misc: Add driver/ and loader/ source found on ArchLinux
http://aur.archlinux.org/packages.php?ID=31596&detail=1 links to http://txrxio.net/wp/basket/makingthings/sam7utils-0.2.1.tar.gz that contains the driver and the loader sourcecode. I am not sure how this relates to loader256_data.h and loader128_data.h
This commit is contained in:
parent
7bc3aeb314
commit
861a0b11aa
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@ -0,0 +1,11 @@
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ifneq ($(KERNELRELEASE),)
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obj-m := at91.o
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else
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KDIR := /lib/modules/$(shell uname -r)/build
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PWD := $(shell pwd)
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default:
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$(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules
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endif
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modules: at91.o
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@ -0,0 +1,363 @@
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/*
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* at91 boot program driver
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*
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* Copyright (C) 2005 Erik Gilling
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* Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation, version 2.
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*
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* This driver is based on drivers/usb/usb-skeleton.c
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*/
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#include <linux/config.h>
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#include <linux/kernel.h>
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#include <linux/version.h>
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#include <linux/errno.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <linux/kref.h>
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#include <asm/uaccess.h>
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#include <linux/usb.h>
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/* Define these values to match your devices */
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#define USB_VENDOR_ID_ATMEL 0x03eb
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#define USB_DEVICE_ID_SAM7BOOT 0x6124
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/* table of devices that work with this driver */
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static struct usb_device_id at91_table [] = {
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{ USB_DEVICE( USB_VENDOR_ID_ATMEL, USB_DEVICE_ID_SAM7BOOT ) },
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE (usb, at91_table);
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/* Get a minor range for your devices from the usb maintainer */
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#define USB_AT91_MINOR_BASE 192
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/* Structure to hold all of our device specific stuff */
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struct usb_at91 {
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struct usb_device * udev; /* the usb device for this device */
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struct usb_interface * interface; /* the interface for this device */
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unsigned char * bulk_in_buffer; /* the buffer to receive data */
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size_t bulk_in_size; /* the size of the receive buffer */
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__u8 bulk_in_endpointAddr; /* the address of the bulk in endpoint */
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__u8 bulk_out_endpointAddr; /* the address of the bulk out endpoint */
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struct kref kref;
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};
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#define to_at91_dev(d) container_of(d, struct usb_at91, kref)
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static struct usb_driver at91_driver;
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static void at91_delete(struct kref *kref)
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{
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struct usb_at91 *dev = to_at91_dev(kref);
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usb_put_dev(dev->udev);
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kfree (dev->bulk_in_buffer);
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kfree (dev);
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}
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static int at91_open(struct inode *inode, struct file *file)
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{
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struct usb_at91 *dev;
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struct usb_interface *interface;
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int subminor;
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int retval = 0;
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subminor = iminor(inode);
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interface = usb_find_interface(&at91_driver, subminor);
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if (!interface) {
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err ("%s - error, can't find device for minor %d",
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__FUNCTION__, subminor);
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retval = -ENODEV;
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goto exit;
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}
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dev = usb_get_intfdata(interface);
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if (!dev) {
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retval = -ENODEV;
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goto exit;
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}
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/* increment our usage count for the device */
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kref_get(&dev->kref);
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/* save our object in the file's private structure */
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file->private_data = dev;
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exit:
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return retval;
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}
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static int at91_release(struct inode *inode, struct file *file)
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{
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struct usb_at91 *dev;
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dev = (struct usb_at91 *)file->private_data;
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if (dev == NULL)
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return -ENODEV;
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/* decrement the count on our device */
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kref_put(&dev->kref, at91_delete);
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return 0;
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}
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static ssize_t at91_read(struct file *file, char *buffer, size_t count, loff_t *ppos)
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{
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struct usb_at91 *dev;
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int retval = 0;
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int bytes_read;
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dev = (struct usb_at91 *)file->private_data;
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/* do a blocking bulk read to get data from the device */
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retval = usb_bulk_msg(dev->udev,
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usb_rcvbulkpipe(dev->udev, dev->bulk_in_endpointAddr),
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dev->bulk_in_buffer,
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min(dev->bulk_in_size, count),
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&bytes_read, 10000);
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/* if the read was successful, copy the data to userspace */
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if (!retval) {
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if (copy_to_user(buffer, dev->bulk_in_buffer, bytes_read))
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retval = -EFAULT;
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else
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retval = bytes_read;
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}
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return retval;
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}
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static void at91_write_bulk_callback(struct urb *urb, struct pt_regs *regs)
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{
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struct usb_at91 *dev;
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dev = (struct usb_at91 *)urb->context;
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/* sync/async unlink faults aren't errors */
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if (urb->status &&
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!(urb->status == -ENOENT ||
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urb->status == -ECONNRESET ||
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urb->status == -ESHUTDOWN)) {
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dbg("%s - nonzero write bulk status received: %d",
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__FUNCTION__, urb->status);
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}
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/* free up our allocated buffer */
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usb_buffer_free(urb->dev, urb->transfer_buffer_length,
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urb->transfer_buffer, urb->transfer_dma);
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}
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static ssize_t at91_write(struct file *file, const char *user_buffer, size_t count, loff_t *ppos)
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{
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struct usb_at91 *dev;
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int retval = 0;
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struct urb *urb = NULL;
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char *buf = NULL;
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dev = (struct usb_at91 *)file->private_data;
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/* verify that we actually have some data to write */
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if (count == 0)
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goto exit;
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/* create a urb, and a buffer for it, and copy the data to the urb */
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urb = usb_alloc_urb(0, GFP_KERNEL);
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if (!urb) {
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retval = -ENOMEM;
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goto error;
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}
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buf = usb_buffer_alloc(dev->udev, count, GFP_KERNEL, &urb->transfer_dma);
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if (!buf) {
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retval = -ENOMEM;
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goto error;
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}
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if (copy_from_user(buf, user_buffer, count)) {
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retval = -EFAULT;
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goto error;
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}
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/* initialize the urb properly */
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usb_fill_bulk_urb(urb, dev->udev,
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usb_sndbulkpipe(dev->udev, dev->bulk_out_endpointAddr),
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buf, count, at91_write_bulk_callback, dev);
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urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
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/* send the data out the bulk port */
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retval = usb_submit_urb(urb, GFP_KERNEL);
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if (retval) {
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err("%s - failed submitting write urb, error %d", __FUNCTION__, retval);
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goto error;
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}
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/* release our reference to this urb, the USB core will eventually free it entirely */
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usb_free_urb(urb);
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exit:
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return count;
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error:
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usb_buffer_free(dev->udev, count, buf, urb->transfer_dma);
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usb_free_urb(urb);
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return retval;
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}
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static struct file_operations at91_fops = {
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.owner = THIS_MODULE,
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.read = at91_read,
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.write = at91_write,
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.open = at91_open,
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.release = at91_release,
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};
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/*
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* usb class driver info in order to get a minor number from the usb core,
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* and to have the device registered with devfs and the driver core
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*/
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static struct usb_class_driver at91_class = {
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.name = "usb/at91_%d",
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.fops = &at91_fops,
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#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15)
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.mode = S_IFCHR | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH,
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#endif
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.minor_base = USB_AT91_MINOR_BASE,
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};
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static int at91_probe(struct usb_interface *interface, const struct usb_device_id *id)
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{
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struct usb_at91 *dev = NULL;
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struct usb_host_interface *iface_desc;
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struct usb_endpoint_descriptor *endpoint;
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size_t buffer_size;
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int i;
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int retval = -ENOMEM;
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/* allocate memory for our device state and initialize it */
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dev = kmalloc(sizeof(*dev), GFP_KERNEL);
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if (dev == NULL) {
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err("Out of memory");
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goto error;
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}
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memset(dev, 0x00, sizeof(*dev));
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kref_init(&dev->kref);
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dev->udev = usb_get_dev(interface_to_usbdev(interface));
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dev->interface = interface;
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/* set up the endpoint information */
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/* use only the first bulk-in and bulk-out endpoints */
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iface_desc = interface->cur_altsetting;
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for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
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endpoint = &iface_desc->endpoint[i].desc;
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if (!dev->bulk_in_endpointAddr &&
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((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
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== USB_DIR_IN) &&
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((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
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== USB_ENDPOINT_XFER_BULK)) {
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/* we found a bulk in endpoint */
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buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
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dev->bulk_in_size = buffer_size;
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dev->bulk_in_endpointAddr = endpoint->bEndpointAddress;
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dev->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
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if (!dev->bulk_in_buffer) {
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err("Could not allocate bulk_in_buffer");
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goto error;
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}
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}
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if (!dev->bulk_out_endpointAddr &&
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((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
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== USB_DIR_OUT) &&
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((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
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== USB_ENDPOINT_XFER_BULK)) {
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/* we found a bulk out endpoint */
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dev->bulk_out_endpointAddr = endpoint->bEndpointAddress;
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}
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}
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if (!(dev->bulk_in_endpointAddr && dev->bulk_out_endpointAddr)) {
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err("Could not find both bulk-in and bulk-out endpoints");
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goto error;
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}
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/* save our data pointer in this interface device */
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usb_set_intfdata(interface, dev);
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/* we can register the device now, as it is ready */
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retval = usb_register_dev(interface, &at91_class);
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if (retval) {
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/* something prevented us from registering this driver */
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err("Not able to get a minor for this device.");
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usb_set_intfdata(interface, NULL);
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goto error;
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}
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/* let the user know what node this device is now attached to */
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info("USB At91 device now attached to AT91-%d", interface->minor);
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return 0;
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error:
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if (dev)
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kref_put(&dev->kref, at91_delete);
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return retval;
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}
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static void at91_disconnect(struct usb_interface *interface)
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{
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struct usb_at91 *dev;
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int minor = interface->minor;
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/* prevent at91_open() from racing at91_disconnect() */
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lock_kernel();
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dev = usb_get_intfdata(interface);
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usb_set_intfdata(interface, NULL);
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/* give back our minor */
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usb_deregister_dev(interface, &at91_class);
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unlock_kernel();
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/* decrement our usage count */
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kref_put(&dev->kref, at91_delete);
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info("USB At91eton #%d now disconnected", minor);
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}
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static struct usb_driver at91_driver = {
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.owner = THIS_MODULE,
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.name = "at91",
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.probe = at91_probe,
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.disconnect = at91_disconnect,
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.id_table = at91_table,
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};
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static int __init usb_at91_init(void)
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{
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int result;
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/* register this driver with the USB subsystem */
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result = usb_register(&at91_driver);
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if (result)
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err("usb_register failed. Error number %d", result);
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return result;
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}
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static void __exit usb_at91_exit(void)
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{
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/* deregister this driver with the USB subsystem */
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usb_deregister(&at91_driver);
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}
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module_init (usb_at91_init);
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module_exit (usb_at91_exit);
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MODULE_LICENSE("GPL");
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@ -0,0 +1,61 @@
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/*
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* loader/at91.h
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*
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* Copyright (C) 2006 Erik Gilling, all rights reserved
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation, version 2.
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*
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*/
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#define AT91_FLASH_ADDR ((uint32_t *) 0x100000)
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typedef unsigned int uint32_t;
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typedef signed int int32_t;
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typedef unsigned short uint16_t;
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typedef signed short int16_t;
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typedef unsigned char uint8_t;
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typedef signed char int8_t;
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typedef volatile uint32_t arm_reg_t;
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typedef struct {
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arm_reg_t rcr; /* 00 - Remap Control Register */
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arm_reg_t asr; /* 04 - Abort Status Rebister */
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arm_reg_t aasr; /* 08 - Abort Address Status Register */
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arm_reg_t res[21]; /* 0C..5C - Reserved */
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arm_reg_t fmr; /* 60 - Flash Mode Register */
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arm_reg_t fcr; /* 64 - Flash Command Register */
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arm_reg_t fsr; /* 68 - Flash Status Register */
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} at91_mc_t;
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extern volatile at91_mc_t mc;
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#define AT91_MC_FMR_FRDY (1<<0)
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#define AT91_MC_FMR_LOCKE (1<<2)
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#define AT91_MC_FMR_PROGE (1<<3)
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#define AT91_MC_FMR_NEBP (1<<7)
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#define AT91_MC_FMR_WAIT_STATE_1_2 (0<<8)
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#define AT91_MC_FMR_WAIT_STATE_2_3 (1<<8)
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#define AT91_MC_FMR_WAIT_STATE_3_4 (2<<8)
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#define AT91_MC_FMR_WAIT_STATE_4_4 (3<<8)
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#define AT91_MC_FMR_FMCN( x ) (((x)&0xff) << 16)
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#define AT91_MC_FCR_FCMD_NOP 0x0
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#define AT91_MC_FCR_FCMD_WP 0x1
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#define AT91_MC_FCR_FCMD_SLB 0x2
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#define AT91_MC_FCR_FCMD_WPL 0x3
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#define AT91_MC_FCR_FCMD_CLB 0x4
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#define AT91_MC_FCR_FCMD_EA 0x8
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#define AT91_MC_FCR_FCMD_SGPB 0xb
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#define AT91_MC_FCR_FCMD_CGPB 0xd
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#define AT91_MC_FCR_FCMD_SSB 0xf
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#define AT91_MC_FCR_PAGEN( x ) (((x)&0x3ff)<<8)
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#define AT91_MC_FCR_KEY (0x5A << 24)
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|
|
@ -0,0 +1,30 @@
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#include <stdio.h>
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|
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int main( int argc, char *argv[] )
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{
|
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char *data_name = "data";
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int c;
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int i=0;
|
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|
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if( argc == 2 ) {
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data_name = argv[1];
|
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}
|
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|
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printf( "uint8_t %s[] = {\n", data_name );
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while( (c = getchar()) >= 0 ) {
|
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if( i== 0 ) {
|
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printf( "\t" );
|
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} else if( i%8 == 0 ) {
|
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printf( ",\n\t" );
|
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} else {
|
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printf( ", " );
|
||||
}
|
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i++;
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printf( "0x%02x", c );
|
||||
}
|
||||
|
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printf( "\n};\n" );
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|
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return 0;
|
||||
}
|
|
@ -0,0 +1,28 @@
|
|||
//
|
||||
// loader/crt0.S
|
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//
|
||||
// Copyright (C) 2006 Erik Gilling, all rights reserved
|
||||
//
|
||||
// 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, version 2.
|
||||
//
|
||||
//
|
||||
.EQU STACK, 0x201C00
|
||||
|
||||
.code 32
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.align 2
|
||||
|
||||
.global _entry
|
||||
.func _entry
|
||||
_entry:
|
||||
// init stack
|
||||
ldr sp, =STACK
|
||||
|
||||
// save lr
|
||||
stmfd sp!, {lr}
|
||||
|
||||
bl main
|
||||
|
||||
ldmia sp!, {r0}
|
||||
bx r0
|
|
@ -0,0 +1,48 @@
|
|||
/*
|
||||
* loader/loader.c
|
||||
*
|
||||
* Copyright (C) 2006 Erik Gilling, all rights reserved
|
||||
*
|
||||
* 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, version 2.
|
||||
*
|
||||
*/
|
||||
|
||||
#include "at91.h"
|
||||
|
||||
// SAM-BA apears to write the following data to 0x201400
|
||||
//
|
||||
// 0x00: data0
|
||||
// 0x01: data1
|
||||
// ...
|
||||
// PAGE_SIZE-1: last data byte
|
||||
// PAGE_SIZE : page number to write
|
||||
|
||||
|
||||
#define SAMBA_PAGE_BUFF ((uint32_t *) 0x201400)
|
||||
|
||||
int main( void )
|
||||
{
|
||||
int i;
|
||||
uint32_t *page_buff = SAMBA_PAGE_BUFF;
|
||||
// keep this in units of 32 bit words
|
||||
int page_num = *(page_buff+PAGE_SIZE/4);
|
||||
int page_offset = page_num * PAGE_SIZE/4;
|
||||
|
||||
// wait for mc to be ready
|
||||
while( !(mc.fsr & AT91_MC_FMR_FRDY) ) { }
|
||||
|
||||
// write samba page buffer to flash buffer
|
||||
for( i=0 ; i < (PAGE_SIZE/4) ; i++ ) {
|
||||
AT91_FLASH_ADDR[ page_offset + i ] = page_buff[i];
|
||||
}
|
||||
|
||||
// write page
|
||||
mc.fcr = AT91_MC_FCR_FCMD_WP | AT91_MC_FCR_PAGEN(page_num) |
|
||||
AT91_MC_FCR_KEY;
|
||||
|
||||
// dont wait for mc to be ready here so that flash ops can stack
|
||||
|
||||
return 0;
|
||||
}
|
|
@ -0,0 +1,128 @@
|
|||
/***********************************************************************/
|
||||
/* */
|
||||
/* ROM.ld: Linker Script File */
|
||||
/* */
|
||||
/***********************************************************************/
|
||||
ENTRY(_entry)
|
||||
|
||||
MEMORY
|
||||
{
|
||||
LOADER(rwx) : ORIGIN = 0x00201600, LENGTH = 0xEA00
|
||||
}
|
||||
|
||||
/* Section Definitions */
|
||||
SECTIONS
|
||||
{
|
||||
|
||||
/* first section is .text which is used for code */
|
||||
.text :
|
||||
{
|
||||
_text = .;
|
||||
PROVIDE (text = _text);
|
||||
*crt0.o (.text) /* Startup code */
|
||||
*(.text .text.*) /* remaining code */
|
||||
*(.gnu.linkonce.t.*)
|
||||
*(.glue_7)
|
||||
*(.glue_7t)
|
||||
*(.gcc_except_table)
|
||||
*(.rodata) /* read-only data (constants) */
|
||||
*(.rodata*)
|
||||
*(.gnu.linkonce.r.*)
|
||||
} > LOADER
|
||||
|
||||
. = ALIGN(4);
|
||||
|
||||
_etext = . ;
|
||||
PROVIDE (etext = .);
|
||||
|
||||
/* .data section which is used for initialized data */
|
||||
.data : AT (_etext)
|
||||
{
|
||||
_data = .;
|
||||
*(.data)
|
||||
*(.data.*)
|
||||
*(.gnu.linkonce.d*)
|
||||
SORT(CONSTRUCTORS) /* mt 4/2005 */
|
||||
} > LOADER
|
||||
|
||||
. = ALIGN(4);
|
||||
_edata = . ;
|
||||
PROVIDE (edata = .);
|
||||
|
||||
/* .bss section which is used for uninitialized data */
|
||||
.bss (NOLOAD) :
|
||||
{
|
||||
__bss_start = . ;
|
||||
__bss_start__ = . ;
|
||||
*(.bss)
|
||||
*(.gnu.linkonce.b*)
|
||||
*(COMMON)
|
||||
. = ALIGN(4);
|
||||
} > LOADER
|
||||
|
||||
. = ALIGN(4);
|
||||
__bss_end__ = . ;
|
||||
PROVIDE (__bss_end = .);
|
||||
|
||||
|
||||
|
||||
_end = . ;
|
||||
PROVIDE (end = .);
|
||||
|
||||
/* Stabs debugging sections. */
|
||||
.stab 0 : { *(.stab) }
|
||||
.stabstr 0 : { *(.stabstr) }
|
||||
.stab.excl 0 : { *(.stab.excl) }
|
||||
.stab.exclstr 0 : { *(.stab.exclstr) }
|
||||
.stab.index 0 : { *(.stab.index) }
|
||||
.stab.indexstr 0 : { *(.stab.indexstr) }
|
||||
.comment 0 : { *(.comment) }
|
||||
/* DWARF debug sections.
|
||||
Symbols in the DWARF debugging sections are relative to the beginning
|
||||
of the section so we begin them at 0. */
|
||||
/* DWARF 1 */
|
||||
.debug 0 : { *(.debug) }
|
||||
.line 0 : { *(.line) }
|
||||
/* GNU DWARF 1 extensions */
|
||||
.debug_srcinfo 0 : { *(.debug_srcinfo) }
|
||||
.debug_sfnames 0 : { *(.debug_sfnames) }
|
||||
/* DWARF 1.1 and DWARF 2 */
|
||||
.debug_aranges 0 : { *(.debug_aranges) }
|
||||
.debug_pubnames 0 : { *(.debug_pubnames) }
|
||||
/* DWARF 2 */
|
||||
.debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }
|
||||
.debug_abbrev 0 : { *(.debug_abbrev) }
|
||||
.debug_line 0 : { *(.debug_line) }
|
||||
.debug_frame 0 : { *(.debug_frame) }
|
||||
.debug_str 0 : { *(.debug_str) }
|
||||
.debug_loc 0 : { *(.debug_loc) }
|
||||
.debug_macinfo 0 : { *(.debug_macinfo) }
|
||||
/* SGI/MIPS DWARF 2 extensions */
|
||||
.debug_weaknames 0 : { *(.debug_weaknames) }
|
||||
.debug_funcnames 0 : { *(.debug_funcnames) }
|
||||
.debug_typenames 0 : { *(.debug_typenames) }
|
||||
.debug_varnames 0 : { *(.debug_varnames) }
|
||||
}
|
||||
|
||||
|
||||
PROVIDE(tc = 0xFFFA0000);
|
||||
PROVIDE(udp = 0xFFFB0000);
|
||||
PROVIDE(twi = 0xFFFB8000);
|
||||
PROVIDE(usart0 = 0xFFFC0000);
|
||||
PROVIDE(usart1 = 0xFFFC4000);
|
||||
PROVIDE(pwmc = 0xFFFCC000);
|
||||
PROVIDE(ssc = 0xFFFD4000);
|
||||
PROVIDE(adc = 0xFFFD8000);
|
||||
PROVIDE(spi = 0xFFFE0000);
|
||||
PROVIDE(aic = 0xFFFFF000);
|
||||
PROVIDE(dbgu = 0xFFFFF200);
|
||||
PROVIDE(pioa = 0xFFFFF400);
|
||||
PROVIDE(pmc = 0xFFFFFC00);
|
||||
PROVIDE(rstc = 0xFFFFFD00);
|
||||
PROVIDE(rtt = 0xFFFFFD20);
|
||||
PROVIDE(pit = 0xFFFFFD30);
|
||||
PROVIDE(wdt = 0xFFFFFD40);
|
||||
PROVIDE(vreg = 0xFFFFFD60);
|
||||
PROVIDE(mc = 0xFFFFFF00);
|
||||
|
||||
|
Reference in New Issue