[U-Boot-Users] [patch #5/11] FEC driver update for 8xx

30 Mar 2004

Hello
The following patch improves and fixes various things
in the FEC driver on the 8xx series of processors.
The changes are as following:
1. The new 87x and 88x series of processors have two FECs,
   and the new driver supports them both.
2. Another change in the 87x/88x series is support for
   the RMII (Reduced MII) interface. However numerous
   changes are needed to make it work since the PHYs
   are connected to the same lines. That means that
   you have to address them correctly over the MII
   interface.
3. We now correctly match the MII/RMII interface
   configuration to what the PHY reports.
The following new defines are supported:
CONFIG_ETHER_ON_FEC[12]
Enable FEC on given FEC
CONFIG_FEC[12]_PHY
Assign PHY address to FEC. If -1 means probe.
CONFIG_FEC[12]_PHY_NORXERR
The PHY does not have a RXERR line (RMII only).
CONFIG_RMII
Enable RMII mode common for any activated FECs.
For compatibility reasons the name of the first
interface remains unchanged at 'FEC ETHERNET' while
the second is name 'FEC2 ETHERNET'.
Regards
Pantelis
cpu/mpc8xx/fec.c            |  540 +++++++++++++++++++++++++++++++-------------
 include/asm-ppc/8xx_immap.h |    6 
 include/mpc8xx.h            |    6 
 3 files changed, 395 insertions(+), 157 deletions(-)
diff -ruNb u-boot-original/cpu/mpc8xx/fec.c u-boot-fec/cpu/mpc8xx/fec.c

--- u-boot-original/cpu/mpc8xx/fec.c	2004-03-30 14:37:28.695926464 +0300
+++ u-boot-fec/cpu/mpc8xx/fec.c	2004-03-30 16:39:29.881937016 +0300
@@ -29,13 +29,71 @@
#undef	ET_DEBUG
-#if (CONFIG_COMMANDS & CFG_CMD_NET) && defined(FEC_ENET)
+#if (CONFIG_COMMANDS & CFG_CMD_NET) && \
+	(defined(FEC_ENET) || defined(CONFIG_ETHER_ON_FEC1) || defined(CONFIG_ETHER_ON_FEC2))
-#ifdef CFG_DISCOVER_PHY
+/* compatibility test, if only FEC_ENET defined assume ETHER on FEC1 */
+#if defined(FEC_ENET) && !defined(CONFIG_ETHER_ON_FEC1) && !defined(CONFIG_ETHER_ON_FEC2) 
+#define CONFIG_ETHER_ON_FEC1 1
+#endif
+
+/* define WANT_MII when MII support is required */
+#if defined(CFG_DISCOVER_PHY) || defined(CONFIG_FEC1_PHY) || defined(CONFIG_FEC2_PHY)
+#define WANT_MII
+#else
+#undef WANT_MII
+#endif
+
+#if defined(WANT_MII)
 #include <miiphy.h>
-static void mii_discover_phy(void);
 #endif
+#if defined(CONFIG_RMII) && !defined(WANT_MII)
+#error RMII support is unusable without a working PHY.
+#endif
+
+#ifdef CFG_DISCOVER_PHY
+static int mii_discover_phy(struct eth_device *dev);
+#endif
+
+static struct ether_fcc_info_s
+{
+	int ether_index;
+	int fecp_offset;
+	int bd_offset;
+	int phy_addr;
+	int actual_phy_addr;
+}
+	ether_fcc_info[] = {
+#if defined(CONFIG_ETHER_ON_FEC1)
+	{
+		0,
+		offsetof(immap_t, im_cpm.cp_fec1),
+		CPM_FEC_BASE,
+#if defined(CONFIG_FEC1_PHY)
+		CONFIG_FEC1_PHY,
+#else
+		-1,	/* discover */
+#endif
+		-1,
+
+	},
+#endif
+#if defined(CONFIG_ETHER_ON_FEC2)
+	{
+		1,
+		offsetof(immap_t, im_cpm.cp_fec2),
+		CPM_FEC_BASE + 0x50,
+#if defined(CONFIG_FEC2_PHY)
+		CONFIG_FEC2_PHY,
+#else
+		-1,
+#endif
+		-1,
+	},
+#endif
+};
+
 /* Ethernet Transmit and Receive Buffers */
 #define DBUF_LENGTH  1520
@@ -47,8 +105,11 @@
 #define PKT_MINBUF_SIZE		64
 #define PKT_MAXBLR_SIZE		1520
-
-static char txbuf[DBUF_LENGTH];
+#ifdef __GNUC__
+static char txbuf[DBUF_LENGTH] __attribute__ ((aligned(8)));
+#else
+#error txbuf must be aligned.
+#endif
static uint rxIdx;	/* index of the current RX buffer */
 static uint txIdx;	/* index of the current TX buffer */
@@ -74,28 +135,47 @@
 int fec_initialize(bd_t *bis)
 {
    struct eth_device* dev;
+	struct ether_fcc_info_s *efis;
+	int             i;
-	dev = (struct eth_device*) malloc(sizeof *dev);
-	memset(dev, 0, sizeof *dev);
+	for (i = 0; i < sizeof(ether_fcc_info) / sizeof(ether_fcc_info[0]); i++) {
+		dev = malloc(sizeof(*dev));
+		if (dev == NULL)
+			hang();
+
+		memset(dev, 0, sizeof(*dev));
+
+		/* for FEC1 make sure that the name of the interface is the same
+		   as the old one for compatibility reasons */
+		if (i == 0)
    sprintf(dev->name, "FEC ETHERNET");
-	dev->iobase = 0;
-	dev->priv   = 0;
+		else
+			sprintf(dev->name, "FEC%d ETHERNET", ether_fcc_info[i].ether_index + 1);
+
+		efis = &ether_fcc_info[i];
+
+		/*
+		 * reset actual phy addr 
+		 */
+		efis->actual_phy_addr = -1;
+
+		dev->priv = efis;
    dev->init   = fec_init;
    dev->halt   = fec_halt;
    dev->send   = fec_send;
    dev->recv   = fec_recv;
eth_register(dev);
-
+	}
    return 1;
 }
static int fec_send(struct eth_device* dev, volatile void *packet, int length)
 {
    int j, rc;
-	volatile immap_t *immr = (immap_t *) CFG_IMMR;
-	volatile fec_t *fecp = &(immr->im_cpm.cp_fec);
+	struct ether_fcc_info_s *efis = dev->priv;
+	volatile fec_t *fecp = (volatile fec_t *)(CFG_IMMR + efis->fecp_offset);
/* section 16.9.23.3
     * Wait for ready
@@ -144,9 +224,9 @@
static int fec_recv(struct eth_device* dev)
 {
+	struct ether_fcc_info_s *efis = dev->priv;
+	volatile fec_t *fecp = (volatile fec_t *)(CFG_IMMR + efis->fecp_offset);
    int length;
-	volatile immap_t *immr = (immap_t *) CFG_IMMR;
-	volatile fec_t *fecp = &(immr->im_cpm.cp_fec);
for (;;) {
    /* section 16.9.23.2 */
@@ -163,8 +243,19 @@
    	__FUNCTION__,__LINE__,rtx->rxbd[rxIdx].cbd_sc);
 #endif
    } else {
-		/* Pass the packet up to the protocol layers. */
-		NetReceive(NetRxPackets[rxIdx], length - 4);
+			volatile uchar *rx = NetRxPackets[rxIdx];
+
+			length -= 4;
+
+#if (CONFIG_COMMANDS & CFG_CMD_CDP)
+			if ((rx[0] & 1) != 0 && memcmp((uchar *)rx, NetBcastAddr, 6) != 0 && memcmp((uchar *)rx, NetCDPAddr, 6) != 0)
+				rx = NULL;
+#endif
+			/*
+			 * Pass the packet up to the protocol layers. 
+			 */
+			if (rx != NULL)
+				NetReceive(rx, length);
    }
/* Give the buffer back to the FEC. */
@@ -210,13 +301,228 @@
#define	FEC_RESET_DELAY		50
-static int fec_init(struct eth_device* dev, bd_t * bd)
+#if defined(CONFIG_RMII)
+
+static inline void fec_10Mbps(struct eth_device *dev)
 {
+	struct ether_fcc_info_s *efis = dev->priv;
+	int fecidx = efis->ether_index;
-	int i;
+	if ((unsigned int)fecidx >= 2)
+		hang();
+
+	if (fecidx == 0)
+		((volatile immap_t *)CFG_IMMR)->im_cpm.cp_cptr |=  0x0000010;
+	else
+		((volatile immap_t *)CFG_IMMR)->im_cpm.cp_cptr |=  0x0000008;
+}
+
+static inline void fec_100Mbps(struct eth_device *dev)
+{
+	struct ether_fcc_info_s *efis = dev->priv;
+	int fecidx = efis->ether_index;
+
+	if ((unsigned int)fecidx >= 2)
+		hang();
+
+	if (fecidx == 0)
+		((volatile immap_t *)CFG_IMMR)->im_cpm.cp_cptr &= ~0x0000010;
+	else
+		((volatile immap_t *)CFG_IMMR)->im_cpm.cp_cptr &= ~0x0000008;
+}
+
+#endif
+
+static inline void fec_full_duplex(struct eth_device *dev)
+{
+	struct ether_fcc_info_s *efis = dev->priv;
+	volatile fec_t *fecp = (volatile fec_t *)(CFG_IMMR + efis->fecp_offset);
+
+	fecp->fec_r_cntrl &= ~FEC_RCNTRL_DRT;
+	fecp->fec_x_cntrl |=  FEC_TCNTRL_FDEN;	/* FD enable */
+}
+
+static inline void fec_half_duplex(struct eth_device *dev)
+{
+	struct ether_fcc_info_s *efis = dev->priv;
+	volatile fec_t *fecp = (volatile fec_t *)(CFG_IMMR + efis->fecp_offset);
+
+	fecp->fec_r_cntrl |=  FEC_RCNTRL_DRT;
+	fecp->fec_x_cntrl &= ~FEC_TCNTRL_FDEN;	/* FD disable */
+}
+
+static void fec_pin_init(int fecidx)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+	bd_t           *bd = gd->bd;
    volatile immap_t *immr = (immap_t *) CFG_IMMR;
-	volatile fec_t *fecp = &(immr->im_cpm.cp_fec);
+	volatile fec_t *fecp;
+
+	/*
+	 * only two FECs please 
+	 */
+	if ((unsigned int)fecidx >= 2)
+		hang();
+
+	if (fecidx == 0)
+		fecp = &immr->im_cpm.cp_fec1;
+	else
+		fecp = &immr->im_cpm.cp_fec2;
+
+	/*
+	 * Set MII speed to 2.5 MHz or slightly below.
+	 * * According to the MPC860T (Rev. D) Fast ethernet controller user
+	 * * manual (6.2.14),
+	 * * the MII management interface clock must be less than or equal
+	 * * to 2.5 MHz.
+	 * * This MDC frequency is equal to system clock / (2 * MII_SPEED).
+	 * * Then MII_SPEED = system_clock / 2 * 2,5 Mhz.
+	 */
+	fecp->fec_mii_speed = ((bd->bi_intfreq + 4999999) / 5000000) << 1;
+
+#if defined(CONFIG_DUET) && defined(WANT_MII)
+	/* use MDC for MII */
+	immr->im_ioport.iop_pdpar |=  0x0080;
+	immr->im_ioport.iop_pddir &= ~0x0080;
+#endif
+
+	if (fecidx == 0) {
+#if defined(CONFIG_ETHER_ON_FEC1)
+
+#if defined(CONFIG_DUET)	/* MPC87x/88x have got 2 FECs and different pinout */
+
+#if !defined(CONFIG_RMII)
+
+		immr->im_ioport.iop_papar |=  0xf830;
+		immr->im_ioport.iop_padir |=  0x0830;
+		immr->im_ioport.iop_padir &= ~0xf000;
+
+		immr->im_cpm.cp_pbpar     |=  0x00001001;
+		immr->im_cpm.cp_pbdir     &= ~0x00001001;
+
+		immr->im_ioport.iop_pcpar |=  0x000c;
+		immr->im_ioport.iop_pcdir &= ~0x000c;
+
+		immr->im_cpm.cp_pepar     |=  0x00000003;
+		immr->im_cpm.cp_pedir     |=  0x00000003;
+		immr->im_cpm.cp_peso      &= ~0x00000003;
+
+		immr->im_cpm.cp_cptr      &= ~0x00000100;
+
+#else
+
+#if !defined(CONFIG_FEC1_PHY_NORXERR)
+		immr->im_ioport.iop_papar |=  0x1000;
+		immr->im_ioport.iop_padir &= ~0x1000;
+#endif
+		immr->im_ioport.iop_papar |=  0xe810;
+		immr->im_ioport.iop_padir |=  0x0810;
+		immr->im_ioport.iop_padir &= ~0xe000;
+
+		immr->im_cpm.cp_pbpar     |=  0x00000001;
+		immr->im_cpm.cp_pbdir     &= ~0x00000001;
+
+		immr->im_cpm.cp_cptr      |=  0x00000100;
+		immr->im_cpm.cp_cptr      &= ~0x00000050;
+
+#endif /* !CONFIG_RMII */
+
+#elif !defined(CONFIG_ICU862) && !defined(CONFIG_IAD210)
+		/*
+		 * Configure all of port D for MII.
+		 */
+		immr->im_ioport.iop_pdpar = 0x1fff;
+
+		/*
+		 * Bits moved from Rev. D onward 
+		 */
+		if ((get_immr(0) & 0xffff) < 0x0501)
+			immr->im_ioport.iop_pddir = 0x1c58;	/* Pre rev. D */
+		else
+			immr->im_ioport.iop_pddir = 0x1fff;	/* Rev. D and later */
+#else
+		/*
+		 * Configure port A for MII.
+		 */
+
+#if defined(CONFIG_ICU862) && defined(CFG_DISCOVER_PHY)
+
+		/*
+		 * On the ICU862 board the MII-MDC pin is routed to PD8 pin
+		 * * of CPU, so for this board we need to configure Utopia and
+		 * * enable PD8 to MII-MDC function 
+		 */
+		immr->im_ioport.iop_pdpar |= 0x4080;
+#endif
+
+		/*
+		 * Has Utopia been configured? 
+		 */
+		if (immr->im_ioport.iop_pdpar & (0x8000 >> 1)) {
+			/*
+			 * YES - Use MUXED mode for UTOPIA bus.
+			 * This frees Port A for use by MII (see 862UM table 41-6).
+			 */
+			immr->im_ioport.utmode &= ~0x80;
+		} else {
+			/*
+			 * NO - set SPLIT mode for UTOPIA bus.
+			 *
+			 * This doesn't really effect UTOPIA (which isn't
+			 * enabled anyway) but just tells the 862
+			 * to use port A for MII (see 862UM table 41-6).
+			 */
+			immr->im_ioport.utmode |= 0x80;
+		}
+#endif				/* !defined(CONFIG_ICU862) */
+
+#endif	/* CONFIG_ETHER_ON_FEC1 */
+	} else if (fecidx == 1) {
+
+#if defined(CONFIG_ETHER_ON_FEC2)
+
+#if defined(CONFIG_DUET)	/* MPC87x/88x have got 2 FECs and different pinout */
+
+#if !defined(CONFIG_RMII)
+
+#warning this configuration is not tested; please report if it works
+		immr->im_cpm.cp_pepar     |=  0x0003fffc;
+		immr->im_cpm.cp_pedir     |=  0x0003fffc;
+		immr->im_cpm.cp_peso      &= ~0x000087fc;
+		immr->im_cpm.cp_peso      |=  0x00037800;
+
+		immr->im_cpm.cp_cptr      &= ~0x00000080;
+#else
+
+#if !defined(CONFIG_FEC2_PHY_NORXERR)
+		immr->im_cpm.cp_pepar     |=  0x00000010;
+		immr->im_cpm.cp_pedir     |=  0x00000010;
+		immr->im_cpm.cp_peso      &= ~0x00000010;
+#endif
+		immr->im_cpm.cp_pepar     |=  0x00039620;
+		immr->im_cpm.cp_pedir     |=  0x00039620;
+		immr->im_cpm.cp_peso      |=  0x00031000;
+		immr->im_cpm.cp_peso      &= ~0x00008620;
+
+		immr->im_cpm.cp_cptr      |=  0x00000080;
+		immr->im_cpm.cp_cptr      &= ~0x00000028;
+#endif /* CONFIG_RMII */
+
+#endif /* CONFIG_DUET */
+
+#endif /* CONFIG_ETHER_ON_FEC2 */
+
+	}
+}
+
+static int fec_init(struct eth_device *dev, bd_t * bd)
+{
+	struct ether_fcc_info_s *efis = dev->priv;
+	volatile immap_t *immr = (immap_t *) CFG_IMMR;
+	volatile fec_t *fecp = (volatile fec_t *)(CFG_IMMR + efis->fecp_offset);
+	int             i;
+	if (efis->ether_index == 0) {
 #if defined(CONFIG_FADS) /* FADS family uses FPGA (BCSR) to control PHYs */
 #if defined(CONFIG_DUET_ADS)
    *(vu_char *)BCSR5 &= ~(BCSR5_MII1_EN | BCSR5_MII1_RST);
@@ -238,6 +544,8 @@
    }
 #endif /* CONFIG_DUET_ADS */
 #endif /* CONFIG_FADS */
+	}
+
    /* Whack a reset.
     * A delay is required between a reset of the FEC block and
     * initialization of other FEC registers because the reset takes
@@ -274,10 +582,18 @@
    fecp->fec_addr_high  =	(ea[4] <<  8) | (ea[5]	    ) ;
 #undef ea
+#if (CONFIG_COMMANDS & CFG_CMD_CDP)
+	/*
+	 * Turn on multicast address hash table
+	 */
+	fecp->fec_hash_table_high = 0xffffffff;
+	fecp->fec_hash_table_low = 0xffffffff;
+#else
    /* Clear multicast address hash table
     */
    fecp->fec_hash_table_high = 0;
    fecp->fec_hash_table_low  = 0;
+#endif
/* Set maximum receive buffer size.
     */
@@ -343,82 +659,53 @@
     */
    fecp->fec_fun_code = 0x78000000;
-	/* Set MII speed to 2.5 MHz or slightly below.
-	 * According to the MPC860T (Rev. D) Fast ethernet controller user
-	 * manual (6.2.14),
-	 * the MII management interface clock must be less than or equal
-	 * to 2.5 MHz.
-	 * This MDC frequency is equal to system clock / (2 * MII_SPEED).
-	 * Then MII_SPEED = system_clock / 2 * 2,5 Mhz.
-	 */
-	fecp->fec_mii_speed = ((bd->bi_intfreq + 4999999) / 5000000) << 1;
-
-#if defined(CONFIG_DUET) /* MPC87x/88x have got 2 FECs and different pinout */
-	immr->im_ioport.iop_papar |=  0xf830;
-	immr->im_ioport.iop_padir |=  0x0830;
-	immr->im_ioport.iop_padir &= ~0xf000;
-	immr->im_cpm.cp_pbpar     |=  0x00001001;
-	immr->im_cpm.cp_pbdir     &= ~0x00001001;
-	immr->im_ioport.iop_pcpar |=  0x000c;
-	immr->im_ioport.iop_pcdir &= ~0x000c;
-	immr->im_ioport.iop_pdpar |=  0x0080;
-	immr->im_ioport.iop_pddir &= ~0x0080;
-	immr->im_cpm.cp_pepar     |=  0x00000003;
-	immr->im_cpm.cp_pedir     |=  0x00000003;
-	immr->im_cpm.cp_peso      &= ~0x00000003;
-#elif !defined(CONFIG_ICU862) && !defined(CONFIG_IAD210)
-	/* Configure all of port D for MII.
-	 */
-	immr->im_ioport.iop_pdpar = 0x1fff;
-
-	/* Bits moved from Rev. D onward */
-	if ((get_immr (0) & 0xffff) < 0x0501) {
-		immr->im_ioport.iop_pddir = 0x1c58;	/* Pre rev. D */
-	} else {
-		immr->im_ioport.iop_pddir = 0x1fff;	/* Rev. D and later */
-	}
-#else
-	/* Configure port A for MII.
+	/*
+	 * Setup the pin configuration of the FEC
    */
+	fec_pin_init(efis->ether_index);
-#if defined(CONFIG_ICU862) && defined(CFG_DISCOVER_PHY)
-
-	/* On the ICU862 board the MII-MDC pin is routed to PD8 pin
-	 * of CPU, so for this board we need to configure Utopia and
-	 * enable PD8 to MII-MDC function */
-	immr->im_ioport.iop_pdpar |= 0x4080;
-#endif
+	rxIdx = 0;
+	txIdx = 0;
-	/* Has Utopia been configured? */
-	if (immr->im_ioport.iop_pdpar & (0x8000 >> 1)) {
    	/*
-		 * YES - Use MUXED mode for UTOPIA bus.
-		 * This frees Port A for use by MII (see 862UM table 41-6).
+	 * Now enable the transmit and receive processing
    	 */
-		immr->im_ioport.utmode &= ~0x80;
-	} else {
+	fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN;
+
+	if (efis->phy_addr == -1) {
+#ifdef CFG_DISCOVER_PHY
    	/*
-		 * NO - set SPLIT mode for UTOPIA bus.
-		 *
-		 * This doesn't really effect UTOPIA (which isn't
-		 * enabled anyway) but just tells the 862
-		 * to use port A for MII (see 862UM table 41-6).
+		 * wait for the PHY to wake up after reset 
    	 */
-		immr->im_ioport.utmode |= 0x80;
+		efis->actual_phy_addr = mii_discover_phy(dev);
+#else
+		efis->actual_phy_addr = -1;
+#endif
+		if (efis->actual_phy_addr == -1) {
+			printf("Unable to discover phy!\n");
+			return 0;
    }
-#endif	/* !defined(CONFIG_ICU862) */
-
-	rxIdx = 0;
-	txIdx = 0;
+	} else
+		efis->actual_phy_addr = efis->phy_addr;
-	/* Now enable the transmit and receive processing
+#if defined(CONFIG_MII) && defined(CONFIG_RMII)
+	/*
+	 * adapt the RMII speed to the speed of the phy 
     */
-	fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN;
+	if (miiphy_speed(efis->actual_phy_addr) == _100BASET)
+		fec_100Mbps(dev);
+	else
+		fec_10Mbps(dev);
+#endif
-#ifdef CFG_DISCOVER_PHY
-	/* wait for the PHY to wake up after reset
+#if defined(CONFIG_MII)
+	/*
+	 * adapt to the half/full speed settings 
     */
-	mii_discover_phy();
+	if (miiphy_duplex(efis->actual_phy_addr) == FULL)
+		fec_full_duplex(dev);
+	else
+		fec_half_duplex(dev);
 #endif
/* And last, try to fill Rx Buffer Descriptors */
@@ -444,10 +731,7 @@
 }
 #endif
-#if defined(CFG_DISCOVER_PHY) || (CONFIG_COMMANDS & CFG_CMD_MII)
-
-static	int	phyaddr = -1;	/* didn't find a PHY yet */
-static	uint	phytype;
+#if defined(CFG_DISCOVER_PHY) || defined(CONFIG_MII) || (CONFIG_COMMANDS & CFG_CMD_MII)
/* Make MII read/write commands for the FEC.
 */
@@ -508,12 +792,13 @@
 #endif /* CFG_DISCOVER_PHY || (CONFIG_COMMANDS & CFG_CMD_MII) */
#if defined(CFG_DISCOVER_PHY)
-static void
-mii_discover_phy(void)
+static int mii_discover_phy(struct eth_device *dev)
 {
 #define MAX_PHY_PASSES 11
    uint phyno;
    int  pass;
+	uint phytype;
+	int phyaddr;
phyaddr = -1;	/* didn't find a PHY yet */
    for (pass = 1; pass <= MAX_PHY_PASSES && phyaddr < 0; ++pass) {
@@ -571,10 +856,11 @@
    if (phyaddr < 0) {
    	printf("No PHY device found.\n");
    }
+	return phyaddr;
 }
 #endif	/* CFG_DISCOVER_PHY */
-#if (CONFIG_COMMANDS & CFG_CMD_MII) && !defined(CONFIG_BITBANGMII)
+#if (defined(CONFIG_MII) || (CONFIG_COMMANDS & CFG_CMD_MII)) && !defined(CONFIG_BITBANGMII)
static int mii_init_done = 0;
@@ -585,17 +871,16 @@
  */
 void mii_init (void)
 {
-	DECLARE_GLOBAL_DATA_PTR;
-	bd_t *bd = gd->bd;
-
    volatile immap_t *immr = (immap_t *) CFG_IMMR;
    volatile fec_t *fecp = &(immr->im_cpm.cp_fec);
-	int i;
+	int i, j;
if (mii_init_done != 0) {
    	return;
    }
+	for (j = 0; j < sizeof(ether_fcc_info) / sizeof(ether_fcc_info[0]); j++) {
+
    /* Whack a reset.
     * A delay is required between a reset of the FEC block and
     * initialization of other FEC registers because the reset takes
@@ -623,76 +908,19 @@
     */
    fecp->fec_ievent = 0xffc0;
-	/* Set MII speed to 2.5 MHz or slightly below.
-	 * According to the MPC860T (Rev. D) Fast ethernet controller user
-	 * manual (6.2.14),
-	 * the MII management interface clock must be less than or equal
-	 * to 2.5 MHz.
-	 * This MDC frequency is equal to system clock / (2 * MII_SPEED).
-	 * Then MII_SPEED = system_clock / 2 * 2,5 Mhz.
-	 */
-	fecp->fec_mii_speed = ((bd->bi_intfreq + 4999999) / 5000000) << 1;
-
-#if defined(CONFIG_DUET) /* MPC87x/88x have got 2 FECs and different pinout */
-	immr->im_ioport.iop_papar |=  0xf830;
-	immr->im_ioport.iop_padir |=  0x0830;
-	immr->im_ioport.iop_padir &= ~0xf000;
-	immr->im_cpm.cp_pbpar     |=  0x00001001;
-	immr->im_cpm.cp_pbdir     &= ~0x00001001;
-	immr->im_ioport.iop_pcpar |=  0x000c;
-	immr->im_ioport.iop_pcdir &= ~0x000c;
-	immr->im_ioport.iop_pdpar |=  0x0080;
-	immr->im_ioport.iop_pddir &= ~0x0080;
-	immr->im_cpm.cp_pepar     |=  0x00000003;
-	immr->im_cpm.cp_pedir     |=  0x00000003;
-	immr->im_cpm.cp_peso      &= ~0x00000003;
-#elif !defined(CONFIG_ICU862) && !defined(CONFIG_IAD210)
-	/* Configure all of port D for MII.
-	 */
-	immr->im_ioport.iop_pdpar = 0x1fff;
-
-	/* Bits moved from Rev. D onward */
-	if ((get_immr (0) & 0xffff) < 0x0501) {
-		immr->im_ioport.iop_pddir = 0x1c58;	/* Pre rev. D */
-	} else {
-		immr->im_ioport.iop_pddir = 0x1fff;	/* Rev. D and later */
-	}
-#else
-	/* Configure port A for MII.
+		/* Setup the pin configuration of the FEC(s)
    */
+		fec_pin_init(ether_fcc_info[i].ether_index);
-#if defined(CONFIG_ICU862)
-
-	/* On the ICU862 board the MII-MDC pin is routed to PD8 pin
-	 * of CPU, so for this board we need to configure Utopia and
-	 * enable PD8 to MII-MDC function */
-	immr->im_ioport.iop_pdpar |= 0x4080;
-#endif
-
-	/* Has Utopia been configured? */
-	if (immr->im_ioport.iop_pdpar & (0x8000 >> 1)) {
-		/*
-		 * YES - Use MUXED mode for UTOPIA bus.
-		 * This frees Port A for use by MII (see 862UM table 41-6).
-		 */
-		immr->im_ioport.utmode &= ~0x80;
-	} else {
-		/*
-		 * NO - set SPLIT mode for UTOPIA bus.
-		 *
-		 * This doesn't really effect UTOPIA (which isn't
-		 * enabled anyway) but just tells the 862
-		 * to use port A for MII (see 862UM table 41-6).
-		 */
-		immr->im_ioport.utmode |= 0x80;
-	}
-#endif	/* !defined(CONFIG_ICU862) */
    /* Now enable the transmit and receive processing
     */
    fecp->fec_ecntrl = FEC_ECNTRL_PINMUX | FEC_ECNTRL_ETHER_EN;
+	}
mii_init_done = 1;
+
 }
+
 /*****************************************************************************
  * Read and write a MII PHY register, routines used by MII Utilities
  *
diff -ruNb u-boot-original/include/asm-ppc/8xx_immap.h u-boot-fec/include/asm-ppc/8xx_immap.h
--- u-boot-original/include/asm-ppc/8xx_immap.h	2004-03-30 14:37:28.780913544 +0300
+++ u-boot-fec/include/asm-ppc/8xx_immap.h	2004-03-30 15:43:35.258917232 +0300
@@ -473,7 +473,11 @@
    union	fec_lcd	fl_un;
 #define cp_fec		fl_un.fl_un_fec
 #define lcd_cmap	fl_un.fl_un_cmap
-	char	res18[0x1000];
+	char	res18[0xE00];
+
+	/* The DUET family has a second FEC here */
+	fec_t	cp_fec2;
+#define cp_fec1	cp_fec	/* consistency macro */
/* Dual Ported RAM follows.
     * There are many different formats for this memory area
diff -ruNb u-boot-original/include/mpc8xx.h u-boot-fec/include/mpc8xx.h
--- u-boot-original/include/mpc8xx.h	2004-03-30 14:37:28.755917344 +0300
+++ u-boot-fec/include/mpc8xx.h	2004-03-30 16:07:08.545065080 +0300
@@ -208,6 +208,12 @@
 #define SCCR_DFBRG10	0x00001000	/* BRGCLK division by 16		*/
 #define SCCR_DFBRG11	0x00001800	/* BRGCLK division by 64		*/
 #define SCCR_DFNL000	0x00000000	/* Division by 2 (default = minimum)	*/
+#define SCCR_DFNL001	0x00000100	/* Division by 4 	                */
+#define SCCR_DFNL010	0x00000200	/* Division by 8 	                */
+#define SCCR_DFNL011	0x00000300	/* Division by 16 	                */
+#define SCCR_DFNL100	0x00000400	/* Division by 32 	                */
+#define SCCR_DFNL101	0x00000500	/* Division by 64 	                */
+#define SCCR_DFNL110	0x00000600	/* Division by 128 	                */
 #define SCCR_DFNL111	0x00000700	/* Division by 256 (maximum)		*/
 #define SCCR_DFNH000	0x00000000	/* Division by 1 (default = minimum)	*/
 #define SCCR_DFNH110	0x000000D0	/* Division by 64 (maximum)		*/

    

[U-Boot-Users] [patch #5/11] FEC driver update for 8xx

Pantelis Antoniou