* Patch by Shlomo Kut, 29 Mar 2004:

  Add support for MKS Instruments "Quantum" board

* Fix build problem with Cogent boards;
  avoid using <asm/byteorder.h> when using the host compiler

1 files changed, 263 insertions, 0 deletions

diff --git a/board/quantum/fpga.c b/board/quantum/fpga.c
new file mode 100644
index 000000000..75c2658e8
--- /dev/null
+++ b/board/quantum/fpga.c
@@ -0,0 +1,263 @@
+/*
+ * (C) Copyright 2001-2003
+ * Matthias Fuchs, esd gmbh germany, matthias.fuchs@esd-electronics.com
+ * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
+ *
+ * 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
+ */
+/* The DEBUG define must be before common to enable debugging */
+#undef DEBUG
+#include <common.h>
+#include <asm/processor.h>
+#include <command.h>
+#include "fpga.h"
+/* ------------------------------------------------------------------------- */
+
+#define MAX_ONES               226
+
+/* MPC850 port D */
+#define PD(bit) (1 << (15 - (bit)))
+# define FPGA_INIT             PD(11)	/* FPGA init pin (ppc input)     */
+# define FPGA_PRG              PD(12)	/* FPGA program pin (ppc output) */
+# define FPGA_CLK              PD(13)	/* FPGA clk pin (ppc output)     */
+# define FPGA_DATA             PD(14)	/* FPGA data pin (ppc output)    */
+# define FPGA_DONE             PD(15)	/* FPGA done pin (ppc input)     */
+
+
+/* DDR 0 - input, 1 - output */
+#define FPGA_INIT_PDDIR          FPGA_PRG | FPGA_CLK | FPGA_DATA	/* just set outputs */
+
+
+#define SET_FPGA(data)         immr->im_ioport.iop_pddat = (data)
+#define GET_FPGA               immr->im_ioport.iop_pddat
+
+#define FPGA_WRITE_1 {                                                    \
+	SET_FPGA(FPGA_PRG |            FPGA_DATA);  /* set clock to 0 */  \
+	SET_FPGA(FPGA_PRG |            FPGA_DATA);  /* set data to 1  */  \
+	SET_FPGA(FPGA_PRG | FPGA_CLK | FPGA_DATA);  /* set clock to 1 */  \
+	SET_FPGA(FPGA_PRG | FPGA_CLK | FPGA_DATA);}	/* set data to 1  */
+
+#define FPGA_WRITE_0 {                                                    \
+	SET_FPGA(FPGA_PRG |            FPGA_DATA);  /* set clock to 0 */  \
+	SET_FPGA(FPGA_PRG);                         /* set data to 0  */  \
+	SET_FPGA(FPGA_PRG | FPGA_CLK);              /* set clock to 1 */  \
+	SET_FPGA(FPGA_PRG | FPGA_CLK | FPGA_DATA);}	/* set data to 1  */
+
+
+int fpga_boot (unsigned char *fpgadata, int size)
+{
+	volatile immap_t *immr = (immap_t *) CFG_IMMR;
+	int i, index, len;
+	int count;
+
+#ifdef CFG_FPGA_SPARTAN2
+	int j;
+	unsigned char data;
+#else
+	unsigned char b;
+	int bit;
+#endif
+
+	debug ("fpga_boot: fpgadata = %p, size = %d\n", fpgadata, size);
+
+	/* display infos on fpgaimage */
+	printf ("FPGA:");
+	index = 15;
+	for (i = 0; i < 4; i++) {
+		len = fpgadata[index];
+		printf (" %s", &(fpgadata[index + 1]));
+		index += len + 3;
+	}
+	printf ("\n");
+
+
+	index = 0;
+
+#ifdef CFG_FPGA_SPARTAN2
+	/* search for preamble 0xFFFFFFFF */
+	while (1) {
+		if ((fpgadata[index] == 0xff) && (fpgadata[index + 1] == 0xff)
+		    && (fpgadata[index + 2] == 0xff)
+		    && (fpgadata[index + 3] == 0xff))
+			break;	/* preamble found */
+		else
+			index++;
+	}
+#else
+	/* search for preamble 0xFF2X */
+	for (index = 0; index < size - 1; index++) {
+		if ((fpgadata[index] == 0xff)
+		    && ((fpgadata[index + 1] & 0xf0) == 0x30))
+			break;
+	}
+	index += 2;
+#endif
+
+	debug ("FPGA: configdata starts at position 0x%x\n", index);
+	debug ("FPGA: length of fpga-data %d\n", size - index);
+
+	/*
+	 * Setup port pins for fpga programming
+	 */
+	immr->im_ioport.iop_pddir = FPGA_INIT_PDDIR;
+
+	debug ("%s, ", ((GET_FPGA & FPGA_DONE) == 0) ? "NOT DONE" : "DONE");
+	debug ("%s\n", ((GET_FPGA & FPGA_INIT) == 0) ? "NOT INIT" : "INIT");
+
+	/*
+	 * Init fpga by asserting and deasserting PROGRAM*
+	 */
+	SET_FPGA (FPGA_CLK | FPGA_DATA);
+
+	/* Wait for FPGA init line low */
+	count = 0;
+	while (GET_FPGA & FPGA_INIT) {
+		udelay (1000);	/* wait 1ms */
+		/* Check for timeout - 100us max, so use 3ms */
+		if (count++ > 3) {
+			debug ("FPGA: Booting failed!\n");
+			return ERROR_FPGA_PRG_INIT_LOW;
+		}
+	}
+
+	debug ("%s, ", ((GET_FPGA & FPGA_DONE) == 0) ? "NOT DONE" : "DONE");
+	debug ("%s\n", ((GET_FPGA & FPGA_INIT) == 0) ? "NOT INIT" : "INIT");
+
+	/* deassert PROGRAM* */
+	SET_FPGA (FPGA_PRG | FPGA_CLK | FPGA_DATA);
+
+	/* Wait for FPGA end of init period .  */
+	count = 0;
+	while (!(GET_FPGA & FPGA_INIT)) {
+		udelay (1000);	/* wait 1ms */
+		/* Check for timeout */
+		if (count++ > 3) {
+			debug ("FPGA: Booting failed!\n");
+			return ERROR_FPGA_PRG_INIT_HIGH;
+		}
+	}
+
+	debug ("%s, ", ((GET_FPGA & FPGA_DONE) == 0) ? "NOT DONE" : "DONE");
+	debug ("%s\n", ((GET_FPGA & FPGA_INIT) == 0) ? "NOT INIT" : "INIT");
+
+	debug ("write configuration data into fpga\n");
+	/* write configuration-data into fpga... */
+
+#ifdef CFG_FPGA_SPARTAN2
+	/*
+	 * Load uncompressed image into fpga
+	 */
+	for (i = index; i < size; i++) {
+#ifdef CFG_FPGA_PROG_FEEDBACK
+		if ((i % 1024) == 0)
+			printf ("%6d out of %6d\r", i, size);	/* let them know we are alive */
+#endif
+
+		data = fpgadata[i];
+		for (j = 0; j < 8; j++) {
+			if ((data & 0x80) == 0x80) {
+				FPGA_WRITE_1;
+			} else {
+				FPGA_WRITE_0;
+			}
+			data <<= 1;
+		}
+	}
+	/* add some 0xff to the end of the file */
+	for (i = 0; i < 8; i++) {
+		data = 0xff;
+		for (j = 0; j < 8; j++) {
+			if ((data & 0x80) == 0x80) {
+				FPGA_WRITE_1;
+			} else {
+				FPGA_WRITE_0;
+			}
+			data <<= 1;
+		}
+	}
+#else
+	/* send 0xff 0x20 */
+	FPGA_WRITE_1;
+	FPGA_WRITE_1;
+	FPGA_WRITE_1;
+	FPGA_WRITE_1;
+	FPGA_WRITE_1;
+	FPGA_WRITE_1;
+	FPGA_WRITE_1;
+	FPGA_WRITE_1;
+	FPGA_WRITE_0;
+	FPGA_WRITE_0;
+	FPGA_WRITE_1;
+	FPGA_WRITE_0;
+	FPGA_WRITE_0;
+	FPGA_WRITE_0;
+	FPGA_WRITE_0;
+	FPGA_WRITE_0;
+
+	/*
+	 ** Bit_DeCompression
+	 **   Code 1           .. maxOnes     : n                 '1's followed by '0'
+	 **        maxOnes + 1 .. maxOnes + 1 : n - 1             '1's no '0'
+	 **        maxOnes + 2 .. 254         : n - (maxOnes + 2) '0's followed by '1'
+	 **        255                        :                   '1'
+	 */
+
+	for (i = index; i < size; i++) {
+		b = fpgadata[i];
+		if ((b >= 1) && (b <= MAX_ONES)) {
+			for (bit = 0; bit < b; bit++) {
+				FPGA_WRITE_1;
+			}
+			FPGA_WRITE_0;
+		} else if (b == (MAX_ONES + 1)) {
+			for (bit = 1; bit < b; bit++) {
+				FPGA_WRITE_1;
+			}
+		} else if ((b >= (MAX_ONES + 2)) && (b <= 254)) {
+			for (bit = 0; bit < (b - (MAX_ONES + 2)); bit++) {
+				FPGA_WRITE_0;
+			}
+			FPGA_WRITE_1;
+		} else if (b == 255) {
+			FPGA_WRITE_1;
+		}
+	}
+#endif
+	debug ("\n\n");
+	debug ("%s, ", ((GET_FPGA & FPGA_DONE) == 0) ? "NOT DONE" : "DONE");
+	debug ("%s\n", ((GET_FPGA & FPGA_INIT) == 0) ? "NOT INIT" : "INIT");
+
+	/*
+	 * Check if fpga's DONE signal - correctly booted ?
+	 */
+
+	/* Wait for FPGA end of programming period .  */
+	count = 0;
+	while (!(GET_FPGA & FPGA_DONE)) {
+		udelay (1000);	/* wait 1ms */
+		/* Check for timeout */
+		if (count++ > 3) {
+			debug ("FPGA: Booting failed!\n");
+			return ERROR_FPGA_PRG_DONE;
+		}
+	}
+
+	debug ("FPGA: Booting successful!\n");
+	return 0;
+}