[PATCH] ARM: 2686/2: AAEC-2000 Core support

Patch from Bellido Nicolas

Core support for AAEC-2000 based platforms.
This is an updated version of the previous patch, and takes
into account Russell's comments.
AAED-2000 default configuration will follow as soon
as some problems with the bootloader are sorted out...

Signed-off-by: Nicolas Bellido
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

21 files changed, 794 insertions, 1 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 1a1773f8139..efdb12d7356 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -198,6 +198,11 @@ config ARCH_H720X
 	help
 	  This enables support for systems based on the Hynix HMS720x
 
+config ARCH_AAEC2000
+	bool "Agilent AAEC-2000 based"
+	help
+	  This enables support for systems based on the Agilent AAEC-2000
+
 endchoice
 
 source "arch/arm/mach-clps711x/Kconfig"
@@ -230,6 +235,8 @@ source "arch/arm/mach-h720x/Kconfig"
 
 source "arch/arm/mach-versatile/Kconfig"
 
+source "arch/arm/mach-aaec2000/Kconfig"
+
 # Definitions to make life easier
 config ARCH_ACORN
 	bool
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 2277e3d179c..8330495e244 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -97,6 +97,7 @@ textaddr-$(CONFIG_ARCH_FORTUNET)   := 0xc0008000
  machine-$(CONFIG_ARCH_VERSATILE)  := versatile
  machine-$(CONFIG_ARCH_IMX)	   := imx
  machine-$(CONFIG_ARCH_H720X)	   := h720x
+ machine-$(CONFIG_ARCH_AAEC2000)   := aaec2000
 
 ifeq ($(CONFIG_ARCH_EBSA110),y)
 # This is what happens if you forget the IOCS16 line.
diff --git a/arch/arm/mach-aaec2000/Kconfig b/arch/arm/mach-aaec2000/Kconfig
new file mode 100644
index 00000000000..5e4bef93754
--- /dev/null
+++ b/arch/arm/mach-aaec2000/Kconfig
@@ -0,0 +1,11 @@
+if ARCH_AAEC2000
+
+menu "Agilent AAEC-2000 Implementations"
+
+config MACH_AAED2000
+	bool "Agilent AAED-2000 Development Platform"
+	select CPU_ARM920T
+
+endmenu
+
+endif
diff --git a/arch/arm/mach-aaec2000/Makefile b/arch/arm/mach-aaec2000/Makefile
new file mode 100644
index 00000000000..20ec83896c3
--- /dev/null
+++ b/arch/arm/mach-aaec2000/Makefile
@@ -0,0 +1,9 @@
+#
+# Makefile for the linux kernel.
+#
+
+# Common support (must be linked before board specific support)
+obj-y += core.o
+
+# Specific board support
+obj-$(CONFIG_MACH_AAED2000) += aaed2000.o
diff --git a/arch/arm/mach-aaec2000/aaed2000.c b/arch/arm/mach-aaec2000/aaed2000.c
new file mode 100644
index 00000000000..5417ca3f462
--- /dev/null
+++ b/arch/arm/mach-aaec2000/aaed2000.c
@@ -0,0 +1,48 @@
+/*
+ *  linux/arch/arm/mach-aaec2000/aaed2000.c
+ *
+ *  Support for the Agilent AAED-2000 Development Platform.
+ *
+ *  Copyright (c) 2005 Nicolas Bellido Y Ortega
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ */
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/major.h>
+#include <linux/interrupt.h>
+
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <asm/mach-types.h>
+#include <asm/hardware.h>
+#include <asm/irq.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+
+#include "core.h"
+
+static void __init aaed2000_init_irq(void)
+{
+	aaec2000_init_irq();
+}
+
+static void __init aaed2000_map_io(void)
+{
+	aaec2000_map_io();
+}
+
+MACHINE_START(AAED2000, "Agilent AAED-2000 Development Platform")
+	MAINTAINER("Nicolas Bellido Y Ortega")
+	BOOT_MEM(0xf0000000, PIO_BASE, VIO_BASE)
+	MAPIO(aaed2000_map_io)
+	INITIRQ(aaed2000_init_irq)
+	.timer		= &aaec2000_timer,
+MACHINE_END
diff --git a/arch/arm/mach-aaec2000/core.c b/arch/arm/mach-aaec2000/core.c
new file mode 100644
index 00000000000..fc145b3768f
--- /dev/null
+++ b/arch/arm/mach-aaec2000/core.c
@@ -0,0 +1,157 @@
+/*
+ *  linux/arch/arm/mach-aaec2000/core.c
+ *
+ *  Code common to all AAEC-2000 machines
+ *
+ *  Copyright (c) 2005 Nicolas Bellido Y Ortega
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/timex.h>
+#include <linux/signal.h>
+
+#include <asm/hardware.h>
+#include <asm/irq.h>
+
+#include <asm/mach/irq.h>
+#include <asm/mach/time.h>
+#include <asm/mach/map.h>
+
+/*
+ * Common I/O mapping:
+ *
+ * Static virtual address mappings are as follow:
+ *
+ * 0xf8000000-0xf8001ffff: Devices connected to APB bus
+ * 0xf8002000-0xf8003ffff: Devices connected to AHB bus
+ *
+ * Below 0xe8000000 is reserved for vm allocation.
+ *
+ * The machine specific code must provide the extra mapping beside the
+ * default mapping provided here.
+ */
+static struct map_desc standard_io_desc[] __initdata = {
+ /* virtual         physical       length           type */
+  { VIO_APB_BASE,   PIO_APB_BASE,  IO_APB_LENGTH,   MT_DEVICE },
+  { VIO_AHB_BASE,   PIO_AHB_BASE,  IO_AHB_LENGTH,   MT_DEVICE }
+};
+
+void __init aaec2000_map_io(void)
+{
+	iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc));
+}
+
+/*
+ * Interrupt handling routines
+ */
+static void aaec2000_int_ack(unsigned int irq)
+{
+	IRQ_INTSR = 1 << irq;
+}
+
+static void aaec2000_int_mask(unsigned int irq)
+{
+	IRQ_INTENC |= (1 << irq);
+}
+
+static void aaec2000_int_unmask(unsigned int irq)
+{
+	IRQ_INTENS |= (1 << irq);
+}
+
+static struct irqchip aaec2000_irq_chip = {
+	.ack	= aaec2000_int_ack,
+	.mask	= aaec2000_int_mask,
+	.unmask	= aaec2000_int_unmask,
+};
+
+void __init aaec2000_init_irq(void)
+{
+	unsigned int i;
+
+	for (i = 0; i < NR_IRQS; i++) {
+		set_irq_handler(i, do_level_IRQ);
+		set_irq_chip(i, &aaec2000_irq_chip);
+		set_irq_flags(i, IRQF_VALID);
+	}
+
+	/* Disable all interrupts */
+	IRQ_INTENC = 0xffffffff;
+
+	/* Clear any pending interrupts */
+	IRQ_INTSR = IRQ_INTSR;
+}
+
+/*
+ * Time keeping
+ */
+/* IRQs are disabled before entering here from do_gettimeofday() */
+static unsigned long aaec2000_gettimeoffset(void)
+{
+	unsigned long ticks_to_match, elapsed, usec;
+
+	/* Get ticks before next timer match */
+	ticks_to_match = TIMER1_LOAD - TIMER1_VAL;
+
+	/* We need elapsed ticks since last match */
+	elapsed = LATCH - ticks_to_match;
+
+	/* Now, convert them to usec */
+	usec = (unsigned long)(elapsed * (tick_nsec / 1000))/LATCH;
+
+	return usec;
+}
+
+/* We enter here with IRQs enabled */
+static irqreturn_t
+aaec2000_timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	/* TODO: Check timer accuracy */
+	write_seqlock(&xtime_lock);
+
+	timer_tick(regs);
+	TIMER1_CLEAR = 1;
+
+	write_sequnlock(&xtime_lock);
+
+	return IRQ_HANDLED;
+}
+
+static struct irqaction aaec2000_timer_irq = {
+	.name		= "AAEC-2000 Timer Tick",
+	.flags		= SA_INTERRUPT,
+	.handler	= aaec2000_timer_interrupt
+};
+
+static void __init aaec2000_timer_init(void)
+{
+	/* Disable timer 1 */
+	TIMER1_CTRL = 0;
+
+	/* We have somehow to generate a 100Hz clock.
+	 * We then use the 508KHz timer in periodic mode.
+	 */
+	TIMER1_LOAD = LATCH;
+	TIMER1_CLEAR = 1; /* Clear interrupt */
+
+	setup_irq(INT_TMR1_OFL, &aaec2000_timer_irq);
+
+	TIMER1_CTRL = TIMER_CTRL_ENABLE |
+	                TIMER_CTRL_PERIODIC |
+	                TIMER_CTRL_CLKSEL_508K;
+}
+
+struct sys_timer aaec2000_timer = {
+	.init		= aaec2000_timer_init,
+	.offset		= aaec2000_gettimeoffset,
+};
+
diff --git a/arch/arm/mach-aaec2000/core.h b/arch/arm/mach-aaec2000/core.h
new file mode 100644
index 00000000000..91893d848c1
--- /dev/null
+++ b/arch/arm/mach-aaec2000/core.h
@@ -0,0 +1,16 @@
+/*
+ *  linux/arch/arm/mach-aaec2000/core.h
+ *
+ *  Copyright (c) 2005 Nicolas Bellido Y Ortega
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ */
+
+struct sys_timer;
+
+extern struct sys_timer aaec2000_timer;
+extern void __init aaec2000_map_io(void);
+extern void __init aaec2000_init_irq(void);
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 3fefb43c67f..95606b4a3ba 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -62,7 +62,7 @@ config CPU_ARM720T
 # ARM920T
 config CPU_ARM920T
 	bool "Support ARM920T processor" if !ARCH_S3C2410
-	depends on ARCH_INTEGRATOR || ARCH_S3C2410 || ARCH_IMX
+	depends on ARCH_INTEGRATOR || ARCH_S3C2410 || ARCH_IMX || ARCH_AAEC2000
 	default y if ARCH_S3C2410
 	select CPU_32v4
 	select CPU_ABRT_EV4T
diff --git a/include/asm-arm/arch-aaec2000/aaec2000.h b/include/asm-arm/arch-aaec2000/aaec2000.h
new file mode 100644
index 00000000000..0e9b7e18af0
--- /dev/null
+++ b/include/asm-arm/arch-aaec2000/aaec2000.h
@@ -0,0 +1,151 @@
+/*
+ *  linux/include/asm-arm/arch-aaec2000/aaec2000.h
+ *
+ *  AAEC-2000 registers definition
+ *
+ *  Copyright (c) 2005 Nicolas Bellido Y Ortega
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_AAEC2000_H
+#define __ASM_ARCH_AAEC2000_H
+
+#ifndef __ASM_ARCH_HARDWARE_H
+#error You must include hardware.h not this file
+#endif /* __ASM_ARCH_HARDWARE_H */
+
+/* Interrupt controller */
+#define IRQ_BASE	__REG(0x80000500)
+#define IRQ_INTSR	__REG(0x80000500)	/* Int Status Register */
+#define IRQ_INTRSR	__REG(0x80000504)	/* Int Raw (unmasked) Status */
+#define IRQ_INTENS	__REG(0x80000508)	/* Int Enable Set */
+#define IRQ_INTENC	__REG(0x8000050c)	/* Int Enable Clear */
+
+/* UART 1 */
+#define UART1_BASE	__REG(0x80000600)
+#define UART1_DR	__REG(0x80000600) /* Data/FIFO Register */
+#define UART1_LCR	__REG(0x80000604) /* Link Control Register */
+#define UART1_BRCR	__REG(0x80000608) /* Baud Rate Control Register */
+#define UART1_CR	__REG(0x8000060c) /* Control Register */
+#define UART1_SR	__REG(0x80000610) /* Status Register */
+#define UART1_INT	__REG(0x80000614) /* Interrupt Status Register */
+#define UART1_INTM	__REG(0x80000618) /* Interrupt Mask Register */
+#define UART1_INTRES	__REG(0x8000061c) /* Int Result (masked status) Register */
+
+/* UART 2 */
+#define UART2_BASE	__REG(0x80000700)
+#define UART2_DR	__REG(0x80000700) /* Data/FIFO Register */
+#define UART2_LCR	__REG(0x80000704) /* Link Control Register */
+#define UART2_BRCR	__REG(0x80000708) /* Baud Rate Control Register */
+#define UART2_CR	__REG(0x8000070c) /* Control Register */
+#define UART2_SR	__REG(0x80000710) /* Status Register */
+#define UART2_INT	__REG(0x80000714) /* Interrupt Status Register */
+#define UART2_INTM	__REG(0x80000718) /* Interrupt Mask Register */
+#define UART2_INTRES	__REG(0x8000071c) /* Int Result (masked status) Register */
+
+/* UART 3 */
+#define UART3_BASE	__REG(0x80000800)
+#define UART3_DR	__REG(0x80000800) /* Data/FIFO Register */
+#define UART3_LCR	__REG(0x80000804) /* Link Control Register */
+#define UART3_BRCR	__REG(0x80000808) /* Baud Rate Control Register */
+#define UART3_CR	__REG(0x8000080c) /* Control Register */
+#define UART3_SR	__REG(0x80000810) /* Status Register */
+#define UART3_INT	__REG(0x80000814) /* Interrupt Status Register */
+#define UART3_INTM	__REG(0x80000818) /* Interrupt Mask Register */
+#define UART3_INTRES	__REG(0x8000081c) /* Int Result (masked status) Register */
+
+/* These are used in some places */
+#define _UART1_BASE __PREG(UART1_BASE)
+#define _UART2_BASE __PREG(UART2_BASE)
+#define _UART3_BASE __PREG(UART3_BASE)
+
+/* UART Registers Offsets */
+#define UART_DR		0x00
+#define UART_LCR	0x04
+#define UART_BRCR	0x08
+#define UART_CR		0x0c
+#define UART_SR		0x10
+#define UART_INT	0x14
+#define UART_INTM	0x18
+#define UART_INTRES	0x1c
+
+/* UART_LCR Bitmask */
+#define UART_LCR_BRK	(1 << 0) /* Send Break */
+#define UART_LCR_PEN	(1 << 1) /* Parity Enable */
+#define UART_LCR_EP	(1 << 2) /* Even/Odd Parity */
+#define UART_LCR_S2	(1 << 3) /* One/Two Stop bits */
+#define UART_LCR_FIFO	(1 << 4) /* FIFO Enable */
+#define UART_LCR_WL5	(0 << 5) /* Word Length - 5 bits */
+#define UART_LCR_WL6	(1 << 5) /* Word Length - 6 bits */
+#define UART_LCR_WL7	(1 << 6) /* Word Length - 7 bits */
+#define UART_LCR_WL8	(1 << 7) /* Word Length - 8 bits */
+
+/* UART_CR Bitmask */
+#define UART_CR_EN	(1 << 0) /* UART Enable */
+#define UART_CR_SIR	(1 << 1) /* IrDA SIR Enable */
+#define UART_CR_SIRLP	(1 << 2) /* Low Power IrDA Enable */
+#define UART_CR_RXP	(1 << 3) /* Receive Pin Polarity */
+#define UART_CR_TXP	(1 << 4) /* Transmit Pin Polarity */
+#define UART_CR_MXP	(1 << 5) /* Modem Pin Polarity */
+#define UART_CR_LOOP	(1 << 6) /* Loopback Mode */
+
+/* UART_SR Bitmask */
+#define UART_SR_CTS	(1 << 0) /* Clear To Send Status */
+#define UART_SR_DSR	(1 << 1) /* Data Set Ready Status */
+#define UART_SR_DCD	(1 << 2) /* Data Carrier Detect Status */
+#define UART_SR_TxBSY	(1 << 3) /* Transmitter Busy Status */
+#define UART_SR_RxFE	(1 << 4) /* Receive FIFO Empty Status */
+#define UART_SR_TxFF	(1 << 5) /* Transmit FIFO Full Status */
+#define UART_SR_RxFF	(1 << 6) /* Receive FIFO Full Status */
+#define UART_SR_TxFE	(1 << 7) /* Transmit FIFO Empty Status */
+
+/* UART_INT Bitmask */
+#define UART_INT_RIS	(1 << 0) /* Rx Interrupt */
+#define UART_INT_TIS	(1 << 1) /* Tx Interrupt */
+#define UART_INT_MIS	(1 << 2) /* Modem Interrupt */
+#define UART_INT_RTIS	(1 << 3) /* Receive Timeout Interrupt */
+
+/* Timer 1 */
+#define TIMER1_BASE	__REG(0x80000c00)
+#define TIMER1_LOAD	__REG(0x80000c00)	/* Timer 1 Load Register */
+#define TIMER1_VAL	__REG(0x80000c04)	/* Timer 1 Value Register */
+#define TIMER1_CTRL	__REG(0x80000c08)	/* Timer 1 Control Register */
+#define TIMER1_CLEAR	__REG(0x80000c0c)	/* Timer 1 Clear Register */
+
+/* Timer 2 */
+#define TIMER2_BASE	__REG(0x80000d00)
+#define TIMER2_LOAD	__REG(0x80000d00)	/* Timer 2 Load Register */
+#define TIMER2_VAL	__REG(0x80000d04)	/* Timer 2 Value Register */
+#define TIMER2_CTRL	__REG(0x80000d08)	/* Timer 2 Control Register */
+#define TIMER2_CLEAR	__REG(0x80000d0c)	/* Timer 2 Clear Register */
+
+/* Timer 3 */
+#define TIMER3_BASE	__REG(0x80000e00)
+#define TIMER3_LOAD	__REG(0x80000e00)	/* Timer 3 Load Register */
+#define TIMER3_VAL	__REG(0x80000e04)	/* Timer 3 Value Register */
+#define TIMER3_CTRL	__REG(0x80000e08)	/* Timer 3 Control Register */
+#define TIMER3_CLEAR	__REG(0x80000e0c)	/* Timer 3 Clear Register */
+
+/* Timer Control register bits */
+#define TIMER_CTRL_ENABLE	(1 << 7) /* Enable (Start° Timer */
+#define TIMER_CTRL_PERIODIC	(1 << 6) /* Periodic Running Mode */
+#define TIMER_CTRL_FREE_RUNNING (0 << 6) /* Normal Running Mode */
+#define TIMER_CTRL_CLKSEL_508K	(1 << 3) /* 508KHz Clock select (Timer 1, 2) */
+#define TIMER_CTRL_CLKSEL_2K	(0 << 3) /* 2KHz Clock Select (Timer 1, 2)*/
+
+/* Power and State Control */
+#define POWER_BASE	__REG(0x80000400)
+#define POWER_PWRSR	__REG(0x80000400) /* Power Status Register */
+#define POWER_PWRCNT	__REG(0x80000404) /* Power/Clock control */
+#define POWER_HALT	__REG(0x80000408) /* Power Idle Mode */
+#define POWER_STDBY	__REG(0x8000040c) /* Power Standby Mode */
+#define POWER_BLEOI	__REG(0x80000410) /* Battery Low End of Interrupt */
+#define POWER_MCEOI	__REG(0x80000414) /* Media Changed EoI */
+#define POWER_TEOI	__REG(0x80000418) /* Tick EoI */
+#define POWER_STFCLR	__REG(0x8000041c) /* NbFlg, RSTFlg, PFFlg, CLDFlg Clear */
+#define POWER_CLKSET	__REG(0x80000420) /* Clock Speed Control */
+
+#endif /* __ARM_ARCH_AAEC2000_H */
diff --git a/include/asm-arm/arch-aaec2000/debug-macro.S b/include/asm-arm/arch-aaec2000/debug-macro.S
new file mode 100644
index 00000000000..e4f1fa539a7
--- /dev/null
+++ b/include/asm-arm/arch-aaec2000/debug-macro.S
@@ -0,0 +1,36 @@
+/*  linux/include/asm-arm/arch-aaec2000/debug-macro.S
+ *
+ *  Debugging macro include header
+ *
+ *  Copyright (c) 2005 Nicolas Bellido Y Ortega
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+
+		.macro	addruart,rx
+		mrc	p15, 0, \rx, c1, c0
+		tst	\rx, #1			@ MMU enabled?
+		moveq	\rx, #0x80000000		@ physical
+		movne	\rx, #io_p2v(0x80000000)	@ virtual
+		orr	\rx, \rx, #0x00000800
+		.endm
+
+		.macro	senduart,rd,rx
+		str	\rd, [\rx, #0]
+		.endm
+
+		.macro	busyuart,rd,rx
+1002:		ldr	\rd, [\rx, #0x10]
+		tst	\rd, #(1 << 7)
+		beq	1002b
+		.endm
+
+		.macro	waituart,rd,rx
+#if 0
+1001:		ldr	\rd, [\rx, #0x10]
+		tst	\rd, #(1 << 5)
+		beq	1001b
+#endif
+		.endm
diff --git a/include/asm-arm/arch-aaec2000/dma.h b/include/asm-arm/arch-aaec2000/dma.h
new file mode 100644
index 00000000000..28c890b4a1d
--- /dev/null
+++ b/include/asm-arm/arch-aaec2000/dma.h
@@ -0,0 +1,17 @@
+/*
+ *  linux/include/asm-arm/arch-aaec2000/dma.h
+ *
+ *  Copyright (c) 2005 Nicolas Bellido Y Ortega
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_DMA_H
+#define __ASM_ARCH_DMA_H
+
+#define MAX_DMA_ADDRESS         0xffffffff
+#define MAX_DMA_CHANNELS        0
+
+#endif
diff --git a/include/asm-arm/arch-aaec2000/entry-macro.S b/include/asm-arm/arch-aaec2000/entry-macro.S
new file mode 100644
index 00000000000..df31313ab07
--- /dev/null
+++ b/include/asm-arm/arch-aaec2000/entry-macro.S
@@ -0,0 +1,33 @@
+/*
+ *  linux/include/asm-arm/arch-aaec2000/entry-macro.S
+ *
+ *  Low-level IRQ helper for aaec-2000 based platforms
+ *
+ *  Copyright (c) 2005 Nicolas Bellido Y Ortega
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ *
+ */
+
+		.macro	disable_fiq
+		.endm
+
+		.macro	get_irqnr_and_base, irqnr, irqstat, base, tmp
+		mov	r4, #0xf8000000
+		add	r4, r4, #0x00000500
+		mov	\base, r4
+		ldr	\irqstat, [\base, #0]
+		cmp	\irqstat, #0
+		bne	1001f
+		ldr	\irqnr, =NR_IRQS+1
+		b       1003f
+1001:		mov	\irqnr, #0
+1002:		ands	\tmp, \irqstat, #1
+		mov	\irqstat, \irqstat, LSR #1
+		add	\irqnr, \irqnr, #1
+		beq	1002b
+		sub	\irqnr, \irqnr, #1
+1003:
+		.endm
diff --git a/include/asm-arm/arch-aaec2000/hardware.h b/include/asm-arm/arch-aaec2000/hardware.h
new file mode 100644
index 00000000000..4c37219e030
--- /dev/null
+++ b/include/asm-arm/arch-aaec2000/hardware.h
@@ -0,0 +1,49 @@
+/*
+ *  linux/include/asm-arm/arch-aaec2000/hardware.h
+ *
+ *  Copyright (c) 2005 Nicolas Bellido Y Ortega
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_HARDWARE_H
+#define __ASM_ARCH_HARDWARE_H
+
+#include <linux/config.h>
+
+/* The kernel is loaded at physical address 0xf8000000.
+ * We map the IO space a bit after
+ */
+#define PIO_APB_BASE	0x80000000
+#define VIO_APB_BASE	0xf8000000
+#define IO_APB_LENGTH	0x2000
+#define PIO_AHB_BASE	0x80002000
+#define VIO_AHB_BASE	0xf8002000
+#define IO_AHB_LENGTH	0x2000
+
+#define VIO_BASE    VIO_APB_BASE
+#define PIO_BASE    PIO_APB_BASE
+
+#define io_p2v(x) ( (x) - PIO_BASE + VIO_BASE )
+#define io_v2p(x) ( (x) + PIO_BASE - VIO_BASE )
+
+#ifndef __ASSEMBLY__
+
+#include <asm/types.h>
+
+/* FIXME: Is it needed to optimize this a la pxa ?? */
+#define __REG(x)    (*((volatile u32 *)io_p2v(x)))
+#define __PREG(x)   (io_v2p((u32)&(x)))
+
+#else /* __ASSEMBLY__ */
+
+#define __REG(x)    io_p2v(x)
+#define __PREG(x)   io_v2p(x)
+
+#endif
+
+#include "aaec2000.h"
+
+#endif /* __ASM_ARCH_HARDWARE_H */
diff --git a/include/asm-arm/arch-aaec2000/io.h b/include/asm-arm/arch-aaec2000/io.h
new file mode 100644
index 00000000000..c58a8d10425
--- /dev/null
+++ b/include/asm-arm/arch-aaec2000/io.h
@@ -0,0 +1,19 @@
+/*
+ *  linux/include/asm-arm/arch-aaec2000/io.h
+ *
+ *  Copied from asm/arch/sa1100/io.h
+ */
+#ifndef __ASM_ARM_ARCH_IO_H
+#define __ASM_ARM_ARCH_IO_H
+
+#define IO_SPACE_LIMIT 0xffffffff
+
+/*
+ * We don't actually have real ISA nor PCI buses, but there is so many
+ * drivers out there that might just work if we fake them...
+ */
+#define __io(a)			((void __iomem *)(a))
+#define __mem_pci(a)		(a)
+#define __mem_isa(a)		(a)
+
+#endif
diff --git a/include/asm-arm/arch-aaec2000/irqs.h b/include/asm-arm/arch-aaec2000/irqs.h
new file mode 100644
index 00000000000..de252220e80
--- /dev/null
+++ b/include/asm-arm/arch-aaec2000/irqs.h
@@ -0,0 +1,46 @@
+/*
+ *  linux/include/asm-arm/arch-aaec2000/irqs.h
+ *
+ *  Copyright (c) 2005 Nicolas Bellido Y Ortega
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_IRQS_H
+#define __ASM_ARCH_IRQS_H
+
+
+#define INT_GPIOF0_FIQ	0  /* External GPIO Port F O Fast Interrupt Input */
+#define INT_BL_FIQ	1  /* Battery Low Fast Interrupt */
+#define INT_WE_FIQ	2  /* Watchdog Expired Fast Interrupt */
+#define INT_MV_FIQ	3  /* Media Changed Interrupt */
+#define INT_SC		4  /* Sound Codec Interrupt */
+#define INT_GPIO1	5  /* GPIO Port F Configurable Int 1 */
+#define INT_GPIO2	6  /* GPIO Port F Configurable Int 2 */
+#define INT_GPIO3	7  /* GPIO Port F Configurable Int 3 */
+#define INT_TMR1_OFL	8  /* Timer 1 Overflow Interrupt */
+#define INT_TMR2_OFL	9  /* Timer 2 Overflow Interrupt */
+#define INT_RTC_CM	10 /* RTC Compare Match Interrupt */
+#define INT_TICK	11 /* 64Hz Tick Interrupt */
+#define INT_UART1	12 /* UART1 Interrupt */
+#define INT_UART2	13 /* UART2 & Modem State Changed Interrupt */
+#define INT_LCD		14 /* LCD Interrupt */
+#define INT_SSI		15 /* SSI End of Transfer Interrupt */
+#define INT_UART3	16 /* UART3 Interrupt */
+#define INT_SCI		17 /* SCI Interrupt */
+#define INT_AAC		18 /* Advanced Audio Codec Interrupt */
+#define INT_MMC		19 /* MMC Interrupt */
+#define INT_USB		20 /* USB Interrupt */
+#define INT_DMA		21 /* DMA Interrupt */
+#define INT_TMR3_UOFL	22 /* Timer 3 Underflow Interrupt */
+#define INT_GPIO4	23 /* GPIO Port F Configurable Int 4 */
+#define INT_GPIO5	24 /* GPIO Port F Configurable Int 4 */
+#define INT_GPIO6	25 /* GPIO Port F Configurable Int 4 */
+#define INT_GPIO7	26 /* GPIO Port F Configurable Int 4 */
+#define INT_BMI		27 /* BMI Interrupt */
+
+#define NR_IRQS		(INT_BMI + 1)
+
+#endif /* __ASM_ARCH_IRQS_H */
diff --git a/include/asm-arm/arch-aaec2000/memory.h b/include/asm-arm/arch-aaec2000/memory.h
new file mode 100644
index 00000000000..681b6a6171a
--- /dev/null
+++ b/include/asm-arm/arch-aaec2000/memory.h
@@ -0,0 +1,73 @@
+/*
+ *  linux/include/asm-arm/arch-aaec2000/memory.h
+ *
+ *  Copyright (c) 2005 Nicolas Bellido Y Ortega
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_MEMORY_H
+#define __ASM_ARCH_MEMORY_H
+
+#include <linux/config.h>
+
+#define PHYS_OFFSET	(0xf0000000UL)
+
+#define __virt_to_bus(x)	__virt_to_phys(x)
+#define __bus_to_virt(x)	__phys_to_virt(x)
+
+#ifdef CONFIG_DISCONTIGMEM
+
+/*
+ * The nodes are the followings:
+ *
+ *   node 0: 0xf000.0000 - 0xf3ff.ffff
+ *   node 1: 0xf400.0000 - 0xf7ff.ffff
+ *   node 2: 0xf800.0000 - 0xfbff.ffff
+ *   node 3: 0xfc00.0000 - 0xffff.ffff
+ */
+
+/*
+ * Given a kernel address, find the home node of the underlying memory.
+ */
+#define KVADDR_TO_NID(addr) \
+	(((unsigned long)(addr) - PAGE_OFFSET) >> NODE_MAX_MEM_SHIFT)
+
+/*
+ * Given a page frame number, convert it to a node id.
+ */
+#define PFN_TO_NID(pfn) \
+	(((pfn) - PHYS_PFN_OFFSET) >> (NODE_MAX_MEM_SHIFT - PAGE_SHIFT))
+
+/*
+ * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
+ * and return the mem_map of that node.
+ */
+#define ADDR_TO_MAPBASE(kaddr)  NODE_MEM_MAP(KVADDR_TO_NID(kaddr))
+
+/*
+ * Given a page frame number, find the owning node of the memory
+ * and return the mem_map of that node.
+ */
+#define PFN_TO_MAPBASE(pfn)     NODE_MEM_MAP(PFN_TO_NID(pfn))
+
+/*
+ *  Given a kaddr, LOCAL_MEM_MAP finds the owning node of the memory
+ *  and returns the index corresponding to the appropriate page in the
+ *  node's mem_map.
+ */
+#define LOCAL_MAP_NR(addr) \
+        (((unsigned long)(addr) & (NODE_MAX_MEM_SIZE - 1)) >> PAGE_SHIFT)
+
+#define NODE_MAX_MEM_SHIFT	26
+#define NODE_MAX_MEM_SIZE	(1 << NODE_MAX_MEM_SHIFT)
+
+#else
+
+#define PFN_TO_NID(addr)	(0)
+
+#endif /* CONFIG_DISCONTIGMEM */
+
+#endif /* __ASM_ARCH_MEMORY_H */
diff --git a/include/asm-arm/arch-aaec2000/param.h b/include/asm-arm/arch-aaec2000/param.h
new file mode 100644
index 00000000000..139936c2faf
--- /dev/null
+++ b/include/asm-arm/arch-aaec2000/param.h
@@ -0,0 +1,15 @@
+/*
+ *  linux/include/asm-arm/arch-aaec2000/param.h
+ *
+ *  Copyright (c) 2005 Nicolas Bellido Y Ortega
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_PARAM_H
+#define __ASM_ARCH_PARAM_H
+
+#endif /* __ASM_ARCH_PARAM_H */
+
diff --git a/include/asm-arm/arch-aaec2000/system.h b/include/asm-arm/arch-aaec2000/system.h
new file mode 100644
index 00000000000..08de97b407a
--- /dev/null
+++ b/include/asm-arm/arch-aaec2000/system.h
@@ -0,0 +1,24 @@
+/*
+ *  linux/include/asm-arm/arch-aaed2000/system.h
+ *
+ *  Copyright (c) 2005 Nicolas Bellido Y Ortega
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_SYSTEM_H
+#define __ASM_ARCH_SYSTEM_H
+
+static inline void arch_idle(void)
+{
+	cpu_do_idle();
+}
+
+static inline void arch_reset(char mode)
+{
+	cpu_reset(0);
+}
+
+#endif /* __ASM_ARCH_SYSTEM_H */
diff --git a/include/asm-arm/arch-aaec2000/timex.h b/include/asm-arm/arch-aaec2000/timex.h
new file mode 100644
index 00000000000..f5708b38fb7
--- /dev/null
+++ b/include/asm-arm/arch-aaec2000/timex.h
@@ -0,0 +1,18 @@
+/*
+ *  linux/include/asm-arm/arch-aaec2000/timex.h
+ *
+ *  AAEC-2000 Architecture timex specification
+ *
+ *  Copyright (c) 2005 Nicolas Bellido Y Ortega
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_TIMEX_H
+#define __ASM_ARCH_TIMEX_H
+
+#define CLOCK_TICK_RATE		508000
+
+#endif /* __ASM_ARCH_TIMEX_H */
diff --git a/include/asm-arm/arch-aaec2000/uncompress.h b/include/asm-arm/arch-aaec2000/uncompress.h
new file mode 100644
index 00000000000..fff0c94b75c
--- /dev/null
+++ b/include/asm-arm/arch-aaec2000/uncompress.h
@@ -0,0 +1,47 @@
+/*
+ *  linux/include/asm-arm/arch-aaec2000/uncompress.h
+ *
+ *  Copyright (c) 2005 Nicolas Bellido Y Ortega
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_UNCOMPRESS_H
+#define __ASM_ARCH_UNCOMPRESS_H
+
+#include "hardware.h"
+
+#define UART(x)         (*(volatile unsigned long *)(serial_port + (x)))
+
+static void putstr( const char *s )
+{
+	unsigned long serial_port;
+        do {
+		serial_port = _UART3_BASE;
+		if (UART(UART_CR) & UART_CR_EN) break;
+		serial_port = _UART1_BASE;
+		if (UART(UART_CR) & UART_CR_EN) break;
+		serial_port = _UART2_BASE;
+		if (UART(UART_CR) & UART_CR_EN) break;
+		return;
+	} while (0);
+
+	for (; *s; s++) {
+		/* wait for space in the UART's transmitter */
+		while ((UART(UART_SR) & UART_SR_TxFF));
+		/* send the character out. */
+		UART(UART_DR) = *s;
+		/* if a LF, also do CR... */
+		if (*s == 10) {
+			while ((UART(UART_SR) & UART_SR_TxFF));
+			UART(UART_DR) = 13;
+		}
+	}
+}
+
+#define arch_decomp_setup()
+#define arch_decomp_wdog()
+
+#endif /* __ASM_ARCH_UNCOMPRESS_H */
diff --git a/include/asm-arm/arch-aaec2000/vmalloc.h b/include/asm-arm/arch-aaec2000/vmalloc.h
new file mode 100644
index 00000000000..ecb991e2e4f
--- /dev/null
+++ b/include/asm-arm/arch-aaec2000/vmalloc.h
@@ -0,0 +1,16 @@
+/*
+ *  linux/include/asm-arm/arch-aaec2000/vmalloc.h
+ *
+ *  Copyright (c) 2005 Nicolas Bellido Y Ortega
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2 as
+ *  published by the Free Software Foundation.
+ */
+
+#ifndef __ASM_ARCH_VMALLOC_H
+#define __ASM_ARCH_VMALLOC_H
+
+#define VMALLOC_END		(PAGE_OFFSET + 0x10000000)
+
+#endif /* __ASM_ARCH_VMALLOC_H */