--- /dev/null
+/*
+ * OpenBIOS - free your system!
+ * ( firmware/flash device driver for Linux )
+ *
+ * bios_core.c - core skeleton
+ *
+ * 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)
+#ifdef MODULE
+#ifdef MODVERSIONS
+#include <linux/modversions.h>
+#endif
+#endif
+#include <linux/module.h>
+#endif
+#include <linux/pci.h>
+#include <linux/errno.h>
+#include <linux/vmalloc.h>
+#include <linux/init.h>
+
+#include <asm/io.h>
+
+#include "bios.h"
+#include "pcisets.h"
+#include "flashchips.h"
+#include "programming.h"
+
+extern struct file_operations bios_fops;
+int bios_proc_register(void);
+int bios_proc_unregister(void);
+
+int write = 0;
+
+spinlock_t bios_lock = SPIN_LOCK_UNLOCKED;
+
+/*
+ * ******************************************
+ *
+ * Cleanup
+ *
+ * ******************************************
+ */
+
+static void free_iomaps(void)
+{
+ unsigned long lastmapped=0;
+ unsigned int i;
+
+ /* We remember the last mapped area to be sure that we only iounmap
+ * every mapped area once. If two flash devices are in the same
+ * area but do not occur sequentially during probing you have a
+ * seriously strange hardware
+ */
+ for (i=0; i<flashcount; i++) {
+ if (lastmapped==flashdevices[i].mapped)
+ continue;
+ iounmap((void *)flashdevices[i].mapped);
+ lastmapped=flashdevices[i].mapped;
+ }
+}
+
+/*
+ * ******************************************
+ *
+ * Initialization
+ *
+ * ******************************************
+ */
+
+void probe_system(void)
+{
+#ifdef __alpha__
+ probe_alphafw();
+#endif
+ /* This function checks all flash media attached to
+ * PCI devices in the system. This means NON-PCI systems
+ * don't work. This causes machine checks on my LX164 test
+ * machine, so leave it away until it's fixed. This is
+ * needed for Ruffians, so we check the machine type
+ * in probe_alphafw() and call probe_pcibus from there.
+ * This could use some cleanup
+ */
+#ifndef __alpha__
+ probe_pcibus();
+#endif
+}
+
+static __init int bios_init(void)
+{
+ printk(KERN_INFO "BIOS driver v" BIOS_VERSION " (writing %s) for "
+ UTS_RELEASE "\n", write?"enabled":"disabled");
+
+#if !defined(UTC_BIOS) && LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
+ if (!pci_present()) {
+ printk(KERN_WARNING "BIOS: No PCI system.");
+ return -EBUSY;
+ }
+#endif
+
+ /* Probe for flash devices */
+ probe_system();
+
+ if (flashcount==0) {
+ printk(KERN_WARNING "BIOS: No flash devices found.\n");
+ return -EBUSY;
+ }
+
+ if (register_chrdev(BIOS_MAJOR, "bios", &bios_fops) == -EBUSY) {
+ printk(KERN_WARNING "BIOS: Could not register bios device.\n");
+ free_iomaps();
+ return -EBUSY;
+ }
+
+#ifdef CONFIG_PROC_FS
+ bios_proc_register();
+#endif
+ return 0;
+}
+
+/*
+ * ******************************************
+ *
+ * module handling
+ *
+ * ******************************************
+ */
+
+#ifdef MODULE
+MODULE_PARM(write,"i");
+MODULE_AUTHOR("Stefan Reinauer <stepan@openbios.org>");
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,4,10)
+MODULE_LICENSE("GPL");
+#endif
+
+static __exit void cleanup_bios_module (void)
+{
+#ifdef CONFIG_PROC_FS
+ bios_proc_unregister();
+#endif
+ free_iomaps();
+
+ unregister_chrdev(BIOS_MAJOR, "bios");
+ printk(KERN_INFO "BIOS driver removed.\n");
+}
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
+int init_module(void)
+{
+ return bios_init();
+}
+
+void cleanup_module(void)
+{
+ cleanup_bios_module();
+}
+#endif
+
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,74)
+module_init(bios_init);
+module_exit(cleanup_bios_module);
+#endif
+
+void inc_mod(void)
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
+ MOD_INC_USE_COUNT;
+#endif
+}
+
+void dec_mod(void)
+{
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
+ MOD_DEC_USE_COUNT;
+#endif
+}
+
+#endif
Code Review / kvmfornfv.git / blobdiff