1 /* $Id: setup.c,v 1.8 2000/02/02 04:42:38 prumpf Exp $
3 * Initial setup-routines for HP 9000 based hardware.
5 * Copyright (C) 1991, 1992, 1995 Linus Torvalds
6 * Modifications for PA-RISC (C) 1999 Helge Deller <deller@gmx.de>
7 * Modifications copyright 1999 SuSE GmbH (Philipp Rumpf)
8 * Modifications copyright 2000 Martin K. Petersen <mkp@mkp.net>
9 * Modifications copyright 2000 Philipp Rumpf <prumpf@tux.org>
10 * Modifications copyright 2001 Ryan Bradetich <rbradetich@uswest.net>
12 * Initial PA-RISC Version: 04-23-1999 by Helge Deller
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
30 #include <linux/config.h>
31 #include <linux/kernel.h>
32 #include <linux/initrd.h>
33 #include <linux/init.h>
34 #include <linux/console.h>
35 #include <linux/seq_file.h>
37 #include <linux/pci.h>
39 #include <linux/proc_fs.h>
41 #include <asm/processor.h>
44 #include <asm/machdep.h> /* for pa7300lc_init() proto */
45 #include <asm/pdc_chassis.h>
47 #include <asm/setup.h>
49 char command_line[COMMAND_LINE_SIZE];
51 /* Intended for ccio/sba/cpu statistics under /proc/bus/{runway|gsc} */
52 struct proc_dir_entry * proc_runway_root = NULL;
53 struct proc_dir_entry * proc_gsc_root = NULL;
55 void __init setup_cmdline(char **cmdline_p)
57 extern unsigned int boot_args[];
59 /* Collect stuff passed in from the boot loader */
61 /* boot_args[0] is free-mem start, boot_args[1] is ptr to command line */
62 if (boot_args[0] < 64) {
63 /* called from hpux boot loader */
64 saved_command_line[0] = '\0';
66 strcpy(saved_command_line, (char *)__va(boot_args[1]));
68 #ifdef CONFIG_BLK_DEV_INITRD
69 if (boot_args[2] != 0) /* did palo pass us a ramdisk? */
71 initrd_start = (unsigned long)__va(boot_args[2]);
72 initrd_end = (unsigned long)__va(boot_args[3]);
77 strcpy(command_line, saved_command_line);
78 *cmdline_p = command_line;
82 void __init dma_ops_init(void)
84 switch (boot_cpu_data.cpu_type) {
87 * We've got way too many dependencies on 1.1 semantics
88 * to support 1.0 boxes at this point.
90 panic( "PA-RISC Linux currently only supports machines that conform to\n"
91 "the PA-RISC 1.1 or 2.0 architecture specification.\n");
95 hppa_dma_ops = &pcx_dma_ops;
99 case pcxl: /* falls through */
100 hppa_dma_ops = &pcxl_dma_ops;
108 extern int init_per_cpu(int cpuid);
109 extern void collect_boot_cpu_data(void);
111 void __init setup_arch(char **cmdline_p)
113 init_per_cpu(smp_processor_id()); /* Set Modes & Enable FP */
116 printk(KERN_INFO "The 64-bit Kernel has started...\n");
118 printk(KERN_INFO "The 32-bit Kernel has started...\n");
124 extern int parisc_narrow_firmware;
125 if(parisc_narrow_firmware) {
126 printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n");
130 setup_cmdline(cmdline_p);
131 collect_boot_cpu_data();
132 do_memory_inventory(); /* probe for physical memory */
136 #ifdef CONFIG_CHASSIS_LCD_LED
137 /* initialize the LCD/LED after boot_cpu_data is available ! */
138 led_init(); /* LCD/LED initialization */
145 #if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE)
146 conswitchp = &dummy_con; /* we use take_over_console() later ! */
152 * Display cpu info for all cpu's.
153 * for parisc this is in processor.c
155 extern int show_cpuinfo (struct seq_file *m, void *v);
158 c_start (struct seq_file *m, loff_t *pos)
160 /* Looks like the caller will call repeatedly until we return
161 * 0, signaling EOF perhaps. This could be used to sequence
162 * through CPUs for example. Since we print all cpu info in our
163 * show_cpuinfo() disregarding 'pos' (which I assume is 'v' above)
164 * we only allow for one "position". */
165 return ((long)*pos < 1) ? (void *)1 : NULL;
169 c_next (struct seq_file *m, void *v, loff_t *pos)
172 return c_start(m, pos);
176 c_stop (struct seq_file *m, void *v)
180 struct seq_operations cpuinfo_op = {
187 static void __init parisc_proc_mkdir(void)
190 ** Can't call proc_mkdir() until after proc_root_init() has been
191 ** called by start_kernel(). In other words, this code can't
192 ** live in arch/.../setup.c because start_parisc() calls
195 switch (boot_cpu_data.cpu_type) {
198 if (NULL == proc_gsc_root)
200 proc_gsc_root = proc_mkdir("bus/gsc", 0);
209 case mako: /* XXX : this is really mckinley bus */
210 if (NULL == proc_runway_root)
212 proc_runway_root = proc_mkdir("bus/runway", 0);
216 /* FIXME: this was added to prevent the compiler
217 * complaining about missing pcx, pcxs and pcxt
218 * I'm assuming they have neither gsc nor runway */
223 static struct resource central_bus = {
224 .name = "Central Bus",
225 .start = F_EXTEND(0xfff80000),
226 .end = F_EXTEND(0xfffaffff),
227 .flags = IORESOURCE_MEM,
230 static struct resource local_broadcast = {
231 .name = "Local Broadcast",
232 .start = F_EXTEND(0xfffb0000),
233 .end = F_EXTEND(0xfffdffff),
234 .flags = IORESOURCE_MEM,
237 static struct resource global_broadcast = {
238 .name = "Global Broadcast",
239 .start = F_EXTEND(0xfffe0000),
240 .end = F_EXTEND(0xffffffff),
241 .flags = IORESOURCE_MEM,
244 static int __init parisc_init_resources(void)
248 result = request_resource(&iomem_resource, ¢ral_bus);
251 "%s: failed to claim %s address space!\n",
252 __FILE__, central_bus.name);
256 result = request_resource(&iomem_resource, &local_broadcast);
259 "%s: failed to claim %saddress space!\n",
260 __FILE__, local_broadcast.name);
264 result = request_resource(&iomem_resource, &global_broadcast);
267 "%s: failed to claim %s address space!\n",
268 __FILE__, global_broadcast.name);
275 extern void gsc_init(void);
276 extern void processor_init(void);
277 extern void ccio_init(void);
278 extern void hppb_init(void);
279 extern void dino_init(void);
280 extern void iosapic_init(void);
281 extern void lba_init(void);
282 extern void sba_init(void);
283 extern void eisa_init(void);
285 static int __init parisc_init(void)
288 parisc_init_resources();
289 do_device_inventory(); /* probe for hardware */
291 parisc_pdc_chassis_init();
293 /* set up a new led state on systems shipped LED State panel */
294 pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BSTART);
297 printk(KERN_INFO "CPU(s): %d x %s at %d.%06d MHz\n",
298 boot_cpu_data.cpu_count,
299 boot_cpu_data.cpu_name,
300 boot_cpu_data.cpu_hz / 1000000,
301 boot_cpu_data.cpu_hz % 1000000 );
303 /* These are in a non-obvious order, will fix when we have an iotree */
304 #if defined(CONFIG_IOSAPIC)
307 #if defined(CONFIG_IOMMU_SBA)
310 #if defined(CONFIG_PCI_LBA)
314 /* CCIO before any potential subdevices */
315 #if defined(CONFIG_IOMMU_CCIO)
320 * Need to register Asp & Wax before the EISA adapters for the IRQ
321 * regions. EISA must come before PCI to be sure it gets IRQ region
324 #if defined(CONFIG_GSC_LASI) || defined(CONFIG_GSC_WAX)
331 #if defined(CONFIG_HPPB)
335 #if defined(CONFIG_GSC_DINO)
339 #ifdef CONFIG_CHASSIS_LCD_LED
340 register_led_regions(); /* register LED port info in procfs */
346 arch_initcall(parisc_init);