setup.c
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- /* $Id: setup.c,v 1.8 2000/02/02 04:42:38 prumpf Exp $
- *
- * Initial setup-routines for HP 9000 based hardware.
- *
- * Copyright (C) 1991, 1992, 1995 Linus Torvalds
- * Modifications for PA-RISC (C) 1999 Helge Deller <deller@gmx.de>
- * Modifications copyright 1999 SuSE GmbH (Philipp Rumpf)
- * Modifications copyright 2000 Martin K. Petersen <mkp@mkp.net>
- * Modifications copyright 2000 Philipp Rumpf <prumpf@tux.org>
- * Modifications copyright 2001 Ryan Bradetich <rbradetich@uswest.net>
- *
- * Initial PA-RISC Version: 04-23-1999 by Helge Deller
- *
- * 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.
- *
- */
- #include <linux/config.h>
- #include <linux/kernel.h>
- #include <linux/blk.h> /* for initrd_start and initrd_end */
- #include <linux/init.h>
- #include <linux/console.h>
- #include <linux/seq_file.h>
- #define PCI_DEBUG
- #include <linux/pci.h>
- #undef PCI_DEBUG
- #include <linux/proc_fs.h>
- #include <asm/processor.h>
- #include <asm/pdc.h>
- #include <asm/led.h>
- #include <asm/machdep.h> /* for pa7300lc_init() proto */
- #define COMMAND_LINE_SIZE 1024
- char saved_command_line[COMMAND_LINE_SIZE];
- char command_line[COMMAND_LINE_SIZE];
- /* Intended for ccio/sba/cpu statistics under /proc/bus/{runway|gsc} */
- struct proc_dir_entry * proc_runway_root = NULL;
- struct proc_dir_entry * proc_gsc_root = NULL;
- #ifdef CONFIG_EISA
- int EISA_bus; /* This has to go somewhere in architecture specific code. */
- #endif
- void __init setup_cmdline(char **cmdline_p)
- {
- extern unsigned int boot_args[];
- /* Collect stuff passed in from the boot loader */
- /* boot_args[0] is free-mem start, boot_args[1] is ptr to command line */
- if (boot_args[0] < 64) {
- /* called from hpux boot loader */
- saved_command_line[0] = ' ';
- } else {
- strcpy(saved_command_line, (char *)__va(boot_args[1]));
- #ifdef CONFIG_BLK_DEV_INITRD
- if (boot_args[2] != 0) /* did palo pass us a ramdisk? */
- {
- initrd_start = (unsigned long)__va(boot_args[2]);
- initrd_end = (unsigned long)__va(boot_args[3]);
- }
- #endif
- }
- strcpy(command_line, saved_command_line);
- *cmdline_p = command_line;
- }
- #ifdef CONFIG_PA11
- void __init dma_ops_init(void)
- {
- switch (boot_cpu_data.cpu_type) {
- case pcx:
- /*
- * We've got way too many dependencies on 1.1 semantics
- * to support 1.0 boxes at this point.
- */
- panic( "PA-RISC Linux currently only supports machines that conform ton"
- "the PA-RISC 1.1 or 2.0 architecture specification.n");
- case pcxs:
- case pcxt:
- hppa_dma_ops = &pcx_dma_ops;
- break;
- case pcxl2:
- pa7300lc_init();
- case pcxl: /* falls through */
- hppa_dma_ops = &pcxl_dma_ops;
- break;
- default:
- break;
- }
- }
- #endif
- extern int init_per_cpu(int cpuid);
- extern void collect_boot_cpu_data(void);
- void __init setup_arch(char **cmdline_p)
- {
- init_per_cpu(smp_processor_id()); /* Set Modes & Enable FP */
- #ifdef __LP64__
- printk(KERN_INFO "The 64-bit Kernel has started...n");
- #else
- printk(KERN_INFO "The 32-bit Kernel has started...n");
- #endif
- pdc_console_init();
- #ifdef CONFIG_PDC_NARROW
- printk(KERN_INFO "Kernel is using PDC in 32-bit mode.n");
- #endif
- setup_pdc();
- setup_cmdline(cmdline_p);
- collect_boot_cpu_data();
- do_memory_inventory(); /* probe for physical memory */
- cache_init();
- paging_init();
- #ifdef CONFIG_CHASSIS_LCD_LED
- /* initialize the LCD/LED after boot_cpu_data is available ! */
- led_init(); /* LCD/LED initialization */
- #endif
- #ifdef CONFIG_PA11
- dma_ops_init();
- #endif
- #ifdef CONFIG_VT
- # if defined(CONFIG_STI_CONSOLE) || defined(CONFIG_DUMMY_CONSOLE)
- conswitchp = &dummy_con; /* we use take_over_console() later ! */
- # endif
- #endif
- }
- /*
- * Display cpu info for all cpu's.
- * for parisc this is in processor.c
- */
- extern int show_cpuinfo (struct seq_file *m, void *v);
- static void *
- c_start (struct seq_file *m, loff_t *pos)
- {
- /* Looks like the caller will call repeatedly until we return
- * 0, signaling EOF perhaps. This could be used to sequence
- * through CPUs for example. Since we print all cpu info in our
- * show_cpuinfo() disregarding 'pos' (which I assume is 'v' above)
- * we only allow for one "position". */
- return ((long)*pos < 1) ? (void *)1 : NULL;
- }
- static void *
- c_next (struct seq_file *m, void *v, loff_t *pos)
- {
- ++*pos;
- return c_start(m, pos);
- }
- static void
- c_stop (struct seq_file *m, void *v)
- {
- }
- struct seq_operations cpuinfo_op = {
- start: c_start,
- next: c_next,
- stop: c_stop,
- show: show_cpuinfo
- };
- static void parisc_proc_mkdir(void)
- {
- /*
- ** Can't call proc_mkdir() until after proc_root_init() has been
- ** called by start_kernel(). In other words, this code can't
- ** live in arch/.../setup.c because start_parisc() calls
- ** start_kernel().
- */
- switch (boot_cpu_data.cpu_type) {
- case pcxl:
- case pcxl2:
- if (NULL == proc_gsc_root)
- {
- proc_gsc_root = proc_mkdir("bus/gsc", 0);
- }
- break;
- case pcxt_:
- case pcxu:
- case pcxu_:
- case pcxw:
- case pcxw_:
- case pcxw2:
- if (NULL == proc_runway_root)
- {
- proc_runway_root = proc_mkdir("bus/runway", 0);
- }
- break;
- }
- }
- static struct resource central_bus = {
- name: "Central Bus",
- start: (unsigned long)0xfffffffffff80000,
- end: (unsigned long)0xfffffffffffaffff,
- flags: IORESOURCE_MEM,
- };
- static struct resource local_broadcast = {
- name: "Local Broadcast",
- start: (unsigned long)0xfffffffffffb0000,
- end: (unsigned long)0xfffffffffffdffff,
- flags: IORESOURCE_MEM,
- };
- static struct resource global_broadcast = {
- name: "Global Broadcast",
- start: (unsigned long)0xfffffffffffe0000,
- end: (unsigned long)0xffffffffffffffff,
- flags: IORESOURCE_MEM,
- };
- int __init parisc_init_resources(void)
- {
- int result;
- result = request_resource(&iomem_resource, ¢ral_bus);
- if (result < 0) {
- printk(KERN_ERR
- "%s: failed to claim %s address space!n",
- __FILE__, central_bus.name);
- return result;
- }
- result = request_resource(&iomem_resource, &local_broadcast);
- if (result < 0) {
- printk(KERN_ERR
- "%s: failed to claim %saddress space!n",
- __FILE__, local_broadcast.name);
- return result;
- }
- result = request_resource(&iomem_resource, &global_broadcast);
- if (result < 0) {
- printk(KERN_ERR
- "%s: failed to claim %s address space!n",
- __FILE__, global_broadcast.name);
- return result;
- }
- return 0;
- }
- extern void gsc_init(void);
- extern void processor_init(void);
- extern void ccio_init(void);
- extern void dino_init(void);
- extern void iosapic_init(void);
- extern void lba_init(void);
- extern void sba_init(void);
- extern void eisa_init(void);
- void __init parisc_init(void)
- {
- parisc_proc_mkdir();
- parisc_init_resources();
- do_device_inventory(); /* probe for hardware */
- processor_init();
- printk(KERN_INFO "CPU(s): %d x %s at %d.%06d MHzn",
- boot_cpu_data.cpu_count,
- boot_cpu_data.cpu_name,
- boot_cpu_data.cpu_hz / 1000000,
- boot_cpu_data.cpu_hz % 1000000 );
- /* These are in a non-obvious order, will fix when we have an iotree */
- #if defined(CONFIG_IOSAPIC)
- iosapic_init();
- #endif
- #if defined(CONFIG_IOMMU_SBA)
- sba_init();
- #endif
- #if defined(CONFIG_PCI_LBA)
- lba_init();
- #endif
- /* CCIO before any potential subdevices */
- #if defined(CONFIG_IOMMU_CCIO)
- ccio_init();
- #endif
- /*
- * Need to register Asp & Wax before the EISA adapters for the IRQ
- * regions. EISA must come before PCI to be sure it gets IRQ region
- * 0.
- */
- #if defined(CONFIG_GSC_LASI) || defined(CONFIG_GSC_WAX)
- gsc_init();
- #endif
- #ifdef CONFIG_EISA
- eisa_init();
- #endif
- #if defined(CONFIG_GSC_DINO)
- dino_init();
- #endif
- #ifdef CONFIG_CHASSIS_LCD_LED
- register_led_regions(); /* register LED port info in procfs */
- #endif
- }