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sam7-util
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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
master
Holger Hans Peter Freyther 11 years ago
parent 7bc3aeb314
commit 861a0b11aa
  1. 11
      driver/Makefile
  2. 363
      driver/at91.c
  3. 61
      loader/at91.h
  4. 30
      loader/bin2c.c
  5. 28
      loader/crt0.S
  6. 48
      loader/loader.c
  7. 128
      loader/loader.lds

@ -0,0 +1,11 @@
ifneq ($(KERNELRELEASE),)
obj-m := at91.o
else
KDIR := /lib/modules/$(shell uname -r)/build
PWD := $(shell pwd)
default:
$(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules
endif
modules: at91.o

@ -0,0 +1,363 @@
/*
* at91 boot program driver
*
* Copyright (C) 2005 Erik Gilling
* Copyright (C) 2001-2004 Greg Kroah-Hartman (greg@kroah.com)
*
* 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.
*
* This driver is based on drivers/usb/usb-skeleton.c
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/version.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/kref.h>
#include <asm/uaccess.h>
#include <linux/usb.h>
/* Define these values to match your devices */
#define USB_VENDOR_ID_ATMEL 0x03eb
#define USB_DEVICE_ID_SAM7BOOT 0x6124
/* table of devices that work with this driver */
static struct usb_device_id at91_table [] = {
{ USB_DEVICE( USB_VENDOR_ID_ATMEL, USB_DEVICE_ID_SAM7BOOT ) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE (usb, at91_table);
/* Get a minor range for your devices from the usb maintainer */
#define USB_AT91_MINOR_BASE 192
/* Structure to hold all of our device specific stuff */
struct usb_at91 {
struct usb_device * udev; /* the usb device for this device */
struct usb_interface * interface; /* the interface for this device */
unsigned char * bulk_in_buffer; /* the buffer to receive data */
size_t bulk_in_size; /* the size of the receive buffer */
__u8 bulk_in_endpointAddr; /* the address of the bulk in endpoint */
__u8 bulk_out_endpointAddr; /* the address of the bulk out endpoint */
struct kref kref;
};
#define to_at91_dev(d) container_of(d, struct usb_at91, kref)
static struct usb_driver at91_driver;
static void at91_delete(struct kref *kref)
{
struct usb_at91 *dev = to_at91_dev(kref);
usb_put_dev(dev->udev);
kfree (dev->bulk_in_buffer);
kfree (dev);
}
static int at91_open(struct inode *inode, struct file *file)
{
struct usb_at91 *dev;
struct usb_interface *interface;
int subminor;
int retval = 0;
subminor = iminor(inode);
interface = usb_find_interface(&at91_driver, subminor);
if (!interface) {
err ("%s - error, can't find device for minor %d",
__FUNCTION__, subminor);
retval = -ENODEV;
goto exit;
}
dev = usb_get_intfdata(interface);
if (!dev) {
retval = -ENODEV;
goto exit;
}
/* increment our usage count for the device */
kref_get(&dev->kref);
/* save our object in the file's private structure */
file->private_data = dev;
exit:
return retval;
}
static int at91_release(struct inode *inode, struct file *file)
{
struct usb_at91 *dev;
dev = (struct usb_at91 *)file->private_data;
if (dev == NULL)
return -ENODEV;
/* decrement the count on our device */
kref_put(&dev->kref, at91_delete);
return 0;
}
static ssize_t at91_read(struct file *file, char *buffer, size_t count, loff_t *ppos)
{
struct usb_at91 *dev;
int retval = 0;
int bytes_read;
dev = (struct usb_at91 *)file->private_data;
/* do a blocking bulk read to get data from the device */
retval = usb_bulk_msg(dev->udev,
usb_rcvbulkpipe(dev->udev, dev->bulk_in_endpointAddr),
dev->bulk_in_buffer,
min(dev->bulk_in_size, count),
&bytes_read, 10000);
/* if the read was successful, copy the data to userspace */
if (!retval) {
if (copy_to_user(buffer, dev->bulk_in_buffer, bytes_read))
retval = -EFAULT;
else
retval = bytes_read;
}
return retval;
}
static void at91_write_bulk_callback(struct urb *urb, struct pt_regs *regs)
{
struct usb_at91 *dev;
dev = (struct usb_at91 *)urb->context;
/* sync/async unlink faults aren't errors */
if (urb->status &&
!(urb->status == -ENOENT ||
urb->status == -ECONNRESET ||
urb->status == -ESHUTDOWN)) {
dbg("%s - nonzero write bulk status received: %d",
__FUNCTION__, urb->status);
}
/* free up our allocated buffer */
usb_buffer_free(urb->dev, urb->transfer_buffer_length,
urb->transfer_buffer, urb->transfer_dma);
}
static ssize_t at91_write(struct file *file, const char *user_buffer, size_t count, loff_t *ppos)
{
struct usb_at91 *dev;
int retval = 0;
struct urb *urb = NULL;
char *buf = NULL;
dev = (struct usb_at91 *)file->private_data;
/* verify that we actually have some data to write */
if (count == 0)
goto exit;
/* create a urb, and a buffer for it, and copy the data to the urb */
urb = usb_alloc_urb(0, GFP_KERNEL);
if (!urb) {
retval = -ENOMEM;
goto error;
}
buf = usb_buffer_alloc(dev->udev, count, GFP_KERNEL, &urb->transfer_dma);
if (!buf) {
retval = -ENOMEM;
goto error;
}
if (copy_from_user(buf, user_buffer, count)) {
retval = -EFAULT;
goto error;
}
/* initialize the urb properly */
usb_fill_bulk_urb(urb, dev->udev,
usb_sndbulkpipe(dev->udev, dev->bulk_out_endpointAddr),
buf, count, at91_write_bulk_callback, dev);
urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
/* send the data out the bulk port */
retval = usb_submit_urb(urb, GFP_KERNEL);
if (retval) {
err("%s - failed submitting write urb, error %d", __FUNCTION__, retval);
goto error;
}
/* release our reference to this urb, the USB core will eventually free it entirely */
usb_free_urb(urb);
exit:
return count;
error:
usb_buffer_free(dev->udev, count, buf, urb->transfer_dma);
usb_free_urb(urb);
return retval;
}
static struct file_operations at91_fops = {
.owner = THIS_MODULE,
.read = at91_read,
.write = at91_write,
.open = at91_open,
.release = at91_release,
};
/*
* usb class driver info in order to get a minor number from the usb core,
* and to have the device registered with devfs and the driver core
*/
static struct usb_class_driver at91_class = {
.name = "usb/at91_%d",
.fops = &at91_fops,
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15)
.mode = S_IFCHR | S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH,
#endif
.minor_base = USB_AT91_MINOR_BASE,
};
static int at91_probe(struct usb_interface *interface, const struct usb_device_id *id)
{
struct usb_at91 *dev = NULL;
struct usb_host_interface *iface_desc;
struct usb_endpoint_descriptor *endpoint;
size_t buffer_size;
int i;
int retval = -ENOMEM;
/* allocate memory for our device state and initialize it */
dev = kmalloc(sizeof(*dev), GFP_KERNEL);
if (dev == NULL) {
err("Out of memory");
goto error;
}
memset(dev, 0x00, sizeof(*dev));
kref_init(&dev->kref);
dev->udev = usb_get_dev(interface_to_usbdev(interface));
dev->interface = interface;
/* set up the endpoint information */
/* use only the first bulk-in and bulk-out endpoints */
iface_desc = interface->cur_altsetting;
for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
endpoint = &iface_desc->endpoint[i].desc;
if (!dev->bulk_in_endpointAddr &&
((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
== USB_DIR_IN) &&
((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
== USB_ENDPOINT_XFER_BULK)) {
/* we found a bulk in endpoint */
buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
dev->bulk_in_size = buffer_size;
dev->bulk_in_endpointAddr = endpoint->bEndpointAddress;
dev->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
if (!dev->bulk_in_buffer) {
err("Could not allocate bulk_in_buffer");
goto error;
}
}
if (!dev->bulk_out_endpointAddr &&
((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK)
== USB_DIR_OUT) &&
((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
== USB_ENDPOINT_XFER_BULK)) {
/* we found a bulk out endpoint */
dev->bulk_out_endpointAddr = endpoint->bEndpointAddress;
}
}
if (!(dev->bulk_in_endpointAddr && dev->bulk_out_endpointAddr)) {
err("Could not find both bulk-in and bulk-out endpoints");
goto error;
}
/* save our data pointer in this interface device */
usb_set_intfdata(interface, dev);
/* we can register the device now, as it is ready */
retval = usb_register_dev(interface, &at91_class);
if (retval) {
/* something prevented us from registering this driver */
err("Not able to get a minor for this device.");
usb_set_intfdata(interface, NULL);
goto error;
}
/* let the user know what node this device is now attached to */
info("USB At91 device now attached to AT91-%d", interface->minor);
return 0;
error:
if (dev)
kref_put(&dev->kref, at91_delete);
return retval;
}
static void at91_disconnect(struct usb_interface *interface)
{
struct usb_at91 *dev;
int minor = interface->minor;
/* prevent at91_open() from racing at91_disconnect() */
lock_kernel();
dev = usb_get_intfdata(interface);
usb_set_intfdata(interface, NULL);
/* give back our minor */
usb_deregister_dev(interface, &at91_class);
unlock_kernel();
/* decrement our usage count */
kref_put(&dev->kref, at91_delete);
info("USB At91eton #%d now disconnected", minor);
}
static struct usb_driver at91_driver = {
.owner = THIS_MODULE,
.name = "at91",
.probe = at91_probe,
.disconnect = at91_disconnect,
.id_table = at91_table,
};
static int __init usb_at91_init(void)
{
int result;
/* register this driver with the USB subsystem */
result = usb_register(&at91_driver);
if (result)
err("usb_register failed. Error number %d", result);
return result;
}
static void __exit usb_at91_exit(void)
{
/* deregister this driver with the USB subsystem */
usb_deregister(&at91_driver);
}
module_init (usb_at91_init);
module_exit (usb_at91_exit);
MODULE_LICENSE("GPL");

@ -0,0 +1,61 @@
/*
* loader/at91.h
*
* 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.
*
*/
#define AT91_FLASH_ADDR ((uint32_t *) 0x100000)
typedef unsigned int uint32_t;
typedef signed int int32_t;
typedef unsigned short uint16_t;
typedef signed short int16_t;
typedef unsigned char uint8_t;
typedef signed char int8_t;
typedef volatile uint32_t arm_reg_t;
typedef struct {
arm_reg_t rcr; /* 00 - Remap Control Register */
arm_reg_t asr; /* 04 - Abort Status Rebister */
arm_reg_t aasr; /* 08 - Abort Address Status Register */
arm_reg_t res[21]; /* 0C..5C - Reserved */
arm_reg_t fmr; /* 60 - Flash Mode Register */
arm_reg_t fcr; /* 64 - Flash Command Register */
arm_reg_t fsr; /* 68 - Flash Status Register */
} at91_mc_t;
extern volatile at91_mc_t mc;
#define AT91_MC_FMR_FRDY (1<<0)
#define AT91_MC_FMR_LOCKE (1<<2)
#define AT91_MC_FMR_PROGE (1<<3)
#define AT91_MC_FMR_NEBP (1<<7)
#define AT91_MC_FMR_WAIT_STATE_1_2 (0<<8)
#define AT91_MC_FMR_WAIT_STATE_2_3 (1<<8)
#define AT91_MC_FMR_WAIT_STATE_3_4 (2<<8)
#define AT91_MC_FMR_WAIT_STATE_4_4 (3<<8)
#define AT91_MC_FMR_FMCN( x ) (((x)&0xff) << 16)
#define AT91_MC_FCR_FCMD_NOP 0x0
#define AT91_MC_FCR_FCMD_WP 0x1
#define AT91_MC_FCR_FCMD_SLB 0x2
#define AT91_MC_FCR_FCMD_WPL 0x3
#define AT91_MC_FCR_FCMD_CLB 0x4
#define AT91_MC_FCR_FCMD_EA 0x8
#define AT91_MC_FCR_FCMD_SGPB 0xb
#define AT91_MC_FCR_FCMD_CGPB 0xd
#define AT91_MC_FCR_FCMD_SSB 0xf
#define AT91_MC_FCR_PAGEN( x ) (((x)&0x3ff)<<8)
#define AT91_MC_FCR_KEY (0x5A << 24)

@ -0,0 +1,30 @@
#include <stdio.h>
int main( int argc, char *argv[] )
{
char *data_name = "data";
int c;
int i=0;
if( argc == 2 ) {
data_name = argv[1];
}
printf( "uint8_t %s[] = {\n", data_name );
while( (c = getchar()) >= 0 ) {
if( i== 0 ) {
printf( "\t" );
} else if( i%8 == 0 ) {
printf( ",\n\t" );
} else {
printf( ", " );
}
i++;
printf( "0x%02x", c );
}
printf( "\n};\n" );
return 0;
}

@ -0,0 +1,28 @@
//
// loader/crt0.S
//
// 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
.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);