From: Franck Jullien <franck.jullien@xxxxxxxxx>
Add Altera JTAG UART driver
I removed the CONFIG_ALTERA_JTAG_UART_BYPASS.
Signed-off-by: Franck Jullien <franck.jullien@xxxxxxxxx>
---
drivers/serial/Kconfig | 5 ++
drivers/serial/Makefile | 1 +
drivers/serial/serial_altera_jtag.c | 102 +++++++++++++++++++++++++++++++++++
3 files changed, 108 insertions(+), 0 deletions(-)
create mode 100644 drivers/serial/serial_altera_jtag.c
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 9e05f4b..b8ae475 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -48,6 +48,11 @@ config DRIVER_SERIAL_ALTERA
default y
bool "Altera serial driver"
+config DRIVER_SERIAL_ALTERA_JTAG
+ depends on NIOS2
+ default n
+ bool "Altera JTAG serial driver"
+
config DRIVER_SERIAL_NS16550
default n
bool "NS16550 serial driver"
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index df9e705..8b56d15 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -17,3 +17,4 @@ obj-$(CONFIG_DRIVER_SERIAL_NS16550) += serial_ns16550.o
obj-$(CONFIG_DRIVER_SERIAL_PL010) += serial_pl010.o
obj-$(CONFIG_DRIVER_SERIAL_S3C24X0) += serial_s3c24x0.o
obj-$(CONFIG_DRIVER_SERIAL_ALTERA) += serial_altera.o
+obj-$(CONFIG_DRIVER_SERIAL_ALTERA_JTAG) += serial_altera_jtag.o
diff --git a/drivers/serial/serial_altera_jtag.c b/drivers/serial/serial_altera_jtag.c
new file mode 100644
index 0000000..73d4bf8
--- /dev/null
+++ b/drivers/serial/serial_altera_jtag.c
@@ -0,0 +1,102 @@
+/*
+ * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
+ * Scott McNutt <smcnutt@xxxxxxxxxx>
+ *
+ * (C) Copyright 2011 - Franck JULLIEN <elec4fun@xxxxxxxxx>
+ *
+ * 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 <driver.h>
+#include <init.h>
+#include <malloc.h>
+#include <asm/io.h>
+#include <asm/nios2-io.h>
+
+static int altera_serial_jtag_setbaudrate(struct console_device *cdev, int baudrate)
+{
+ return 0;
+}
+
+static void altera_serial_jtag_putc(struct console_device *cdev, char c)
+{
+ struct nios_jtag *jtag = (struct nios_jtag *)cdev->dev->map_base;
+ uint32_t st;
+
+ while (1) {
+ st = readl(&jtag->control);
+ if (NIOS_JTAG_WSPACE(st))
+ break;
+ }
+
+ writel(c, &jtag->data);
+}
+
+static int altera_serial_jtag_tstc(struct console_device *cdev)
+{
+ struct nios_jtag *jtag = (struct nios_jtag *)cdev->dev->map_base;
+
+ return readl(&jtag->control) & NIOS_JTAG_RRDY;
+}
+
+static int altera_serial_jtag_getc(struct console_device *cdev)
+{
+ struct nios_jtag *jtag = (struct nios_jtag *)cdev->dev->map_base;
+ uint32_t val;
+
+ while (1) {
+ val = readl(&jtag->data);
+ if (val & NIOS_JTAG_RVALID)
+ break;
+ }
+
+ return val & 0xFF;
+}
+
+static int altera_serial_jtag_probe(struct device_d *dev) {
+
+ struct console_device *cdev;
+
+ cdev = malloc(sizeof(struct console_device));
+ dev->type_data = cdev;
+ cdev->dev = dev;
+ cdev->f_caps = CONSOLE_STDIN | CONSOLE_STDOUT | CONSOLE_STDERR;
+ cdev->tstc = altera_serial_jtag_tstc;
+ cdev->putc = altera_serial_jtag_putc;
+ cdev->getc = altera_serial_jtag_getc;
+ cdev->setbrg = altera_serial_jtag_setbaudrate;
+
+ console_register(cdev);
+
+ return 0;
+}
+
+static struct driver_d altera_serial_jtag_driver = {
+ .name = "altera_serial_jtag",
+ .probe = altera_serial_jtag_probe,
+};
+
+static int altera_serial_jtag_init(void)
+{
+ return register_driver(&altera_serial_jtag_driver);
+}
+
+console_initcall(altera_serial_jtag_init);
+
--
1.7.0.4
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