2 * Initial setup-routines for HP 9000 based hardware.
4 * Copyright (C) 1991, 1992, 1995 Linus Torvalds
5 * Modifications for PA-RISC (C) 1999 Helge Deller <deller@gmx.de>
6 * Modifications copyright 1999 SuSE GmbH (Philipp Rumpf)
7 * Modifications copyright 2000 Martin K. Petersen <mkp@mkp.net>
8 * Modifications copyright 2000 Philipp Rumpf <prumpf@tux.org>
9 * Modifications copyright 2001 Ryan Bradetich <rbradetich@uswest.net>
11 * Initial PA-RISC Version: 04-23-1999 by Helge Deller
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 2, or (at your option)
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, write to the Free Software
25 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 #include <linux/kernel.h>
30 #include <linux/initrd.h>
31 #include <linux/init.h>
32 #include <linux/console.h>
33 #include <linux/seq_file.h>
35 #include <linux/pci.h>
37 #include <linux/proc_fs.h>
38 #include <linux/export.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 void __init
setup_cmdline(char **cmdline_p
)
63 extern unsigned int boot_args
[];
65 /* Collect stuff passed in from the boot loader */
67 /* boot_args[0] is free-mem start, boot_args[1] is ptr to command line */
68 if (boot_args
[0] < 64) {
69 /* called from hpux boot loader */
70 boot_command_line
[0] = '\0';
72 strcpy(boot_command_line
, (char *)__va(boot_args
[1]));
74 #ifdef CONFIG_BLK_DEV_INITRD
75 if (boot_args
[2] != 0) /* did palo pass us a ramdisk? */
77 initrd_start
= (unsigned long)__va(boot_args
[2]);
78 initrd_end
= (unsigned long)__va(boot_args
[3]);
83 strcpy(command_line
, boot_command_line
);
84 *cmdline_p
= command_line
;
88 void __init
dma_ops_init(void)
90 switch (boot_cpu_data
.cpu_type
) {
93 * We've got way too many dependencies on 1.1 semantics
94 * to support 1.0 boxes at this point.
96 panic( "PA-RISC Linux currently only supports machines that conform to\n"
97 "the PA-RISC 1.1 or 2.0 architecture specification.\n");
101 hppa_dma_ops
= &pcx_dma_ops
;
105 case pcxl
: /* falls through */
106 hppa_dma_ops
= &pcxl_dma_ops
;
114 extern int init_per_cpu(int cpuid
);
115 extern void collect_boot_cpu_data(void);
117 void __init
setup_arch(char **cmdline_p
)
120 extern int parisc_narrow_firmware
;
124 init_per_cpu(smp_processor_id()); /* Set Modes & Enable FP */
127 printk(KERN_INFO
"The 64-bit Kernel has started...\n");
129 printk(KERN_INFO
"The 32-bit Kernel has started...\n");
132 printk(KERN_INFO
"Default page size is %dKB.\n", (int)(PAGE_SIZE
/ 1024));
137 if(parisc_narrow_firmware
) {
138 printk(KERN_INFO
"Kernel is using PDC in 32-bit mode.\n");
142 setup_cmdline(cmdline_p
);
143 collect_boot_cpu_data();
144 do_memory_inventory(); /* probe for physical memory */
148 #ifdef CONFIG_CHASSIS_LCD_LED
149 /* initialize the LCD/LED after boot_cpu_data is available ! */
150 led_init(); /* LCD/LED initialization */
157 #if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE)
158 conswitchp
= &dummy_con
; /* we use take_over_console() later ! */
164 * Display CPU info for all CPUs.
165 * for parisc this is in processor.c
167 extern int show_cpuinfo (struct seq_file
*m
, void *v
);
170 c_start (struct seq_file
*m
, loff_t
*pos
)
172 /* Looks like the caller will call repeatedly until we return
173 * 0, signaling EOF perhaps. This could be used to sequence
174 * through CPUs for example. Since we print all cpu info in our
175 * show_cpuinfo() disregarding 'pos' (which I assume is 'v' above)
176 * we only allow for one "position". */
177 return ((long)*pos
< 1) ? (void *)1 : NULL
;
181 c_next (struct seq_file
*m
, void *v
, loff_t
*pos
)
184 return c_start(m
, pos
);
188 c_stop (struct seq_file
*m
, void *v
)
192 const struct seq_operations cpuinfo_op
= {
199 static void __init
parisc_proc_mkdir(void)
202 ** Can't call proc_mkdir() until after proc_root_init() has been
203 ** called by start_kernel(). In other words, this code can't
204 ** live in arch/.../setup.c because start_parisc() calls
207 switch (boot_cpu_data
.cpu_type
) {
210 if (NULL
== proc_gsc_root
)
212 proc_gsc_root
= proc_mkdir("bus/gsc", NULL
);
221 if (NULL
== proc_runway_root
)
223 proc_runway_root
= proc_mkdir("bus/runway", NULL
);
228 if (NULL
== proc_mckinley_root
)
230 proc_mckinley_root
= proc_mkdir("bus/mckinley", NULL
);
234 /* FIXME: this was added to prevent the compiler
235 * complaining about missing pcx, pcxs and pcxt
236 * I'm assuming they have neither gsc nor runway */
241 static struct resource central_bus
= {
242 .name
= "Central Bus",
243 .start
= F_EXTEND(0xfff80000),
244 .end
= F_EXTEND(0xfffaffff),
245 .flags
= IORESOURCE_MEM
,
248 static struct resource local_broadcast
= {
249 .name
= "Local Broadcast",
250 .start
= F_EXTEND(0xfffb0000),
251 .end
= F_EXTEND(0xfffdffff),
252 .flags
= IORESOURCE_MEM
,
255 static struct resource global_broadcast
= {
256 .name
= "Global Broadcast",
257 .start
= F_EXTEND(0xfffe0000),
258 .end
= F_EXTEND(0xffffffff),
259 .flags
= IORESOURCE_MEM
,
262 static int __init
parisc_init_resources(void)
266 result
= request_resource(&iomem_resource
, ¢ral_bus
);
269 "%s: failed to claim %s address space!\n",
270 __FILE__
, central_bus
.name
);
274 result
= request_resource(&iomem_resource
, &local_broadcast
);
277 "%s: failed to claim %saddress space!\n",
278 __FILE__
, local_broadcast
.name
);
282 result
= request_resource(&iomem_resource
, &global_broadcast
);
285 "%s: failed to claim %s address space!\n",
286 __FILE__
, global_broadcast
.name
);
293 extern void gsc_init(void);
294 extern void processor_init(void);
295 extern void ccio_init(void);
296 extern void hppb_init(void);
297 extern void dino_init(void);
298 extern void iosapic_init(void);
299 extern void lba_init(void);
300 extern void sba_init(void);
301 extern void eisa_init(void);
303 static int __init
parisc_init(void)
305 u32 osid
= (OS_ID_LINUX
<< 16);
308 parisc_init_resources();
309 do_device_inventory(); /* probe for hardware */
311 parisc_pdc_chassis_init();
313 /* set up a new led state on systems shipped LED State panel */
314 pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BSTART
);
316 /* tell PDC we're Linux. Nevermind failure. */
317 pdc_stable_write(0x40, &osid
, sizeof(osid
));
320 printk(KERN_INFO
"CPU(s): %d x %s at %d.%06d MHz\n",
322 boot_cpu_data
.cpu_name
,
323 boot_cpu_data
.cpu_hz
/ 1000000,
324 boot_cpu_data
.cpu_hz
% 1000000 );
326 parisc_setup_cache_timing();
328 /* These are in a non-obvious order, will fix when we have an iotree */
329 #if defined(CONFIG_IOSAPIC)
332 #if defined(CONFIG_IOMMU_SBA)
335 #if defined(CONFIG_PCI_LBA)
339 /* CCIO before any potential subdevices */
340 #if defined(CONFIG_IOMMU_CCIO)
345 * Need to register Asp & Wax before the EISA adapters for the IRQ
346 * regions. EISA must come before PCI to be sure it gets IRQ region
349 #if defined(CONFIG_GSC_LASI) || defined(CONFIG_GSC_WAX)
356 #if defined(CONFIG_HPPB)
360 #if defined(CONFIG_GSC_DINO)
364 #ifdef CONFIG_CHASSIS_LCD_LED
365 register_led_regions(); /* register LED port info in procfs */
370 arch_initcall(parisc_init
);
372 void start_parisc(void)
374 extern void start_kernel(void);
377 struct pdc_coproc_cfg coproc_cfg
;
379 cpunum
= smp_processor_id();
381 set_firmware_width_unlocked();
383 ret
= pdc_coproc_cfg_unlocked(&coproc_cfg
);
384 if (ret
>= 0 && coproc_cfg
.ccr_functional
) {
385 mtctl(coproc_cfg
.ccr_functional
, 10);
387 per_cpu(cpu_data
, cpunum
).fp_rev
= coproc_cfg
.revision
;
388 per_cpu(cpu_data
, cpunum
).fp_model
= coproc_cfg
.model
;
390 asm volatile ("fstd %fr0,8(%sp)");
392 panic("must have an fpu to boot linux");