Move arch/ppc to arch/powerpc

As discussed on the list, move "arch/ppc" to "arch/powerpc" to
better match the Linux directory structure.

Please note that this patch also changes the "ppc" target in
MAKEALL to "powerpc" to match this new infrastructure. But "ppc"
is kept as an alias for now, to not break compatibility with
scripts using this name.

Signed-off-by: Stefan Roese <sr@denx.de>
Acked-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Cc: Anatolij Gustschin <agust@denx.de>

1 files changed, 572 insertions, 0 deletions

diff --git a/arch/powerpc/cpu/mpc8xx/scc.c b/arch/powerpc/cpu/mpc8xx/scc.c
new file mode 100644
index 0000000000..effb967e32
--- /dev/null
+++ b/arch/powerpc/cpu/mpc8xx/scc.c
@@ -0,0 +1,572 @@
+/*
+ * File:  scc.c
+ * Description:
+ *	Basic ET HW initialization and packet RX/TX routines
+ *
+ * NOTE  <<<IMPORTANT:  PLEASE READ>>>:
+ *     Do not cache Rx/Tx buffers!
+ */
+
+/*
+ * MPC823 <-> MC68160 Connections:
+ *
+ * Setup MPC823 to work with MC68160 Enhanced Ethernet
+ * Serial Tranceiver as follows:
+ *
+ * MPC823 Signal                MC68160  Comments
+ * ------ ------                -------  --------
+ * PA-12 ETHTX    -------->   TX       Eth. Port Transmit Data
+ * PB-18 E_TENA   -------->   TENA     Eth. Transmit Port Enable
+ * PA-5 ETHTCK    <--------   TCLK     Eth. Port Transmit Clock
+ * PA-13 ETHRX    <--------   RX       Eth. Port Receive Data
+ * PC-8 E_RENA    <--------   RENA     Eth. Receive Enable
+ * PA-6 ETHRCK    <--------   RCLK     Eth. Port Receive Clock
+ * PC-9 E_CLSN    <--------   CLSN     Eth. Port Collision Indication
+ *
+ * FADS Board Signal              MC68160  Comments
+ * -----------------              -------  --------
+ * (BCSR1) ETHEN*     -------->  CS2      Eth. Port Enable
+ * (BSCR4) TPSQEL*    -------->  TPSQEL   Twisted Pair Signal Quality Error Test Enable
+ * (BCSR4) TPFLDL*    -------->  TPFLDL   Twisted Pair Full-Duplex
+ * (BCSR4) ETHLOOP    -------->  LOOP     Eth. Port Diagnostic Loop-Back
+ *
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <commproc.h>
+#include <net.h>
+#include <command.h>
+
+#if defined(CONFIG_CMD_NET) && defined(SCC_ENET)
+
+/* Ethernet Transmit and Receive Buffers */
+#define DBUF_LENGTH  1520
+
+#define TX_BUF_CNT 2
+
+#define TOUT_LOOP 10000	/* 10 ms to have a packet sent */
+
+static char txbuf[DBUF_LENGTH];
+
+static uint rxIdx;	/* index of the current RX buffer */
+static uint txIdx;	/* index of the current TX buffer */
+
+/*
+  * SCC Ethernet Tx and Rx buffer descriptors allocated at the
+  *  immr->udata_bd address on Dual-Port RAM
+  * Provide for Double Buffering
+  */
+
+typedef volatile struct CommonBufferDescriptor {
+    cbd_t rxbd[PKTBUFSRX];	/* Rx BD */
+    cbd_t txbd[TX_BUF_CNT];	/* Tx BD */
+} RTXBD;
+
+static RTXBD *rtx;
+
+static int scc_send(struct eth_device* dev, volatile void *packet, int length);
+static int scc_recv(struct eth_device* dev);
+static int scc_init (struct eth_device* dev, bd_t * bd);
+static void scc_halt(struct eth_device* dev);
+
+int scc_initialize(bd_t *bis)
+{
+	struct eth_device* dev;
+
+	dev = (struct eth_device*) malloc(sizeof *dev);
+	memset(dev, 0, sizeof *dev);
+
+	sprintf(dev->name, "SCC ETHERNET");
+	dev->iobase = 0;
+	dev->priv   = 0;
+	dev->init   = scc_init;
+	dev->halt   = scc_halt;
+	dev->send   = scc_send;
+	dev->recv   = scc_recv;
+
+	eth_register(dev);
+
+	return 1;
+}
+
+static int scc_send(struct eth_device* dev, volatile void *packet, int length)
+{
+	int i, j=0;
+#if 0
+	volatile char *in, *out;
+#endif
+
+	/* section 16.9.23.3
+	 * Wait for ready
+	 */
+#if 0
+	while (rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY);
+	out = (char *)(rtx->txbd[txIdx].cbd_bufaddr);
+	in = packet;
+	for(i = 0; i < length; i++) {
+		*out++ = *in++;
+	}
+	rtx->txbd[txIdx].cbd_datlen = length;
+	rtx->txbd[txIdx].cbd_sc |= (BD_ENET_TX_READY | BD_ENET_TX_LAST);
+	while (rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) j++;
+
+#ifdef ET_DEBUG
+	printf("cycles: %d    status: %x\n", j, rtx->txbd[txIdx].cbd_sc);
+#endif
+	i = (rtx->txbd[txIdx++].cbd_sc & BD_ENET_TX_STATS) /* return only status bits */;
+
+	/* wrap around buffer index when necessary */
+	if (txIdx >= TX_BUF_CNT) txIdx = 0;
+#endif
+
+	while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) && (j<TOUT_LOOP)) {
+		udelay (1);	/* will also trigger Wd if needed */
+		j++;
+	}
+	if (j>=TOUT_LOOP) printf("TX not ready\n");
+	rtx->txbd[txIdx].cbd_bufaddr = (uint)packet;
+	rtx->txbd[txIdx].cbd_datlen = length;
+	rtx->txbd[txIdx].cbd_sc |= (BD_ENET_TX_READY | BD_ENET_TX_LAST |BD_ENET_TX_WRAP);
+	while ((rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_READY) && (j<TOUT_LOOP)) {
+		udelay (1);	/* will also trigger Wd if needed */
+		j++;
+	}
+	if (j>=TOUT_LOOP) printf("TX timeout\n");
+#ifdef ET_DEBUG
+	printf("cycles: %d    status: %x\n", j, rtx->txbd[txIdx].cbd_sc);
+#endif
+	i = (rtx->txbd[txIdx].cbd_sc & BD_ENET_TX_STATS) /* return only status bits */;
+	return i;
+}
+
+static int scc_recv (struct eth_device *dev)
+{
+	int length;
+
+	for (;;) {
+		/* section 16.9.23.2 */
+		if (rtx->rxbd[rxIdx].cbd_sc & BD_ENET_RX_EMPTY) {
+			length = -1;
+			break;	/* nothing received - leave for() loop */
+		}
+
+		length = rtx->rxbd[rxIdx].cbd_datlen;
+
+		if (rtx->rxbd[rxIdx].cbd_sc & 0x003f) {
+#ifdef ET_DEBUG
+			printf ("err: %x\n", rtx->rxbd[rxIdx].cbd_sc);
+#endif
+		} else {
+			/* Pass the packet up to the protocol layers. */
+			NetReceive (NetRxPackets[rxIdx], length - 4);
+		}
+
+
+		/* Give the buffer back to the SCC. */
+		rtx->rxbd[rxIdx].cbd_datlen = 0;
+
+		/* wrap around buffer index when necessary */
+		if ((rxIdx + 1) >= PKTBUFSRX) {
+			rtx->rxbd[PKTBUFSRX - 1].cbd_sc =
+				(BD_ENET_RX_WRAP | BD_ENET_RX_EMPTY);
+			rxIdx = 0;
+		} else {
+			rtx->rxbd[rxIdx].cbd_sc = BD_ENET_RX_EMPTY;
+			rxIdx++;
+		}
+	}
+	return length;
+}
+
+/**************************************************************
+  *
+  * SCC Ethernet Initialization Routine
+  *
+  *************************************************************/
+
+static int scc_init (struct eth_device *dev, bd_t * bis)
+{
+
+	int i;
+	scc_enet_t *pram_ptr;
+
+	volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
+
+#if defined(CONFIG_LWMON)
+	reset_phy();
+#endif
+
+#ifdef CONFIG_FADS
+#if defined(CONFIG_MPC86xADS) || defined(CONFIG_MPC860T)
+	/* The MPC86xADS/FADS860T don't use the MODEM_EN or DATA_VOICE signals. */
+	*((uint *) BCSR4) &= ~BCSR4_ETHLOOP;
+	*((uint *) BCSR4) |= BCSR4_TFPLDL | BCSR4_TPSQEL;
+	*((uint *) BCSR1) &= ~BCSR1_ETHEN;
+#else
+	*((uint *) BCSR4) &= ~(BCSR4_ETHLOOP | BCSR4_MODEM_EN);
+	*((uint *) BCSR4) |= BCSR4_TFPLDL | BCSR4_TPSQEL | BCSR4_DATA_VOICE;
+	*((uint *) BCSR1) &= ~BCSR1_ETHEN;
+#endif
+#endif
+
+	pram_ptr = (scc_enet_t *) & (immr->im_cpm.cp_dparam[PROFF_ENET]);
+
+	rxIdx = 0;
+	txIdx = 0;
+
+	if (!rtx) {
+#ifdef CONFIG_SYS_ALLOC_DPRAM
+		rtx = (RTXBD *) (immr->im_cpm.cp_dpmem +
+				 dpram_alloc_align (sizeof (RTXBD), 8));
+#else
+		rtx = (RTXBD *) (immr->im_cpm.cp_dpmem + CPM_SCC_BASE);
+#endif
+	}
+
+#if (defined(PA_ENET_RXD) && defined(PA_ENET_TXD))
+	/* Configure port A pins for Txd and Rxd.
+	 */
+	immr->im_ioport.iop_papar |= (PA_ENET_RXD | PA_ENET_TXD);
+	immr->im_ioport.iop_padir &= ~(PA_ENET_RXD | PA_ENET_TXD);
+	immr->im_ioport.iop_paodr &= ~PA_ENET_TXD;
+#elif (defined(PB_ENET_RXD) && defined(PB_ENET_TXD))
+	/* Configure port B pins for Txd and Rxd.
+	 */
+	immr->im_cpm.cp_pbpar |= (PB_ENET_RXD | PB_ENET_TXD);
+	immr->im_cpm.cp_pbdir &= ~(PB_ENET_RXD | PB_ENET_TXD);
+	immr->im_cpm.cp_pbodr &= ~PB_ENET_TXD;
+#else
+#error Configuration Error: exactly ONE of PA_ENET_[RT]XD, PB_ENET_[RT]XD must be defined
+#endif
+
+#if defined(PC_ENET_LBK)
+	/* Configure port C pins to disable External Loopback
+	 */
+	immr->im_ioport.iop_pcpar &= ~PC_ENET_LBK;
+	immr->im_ioport.iop_pcdir |= PC_ENET_LBK;
+	immr->im_ioport.iop_pcso &= ~PC_ENET_LBK;
+	immr->im_ioport.iop_pcdat &= ~PC_ENET_LBK;	/* Disable Loopback */
+#endif /* PC_ENET_LBK */
+
+	/* Configure port C pins to enable CLSN and RENA.
+	 */
+	immr->im_ioport.iop_pcpar &= ~(PC_ENET_CLSN | PC_ENET_RENA);
+	immr->im_ioport.iop_pcdir &= ~(PC_ENET_CLSN | PC_ENET_RENA);
+	immr->im_ioport.iop_pcso |= (PC_ENET_CLSN | PC_ENET_RENA);
+
+	/* Configure port A for TCLK and RCLK.
+	 */
+	immr->im_ioport.iop_papar |= (PA_ENET_TCLK | PA_ENET_RCLK);
+	immr->im_ioport.iop_padir &= ~(PA_ENET_TCLK | PA_ENET_RCLK);
+
+	/*
+	 * Configure Serial Interface clock routing -- see section 16.7.5.3
+	 * First, clear all SCC bits to zero, then set the ones we want.
+	 */
+
+	immr->im_cpm.cp_sicr &= ~SICR_ENET_MASK;
+	immr->im_cpm.cp_sicr |= SICR_ENET_CLKRT;
+
+
+	/*
+	 * Initialize SDCR -- see section 16.9.23.7
+	 * SDMA configuration register
+	 */
+	immr->im_siu_conf.sc_sdcr = 0x01;
+
+
+	/*
+	 * Setup SCC Ethernet Parameter RAM
+	 */
+
+	pram_ptr->sen_genscc.scc_rfcr = 0x18;	/* Normal Operation and Mot byte ordering */
+	pram_ptr->sen_genscc.scc_tfcr = 0x18;	/* Mot byte ordering, Normal access */
+
+	pram_ptr->sen_genscc.scc_mrblr = DBUF_LENGTH;	/* max. ET package len 1520 */
+
+	pram_ptr->sen_genscc.scc_rbase = (unsigned int) (&rtx->rxbd[0]);	/* Set RXBD tbl start at Dual Port */
+	pram_ptr->sen_genscc.scc_tbase = (unsigned int) (&rtx->txbd[0]);	/* Set TXBD tbl start at Dual Port */
+
+	/*
+	 * Setup Receiver Buffer Descriptors (13.14.24.18)
+	 * Settings:
+	 *     Empty, Wrap
+	 */
+
+	for (i = 0; i < PKTBUFSRX; i++) {
+		rtx->rxbd[i].cbd_sc = BD_ENET_RX_EMPTY;
+		rtx->rxbd[i].cbd_datlen = 0;	/* Reset */
+		rtx->rxbd[i].cbd_bufaddr = (uint) NetRxPackets[i];
+	}
+
+	rtx->rxbd[PKTBUFSRX - 1].cbd_sc |= BD_ENET_RX_WRAP;
+
+	/*
+	 * Setup Ethernet Transmitter Buffer Descriptors (13.14.24.19)
+	 * Settings:
+	 *    Add PADs to Short FRAMES, Wrap, Last, Tx CRC
+	 */
+
+	for (i = 0; i < TX_BUF_CNT; i++) {
+		rtx->txbd[i].cbd_sc =
+			(BD_ENET_TX_PAD | BD_ENET_TX_LAST | BD_ENET_TX_TC);
+		rtx->txbd[i].cbd_datlen = 0;	/* Reset */
+		rtx->txbd[i].cbd_bufaddr = (uint) (&txbuf[0]);
+	}
+
+	rtx->txbd[TX_BUF_CNT - 1].cbd_sc |= BD_ENET_TX_WRAP;
+
+	/*
+	 * Enter Command:  Initialize Rx Params for SCC
+	 */
+
+	do {			/* Spin until ready to issue command    */
+		__asm__ ("eieio");
+	} while (immr->im_cpm.cp_cpcr & CPM_CR_FLG);
+	/* Issue command */
+	immr->im_cpm.cp_cpcr =
+		((CPM_CR_INIT_RX << 8) | (CPM_CR_ENET << 4) | CPM_CR_FLG);
+	do {			/* Spin until command processed         */
+		__asm__ ("eieio");
+	} while (immr->im_cpm.cp_cpcr & CPM_CR_FLG);
+
+	/*
+	 * Ethernet Specific Parameter RAM
+	 *     see table 13-16, pg. 660,
+	 *     pg. 681 (example with suggested settings)
+	 */
+
+	pram_ptr->sen_cpres = ~(0x0);	/* Preset CRC */
+	pram_ptr->sen_cmask = 0xdebb20e3;	/* Constant Mask for CRC */
+	pram_ptr->sen_crcec = 0x0;	/* Error Counter CRC (unused) */
+	pram_ptr->sen_alec = 0x0;	/* Alignment Error Counter (unused) */
+	pram_ptr->sen_disfc = 0x0;	/* Discard Frame Counter (unused) */
+	pram_ptr->sen_pads = 0x8888;	/* Short Frame PAD Characters */
+
+	pram_ptr->sen_retlim = 15;	/* Retry Limit Threshold */
+	pram_ptr->sen_maxflr = 1518;	/* MAX Frame Length Register */
+	pram_ptr->sen_minflr = 64;	/* MIN Frame Length Register */
+
+	pram_ptr->sen_maxd1 = DBUF_LENGTH;	/* MAX DMA1 Length Register */
+	pram_ptr->sen_maxd2 = DBUF_LENGTH;	/* MAX DMA2 Length Register */
+
+	pram_ptr->sen_gaddr1 = 0x0;	/* Group Address Filter 1 (unused) */
+	pram_ptr->sen_gaddr2 = 0x0;	/* Group Address Filter 2 (unused) */
+	pram_ptr->sen_gaddr3 = 0x0;	/* Group Address Filter 3 (unused) */
+	pram_ptr->sen_gaddr4 = 0x0;	/* Group Address Filter 4 (unused) */
+
+#define ea eth_get_dev()->enetaddr
+	pram_ptr->sen_paddrh = (ea[5] << 8) + ea[4];
+	pram_ptr->sen_paddrm = (ea[3] << 8) + ea[2];
+	pram_ptr->sen_paddrl = (ea[1] << 8) + ea[0];
+#undef ea
+
+	pram_ptr->sen_pper = 0x0;	/* Persistence (unused) */
+	pram_ptr->sen_iaddr1 = 0x0;	/* Individual Address Filter 1 (unused) */
+	pram_ptr->sen_iaddr2 = 0x0;	/* Individual Address Filter 2 (unused) */
+	pram_ptr->sen_iaddr3 = 0x0;	/* Individual Address Filter 3 (unused) */
+	pram_ptr->sen_iaddr4 = 0x0;	/* Individual Address Filter 4 (unused) */
+	pram_ptr->sen_taddrh = 0x0;	/* Tmp Address (MSB) (unused) */
+	pram_ptr->sen_taddrm = 0x0;	/* Tmp Address (unused) */
+	pram_ptr->sen_taddrl = 0x0;	/* Tmp Address (LSB) (unused) */
+
+	/*
+	 * Enter Command:  Initialize Tx Params for SCC
+	 */
+
+	do {			/* Spin until ready to issue command    */
+		__asm__ ("eieio");
+	} while (immr->im_cpm.cp_cpcr & CPM_CR_FLG);
+	/* Issue command */
+	immr->im_cpm.cp_cpcr =
+		((CPM_CR_INIT_TX << 8) | (CPM_CR_ENET << 4) | CPM_CR_FLG);
+	do {			/* Spin until command processed         */
+		__asm__ ("eieio");
+	} while (immr->im_cpm.cp_cpcr & CPM_CR_FLG);
+
+	/*
+	 * Mask all Events in SCCM - we use polling mode
+	 */
+	immr->im_cpm.cp_scc[SCC_ENET].scc_sccm = 0;
+
+	/*
+	 * Clear Events in SCCE -- Clear bits by writing 1's
+	 */
+
+	immr->im_cpm.cp_scc[SCC_ENET].scc_scce = ~(0x0);
+
+
+	/*
+	 * Initialize GSMR High 32-Bits
+	 * Settings:  Normal Mode
+	 */
+
+	immr->im_cpm.cp_scc[SCC_ENET].scc_gsmrh = 0;
+
+	/*
+	 * Initialize GSMR Low 32-Bits, but do not Enable Transmit/Receive
+	 * Settings:
+	 *     TCI = Invert
+	 *     TPL =  48 bits
+	 *     TPP = Repeating 10's
+	 *     MODE = Ethernet
+	 */
+
+	immr->im_cpm.cp_scc[SCC_ENET].scc_gsmrl = (SCC_GSMRL_TCI |
+						   SCC_GSMRL_TPL_48 |
+						   SCC_GSMRL_TPP_10 |
+						   SCC_GSMRL_MODE_ENET);
+
+	/*
+	 * Initialize the DSR -- see section 13.14.4 (pg. 513) v0.4
+	 */
+
+	immr->im_cpm.cp_scc[SCC_ENET].scc_dsr = 0xd555;
+
+	/*
+	 * Initialize the PSMR
+	 * Settings:
+	 *  CRC = 32-Bit CCITT
+	 *  NIB = Begin searching for SFD 22 bits after RENA
+	 *  FDE = Full Duplex Enable
+	 *  LPB = Loopback Enable (Needed when FDE is set)
+	 *  BRO = Reject broadcast packets
+	 *  PROMISCOUS = Catch all packets regardless of dest. MAC adress
+	 */
+	immr->im_cpm.cp_scc[SCC_ENET].scc_psmr = SCC_PSMR_ENCRC |
+		SCC_PSMR_NIB22 |
+#if defined(CONFIG_SCC_ENET_FULL_DUPLEX)
+		SCC_PSMR_FDE | SCC_PSMR_LPB |
+#endif
+#if defined(CONFIG_SCC_ENET_NO_BROADCAST)
+		SCC_PSMR_BRO |
+#endif
+#if defined(CONFIG_SCC_ENET_PROMISCOUS)
+		SCC_PSMR_PRO |
+#endif
+		0;
+
+	/*
+	 * Configure Ethernet TENA Signal
+	 */
+
+#if (defined(PC_ENET_TENA) && !defined(PB_ENET_TENA))
+	immr->im_ioport.iop_pcpar |= PC_ENET_TENA;
+	immr->im_ioport.iop_pcdir &= ~PC_ENET_TENA;
+#elif (defined(PB_ENET_TENA) && !defined(PC_ENET_TENA))
+	immr->im_cpm.cp_pbpar |= PB_ENET_TENA;
+	immr->im_cpm.cp_pbdir |= PB_ENET_TENA;
+#else
+#error Configuration Error: exactly ONE of PB_ENET_TENA, PC_ENET_TENA must be defined
+#endif
+
+#if defined(CONFIG_ADS) && defined(CONFIG_MPC860)
+	/*
+	 * Port C is used to control the PHY,MC68160.
+	 */
+	immr->im_ioport.iop_pcdir |=
+		(PC_ENET_ETHLOOP | PC_ENET_TPFLDL | PC_ENET_TPSQEL);
+
+	immr->im_ioport.iop_pcdat |= PC_ENET_TPFLDL;
+	immr->im_ioport.iop_pcdat &= ~(PC_ENET_ETHLOOP | PC_ENET_TPSQEL);
+	*((uint *) BCSR1) &= ~BCSR1_ETHEN;
+#endif /* MPC860ADS */
+
+#if defined(CONFIG_AMX860)
+	/*
+	 * Port B is used to control the PHY,MC68160.
+	 */
+	immr->im_cpm.cp_pbdir |=
+		(PB_ENET_ETHLOOP | PB_ENET_TPFLDL | PB_ENET_TPSQEL);
+
+	immr->im_cpm.cp_pbdat |= PB_ENET_TPFLDL;
+	immr->im_cpm.cp_pbdat &= ~(PB_ENET_ETHLOOP | PB_ENET_TPSQEL);
+
+	immr->im_ioport.iop_pddir |= PD_ENET_ETH_EN;
+	immr->im_ioport.iop_pddat &= ~PD_ENET_ETH_EN;
+#endif /* AMX860 */
+
+#ifdef CONFIG_RPXCLASSIC
+	*((uchar *) BCSR0) &= ~BCSR0_ETHLPBK;
+	*((uchar *) BCSR0) |= (BCSR0_ETHEN | BCSR0_COLTEST | BCSR0_FULLDPLX);
+#endif
+
+#ifdef CONFIG_RPXLITE
+	*((uchar *) BCSR0) |= BCSR0_ETHEN;
+#endif
+
+#if defined(CONFIG_QS860T)
+	/*
+	 * PB27=FDE-, set output low for full duplex
+	 * PB26=Link Test Enable, normally high output
+	 */
+	immr->im_cpm.cp_pbdir |= 0x00000030;
+	immr->im_cpm.cp_pbdat |= 0x00000020;
+	immr->im_cpm.cp_pbdat &= ~0x00000010;
+#endif /* QS860T */
+
+#ifdef CONFIG_MBX
+	board_ether_init ();
+#endif
+
+#if defined(CONFIG_NETVIA)
+#if defined(PA_ENET_PDN)
+	immr->im_ioport.iop_papar &= ~PA_ENET_PDN;
+	immr->im_ioport.iop_padir |= PA_ENET_PDN;
+	immr->im_ioport.iop_padat |= PA_ENET_PDN;
+#elif defined(PB_ENET_PDN)
+	immr->im_cpm.cp_pbpar &= ~PB_ENET_PDN;
+	immr->im_cpm.cp_pbdir |= PB_ENET_PDN;
+	immr->im_cpm.cp_pbdat |= PB_ENET_PDN;
+#elif defined(PC_ENET_PDN)
+	immr->im_ioport.iop_pcpar &= ~PC_ENET_PDN;
+	immr->im_ioport.iop_pcdir |= PC_ENET_PDN;
+	immr->im_ioport.iop_pcdat |= PC_ENET_PDN;
+#elif defined(PD_ENET_PDN)
+	immr->im_ioport.iop_pdpar &= ~PD_ENET_PDN;
+	immr->im_ioport.iop_pddir |= PD_ENET_PDN;
+	immr->im_ioport.iop_pddat |= PD_ENET_PDN;
+#endif
+#endif
+
+	/*
+	 * Set the ENT/ENR bits in the GSMR Low -- Enable Transmit/Receive
+	 */
+
+	immr->im_cpm.cp_scc[SCC_ENET].scc_gsmrl |=
+		(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
+
+	/*
+	 * Work around transmit problem with first eth packet
+	 */
+#if defined (CONFIG_FADS)
+	udelay (10000);		/* wait 10 ms */
+#elif defined (CONFIG_AMX860) || defined(CONFIG_RPXCLASSIC)
+	udelay (100000);	/* wait 100 ms */
+#endif
+
+	return 1;
+}
+
+
+static void scc_halt (struct eth_device *dev)
+{
+	volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
+
+	immr->im_cpm.cp_scc[SCC_ENET].scc_gsmrl &=
+		~(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
+
+	immr->im_ioport.iop_pcso  &=  ~(PC_ENET_CLSN | PC_ENET_RENA);
+}
+
+#if 0
+void restart (void)
+{
+	volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR;
+
+	immr->im_cpm.cp_scc[SCC_ENET].scc_gsmrl |=
+		(SCC_GSMRL_ENR | SCC_GSMRL_ENT);
+}
+#endif
+#endif