Merge branch 'master' of git://git.denx.de/u-boot-arm

1 files changed, 399 insertions, 0 deletions

diff --git a/drivers/fpga/lattice.c b/drivers/fpga/lattice.c
new file mode 100644
index 000000000..a0e782310
--- /dev/null
+++ b/drivers/fpga/lattice.c
@@ -0,0 +1,399 @@
+/*
+ * (C) Copyright 2010
+ * Stefano Babic, DENX Software Engineering, sbabic@denx.de.
+ *
+ * (C) Copyright 2002
+ * Rich Ireland, Enterasys Networks, rireland@enterasys.com.
+ *
+ * ispVM functions adapted from Lattice's ispmVMEmbedded code:
+ * Copyright 2009 Lattice Semiconductor Corp.
+ *
+ * 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
+ *
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <fpga.h>
+#include <lattice.h>
+
+static lattice_board_specific_func *pfns;
+static char *fpga_image;
+static unsigned long read_bytes;
+static unsigned long bufsize;
+static unsigned short expectedCRC;
+
+/*
+ * External variables and functions declared in ivm_core.c module.
+ */
+extern unsigned short g_usCalculatedCRC;
+extern unsigned short g_usDataType;
+extern unsigned char *g_pucIntelBuffer;
+extern unsigned char *g_pucHeapMemory;
+extern unsigned short g_iHeapCounter;
+extern unsigned short g_iHEAPSize;
+extern unsigned short g_usIntelDataIndex;
+extern unsigned short g_usIntelBufferSize;
+extern char *const g_szSupportedVersions[];
+
+
+/*
+ * ispVMDelay
+ *
+ * Users must implement a delay to observe a_usTimeDelay, where
+ * bit 15 of the a_usTimeDelay defines the unit.
+ *      1 = milliseconds
+ *      0 = microseconds
+ * Example:
+ *      a_usTimeDelay = 0x0001 = 1 microsecond delay.
+ *      a_usTimeDelay = 0x8001 = 1 millisecond delay.
+ *
+ * This subroutine is called upon to provide a delay from 1 millisecond to a few
+ * hundreds milliseconds each time.
+ * It is understood that due to a_usTimeDelay is defined as unsigned short, a 16
+ * bits integer, this function is restricted to produce a delay to 64000
+ * micro-seconds or 32000 milli-second maximum. The VME file will never pass on
+ * to this function a delay time > those maximum number. If it needs more than
+ * those maximum, the VME file will launch the delay function several times to
+ * realize a larger delay time cummulatively.
+ * It is perfectly alright to provide a longer delay than required. It is not
+ * acceptable if the delay is shorter.
+ */
+void ispVMDelay(unsigned short delay)
+{
+	if (delay & 0x8000)
+		delay = (delay & ~0x8000) * 1000;
+	udelay(delay);
+}
+
+void writePort(unsigned char a_ucPins, unsigned char a_ucValue)
+{
+	a_ucValue = a_ucValue ? 1 : 0;
+
+	switch (a_ucPins) {
+	case g_ucPinTDI:
+		pfns->jtag_set_tdi(a_ucValue);
+		break;
+	case g_ucPinTCK:
+		pfns->jtag_set_tck(a_ucValue);
+		break;
+	case g_ucPinTMS:
+		pfns->jtag_set_tms(a_ucValue);
+		break;
+	default:
+		printf("%s: requested unknown pin\n", __func__);
+	}
+}
+
+unsigned char readPort(void)
+{
+	return pfns->jtag_get_tdo();
+}
+
+void sclock(void)
+{
+	writePort(g_ucPinTCK, 0x01);
+	writePort(g_ucPinTCK, 0x00);
+}
+
+void calibration(void)
+{
+	/* Apply 2 pulses to TCK. */
+	writePort(g_ucPinTCK, 0x00);
+	writePort(g_ucPinTCK, 0x01);
+	writePort(g_ucPinTCK, 0x00);
+	writePort(g_ucPinTCK, 0x01);
+	writePort(g_ucPinTCK, 0x00);
+
+	ispVMDelay(0x8001);
+
+	/* Apply 2 pulses to TCK. */
+	writePort(g_ucPinTCK, 0x01);
+	writePort(g_ucPinTCK, 0x00);
+	writePort(g_ucPinTCK, 0x01);
+	writePort(g_ucPinTCK, 0x00);
+}
+
+/*
+ * GetByte
+ *
+ * Returns a byte to the caller. The returned byte depends on the
+ * g_usDataType register. If the HEAP_IN bit is set, then the byte
+ * is returned from the HEAP. If the LHEAP_IN bit is set, then
+ * the byte is returned from the intelligent buffer. Otherwise,
+ * the byte is returned directly from the VME file.
+ */
+unsigned char GetByte(void)
+{
+	unsigned char ucData;
+	unsigned int block_size = 4 * 1024;
+
+	if (g_usDataType & HEAP_IN) {
+
+		/*
+		 * Get data from repeat buffer.
+		 */
+
+		if (g_iHeapCounter > g_iHEAPSize) {
+
+			/*
+			 * Data over-run.
+			 */
+
+			return 0xFF;
+		}
+
+		ucData = g_pucHeapMemory[g_iHeapCounter++];
+	} else if (g_usDataType & LHEAP_IN) {
+
+		/*
+		 * Get data from intel buffer.
+		 */
+
+		if (g_usIntelDataIndex >= g_usIntelBufferSize) {
+			return 0xFF;
+		}
+
+		ucData = g_pucIntelBuffer[g_usIntelDataIndex++];
+	} else {
+		if (read_bytes == bufsize) {
+			return 0xFF;
+		}
+		ucData = *fpga_image++;
+		read_bytes++;
+
+		if (!(read_bytes % block_size)) {
+			printf("Downloading FPGA %ld/%ld completed\r",
+				read_bytes,
+				bufsize);
+		}
+
+		if (expectedCRC != 0) {
+			ispVMCalculateCRC32(ucData);
+		}
+	}
+
+	return ucData;
+}
+
+signed char ispVM(void)
+{
+	char szFileVersion[9]      = { 0 };
+	signed char cRetCode         = 0;
+	signed char cIndex           = 0;
+	signed char cVersionIndex    = 0;
+	unsigned char ucReadByte     = 0;
+	unsigned short crc;
+
+	g_pucHeapMemory		= NULL;
+	g_iHeapCounter		= 0;
+	g_iHEAPSize		= 0;
+	g_usIntelDataIndex	= 0;
+	g_usIntelBufferSize	= 0;
+	g_usCalculatedCRC = 0;
+	expectedCRC   = 0;
+	ucReadByte = GetByte();
+	switch (ucReadByte) {
+	case FILE_CRC:
+		crc = (unsigned char)GetByte();
+		crc <<= 8;
+		crc |= GetByte();
+		expectedCRC = crc;
+
+		for (cIndex = 0; cIndex < 8; cIndex++)
+			szFileVersion[cIndex] = GetByte();
+
+		break;
+	default:
+		szFileVersion[0] = (signed char) ucReadByte;
+		for (cIndex = 1; cIndex < 8; cIndex++)
+			szFileVersion[cIndex] = GetByte();
+
+		break;
+	}
+
+	/*
+	 *
+	 * Compare the VME file version against the supported version.
+	 *
+	 */
+
+	for (cVersionIndex = 0; g_szSupportedVersions[cVersionIndex] != 0;
+		cVersionIndex++) {
+		for (cIndex = 0; cIndex < 8; cIndex++) {
+			if (szFileVersion[cIndex] !=
+				g_szSupportedVersions[cVersionIndex][cIndex]) {
+				cRetCode = VME_VERSION_FAILURE;
+				break;
+			}
+			cRetCode = 0;
+		}
+
+		if (cRetCode == 0) {
+			break;
+		}
+	}
+
+	if (cRetCode < 0) {
+		return VME_VERSION_FAILURE;
+	}
+
+	printf("VME file checked: starting downloading to FPGA\n");
+
+	ispVMStart();
+
+	cRetCode = ispVMCode();
+
+	ispVMEnd();
+	ispVMFreeMem();
+	puts("\n");
+
+	if (cRetCode == 0 && expectedCRC != 0 &&
+			(expectedCRC != g_usCalculatedCRC)) {
+		printf("Expected CRC:   0x%.4X\n", expectedCRC);
+		printf("Calculated CRC: 0x%.4X\n", g_usCalculatedCRC);
+		return VME_CRC_FAILURE;
+	}
+	return cRetCode;
+}
+
+static int lattice_validate(Lattice_desc *desc, const char *fn)
+{
+	int ret_val = FALSE;
+
+	if (desc) {
+		if ((desc->family > min_lattice_type) &&
+			(desc->family < max_lattice_type)) {
+			if ((desc->iface > min_lattice_iface_type) &&
+				(desc->iface < max_lattice_iface_type)) {
+				if (desc->size) {
+					ret_val = TRUE;
+				} else {
+					printf("%s: NULL part size\n", fn);
+				}
+			} else {
+				printf("%s: Invalid Interface type, %d\n",
+					fn, desc->iface);
+			}
+		} else {
+			printf("%s: Invalid family type, %d\n",
+				fn, desc->family);
+		}
+	} else {
+		printf("%s: NULL descriptor!\n", fn);
+	}
+
+	return ret_val;
+}
+
+int lattice_load(Lattice_desc *desc, void *buf, size_t bsize)
+{
+	int ret_val = FPGA_FAIL;
+
+	if (!lattice_validate(desc, (char *)__func__)) {
+		printf("%s: Invalid device descriptor\n", __func__);
+	} else {
+		pfns = desc->iface_fns;
+
+		switch (desc->family) {
+		case Lattice_XP2:
+			fpga_image = buf;
+			read_bytes = 0;
+			bufsize = bsize;
+			debug("%s: Launching the Lattice ISPVME Loader:"
+				" addr 0x%x size 0x%x...\n",
+				__func__, fpga_image, bufsize);
+			ret_val = ispVM();
+			if (ret_val)
+				printf("%s: error %d downloading FPGA image\n",
+					__func__, ret_val);
+			else
+				puts("FPGA downloaded successfully\n");
+			break;
+		default:
+			printf("%s: Unsupported family type, %d\n",
+					__func__, desc->family);
+		}
+	}
+
+	return ret_val;
+}
+
+int lattice_dump(Lattice_desc *desc, void *buf, size_t bsize)
+{
+	puts("Dump not supported for Lattice FPGA\n");
+
+	return FPGA_FAIL;
+
+}
+
+int lattice_info(Lattice_desc *desc)
+{
+	int ret_val = FPGA_FAIL;
+
+	if (lattice_validate(desc, (char *)__func__)) {
+		printf("Family:        \t");
+		switch (desc->family) {
+		case Lattice_XP2:
+			puts("XP2\n");
+			break;
+			/* Add new family types here */
+		default:
+			printf("Unknown family type, %d\n", desc->family);
+		}
+
+		puts("Interface type:\t");
+		switch (desc->iface) {
+		case lattice_jtag_mode:
+			puts("JTAG Mode\n");
+			break;
+			/* Add new interface types here */
+		default:
+			printf("Unsupported interface type, %d\n", desc->iface);
+		}
+
+		printf("Device Size:   \t%d bytes\n",
+				desc->size);
+
+		if (desc->iface_fns) {
+			printf("Device Function Table @ 0x%p\n",
+				desc->iface_fns);
+			switch (desc->family) {
+			case Lattice_XP2:
+				break;
+				/* Add new family types here */
+			default:
+				break;
+			}
+		} else {
+			puts("No Device Function Table.\n");
+		}
+
+		if (desc->desc)
+			printf("Model:         \t%s\n", desc->desc);
+
+		ret_val = FPGA_SUCCESS;
+	} else {
+		printf("%s: Invalid device descriptor\n", __func__);
+	}
+
+	return ret_val;
+}
+
+