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/*
* OpenBIOS - free your system!
* ( firmware/flash device driver for Linux )
*
* procfs.c - proc filesystem handling for flash device listing.
*
* This program is part of a free implementation of the IEEE 1275-1994
* Standard for Boot (Initialization Configuration) Firmware.
*
* Copyright (C) 1998-2004 Stefan Reinauer, <stepan@openbios.org>
*
* 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 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
*
*/
#include <linux/config.h>
#include <linux/version.h>
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0) && defined(MODVERSIONS)
#include <linux/modversions.h>
#endif
#include <linux/proc_fs.h>
#ifdef CONFIG_PROC_FS
#include "bios.h"
#include "pcisets.h"
#include "flashchips.h"
#include "programming.h"
struct proc_dir_entry *proc_bios;
#define PRINT_PROC(fmt,args...) \
do { \
if (!run) \
break; \
len += sprintf( buffer+len, fmt, ##args ); \
if (begin + len > offset + size) \
run=0; \
else if (begin + len < offset) { \
begin += len; \
len = 0; \
} \
} while (0)
/*
* ******************************************
*
* /proc/bios handling
*
* ******************************************
*/
#define CFLASH flashdevices[i]
#define FLASH flashchips[CFLASH.flashnum]
#define MANUF manufacturers[CFLASH.manufnum]
int bios_read_proc(char *buffer, char **start, off_t offset, int size, int *eof, void *data)
{
int len=0, run=1, i;
off_t begin = 0;
for (i=0;i<flashcount;i++) {
#ifdef DEBUG_PROC
printk(KERN_DEBUG "BIOS: processing proc info for "
"flashchip %d\n",i+1);
#endif
if (i) /* empty line is seperator between flash chips */
PRINT_PROC("\n");
PRINT_PROC("Memory Address : 0x%08lx\n",
(unsigned long)CFLASH.physical);
PRINT_PROC("Memory Size : %d kByte\n", CFLASH.size>>10);
PRINT_PROC("Flash Type : ");
if (CFLASH.id == 0) {
PRINT_PROC("ROM\n");
continue;
}
/* Flash chip completely unknown -> output ID and proceed */
if (FLASH.id == 0) {
PRINT_PROC("unknown %s device (id 0x%04x)\n",
MANUF.name, CFLASH.id);
PRINT_PROC("Supported : no\n");
continue;
}
PRINT_PROC("%s %s (%dV)\n", MANUF.name,
FLASH.name, FLASH.voltage);
PRINT_PROC("Supported : %s\n",
FLASH.supported ? "yes": "no");
#ifdef DEBUG
PRINT_PROC("Pagetable : %d Byte\n", FLASH.pagesize );
PRINT_PROC("Erase first : %s\n",
FLASH.flags & f_needs_erase ? "yes": "no");
PRINT_PROC("Intel compliant : %s\n",
FLASH.flags & f_intel_compl ? "yes": "no");
PRINT_PROC("FWH compliant : %s\n",
FLASH.flags & f_fwh_compl ? "yes": "no");
if (CFLASH.sectors > 1)
PRINT_PROC("Sectors : %d\n", CFLASH.sectors);
#endif
}
#ifdef DEBUG_PROC
printk(KERN_DEBUG "BIOS: read_proc done.\n");
#endif
/* set to 1 if we're done */
*eof=run;
if (offset >= begin + len)
return 0;
*start = buffer + (begin - offset);
return (size < begin + len - offset ? size : begin + len - offset);
}
#undef FLASH
#undef MANUF
#undef CFLASH
#ifdef PROC_WRITEABLE
int bios_write_proc(struct file *file, const char *buffer, unsigned long count, void *data)
{
printk (KERN_INFO "%s\n",buffer);
return count;
}
#endif
int bios_proc_register(void)
{
if ((proc_bios = create_proc_entry("bios", 0, 0))) {
proc_bios->read_proc = bios_read_proc;
#ifdef PROC_WRITABLE
proc_bios->write_proc = bios_write_proc;
#endif
return 0;
}
return 1;
}
int bios_proc_unregister(void)
{
if (proc_bios)
remove_proc_entry("bios", 0);
return 0;
}
#endif
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