[U-Boot] [PATCH 3/3] MX31: Add support to update FPGA bitstream
Stefano Babic
sbabic at denx.de
Thu Oct 7 10:59:48 CEST 2010
The patch adds the possibility to update the QONG
FPGA (a Lattice XP2-5E) with u-boot using some GPIOs
to drive the JTAG interface.
Signed-off-by: Stefano Babic <sbabic at denx.de>
---
board/davedenx/qong/Makefile | 2 +-
board/davedenx/qong/fpga.c | 95 +++++++++++++++++++++++++++++++++++++++
board/davedenx/qong/qong.c | 11 +++++
board/davedenx/qong/qong_fpga.h | 3 +-
include/configs/qong.h | 3 +
5 files changed, 111 insertions(+), 3 deletions(-)
create mode 100644 board/davedenx/qong/fpga.c
diff --git a/board/davedenx/qong/Makefile b/board/davedenx/qong/Makefile
index 93e1985..ada6e03 100644
--- a/board/davedenx/qong/Makefile
+++ b/board/davedenx/qong/Makefile
@@ -27,7 +27,7 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(BOARD).a
-COBJS := qong.o
+COBJS := qong.o fpga.o
SOBJS := lowlevel_init.o
SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c)
diff --git a/board/davedenx/qong/fpga.c b/board/davedenx/qong/fpga.c
new file mode 100644
index 0000000..f865eb4
--- /dev/null
+++ b/board/davedenx/qong/fpga.c
@@ -0,0 +1,95 @@
+/*
+ * (C) Copyright 2010
+ * Stefano Babic, DENX Software Engineering, sbabic at denx.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 <asm/arch/mx31.h>
+#include <asm/arch/mx31-regs.h>
+#include <mxc_gpio.h>
+#include <fpga.h>
+#include <lattice.h>
+#include "qong_fpga.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#if defined(CONFIG_FPGA)
+
+static void qong_jtag_init(void)
+{
+ return;
+}
+
+static void qong_fpga_jtag_set_tdi(int value)
+{
+ mxc_gpio_set(QONG_FPGA_TDI_PIN, value);
+}
+
+static void qong_fpga_jtag_set_tms(int value)
+{
+ mxc_gpio_set(QONG_FPGA_TMS_PIN, value);
+}
+
+static void qong_fpga_jtag_set_tck(int value)
+{
+ mxc_gpio_set(QONG_FPGA_TCK_PIN, value);
+}
+
+static int qong_fpga_jtag_get_tdo(void)
+{
+ return mxc_gpio_get(QONG_FPGA_TDO_PIN);
+}
+
+lattice_board_specific_func qong_fpga_fns = {
+ qong_jtag_init,
+ qong_fpga_jtag_set_tdi,
+ qong_fpga_jtag_set_tms,
+ qong_fpga_jtag_set_tck,
+ qong_fpga_jtag_get_tdo
+};
+
+Lattice_desc qong_fpga[CONFIG_FPGA_COUNT] = {
+ {
+ Lattice_XP2,
+ lattice_jtag_mode,
+ 356519,
+ (void *) &qong_fpga_fns,
+ NULL,
+ 0,
+ "lfxp2_5e_ftbga256"
+ },
+};
+
+int qong_fpga_init(void)
+{
+ int i;
+
+ fpga_init();
+
+ for (i = 0; i < CONFIG_FPGA_COUNT; i++) {
+ fpga_add(fpga_lattice, &qong_fpga[i]);
+ }
+ return 0;
+}
+
+#endif
+
diff --git a/board/davedenx/qong/qong.c b/board/davedenx/qong/qong.c
index 9abc29c..efeb0bb 100644
--- a/board/davedenx/qong/qong.c
+++ b/board/davedenx/qong/qong.c
@@ -73,6 +73,15 @@ int board_early_init_f (void)
/* set interrupt pin as input */
mxc_gpio_direction(QONG_FPGA_IRQ_PIN, MXC_GPIO_DIRECTION_IN);
+ /* FPGA JTAG Interface */
+ mx31_gpio_mux(IOMUX_MODE(MUX_CTL_SFS6, MUX_CTL_GPIO));
+ mx31_gpio_mux(IOMUX_MODE(MUX_CTL_SCK6, MUX_CTL_GPIO));
+ mx31_gpio_mux(IOMUX_MODE(MUX_CTL_CAPTURE, MUX_CTL_GPIO));
+ mx31_gpio_mux(IOMUX_MODE(MUX_CTL_COMPARE, MUX_CTL_GPIO));
+ mxc_gpio_direction(QONG_FPGA_TCK_PIN, MXC_GPIO_DIRECTION_OUT);
+ mxc_gpio_direction(QONG_FPGA_TMS_PIN, MXC_GPIO_DIRECTION_OUT);
+ mxc_gpio_direction(QONG_FPGA_TDI_PIN, MXC_GPIO_DIRECTION_OUT);
+ mxc_gpio_direction(QONG_FPGA_TDO_PIN, MXC_GPIO_DIRECTION_IN);
#endif
/* setup pins for UART1 */
@@ -146,6 +155,8 @@ int board_init (void)
gd->bd->bi_arch_number = MACH_TYPE_QONG;
gd->bd->bi_boot_params = (0x80000100); /* adress of boot parameters */
+ qong_fpga_init();
+
return 0;
}
diff --git a/board/davedenx/qong/qong_fpga.h b/board/davedenx/qong/qong_fpga.h
index 4e11f5a..4e79ac2 100644
--- a/board/davedenx/qong/qong_fpga.h
+++ b/board/davedenx/qong/qong_fpga.h
@@ -24,7 +24,6 @@
#ifndef QONG_FPGA_H
#define QONG_FPGA_H
-#ifdef CONFIG_QONG_FPGA
#define QONG_FPGA_CTRL_BASE CONFIG_FPGA_BASE
#define QONG_FPGA_CTRL_VERSION (QONG_FPGA_CTRL_BASE + 0x00000000)
#define QONG_FPGA_PERIPH_SIZE (1 << 24)
@@ -35,6 +34,6 @@
#define QONG_FPGA_TDO_PIN 7
#define QONG_FPGA_RST_PIN 48
#define QONG_FPGA_IRQ_PIN 40
-#endif
+int qong_fpga_init(void);
#endif /* QONG_FPGA_H */
diff --git a/include/configs/qong.h b/include/configs/qong.h
index 7cd9558..2d124ea 100644
--- a/include/configs/qong.h
+++ b/include/configs/qong.h
@@ -66,8 +66,11 @@
#define CONFIG_FSL_PMIC_MODE (SPI_MODE_2 | SPI_CS_HIGH)
/* FPGA */
+#define CONFIG_FPGA
#define CONFIG_QONG_FPGA 1
#define CONFIG_FPGA_BASE (CS1_BASE)
+#define CONFIG_FPGA_LATTICE
+#define CONFIG_FPGA_COUNT 1
#ifdef CONFIG_QONG_FPGA
/* Ethernet */
--
1.6.3.3
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