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/kernel.h>
31 #include <linux/initrd.h>
32 #include <linux/init.h>
33 #include <linux/console.h>
34 #include <linux/seq_file.h>
36 #include <linux/pci.h>
38 #include <linux/proc_fs.h>
40 #include <asm/processor.h>
43 #include <asm/machdep.h> /* for pa7300lc_init() proto */
44 #include <asm/pdc_chassis.h>
46 #include <asm/setup.h>
47 #include <asm/unwind.h>
49 static char __initdata 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 __read_mostly
= NULL
;
53 struct proc_dir_entry
* proc_gsc_root __read_mostly
= NULL
;
54 struct proc_dir_entry
* proc_mckinley_root __read_mostly
= NULL
;
56 #if !defined(CONFIG_PA20) && (defined(CONFIG_IOMMU_CCIO) || defined(CONFIG_IOMMU_SBA))
57 int parisc_bus_is_phys __read_mostly
= 1; /* Assume no IOMMU is present */
58 EXPORT_SYMBOL(parisc_bus_is_phys
);
61 /* This sets the vmerge boundary and size, it's here because it has to
62 * be available on all platforms (zero means no-virtual merging) */
63 unsigned long parisc_vmerge_boundary
= 0;
64 unsigned long parisc_vmerge_max_size
= 0;
66 void __init
setup_cmdline(char **cmdline_p
)
68 extern unsigned int boot_args
[];
70 /* Collect stuff passed in from the boot loader */
72 /* boot_args[0] is free-mem start, boot_args[1] is ptr to command line */
73 if (boot_args
[0] < 64) {
74 /* called from hpux boot loader */
75 boot_command_line
[0] = '\0';
77 strcpy(boot_command_line
, (char *)__va(boot_args
[1]));
79 #ifdef CONFIG_BLK_DEV_INITRD
80 if (boot_args
[2] != 0) /* did palo pass us a ramdisk? */
82 initrd_start
= (unsigned long)__va(boot_args
[2]);
83 initrd_end
= (unsigned long)__va(boot_args
[3]);
88 strcpy(command_line
, boot_command_line
);
89 *cmdline_p
= command_line
;
93 void __init
dma_ops_init(void)
95 switch (boot_cpu_data
.cpu_type
) {
98 * We've got way too many dependencies on 1.1 semantics
99 * to support 1.0 boxes at this point.
101 panic( "PA-RISC Linux currently only supports machines that conform to\n"
102 "the PA-RISC 1.1 or 2.0 architecture specification.\n");
106 hppa_dma_ops
= &pcx_dma_ops
;
110 case pcxl
: /* falls through */
111 hppa_dma_ops
= &pcxl_dma_ops
;
119 extern int init_per_cpu(int cpuid
);
120 extern void collect_boot_cpu_data(void);
122 void __init
setup_arch(char **cmdline_p
)
125 extern int parisc_narrow_firmware
;
129 init_per_cpu(smp_processor_id()); /* Set Modes & Enable FP */
132 printk(KERN_INFO
"The 64-bit Kernel has started...\n");
134 printk(KERN_INFO
"The 32-bit Kernel has started...\n");
140 if(parisc_narrow_firmware
) {
141 printk(KERN_INFO
"Kernel is using PDC in 32-bit mode.\n");
145 setup_cmdline(cmdline_p
);
146 collect_boot_cpu_data();
147 do_memory_inventory(); /* probe for physical memory */
151 #ifdef CONFIG_CHASSIS_LCD_LED
152 /* initialize the LCD/LED after boot_cpu_data is available ! */
153 led_init(); /* LCD/LED initialization */
160 #if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE)
161 conswitchp
= &dummy_con
; /* we use take_over_console() later ! */
167 * Display CPU info for all CPUs.
168 * for parisc this is in processor.c
170 extern int show_cpuinfo (struct seq_file
*m
, void *v
);
173 c_start (struct seq_file
*m
, loff_t
*pos
)
175 /* Looks like the caller will call repeatedly until we return
176 * 0, signaling EOF perhaps. This could be used to sequence
177 * through CPUs for example. Since we print all cpu info in our
178 * show_cpuinfo() disregarding 'pos' (which I assume is 'v' above)
179 * we only allow for one "position". */
180 return ((long)*pos
< 1) ? (void *)1 : NULL
;
184 c_next (struct seq_file
*m
, void *v
, loff_t
*pos
)
187 return c_start(m
, pos
);
191 c_stop (struct seq_file
*m
, void *v
)
195 const struct seq_operations cpuinfo_op
= {
202 static void __init
parisc_proc_mkdir(void)
205 ** Can't call proc_mkdir() until after proc_root_init() has been
206 ** called by start_kernel(). In other words, this code can't
207 ** live in arch/.../setup.c because start_parisc() calls
210 switch (boot_cpu_data
.cpu_type
) {
213 if (NULL
== proc_gsc_root
)
215 proc_gsc_root
= proc_mkdir("bus/gsc", NULL
);
224 if (NULL
== proc_runway_root
)
226 proc_runway_root
= proc_mkdir("bus/runway", NULL
);
231 if (NULL
== proc_mckinley_root
)
233 proc_mckinley_root
= proc_mkdir("bus/mckinley", NULL
);
237 /* FIXME: this was added to prevent the compiler
238 * complaining about missing pcx, pcxs and pcxt
239 * I'm assuming they have neither gsc nor runway */
244 static struct resource central_bus
= {
245 .name
= "Central Bus",
246 .start
= F_EXTEND(0xfff80000),
247 .end
= F_EXTEND(0xfffaffff),
248 .flags
= IORESOURCE_MEM
,
251 static struct resource local_broadcast
= {
252 .name
= "Local Broadcast",
253 .start
= F_EXTEND(0xfffb0000),
254 .end
= F_EXTEND(0xfffdffff),
255 .flags
= IORESOURCE_MEM
,
258 static struct resource global_broadcast
= {
259 .name
= "Global Broadcast",
260 .start
= F_EXTEND(0xfffe0000),
261 .end
= F_EXTEND(0xffffffff),
262 .flags
= IORESOURCE_MEM
,
265 static int __init
parisc_init_resources(void)
269 result
= request_resource(&iomem_resource
, ¢ral_bus
);
272 "%s: failed to claim %s address space!\n",
273 __FILE__
, central_bus
.name
);
277 result
= request_resource(&iomem_resource
, &local_broadcast
);
280 "%s: failed to claim %saddress space!\n",
281 __FILE__
, local_broadcast
.name
);
285 result
= request_resource(&iomem_resource
, &global_broadcast
);
288 "%s: failed to claim %s address space!\n",
289 __FILE__
, global_broadcast
.name
);
296 extern void gsc_init(void);
297 extern void processor_init(void);
298 extern void ccio_init(void);
299 extern void hppb_init(void);
300 extern void dino_init(void);
301 extern void iosapic_init(void);
302 extern void lba_init(void);
303 extern void sba_init(void);
304 extern void eisa_init(void);
306 static int __init
parisc_init(void)
308 u32 osid
= (OS_ID_LINUX
<< 16);
311 parisc_init_resources();
312 do_device_inventory(); /* probe for hardware */
314 parisc_pdc_chassis_init();
316 /* set up a new led state on systems shipped LED State panel */
317 pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BSTART
);
319 /* tell PDC we're Linux. Nevermind failure. */
320 pdc_stable_write(0x40, &osid
, sizeof(osid
));
323 printk(KERN_INFO
"CPU(s): %d x %s at %d.%06d MHz\n",
324 boot_cpu_data
.cpu_count
,
325 boot_cpu_data
.cpu_name
,
326 boot_cpu_data
.cpu_hz
/ 1000000,
327 boot_cpu_data
.cpu_hz
% 1000000 );
329 parisc_setup_cache_timing();
331 /* These are in a non-obvious order, will fix when we have an iotree */
332 #if defined(CONFIG_IOSAPIC)
335 #if defined(CONFIG_IOMMU_SBA)
338 #if defined(CONFIG_PCI_LBA)
342 /* CCIO before any potential subdevices */
343 #if defined(CONFIG_IOMMU_CCIO)
348 * Need to register Asp & Wax before the EISA adapters for the IRQ
349 * regions. EISA must come before PCI to be sure it gets IRQ region
352 #if defined(CONFIG_GSC_LASI) || defined(CONFIG_GSC_WAX)
359 #if defined(CONFIG_HPPB)
363 #if defined(CONFIG_GSC_DINO)
367 #ifdef CONFIG_CHASSIS_LCD_LED
368 register_led_regions(); /* register LED port info in procfs */
373 arch_initcall(parisc_init
);
375 void start_parisc(void)
377 extern void start_kernel(void);
380 struct pdc_coproc_cfg coproc_cfg
;
382 cpunum
= smp_processor_id();
384 set_firmware_width_unlocked();
386 ret
= pdc_coproc_cfg_unlocked(&coproc_cfg
);
387 if (ret
>= 0 && coproc_cfg
.ccr_functional
) {
388 mtctl(coproc_cfg
.ccr_functional
, 10);
390 cpu_data
[cpunum
].fp_rev
= coproc_cfg
.revision
;
391 cpu_data
[cpunum
].fp_model
= coproc_cfg
.model
;
393 asm volatile ("fstd %fr0,8(%sp)");
395 panic("must have an fpu to boot linux");