[mirror_ubuntu-jammy-kernel.git] / arch / parisc / kernel / setup.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *    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
 */

#include <linux/kernel.h>
#include <linux/initrd.h>
#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 <linux/export.h>
#include <linux/sched.h>
#include <linux/sched/clock.h>
#include <linux/start_kernel.h>

#include <asm/cacheflush.h>
#include <asm/processor.h>
#include <asm/sections.h>
#include <asm/pdc.h>
#include <asm/led.h>
#include <asm/machdep.h>	/* for pa7300lc_init() proto */
#include <asm/pdc_chassis.h>
#include <asm/io.h>
#include <asm/setup.h>
#include <asm/unwind.h>
#include <asm/smp.h>

static char __initdata command_line[COMMAND_LINE_SIZE];

/* Intended for ccio/sba/cpu statistics under /proc/bus/{runway|gsc} */
struct proc_dir_entry * proc_runway_root __read_mostly = NULL;
struct proc_dir_entry * proc_gsc_root __read_mostly = NULL;
struct proc_dir_entry * proc_mckinley_root __read_mostly = NULL;

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 */
		boot_command_line[0] = '\0';
	} else {
		strlcpy(boot_command_line, (char *)__va(boot_args[1]),
			COMMAND_LINE_SIZE);

#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, boot_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 to\n"
			"the PA-RISC 1.1 or 2.0 architecture specification.\n");

	case pcxl2:
		pa7300lc_init();
		break;
	default:
		break;
	}
}
#endif

extern void collect_boot_cpu_data(void);

void __init setup_arch(char **cmdline_p)
{
#ifdef CONFIG_64BIT
	extern int parisc_narrow_firmware;
#endif
	unwind_init();

	init_per_cpu(smp_processor_id());	/* Set Modes & Enable FP */

#ifdef CONFIG_64BIT
	printk(KERN_INFO "The 64-bit Kernel has started...\n");
#else
	printk(KERN_INFO "The 32-bit Kernel has started...\n");
#endif

	printk(KERN_INFO "Kernel default page size is %d KB. Huge pages ",
		(int)(PAGE_SIZE / 1024));
#ifdef CONFIG_HUGETLB_PAGE
	printk(KERN_CONT "enabled with %d MB physical and %d MB virtual size",
		 1 << (REAL_HPAGE_SHIFT - 20), 1 << (HPAGE_SHIFT - 20));
#else
	printk(KERN_CONT "disabled");
#endif
	printk(KERN_CONT ".\n");

	/*
	 * Check if initial kernel page mappings are sufficient.
	 * panic early if not, else we may access kernel functions
	 * and variables which can't be reached.
	 */
	if (__pa((unsigned long) &_end) >= KERNEL_INITIAL_SIZE)
		panic("KERNEL_INITIAL_ORDER too small!");

	pdc_console_init();

#ifdef CONFIG_64BIT
	if(parisc_narrow_firmware) {
		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 */
	parisc_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

#if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE)
	conswitchp = &dummy_con;	/* we use do_take_over_console() later ! */
#endif

	clear_sched_clock_stable();
}

/*
 * Display CPU info for all CPUs.
 * 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)
{
}

const struct seq_operations cpuinfo_op = {
	.start	= c_start,
	.next	= c_next,
	.stop	= c_stop,
	.show	= show_cpuinfo
};

static void __init 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", NULL);
		}
		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", NULL);
                }
                break;
	case mako:
	case mako2:
                if (NULL == proc_mckinley_root)
                {
                        proc_mckinley_root = proc_mkdir("bus/mckinley", NULL);
                }
                break;
	default:
		/* FIXME: this was added to prevent the compiler 
		 * complaining about missing pcx, pcxs and pcxt
		 * I'm assuming they have neither gsc nor runway */
		break;
	}
}

static struct resource central_bus = {
	.name	= "Central Bus",
	.start	= F_EXTEND(0xfff80000),
	.end    = F_EXTEND(0xfffaffff),
	.flags	= IORESOURCE_MEM,
};

static struct resource local_broadcast = {
	.name	= "Local Broadcast",
	.start	= F_EXTEND(0xfffb0000),
	.end	= F_EXTEND(0xfffdffff),
	.flags	= IORESOURCE_MEM,
};

static struct resource global_broadcast = {
	.name	= "Global Broadcast",
	.start	= F_EXTEND(0xfffe0000),
	.end	= F_EXTEND(0xffffffff),
	.flags	= IORESOURCE_MEM,
};

static int __init parisc_init_resources(void)
{
	int result;

	result = request_resource(&iomem_resource, &central_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 hppb_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);

static int __init parisc_init(void)
{
	u32 osid = (OS_ID_LINUX << 16);

	parisc_proc_mkdir();
	parisc_init_resources();
	do_device_inventory();                  /* probe for hardware */

	parisc_pdc_chassis_init();
	
	/* set up a new led state on systems shipped LED State panel */
	pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BSTART);

	/* tell PDC we're Linux. Nevermind failure. */
	pdc_stable_write(0x40, &osid, sizeof(osid));
	
	/* start with known state */
	flush_cache_all_local();
	flush_tlb_all_local(NULL);

	processor_init();
#ifdef CONFIG_SMP
	pr_info("CPU(s): %d out of %d %s at %d.%06d MHz online\n",
		num_online_cpus(), num_present_cpus(),
#else
	pr_info("CPU(s): 1 x %s at %d.%06d MHz\n",
#endif
			boot_cpu_data.cpu_name,
			boot_cpu_data.cpu_hz / 1000000,
			boot_cpu_data.cpu_hz % 1000000	);

#if defined(CONFIG_64BIT) && defined(CONFIG_SMP)
	/* Don't serialize TLB flushes if we run on one CPU only. */
	if (num_online_cpus() == 1)
		pa_serialize_tlb_flushes = 0;
#endif

	apply_alternatives_all();
	parisc_setup_cache_timing();

	/* 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_HPPB)
	hppb_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

	return 0;
}
arch_initcall(parisc_init);

void __init start_parisc(void)
{
	extern void early_trap_init(void);

	int ret, cpunum;
	struct pdc_coproc_cfg coproc_cfg;

	/* check QEMU/SeaBIOS marker in PAGE0 */
	running_on_qemu = (memcmp(&PAGE0->pad0, "SeaBIOS", 8) == 0);

	cpunum = smp_processor_id();

	init_cpu_topology();

	set_firmware_width_unlocked();

	ret = pdc_coproc_cfg_unlocked(&coproc_cfg);
	if (ret >= 0 && coproc_cfg.ccr_functional) {
		mtctl(coproc_cfg.ccr_functional, 10);

		per_cpu(cpu_data, cpunum).fp_rev = coproc_cfg.revision;
		per_cpu(cpu_data, cpunum).fp_model = coproc_cfg.model;

		asm volatile ("fstd	%fr0,8(%sp)");
	} else {
		panic("must have an fpu to boot linux");
	}

	early_trap_init(); /* initialize checksum of fault_vector */

	start_kernel();
	// not reached
}
Commit	Line	Data
de6cc651	1	// SPDX-License-Identifier: GPL-2.0-or-later
071327ec	2	/*
1da177e4 LT	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
1da177e4 LT	13	*/
1da177e4 LT	14
1da177e4 LT	15	#include <linux/kernel.h>
	16	#include <linux/initrd.h>
	17	#include <linux/init.h>
	18	#include <linux/console.h>
	19	#include <linux/seq_file.h>
	20	#define PCI_DEBUG
	21	#include <linux/pci.h>
	22	#undef PCI_DEBUG
	23	#include <linux/proc_fs.h>
a87df54e	24	#include <linux/export.h>
acb04058	25	#include <linux/sched.h>
e6017571	26	#include <linux/sched/clock.h>
08b8a99b	27	#include <linux/start_kernel.h>
1da177e4	28
3e803d3e	29	#include <asm/cacheflush.h>
1da177e4	30	#include <asm/processor.h>
690d097c	31	#include <asm/sections.h>
1da177e4 LT	32	#include <asm/pdc.h>
	33	#include <asm/led.h>
	34	#include <asm/machdep.h> /* for pa7300lc_init() proto */
	35	#include <asm/pdc_chassis.h>
	36	#include <asm/io.h>
	37	#include <asm/setup.h>
f0514ae3	38	#include <asm/unwind.h>
a7e6601f	39	#include <asm/smp.h>
1da177e4	40
01da41b8	41	static char __initdata command_line[COMMAND_LINE_SIZE];
1da177e4 LT	42
1da177e4 LT	43	/* Intended for ccio/sba/cpu statistics under /proc/bus/{runway\|gsc} */
8039de10 HD	44	struct proc_dir_entry * proc_runway_root __read_mostly = NULL;
	45	struct proc_dir_entry * proc_gsc_root __read_mostly = NULL;
	46	struct proc_dir_entry * proc_mckinley_root __read_mostly = NULL;
1da177e4	47
1da177e4 LT	48	void __init setup_cmdline(char **cmdline_p)
	49	{
	50	extern unsigned int boot_args[];
	51
	52	/* Collect stuff passed in from the boot loader */
	53
	54	/* boot_args[0] is free-mem start, boot_args[1] is ptr to command line */
	55	if (boot_args[0] < 64) {
	56	/* called from hpux boot loader */
668f9931	57	boot_command_line[0] = '\0';
1da177e4	58	} else {
ea99b1ad CG	59	strlcpy(boot_command_line, (char *)__va(boot_args[1]),
ea99b1ad CG	60	COMMAND_LINE_SIZE);
1da177e4 LT	61
	62	#ifdef CONFIG_BLK_DEV_INITRD
	63	if (boot_args[2] != 0) /* did palo pass us a ramdisk? */
	64	{
	65	initrd_start = (unsigned long)__va(boot_args[2]);
	66	initrd_end = (unsigned long)__va(boot_args[3]);
	67	}
	68	#endif
	69	}
	70
668f9931	71	strcpy(command_line, boot_command_line);
1da177e4 LT	72	*cmdline_p = command_line;
	73	}
	74
	75	#ifdef CONFIG_PA11
	76	void __init dma_ops_init(void)
	77	{
	78	switch (boot_cpu_data.cpu_type) {
	79	case pcx:
	80	/*
	81	* We've got way too many dependencies on 1.1 semantics
	82	* to support 1.0 boxes at this point.
	83	*/
	84	panic( "PA-RISC Linux currently only supports machines that conform to\n"
	85	"the PA-RISC 1.1 or 2.0 architecture specification.\n");
	86
1da177e4 LT	87	case pcxl2:
1da177e4 LT	88	pa7300lc_init();
1da177e4 LT	89	break;
	90	default:
	91	break;
	92	}
	93	}
	94	#endif
	95
1da177e4 LT	96	extern void collect_boot_cpu_data(void);
	97
	98	void __init setup_arch(char **cmdline_p)
	99	{
a8f44e38	100	#ifdef CONFIG_64BIT
1da177e4 LT	101	extern int parisc_narrow_firmware;
1da177e4 LT	102	#endif
f0514ae3	103	unwind_init();
1da177e4 LT	104
	105	init_per_cpu(smp_processor_id()); /* Set Modes & Enable FP */
	106
a8f44e38	107	#ifdef CONFIG_64BIT
1da177e4 LT	108	printk(KERN_INFO "The 64-bit Kernel has started...\n");
	109	#else
	110	printk(KERN_INFO "The 32-bit Kernel has started...\n");
	111	#endif
	112
736d2169 HD	113	printk(KERN_INFO "Kernel default page size is %d KB. Huge pages ",
	114	(int)(PAGE_SIZE / 1024));
	115	#ifdef CONFIG_HUGETLB_PAGE
	116	printk(KERN_CONT "enabled with %d MB physical and %d MB virtual size",
	117	1 << (REAL_HPAGE_SHIFT - 20), 1 << (HPAGE_SHIFT - 20));
	118	#else
	119	printk(KERN_CONT "disabled");
	120	#endif
	121	printk(KERN_CONT ".\n");
	122
690d097c HD	123	/*
	124	* Check if initial kernel page mappings are sufficient.
	125	* panic early if not, else we may access kernel functions
	126	* and variables which can't be reached.
	127	*/
	128	if (__pa((unsigned long) &_end) >= KERNEL_INITIAL_SIZE)
	129	panic("KERNEL_INITIAL_ORDER too small!");
6a45716a	130
1da177e4 LT	131	pdc_console_init();
1da177e4 LT	132
a8f44e38	133	#ifdef CONFIG_64BIT
1da177e4 LT	134	if(parisc_narrow_firmware) {
	135	printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n");
	136	}
	137	#endif
	138	setup_pdc();
	139	setup_cmdline(cmdline_p);
	140	collect_boot_cpu_data();
	141	do_memory_inventory(); /* probe for physical memory */
	142	parisc_cache_init();
	143	paging_init();
	144
	145	#ifdef CONFIG_CHASSIS_LCD_LED
	146	/* initialize the LCD/LED after boot_cpu_data is available ! */
	147	led_init(); /* LCD/LED initialization */
	148	#endif
	149
	150	#ifdef CONFIG_PA11
	151	dma_ops_init();
	152	#endif
	153
	154	#if defined(CONFIG_VT) && defined(CONFIG_DUMMY_CONSOLE)
155957f5	155	conswitchp = &dummy_con; /* we use do_take_over_console() later ! */
1da177e4 LT	156	#endif
1da177e4 LT	157
acb04058	158	clear_sched_clock_stable();
1da177e4 LT	159	}
	160
	161	/*
7022672e	162	* Display CPU info for all CPUs.
1da177e4 LT	163	* for parisc this is in processor.c
	164	*/
	165	extern int show_cpuinfo (struct seq_file m, void v);
	166
	167	static void *
	168	c_start (struct seq_file m, loff_t pos)
	169	{
	170	/* Looks like the caller will call repeatedly until we return
	171	* 0, signaling EOF perhaps. This could be used to sequence
	172	* through CPUs for example. Since we print all cpu info in our
	173	* show_cpuinfo() disregarding 'pos' (which I assume is 'v' above)
	174	* we only allow for one "position". */
	175	return ((long)pos < 1) ? (void )1 : NULL;
	176	}
	177
	178	static void *
	179	c_next (struct seq_file m, void v, loff_t *pos)
	180	{
	181	++*pos;
	182	return c_start(m, pos);
	183	}
	184
	185	static void
	186	c_stop (struct seq_file m, void v)
	187	{
	188	}
	189
03a44825	190	const struct seq_operations cpuinfo_op = {
1da177e4 LT	191	.start = c_start,
	192	.next = c_next,
	193	.stop = c_stop,
	194	.show = show_cpuinfo
	195	};
	196
	197	static void __init parisc_proc_mkdir(void)
	198	{
	199	/*
	200	** Can't call proc_mkdir() until after proc_root_init() has been
	201	** called by start_kernel(). In other words, this code can't
	202	** live in arch/.../setup.c because start_parisc() calls
	203	** start_kernel().
	204	*/
	205	switch (boot_cpu_data.cpu_type) {
	206	case pcxl:
	207	case pcxl2:
	208	if (NULL == proc_gsc_root)
	209	{
	210	proc_gsc_root = proc_mkdir("bus/gsc", NULL);
	211	}
	212	break;
	213	case pcxt_:
	214	case pcxu:
	215	case pcxu_:
	216	case pcxw:
	217	case pcxw_:
	218	case pcxw2:
	219	if (NULL == proc_runway_root)
	220	{
	221	proc_runway_root = proc_mkdir("bus/runway", NULL);
	222	}
	223	break;
	224	case mako:
2cbd42db	225	case mako2:
1da177e4 LT	226	if (NULL == proc_mckinley_root)
	227	{
	228	proc_mckinley_root = proc_mkdir("bus/mckinley", NULL);
	229	}
	230	break;
	231	default:
	232	/* FIXME: this was added to prevent the compiler
	233	* complaining about missing pcx, pcxs and pcxt
	234	* I'm assuming they have neither gsc nor runway */
	235	break;
	236	}
	237	}
	238
	239	static struct resource central_bus = {
	240	.name = "Central Bus",
	241	.start = F_EXTEND(0xfff80000),
	242	.end = F_EXTEND(0xfffaffff),
	243	.flags = IORESOURCE_MEM,
	244	};
	245
	246	static struct resource local_broadcast = {
	247	.name = "Local Broadcast",
	248	.start = F_EXTEND(0xfffb0000),
	249	.end = F_EXTEND(0xfffdffff),
	250	.flags = IORESOURCE_MEM,
	251	};
	252
	253	static struct resource global_broadcast = {
	254	.name = "Global Broadcast",
	255	.start = F_EXTEND(0xfffe0000),
	256	.end = F_EXTEND(0xffffffff),
	257	.flags = IORESOURCE_MEM,
	258	};
	259
	260	static 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
291	extern void gsc_init(void);
292	extern void processor_init(void);
293	extern void ccio_init(void);
294	extern void hppb_init(void);
295	extern void dino_init(void);
296	extern void iosapic_init(void);
297	extern void lba_init(void);
298	extern void sba_init(void);
299	extern void eisa_init(void);
300
301	static int __init parisc_init(void)
302	{
ec1fdc24	303	u32 osid = (OS_ID_LINUX << 16);
3f9edb53	304
1da177e4 LT	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);
3f9edb53 TV	313
	314	/* tell PDC we're Linux. Nevermind failure. */
	315	pdc_stable_write(0x40, &osid, sizeof(osid));
1da177e4	316
741dc7bf JDA	317	/* start with known state */
	318	flush_cache_all_local();
	319	flush_tlb_all_local(NULL);
	320
1da177e4	321	processor_init();
3a7452b4 HD	322	#ifdef CONFIG_SMP
	323	pr_info("CPU(s): %d out of %d %s at %d.%06d MHz online\n",
	324	num_online_cpus(), num_present_cpus(),
	325	#else
	326	pr_info("CPU(s): 1 x %s at %d.%06d MHz\n",
	327	#endif
1da177e4 LT	328	boot_cpu_data.cpu_name,
	329	boot_cpu_data.cpu_hz / 1000000,
	330	boot_cpu_data.cpu_hz % 1000000 );
	331
b37d1c18 MP	332	#if defined(CONFIG_64BIT) && defined(CONFIG_SMP)
	333	/* Don't serialize TLB flushes if we run on one CPU only. */
	334	if (num_online_cpus() == 1)
	335	pa_serialize_tlb_flushes = 0;
	336	#endif
	337
3847dab7	338	apply_alternatives_all();
1da177e4 LT	339	parisc_setup_cache_timing();
	340
	341	/* These are in a non-obvious order, will fix when we have an iotree */
	342	#if defined(CONFIG_IOSAPIC)
	343	iosapic_init();
	344	#endif
	345	#if defined(CONFIG_IOMMU_SBA)
	346	sba_init();
	347	#endif
	348	#if defined(CONFIG_PCI_LBA)
	349	lba_init();
	350	#endif
	351
	352	/* CCIO before any potential subdevices */
	353	#if defined(CONFIG_IOMMU_CCIO)
	354	ccio_init();
	355	#endif
	356
	357	/*
	358	* Need to register Asp & Wax before the EISA adapters for the IRQ
	359	* regions. EISA must come before PCI to be sure it gets IRQ region
	360	* 0.
	361	*/
	362	#if defined(CONFIG_GSC_LASI) \|\| defined(CONFIG_GSC_WAX)
	363	gsc_init();
	364	#endif
	365	#ifdef CONFIG_EISA
	366	eisa_init();
	367	#endif
	368
	369	#if defined(CONFIG_HPPB)
	370	hppb_init();
	371	#endif
	372
	373	#if defined(CONFIG_GSC_DINO)
	374	dino_init();
	375	#endif
	376
	377	#ifdef CONFIG_CHASSIS_LCD_LED
	378	register_led_regions(); /* register LED port info in procfs */
	379	#endif
	380
	381	return 0;
	382	}
1da177e4 LT	383	arch_initcall(parisc_init);
1da177e4 LT	384
08b8a99b	385	void __init start_parisc(void)
089d5528	386	{
4182d0cd	387	extern void early_trap_init(void);
089d5528 KM	388
	389	int ret, cpunum;
	390	struct pdc_coproc_cfg coproc_cfg;
	391
d006e95b HD	392	/* check QEMU/SeaBIOS marker in PAGE0 */
	393	running_on_qemu = (memcmp(&PAGE0->pad0, "SeaBIOS", 8) == 0);
	394
089d5528 KM	395	cpunum = smp_processor_id();
089d5528 KM	396
bf7b4c1b HD	397	init_cpu_topology();
bf7b4c1b HD	398
089d5528 KM	399	set_firmware_width_unlocked();
	400
	401	ret = pdc_coproc_cfg_unlocked(&coproc_cfg);
	402	if (ret >= 0 && coproc_cfg.ccr_functional) {
	403	mtctl(coproc_cfg.ccr_functional, 10);
	404
ef017beb HD	405	per_cpu(cpu_data, cpunum).fp_rev = coproc_cfg.revision;
ef017beb HD	406	per_cpu(cpu_data, cpunum).fp_model = coproc_cfg.model;
089d5528 KM	407
	408	asm volatile ("fstd %fr0,8(%sp)");
	409	} else {
	410	panic("must have an fpu to boot linux");
	411	}
	412
4182d0cd HD	413	early_trap_init(); /* initialize checksum of fault_vector */
4182d0cd HD	414
089d5528 KM	415	start_kernel();
	416	// not reached
	417	}