[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>

4 files changed, 125 insertions, 0 deletions

diff --git a/arch/avr32/boards/atstk1000/Makefile b/arch/avr32/boards/atstk1000/Makefile
new file mode 100644
index 000000000000..c3e36ece8651
--- /dev/null
+++ b/arch/avr32/boards/atstk1000/Makefile
@@ -0,0 +1,2 @@
+obj-y                           += setup.o spi.o
+obj-$(CONFIG_BOARD_ATSTK1002)   += atstk1002.o
diff --git a/arch/avr32/boards/atstk1000/atstk1002.c b/arch/avr32/boards/atstk1000/atstk1002.c
new file mode 100644
index 000000000000..49164e9aadd6
--- /dev/null
+++ b/arch/avr32/boards/atstk1000/atstk1002.c
@@ -0,0 +1,37 @@
+/*
+ * ATSTK1002 daughterboard-specific init code
+ *
+ * Copyright (C) 2005-2006 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.
+ */
+#include <linux/init.h>
+
+#include <asm/arch/board.h>
+
+struct eth_platform_data __initdata eth0_data = {
+        .valid          = 1,
+        .mii_phy_addr   = 0x10,
+        .is_rmii        = 0,
+        .hw_addr        = { 0x6a, 0x87, 0x71, 0x14, 0xcd, 0xcb },
+};
+
+extern struct lcdc_platform_data atstk1000_fb0_data;
+
+static int __init atstk1002_init(void)
+{
+        at32_add_system_devices();
+
+        at32_add_device_usart(1);       /* /dev/ttyS0 */
+        at32_add_device_usart(2);       /* /dev/ttyS1 */
+        at32_add_device_usart(3);       /* /dev/ttyS2 */
+
+        at32_add_device_eth(0, &eth0_data);
+        at32_add_device_spi(0);
+        at32_add_device_lcdc(0, &atstk1000_fb0_data);
+
+        return 0;
+}
+postcore_initcall(atstk1002_init);
diff --git a/arch/avr32/boards/atstk1000/setup.c b/arch/avr32/boards/atstk1000/setup.c
new file mode 100644
index 000000000000..191ab85de9a3
--- /dev/null
+++ b/arch/avr32/boards/atstk1000/setup.c
@@ -0,0 +1,59 @@
+/*
+ * ATSTK1000 board-specific setup code.
+ *
+ * Copyright (C) 2005-2006 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.
+ */
+#include <linux/bootmem.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/linkage.h>
+
+#include <asm/setup.h>
+
+#include <asm/arch/board.h>
+
+/* Initialized by bootloader-specific startup code. */
+struct tag *bootloader_tags __initdata;
+
+struct lcdc_platform_data __initdata atstk1000_fb0_data;
+
+asmlinkage void __init board_early_init(void)
+{
+        extern void sdram_init(void);
+
+#ifdef CONFIG_LOADER_STANDALONE
+        sdram_init();
+#endif
+}
+
+void __init board_setup_fbmem(unsigned long fbmem_start,
+                              unsigned long fbmem_size)
+{
+        if (!fbmem_size)
+                return;
+
+        if (!fbmem_start) {
+                void *fbmem;
+
+                fbmem = alloc_bootmem_low_pages(fbmem_size);
+                fbmem_start = __pa(fbmem);
+        } else {
+                pg_data_t *pgdat;
+
+                for_each_online_pgdat(pgdat) {
+                        if (fbmem_start >= pgdat->bdata->node_boot_start
+                            && fbmem_start <= pgdat->bdata->node_low_pfn)
+                                reserve_bootmem_node(pgdat, fbmem_start,
+                                                     fbmem_size);
+                }
+        }
+
+        printk("%luKiB framebuffer memory at address 0x%08lx\n",
+               fbmem_size >> 10, fbmem_start);
+        atstk1000_fb0_data.fbmem_start = fbmem_start;
+        atstk1000_fb0_data.fbmem_size = fbmem_size;
+}
diff --git a/arch/avr32/boards/atstk1000/spi.c b/arch/avr32/boards/atstk1000/spi.c
new file mode 100644
index 000000000000..567726c82c6e
--- /dev/null
+++ b/arch/avr32/boards/atstk1000/spi.c
@@ -0,0 +1,27 @@
+/*
+ * ATSTK1000 SPI devices
+ *
+ * Copyright (C) 2005 Atmel Norway
+ *
+ * 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/device.h>
+#include <linux/spi/spi.h>
+
+static struct spi_board_info spi_board_info[] __initdata = {
+        {
+                .modalias       = "ltv350qv",
+                .max_speed_hz   = 16000000,
+                .bus_num        = 0,
+                .chip_select    = 1,
+        },
+};
+
+static int board_init_spi(void)
+{
+        spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
+        return 0;
+}
+arch_initcall(board_init_spi);