1/*    $Id: setup.c,v 1.1.1.1 2007/08/03 18:52:03 Exp $
2 *
3 *    Initial setup-routines for HP 9000 based hardware.
4 *
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>
11 *
12 *    Initial PA-RISC Version: 04-23-1999 by Helge Deller
13 *
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)
17 *    any later version.
18 *
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.
23 *
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.
27 *
28 */
29
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>
35#define PCI_DEBUG
36#include <linux/pci.h>
37#undef PCI_DEBUG
38#include <linux/proc_fs.h>
39
40#include <asm/processor.h>
41#include <asm/pdc.h>
42#include <asm/led.h>
43#include <asm/machdep.h>	/* for pa7300lc_init() proto */
44#include <asm/pdc_chassis.h>
45#include <asm/io.h>
46#include <asm/setup.h>
47
48static char __initdata command_line[COMMAND_LINE_SIZE];
49
50/* Intended for ccio/sba/cpu statistics under /proc/bus/{runway|gsc} */
51struct proc_dir_entry * proc_runway_root __read_mostly = NULL;
52struct proc_dir_entry * proc_gsc_root __read_mostly = NULL;
53struct proc_dir_entry * proc_mckinley_root __read_mostly = NULL;
54
55#if !defined(CONFIG_PA20) && (defined(CONFIG_IOMMU_CCIO) || defined(CONFIG_IOMMU_SBA))
56int parisc_bus_is_phys __read_mostly = 1;	/* Assume no IOMMU is present */
57EXPORT_SYMBOL(parisc_bus_is_phys);
58#endif
59
60/* This sets the vmerge boundary and size, it's here because it has to
61 * be available on all platforms (zero means no-virtual merging) */
62unsigned long parisc_vmerge_boundary = 0;
63unsigned long parisc_vmerge_max_size = 0;
64
65void __init setup_cmdline(char **cmdline_p)
66{
67	extern unsigned int boot_args[];
68
69	/* Collect stuff passed in from the boot loader */
70
71	/* boot_args[0] is free-mem start, boot_args[1] is ptr to command line */
72	if (boot_args[0] < 64) {
73		/* called from hpux boot loader */
74		boot_command_line[0] = '\0';
75	} else {
76		strcpy(boot_command_line, (char *)__va(boot_args[1]));
77
78#ifdef CONFIG_BLK_DEV_INITRD
79		if (boot_args[2] != 0) /* did palo pass us a ramdisk? */
80		{
81		    initrd_start = (unsigned long)__va(boot_args[2]);
82		    initrd_end = (unsigned long)__va(boot_args[3]);
83		}
84#endif
85	}
86
87	strcpy(command_line, boot_command_line);
88	*cmdline_p = command_line;
89}
90
91#ifdef CONFIG_PA11
92void __init dma_ops_init(void)
93{
94	switch (boot_cpu_data.cpu_type) {
95	case pcx:
96		/*
97		 * We've got way too many dependencies on 1.1 semantics
98		 * to support 1.0 boxes at this point.
99		 */
100		panic(	"PA-RISC Linux currently only supports machines that conform to\n"
101			"the PA-RISC 1.1 or 2.0 architecture specification.\n");
102
103	case pcxs:
104	case pcxt:
105		hppa_dma_ops = &pcx_dma_ops;
106		break;
107	case pcxl2:
108		pa7300lc_init();
109	case pcxl: /* falls through */
110		hppa_dma_ops = &pcxl_dma_ops;
111		break;
112	default:
113		break;
114	}
115}
116#endif
117
118extern int init_per_cpu(int cpuid);
119extern void collect_boot_cpu_data(void);
120
121void __init setup_arch(char **cmdline_p)
122{
123#ifdef CONFIG_64BIT
124	extern int parisc_narrow_firmware;
125#endif
126
127	init_per_cpu(smp_processor_id());	/* Set Modes & Enable FP */
128
129#ifdef CONFIG_64BIT
130	printk(KERN_INFO "The 64-bit Kernel has started...\n");
131#else
132	printk(KERN_INFO "The 32-bit Kernel has started...\n");
133#endif
134
135	pdc_console_init();
136
137#ifdef CONFIG_64BIT
138	if(parisc_narrow_firmware) {
139		printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n");
140	}
141#endif
142	setup_pdc();
143	setup_cmdline(cmdline_p);
144	collect_boot_cpu_data();
145	do_memory_inventory();  /* probe for physical memory */
146	parisc_cache_init();
147	paging_init();
148
149#ifdef CONFIG_CHASSIS_LCD_LED
150	/* initialize the LCD/LED after boot_cpu_data is available ! */
151	led_init();		/* LCD/LED initialization */
152#endif
153
154#ifdef CONFIG_PA11
155	dma_ops_init();
156#endif
157
158#if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE)
159	conswitchp = &dummy_con;	/* we use take_over_console() later ! */
160#endif
161
162}
163
164/*
165 * Display CPU info for all CPUs.
166 * for parisc this is in processor.c
167 */
168extern int show_cpuinfo (struct seq_file *m, void *v);
169
170static void *
171c_start (struct seq_file *m, loff_t *pos)
172{
173    	/* Looks like the caller will call repeatedly until we return
174	 * 0, signaling EOF perhaps.  This could be used to sequence
175	 * through CPUs for example.  Since we print all cpu info in our
176	 * show_cpuinfo() disregarding 'pos' (which I assume is 'v' above)
177	 * we only allow for one "position".  */
178	return ((long)*pos < 1) ? (void *)1 : NULL;
179}
180
181static void *
182c_next (struct seq_file *m, void *v, loff_t *pos)
183{
184	++*pos;
185	return c_start(m, pos);
186}
187
188static void
189c_stop (struct seq_file *m, void *v)
190{
191}
192
193struct seq_operations cpuinfo_op = {
194	.start	= c_start,
195	.next	= c_next,
196	.stop	= c_stop,
197	.show	= show_cpuinfo
198};
199
200static void __init parisc_proc_mkdir(void)
201{
202	/*
203	** Can't call proc_mkdir() until after proc_root_init() has been
204	** called by start_kernel(). In other words, this code can't
205	** live in arch/.../setup.c because start_parisc() calls
206	** start_kernel().
207	*/
208	switch (boot_cpu_data.cpu_type) {
209	case pcxl:
210	case pcxl2:
211		if (NULL == proc_gsc_root)
212		{
213			proc_gsc_root = proc_mkdir("bus/gsc", NULL);
214		}
215		break;
216        case pcxt_:
217        case pcxu:
218        case pcxu_:
219        case pcxw:
220        case pcxw_:
221        case pcxw2:
222                if (NULL == proc_runway_root)
223                {
224                        proc_runway_root = proc_mkdir("bus/runway", NULL);
225                }
226                break;
227	case mako:
228	case mako2:
229                if (NULL == proc_mckinley_root)
230                {
231                        proc_mckinley_root = proc_mkdir("bus/mckinley", NULL);
232                }
233                break;
234	default:
235		break;
236	}
237}
238
239static struct resource central_bus = {
240	.name	= "Central Bus",
241	.start	= F_EXTEND(0xfff80000),
242	.end    = F_EXTEND(0xfffaffff),
243	.flags	= IORESOURCE_MEM,
244};
245
246static struct resource local_broadcast = {
247	.name	= "Local Broadcast",
248	.start	= F_EXTEND(0xfffb0000),
249	.end	= F_EXTEND(0xfffdffff),
250	.flags	= IORESOURCE_MEM,
251};
252
253static struct resource global_broadcast = {
254	.name	= "Global Broadcast",
255	.start	= F_EXTEND(0xfffe0000),
256	.end	= F_EXTEND(0xffffffff),
257	.flags	= IORESOURCE_MEM,
258};
259
260static int __init parisc_init_resources(void)
261{
262	int result;
263
264	result = request_resource(&iomem_resource, &central_bus);
265	if (result < 0) {
266		printk(KERN_ERR
267		       "%s: failed to claim %s address space!\n",
268		       __FILE__, central_bus.name);
269		return result;
270	}
271
272	result = request_resource(&iomem_resource, &local_broadcast);
273	if (result < 0) {
274		printk(KERN_ERR
275		       "%s: failed to claim %saddress space!\n",
276		       __FILE__, local_broadcast.name);
277		return result;
278	}
279
280	result = request_resource(&iomem_resource, &global_broadcast);
281	if (result < 0) {
282		printk(KERN_ERR
283		       "%s: failed to claim %s address space!\n",
284		       __FILE__, global_broadcast.name);
285		return result;
286	}
287
288	return 0;
289}
290
291extern void gsc_init(void);
292extern void processor_init(void);
293extern void ccio_init(void);
294extern void hppb_init(void);
295extern void dino_init(void);
296extern void iosapic_init(void);
297extern void lba_init(void);
298extern void sba_init(void);
299extern void eisa_init(void);
300
301static int __init parisc_init(void)
302{
303	u32 osid = (OS_ID_LINUX << 16);
304
305	parisc_proc_mkdir();
306	parisc_init_resources();
307	do_device_inventory();                  /* probe for hardware */
308
309	parisc_pdc_chassis_init();
310
311	/* set up a new led state on systems shipped LED State panel */
312	pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BSTART);
313
314	/* tell PDC we're Linux. Nevermind failure. */
315	pdc_stable_write(0x40, &osid, sizeof(osid));
316
317	processor_init();
318	printk(KERN_INFO "CPU(s): %d x %s at %d.%06d MHz\n",
319			boot_cpu_data.cpu_count,
320			boot_cpu_data.cpu_name,
321			boot_cpu_data.cpu_hz / 1000000,
322			boot_cpu_data.cpu_hz % 1000000	);
323
324	parisc_setup_cache_timing();
325
326	/* These are in a non-obvious order, will fix when we have an iotree */
327#if defined(CONFIG_IOSAPIC)
328	iosapic_init();
329#endif
330#if defined(CONFIG_IOMMU_SBA)
331	sba_init();
332#endif
333#if defined(CONFIG_PCI_LBA)
334	lba_init();
335#endif
336
337	/* CCIO before any potential subdevices */
338#if defined(CONFIG_IOMMU_CCIO)
339	ccio_init();
340#endif
341
342	/*
343	 * Need to register Asp & Wax before the EISA adapters for the IRQ
344	 * regions.  EISA must come before PCI to be sure it gets IRQ region
345	 * 0.
346	 */
347#if defined(CONFIG_GSC_LASI) || defined(CONFIG_GSC_WAX)
348	gsc_init();
349#endif
350#ifdef CONFIG_EISA
351	eisa_init();
352#endif
353
354#if defined(CONFIG_HPPB)
355	hppb_init();
356#endif
357
358#if defined(CONFIG_GSC_DINO)
359	dino_init();
360#endif
361
362#ifdef CONFIG_CHASSIS_LCD_LED
363	register_led_regions();	/* register LED port info in procfs */
364#endif
365
366	return 0;
367}
368
369arch_initcall(parisc_init);
370