Merge branch 'master' of git://www.denx.de/git/u-boot-mpc83xx

1 files changed, 188 insertions, 0 deletions

diff --git a/board/mvblm7/fpga.c b/board/mvblm7/fpga.c
new file mode 100644
index 000000000..a60af019a
--- /dev/null
+++ b/board/mvblm7/fpga.c
@@ -0,0 +1,188 @@
+/*
+ * (C) Copyright 2002
+ * Rich Ireland, Enterasys Networks, rireland@enterasys.com.
+ * Keith Outwater, keith_outwater@mvis.com.
+ *
+ * (C) Copyright 2008
+ * Andre Schwarz, Matrix Vision GmbH, andre.schwarz@matrix-vision.de
+ *
+ * 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 <ACEX1K.h>
+#include <command.h>
+#include "fpga.h"
+#include "mvblm7.h"
+
+#ifdef FPGA_DEBUG
+#define fpga_debug(fmt, args...)      printf("%s: "fmt, __func__, ##args)
+#else
+#define fpga_debug(fmt, args...)
+#endif
+
+Altera_CYC2_Passive_Serial_fns altera_fns = {
+	fpga_null_fn,
+	fpga_config_fn,
+	fpga_status_fn,
+	fpga_done_fn,
+	fpga_wr_fn,
+	fpga_null_fn,
+	fpga_null_fn,
+	0
+};
+
+Altera_desc cyclone2 = {
+	Altera_CYC2,
+	passive_serial,
+	Altera_EP2C20_SIZE,
+	(void *) &altera_fns,
+	NULL,
+	0
+};
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int mvblm7_init_fpga(void)
+{
+	fpga_debug("Initialize FPGA interface (reloc 0x%.8lx)\n",
+		gd->reloc_off);
+	fpga_init(gd->reloc_off);
+	fpga_add(fpga_altera, &cyclone2);
+	fpga_config_fn(0, 1, 0);
+	udelay(60);
+
+	return 1;
+}
+
+int fpga_null_fn(int cookie)
+{
+	return 0;
+}
+
+int fpga_config_fn(int assert, int flush, int cookie)
+{
+	volatile immap_t *im = (volatile immap_t *)CFG_IMMR;
+	volatile gpio83xx_t *gpio = (volatile gpio83xx_t *)&im->gpio[0];
+	u32 dvo = gpio->dat;
+
+	fpga_debug("SET config : %s\n", assert ? "low" : "high");
+	if (assert)
+		dvo |= FPGA_CONFIG;
+	else
+		dvo &= ~FPGA_CONFIG;
+
+	if (flush)
+		gpio->dat = dvo;
+
+	return assert;
+}
+
+int fpga_done_fn(int cookie)
+{
+	volatile immap_t *im = (volatile immap_t *)CFG_IMMR;
+	volatile gpio83xx_t *gpio = (volatile gpio83xx_t *)&im->gpio[0];
+	int result = 0;
+
+	udelay(10);
+	fpga_debug("CONF_DONE check ... ");
+	if (gpio->dat & FPGA_CONF_DONE)  {
+		fpga_debug("high\n");
+		result = 1;
+	} else
+		fpga_debug("low\n");
+
+	return result;
+}
+
+int fpga_status_fn(int cookie)
+{
+	volatile immap_t *im = (volatile immap_t *)CFG_IMMR;
+	volatile gpio83xx_t *gpio = (volatile gpio83xx_t *)&im->gpio[0];
+	int result = 0;
+
+	fpga_debug("STATUS check ... ");
+	if (gpio->dat & FPGA_STATUS)  {
+		fpga_debug("high\n");
+		result = 1;
+	} else
+		fpga_debug("low\n");
+
+	return result;
+}
+
+int fpga_clk_fn(int assert_clk, int flush, int cookie)
+{
+	volatile immap_t *im = (volatile immap_t *)CFG_IMMR;
+	volatile gpio83xx_t *gpio = (volatile gpio83xx_t *)&im->gpio[0];
+	u32 dvo = gpio->dat;
+
+	fpga_debug("CLOCK %s\n", assert_clk ? "high" : "low");
+	if (assert_clk)
+		dvo |= FPGA_CCLK;
+	else
+		dvo &= ~FPGA_CCLK;
+
+	if (flush)
+		gpio->dat = dvo;
+
+	return assert_clk;
+}
+
+static inline int _write_fpga(u8 val, int dump)
+{
+	volatile immap_t *im = (volatile immap_t *)CFG_IMMR;
+	volatile gpio83xx_t *gpio = (volatile gpio83xx_t *)&im->gpio[0];
+	int i;
+	u32 dvo = gpio->dat;
+
+	if (dump)
+		fpga_debug("  %02x -> ", val);
+	for (i = 0; i < 8; i++) {
+		dvo &= ~FPGA_CCLK;
+		gpio->dat = dvo;
+		dvo &= ~FPGA_DIN;
+		if (dump)
+			fpga_debug("%d ", val&1);
+		if (val & 1)
+			dvo |= FPGA_DIN;
+		gpio->dat = dvo;
+		dvo |= FPGA_CCLK;
+		gpio->dat = dvo;
+		val >>= 1;
+	}
+	if (dump)
+		fpga_debug("\n");
+
+	return 0;
+}
+
+int fpga_wr_fn(void *buf, size_t len, int flush, int cookie)
+{
+	unsigned char *data = (unsigned char *) buf;
+	int i;
+
+	fpga_debug("fpga_wr: buf %p / size %d\n", buf, len);
+	for (i = 0; i < len; i++)
+		_write_fpga(data[i], 0);
+	fpga_debug("\n");
+
+	return FPGA_SUCCESS;
+}