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