Add Sandburst Metrobox and Sandburst Karef board support packages.

Second serial port on 440GX now defined as a system device.
Add 'Short Etch' code for Cicada PHY within 440gx_enet.c
Patch by Travis B. Sawyer, 12 Jul 2005

Check return value of malloc in 440gx_enet.c
Patch by Travis B. Sawyer, 18 Jul 2005

1 files changed, 515 insertions, 0 deletions

diff --git a/board/sandburst/common/ppc440gx_i2c.c b/board/sandburst/common/ppc440gx_i2c.c
new file mode 100644
index 0000000..c3b267c
--- /dev/null
+++ b/board/sandburst/common/ppc440gx_i2c.c
@@ -0,0 +1,515 @@
+/*
+ *  Copyright (C) 2005 Sandburst Corporation
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+/*
+ * Ported from cpu/ppc4xx/i2c.c by AS HARNOIS by
+ * Travis B. Sawyer
+ * Sandburst Corporation.
+ */
+#include <common.h>
+#include <ppc4xx.h>
+#if defined(CONFIG_440)
+#   include <440_i2c.h>
+#else
+#   include <405gp_i2c.h>
+#endif
+#include <i2c.h>
+#include <440_i2c.h>
+#include <command.h>
+#include "ppc440gx_i2c.h"
+
+#ifdef CONFIG_I2C_BUS1
+
+
+
+#define IIC_OK		0
+#define IIC_NOK		1
+#define IIC_NOK_LA	2		/* Lost arbitration */
+#define IIC_NOK_ICT	3		/* Incomplete transfer */
+#define IIC_NOK_XFRA	4		/* Transfer aborted */
+#define IIC_NOK_DATA	5		/* No data in buffer */
+#define IIC_NOK_TOUT	6		/* Transfer timeout */
+
+#define IIC_TIMEOUT 1			/* 1 second */
+#if defined(CFG_I2C_NOPROBES)
+static uchar i2c_no_probes[] = CFG_I2C_NOPROBES;
+#endif
+
+static void _i2c_bus1_reset (void)
+{
+	int i, status;
+
+	/* Reset status register */
+	/* write 1 in SCMP and IRQA to clear these fields */
+	out8 (IIC_STS1, 0x0A);
+
+	/* write 1 in IRQP IRQD LA ICT XFRA to clear these fields */
+	out8 (IIC_EXTSTS1, 0x8F);
+	__asm__ volatile ("eieio");
+
+	/*
+	 * Get current state, reset bus
+	 * only if no transfers are pending.
+	 */
+	i = 10;
+	do {
+		/* Get status */
+		status = in8 (IIC_STS1);
+		udelay (500);			/* 500us */
+		i--;
+	} while ((status & IIC_STS_PT) && (i > 0));
+	/* Soft reset controller */
+	status = in8 (IIC_XTCNTLSS1);
+	out8 (IIC_XTCNTLSS1, (status | IIC_XTCNTLSS_SRST));
+	__asm__ volatile ("eieio");
+
+	/* make sure where in initial state, data hi, clock hi */
+	out8 (IIC_DIRECTCNTL1, 0xC);
+	for (i = 0; i < 10; i++) {
+		if ((in8 (IIC_DIRECTCNTL1) & 0x3) != 0x3) {
+			/* clock until we get to known state */
+			out8 (IIC_DIRECTCNTL1, 0x8);	/* clock lo */
+			udelay (100);		/* 100us */
+			out8 (IIC_DIRECTCNTL1, 0xC);	/* clock hi */
+			udelay (100);		/* 100us */
+		} else {
+			break;
+		}
+	}
+	/* send start condition */
+	out8 (IIC_DIRECTCNTL1, 0x4);
+	udelay (1000);				/* 1ms */
+	/* send stop condition */
+	out8 (IIC_DIRECTCNTL1, 0xC);
+	udelay (1000);				/* 1ms */
+	/* Unreset controller */
+	out8 (IIC_XTCNTLSS1, (status & ~IIC_XTCNTLSS_SRST));
+	udelay (1000);				/* 1ms */
+}
+
+void i2c1_init (int speed, int slaveadd)
+{
+	sys_info_t sysInfo;
+	unsigned long freqOPB;
+	int val, divisor;
+
+#ifdef CFG_I2C_INIT_BOARD
+	/* call board specific i2c bus reset routine before accessing the   */
+	/* environment, which might be in a chip on that bus. For details   */
+	/* about this problem see doc/I2C_Edge_Conditions.                  */
+	i2c_init_board();
+#endif
+
+	/* Handle possible failed I2C state */
+	/* FIXME: put this into i2c_init_board()? */
+	_i2c_bus1_reset ();
+
+	/* clear lo master address */
+	out8 (IIC_LMADR1, 0);
+
+	/* clear hi master address */
+	out8 (IIC_HMADR1, 0);
+
+	/* clear lo slave address */
+	out8 (IIC_LSADR1, 0);
+
+	/* clear hi slave address */
+	out8 (IIC_HSADR1, 0);
+
+	/* Clock divide Register */
+	/* get OPB frequency */
+	get_sys_info (&sysInfo);
+	freqOPB = sysInfo.freqPLB / sysInfo.pllOpbDiv;
+	/* set divisor according to freqOPB */
+	divisor = (freqOPB - 1) / 10000000;
+	if (divisor == 0)
+		divisor = 1;
+	out8 (IIC_CLKDIV1, divisor);
+
+	/* no interrupts */
+	out8 (IIC_INTRMSK1, 0);
+
+	/* clear transfer count */
+	out8 (IIC_XFRCNT1, 0);
+
+	/* clear extended control & stat */
+	/* write 1 in SRC SRS SWC SWS to clear these fields */
+	out8 (IIC_XTCNTLSS1, 0xF0);
+
+	/* Mode Control Register
+	   Flush Slave/Master data buffer */
+	out8 (IIC_MDCNTL1, IIC_MDCNTL_FSDB | IIC_MDCNTL_FMDB);
+	__asm__ volatile ("eieio");
+
+
+	val = in8(IIC_MDCNTL1);
+	__asm__ volatile ("eieio");
+
+	/* Ignore General Call, slave transfers are ignored,
+	   disable interrupts, exit unknown bus state, enable hold
+	   SCL
+	   100kHz normaly or FastMode for 400kHz and above
+	*/
+
+	val |= IIC_MDCNTL_EUBS|IIC_MDCNTL_HSCL;
+	if( speed >= 400000 ){
+		val |= IIC_MDCNTL_FSM;
+	}
+	out8 (IIC_MDCNTL1, val);
+
+	/* clear control reg */
+	out8 (IIC_CNTL1, 0x00);
+	__asm__ volatile ("eieio");
+
+}
+
+/*
+  This code tries to use the features of the 405GP i2c
+  controller. It will transfer up to 4 bytes in one pass
+  on the loop. It only does out8(lbz) to the buffer when it
+  is possible to do out16(lhz) transfers.
+
+  cmd_type is 0 for write 1 for read.
+
+  addr_len can take any value from 0-255, it is only limited
+  by the char, we could make it larger if needed. If it is
+  0 we skip the address write cycle.
+
+  Typical case is a Write of an addr followd by a Read. The
+  IBM FAQ does not cover this. On the last byte of the write
+  we don't set the creg CHT bit, and on the first bytes of the
+  read we set the RPST bit.
+
+  It does not support address only transfers, there must be
+  a data part. If you want to write the address yourself, put
+  it in the data pointer.
+
+  It does not support transfer to/from address 0.
+
+  It does not check XFRCNT.
+*/
+static
+int i2c_transfer1(unsigned char cmd_type,
+		  unsigned char chip,
+		  unsigned char addr[],
+		  unsigned char addr_len,
+		  unsigned char data[],
+		  unsigned short data_len )
+{
+	unsigned char* ptr;
+	int reading;
+	int tran,cnt;
+	int result;
+	int status;
+	int i;
+	uchar creg;
+
+	if( data == 0 || data_len == 0 ){
+		/*Don't support data transfer of no length or to address 0*/
+		printf( "i2c_transfer: bad call\n" );
+		return IIC_NOK;
+	}
+	if( addr && addr_len ){
+		ptr = addr;
+		cnt = addr_len;
+		reading = 0;
+	}else{
+		ptr = data;
+		cnt = data_len;
+		reading = cmd_type;
+	}
+
+	/*Clear Stop Complete Bit*/
+	out8(IIC_STS1,IIC_STS_SCMP);
+	/* Check init */
+	i=10;
+	do {
+		/* Get status */
+		status = in8(IIC_STS1);
+		__asm__ volatile("eieio");
+		i--;
+	} while ((status & IIC_STS_PT) && (i>0));
+
+	if (status & IIC_STS_PT) {
+		result = IIC_NOK_TOUT;
+		return(result);
+	}
+	/*flush the Master/Slave Databuffers*/
+	out8(IIC_MDCNTL1, ((in8(IIC_MDCNTL1))|IIC_MDCNTL_FMDB|IIC_MDCNTL_FSDB));
+	/*need to wait 4 OPB clocks? code below should take that long*/
+
+	/* 7-bit adressing */
+	out8(IIC_HMADR1,0);
+	out8(IIC_LMADR1, chip);
+	__asm__ volatile("eieio");
+
+	tran = 0;
+	result = IIC_OK;
+	creg = 0;
+
+	while ( tran != cnt && (result == IIC_OK)) {
+		int  bc,j;
+
+		/* Control register =
+		   Normal transfer, 7-bits adressing, Transfer up to bc bytes, Normal start,
+		   Transfer is a sequence of transfers
+		*/
+		creg |= IIC_CNTL_PT;
+
+		bc = (cnt - tran) > 4 ? 4 :
+			cnt - tran;
+		creg |= (bc-1)<<4;
+		/* if the real cmd type is write continue trans*/
+		if ( (!cmd_type && (ptr == addr)) || ((tran+bc) != cnt) )
+			creg |= IIC_CNTL_CHT;
+
+		if (reading)
+			creg |= IIC_CNTL_READ;
+		else {
+			for(j=0; j<bc; j++) {
+				/* Set buffer */
+				out8(IIC_MDBUF1,ptr[tran+j]);
+				__asm__ volatile("eieio");
+			}
+		}
+		out8(IIC_CNTL1, creg );
+		__asm__ volatile("eieio");
+
+		/* Transfer is in progress
+		   we have to wait for upto 5 bytes of data
+		   1 byte chip address+r/w bit then bc bytes
+		   of data.
+		   udelay(10) is 1 bit time at 100khz
+		   Doubled for slop. 20 is too small.
+		*/
+		i=2*5*8;
+		do {
+			/* Get status */
+			status = in8(IIC_STS1);
+			__asm__ volatile("eieio");
+			udelay (10);
+			i--;
+		} while ((status & IIC_STS_PT) && !(status & IIC_STS_ERR)
+			 && (i>0));
+
+		if (status & IIC_STS_ERR) {
+			result = IIC_NOK;
+			status = in8 (IIC_EXTSTS1);
+			/* Lost arbitration? */
+			if (status & IIC_EXTSTS_LA)
+				result = IIC_NOK_LA;
+			/* Incomplete transfer? */
+			if (status & IIC_EXTSTS_ICT)
+				result = IIC_NOK_ICT;
+			/* Transfer aborted? */
+			if (status & IIC_EXTSTS_XFRA)
+				result = IIC_NOK_XFRA;
+		} else if ( status & IIC_STS_PT) {
+			result = IIC_NOK_TOUT;
+		}
+		/* Command is reading => get buffer */
+		if ((reading) && (result == IIC_OK)) {
+			/* Are there data in buffer */
+			if (status & IIC_STS_MDBS) {
+				/*
+				  even if we have data we have to wait 4OPB clocks
+				  for it to hit the front of the FIFO, after that
+				  we can just read. We should check XFCNT here and
+				  if the FIFO is full there is no need to wait.
+				*/
+				udelay (1);
+				for(j=0;j<bc;j++) {
+					ptr[tran+j] = in8(IIC_MDBUF1);
+					__asm__ volatile("eieio");
+				}
+			} else
+				result = IIC_NOK_DATA;
+		}
+		creg = 0;
+		tran+=bc;
+		if( ptr == addr && tran == cnt ) {
+			ptr = data;
+			cnt = data_len;
+			tran = 0;
+			reading = cmd_type;
+			if( reading )
+				creg = IIC_CNTL_RPST;
+		}
+	}
+	return (result);
+}
+
+int i2c_probe1 (uchar chip)
+{
+	uchar buf[1];
+
+	buf[0] = 0;
+
+	/*
+	 * What is needed is to send the chip address and verify that the
+	 * address was <ACK>ed (i.e. there was a chip at that address which
+	 * drove the data line low).
+	 */
+	return(i2c_transfer1 (1, chip << 1, 0,0, buf, 1) != 0);
+}
+
+
+int i2c_read1 (uchar chip, uint addr, int alen, uchar * buffer, int len)
+{
+	uchar xaddr[4];
+	int ret;
+
+	if ( alen > 4 ) {
+		printf ("I2C read: addr len %d not supported\n", alen);
+		return 1;
+	}
+
+	if ( alen > 0 ) {
+		xaddr[0] = (addr >> 24) & 0xFF;
+		xaddr[1] = (addr >> 16) & 0xFF;
+		xaddr[2] = (addr >> 8) & 0xFF;
+		xaddr[3] = addr & 0xFF;
+	}
+
+
+#ifdef CFG_I2C_EEPROM_ADDR_OVERFLOW
+	/*
+	 * EEPROM chips that implement "address overflow" are ones
+	 * like Catalyst 24WC04/08/16 which has 9/10/11 bits of
+	 * address and the extra bits end up in the "chip address"
+	 * bit slots. This makes a 24WC08 (1Kbyte) chip look like
+	 * four 256 byte chips.
+	 *
+	 * Note that we consider the length of the address field to
+	 * still be one byte because the extra address bits are
+	 * hidden in the chip address.
+	 */
+	if( alen > 0 )
+		chip |= ((addr >> (alen * 8)) & CFG_I2C_EEPROM_ADDR_OVERFLOW);
+#endif
+	if( (ret = i2c_transfer1( 1, chip<<1, &xaddr[4-alen], alen, buffer, len )) != 0) {
+		printf( "I2c read: failed %d\n", ret);
+		return 1;
+	}
+	return 0;
+}
+
+int i2c_write1 (uchar chip, uint addr, int alen, uchar * buffer, int len)
+{
+	uchar xaddr[4];
+
+	if ( alen > 4 ) {
+		printf ("I2C write: addr len %d not supported\n", alen);
+		return 1;
+
+	}
+	if ( alen > 0 ) {
+		xaddr[0] = (addr >> 24) & 0xFF;
+		xaddr[1] = (addr >> 16) & 0xFF;
+		xaddr[2] = (addr >> 8) & 0xFF;
+		xaddr[3] = addr & 0xFF;
+	}
+
+#ifdef CFG_I2C_EEPROM_ADDR_OVERFLOW
+	/*
+	 * EEPROM chips that implement "address overflow" are ones
+	 * like Catalyst 24WC04/08/16 which has 9/10/11 bits of
+	 * address and the extra bits end up in the "chip address"
+	 * bit slots. This makes a 24WC08 (1Kbyte) chip look like
+	 * four 256 byte chips.
+	 *
+	 * Note that we consider the length of the address field to
+	 * still be one byte because the extra address bits are
+	 * hidden in the chip address.
+	 */
+	if( alen > 0 )
+		chip |= ((addr >> (alen * 8)) & CFG_I2C_EEPROM_ADDR_OVERFLOW);
+#endif
+
+	return (i2c_transfer1( 0, chip<<1, &xaddr[4-alen], alen, buffer, len ) != 0);
+}
+
+/*-----------------------------------------------------------------------
+ * Read a register
+ */
+uchar i2c_reg_read1(uchar i2c_addr, uchar reg)
+{
+	char buf;
+
+	i2c_read1(i2c_addr, reg, 1, &buf, 1);
+
+	return(buf);
+}
+
+/*-----------------------------------------------------------------------
+ * Write a register
+ */
+void i2c_reg_write1(uchar i2c_addr, uchar reg, uchar val)
+{
+	i2c_write1(i2c_addr, reg, 1, &val, 1);
+}
+
+
+int do_i2c1_probe(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	int j;
+#if defined(CFG_I2C_NOPROBES)
+	int k, skip;
+#endif
+
+	puts ("Valid chip addresses:");
+	for(j = 0; j < 128; j++) {
+#if defined(CFG_I2C_NOPROBES)
+		skip = 0;
+		for (k = 0; k < sizeof(i2c_no_probes); k++){
+			if (j == i2c_no_probes[k]){
+				skip = 1;
+				break;
+			}
+		}
+		if (skip)
+			continue;
+#endif
+		if(i2c_probe1(j) == 0) {
+			printf(" %02X", j);
+		}
+	}
+	putc ('\n');
+
+#if defined(CFG_I2C_NOPROBES)
+	puts ("Excluded chip addresses:");
+	for( k = 0; k < sizeof(i2c_no_probes); k++ )
+		printf(" %02X", i2c_no_probes[k] );
+	putc ('\n');
+#endif
+
+	return 0;
+}
+
+U_BOOT_CMD(
+	iprobe1,	1,	1,	do_i2c1_probe,
+	"iprobe1  - probe to discover valid I2C chip addresses\n",
+	"\n    -discover valid I2C chip addresses\n"
+);
+
+#endif
+