From 5f97f7f9400de47ae837170bb274e90ad3934386 Mon Sep 17 00:00:00 2001 From: Haavard Skinnemoen Date: Mon, 25 Sep 2006 23:32:13 -0700 Subject: [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 Signed-off-by: Adrian Bunk Signed-off-by: Dave McCracken Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/avr32/mach-at32ap/at32ap.c | 90 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 arch/avr32/mach-at32ap/at32ap.c (limited to 'arch/avr32/mach-at32ap/at32ap.c') diff --git a/arch/avr32/mach-at32ap/at32ap.c b/arch/avr32/mach-at32ap/at32ap.c new file mode 100644 index 000000000000..f7cedf5aabea --- /dev/null +++ b/arch/avr32/mach-at32ap/at32ap.c @@ -0,0 +1,90 @@ +/* + * 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. + */ + +#include +#include +#include +#include + +#include + +#include +#include + +struct at32_sm system_manager; + +static int __init at32_sm_init(void) +{ + struct resource *regs; + struct at32_sm *sm = &system_manager; + int ret = -ENXIO; + + regs = platform_get_resource(&at32_sm_device, IORESOURCE_MEM, 0); + if (!regs) + goto fail; + + spin_lock_init(&sm->lock); + sm->pdev = &at32_sm_device; + + ret = -ENOMEM; + sm->regs = ioremap(regs->start, regs->end - regs->start + 1); + if (!sm->regs) + goto fail; + + return 0; + +fail: + printk(KERN_ERR "Failed to initialize System Manager: %d\n", ret); + return ret; +} + +void __init setup_platform(void) +{ + at32_sm_init(); + at32_clock_init(); + at32_portmux_init(); + + /* FIXME: This doesn't belong here */ + at32_setup_serial_console(1); +} + +static int __init pdc_probe(struct platform_device *pdev) +{ + struct clk *pclk, *hclk; + + pclk = clk_get(&pdev->dev, "pclk"); + if (IS_ERR(pclk)) { + dev_err(&pdev->dev, "no pclk defined\n"); + return PTR_ERR(pclk); + } + hclk = clk_get(&pdev->dev, "hclk"); + if (IS_ERR(hclk)) { + dev_err(&pdev->dev, "no hclk defined\n"); + clk_put(pclk); + return PTR_ERR(hclk); + } + + clk_enable(pclk); + clk_enable(hclk); + + dev_info(&pdev->dev, "Atmel Peripheral DMA Controller enabled\n"); + return 0; +} + +static struct platform_driver pdc_driver = { + .probe = pdc_probe, + .driver = { + .name = "pdc", + }, +}; + +static int __init pdc_init(void) +{ + return platform_driver_register(&pdc_driver); +} +arch_initcall(pdc_init); -- cgit v1.2.3