acrn-kernel/arch/avr32/mach-at32ap/at32ap.c

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[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>
2006-09-26 14:32:13 +08:00
/*
* 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 <linux/clk.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <asm/io.h>
#include <asm/arch/init.h>
#include <asm/arch/sm.h>
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);