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Based on 1 normalized pattern(s): 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 either version 2 or at your option any later version 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 675 mass ave cambridge ma 02139 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 77 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Armijn Hemel <armijn@tjaldur.nl> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.837555891@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
418 lines
10 KiB
C
418 lines
10 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Initial setup-routines for HP 9000 based hardware.
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*
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* Copyright (C) 1991, 1992, 1995 Linus Torvalds
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* Modifications for PA-RISC (C) 1999 Helge Deller <deller@gmx.de>
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* Modifications copyright 1999 SuSE GmbH (Philipp Rumpf)
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* Modifications copyright 2000 Martin K. Petersen <mkp@mkp.net>
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* Modifications copyright 2000 Philipp Rumpf <prumpf@tux.org>
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* Modifications copyright 2001 Ryan Bradetich <rbradetich@uswest.net>
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*
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* Initial PA-RISC Version: 04-23-1999 by Helge Deller
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*/
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#include <linux/kernel.h>
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#include <linux/initrd.h>
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#include <linux/init.h>
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#include <linux/console.h>
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#include <linux/seq_file.h>
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#define PCI_DEBUG
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#include <linux/pci.h>
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#undef PCI_DEBUG
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#include <linux/proc_fs.h>
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#include <linux/export.h>
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#include <linux/sched.h>
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#include <linux/sched/clock.h>
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#include <linux/start_kernel.h>
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#include <asm/cacheflush.h>
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#include <asm/processor.h>
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#include <asm/sections.h>
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#include <asm/pdc.h>
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#include <asm/led.h>
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#include <asm/machdep.h> /* for pa7300lc_init() proto */
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#include <asm/pdc_chassis.h>
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#include <asm/io.h>
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#include <asm/setup.h>
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#include <asm/unwind.h>
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#include <asm/smp.h>
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static char __initdata command_line[COMMAND_LINE_SIZE];
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/* Intended for ccio/sba/cpu statistics under /proc/bus/{runway|gsc} */
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struct proc_dir_entry * proc_runway_root __read_mostly = NULL;
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struct proc_dir_entry * proc_gsc_root __read_mostly = NULL;
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struct proc_dir_entry * proc_mckinley_root __read_mostly = NULL;
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void __init setup_cmdline(char **cmdline_p)
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{
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extern unsigned int boot_args[];
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/* Collect stuff passed in from the boot loader */
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/* boot_args[0] is free-mem start, boot_args[1] is ptr to command line */
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if (boot_args[0] < 64) {
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/* called from hpux boot loader */
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boot_command_line[0] = '\0';
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} else {
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strlcpy(boot_command_line, (char *)__va(boot_args[1]),
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COMMAND_LINE_SIZE);
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#ifdef CONFIG_BLK_DEV_INITRD
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if (boot_args[2] != 0) /* did palo pass us a ramdisk? */
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{
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initrd_start = (unsigned long)__va(boot_args[2]);
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initrd_end = (unsigned long)__va(boot_args[3]);
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}
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#endif
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}
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strcpy(command_line, boot_command_line);
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*cmdline_p = command_line;
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}
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#ifdef CONFIG_PA11
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void __init dma_ops_init(void)
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{
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switch (boot_cpu_data.cpu_type) {
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case pcx:
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/*
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* We've got way too many dependencies on 1.1 semantics
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* to support 1.0 boxes at this point.
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*/
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panic( "PA-RISC Linux currently only supports machines that conform to\n"
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"the PA-RISC 1.1 or 2.0 architecture specification.\n");
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case pcxl2:
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pa7300lc_init();
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break;
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default:
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break;
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}
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}
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#endif
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extern void collect_boot_cpu_data(void);
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void __init setup_arch(char **cmdline_p)
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{
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#ifdef CONFIG_64BIT
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extern int parisc_narrow_firmware;
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#endif
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unwind_init();
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init_per_cpu(smp_processor_id()); /* Set Modes & Enable FP */
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#ifdef CONFIG_64BIT
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printk(KERN_INFO "The 64-bit Kernel has started...\n");
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#else
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printk(KERN_INFO "The 32-bit Kernel has started...\n");
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#endif
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printk(KERN_INFO "Kernel default page size is %d KB. Huge pages ",
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(int)(PAGE_SIZE / 1024));
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#ifdef CONFIG_HUGETLB_PAGE
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printk(KERN_CONT "enabled with %d MB physical and %d MB virtual size",
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1 << (REAL_HPAGE_SHIFT - 20), 1 << (HPAGE_SHIFT - 20));
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#else
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printk(KERN_CONT "disabled");
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#endif
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printk(KERN_CONT ".\n");
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/*
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* Check if initial kernel page mappings are sufficient.
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* panic early if not, else we may access kernel functions
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* and variables which can't be reached.
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*/
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if (__pa((unsigned long) &_end) >= KERNEL_INITIAL_SIZE)
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panic("KERNEL_INITIAL_ORDER too small!");
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pdc_console_init();
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#ifdef CONFIG_64BIT
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if(parisc_narrow_firmware) {
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printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n");
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}
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#endif
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setup_pdc();
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setup_cmdline(cmdline_p);
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collect_boot_cpu_data();
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do_memory_inventory(); /* probe for physical memory */
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parisc_cache_init();
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paging_init();
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#ifdef CONFIG_CHASSIS_LCD_LED
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/* initialize the LCD/LED after boot_cpu_data is available ! */
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led_init(); /* LCD/LED initialization */
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#endif
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#ifdef CONFIG_PA11
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dma_ops_init();
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#endif
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#if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE)
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conswitchp = &dummy_con; /* we use do_take_over_console() later ! */
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#endif
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clear_sched_clock_stable();
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}
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/*
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* Display CPU info for all CPUs.
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* for parisc this is in processor.c
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*/
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extern int show_cpuinfo (struct seq_file *m, void *v);
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static void *
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c_start (struct seq_file *m, loff_t *pos)
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{
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/* Looks like the caller will call repeatedly until we return
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* 0, signaling EOF perhaps. This could be used to sequence
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* through CPUs for example. Since we print all cpu info in our
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* show_cpuinfo() disregarding 'pos' (which I assume is 'v' above)
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* we only allow for one "position". */
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return ((long)*pos < 1) ? (void *)1 : NULL;
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}
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static void *
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c_next (struct seq_file *m, void *v, loff_t *pos)
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{
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++*pos;
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return c_start(m, pos);
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}
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static void
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c_stop (struct seq_file *m, void *v)
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{
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}
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const struct seq_operations cpuinfo_op = {
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.start = c_start,
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.next = c_next,
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.stop = c_stop,
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.show = show_cpuinfo
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};
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static void __init parisc_proc_mkdir(void)
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{
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/*
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** Can't call proc_mkdir() until after proc_root_init() has been
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** called by start_kernel(). In other words, this code can't
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** live in arch/.../setup.c because start_parisc() calls
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** start_kernel().
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*/
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switch (boot_cpu_data.cpu_type) {
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case pcxl:
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case pcxl2:
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if (NULL == proc_gsc_root)
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{
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proc_gsc_root = proc_mkdir("bus/gsc", NULL);
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}
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break;
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case pcxt_:
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case pcxu:
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case pcxu_:
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case pcxw:
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case pcxw_:
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case pcxw2:
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if (NULL == proc_runway_root)
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{
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proc_runway_root = proc_mkdir("bus/runway", NULL);
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}
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break;
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case mako:
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case mako2:
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if (NULL == proc_mckinley_root)
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{
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proc_mckinley_root = proc_mkdir("bus/mckinley", NULL);
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}
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break;
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default:
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/* FIXME: this was added to prevent the compiler
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* complaining about missing pcx, pcxs and pcxt
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* I'm assuming they have neither gsc nor runway */
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break;
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}
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}
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static struct resource central_bus = {
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.name = "Central Bus",
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.start = F_EXTEND(0xfff80000),
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.end = F_EXTEND(0xfffaffff),
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.flags = IORESOURCE_MEM,
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};
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static struct resource local_broadcast = {
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.name = "Local Broadcast",
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.start = F_EXTEND(0xfffb0000),
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.end = F_EXTEND(0xfffdffff),
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.flags = IORESOURCE_MEM,
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};
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static struct resource global_broadcast = {
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.name = "Global Broadcast",
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.start = F_EXTEND(0xfffe0000),
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.end = F_EXTEND(0xffffffff),
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.flags = IORESOURCE_MEM,
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};
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static int __init parisc_init_resources(void)
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{
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int result;
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result = request_resource(&iomem_resource, ¢ral_bus);
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if (result < 0) {
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printk(KERN_ERR
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"%s: failed to claim %s address space!\n",
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__FILE__, central_bus.name);
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return result;
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}
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result = request_resource(&iomem_resource, &local_broadcast);
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if (result < 0) {
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printk(KERN_ERR
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"%s: failed to claim %saddress space!\n",
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__FILE__, local_broadcast.name);
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return result;
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}
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result = request_resource(&iomem_resource, &global_broadcast);
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if (result < 0) {
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printk(KERN_ERR
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"%s: failed to claim %s address space!\n",
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__FILE__, global_broadcast.name);
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return result;
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}
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return 0;
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}
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extern void gsc_init(void);
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extern void processor_init(void);
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extern void ccio_init(void);
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extern void hppb_init(void);
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extern void dino_init(void);
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extern void iosapic_init(void);
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extern void lba_init(void);
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extern void sba_init(void);
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extern void eisa_init(void);
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static int __init parisc_init(void)
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{
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u32 osid = (OS_ID_LINUX << 16);
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parisc_proc_mkdir();
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parisc_init_resources();
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do_device_inventory(); /* probe for hardware */
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parisc_pdc_chassis_init();
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/* set up a new led state on systems shipped LED State panel */
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pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BSTART);
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/* tell PDC we're Linux. Nevermind failure. */
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pdc_stable_write(0x40, &osid, sizeof(osid));
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/* start with known state */
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flush_cache_all_local();
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flush_tlb_all_local(NULL);
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processor_init();
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#ifdef CONFIG_SMP
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pr_info("CPU(s): %d out of %d %s at %d.%06d MHz online\n",
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num_online_cpus(), num_present_cpus(),
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#else
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pr_info("CPU(s): 1 x %s at %d.%06d MHz\n",
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#endif
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boot_cpu_data.cpu_name,
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boot_cpu_data.cpu_hz / 1000000,
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boot_cpu_data.cpu_hz % 1000000 );
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#if defined(CONFIG_64BIT) && defined(CONFIG_SMP)
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/* Don't serialize TLB flushes if we run on one CPU only. */
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if (num_online_cpus() == 1)
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pa_serialize_tlb_flushes = 0;
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#endif
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apply_alternatives_all();
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parisc_setup_cache_timing();
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/* These are in a non-obvious order, will fix when we have an iotree */
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#if defined(CONFIG_IOSAPIC)
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iosapic_init();
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#endif
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#if defined(CONFIG_IOMMU_SBA)
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sba_init();
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#endif
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#if defined(CONFIG_PCI_LBA)
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lba_init();
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#endif
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/* CCIO before any potential subdevices */
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#if defined(CONFIG_IOMMU_CCIO)
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ccio_init();
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#endif
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/*
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* Need to register Asp & Wax before the EISA adapters for the IRQ
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* regions. EISA must come before PCI to be sure it gets IRQ region
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* 0.
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*/
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#if defined(CONFIG_GSC_LASI) || defined(CONFIG_GSC_WAX)
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gsc_init();
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#endif
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#ifdef CONFIG_EISA
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eisa_init();
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#endif
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#if defined(CONFIG_HPPB)
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hppb_init();
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#endif
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#if defined(CONFIG_GSC_DINO)
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dino_init();
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#endif
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#ifdef CONFIG_CHASSIS_LCD_LED
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register_led_regions(); /* register LED port info in procfs */
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#endif
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return 0;
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}
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arch_initcall(parisc_init);
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void __init start_parisc(void)
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{
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extern void early_trap_init(void);
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int ret, cpunum;
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struct pdc_coproc_cfg coproc_cfg;
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/* check QEMU/SeaBIOS marker in PAGE0 */
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running_on_qemu = (memcmp(&PAGE0->pad0, "SeaBIOS", 8) == 0);
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cpunum = smp_processor_id();
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init_cpu_topology();
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set_firmware_width_unlocked();
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ret = pdc_coproc_cfg_unlocked(&coproc_cfg);
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if (ret >= 0 && coproc_cfg.ccr_functional) {
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mtctl(coproc_cfg.ccr_functional, 10);
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per_cpu(cpu_data, cpunum).fp_rev = coproc_cfg.revision;
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per_cpu(cpu_data, cpunum).fp_model = coproc_cfg.model;
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asm volatile ("fstd %fr0,8(%sp)");
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} else {
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panic("must have an fpu to boot linux");
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}
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early_trap_init(); /* initialize checksum of fault_vector */
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start_kernel();
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// not reached
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}
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