[apple/xnu.git] / osfmk / ppc / ppc_vm_init.c

/*
 * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * @OSF_COPYRIGHT@
 */
/*
 * @APPLE_FREE_COPYRIGHT@
 */

#include <mach_debug.h>
#include <mach_kdb.h>
#include <mach_kdp.h>
#include <debug.h>
#include <cpus.h>

#include <mach/vm_types.h>
#include <mach/vm_param.h>
#include <mach/thread_status.h>
#include <kern/misc_protos.h>
#include <kern/assert.h>
#include <kern/cpu_number.h>

#include <ppc/proc_reg.h>
#include <ppc/Firmware.h>
#include <ppc/boot.h>
#include <ppc/misc_protos.h>
#include <ppc/pmap.h>
#include <ppc/mem.h>
#include <ppc/mappings.h>
#include <ppc/exception.h>
#include <ppc/mp.h>
#include <ppc/lowglobals.h>

#include <mach-o/mach_header.h>

extern const char version[];
extern const char version_variant[];

extern unsigned int intstack[];			/* declared in aligned_data.s */
extern unsigned int intstack_top_ss;	/* declared in aligned_data.s */

addr64_t hash_table_base;				/* Hash table base */
unsigned int hash_table_size;			/* Hash table size */
vm_offset_t taproot_addr;				/* (BRINGUP) */
unsigned int taproot_size;				/* (BRINGUP) */
unsigned int serialmode;				/* Serial mode keyboard and console control */
extern int disableConsoleOutput;

struct shadowBAT shadow_BAT;

/*
 *	NOTE: mem_size is bogus on large memory machines.  We will pin it to 0x80000000 if there is more than 2 GB
 *	This is left only for compatibility and max_mem should be used.
 */
vm_offset_t mem_size;					/* Size of actual physical memory present
										   minus any performance buffer and possibly limited
										   by mem_limit in bytes */
uint64_t	mem_actual;					/* The "One True" physical memory size 
						  				   actually, it's the highest physical address + 1 */
uint64_t	max_mem;					/* Size of physical memory (bytes), adjusted by maxmem */
uint64_t	sane_size;					/* Memory size to use for defaults calculations */
						  

mem_region_t pmap_mem_regions[PMAP_MEM_REGION_MAX + 1];
int	 pmap_mem_regions_count = 0;		/* Assume no non-contiguous memory regions */

unsigned int avail_remaining = 0;
vm_offset_t first_avail;
vm_offset_t static_memory_end;
addr64_t vm_last_addr = VM_MAX_KERNEL_ADDRESS;	/* Highest kernel virtual address known to the VM system */

extern struct mach_header _mh_execute_header;
vm_offset_t sectTEXTB;
int sectSizeTEXT;
vm_offset_t sectDATAB;
int sectSizeDATA;
vm_offset_t sectLINKB;
int sectSizeLINK;
vm_offset_t sectKLDB;
int sectSizeKLD;
vm_offset_t sectPRELINKB;
int sectSizePRELINK;

vm_offset_t end, etext, edata;

extern unsigned long exception_entry;
extern unsigned long exception_end;


void ppc_vm_init(uint64_t mem_limit, boot_args *args)
{
	unsigned int htabmask;
	unsigned int i, j, batsize, kmapsize, pvr;
	vm_offset_t  addr, ioAddr, videoAddr;
	int boot_task_end_offset;
	const char *cpus;
	mapping		*mp;
	vm_offset_t		sizeadj, oldstart;
	unsigned int *xtaproot, bank_shift;
	uint64_t	cbsize, xhid0;


/*
 *	Invalidate all shadow BATs
 */

	/* Initialize shadow IBATs */
	shadow_BAT.IBATs[0].upper=BAT_INVALID;
	shadow_BAT.IBATs[0].lower=BAT_INVALID;
	shadow_BAT.IBATs[1].upper=BAT_INVALID;
	shadow_BAT.IBATs[1].lower=BAT_INVALID;
	shadow_BAT.IBATs[2].upper=BAT_INVALID;
	shadow_BAT.IBATs[2].lower=BAT_INVALID;
	shadow_BAT.IBATs[3].upper=BAT_INVALID;
	shadow_BAT.IBATs[3].lower=BAT_INVALID;

	/* Initialize shadow DBATs */
	shadow_BAT.DBATs[0].upper=BAT_INVALID;
	shadow_BAT.DBATs[0].lower=BAT_INVALID;
	shadow_BAT.DBATs[1].upper=BAT_INVALID;
	shadow_BAT.DBATs[1].lower=BAT_INVALID;
	shadow_BAT.DBATs[2].upper=BAT_INVALID;
	shadow_BAT.DBATs[2].lower=BAT_INVALID;
	shadow_BAT.DBATs[3].upper=BAT_INVALID;
	shadow_BAT.DBATs[3].lower=BAT_INVALID;


	/*
	 * Go through the list of memory regions passed in via the boot_args
	 * and copy valid entries into the pmap_mem_regions table, adding
	 * further calculated entries.
	 *
	 * boot_args version 1 has address instead of page numbers
	 * in the PhysicalDRAM banks, set bank_shift accordingly.
	 */
	
	bank_shift = 0;
	if (args->Version == kBootArgsVersion1) bank_shift = 12;
	
	pmap_mem_regions_count = 0;
	max_mem = 0;   															/* Will use to total memory found so far */
	mem_actual = 0;															/* Actual size of memory */
	
	if (mem_limit == 0) mem_limit = 0xFFFFFFFFFFFFFFFFULL;					/* If there is no set limit, use all */
	
	for (i = 0; i < kMaxDRAMBanks; i++) {									/* Look at all of the banks */
		
		cbsize = (uint64_t)args->PhysicalDRAM[i].size << (12 - bank_shift);	/* Remember current size */
		
		if (!cbsize) continue;												/* Skip if the bank is empty */
		
		mem_actual = mem_actual + cbsize;									/* Get true memory size */

		if(mem_limit == 0) continue;										/* If we hit restriction, just keep counting */

		if (cbsize > mem_limit) cbsize = mem_limit;							/* Trim to max allowed */
		max_mem += cbsize;													/* Total up what we have so far */
		mem_limit = mem_limit - cbsize;										/* Calculate amount left to do */
		
		pmap_mem_regions[pmap_mem_regions_count].mrStart  = args->PhysicalDRAM[i].base >> bank_shift;	/* Set the start of the bank */
		pmap_mem_regions[pmap_mem_regions_count].mrAStart = pmap_mem_regions[pmap_mem_regions_count].mrStart;		/* Set the start of allocatable area */
		pmap_mem_regions[pmap_mem_regions_count].mrEnd    = ((uint64_t)args->PhysicalDRAM[i].base >> bank_shift) + (cbsize >> 12) - 1;	/* Set the end address of bank */
		pmap_mem_regions[pmap_mem_regions_count].mrAEnd   = pmap_mem_regions[pmap_mem_regions_count].mrEnd;	/* Set the end address of allocatable area */

		/* Regions must be provided in ascending order */
		assert ((pmap_mem_regions_count == 0) ||
			pmap_mem_regions[pmap_mem_regions_count].mrStart >
			pmap_mem_regions[pmap_mem_regions_count-1].mrStart);

		pmap_mem_regions_count++;											/* Count this region */
	}
	
	mem_size = (unsigned int)max_mem;										/* Get size of memory */
	if(max_mem > 0x0000000080000000ULL) mem_size = 0x80000000;				/* Pin at 2 GB */

	sane_size = max_mem;													/* Calculate a sane value to use for init */
	if(sane_size > (addr64_t)(VM_MAX_KERNEL_ADDRESS + 1)) 
		sane_size = (addr64_t)(VM_MAX_KERNEL_ADDRESS + 1);					/* If flush with ram, use addressible portion */


/* 
 * Initialize the pmap system, using space above `first_avail'
 * for the necessary data structures.
 * NOTE : assume that we'll have enough space mapped in already
 */

	first_avail = static_memory_end;

/* Now retrieve addresses for end, edata, and etext 
 * from MACH-O headers.
 */
	sectTEXTB = (vm_offset_t)getsegdatafromheader(
		&_mh_execute_header, "__TEXT", &sectSizeTEXT);
	sectDATAB = (vm_offset_t)getsegdatafromheader(
		&_mh_execute_header, "__DATA", &sectSizeDATA);
	sectLINKB = (vm_offset_t)getsegdatafromheader(
		&_mh_execute_header, "__LINKEDIT", &sectSizeLINK);
	sectKLDB = (vm_offset_t)getsegdatafromheader(
		&_mh_execute_header, "__KLD", &sectSizeKLD);
	sectPRELINKB = (vm_offset_t)getsegdatafromheader(
		&_mh_execute_header, "__PRELINK", &sectSizePRELINK);

	etext = (vm_offset_t) sectTEXTB + sectSizeTEXT;
	edata = (vm_offset_t) sectDATAB + sectSizeDATA;
	end = round_page_32(getlastaddr());					/* Force end to next page */
	
	kmapsize = (round_page_32(exception_end) - trunc_page_32(exception_entry)) +	/* Get size we will map later */
		(round_page_32(sectTEXTB+sectSizeTEXT) - trunc_page_32(sectTEXTB)) +
		(round_page_32(sectDATAB+sectSizeDATA) - trunc_page_32(sectDATAB)) +
		(round_page_32(sectLINKB+sectSizeLINK) - trunc_page_32(sectLINKB)) +
		(round_page_32(sectKLDB+sectSizeKLD) - trunc_page_32(sectKLDB)) +
		(round_page_32(sectPRELINKB+sectSizePRELINK) - trunc_page_32(sectPRELINKB)) +
		(round_page_32(static_memory_end) - trunc_page_32(end));

	pmap_bootstrap(max_mem, &first_avail, kmapsize);

	pmap_map(trunc_page_32(exception_entry), trunc_page_32(exception_entry), 
		round_page_32(exception_end), VM_PROT_READ|VM_PROT_EXECUTE);

	pmap_map(trunc_page_32(sectTEXTB), trunc_page_32(sectTEXTB), 
		round_page_32(sectTEXTB+sectSizeTEXT), VM_PROT_READ|VM_PROT_EXECUTE);

	pmap_map(trunc_page_32(sectDATAB), trunc_page_32(sectDATAB), 
		round_page_32(sectDATAB+sectSizeDATA), VM_PROT_READ|VM_PROT_WRITE);

/* The KLD and LINKEDIT segments are unloaded in toto after boot completes,
* but via ml_static_mfree(), through IODTFreeLoaderInfo(). Hence, we have
* to map both segments page-by-page.
*/
	
	for (addr = trunc_page_32(sectPRELINKB);
             addr < round_page_32(sectPRELINKB+sectSizePRELINK);
             addr += PAGE_SIZE) {

            pmap_enter(kernel_pmap, addr, addr>>12, 
			VM_PROT_READ|VM_PROT_WRITE, 
			VM_WIMG_USE_DEFAULT, TRUE);

	}

	for (addr = trunc_page_32(sectKLDB);
             addr < round_page_32(sectKLDB+sectSizeKLD);
             addr += PAGE_SIZE) {

            pmap_enter(kernel_pmap, addr, addr>>12, 
			VM_PROT_READ|VM_PROT_WRITE, 
			VM_WIMG_USE_DEFAULT, TRUE);

	}

	for (addr = trunc_page_32(sectLINKB);
             addr < round_page_32(sectLINKB+sectSizeLINK);
             addr += PAGE_SIZE) {

           pmap_enter(kernel_pmap, addr, addr>>12, 
			VM_PROT_READ|VM_PROT_WRITE, 
			VM_WIMG_USE_DEFAULT, TRUE);

	}

	pmap_enter(kernel_pmap, &sharedPage, (unsigned int)&sharedPage >> 12,	/* Make sure the sharedPage is mapped */
		VM_PROT_READ|VM_PROT_WRITE, 
		VM_WIMG_USE_DEFAULT, TRUE);

	pmap_enter(kernel_pmap, &lowGlo, (unsigned int)&lowGlo >> 12,			/* Make sure the low memory globals are mapped */
		VM_PROT_READ|VM_PROT_WRITE, 
		VM_WIMG_USE_DEFAULT, TRUE);
		
/*
 *	We need to map the remainder page-by-page because some of this will
 *	be released later, but not all.  Ergo, no block mapping here 
 */

	for(addr = trunc_page_32(end); addr < round_page_32(static_memory_end); addr += PAGE_SIZE) {

		pmap_enter(kernel_pmap, addr, addr>>12, 
			VM_PROT_READ|VM_PROT_WRITE, 
			VM_WIMG_USE_DEFAULT, TRUE);

	}

	MapUserAddressSpaceInit();			/* Go initialize copy in/out */

/*
 *	At this point, there is enough mapped memory and all hw mapping structures are
 *	allocated and initialized.  Here is where we turn on translation for the
 *	VERY first time....
 *
 *	NOTE: Here is where our very first interruption will happen.
 *
 */

	hw_start_trans();					/* Start translating */

#if 0
	GratefulDebInit((bootBumbleC *)&(args->Video));	/* Initialize the GratefulDeb debugger */
#endif


	printf_init();						/* Init this in case we need debugger */
	panic_init();						/* Init this in case we need debugger */
	PE_init_kprintf(TRUE);				/* Note on PPC we only call this after VM is set up */

	kprintf("kprintf initialized\n");

	serialmode = 0;						/* Assume normal keyboard and console */
	if(PE_parse_boot_arg("serial", &serialmode)) {		/* Do we want a serial keyboard and/or console? */
		kprintf("Serial mode specified: %08X\n", serialmode);
	}
	if(serialmode & 1) {				/* Start serial if requested */
		(void)switch_to_serial_console();	/* Switch into serial mode */
		disableConsoleOutput = FALSE;	/* Allow printfs to happen */
	}
	
	kprintf("max_mem: %ld M\n", (unsigned long)(max_mem >> 20));
	kprintf("version_variant = %s\n", version_variant);
	kprintf("version         = %s\n\n", version);
	__asm__ ("mfpvr %0" : "=r" (pvr));
	kprintf("proc version    = %08x\n", pvr);
	if(per_proc_info[0].pf.Available & pf64Bit) {	/* 64-bit processor? */
		xhid0 = hid0get64();			/* Get the hid0 */
		if(xhid0 & (1ULL << (63 - 19))) kprintf("Time base is externally clocked\n");
		else kprintf("Time base is internally clocked\n");
	}


	taproot_size = PE_init_taproot(&taproot_addr);	/* (BRINGUP) See if there is a taproot */
	if(taproot_size) {					/* (BRINGUP) */
		kprintf("TapRoot card configured to use vaddr = %08X, size = %08X\n", taproot_addr, taproot_size);
		bcopy_nc((void *)version, (void *)(taproot_addr + 16), strlen(version));	/* (BRINGUP) Pass it our kernel version */
		__asm__ volatile("eieio");		/* (BRINGUP) */
		xtaproot = (unsigned int *)taproot_addr;	/* (BRINGUP) */
		xtaproot[0] = 1;				/* (BRINGUP) */
		__asm__ volatile("eieio");		/* (BRINGUP) */
	}

	PE_create_console();				/* create the console for verbose or pretty mode */

	/* setup console output */
	PE_init_printf(FALSE);

#if DEBUG
	printf("\n\n\nThis program was compiled using gcc %d.%d for powerpc\n",
	       __GNUC__,__GNUC_MINOR__);


	/* Processor version information */
	{       
		unsigned int pvr;
		__asm__ ("mfpvr %0" : "=r" (pvr));
		printf("processor version register : %08X\n", pvr);
	}

	kprintf("Args at %08X\n", args);
	for (i = 0; i < pmap_mem_regions_count; i++) {
			printf("DRAM at %08X size %08X\n",
			       args->PhysicalDRAM[i].base,
			       args->PhysicalDRAM[i].size);
	}
#endif /* DEBUG */

#if DEBUG
	kprintf("Mapped memory:\n");
	kprintf("   exception vector: %08X, %08X - %08X\n", trunc_page_32(exception_entry), 
		trunc_page_32(exception_entry), round_page_32(exception_end));
	kprintf("          sectTEXTB: %08X, %08X - %08X\n", trunc_page_32(sectTEXTB), 
		trunc_page_32(sectTEXTB), round_page_32(sectTEXTB+sectSizeTEXT));
	kprintf("          sectDATAB: %08X, %08X - %08X\n", trunc_page_32(sectDATAB), 
		trunc_page_32(sectDATAB), round_page_32(sectDATAB+sectSizeDATA));
	kprintf("          sectLINKB: %08X, %08X - %08X\n", trunc_page_32(sectLINKB), 
		trunc_page_32(sectLINKB), round_page_32(sectLINKB+sectSizeLINK));
	kprintf("           sectKLDB: %08X, %08X - %08X\n", trunc_page_32(sectKLDB), 
		trunc_page_32(sectKLDB), round_page_32(sectKLDB+sectSizeKLD));
	kprintf("                end: %08X, %08X - %08X\n", trunc_page_32(end), 
		trunc_page_32(end), static_memory_end);

#endif

	return;
}

void ppc_vm_cpu_init(
	struct per_proc_info *proc_info)
{
	hw_setup_trans();									/* Set up hardware needed for translation */
	hw_start_trans();									/* Start translating */
}
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
e5568f75 A	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
1c79356b	11	*
e5568f75 A	12	* This Original Code and all software distributed under the License are
e5568f75 A	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
e5568f75 A	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
1c79356b A	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/*
	23	* @OSF_COPYRIGHT@
	24	*/
	25	/*
	26	* @APPLE_FREE_COPYRIGHT@
	27	*/
	28
	29	#include <mach_debug.h>
	30	#include <mach_kdb.h>
	31	#include <mach_kdp.h>
	32	#include <debug.h>
	33	#include <cpus.h>
	34
	35	#include <mach/vm_types.h>
	36	#include <mach/vm_param.h>
	37	#include <mach/thread_status.h>
	38	#include <kern/misc_protos.h>
	39	#include <kern/assert.h>
	40	#include <kern/cpu_number.h>
	41
	42	#include <ppc/proc_reg.h>
	43	#include <ppc/Firmware.h>
	44	#include <ppc/boot.h>
	45	#include <ppc/misc_protos.h>
	46	#include <ppc/pmap.h>
1c79356b A	47	#include <ppc/mem.h>
	48	#include <ppc/mappings.h>
	49	#include <ppc/exception.h>
	50	#include <ppc/mp.h>
55e303ae	51	#include <ppc/lowglobals.h>
1c79356b	52
1c79356b	53	#include <mach-o/mach_header.h>
1c79356b	54
55e303ae A	55	extern const char version[];
55e303ae A	56	extern const char version_variant[];
1c79356b	57
55e303ae A	58	extern unsigned int intstack[]; /* declared in aligned_data.s */
55e303ae A	59	extern unsigned int intstack_top_ss; /* declared in aligned_data.s */
1c79356b	60
55e303ae A	61	addr64_t hash_table_base; /* Hash table base */
	62	unsigned int hash_table_size; /* Hash table size */
	63	vm_offset_t taproot_addr; /* (BRINGUP) */
	64	unsigned int taproot_size; /* (BRINGUP) */
	65	unsigned int serialmode; /* Serial mode keyboard and console control */
	66	extern int disableConsoleOutput;
1c79356b	67
55e303ae	68	struct shadowBAT shadow_BAT;
d7e50217	69
55e303ae A	70	/*
	71	* NOTE: mem_size is bogus on large memory machines. We will pin it to 0x80000000 if there is more than 2 GB
	72	* This is left only for compatibility and max_mem should be used.
	73	*/
	74	vm_offset_t mem_size; /* Size of actual physical memory present
	75	minus any performance buffer and possibly limited
	76	by mem_limit in bytes */
	77	uint64_t mem_actual; /* The "One True" physical memory size
	78	actually, it's the highest physical address + 1 */
	79	uint64_t max_mem; /* Size of physical memory (bytes), adjusted by maxmem */
	80	uint64_t sane_size; /* Memory size to use for defaults calculations */
	81
	82
	83	mem_region_t pmap_mem_regions[PMAP_MEM_REGION_MAX + 1];
	84	int pmap_mem_regions_count = 0; /* Assume no non-contiguous memory regions */
1c79356b A	85
	86	unsigned int avail_remaining = 0;
	87	vm_offset_t first_avail;
	88	vm_offset_t static_memory_end;
55e303ae	89	addr64_t vm_last_addr = VM_MAX_KERNEL_ADDRESS; /* Highest kernel virtual address known to the VM system */
1c79356b	90
1c79356b A	91	extern struct mach_header _mh_execute_header;
	92	vm_offset_t sectTEXTB;
	93	int sectSizeTEXT;
	94	vm_offset_t sectDATAB;
	95	int sectSizeDATA;
1c79356b A	96	vm_offset_t sectLINKB;
	97	int sectSizeLINK;
	98	vm_offset_t sectKLDB;
	99	int sectSizeKLD;
55e303ae A	100	vm_offset_t sectPRELINKB;
55e303ae A	101	int sectSizePRELINK;
1c79356b A	102
1c79356b A	103	vm_offset_t end, etext, edata;
1c79356b A	104
	105	extern unsigned long exception_entry;
	106	extern unsigned long exception_end;
	107
	108
55e303ae	109	void ppc_vm_init(uint64_t mem_limit, boot_args *args)
1c79356b A	110	{
1c79356b A	111	unsigned int htabmask;
55e303ae A	112	unsigned int i, j, batsize, kmapsize, pvr;
55e303ae A	113	vm_offset_t addr, ioAddr, videoAddr;
1c79356b A	114	int boot_task_end_offset;
	115	const char *cpus;
	116	mapping *mp;
1c79356b	117	vm_offset_t sizeadj, oldstart;
55e303ae A	118	unsigned int *xtaproot, bank_shift;
55e303ae A	119	uint64_t cbsize, xhid0;
1c79356b	120
de355530	121
55e303ae A	122	/*
55e303ae A	123	* Invalidate all shadow BATs
1c79356b	124	*/
1c79356b	125
55e303ae A	126	/* Initialize shadow IBATs */
	127	shadow_BAT.IBATs[0].upper=BAT_INVALID;
	128	shadow_BAT.IBATs[0].lower=BAT_INVALID;
	129	shadow_BAT.IBATs[1].upper=BAT_INVALID;
	130	shadow_BAT.IBATs[1].lower=BAT_INVALID;
	131	shadow_BAT.IBATs[2].upper=BAT_INVALID;
	132	shadow_BAT.IBATs[2].lower=BAT_INVALID;
	133	shadow_BAT.IBATs[3].upper=BAT_INVALID;
	134	shadow_BAT.IBATs[3].lower=BAT_INVALID;
	135
	136	/* Initialize shadow DBATs */
	137	shadow_BAT.DBATs[0].upper=BAT_INVALID;
	138	shadow_BAT.DBATs[0].lower=BAT_INVALID;
	139	shadow_BAT.DBATs[1].upper=BAT_INVALID;
	140	shadow_BAT.DBATs[1].lower=BAT_INVALID;
	141	shadow_BAT.DBATs[2].upper=BAT_INVALID;
	142	shadow_BAT.DBATs[2].lower=BAT_INVALID;
	143	shadow_BAT.DBATs[3].upper=BAT_INVALID;
	144	shadow_BAT.DBATs[3].lower=BAT_INVALID;
	145
	146
	147	/*
	148	* Go through the list of memory regions passed in via the boot_args
1c79356b A	149	* and copy valid entries into the pmap_mem_regions table, adding
1c79356b A	150	* further calculated entries.
55e303ae A	151	*
	152	* boot_args version 1 has address instead of page numbers
	153	* in the PhysicalDRAM banks, set bank_shift accordingly.
1c79356b A	154	*/
1c79356b A	155
55e303ae A	156	bank_shift = 0;
	157	if (args->Version == kBootArgsVersion1) bank_shift = 12;
	158
1c79356b	159	pmap_mem_regions_count = 0;
55e303ae A	160	max_mem = 0; /* Will use to total memory found so far */
	161	mem_actual = 0; /* Actual size of memory */
	162
	163	if (mem_limit == 0) mem_limit = 0xFFFFFFFFFFFFFFFFULL; /* If there is no set limit, use all */
	164
	165	for (i = 0; i < kMaxDRAMBanks; i++) { /* Look at all of the banks */
	166
	167	cbsize = (uint64_t)args->PhysicalDRAM[i].size << (12 - bank_shift); /* Remember current size */
	168
	169	if (!cbsize) continue; /* Skip if the bank is empty */
	170
	171	mem_actual = mem_actual + cbsize; /* Get true memory size */
1c79356b	172
55e303ae	173	if(mem_limit == 0) continue; /* If we hit restriction, just keep counting */
1c79356b	174
55e303ae A	175	if (cbsize > mem_limit) cbsize = mem_limit; /* Trim to max allowed */
	176	max_mem += cbsize; /* Total up what we have so far */
	177	mem_limit = mem_limit - cbsize; /* Calculate amount left to do */
	178
	179	pmap_mem_regions[pmap_mem_regions_count].mrStart = args->PhysicalDRAM[i].base >> bank_shift; /* Set the start of the bank */
	180	pmap_mem_regions[pmap_mem_regions_count].mrAStart = pmap_mem_regions[pmap_mem_regions_count].mrStart; /* Set the start of allocatable area */
	181	pmap_mem_regions[pmap_mem_regions_count].mrEnd = ((uint64_t)args->PhysicalDRAM[i].base >> bank_shift) + (cbsize >> 12) - 1; /* Set the end address of bank */
	182	pmap_mem_regions[pmap_mem_regions_count].mrAEnd = pmap_mem_regions[pmap_mem_regions_count].mrEnd; /* Set the end address of allocatable area */
1c79356b	183
de355530 A	184	/* Regions must be provided in ascending order */
de355530 A	185	assert ((pmap_mem_regions_count == 0) \|\|
55e303ae A	186	pmap_mem_regions[pmap_mem_regions_count].mrStart >
55e303ae A	187	pmap_mem_regions[pmap_mem_regions_count-1].mrStart);
1c79356b	188
55e303ae	189	pmap_mem_regions_count++; /* Count this region */
de355530	190	}
55e303ae A	191
	192	mem_size = (unsigned int)max_mem; /* Get size of memory */
	193	if(max_mem > 0x0000000080000000ULL) mem_size = 0x80000000; /* Pin at 2 GB */
d7e50217	194
55e303ae A	195	sane_size = max_mem; /* Calculate a sane value to use for init */
	196	if(sane_size > (addr64_t)(VM_MAX_KERNEL_ADDRESS + 1))
	197	sane_size = (addr64_t)(VM_MAX_KERNEL_ADDRESS + 1); /* If flush with ram, use addressible portion */
43866e37	198
d7e50217	199
55e303ae A	200	/*
	201	* Initialize the pmap system, using space above `first_avail'
	202	* for the necessary data structures.
	203	* NOTE : assume that we'll have enough space mapped in already
	204	*/
	205
	206	first_avail = static_memory_end;
d7e50217	207
55e303ae A	208	/* Now retrieve addresses for end, edata, and etext
	209	* from MACH-O headers.
	210	*/
	211	sectTEXTB = (vm_offset_t)getsegdatafromheader(
	212	&_mh_execute_header, "__TEXT", &sectSizeTEXT);
	213	sectDATAB = (vm_offset_t)getsegdatafromheader(
	214	&_mh_execute_header, "__DATA", &sectSizeDATA);
	215	sectLINKB = (vm_offset_t)getsegdatafromheader(
	216	&_mh_execute_header, "__LINKEDIT", &sectSizeLINK);
	217	sectKLDB = (vm_offset_t)getsegdatafromheader(
	218	&_mh_execute_header, "__KLD", &sectSizeKLD);
	219	sectPRELINKB = (vm_offset_t)getsegdatafromheader(
	220	&_mh_execute_header, "__PRELINK", &sectSizePRELINK);
	221
	222	etext = (vm_offset_t) sectTEXTB + sectSizeTEXT;
	223	edata = (vm_offset_t) sectDATAB + sectSizeDATA;
	224	end = round_page_32(getlastaddr()); /* Force end to next page */
1c79356b	225
55e303ae A	226	kmapsize = (round_page_32(exception_end) - trunc_page_32(exception_entry)) + /* Get size we will map later */
	227	(round_page_32(sectTEXTB+sectSizeTEXT) - trunc_page_32(sectTEXTB)) +
	228	(round_page_32(sectDATAB+sectSizeDATA) - trunc_page_32(sectDATAB)) +
	229	(round_page_32(sectLINKB+sectSizeLINK) - trunc_page_32(sectLINKB)) +
	230	(round_page_32(sectKLDB+sectSizeKLD) - trunc_page_32(sectKLDB)) +
	231	(round_page_32(sectPRELINKB+sectSizePRELINK) - trunc_page_32(sectPRELINKB)) +
	232	(round_page_32(static_memory_end) - trunc_page_32(end));
d7e50217	233
55e303ae	234	pmap_bootstrap(max_mem, &first_avail, kmapsize);
d7e50217	235
55e303ae A	236	pmap_map(trunc_page_32(exception_entry), trunc_page_32(exception_entry),
	237	round_page_32(exception_end), VM_PROT_READ\|VM_PROT_EXECUTE);
	238
	239	pmap_map(trunc_page_32(sectTEXTB), trunc_page_32(sectTEXTB),
	240	round_page_32(sectTEXTB+sectSizeTEXT), VM_PROT_READ\|VM_PROT_EXECUTE);
	241
	242	pmap_map(trunc_page_32(sectDATAB), trunc_page_32(sectDATAB),
	243	round_page_32(sectDATAB+sectSizeDATA), VM_PROT_READ\|VM_PROT_WRITE);
	244
	245	/* The KLD and LINKEDIT segments are unloaded in toto after boot completes,
	246	* but via ml_static_mfree(), through IODTFreeLoaderInfo(). Hence, we have
	247	* to map both segments page-by-page.
	248	*/
	249
	250	for (addr = trunc_page_32(sectPRELINKB);
	251	addr < round_page_32(sectPRELINKB+sectSizePRELINK);
1c79356b A	252	addr += PAGE_SIZE) {
1c79356b A	253
55e303ae	254	pmap_enter(kernel_pmap, addr, addr>>12,
9bccf70c A	255	VM_PROT_READ\|VM_PROT_WRITE,
9bccf70c A	256	VM_WIMG_USE_DEFAULT, TRUE);
55e303ae	257
1c79356b A	258	}
1c79356b A	259
55e303ae A	260	for (addr = trunc_page_32(sectKLDB);
55e303ae A	261	addr < round_page_32(sectKLDB+sectSizeKLD);
1c79356b A	262	addr += PAGE_SIZE) {
1c79356b A	263
55e303ae	264	pmap_enter(kernel_pmap, addr, addr>>12,
9bccf70c A	265	VM_PROT_READ\|VM_PROT_WRITE,
9bccf70c A	266	VM_WIMG_USE_DEFAULT, TRUE);
55e303ae	267
1c79356b A	268	}
1c79356b A	269
55e303ae A	270	for (addr = trunc_page_32(sectLINKB);
	271	addr < round_page_32(sectLINKB+sectSizeLINK);
	272	addr += PAGE_SIZE) {
	273
	274	pmap_enter(kernel_pmap, addr, addr>>12,
	275	VM_PROT_READ\|VM_PROT_WRITE,
	276	VM_WIMG_USE_DEFAULT, TRUE);
	277
	278	}
	279
	280	pmap_enter(kernel_pmap, &sharedPage, (unsigned int)&sharedPage >> 12, /* Make sure the sharedPage is mapped */
	281	VM_PROT_READ\|VM_PROT_WRITE,
	282	VM_WIMG_USE_DEFAULT, TRUE);
	283
	284	pmap_enter(kernel_pmap, &lowGlo, (unsigned int)&lowGlo >> 12, /* Make sure the low memory globals are mapped */
	285	VM_PROT_READ\|VM_PROT_WRITE,
	286	VM_WIMG_USE_DEFAULT, TRUE);
	287
1c79356b A	288	/*
	289	* We need to map the remainder page-by-page because some of this will
	290	* be released later, but not all. Ergo, no block mapping here
	291	*/
55e303ae A	292
	293	for(addr = trunc_page_32(end); addr < round_page_32(static_memory_end); addr += PAGE_SIZE) {
	294
	295	pmap_enter(kernel_pmap, addr, addr>>12,
9bccf70c A	296	VM_PROT_READ\|VM_PROT_WRITE,
9bccf70c A	297	VM_WIMG_USE_DEFAULT, TRUE);
d7e50217	298
de355530	299	}
55e303ae A	300
55e303ae A	301	MapUserAddressSpaceInit(); /* Go initialize copy in/out */
1c79356b	302
d52fe63f	303	/*
55e303ae A	304	* At this point, there is enough mapped memory and all hw mapping structures are
	305	* allocated and initialized. Here is where we turn on translation for the
	306	* VERY first time....
	307	*
	308	* NOTE: Here is where our very first interruption will happen.
	309	*
d52fe63f	310	*/
1c79356b	311
55e303ae A	312	hw_start_trans(); /* Start translating */
	313
	314	#if 0
	315	GratefulDebInit((bootBumbleC )&(args->Video)); / Initialize the GratefulDeb debugger */
	316	#endif
	317
	318
	319	printf_init(); /* Init this in case we need debugger */
	320	panic_init(); /* Init this in case we need debugger */
	321	PE_init_kprintf(TRUE); /* Note on PPC we only call this after VM is set up */
	322
	323	kprintf("kprintf initialized\n");
	324
	325	serialmode = 0; /* Assume normal keyboard and console */
	326	if(PE_parse_boot_arg("serial", &serialmode)) { /* Do we want a serial keyboard and/or console? */
	327	kprintf("Serial mode specified: %08X\n", serialmode);
	328	}
	329	if(serialmode & 1) { /* Start serial if requested */
	330	(void)switch_to_serial_console(); /* Switch into serial mode */
	331	disableConsoleOutput = FALSE; /* Allow printfs to happen */
	332	}
	333
	334	kprintf("max_mem: %ld M\n", (unsigned long)(max_mem >> 20));
	335	kprintf("version_variant = %s\n", version_variant);
	336	kprintf("version = %s\n\n", version);
	337	__asm__ ("mfpvr %0" : "=r" (pvr));
	338	kprintf("proc version = %08x\n", pvr);
	339	if(per_proc_info[0].pf.Available & pf64Bit) { /* 64-bit processor? */
	340	xhid0 = hid0get64(); /* Get the hid0 */
	341	if(xhid0 & (1ULL << (63 - 19))) kprintf("Time base is externally clocked\n");
	342	else kprintf("Time base is internally clocked\n");
	343	}
	344
	345
	346	taproot_size = PE_init_taproot(&taproot_addr); /* (BRINGUP) See if there is a taproot */
	347	if(taproot_size) { /* (BRINGUP) */
	348	kprintf("TapRoot card configured to use vaddr = %08X, size = %08X\n", taproot_addr, taproot_size);
	349	bcopy_nc((void )version, (void )(taproot_addr + 16), strlen(version)); /* (BRINGUP) Pass it our kernel version */
	350	__asm__ volatile("eieio"); /* (BRINGUP) */
	351	xtaproot = (unsigned int )taproot_addr; / (BRINGUP) */
	352	xtaproot[0] = 1; /* (BRINGUP) */
	353	__asm__ volatile("eieio"); /* (BRINGUP) */
	354	}
	355
	356	PE_create_console(); /* create the console for verbose or pretty mode */
1c79356b	357
55e303ae A	358	/* setup console output */
55e303ae A	359	PE_init_printf(FALSE);
1c79356b	360
1c79356b	361	#if DEBUG
55e303ae A	362	printf("\n\n\nThis program was compiled using gcc %d.%d for powerpc\n",
	363	__GNUC__,__GNUC_MINOR__);
	364
	365
	366	/* Processor version information */
	367	{
	368	unsigned int pvr;
	369	__asm__ ("mfpvr %0" : "=r" (pvr));
	370	printf("processor version register : %08X\n", pvr);
	371	}
	372
	373	kprintf("Args at %08X\n", args);
	374	for (i = 0; i < pmap_mem_regions_count; i++) {
	375	printf("DRAM at %08X size %08X\n",
	376	args->PhysicalDRAM[i].base,
	377	args->PhysicalDRAM[i].size);
	378	}
	379	#endif /* DEBUG */
	380
	381	#if DEBUG
	382	kprintf("Mapped memory:\n");
	383	kprintf(" exception vector: %08X, %08X - %08X\n", trunc_page_32(exception_entry),
	384	trunc_page_32(exception_entry), round_page_32(exception_end));
	385	kprintf(" sectTEXTB: %08X, %08X - %08X\n", trunc_page_32(sectTEXTB),
	386	trunc_page_32(sectTEXTB), round_page_32(sectTEXTB+sectSizeTEXT));
	387	kprintf(" sectDATAB: %08X, %08X - %08X\n", trunc_page_32(sectDATAB),
	388	trunc_page_32(sectDATAB), round_page_32(sectDATAB+sectSizeDATA));
	389	kprintf(" sectLINKB: %08X, %08X - %08X\n", trunc_page_32(sectLINKB),
	390	trunc_page_32(sectLINKB), round_page_32(sectLINKB+sectSizeLINK));
	391	kprintf(" sectKLDB: %08X, %08X - %08X\n", trunc_page_32(sectKLDB),
	392	trunc_page_32(sectKLDB), round_page_32(sectKLDB+sectSizeKLD));
	393	kprintf(" end: %08X, %08X - %08X\n", trunc_page_32(end),
	394	trunc_page_32(end), static_memory_end);
	395
1c79356b	396	#endif
55e303ae A	397
55e303ae A	398	return;
1c79356b A	399	}
	400
	401	void ppc_vm_cpu_init(
	402	struct per_proc_info *proc_info)
	403	{
55e303ae A	404	hw_setup_trans(); /* Set up hardware needed for translation */
55e303ae A	405	hw_start_trans(); /* Start translating */
1c79356b	406	}