AR7: AR7 strikes back

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new file mode 100644
index 0000000..4be2895
@@ -0,0 +1,32 @@
+/*
+ * Carsten Langgaard, [email protected]
+ * Copyright (C) 1999,2000 MIPS Technologies, Inc.  All rights reserved.
+ *
+ *  This program is free software; you can distribute it and/or modify it
+ *  under the terms of the GNU General Public License (Version 2) as
+ *  published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope 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.
+ *
+ * Setting up the clock on the MIPS boards.
+ */
+
+#include <asm/time.h>
+#include <asm/ar7/ar7.h>
+
+void __init ar7_time_init(void)
+{
+	mips_hpt_frequency = ar7_cpu_freq() / 2;
+}
+
+void __init plat_timer_setup(struct irqaction *irq)
+{
+	setup_irq(7, irq);
+}

index 632bce1..3795c06 100644
@@ -1076,9 +1076,22 @@ void *set_except_vector(int n, void *addr)
 
 	exception_handlers[n] = handler;
 	if (n == 0 && cpu_has_divec) {
-		*(u32 *)(ebase + 0x200) = 0x08000000 |
-					  (0x03ffffff & (handler >> 2));
-		flush_icache_range(ebase + 0x200, ebase + 0x204);
+		if ((handler ^ (ebase + 4)) & 0xfc000000) {
+			/* lui k0, 0x0000 */
+			*(u32 *)(ebase + 0x200) = 0x3c1a0000 | (handler >> 16);
+			/* ori k0, 0x0000 */
+			*(u32 *)(ebase + 0x204) =
+					0x375a0000 | (handler & 0xffff);
+			/* jr k0 */
+			*(u32 *)(ebase + 0x208) = 0x03400008;
+			/* nop */
+			*(u32 *)(ebase + 0x20C) = 0x00000000;
+			flush_icache_range(ebase + 0x200, ebase + 0x210);
+		} else {
+			*(volatile u32 *)(ebase + 0x200) =
+				0x08000000 | (0x03ffffff & (handler >> 2));
+			flush_icache_range(ebase + 0x200, ebase + 0x204);
+		}
 	}
 	return (void *)old_handler;
 }

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new file mode 100644
index 0000000..39e9757
@@ -0,0 +1,16 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Shamelessly copied from asm-mips/mach-emma2rh/
+ * Copyright (C) 2003 by Ralf Baechle
+ */
+#ifndef __ASM_AR7_IRQ_H
+#define __ASM_AR7_IRQ_H
+
+#define NR_IRQS	256
+
+#include_next <irq.h>
+
+#endif /* __ASM_AR7_IRQ_H */

new file mode 100644
index 0000000..62d7d5c
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2006, 2007 Florian Fainelli <[email protected]>
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef __PROM_H__
+#define __PROM_H__
+
+extern char *prom_getenv(char *name);
+extern void prom_printf(char *fmt, ...);
+
+#endif /* __PROM_H__ */

new file mode 100644
index 0000000..f4d1237
@@ -0,0 +1,32 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1994 - 1999, 2000, 03, 04 Ralf Baechle
+ * Copyright (C) 2000, 2002  Maciej W. Rozycki
+ * Copyright (C) 1990, 1999, 2000 Silicon Graphics, Inc.
+ */
+#ifndef _ASM_AR7_SPACES_H
+#define _ASM_AR7_SPACES_H
+
+#define CAC_BASE		0x80000000
+#define IO_BASE			0xa0000000
+#define UNCAC_BASE		0xa0000000
+#define MAP_BASE		0xc0000000
+
+/*
+ * This handles the memory map.
+ * We handle pages at KSEG0 for kernels with 32 bit address space.
+ */
+#define PAGE_OFFSET		0x94000000UL
+#define PHYS_OFFSET		0x14000000UL
+
+/*
+ * Memory above this physical address will be considered highmem.
+ */
+#ifndef HIGHMEM_START
+#define HIGHMEM_START		0x40000000UL
+#endif
+
+#endif /* __ASM_AR7_SPACES_H */

index d2ea983..8fda483 100644
@@ -184,8 +184,10 @@ typedef struct { unsigned long pgprot; } pgprot_t;
 #define VM_DATA_DEFAULT_FLAGS	(VM_READ | VM_WRITE | VM_EXEC | \
 				 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
 
-#define UNCAC_ADDR(addr)	((addr) - PAGE_OFFSET + UNCAC_BASE)
-#define CAC_ADDR(addr)		((addr) - UNCAC_BASE + PAGE_OFFSET)
+#define UNCAC_ADDR(addr)	((addr) - PAGE_OFFSET + UNCAC_BASE +	\
+				 PHYS_OFFSET)
+#define CAC_ADDR(addr)		((addr) - UNCAC_BASE + PAGE_OFFSET -	\
+				 PHYS_OFFSET)
 
 #include <asm-generic/memory_model.h>
 #include <asm-generic/page.h>

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index f94109c..94253b7 100644
@@ -267,6 +267,13 @@ static const struct serial8250_config uart_config[] = {
 		.fcr		= UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_10,
 		.flags		= UART_CAP_FIFO,
 	},
+	[PORT_AR7] = {
+		.name		= "TI-AR7",
+		.fifo_size	= 16,
+		.tx_loadsz	= 16,
+		.fcr		= UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_00,
+		.flags		= UART_CAP_FIFO | UART_CAP_AFE,
+	},
 };
 
 #if defined (CONFIG_SERIAL_8250_AU1X00)

@@ -2453,7 +2460,11 @@ static void serial8250_console_putchar(struct uart_port *port, int ch)
 {
 	struct uart_8250_port *up = (struct uart_8250_port *)port;
 
+#ifdef CONFIG_AR7
+	wait_for_xmitr(up, BOTH_EMPTY);
+#else
 	wait_for_xmitr(up, UART_LSR_THRE);
+#endif
 	serial_out(up, UART_TX, ch);
 }
 

index e811a61..cf71de9 100644
@@ -135,6 +135,10 @@ struct rs_multiport_struct {
  * the interrupt line _up_ instead of down, so if we register the IRQ
  * while the UART is in that state, we die in an IRQ storm. */
 #define ALPHA_KLUDGE_MCR (UART_MCR_OUT2)
+#elif defined(CONFIG_AR7)
+/* This is how it is set up by bootloader... */
+#define ALPHA_KLUDGE_MCR (UART_MCR_OUT2 | UART_MCR_OUT1 \
+			| UART_MCR_RTS | UART_MCR_DTR)
 #else
 #define ALPHA_KLUDGE_MCR 0
 #endif

index 09d17b0..8ad2c3b 100644
@@ -40,6 +40,7 @@
 #define PORT_NS16550A	14
 #define PORT_XSCALE	15
 #define PORT_RM9000	16	/* PMC-Sierra RM9xxx internal UART */
+#define PORT_AR7	16
 #define PORT_MAX_8250	16	/* max port ID */
 
 /*

new file mode 100644
index 0000000..72b958a
@@ -0,0 +1,130 @@
+/*
+ * Copyright (C) 2007 Nicolas Thill <[email protected]>
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/leds.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <gpio.h>
+
+#define DRVNAME "ar7-leds"
+#define LONGNAME "TI AR7 LEDs driver"
+#define AR7_GPIO_BIT_STATUS_LED 8
+
+MODULE_AUTHOR("Nicolas Thill <[email protected]>");
+MODULE_DESCRIPTION(LONGNAME);
+MODULE_LICENSE("GPL");
+
+static void ar7_status_led_set(struct led_classdev *pled,
+		enum led_brightness value)
+{
+	gpio_set_value(AR7_GPIO_BIT_STATUS_LED, value ? 0 : 1);
+}
+
+static struct led_classdev ar7_status_led = {
+	.name		= "ar7:status",
+	.brightness_set	= ar7_status_led_set,
+};
+
+#ifdef CONFIG_PM
+static int ar7_leds_suspend(struct platform_device *dev,
+		pm_message_t state)
+{
+	led_classdev_suspend(&ar7_status_led);
+	return 0;
+}
+
+static int ar7_leds_resume(struct platform_device *dev)
+{
+	led_classdev_resume(&ar7_status_led);
+	return 0;
+}
+#else /* CONFIG_PM */
+#define ar7_leds_suspend NULL
+#define ar7_leds_resume NULL
+#endif /* CONFIG_PM */
+
+static int ar7_leds_probe(struct platform_device *pdev)
+{
+	int rc;
+
+	rc = led_classdev_register(&pdev->dev, &ar7_status_led);
+	if (rc < 0)
+		goto out;
+
+	ar7_gpio_enable(AR7_GPIO_BIT_STATUS_LED);
+	gpio_direction_output(AR7_GPIO_BIT_STATUS_LED, 0);
+
+out:
+	return rc;
+}
+
+static int ar7_leds_remove(struct platform_device *pdev)
+{
+	led_classdev_unregister(&ar7_status_led);
+
+	return 0;
+}
+
+static struct platform_device *ar7_leds_device;
+
+static struct platform_driver ar7_leds_driver = {
+	.probe		= ar7_leds_probe,
+	.remove		= ar7_leds_remove,
+	.suspend	= ar7_leds_suspend,
+	.resume		= ar7_leds_resume,
+	.driver		= {
+		.name		= DRVNAME,
+	},
+};
+
+static int __init ar7_leds_init(void)
+{
+	int rc;
+
+	ar7_leds_device = platform_device_alloc(DRVNAME, -1);
+	if (!ar7_leds_device)
+		return -ENOMEM;
+
+	rc = platform_device_add(ar7_leds_device);
+	if (rc < 0)
+		goto out_put;
+
+	rc = platform_driver_register(&ar7_leds_driver);
+	if (rc < 0)
+		goto out_put;
+
+	goto out;
+
+out_put:
+	platform_device_put(ar7_leds_device);
+out:
+	return rc;
+}
+
+static void __exit ar7_leds_exit(void)
+{
+	platform_driver_unregister(&ar7_leds_driver);
+	platform_device_unregister(ar7_leds_device);
+}
+
+module_init(ar7_leds_init);
+module_exit(ar7_leds_exit);