[PATCH] avr32 architecture

This adds support for the Atmel AVR32 architecture as well as the AT32AP7000
CPU and the AT32STK1000 development board.

AVR32 is a new high-performance 32-bit RISC microprocessor core, designed for
cost-sensitive embedded applications, with particular emphasis on low power
consumption and high code density.  The AVR32 architecture is not binary
compatible with earlier 8-bit AVR architectures.

The AVR32 architecture, including the instruction set, is described by the
AVR32 Architecture Manual, available from

http://www.atmel.com/dyn/resources/prod_documents/doc32000.pdf

The Atmel AT32AP7000 is the first CPU implementing the AVR32 architecture.  It
features a 7-stage pipeline, 16KB instruction and data caches and a full
Memory Management Unit.  It also comes with a large set of integrated
peripherals, many of which are shared with the AT91 ARM-based controllers from
Atmel.

Full data sheet is available from

http://www.atmel.com/dyn/resources/prod_documents/doc32003.pdf

while the CPU core implementation including caches and MMU is documented by
the AVR32 AP Technical Reference, available from

http://www.atmel.com/dyn/resources/prod_documents/doc32001.pdf

Information about the AT32STK1000 development board can be found at

http://www.atmel.com/dyn/products/tools_card.asp?tool_id=3918

including a BSP CD image with an earlier version of this patch, development
tools (binaries and source/patches) and a root filesystem image suitable for
booting from SD card.

Alternatively, there's a preliminary "getting started" guide available at
http://avr32linux.org/twiki/bin/view/Main/GettingStarted which provides links
to the sources and patches you will need in order to set up a cross-compiling
environment for avr32-linux.

This patch, as well as the other patches included with the BSP and the
toolchain patches, is actively supported by Atmel Corporation.

[dmccr@us.ibm.com: Fix more pxx_page macro locations]
[bunk@stusta.de: fix `make defconfig']
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Dave McCracken <dmccr@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

6 files changed, 258 insertions, 0 deletions

diff --git a/include/asm-avr32/arch-at32ap/at91rm9200_pdc.h b/include/asm-avr32/arch-at32ap/at91rm9200_pdc.h
new file mode 100644
index 0000000..ce1150d44
--- /dev/null
+++ b/include/asm-avr32/arch-at32ap/at91rm9200_pdc.h
@@ -0,0 +1,36 @@
+/*
+ * include/asm-arm/arch-at91rm9200/at91rm9200_pdc.h
+ *
+ * Copyright (C) 2005 Ivan Kokshaysky
+ * Copyright (C) SAN People
+ *
+ * Peripheral Data Controller (PDC) registers.
+ * Based on AT91RM9200 datasheet revision E.
+ *
+ * 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.
+ */
+
+#ifndef AT91RM9200_PDC_H
+#define AT91RM9200_PDC_H
+
+#define AT91_PDC_RPR		0x100	/* Receive Pointer Register */
+#define AT91_PDC_RCR		0x104	/* Receive Counter Register */
+#define AT91_PDC_TPR		0x108	/* Transmit Pointer Register */
+#define AT91_PDC_TCR		0x10c	/* Transmit Counter Register */
+#define AT91_PDC_RNPR		0x110	/* Receive Next Pointer Register */
+#define AT91_PDC_RNCR		0x114	/* Receive Next Counter Register */
+#define AT91_PDC_TNPR		0x118	/* Transmit Next Pointer Register */
+#define AT91_PDC_TNCR		0x11c	/* Transmit Next Counter Register */
+
+#define AT91_PDC_PTCR		0x120	/* Transfer Control Register */
+#define		AT91_PDC_RXTEN		(1 << 0)	/* Receiver Transfer Enable */
+#define		AT91_PDC_RXTDIS		(1 << 1)	/* Receiver Transfer Disable */
+#define		AT91_PDC_TXTEN		(1 << 8)	/* Transmitter Transfer Enable */
+#define		AT91_PDC_TXTDIS		(1 << 9)	/* Transmitter Transfer Disable */
+
+#define AT91_PDC_PTSR		0x124	/* Transfer Status Register */
+
+#endif
diff --git a/include/asm-avr32/arch-at32ap/at91rm9200_usart.h b/include/asm-avr32/arch-at32ap/at91rm9200_usart.h
new file mode 100644
index 0000000..79f851e
--- /dev/null
+++ b/include/asm-avr32/arch-at32ap/at91rm9200_usart.h
@@ -0,0 +1,123 @@
+/*
+ * include/asm-arm/arch-at91rm9200/at91rm9200_usart.h
+ *
+ * Copyright (C) 2005 Ivan Kokshaysky
+ * Copyright (C) SAN People
+ *
+ * USART registers.
+ * Based on AT91RM9200 datasheet revision E.
+ *
+ * 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.
+ */
+
+#ifndef AT91RM9200_USART_H
+#define AT91RM9200_USART_H
+
+#define AT91_US_CR		0x00			/* Control Register */
+#define		AT91_US_RSTRX		(1 <<  2)		/* Reset Receiver */
+#define		AT91_US_RSTTX		(1 <<  3)		/* Reset Transmitter */
+#define		AT91_US_RXEN		(1 <<  4)		/* Receiver Enable */
+#define		AT91_US_RXDIS		(1 <<  5)		/* Receiver Disable */
+#define		AT91_US_TXEN		(1 <<  6)		/* Transmitter Enable */
+#define		AT91_US_TXDIS		(1 <<  7)		/* Transmitter Disable */
+#define		AT91_US_RSTSTA		(1 <<  8)		/* Reset Status Bits */
+#define		AT91_US_STTBRK		(1 <<  9)		/* Start Break */
+#define		AT91_US_STPBRK		(1 << 10)		/* Stop Break */
+#define		AT91_US_STTTO		(1 << 11)		/* Start Time-out */
+#define		AT91_US_SENDA		(1 << 12)		/* Send Address */
+#define		AT91_US_RSTIT		(1 << 13)		/* Reset Iterations */
+#define		AT91_US_RSTNACK		(1 << 14)		/* Reset Non Acknowledge */
+#define		AT91_US_RETTO		(1 << 15)		/* Rearm Time-out */
+#define		AT91_US_DTREN		(1 << 16)		/* Data Terminal Ready Enable */
+#define		AT91_US_DTRDIS		(1 << 17)		/* Data Terminal Ready Disable */
+#define		AT91_US_RTSEN		(1 << 18)		/* Request To Send Enable */
+#define		AT91_US_RTSDIS		(1 << 19)		/* Request To Send Disable */
+
+#define AT91_US_MR		0x04			/* Mode Register */
+#define		AT91_US_USMODE		(0xf <<  0)		/* Mode of the USART */
+#define			AT91_US_USMODE_NORMAL		0
+#define			AT91_US_USMODE_RS485		1
+#define			AT91_US_USMODE_HWHS		2
+#define			AT91_US_USMODE_MODEM		3
+#define			AT91_US_USMODE_ISO7816_T0	4
+#define			AT91_US_USMODE_ISO7816_T1	6
+#define			AT91_US_USMODE_IRDA		8
+#define		AT91_US_USCLKS		(3   <<  4)		/* Clock Selection */
+#define		AT91_US_CHRL		(3   <<  6)		/* Character Length */
+#define			AT91_US_CHRL_5			(0 <<  6)
+#define			AT91_US_CHRL_6			(1 <<  6)
+#define			AT91_US_CHRL_7			(2 <<  6)
+#define			AT91_US_CHRL_8			(3 <<  6)
+#define		AT91_US_SYNC		(1 <<  8)		/* Synchronous Mode Select */
+#define		AT91_US_PAR		(7 <<  9)		/* Parity Type */
+#define			AT91_US_PAR_EVEN		(0 <<  9)
+#define			AT91_US_PAR_ODD			(1 <<  9)
+#define			AT91_US_PAR_SPACE		(2 <<  9)
+#define			AT91_US_PAR_MARK		(3 <<  9)
+#define			AT91_US_PAR_NONE		(4 <<  9)
+#define			AT91_US_PAR_MULTI_DROP		(6 <<  9)
+#define		AT91_US_NBSTOP		(3 << 12)		/* Number of Stop Bits */
+#define			AT91_US_NBSTOP_1		(0 << 12)
+#define			AT91_US_NBSTOP_1_5		(1 << 12)
+#define			AT91_US_NBSTOP_2		(2 << 12)
+#define		AT91_US_CHMODE		(3 << 14)		/* Channel Mode */
+#define			AT91_US_CHMODE_NORMAL		(0 << 14)
+#define			AT91_US_CHMODE_ECHO		(1 << 14)
+#define			AT91_US_CHMODE_LOC_LOOP		(2 << 14)
+#define			AT91_US_CHMODE_REM_LOOP		(3 << 14)
+#define		AT91_US_MSBF		(1 << 16)		/* Bit Order */
+#define		AT91_US_MODE9		(1 << 17)		/* 9-bit Character Length */
+#define		AT91_US_CLKO		(1 << 18)		/* Clock Output Select */
+#define		AT91_US_OVER		(1 << 19)		/* Oversampling Mode */
+#define		AT91_US_INACK		(1 << 20)		/* Inhibit Non Acknowledge */
+#define		AT91_US_DSNACK		(1 << 21)		/* Disable Successive NACK */
+#define		AT91_US_MAX_ITER	(7 << 24)		/* Max Iterations */
+#define		AT91_US_FILTER		(1 << 28)		/* Infrared Receive Line Filter */
+
+#define AT91_US_IER		0x08			/* Interrupt Enable Register */
+#define		AT91_US_RXRDY		(1 <<  0)		/* Receiver Ready */
+#define		AT91_US_TXRDY		(1 <<  1)		/* Transmitter Ready */
+#define		AT91_US_RXBRK		(1 <<  2)		/* Break Received / End of Break */
+#define		AT91_US_ENDRX		(1 <<  3)		/* End of Receiver Transfer */
+#define		AT91_US_ENDTX		(1 <<  4)		/* End of Transmitter Transfer */
+#define		AT91_US_OVRE		(1 <<  5)		/* Overrun Error */
+#define		AT91_US_FRAME		(1 <<  6)		/* Framing Error */
+#define		AT91_US_PARE		(1 <<  7)		/* Parity Error */
+#define		AT91_US_TIMEOUT		(1 <<  8)		/* Receiver Time-out */
+#define		AT91_US_TXEMPTY		(1 <<  9)		/* Transmitter Empty */
+#define		AT91_US_ITERATION	(1 << 10)		/* Max number of Repetitions Reached */
+#define		AT91_US_TXBUFE		(1 << 11)		/* Transmission Buffer Empty */
+#define		AT91_US_RXBUFF		(1 << 12)		/* Reception Buffer Full */
+#define		AT91_US_NACK		(1 << 13)		/* Non Acknowledge */
+#define		AT91_US_RIIC		(1 << 16)		/* Ring Indicator Input Change */
+#define		AT91_US_DSRIC		(1 << 17)		/* Data Set Ready Input Change */
+#define		AT91_US_DCDIC		(1 << 18)		/* Data Carrier Detect Input Change */
+#define		AT91_US_CTSIC		(1 << 19)		/* Clear to Send Input Change */
+#define		AT91_US_RI		(1 << 20)		/* RI */
+#define		AT91_US_DSR		(1 << 21)		/* DSR */
+#define		AT91_US_DCD		(1 << 22)		/* DCD */
+#define		AT91_US_CTS		(1 << 23)		/* CTS */
+
+#define AT91_US_IDR		0x0c			/* Interrupt Disable Register */
+#define AT91_US_IMR		0x10			/* Interrupt Mask Register */
+#define AT91_US_CSR		0x14			/* Channel Status Register */
+#define AT91_US_RHR		0x18			/* Receiver Holding Register */
+#define AT91_US_THR		0x1c			/* Transmitter Holding Register */
+
+#define AT91_US_BRGR		0x20			/* Baud Rate Generator Register */
+#define		AT91_US_CD		(0xffff << 0)		/* Clock Divider */
+
+#define AT91_US_RTOR		0x24			/* Receiver Time-out Register */
+#define		AT91_US_TO		(0xffff << 0)		/* Time-out Value */
+
+#define AT91_US_TTGR		0x28			/* Transmitter Timeguard Register */
+#define		AT91_US_TG		(0xff << 0)		/* Timeguard Value */
+
+#define AT91_US_FIDI		0x40			/* FI DI Ratio Register */
+#define AT91_US_NER		0x44			/* Number of Errors Register */
+#define AT91_US_IF		0x4c			/* IrDA Filter Register */
+
+#endif
diff --git a/include/asm-avr32/arch-at32ap/board.h b/include/asm-avr32/arch-at32ap/board.h
new file mode 100644
index 0000000..39368e1
--- /dev/null
+++ b/include/asm-avr32/arch-at32ap/board.h
@@ -0,0 +1,35 @@
+/*
+ * Platform data definitions.
+ */
+#ifndef __ASM_ARCH_BOARD_H
+#define __ASM_ARCH_BOARD_H
+
+#include <linux/types.h>
+
+/* Add basic devices: system manager, interrupt controller, portmuxes, etc. */
+void at32_add_system_devices(void);
+
+#define AT91_NR_UART	4
+extern struct platform_device *at91_default_console_device;
+
+struct platform_device *at32_add_device_usart(unsigned int id);
+
+struct eth_platform_data {
+	u8	valid;
+	u8	mii_phy_addr;
+	u8	is_rmii;
+	u8	hw_addr[6];
+};
+struct platform_device *
+at32_add_device_eth(unsigned int id, struct eth_platform_data *data);
+
+struct platform_device *at32_add_device_spi(unsigned int id);
+
+struct lcdc_platform_data {
+	unsigned long fbmem_start;
+	unsigned long fbmem_size;
+};
+struct platform_device *
+at32_add_device_lcdc(unsigned int id, struct lcdc_platform_data *data);
+
+#endif /* __ASM_ARCH_BOARD_H */
diff --git a/include/asm-avr32/arch-at32ap/init.h b/include/asm-avr32/arch-at32ap/init.h
new file mode 100644
index 0000000..4372263
--- /dev/null
+++ b/include/asm-avr32/arch-at32ap/init.h
@@ -0,0 +1,21 @@
+/*
+ * AT32AP platform initialization calls.
+ *
+ * Copyright (C) 2006 Atmel Corporation
+ *
+ * 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_AVR32_AT32AP_INIT_H__
+#define __ASM_AVR32_AT32AP_INIT_H__
+
+void setup_platform(void);
+
+/* Called by setup_platform */
+void at32_clock_init(void);
+void at32_portmux_init(void);
+
+void at32_setup_serial_console(unsigned int usart_id);
+
+#endif /* __ASM_AVR32_AT32AP_INIT_H__ */
diff --git a/include/asm-avr32/arch-at32ap/portmux.h b/include/asm-avr32/arch-at32ap/portmux.h
new file mode 100644
index 0000000..4d50421
--- /dev/null
+++ b/include/asm-avr32/arch-at32ap/portmux.h
@@ -0,0 +1,16 @@
+/*
+ * AT32 portmux interface.
+ *
+ * Copyright (C) 2006 Atmel Corporation
+ *
+ * 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_AVR32_AT32_PORTMUX_H__
+#define __ASM_AVR32_AT32_PORTMUX_H__
+
+void portmux_set_func(unsigned int portmux_id, unsigned int pin_id,
+		      unsigned int function_id);
+
+#endif /* __ASM_AVR32_AT32_PORTMUX_H__ */
diff --git a/include/asm-avr32/arch-at32ap/sm.h b/include/asm-avr32/arch-at32ap/sm.h
new file mode 100644
index 0000000..265a9ea
--- /dev/null
+++ b/include/asm-avr32/arch-at32ap/sm.h
@@ -0,0 +1,27 @@
+/*
+ * AT32 System Manager interface.
+ *
+ * Copyright (C) 2006 Atmel Corporation
+ *
+ * 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_AVR32_AT32_SM_H__
+#define __ASM_AVR32_AT32_SM_H__
+
+struct irq_chip;
+struct platform_device;
+
+struct at32_sm {
+	spinlock_t lock;
+	void __iomem *regs;
+	struct irq_chip *eim_chip;
+	unsigned int eim_first_irq;
+	struct platform_device *pdev;
+};
+
+extern struct platform_device at32_sm_device;
+extern struct at32_sm system_manager;
+
+#endif /* __ASM_AVR32_AT32_SM_H__ */