Initial revision
diff --git a/board/siemens/IAD210/atm.c b/board/siemens/IAD210/atm.c
new file mode 100644
index 0000000..c77e359
--- /dev/null
+++ b/board/siemens/IAD210/atm.c
@@ -0,0 +1,653 @@
+
+#include <common.h>
+#include <mpc8xx.h>
+#include <commproc.h>
+
+#include "atm.h"
+#include <linux/stddef.h>
+
+#define SYNC __asm__("sync")
+#define ALIGN(p, a) ((char *)(((uint32)(p)+(a)-1) & ~((uint32)(a)-1)))
+
+#define FALSE 1
+#define TRUE 0
+#define OK 0
+#define ERROR -1
+
+struct atm_connection_t g_conn[NUM_CONNECTIONS] =
+{
+ { NULL, 10, NULL, 10, NULL, NULL, NULL, NULL }, /* OAM */
+};
+
+struct atm_driver_t g_atm =
+{
+ FALSE, /* loaded */
+ FALSE, /* started */
+ NULL, /* csram */
+ 0, /* csram_size */
+ NULL, /* am_top */
+ NULL, /* ap_top */
+ NULL, /* int_reload_ptr */
+ NULL, /* int_serv_ptr */
+ NULL, /* rbd_base_ptr */
+ NULL, /* tbd_base_ptr */
+ 0 /* linerate */
+};
+
+char csram[1024]; /* more than enough for doing nothing*/
+
+int atmLoad(void);
+void atmUnload(void);
+int atmMemInit(void);
+void atmIntInit(void);
+void atmApcInit(void);
+void atmAmtInit(void);
+void atmCpmInit(void);
+void atmUtpInit(void);
+
+/*****************************************************************************
+ *
+ * FUNCTION NAME: atmLoad
+ *
+ * DESCRIPTION: Basic ATM initialization.
+ *
+ * PARAMETERS: none
+ *
+ * RETURNS: OK or ERROR
+ *
+ ****************************************************************************/
+int atmLoad()
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile cpmtimer8xx_t *timers = &immap->im_cpmtimer;
+ volatile iop8xx_t *iop = &immap->im_ioport;
+
+ timers->cpmt_tgcr &= 0x0FFF; SYNC; /* Disable Timer 4 */
+ immap->im_cpm.cp_scc[4].scc_gsmrl = 0x0; SYNC; /* Disable SCC4 */
+ iop->iop_pdpar &= 0x3FFF; SYNC; /* Disable SAR and UTOPIA */
+
+ if ( atmMemInit() != OK ) return ERROR;
+
+ atmIntInit();
+ atmApcInit();
+ atmAmtInit();
+ atmCpmInit();
+ atmUtpInit();
+
+ g_atm.loaded = TRUE;
+
+ return OK;
+}
+
+/*****************************************************************************
+ *
+ * FUNCTION NAME: atmUnload
+ *
+ * DESCRIPTION: Disables ATM and UTOPIA.
+ *
+ * PARAMETERS: none
+ *
+ * RETURNS: void
+ *
+ ****************************************************************************/
+void atmUnload()
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile cpmtimer8xx_t *timers = &immap->im_cpmtimer;
+ volatile iop8xx_t *iop = &immap->im_ioport;
+
+ timers->cpmt_tgcr &= 0x0FFF; SYNC; /* Disable Timer 4 */
+ immap->im_cpm.cp_scc[4].scc_gsmrl = 0x0; SYNC; /* Disable SCC4 */
+ iop->iop_pdpar &= 0x3FFF; SYNC; /* Disable SAR and UTOPIA */
+ g_atm.loaded = FALSE;
+}
+
+/*****************************************************************************
+ *
+ * FUNCTION NAME: atmMemInit
+ *
+ * DESCRIPTION:
+ *
+ * The ATM driver uses the following resources:
+ *
+ * A. Memory in DPRAM to hold
+ *
+ * 1/ CT = Connection Table ( RCT & TCT )
+ * 2/ TCTE = Transmit Connection Table Extension
+ * 3/ MPHYPT = Multi-PHY Pointing Table
+ * 4/ APCP = APC Parameter Table
+ * 5/ APCT_PRIO_1 = APC Table ( priority 1 for AAL1/2 )
+ * 6/ APCT_PRIO_2 = APC Table ( priority 2 for VBR )
+ * 7/ APCT_PRIO_3 = APC Table ( priority 3 for UBR )
+ * 8/ TQ = Transmit Queue
+ * 9/ AM = Address Matching Table
+ * 10/ AP = Address Pointing Table
+ *
+ * B. Memory in cache safe RAM to hold
+ *
+ * 1/ INT = Interrupt Queue
+ * 2/ RBD = Receive Buffer Descriptors
+ * 3/ TBD = Transmit Buffer Descriptors
+ *
+ * This function
+ * 1. clears the ATM DPRAM area,
+ * 2. Allocates and clears cache safe memory,
+ * 3. Initializes 'g_conn'.
+ *
+ * PARAMETERS: none
+ *
+ * RETURNS: OK or ERROR
+ *
+ ****************************************************************************/
+int atmMemInit()
+{
+ int i;
+ unsigned immr = CFG_IMMR;
+ int total_num_rbd = 0;
+ int total_num_tbd = 0;
+
+ memset((char *)CFG_IMMR + 0x2000 + ATM_DPRAM_BEGIN, 0x00, ATM_DPRAM_SIZE);
+
+ g_atm.csram_size = NUM_INT_ENTRIES * SIZE_OF_INT_ENTRY;
+
+ for ( i = 0; i < NUM_CONNECTIONS; ++i ) {
+ total_num_rbd += g_conn[i].num_rbd;
+ total_num_tbd += g_conn[i].num_tbd;
+ }
+
+ g_atm.csram_size += total_num_rbd * SIZE_OF_RBD + total_num_tbd * SIZE_OF_TBD + 4;
+
+ g_atm.csram = &csram[0];
+ memset(&(g_atm.csram), 0x00, g_atm.csram_size);
+
+ g_atm.int_reload_ptr = (uint32 *)ALIGN(g_atm.csram, 4);
+ g_atm.rbd_base_ptr = (struct atm_bd_t *)(g_atm.int_reload_ptr + NUM_INT_ENTRIES);
+ g_atm.tbd_base_ptr = (struct atm_bd_t *)(g_atm.rbd_base_ptr + total_num_rbd);
+
+ g_conn[0].rbd_ptr = g_atm.rbd_base_ptr;
+ g_conn[0].tbd_ptr = g_atm.tbd_base_ptr;
+ g_conn[0].ct_ptr = CT_PTR(immr);
+ g_conn[0].tcte_ptr = TCTE_PTR(immr);
+
+ return OK;
+}
+
+/*****************************************************************************
+ *
+ * FUNCTION NAME: atmIntInit
+ *
+ * DESCRIPTION:
+ *
+ * Initialization of the MPC860 ESAR Interrupt Queue.
+ * This function
+ * - clears all entries in the INT,
+ * - sets the WRAP bit of the last INT entry,
+ * - initializes the 'int_serv_ptr' attribuut of the AtmDriver structure
+ * to the first INT entry.
+ *
+ * PARAMETERS: none
+ *
+ * RETURNS: void
+ *
+ * REMARKS:
+ *
+ * - The INT resides in external cache safe memory.
+ * - The base address of the INT is stored in g_atm.int_reload_ptr.
+ * - The number of entries in the INT is given by NUM_INT_ENTRIES.
+ * - The INTBASE field in SAR Parameter RAM is set by atmCpmInit().
+ *
+ ****************************************************************************/
+void atmIntInit()
+{
+ int i;
+ for ( i = 0; i < NUM_INT_ENTRIES - 1; ++i) g_atm.int_reload_ptr[i] = 0;
+ g_atm.int_reload_ptr[i] = INT_WRAP;
+ g_atm.int_serv_ptr = g_atm.int_reload_ptr;
+}
+
+/*****************************************************************************
+ *
+ * FUNCTION NAME: atmApcInit
+ *
+ * DESCRIPTION:
+ *
+ * This function initializes the following ATM Pace Controller related
+ * data structures:
+ *
+ * - 1 MPHY Pointing Table (contains only one entry)
+ * - 3 APC Parameter Tables (one PHY with 3 priorities)
+ * - 3 APC Tables (one table for each priority)
+ * - 1 Transmit Queue (one transmit queue per PHY)
+ *
+ * PARAMETERS: none
+ *
+ * RETURNS: void
+ *
+ ****************************************************************************/
+void atmApcInit()
+{
+ int i;
+ /* unsigned immr = CFG_IMMR; */
+ uint16 * mphypt_ptr = MPHYPT_PTR(CFG_IMMR);
+ struct apc_params_t * apcp_ptr = APCP_PTR(CFG_IMMR);
+ uint16 * apct_prio1_ptr = APCT1_PTR(CFG_IMMR);
+ uint16 * tq_ptr = TQ_PTR(CFG_IMMR);
+ /***************************************************/
+ /* Initialize MPHY Pointing Table (only one entry) */
+ /***************************************************/
+ *mphypt_ptr = APCP_BASE;
+
+ /********************************************/
+ /* Initialize APC parameters for priority 1 */
+ /********************************************/
+ apcp_ptr->apct_base1 = APCT_PRIO_1_BASE;
+ apcp_ptr->apct_end1 = APCT_PRIO_1_BASE + NUM_APCT_PRIO_1_ENTRIES * 2;
+ apcp_ptr->apct_ptr1 = APCT_PRIO_1_BASE;
+ apcp_ptr->apct_sptr1 = APCT_PRIO_1_BASE;
+ apcp_ptr->etqbase = TQ_BASE;
+ apcp_ptr->etqend = TQ_BASE + ( NUM_TQ_ENTRIES - 1 ) * 2;
+ apcp_ptr->etqaptr = TQ_BASE;
+ apcp_ptr->etqtptr = TQ_BASE;
+ apcp_ptr->apc_mi = 8;
+ apcp_ptr->ncits = 0x0100; /* NCITS = 1 */
+ apcp_ptr->apcnt = 0;
+ apcp_ptr->reserved1 = 0;
+ apcp_ptr->eapcst = 0x2009; /* LAST, ESAR, MPHY */
+ apcp_ptr->ptp_counter = 0;
+ apcp_ptr->ptp_txch = 0;
+ apcp_ptr->reserved2 = 0;
+
+
+ /***************************************************/
+ /* Initialize APC Tables with empty slots (0xFFFF) */
+ /***************************************************/
+ for ( i = 0; i < NUM_APCT_PRIO_1_ENTRIES; ++i ) *(apct_prio1_ptr++) = 0xFFFF;
+
+ /************************/
+ /* Clear Transmit Queue */
+ /************************/
+ for ( i = 0; i < NUM_TQ_ENTRIES; ++i ) *(tq_ptr++) = 0;
+}
+
+/*****************************************************************************
+ *
+ * FUNCTION NAME: atmAmtInit
+ *
+ * DESCRIPTION:
+ *
+ * This function clears the first entry in the Address Matching Table and
+ * lets the first entry in the Address Pointing table point to the first
+ * entry in the TCT table (i.e. the raw cell channel).
+ *
+ * PARAMETERS: none
+ *
+ * RETURNS: void
+ *
+ * REMARKS:
+ *
+ * The values for the AMBASE, AMEND and APBASE registers in SAR parameter
+ * RAM are initialized by atmCpmInit().
+ *
+ ****************************************************************************/
+void atmAmtInit()
+{
+ unsigned immr = CFG_IMMR;
+
+ g_atm.am_top = AM_PTR(immr);
+ g_atm.ap_top = AP_PTR(immr);
+
+ *(g_atm.ap_top--) = CT_BASE;
+ *(g_atm.am_top--) = 0;
+}
+
+/*****************************************************************************
+ *
+ * FUNCTION NAME: atmCpmInit
+ *
+ * DESCRIPTION:
+ *
+ * This function initializes the Utopia Interface Parameter RAM Map
+ * (SCC4, ATM Protocol) of the Communication Processor Modudule.
+ *
+ * PARAMETERS: none
+ *
+ * RETURNS: void
+ *
+ ****************************************************************************/
+void atmCpmInit()
+{
+ unsigned immr = CFG_IMMR;
+
+ memset((char *)immr + 0x3F00, 0x00, 0xC0);
+
+ /*-----------------------------------------------------------------*/
+ /* RBDBASE - Receive buffer descriptors base address */
+ /* The RBDs reside in cache safe external memory. */
+ /*-----------------------------------------------------------------*/
+ *RBDBASE(immr) = (uint32)g_atm.rbd_base_ptr;
+
+ /*-----------------------------------------------------------------*/
+ /* SRFCR - SAR receive function code */
+ /* 0-2 rsvd = 000 */
+ /* 3-4 BO = 11 Byte ordering (big endian). */
+ /* 5-7 FC = 000 Value driven on the address type signals AT[1-3] */
+ /* when the SDMA channel accesses memory. */
+ /*-----------------------------------------------------------------*/
+ *SRFCR(immr) = 0x18;
+
+ /*-----------------------------------------------------------------*/
+ /* SRSTATE - SAR receive status */
+ /* 0 EXT = 0 Extended mode off. */
+ /* 1 ACP = 0 Valid only if EXT = 1. */
+ /* 2 EC = 0 Standard 53-byte ATM cell. */
+ /* 3 SNC = 0 In sync. Must be set to 0 during initialization. */
+ /* 4 ESAR = 1 Enhanced SAR functionality enabled. */
+ /* 5 MCF = 1 Management Cell Filter active. */
+ /* 6 SER = 0 UTOPIA mode. */
+ /* 7 MPY = 1 Multiple PHY mode. */
+ /*-----------------------------------------------------------------*/
+ *SRSTATE(immr) = 0x0D;
+
+ /*-----------------------------------------------------------------*/
+ /* MRBLR - Maximum receive buffer length register. */
+ /* Must be cleared for ATM operation (see also SMRBLR). */
+ /*-----------------------------------------------------------------*/
+ *MRBLR(immr) = 0;
+
+ /*-----------------------------------------------------------------*/
+ /* RSTATE - SCC internal receive state parameters */
+ /* The first byte must be initialized with the value of SRFCR. */
+ /*-----------------------------------------------------------------*/
+ *RSTATE(immr) = (uint32)(*SRFCR(immr)) << 24;
+
+ /*-----------------------------------------------------------------*/
+ /* STFCR - SAR transmit function code */
+ /* 0-2 rsvd = 000 */
+ /* 3-4 BO = 11 Byte ordering (big endian). */
+ /* 5-7 FC = 000 Value driven on the address type signals AT[1-3] */
+ /* when the SDMA channel accesses memory. */
+ /*-----------------------------------------------------------------*/
+ *STFCR(immr) = 0x18;
+
+ /*-----------------------------------------------------------------*/
+ /* SRSTATE - SAR transmit status */
+ /* 0 EXT = 0 : Extended mode off */
+ /* 1 rsvd = 0 : */
+ /* 2 EC = 0 : Standard 53-byte ATM cell */
+ /* 3 rsvd = 0 : */
+ /* 4 ESAR = 1 : Enhanced SAR functionality enabled */
+ /* 5 rsvd = 0 : */
+ /* 6 SER = 0 : UTOPIA mode */
+ /* 7 MPY = 1 : Multiple PHY mode */
+ /*-----------------------------------------------------------------*/
+ *STSTATE(immr) = 0x09;
+
+ /*-----------------------------------------------------------------*/
+ /* TBDBASE - Transmit buffer descriptors base address */
+ /* The TBDs reside in cache safe external memory. */
+ /*-----------------------------------------------------------------*/
+ *TBDBASE(immr) = (uint32)g_atm.tbd_base_ptr;
+
+ /*-----------------------------------------------------------------*/
+ /* TSTATE - SCC internal transmit state parameters */
+ /* The first byte must be initialized with the value of STFCR. */
+ /*-----------------------------------------------------------------*/
+ *TSTATE(immr) = (uint32)(*STFCR(immr)) << 24;
+
+ /*-----------------------------------------------------------------*/
+ /* CTBASE - Connection table base address */
+ /* Offset from the beginning of DPRAM (64-byte aligned). */
+ /*-----------------------------------------------------------------*/
+ *CTBASE(immr) = CT_BASE;
+
+ /*-----------------------------------------------------------------*/
+ /* INTBASE - Interrupt queue base pointer. */
+ /* The interrupt queue resides in cache safe external memory. */
+ /*-----------------------------------------------------------------*/
+ *INTBASE(immr) = (uint32)g_atm.int_reload_ptr;
+
+ /*-----------------------------------------------------------------*/
+ /* INTPTR - Pointer into interrupt queue. */
+ /* Initialize to INTBASE. */
+ /*-----------------------------------------------------------------*/
+ *INTPTR(immr) = *INTBASE(immr);
+
+ /*-----------------------------------------------------------------*/
+ /* C_MASK - Constant mask for CRC32 */
+ /* Must be initialized to 0xDEBB20E3. */
+ /*-----------------------------------------------------------------*/
+ *C_MASK(immr) = 0xDEBB20E3;
+
+ /*-----------------------------------------------------------------*/
+ /* INT_ICNT - Interrupt threshold value */
+ /*-----------------------------------------------------------------*/
+ *INT_ICNT(immr) = 1;
+
+ /*-----------------------------------------------------------------*/
+ /* INT_CNT - Interrupt counter */
+ /* Initalize to INT_ICNT. Decremented for each interrupt entry */
+ /* reported in the interrupt queue. On zero an interrupt is */
+ /* signaled to the host by setting the GINT bit in the event */
+ /* register. The counter is reinitialized with INT_ICNT. */
+ /*-----------------------------------------------------------------*/
+ *INT_CNT(immr) = *INT_ICNT(immr);
+
+ /*-----------------------------------------------------------------*/
+ /* SMRBLR - SAR maximum receive buffer length register. */
+ /* Must be a multiple of 48 bytes. Common for all ATM connections. */
+ /*-----------------------------------------------------------------*/
+ *SMRBLR(immr) = SAR_RXB_SIZE;
+
+ /*-----------------------------------------------------------------*/
+ /* APCST - APC status register. */
+ /* 0 rsvd 0 */
+ /* 1-2 CSER 11 Initialize with the same value as NSER. */
+ /* 3-4 NSER 11 Next serial or UTOPIA channel. */
+ /* 5-7 rsvd 000 */
+ /* 8-10 rsvd 000 */
+ /* 11 rsvd 0 */
+ /* 12 ESAR 1 UTOPIA Level 2 MPHY enabled. */
+ /* 13 DIS 0 APC disable. Must be initiazed to 0. */
+ /* 14 PL2 0 Not used. */
+ /* 15 MPY 1 Multiple PHY mode on. */
+ /*-----------------------------------------------------------------*/
+ *APCST(immr) = 0x7809;
+
+ /*-----------------------------------------------------------------*/
+ /* APCPTR - Pointer to the APC parameter table */
+ /* In MPHY master mode this parameter points to the MPHY pointing */
+ /* table. 2-byte aligned. */
+ /*-----------------------------------------------------------------*/
+ *APCPTR(immr) = MPHYPT_BASE;
+
+ /*-----------------------------------------------------------------*/
+ /* HMASK - Header mask */
+ /* Each incoming cell is masked with HMASK before being compared */
+ /* to the entries in the address matching table. */
+ /*-----------------------------------------------------------------*/
+ *HMASK(immr) = AM_HMASK;
+
+ /*-----------------------------------------------------------------*/
+ /* AMBASE - Address matching table base address */
+ /*-----------------------------------------------------------------*/
+ *AMBASE(immr) = AM_BASE;
+
+ /*-----------------------------------------------------------------*/
+ /* AMEND - Address matching table end address */
+ /*-----------------------------------------------------------------*/
+ *AMEND(immr) = AM_BASE;
+
+ /*-----------------------------------------------------------------*/
+ /* APBASE - Address pointing table base address */
+ /*-----------------------------------------------------------------*/
+ *APBASE(immr) = AP_BASE;
+
+ /*-----------------------------------------------------------------*/
+ /* MPHYST - MPHY status register */
+ /* 0-1 rsvd 00 */
+ /* 2-6 NMPHY 00000 1 PHY */
+ /* 7-9 rsvd 000 */
+ /* 10-14 CMPHY 00000 Initialize with same value as NMPHY */
+ /*-----------------------------------------------------------------*/
+ *MPHYST(immr) = 0x0000;
+
+ /*-----------------------------------------------------------------*/
+ /* TCTEBASE - Transmit connection table extension base address */
+ /* Offset from the beginning of DPRAM (32-byte aligned). */
+ /*-----------------------------------------------------------------*/
+ *TCTEBASE(immr) = TCTE_BASE;
+
+ /*-----------------------------------------------------------------*/
+ /* Clear not used registers. */
+ /*-----------------------------------------------------------------*/
+}
+
+/*****************************************************************************
+ *
+ * FUNCTION NAME: atmUtpInit
+ *
+ * DESCRIPTION:
+ *
+ * This function initializes the ATM interface for
+ *
+ * - UTOPIA mode
+ * - muxed bus
+ * - master operation
+ * - multi PHY (because of a bug in the MPC860P rev. E.0)
+ * - internal clock = SYSCLK / 2
+ *
+ * EXTERNAL EFFECTS:
+ *
+ * After calling this function, the MPC860ESAR UTOPIA bus is
+ * active and uses the following ports/pins:
+ *
+ * Port Pin Signal Description
+ * ------ --- ------- -------------------------------------------
+ * PB[15] R17 TxClav Transmit cell available input/output signal
+ * PC[15] D16 RxClav Receive cell available input/output signal
+ * PD[15] U17 UTPB[0] UTOPIA bus bit 0 input/output signal
+ * PD[14] V19 UTPB[1] UTOPIA bus bit 1 input/output signal
+ * PD[13] V18 UTPB[2] UTOPIA bus bit 2 input/output signal
+ * PD[12] R16 UTPB[3] UTOPIA bus bit 3 input/output signal
+ * PD[11] T16 RXENB Receive enable input/output signal
+ * PD[10] W18 TXENB Transmit enable input/output signal
+ * PD[9] V17 UTPCLK UTOPIA clock input/output signal
+ * PD[7] T15 UTPB[4] UTOPIA bus bit 4 input/output signal
+ * PD[6] V16 UTPB[5] UTOPIA bus bit 5 input/output signal
+ * PD[5] U15 UTPB[6] UTOPIA bus bit 6 input/output signal
+ * PD[4] U16 UTPB[7] UTOPIA bus bit 7 input/output signal
+ * PD[3] W16 SOC Start of cell input/output signal
+ *
+ * PARAMETERS: none
+ *
+ * RETURNS: void
+ *
+ * REMARK:
+ *
+ * The ATM parameters and data structures must be configured before
+ * initializing the UTOPIA port. The UTOPIA port activates immediately
+ * upon initialization, and if its associated data structures are not
+ * initialized, the CPM will lock up.
+ *
+ ****************************************************************************/
+void atmUtpInit()
+{
+ volatile immap_t *immap = (immap_t *)CFG_IMMR;
+ volatile iop8xx_t *iop = &immap->im_ioport;
+ volatile car8xx_t *car = &immap->im_clkrst;
+ volatile cpm8xx_t *cpm = &immap->im_cpm;
+ int flag;
+
+ flag = disable_interrupts();
+
+ /*-----------------------------------------------------------------*/
+ /* SCCR - System Clock Control Register */
+ /* */
+ /* The UTOPIA clock can be selected to be internal clock or */
+ /* external clock (selected by the UTOPIA mode register). */
+ /* In case of internal clock, the UTOPIA clock is derived from */
+ /* the system frequency divided by two dividers. */
+ /* Bits 27-31 of the SCCR register are defined to control the */
+ /* UTOPIA clock. */
+ /* */
+ /* SCCR[27:29] DFUTP Division factor. Divide the system clock */
+ /* by 2^DFUTP. */
+ /* SCCR[30:31] DFAUTP Additional division factor. Divide the */
+ /* system clock by the following value: */
+ /* 00 = divide by 1 */
+ /* 00 = divide by 3 */
+ /* 10 = divide by 5 */
+ /* 11 = divide by 7 */
+ /* */
+ /* Note that the UTOPIA clock must be programmed as to operate */
+ /* within the range SYSCLK/10 .. 50Mhz. */
+ /*-----------------------------------------------------------------*/
+ car->car_sccr &= 0xFFFFFFE0;
+ car->car_sccr |= 0x00000008; /* UTPCLK = SYSCLK / 4 */
+
+ /*-----------------------------------------------------------------*/
+ /* RCCR - RISC Controller Configuration Register */
+ /* */
+ /* RCCR[8] DR1M IDMA Request 0 Mode */
+ /* 0 = edge sensitive */
+ /* 1 = level sensitive */
+ /* RCCR[9] DR0M IDMA Request 0 Mode */
+ /* 0 = edge sensitive */
+ /* 1 = level sensitive */
+ /* RCCR[10:11] DRQP IDMA Request Priority */
+ /* 00 = IDMA req. have more prio. than SCCs */
+ /* 01 = IDMA req. have less prio. then SCCs */
+ /* 10 = IDMA requests have the lowest prio. */
+ /* 11 = reserved */
+ /* */
+ /* The RCCR[DR0M] and RCCR[DR1M] bits must be set to enable UTOPIA */
+ /* operation. Also, program RCCR[DPQP] to 01 to give SCC transfers */
+ /* higher priority. */
+ /*-----------------------------------------------------------------*/
+ cpm->cp_rccr &= 0xFF0F;
+ cpm->cp_rccr |= 0x00D0;
+
+ /*-----------------------------------------------------------------*/
+ /* Port B - TxClav Signal */
+ /*-----------------------------------------------------------------*/
+ cpm->cp_pbpar |= 0x00010000; /* PBPAR[15] = 1 */
+ cpm->cp_pbdir &= 0xFFFEFFFF; /* PBDIR[15] = 0 */
+
+ /*-----------------------------------------------------------------*/
+ /* UTOPIA Mode Register */
+ /* */
+ /* - muxed bus (master operation only) */
+ /* - multi PHY (because of a bug in the MPC860P rev.E.0) */
+ /* - internal clock */
+ /* - no loopback */
+ /* - do no activate statistical counters */
+ /*-----------------------------------------------------------------*/
+ iop->utmode = 0x00000004; SYNC;
+
+ /*-----------------------------------------------------------------*/
+ /* Port D - UTOPIA Data and Control Signals */
+ /* */
+ /* 15-12 UTPB[0:3] UTOPIA bus bit 0 - 3 input/output signals */
+ /* 11 RXENB UTOPIA receive enable input/output signal */
+ /* 10 TXENB UTOPIA transmit enable input/output signal */
+ /* 9 TUPCLK UTOPIA clock input/output signal */
+ /* 8 MII-MDC Used by MII in simult. MII and UTOPIA operation */
+ /* 7-4 UTPB[4:7] UTOPIA bus bit 4 - 7 input/output signals */
+ /* 3 SOC UTOPIA Start of cell input/output signal */
+ /* 2 Reserved */
+ /* 1 Enable UTOPIA mode */
+ /* 0 Enable SAR */
+ /*-----------------------------------------------------------------*/
+ iop->iop_pdpar |= 0xDF7F; SYNC;
+ iop->iop_pddir &= 0x2080; SYNC;
+
+ /*-----------------------------------------------------------------*/
+ /* Port C - RxClav Signal */
+ /*-----------------------------------------------------------------*/
+ iop->iop_pcpar |= 0x0001; /* PCPAR[15] = 1 */
+ iop->iop_pcdir &= 0xFFFE; /* PCDIR[15] = 0 */
+ iop->iop_pcso &= 0xFFFE; /* PCSO[15] = 0 */
+
+ if (flag)
+ enable_interrupts();
+}