1 files changed, 425 insertions, 0 deletions
diff --git a/board/astro/mcf5373l/fpga.c b/board/astro/mcf5373l/fpga.c
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+++ b/board/astro/mcf5373l/fpga.c
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+/*
+ * (C) Copyright 2006
+ * Wolfgang Wegner, ASTRO Strobel Kommunikationssysteme GmbH,
+ * w.wegner@astro-kom.de
+ *
+ * based on the files by
+ * Heiko Schocher, DENX Software Engineering, hs@denx.de
+ * and
+ * Rich Ireland, Enterasys Networks, rireland@enterasys.com.
+ * Keith Outwater, keith_outwater@mvis.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
+ *
+ */
+
+/* Altera/Xilinx FPGA configuration support for the ASTRO "URMEL" board */
+
+#include <common.h>
+#include <watchdog.h>
+#include <altera.h>
+#include <ACEX1K.h>
+#include <spartan3.h>
+#include <command.h>
+#include <asm/immap_5329.h>
+#include <asm/io.h>
+#include "fpga.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int altera_pre_fn(int cookie)
+{
+	gpio_t *gpiop = (gpio_t *)MMAP_GPIO;
+	unsigned char tmp_char;
+	unsigned short tmp_short;
+
+	/* first, set the required pins to GPIO function */
+	/* PAR_T0IN -> GPIO */
+	tmp_char = readb(&gpiop->par_timer);
+	tmp_char &= 0xfc;
+	writeb(tmp_char, &gpiop->par_timer);
+	/* all QSPI pins -> GPIO */
+	writew(0x0000, &gpiop->par_qspi);
+	/* U0RTS, U0CTS -> GPIO */
+	tmp_short = __raw_readw(&gpiop->par_uart);
+	tmp_short &= 0xfff3;
+	__raw_writew(tmp_short, &gpiop->par_uart);
+	/* all PWM pins -> GPIO */
+	writeb(0x00, &gpiop->par_pwm);
+	/* next, set data direction registers */
+	writeb(0x01, &gpiop->pddr_timer);
+	writeb(0x25, &gpiop->pddr_qspi);
+	writeb(0x0c, &gpiop->pddr_uart);
+	writeb(0x04, &gpiop->pddr_pwm);
+
+	/* ensure other SPI peripherals are deselected */
+	writeb(0x08, &gpiop->ppd_uart);
+	writeb(0x38, &gpiop->ppd_qspi);
+
+	/* CONFIG = 0 STATUS = 0 -> FPGA in reset state */
+	writeb(0xFB, &gpiop->pclrr_uart);
+	/* enable Altera configuration by clearing QSPI_CS2 and DT0IN */
+	writeb(0xFE, &gpiop->pclrr_timer);
+	writeb(0xDF, &gpiop->pclrr_qspi);
+	return FPGA_SUCCESS;
+}
+
+/* Set the state of CONFIG Pin */
+int altera_config_fn(int assert_config, int flush, int cookie)
+{
+	gpio_t *gpiop = (gpio_t *)MMAP_GPIO;
+
+	if (assert_config)
+		writeb(0x04, &gpiop->ppd_uart);
+	else
+		writeb(0xFB, &gpiop->pclrr_uart);
+	return FPGA_SUCCESS;
+}
+
+/* Returns the state of STATUS Pin */
+int altera_status_fn(int cookie)
+{
+	gpio_t *gpiop = (gpio_t *)MMAP_GPIO;
+
+	if (readb(&gpiop->ppd_pwm) & 0x08)
+		return FPGA_FAIL;
+	return FPGA_SUCCESS;
+}
+
+/* Returns the state of CONF_DONE Pin */
+int altera_done_fn(int cookie)
+{
+	gpio_t *gpiop = (gpio_t *)MMAP_GPIO;
+
+	if (readb(&gpiop->ppd_pwm) & 0x20)
+		return FPGA_FAIL;
+	return FPGA_SUCCESS;
+}
+
+/*
+ * writes the complete buffer to the FPGA
+ * writing the complete buffer in one function is much faster,
+ * then calling it for every bit
+ */
+int altera_write_fn(void *buf, size_t len, int flush, int cookie)
+{
+	size_t bytecount = 0;
+	gpio_t *gpiop = (gpio_t *)MMAP_GPIO;
+	unsigned char *data = (unsigned char *)buf;
+	unsigned char val = 0;
+	int i;
+	int len_40 = len / 40;
+
+	while (bytecount < len) {
+		val = data[bytecount++];
+		i = 8;
+		do {
+			writeb(0xFB, &gpiop->pclrr_qspi);
+			if (val & 0x01)
+				writeb(0x01, &gpiop->ppd_qspi);
+			else
+				writeb(0xFE, &gpiop->pclrr_qspi);
+			writeb(0x04, &gpiop->ppd_qspi);
+			val >>= 1;
+			i--;
+		} while (i > 0);
+
+		if (bytecount % len_40 == 0) {
+#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
+			WATCHDOG_RESET();
+#endif
+#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
+			putc('.');	/* let them know we are alive */
+#endif
+#ifdef CONFIG_SYS_FPGA_CHECK_CTRLC
+			if (ctrlc())
+				return FPGA_FAIL;
+#endif
+		}
+	}
+	return FPGA_SUCCESS;
+}
+
+/* called, when programming is aborted */
+int altera_abort_fn(int cookie)
+{
+	gpio_t *gpiop = (gpio_t *)MMAP_GPIO;
+
+	writeb(0x20, &gpiop->ppd_qspi);
+	writeb(0x08, &gpiop->ppd_uart);
+	return FPGA_SUCCESS;
+}
+
+/* called, when programming was succesful */
+int altera_post_fn(int cookie)
+{
+	return altera_abort_fn(cookie);
+}
+
+/*
+ * Note that these are pointers to code that is in Flash. They will be
+ * relocated at runtime.
+ * FIXME: relocation not yet working for coldfire, see below!
+ */
+Altera_CYC2_Passive_Serial_fns altera_fns = {
+	altera_pre_fn,
+	altera_config_fn,
+	altera_status_fn,
+	altera_done_fn,
+	altera_write_fn,
+	altera_abort_fn,
+	altera_post_fn
+};
+
+Altera_desc altera_fpga[CONFIG_FPGA_COUNT] = {
+	{Altera_CYC2,
+	 passive_serial,
+	 85903,
+	 (void *)&altera_fns,
+	 NULL,
+	 0}
+};
+
+/* Initialize the fpga.  Return 1 on success, 0 on failure. */
+int astro5373l_altera_load(void)
+{
+	int i;
+
+	for (i = 0; i < CONFIG_FPGA_COUNT; i++) {
+		/*
+		 * I did not yet manage to get relocation work properly,
+		 * so set stuff here instead of static initialisation:
+		 */
+		altera_fns.pre = altera_pre_fn;
+		altera_fns.config = altera_config_fn;
+		altera_fns.status = altera_status_fn;
+		altera_fns.done = altera_done_fn;
+		altera_fns.write = altera_write_fn;
+		altera_fns.abort = altera_abort_fn;
+		altera_fns.post = altera_post_fn;
+		altera_fpga[i].iface_fns = (void *)&altera_fns;
+		fpga_add(fpga_altera, &altera_fpga[i]);
+	}
+	return 1;
+}
+
+/* Set the FPGA's PROG_B line to the specified level */
+int xilinx_pgm_fn(int assert, int flush, int cookie)
+{
+	gpio_t *gpiop = (gpio_t *)MMAP_GPIO;
+
+	if (assert)
+		writeb(0xFB, &gpiop->pclrr_uart);
+	else
+		writeb(0x04, &gpiop->ppd_uart);
+	return assert;
+}
+
+/*
+ * Test the state of the active-low FPGA INIT line.  Return 1 on INIT
+ * asserted (low).
+ */
+int xilinx_init_fn(int cookie)
+{
+	gpio_t *gpiop = (gpio_t *)MMAP_GPIO;
+
+	return (readb(&gpiop->ppd_pwm) & 0x08) == 0;
+}
+
+/* Test the state of the active-high FPGA DONE pin */
+int xilinx_done_fn(int cookie)
+{
+	gpio_t *gpiop = (gpio_t *)MMAP_GPIO;
+
+	return (readb(&gpiop->ppd_pwm) & 0x20) >> 5;
+}
+
+/* Abort an FPGA operation */
+int xilinx_abort_fn(int cookie)
+{
+	gpio_t *gpiop = (gpio_t *)MMAP_GPIO;
+	/* ensure all SPI peripherals and FPGAs are deselected */
+	writeb(0x08, &gpiop->ppd_uart);
+	writeb(0x01, &gpiop->ppd_timer);
+	writeb(0x38, &gpiop->ppd_qspi);
+	return FPGA_FAIL;
+}
+
+/*
+ * FPGA pre-configuration function. Just make sure that
+ * FPGA reset is asserted to keep the FPGA from starting up after
+ * configuration.
+ */
+int xilinx_pre_config_fn(int cookie)
+{
+	gpio_t *gpiop = (gpio_t *)MMAP_GPIO;
+	unsigned char tmp_char;
+	unsigned short tmp_short;
+
+	/* first, set the required pins to GPIO function */
+	/* PAR_T0IN -> GPIO */
+	tmp_char = readb(&gpiop->par_timer);
+	tmp_char &= 0xfc;
+	writeb(tmp_char, &gpiop->par_timer);
+	/* all QSPI pins -> GPIO */
+	writew(0x0000, &gpiop->par_qspi);
+	/* U0RTS, U0CTS -> GPIO */
+	tmp_short = __raw_readw(&gpiop->par_uart);
+	tmp_short &= 0xfff3;
+	__raw_writew(tmp_short, &gpiop->par_uart);
+	/* all PWM pins -> GPIO */
+	writeb(0x00, &gpiop->par_pwm);
+	/* next, set data direction registers */
+	writeb(0x01, &gpiop->pddr_timer);
+	writeb(0x25, &gpiop->pddr_qspi);
+	writeb(0x0c, &gpiop->pddr_uart);
+	writeb(0x04, &gpiop->pddr_pwm);
+
+	/* ensure other SPI peripherals are deselected */
+	writeb(0x08, &gpiop->ppd_uart);
+	writeb(0x38, &gpiop->ppd_qspi);
+	writeb(0x01, &gpiop->ppd_timer);
+
+	/* CONFIG = 0, STATUS = 0 -> FPGA in reset state */
+	writeb(0xFB, &gpiop->pclrr_uart);
+	/* enable Xilinx configuration by clearing QSPI_CS2 and U0CTS */
+	writeb(0xF7, &gpiop->pclrr_uart);
+	writeb(0xDF, &gpiop->pclrr_qspi);
+	return 0;
+}
+
+/*
+ * FPGA post configuration function. Should perform a test if FPGA is running.
+ */
+int xilinx_post_config_fn(int cookie)
+{
+	int rc = 0;
+
+	/*
+	 * no test yet
+	 */
+	return rc;
+}
+
+int xilinx_clk_fn(int assert_clk, int flush, int cookie)
+{
+	gpio_t *gpiop = (gpio_t *)MMAP_GPIO;
+
+	if (assert_clk)
+		writeb(0x04, &gpiop->ppd_qspi);
+	else
+		writeb(0xFB, &gpiop->pclrr_qspi);
+	return assert_clk;
+}
+
+int xilinx_wr_fn(int assert_write, int flush, int cookie)
+{
+	gpio_t *gpiop = (gpio_t *)MMAP_GPIO;
+
+	if (assert_write)
+		writeb(0x01, &gpiop->ppd_qspi);
+	else
+		writeb(0xFE, &gpiop->pclrr_qspi);
+	return assert_write;
+}
+
+int xilinx_fastwr_fn(void *buf, size_t len, int flush, int cookie)
+{
+	size_t bytecount = 0;
+	gpio_t *gpiop = (gpio_t *)MMAP_GPIO;
+	unsigned char *data = (unsigned char *)buf;
+	unsigned char val = 0;
+	int i;
+	int len_40 = len / 40;
+
+	for (bytecount = 0; bytecount < len; bytecount++) {
+		val = *(data++);
+		for (i = 8; i > 0; i--) {
+			writeb(0xFB, &gpiop->pclrr_qspi);
+			if (val & 0x80)
+				writeb(0x01, &gpiop->ppd_qspi);
+			else
+				writeb(0xFE, &gpiop->pclrr_qspi);
+			writeb(0x04, &gpiop->ppd_qspi);
+			val <<= 1;
+		}
+		if (bytecount % len_40 == 0) {
+#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
+			WATCHDOG_RESET();
+#endif
+#ifdef CONFIG_SYS_FPGA_PROG_FEEDBACK
+			putc('.');	/* let them know we are alive */
+#endif
+#ifdef CONFIG_SYS_FPGA_CHECK_CTRLC
+			if (ctrlc())
+				return FPGA_FAIL;
+#endif
+		}
+	}
+	return FPGA_SUCCESS;
+}
+
+/*
+ * Note that these are pointers to code that is in Flash.  They will be
+ * relocated at runtime.
+ * FIXME: relocation not yet working for coldfire, see below!
+ */
+Xilinx_Spartan3_Slave_Serial_fns xilinx_fns = {
+	xilinx_pre_config_fn,
+	xilinx_pgm_fn,
+	xilinx_clk_fn,
+	xilinx_init_fn,
+	xilinx_done_fn,
+	xilinx_wr_fn,
+	0,
+	xilinx_fastwr_fn
+};
+
+Xilinx_desc xilinx_fpga[CONFIG_FPGA_COUNT] = {
+	{Xilinx_Spartan3,
+	 slave_serial,
+	 XILINX_XC3S4000_SIZE,
+	 (void *)&xilinx_fns,
+	 0}
+};
+
+/* Initialize the fpga.  Return 1 on success, 0 on failure. */
+int astro5373l_xilinx_load(void)
+{
+	int i;
+
+	fpga_init();
+
+	for (i = 0; i < CONFIG_FPGA_COUNT; i++) {
+		/*
+		 * I did not yet manage to get relocation work properly,
+		 * so set stuff here instead of static initialisation:
+		 */
+		xilinx_fns.pre = xilinx_pre_config_fn;
+		xilinx_fns.pgm = xilinx_pgm_fn;
+		xilinx_fns.clk = xilinx_clk_fn;
+		xilinx_fns.init = xilinx_init_fn;
+		xilinx_fns.done = xilinx_done_fn;
+		xilinx_fns.wr = xilinx_wr_fn;
+		xilinx_fns.bwr = xilinx_fastwr_fn;
+		xilinx_fpga[i].iface_fns = (void *)&xilinx_fns;
+		fpga_add(fpga_xilinx, &xilinx_fpga[i]);
+	}
+	return 1;
+}