[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 000000000000..ce1150d4438d
--- /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 000000000000..79f851e31b9c
--- /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 000000000000..39368e18ab20
--- /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 000000000000..43722634e069
--- /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 000000000000..4d50421262a1
--- /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 000000000000..265a9ead20bf
--- /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__ */