xref: /netbsd/sys/arch/epoc32/epoc32/machdep.c (revision 70e8a6bc)
1*70e8a6bcSskrll /*	$NetBSD: machdep.c,v 1.9 2023/04/20 08:28:03 skrll Exp $	*/
268122621Skiyohara /*
368122621Skiyohara  * Copyright (c) 2012, 2013 KIYOHARA Takashi
468122621Skiyohara  * All rights reserved.
568122621Skiyohara  *
668122621Skiyohara  * Redistribution and use in source and binary forms, with or without
768122621Skiyohara  * modification, are permitted provided that the following conditions
868122621Skiyohara  * are met:
968122621Skiyohara  * 1. Redistributions of source code must retain the above copyright
1068122621Skiyohara  *    notice, this list of conditions and the following disclaimer.
1168122621Skiyohara  * 2. Redistributions in binary form must reproduce the above copyright
1268122621Skiyohara  *    notice, this list of conditions and the following disclaimer in the
1368122621Skiyohara  *    documentation and/or other materials provided with the distribution.
1468122621Skiyohara  *
1568122621Skiyohara  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
1668122621Skiyohara  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
1768122621Skiyohara  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
1868122621Skiyohara  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
1968122621Skiyohara  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
2068122621Skiyohara  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
2168122621Skiyohara  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2268122621Skiyohara  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
2368122621Skiyohara  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
2468122621Skiyohara  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
2568122621Skiyohara  * POSSIBILITY OF SUCH DAMAGE.
2668122621Skiyohara  */
2768122621Skiyohara 
2868122621Skiyohara #include <sys/cdefs.h>
29*70e8a6bcSskrll __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.9 2023/04/20 08:28:03 skrll Exp $");
3068122621Skiyohara 
3168122621Skiyohara #include "clpscom.h"
3268122621Skiyohara #include "clpslcd.h"
3368122621Skiyohara #include "wmcom.h"
3468122621Skiyohara #include "wmlcd.h"
3568122621Skiyohara #include "epockbd.h"
3668122621Skiyohara #include "ksyms.h"
3768122621Skiyohara #include "opt_ddb.h"
3868122621Skiyohara #include "opt_md.h"
3968122621Skiyohara #include "opt_modular.h"
4068122621Skiyohara 
4168122621Skiyohara #include <sys/types.h>
4268122621Skiyohara #include <sys/param.h>
4368122621Skiyohara #include <sys/systm.h>
4468122621Skiyohara #include <sys/bus.h>
4568122621Skiyohara #include <sys/kernel.h>
4668122621Skiyohara #include <sys/lwp.h>
4768122621Skiyohara #include <sys/pmf.h>
4868122621Skiyohara #include <sys/reboot.h>
4968122621Skiyohara #include <sys/termios.h>
5068122621Skiyohara 
5168122621Skiyohara #include <uvm/uvm_extern.h>
5268122621Skiyohara 
53286cea2bSmatt #include <dev/cons.h>
54286cea2bSmatt #include <dev/md.h>
55286cea2bSmatt 
56286cea2bSmatt #include <arm/locore.h>
57286cea2bSmatt #include <arm/undefined.h>
5868122621Skiyohara #include <arm/arm32/machdep.h>
5968122621Skiyohara #include <arm/arm32/pmap.h>
6068122621Skiyohara 
6168122621Skiyohara #include <machine/bootconfig.h>
6268122621Skiyohara #include <machine/bootinfo.h>
6368122621Skiyohara #include <machine/epoc32.h>
6468122621Skiyohara 
6568122621Skiyohara #include <arm/clps711x/clpssocvar.h>
6668122621Skiyohara #include <epoc32/windermere/windermerevar.h>
6768122621Skiyohara #include <epoc32/windermere/windermerereg.h>
6868122621Skiyohara #include <epoc32/dev/epockbdvar.h>
6968122621Skiyohara 
7068122621Skiyohara #include <machine/db_machdep.h>
7168122621Skiyohara #include <ddb/db_extern.h>
7268122621Skiyohara 
7368122621Skiyohara #define KERNEL_OFFSET		0x00030000
7468122621Skiyohara #define KERNEL_TEXT_BASE	(KERNEL_BASE + KERNEL_OFFSET)
7568122621Skiyohara #ifndef KERNEL_VM_BASE
7668122621Skiyohara #define KERNEL_VM_BASE		(KERNEL_BASE + 0x00300000)
7768122621Skiyohara #endif
7868122621Skiyohara #define KERNEL_VM_SIZE		0x04000000	/* XXXX 64M */
7968122621Skiyohara 
8068122621Skiyohara /* Define various stack sizes in pages */
8168122621Skiyohara #define IRQ_STACK_SIZE	1
8268122621Skiyohara #define ABT_STACK_SIZE	1
8368122621Skiyohara #define UND_STACK_SIZE	1
8468122621Skiyohara 
8568122621Skiyohara 
8668122621Skiyohara BootConfig bootconfig;		/* Boot config storage */
872a929cd9Skiyohara static char bootargs[256];
8868122621Skiyohara char *boot_args = NULL;
8968122621Skiyohara 
904bf1e733Smatt vaddr_t physical_start;
914bf1e733Smatt vaddr_t physical_freestart;
924bf1e733Smatt vaddr_t physical_freeend;
934bf1e733Smatt vaddr_t physical_end;
9468122621Skiyohara u_int free_pages;
9568122621Skiyohara 
964bf1e733Smatt paddr_t msgbufphys;
9768122621Skiyohara 
9868122621Skiyohara enum {
9968122621Skiyohara 	KERNEL_PT_SYS = 0,	/* Page table for mapping proc0 zero page */
10068122621Skiyohara 	KERNEL_PT_KERNEL,	/* Page table for mapping kernel and VM */
10168122621Skiyohara 
10268122621Skiyohara 	NUM_KERNEL_PTS
10368122621Skiyohara };
10468122621Skiyohara pv_addr_t kernel_pt_table[NUM_KERNEL_PTS];
10568122621Skiyohara 
10668122621Skiyohara char epoc32_model[256];
10768122621Skiyohara int epoc32_fb_width;
10868122621Skiyohara int epoc32_fb_height;
10968122621Skiyohara int epoc32_fb_addr;
11068122621Skiyohara 
11168122621Skiyohara /*
11268122621Skiyohara  * Static device mappings. These peripheral registers are mapped at
11368122621Skiyohara  * fixed virtual addresses very early in initarm() so that we can use
11468122621Skiyohara  * them while booting the kernel, and stay at the same address
11568122621Skiyohara  * throughout whole kernel's life time.
11668122621Skiyohara  *
11768122621Skiyohara  * We use this table twice; once with bootstrap page table, and once
11868122621Skiyohara  * with kernel's page table which we build up in initarm().
11968122621Skiyohara  *
12068122621Skiyohara  * Since we map these registers into the bootstrap page table using
12168122621Skiyohara  * pmap_devmap_bootstrap() which calls pmap_map_chunk(), we map
12268122621Skiyohara  * registers segment-aligned and segment-rounded in order to avoid
12368122621Skiyohara  * using the 2nd page tables.
12468122621Skiyohara  */
12568122621Skiyohara 
12668122621Skiyohara static const struct pmap_devmap epoc32_devmap[] = {
127*70e8a6bcSskrll 	DEVMAP_ENTRY(
12868122621Skiyohara 		ARM7XX_INTRREG_VBASE,		/* included com, lcd-ctrl */
129*70e8a6bcSskrll 		ARM7XX_INTRREG_BASE,
130*70e8a6bcSskrll 		ARM7XX_INTRREG_SIZE
131*70e8a6bcSskrll 	),
13268122621Skiyohara 
133*70e8a6bcSskrll 	DEVMAP_ENTRY_END
13468122621Skiyohara };
13568122621Skiyohara static const struct pmap_devmap epoc32_fb_devmap[] = {
136*70e8a6bcSskrll 	DEVMAP_ENTRY(
13768122621Skiyohara 		ARM7XX_FB_VBASE,
138*70e8a6bcSskrll 		ARM7XX_FB_BASE,
139*70e8a6bcSskrll 		ARM7XX_FB_SIZE
140*70e8a6bcSskrll 	),
14168122621Skiyohara 
142*70e8a6bcSskrll 	DEVMAP_ENTRY_END
14368122621Skiyohara };
14468122621Skiyohara 
14568122621Skiyohara /*
146e93b22b4Sskrll  * vaddr_t initarm(...)
14768122621Skiyohara  *
14868122621Skiyohara  * Initial entry point on startup. This gets called before main() is
14968122621Skiyohara  * entered.
15068122621Skiyohara  * It should be responsible for setting up everything that must be
15168122621Skiyohara  * in place when main is called.
15268122621Skiyohara  * This includes
15368122621Skiyohara  *   Taking a copy of the boot configuration structure.
15468122621Skiyohara  *   Initialising the physical console so characters can be printed.
15568122621Skiyohara  *   Setting up page tables for the kernel
15668122621Skiyohara  *   Relocating the kernel to the bottom of physical memory
15768122621Skiyohara  */
158e93b22b4Sskrll vaddr_t
initarm(void * arg)15968122621Skiyohara initarm(void *arg)
16068122621Skiyohara {
16168122621Skiyohara 	extern char _end[];
16268122621Skiyohara 	extern vaddr_t startup_pagetable;
16368122621Skiyohara 	extern struct btinfo_common bootinfo;
16468122621Skiyohara 	struct btinfo_common *btinfo = &bootinfo;
16568122621Skiyohara 	struct btinfo_model *model = NULL;
16668122621Skiyohara 	struct btinfo_memory *memory = NULL;
16768122621Skiyohara 	struct btinfo_video *video = NULL;
1682a929cd9Skiyohara 	struct btinfo_bootargs *args = NULL;
16968122621Skiyohara 	u_int l1pagetable, _end_physical;
17068122621Skiyohara 	int loop, loop1, n, i;
17168122621Skiyohara 
17268122621Skiyohara 	/*
17368122621Skiyohara 	 * Heads up ... Setup the CPU / MMU / TLB functions
17468122621Skiyohara 	 */
17568122621Skiyohara 	if (set_cpufuncs())
17668122621Skiyohara 		panic("cpu not recognized!");
17768122621Skiyohara 
17868122621Skiyohara 	/* map some peripheral registers at static I/O area. */
17968122621Skiyohara 	pmap_devmap_bootstrap(startup_pagetable, epoc32_devmap);
18068122621Skiyohara 
18168122621Skiyohara 	bootconfig.dramblocks = 0;
18268122621Skiyohara 	while (btinfo->type != BTINFO_NONE) {
18368122621Skiyohara 		switch (btinfo->type) {
18468122621Skiyohara 		case BTINFO_MODEL:
18568122621Skiyohara 			model = (struct btinfo_model *)btinfo;
18668122621Skiyohara 			btinfo = &(model + 1)->common;
18768122621Skiyohara 			strncpy(epoc32_model, model->model,
18868122621Skiyohara 			    sizeof(epoc32_model));
18968122621Skiyohara 			break;
19068122621Skiyohara 
19168122621Skiyohara 		case BTINFO_MEMORY:
19268122621Skiyohara 			memory = (struct btinfo_memory *)btinfo;
19368122621Skiyohara 			btinfo = &(memory + 1)->common;
19468122621Skiyohara 
19568122621Skiyohara 			/*
19668122621Skiyohara 			 * Fake bootconfig structure for the benefit of pmap.c
19768122621Skiyohara 			 */
19868122621Skiyohara 			i = bootconfig.dramblocks;
19968122621Skiyohara 			bootconfig.dram[i].address = memory->address;
20068122621Skiyohara 			bootconfig.dram[i].pages = memory->size / PAGE_SIZE;
20168122621Skiyohara 			bootconfig.dramblocks++;
20268122621Skiyohara 			break;
20368122621Skiyohara 
20468122621Skiyohara 		case BTINFO_VIDEO:
20568122621Skiyohara 			video = (struct btinfo_video *)btinfo;
20668122621Skiyohara 			btinfo = &(video + 1)->common;
20768122621Skiyohara 			epoc32_fb_width = video->width;
20868122621Skiyohara 			epoc32_fb_height = video->height;
20968122621Skiyohara 			break;
2102a929cd9Skiyohara 
2112a929cd9Skiyohara 		case BTINFO_BOOTARGS:
2122a929cd9Skiyohara 			args = (struct btinfo_bootargs *)btinfo;
2132a929cd9Skiyohara 			btinfo = &(args + 1)->common;
2142a929cd9Skiyohara 			memcpy(bootargs, args->bootargs,
215a8a5c538Sriastradh 			    uimin(sizeof(bootargs), sizeof(args->bootargs)));
2162a929cd9Skiyohara 			bootargs[sizeof(bootargs) - 1] = '\0';
2172a929cd9Skiyohara 			boot_args = bootargs;
2182a929cd9Skiyohara 			break;
2192a929cd9Skiyohara 
2202a929cd9Skiyohara 		default:
2212a929cd9Skiyohara #define NEXT_BOOTINFO(bi) (struct btinfo_common *)((char *)bi + (bi)->len)
2222a929cd9Skiyohara 
2232a929cd9Skiyohara 			btinfo = NEXT_BOOTINFO(btinfo);
22468122621Skiyohara 		}
22568122621Skiyohara 	}
22668122621Skiyohara 	if (bootconfig.dramblocks == 0)
22768122621Skiyohara 		panic("BTINFO_MEMORY not found");
22868122621Skiyohara 
22968122621Skiyohara 	consinit();
23068122621Skiyohara 
2312a929cd9Skiyohara 	if (boot_args != NULL)
2322a929cd9Skiyohara 		parse_mi_bootargs(boot_args);
2332a929cd9Skiyohara 
23468122621Skiyohara 	physical_start = bootconfig.dram[0].address;
23568122621Skiyohara 	physical_freestart = bootconfig.dram[0].address;
23668122621Skiyohara 	physical_freeend = KERNEL_TEXT_BASE;
23768122621Skiyohara 
23868122621Skiyohara 	free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE;
23968122621Skiyohara 
24068122621Skiyohara 	/* Define a macro to simplify memory allocation */
24168122621Skiyohara #define valloc_pages(var, np)				\
24268122621Skiyohara 	alloc_pages((var).pv_pa, (np));			\
24368122621Skiyohara 	(var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start;
24468122621Skiyohara 
24568122621Skiyohara #define alloc_pages(var, np)				\
24668122621Skiyohara 	physical_freeend -= ((np) * PAGE_SIZE);		\
24768122621Skiyohara 	if (physical_freeend < physical_freestart)	\
24868122621Skiyohara 		panic("initarm: out of memory");	\
24968122621Skiyohara 	(var) = physical_freeend;			\
25068122621Skiyohara 	free_pages -= (np);				\
25168122621Skiyohara 	memset((char *)(var), 0, ((np) * PAGE_SIZE));
25268122621Skiyohara 
25368122621Skiyohara 	loop1 = 0;
25468122621Skiyohara 	for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) {
25568122621Skiyohara 		/* Are we 16KB aligned for an L1 ? */
25668122621Skiyohara 		if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0
25768122621Skiyohara 		    && kernel_l1pt.pv_pa == 0) {
25868122621Skiyohara 			valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE);
25968122621Skiyohara 		} else {
26068122621Skiyohara 			valloc_pages(kernel_pt_table[loop1],
26168122621Skiyohara 			    L2_TABLE_SIZE / PAGE_SIZE);
26268122621Skiyohara 			++loop1;
26368122621Skiyohara 		}
26468122621Skiyohara 	}
26568122621Skiyohara 
26668122621Skiyohara 	/* This should never be able to happen but better confirm that. */
26768122621Skiyohara 	if (!kernel_l1pt.pv_pa ||
26868122621Skiyohara 	    (kernel_l1pt.pv_pa & (L1_TABLE_SIZE - 1)) != 0)
26968122621Skiyohara 		panic("initarm: Failed to align the kernel page directory");
27068122621Skiyohara 
27168122621Skiyohara 	/*
27268122621Skiyohara 	 * Allocate a page for the system page mapped to V0x00000000
27368122621Skiyohara 	 * This page will just contain the system vectors and can be
27468122621Skiyohara 	 * shared by all processes.
27568122621Skiyohara 	 */
27668122621Skiyohara 	alloc_pages(systempage.pv_pa, 1);
27768122621Skiyohara 
27868122621Skiyohara 	/* Allocate stacks for all modes */
27968122621Skiyohara 	valloc_pages(irqstack, IRQ_STACK_SIZE);
28068122621Skiyohara 	valloc_pages(abtstack, ABT_STACK_SIZE);
28168122621Skiyohara 	valloc_pages(undstack, UND_STACK_SIZE);
28268122621Skiyohara 	valloc_pages(kernelstack, UPAGES);
28368122621Skiyohara 
28468122621Skiyohara 	alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE);
28568122621Skiyohara 
28668122621Skiyohara 	/*
28768122621Skiyohara 	 * Now we start construction of the L1 page table
28868122621Skiyohara 	 * We start by mapping the L2 page tables into the L1.
28968122621Skiyohara 	 * This means that we can replace L1 mappings later on if necessary
29068122621Skiyohara 	 */
29168122621Skiyohara 	l1pagetable = kernel_l1pt.pv_va;
29268122621Skiyohara 
29368122621Skiyohara 	/* Map the L2 pages tables in the L1 page table */
29468122621Skiyohara 	pmap_link_l2pt(l1pagetable, 0x00000000,
29568122621Skiyohara 	    &kernel_pt_table[KERNEL_PT_SYS]);
29668122621Skiyohara 	pmap_link_l2pt(l1pagetable, KERNEL_BASE,
29768122621Skiyohara 	    &kernel_pt_table[KERNEL_PT_KERNEL]);
29868122621Skiyohara 
29968122621Skiyohara 	/* update the top of the kernel VM */
30068122621Skiyohara 	pmap_curmaxkvaddr = KERNEL_VM_BASE;
30168122621Skiyohara 
30268122621Skiyohara 	/* Now we fill in the L2 pagetable for the kernel static code/data */
30368122621Skiyohara 	{
30468122621Skiyohara 		extern char etext[];
30568122621Skiyohara 		size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE;
30668122621Skiyohara 		size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE;
30768122621Skiyohara 		size_t datasize;
30868122621Skiyohara 		PhysMem *dram = bootconfig.dram;
30968122621Skiyohara 		u_int logical, physical, size;
31068122621Skiyohara 
31168122621Skiyohara 		textsize = (textsize + PGOFSET) & ~PGOFSET;
31268122621Skiyohara 		totalsize = (totalsize + PGOFSET) & ~PGOFSET;
31368122621Skiyohara 		datasize = totalsize - textsize;	/* data and bss */
31468122621Skiyohara 
31568122621Skiyohara 		logical = KERNEL_OFFSET;	/* offset of kernel in RAM */
31668122621Skiyohara 		physical = KERNEL_OFFSET;
31768122621Skiyohara 		i = 0;
31868122621Skiyohara 		size = dram[i].pages * PAGE_SIZE - physical;
31968122621Skiyohara 		/* Map kernel text section. */
32068122621Skiyohara 		while (1 /*CONSTINT*/) {
32168122621Skiyohara 			size = pmap_map_chunk(l1pagetable,
32268122621Skiyohara 			    KERNEL_BASE + logical, dram[i].address + physical,
32368122621Skiyohara 			    textsize < size ? textsize : size,
32468122621Skiyohara 			    VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
32568122621Skiyohara 			logical += size;
32668122621Skiyohara 			physical += size;
32768122621Skiyohara 			textsize -= size;
32868122621Skiyohara 			if (physical >= dram[i].pages * PAGE_SIZE) {
32968122621Skiyohara 				i++;
33068122621Skiyohara 				size = dram[i].pages * PAGE_SIZE;
33168122621Skiyohara 				physical = 0;
33268122621Skiyohara 			}
33368122621Skiyohara 			if (textsize == 0)
33468122621Skiyohara 				break;
33568122621Skiyohara 		}
33668122621Skiyohara 		size = dram[i].pages * PAGE_SIZE - physical;
33768122621Skiyohara 		/* Map data and bss section. */
33868122621Skiyohara 		while (1 /*CONSTINT*/) {
33968122621Skiyohara 			size = pmap_map_chunk(l1pagetable,
34068122621Skiyohara 			    KERNEL_BASE + logical, dram[i].address + physical,
34168122621Skiyohara 			    datasize < size ? datasize : size,
34268122621Skiyohara 			    VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
34368122621Skiyohara 			logical += size;
34468122621Skiyohara 			physical += size;
34568122621Skiyohara 			datasize -= size;
34668122621Skiyohara 			if (physical >= dram[i].pages * PAGE_SIZE) {
34768122621Skiyohara 				i++;
34868122621Skiyohara 				size = dram[i].pages * PAGE_SIZE;
34968122621Skiyohara 				physical = 0;
35068122621Skiyohara 			}
35168122621Skiyohara 			if (datasize == 0)
35268122621Skiyohara 				break;
35368122621Skiyohara 		}
35468122621Skiyohara 		_end_physical = dram[i].address + physical;
35568122621Skiyohara 		n = i;
35668122621Skiyohara 		physical_end = dram[n].address + dram[n].pages * PAGE_SIZE;
35768122621Skiyohara 		n++;
35868122621Skiyohara 	}
35968122621Skiyohara 
36068122621Skiyohara 	/* Map the stack pages */
36168122621Skiyohara 	pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa,
36268122621Skiyohara 	    IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
36368122621Skiyohara 	pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa,
36468122621Skiyohara 	    ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
36568122621Skiyohara 	pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa,
36668122621Skiyohara 	    UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
36768122621Skiyohara 	pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa,
36868122621Skiyohara 	    UPAGES * PAGE_SIZE, VM_PROT_READ | VM_PROT_WRITE, PTE_CACHE);
36968122621Skiyohara 
37068122621Skiyohara         pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa,
37168122621Skiyohara 	    L1_TABLE_SIZE, VM_PROT_READ | VM_PROT_WRITE, PTE_PAGETABLE);
37268122621Skiyohara 
37368122621Skiyohara 	for (loop = 0; loop < NUM_KERNEL_PTS; ++loop)
37468122621Skiyohara 		pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va,
37568122621Skiyohara 		    kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE,
37668122621Skiyohara 		    VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE);
37768122621Skiyohara 
37868122621Skiyohara 	/* Map the vector page. */
37968122621Skiyohara 	pmap_map_entry(l1pagetable, vector_page, systempage.pv_pa,
38068122621Skiyohara 	    VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE);
38168122621Skiyohara 
38268122621Skiyohara 	pmap_devmap_bootstrap(l1pagetable, epoc32_devmap);
38368122621Skiyohara 	pmap_devmap_bootstrap(l1pagetable, epoc32_fb_devmap);
38468122621Skiyohara 	epoc32_fb_addr = ARM7XX_FB_VBASE;
38568122621Skiyohara 
38668122621Skiyohara 	/*
38768122621Skiyohara 	 * Now we have the real page tables in place so we can switch to them.
38868122621Skiyohara 	 * Once this is done we will be running with the REAL kernel page
38968122621Skiyohara 	 * tables.
39068122621Skiyohara 	 */
39168122621Skiyohara 
39268122621Skiyohara 	/* Switch tables */
39368122621Skiyohara 	cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT);
39468122621Skiyohara 	cpu_setttb(kernel_l1pt.pv_pa, true);
39568122621Skiyohara 	cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2));
39668122621Skiyohara 
39768122621Skiyohara 	/*
39868122621Skiyohara 	 * Moved from cpu_startup() as data_abort_handler() references
39968122621Skiyohara 	 * this during uvm init
40068122621Skiyohara 	 */
40168122621Skiyohara 	uvm_lwp_setuarea(&lwp0, kernelstack.pv_va);
40268122621Skiyohara 
40368122621Skiyohara 	arm32_vector_init(ARM_VECTORS_LOW, ARM_VEC_ALL);
40468122621Skiyohara 
40568122621Skiyohara 	/*
40668122621Skiyohara 	 * Pages were allocated during the secondary bootstrap for the
40768122621Skiyohara 	 * stacks for different CPU modes.
40868122621Skiyohara 	 * We must now set the r13 registers in the different CPU modes to
40968122621Skiyohara 	 * point to these stacks.
41068122621Skiyohara 	 * Since the ARM stacks use STMFD etc. we must set r13 to the top end
41168122621Skiyohara 	 * of the stack memory.
41268122621Skiyohara 	 */
41368122621Skiyohara 
41468122621Skiyohara 	set_stackptr(PSR_IRQ32_MODE,
41568122621Skiyohara 	    irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE);
41668122621Skiyohara 	set_stackptr(PSR_ABT32_MODE,
41768122621Skiyohara 	    abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE);
41868122621Skiyohara 	set_stackptr(PSR_UND32_MODE,
41968122621Skiyohara 	    undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE);
42068122621Skiyohara 
42168122621Skiyohara 	/*
42268122621Skiyohara 	 * Well we should set a data abort handler.
42368122621Skiyohara 	 * Once things get going this will change as we will need a proper
42468122621Skiyohara 	 * handler. Until then we will use a handler that just panics but
42568122621Skiyohara 	 * tells us why.
42668122621Skiyohara 	 * Initialisation of the vectors will just panic on a data abort.
42768122621Skiyohara 	 * This just fills in a slightly better one.
42868122621Skiyohara 	 */
42968122621Skiyohara 	data_abort_handler_address = (u_int)data_abort_handler;
43068122621Skiyohara 	prefetch_abort_handler_address = (u_int)prefetch_abort_handler;
43168122621Skiyohara 	undefined_handler_address = (u_int)undefinedinstruction_bounce;
43268122621Skiyohara 
43368122621Skiyohara 	/* Initialise the undefined instruction handlers */
43468122621Skiyohara 	undefined_init();
43568122621Skiyohara 
43668122621Skiyohara         /* Load memory into UVM. */
4370dec4042Scherry 	uvm_md_init();
43868122621Skiyohara 	uvm_page_physload(
43968122621Skiyohara 	    atop(_end_physical), atop(physical_end),
44068122621Skiyohara 	    atop(_end_physical), atop(physical_end),
44168122621Skiyohara 	    VM_FREELIST_DEFAULT);
44268122621Skiyohara 	physmem = bootconfig.dram[0].pages;
44368122621Skiyohara 	for (i = 1; i < n; i++)
44468122621Skiyohara 		physmem += bootconfig.dram[i].pages;
44568122621Skiyohara 	if (physmem < 0x400000)
44668122621Skiyohara 		physical_end = 0;
44768122621Skiyohara 	for (loop = n; loop < bootconfig.dramblocks; loop++) {
44868122621Skiyohara 		size_t start = bootconfig.dram[loop].address;
44968122621Skiyohara 		size_t size = bootconfig.dram[loop].pages * PAGE_SIZE;
45068122621Skiyohara 
45168122621Skiyohara 		uvm_page_physload(atop(start), atop(start + size),
45268122621Skiyohara 		    atop(start), atop(start + size), VM_FREELIST_DEFAULT);
45368122621Skiyohara 		physmem += bootconfig.dram[loop].pages;
45468122621Skiyohara 
45568122621Skiyohara 		if (physical_end == 0 && physmem >= 0x400000 / PAGE_SIZE)
45668122621Skiyohara 			/* Fixup physical_end for Series5. */
45768122621Skiyohara 			physical_end = start + size;
45868122621Skiyohara 	}
45968122621Skiyohara 
46021c0cad0Sskrll 	/* Boot strap pmap telling it where managed kernel virtual memory is */
46168122621Skiyohara 	pmap_bootstrap(KERNEL_VM_BASE, KERNEL_VM_BASE + KERNEL_VM_SIZE);
46268122621Skiyohara 
46368122621Skiyohara #ifdef __HAVE_MEMORY_DISK__
46468122621Skiyohara 	md_root_setconf(memory_disk, sizeof memory_disk);
46568122621Skiyohara #endif
46668122621Skiyohara 
46768122621Skiyohara #if NKSYMS || defined(DDB) || defined(MODULAR)
46868122621Skiyohara 	/* Firmware doesn't load symbols. */
46968122621Skiyohara 	ddb_init(0, NULL, NULL);
47068122621Skiyohara #endif
47168122621Skiyohara 
47268122621Skiyohara #ifdef DDB
47368122621Skiyohara 	db_machine_init();
47468122621Skiyohara 	if (boothowto & RB_KDB)
47568122621Skiyohara 		Debugger();
47668122621Skiyohara #endif
47768122621Skiyohara 
47868122621Skiyohara 	/* We return the new stack pointer address */
47968122621Skiyohara 	return kernelstack.pv_va + USPACE_SVC_STACK_TOP;
48068122621Skiyohara }
48168122621Skiyohara 
48268122621Skiyohara void
cpu_reboot(int howto,char * bootstr)48368122621Skiyohara cpu_reboot(int howto, char *bootstr)
48468122621Skiyohara {
48568122621Skiyohara 
48668122621Skiyohara #ifdef DIAGNOSTIC
48768122621Skiyohara 	/* info */
48868122621Skiyohara 	printf("boot: howto=%08x curproc=%p\n", howto, curproc);
48968122621Skiyohara #endif
49068122621Skiyohara 
49168122621Skiyohara 	/*
49268122621Skiyohara 	 * If we are still cold then hit the air brakes
49368122621Skiyohara 	 * and crash to earth fast
49468122621Skiyohara 	 */
49568122621Skiyohara 	if (cold) {
49668122621Skiyohara 		doshutdownhooks();
49768122621Skiyohara 		pmf_system_shutdown(boothowto);
49868122621Skiyohara 		printf("The operating system has halted.\n");
49968122621Skiyohara 		printf("Please press any key to reboot.\n\n");
50068122621Skiyohara 		cngetc();
50168122621Skiyohara 		printf("rebooting...\n");
50268122621Skiyohara 		cpu_reset();
50368122621Skiyohara 		/*NOTREACHED*/
50468122621Skiyohara 	}
50568122621Skiyohara 
50668122621Skiyohara 	/*
50768122621Skiyohara 	 * If RB_NOSYNC was not specified sync the discs.
50868122621Skiyohara 	 * Note: Unless cold is set to 1 here, syslogd will die during the
50968122621Skiyohara 	 * unmount.  It looks like syslogd is getting woken up only to find
51068122621Skiyohara 	 * that it cannot page part of the binary in as the filesystem has
51168122621Skiyohara 	 * been unmounted.
51268122621Skiyohara 	 */
51368122621Skiyohara 	if (!(howto & RB_NOSYNC))
51468122621Skiyohara 		bootsync();
51568122621Skiyohara 
51668122621Skiyohara 	/* Say NO to interrupts */
51768122621Skiyohara 	splhigh();
51868122621Skiyohara 
51968122621Skiyohara 	/* Do a dump if requested. */
52068122621Skiyohara 	if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP)
52168122621Skiyohara 		dumpsys();
52268122621Skiyohara 
52368122621Skiyohara 	/* Run any shutdown hooks */
52468122621Skiyohara 	doshutdownhooks();
52568122621Skiyohara 
52668122621Skiyohara 	pmf_system_shutdown(boothowto);
52768122621Skiyohara 
52868122621Skiyohara 	/* Make sure IRQ's are disabled */
52968122621Skiyohara 	IRQdisable;
53068122621Skiyohara 
53168122621Skiyohara 	if (howto & RB_HALT) {
53268122621Skiyohara 		printf("The operating system has halted.\n");
53368122621Skiyohara 		printf("Please press any key to reboot.\n\n");
53468122621Skiyohara 		cngetc();
53568122621Skiyohara 	}
53668122621Skiyohara 
53768122621Skiyohara 	printf("rebooting...\n");
53868122621Skiyohara 	cpu_reset();
53968122621Skiyohara 	/*NOTREACHED*/
54068122621Skiyohara }
54168122621Skiyohara 
54268122621Skiyohara void
consinit(void)54368122621Skiyohara consinit(void)
54468122621Skiyohara {
54568122621Skiyohara 	static int consinit_called = 0;
54668122621Skiyohara #if (NWMCOM + NCLPSCOM) > 0
54768122621Skiyohara 	const tcflag_t mode = (TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8;
54868122621Skiyohara #endif
54968122621Skiyohara 
55068122621Skiyohara 	if (consinit_called)
55168122621Skiyohara 		return;
55268122621Skiyohara 	consinit_called = 1;
55368122621Skiyohara 
55468122621Skiyohara 	if (strcmp(epoc32_model, "SERIES5 R1") == 0) {
55568122621Skiyohara #if NCLPSLCD > 0
55668122621Skiyohara 		if (clpslcd_cnattach() == 0) {
55768122621Skiyohara #if NEPOCKBD > 0
55868122621Skiyohara 			epockbd_cnattach();
55968122621Skiyohara #endif
56068122621Skiyohara 			return;
56168122621Skiyohara 		}
56268122621Skiyohara #endif
56368122621Skiyohara #if NCLPSCOM > 0
56468122621Skiyohara 		if (clpscom_cnattach(ARM7XX_INTRREG_VBASE, 115200, mode) == 0)
56568122621Skiyohara 			return;
56668122621Skiyohara #endif
56768122621Skiyohara 	}
56868122621Skiyohara 	if (strcmp(epoc32_model, "SERIES5mx") == 0) {
56968122621Skiyohara 		vaddr_t vbase = ARM7XX_INTRREG_VBASE;
57068122621Skiyohara #if NWMCOM > 0
57168122621Skiyohara 		vaddr_t offset;
57268122621Skiyohara 		volatile uint8_t *gpio;
57368122621Skiyohara 		int irda;
57468122621Skiyohara #endif
57568122621Skiyohara 
57668122621Skiyohara #if NWMLCD > 0
57768122621Skiyohara 		if (wmlcd_cnattach() == 0) {
57868122621Skiyohara #if NEPOCKBD > 0
57968122621Skiyohara 			epockbd_cnattach();
58068122621Skiyohara #endif
58168122621Skiyohara 			return;
58268122621Skiyohara 		}
58368122621Skiyohara #endif
58468122621Skiyohara #if NWMCOM > 0
58568122621Skiyohara 		gpio = (uint8_t *)ARM7XX_INTRREG_VBASE + WINDERMERE_GPIO_OFFSET;
58668122621Skiyohara 		if (0) {
58768122621Skiyohara 			/* Enable UART0 to PCDR */
58868122621Skiyohara 			*(gpio + 0x08) |= 1 << 5;
58968122621Skiyohara 			offset = WINDERMERE_COM0_OFFSET;
59068122621Skiyohara 			irda = 1;			/* IrDA */
59168122621Skiyohara 		} else {
59268122621Skiyohara 			/* Enable UART1 to PCDR */
59368122621Skiyohara 			*(gpio + 0x08) |= 1 << 3;
59468122621Skiyohara 			offset = WINDERMERE_COM1_OFFSET;
59568122621Skiyohara 			irda = 0;			/* UART */
59668122621Skiyohara 		}
59768122621Skiyohara 
59868122621Skiyohara 		if (wmcom_cnattach(vbase + offset, 115200, mode, irda) == 0)
59968122621Skiyohara 			return;
60068122621Skiyohara #endif
60168122621Skiyohara 	}
60268122621Skiyohara 	if (strcmp(epoc32_model, "SERIES7") == 0) {
60368122621Skiyohara 	}
60468122621Skiyohara 	panic("can't init console");
60568122621Skiyohara }
606