rx_desc);
+
+#ifdef DEBUG
+	printf ("\nRx descriptor pointer is %08x %08x\n",
+		GTREGREAD(ETHERNET0_FIRST_RX_DESCRIPTOR_POINTER0 + reg_base),
+		GTREGREAD(ETHERNET0_CURRENT_RX_DESCRIPTOR_POINTER0 + reg_base));
+	printf ("\n\n%08x %08x\n",
+		(unsigned int)p->eth_rx_desc,p->eth_rx_desc[0].command_status);
+
+	printf ("Descriptor dump:\n");
+	printf ("cmd status: %08x\n",p->eth_rx_desc[0].command_status);
+	printf ("byte_count: %08x\n",p->eth_rx_desc[0].buff_size_byte_count);
+	printf ("buff_ptr: %08x\n",(unsigned int)p->eth_rx_desc[0].buff_pointer);
+	printf ("next_desc: %08x\n\n",(unsigned int)p->eth_rx_desc[0].next_desc);
+	printf ("%08x\n",*(unsigned int *) ((unsigned int)p->eth_rx_desc + 0x0));
+	printf ("%08x\n",*(unsigned int *) ((unsigned int)p->eth_rx_desc + 0x4));
+	printf ("%08x\n",*(unsigned int *) ((unsigned int)p->eth_rx_desc + 0x8));
+	printf ("%08x\n\n",
+		*(unsigned int *) ((unsigned int)p->eth_rx_desc + 0xc));
+#endif
+
+#ifdef DEBUG
+	gt6426x_dump_mii(bis,ether_port_phy_addr[p->dev]);
+#endif
+
+#ifdef CONFIG_GT_USE_MAC_HASH_TABLE
+	{
+		unsigned int hashtable_base;
+	    u8 *b = (u8 *)(wp->enetaddr);
+		u32 macH, macL;
+
+		/* twist the MAC up into the way the discovery wants it */
+		macH= (b[0]<<8) | b[1];
+	    macL= (b[2]<<24) | (b[3]<<16) | (b[4]<<8) | b[5];
+
+	    /* mode 0, size 0x800 */
+	    hashtable_base =initAddressTable(dev,0,1);
+
+	    if(!hashtable_base) {
+			printf("initAddressTable failed\n");
+			return 0;
+	    }
+
+	    addAddressTableEntry(dev, macH, macL, 1, 0);
+	    GT_REG_WRITE(ETHERNET0_HASH_TABLE_POINTER_REGISTER + reg_base,
+		    hashtable_base);
+	}
+#endif
+
+	/* Start Rx*/
+	GT_REG_WRITE(ETHERNET0_SDMA_COMMAND_REGISTER + reg_base, 0x00000080);
+	printf("%s: gt6426x eth device %d init success \n", wp->name, dev );
+	return 1;
+}
+
+/* enter all the galileo ethernet devs into MULTI-BOOT */
+void
+gt6426x_eth_initialize(bd_t *bis)
+{
+	struct eth_device *dev;
+	struct eth_dev_s *p;
+	int devnum, x, temp;
+	char *s, *e, buf[64];
+
+#ifdef DEBUG
+	printf( "\n%s\n", __FUNCTION );
+#endif
+
+	for (devnum = 0; devnum < GAL_ETH_DEVS; devnum++) {
+		dev = calloc(sizeof(*dev), 1);
+		if (!dev) {
+			printf( "%s: gal_enet%d allocation failure, %s\n",
+					__FUNCTION__, devnum, "eth_device structure");
+			return;
+		}
+
+		/* must be less than NAMESIZE (16) */
+		sprintf(dev->name, "gal_enet%d", devnum);
+
+#ifdef DEBUG
+		printf( "Initializing %s\n", dev->name );
+#endif
+
+		/* Extract the MAC address from the environment */
+		switch (devnum)
+		{
+			case 0: s = "ethaddr"; break;
+#if (GAL_ETH_DEVS > 1)
+			case 1: s = "eth1addr"; break;
+#endif
+#if (GAL_ETH_DEVS > 2)
+			case 2: s = "eth2addr";	break;
+#endif
+			default: /* this should never happen */
+				printf( "%s: Invalid device number %d\n",
+						__FUNCTION__, devnum );
+				return;
+		}
+
+		temp = getenv_r (s, buf, sizeof(buf));
+		s = (temp > 0) ? buf : NULL;
+
+#ifdef DEBUG
+		printf ("Setting MAC %d to %s\n", devnum, s );
+#endif
+		for (x = 0; x < 6; ++x) {
+			dev->enetaddr[x] = s ? simple_strtoul(s, &e, 16) : 0;
+			if (s)
+				s = (*e) ? e+1 : e;
+		}
+
+		dev->init = (void*)gt6426x_eth_probe;
+		dev->halt = (void*)gt6426x_eth_reset;
+		dev->send = (void*)gt6426x_eth_transmit;
+		dev->recv = (void*)gt6426x_eth_poll;
+
+		dev->priv = (void*)p = calloc( sizeof(*p), 1 );
+		if (!p)
+		{
+			printf( "%s: %s allocation failure, %s\n",
+					__FUNCTION__, dev->name, "Private Device Structure");
+			free(dev);
+			return;
+		}
+
+		p->dev = devnum;
+		p->tdn=0;
+		p->rdn=0;
+		p->reg_base = devnum * ETHERNET_PORTS_DIFFERENCE_OFFSETS;
+
+		p->eth_tx_desc =
+			(eth0_tx_desc_single *)
+			(((unsigned int) malloc(sizeof (eth0_tx_desc_single) *
+						(NT+1)) & 0xfffffff0) + 0x10);
+		if (!p)
+		{
+			printf( "%s: %s allocation failure, %s\n",
+					__FUNCTION__, dev->name, "Tx Descriptor");
+			free(dev);
+			return;
+		}
+
+		p->eth_rx_desc =
+			(eth0_rx_desc_single *)
+			(((unsigned int) malloc(sizeof (eth0_rx_desc_single) *
+						(NR+1)) & 0xfffffff0) + 0x10);
+		if (!p->eth_rx_desc)
+		{
+			printf( "%s: %s allocation failure, %s\n",
+					__FUNCTION__, dev->name, "Rx Descriptor");
+			free(dev);
+			free(p);
+			return;
+		}
+
+		p->eth_tx_buffer =
+			(char *) (((unsigned int) malloc(GT6426x_ETH_BUF_SIZE) & 0xfffffff0) + 0x10);
+		if (!p->eth_tx_buffer)
+		{
+			printf( "%s: %s allocation failure, %s\n",
+					__FUNCTION__, dev->name, "Tx Bufffer");
+			free(dev);
+			free(p);
+			free(p->eth_rx_desc);
+			return;
+		}
+
+		for (temp = 0 ; temp < NR ; temp ++) {
+			p->eth_rx_buffer[temp] =
+				(char *)
+				(((unsigned int) malloc(GT6426x_ETH_BUF_SIZE) & 0xfffffff0) + 0x10);
+			if (!p->eth_rx_buffer[temp])
+			{
+				printf( "%s: %s allocation failure, %s\n",
+						__FUNCTION__, dev->name, "Rx Buffers");
+				free(dev);
+				free(p);
+				free(p->eth_tx_buffer);
+				free(p->eth_rx_desc);
+				free(p->eth_tx_desc);
+				while (temp >= 0)
+					free(p->eth_rx_buffer[--temp]);
+				return;
+			}
+		}
+
+
+		eth_register(dev);
+	}
+}
+#endif /* CFG_CMD_NET && CONFIG_NET_MULTI */