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

/*
 * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code 
 * as defined in and that are subject to the Apple Public Source License 
 * Version 2.0 (the 'License'). You may not use this file except in 
 * compliance with the License.  The rights granted to you under the 
 * License may not be used to create, or enable the creation or 
 * redistribution of, unlawful or unlicensed copies of an Apple operating 
 * system, or to circumvent, violate, or enable the circumvention or 
 * violation of, any terms of an Apple operating system software license 
 * agreement.
 *
 * Please obtain a copy of the License at 
 * http://www.opensource.apple.com/apsl/ and read it before using this 
 * file.
 *
 * The 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, QUIET ENJOYMENT OR NON-INFRINGEMENT. 
 * Please see the License for the specific language governing rights and 
 * limitations under the License.
 *
 * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
 */
/*
 * @OSF_COPYRIGHT@
 */
/*
 * @APPLE_FREE_COPYRIGHT@
 */

#include <mach_debug.h>
#include <mach_kdb.h>
#include <mach_kdp.h>
#include <debug.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 <kern/thread.h>
#include <console/serial_protos.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/lowglobals.h>

#include <mach-o/mach_header.h>

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

addr64_t hash_table_base;				/* Hash table base */
unsigned int hash_table_size;			/* Hash table size */
int         hash_table_shift;           /* "ht_shift" boot arg, used to scale hash_table_size */
vm_offset_t taproot_addr;				/* (BRINGUP) */
unsigned int taproot_size;				/* (BRINGUP) */
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 sectHIBB;
int sectSizeHIB;

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 i, kmapsize, pvr;
	vm_offset_t  addr;
	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 for the currently running 32 bit kernel.
 */
	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);
	sectHIBB = (vm_offset_t)getsegdatafromheader(
		&_mh_execute_header, "__HIB", &sectSizeHIB);
	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(getlastaddr());					/* Force end to next page */
	
	kmapsize = (round_page(exception_end) - trunc_page(exception_entry)) +	/* Get size we will map later */
		(round_page(sectTEXTB+sectSizeTEXT) - trunc_page(sectTEXTB)) +
		(round_page(sectDATAB+sectSizeDATA) - trunc_page(sectDATAB)) +
		(round_page(sectLINKB+sectSizeLINK) - trunc_page(sectLINKB)) +
		(round_page(sectKLDB+sectSizeKLD) - trunc_page(sectKLDB)) +
		(round_page_32(sectKLDB+sectSizeHIB) - trunc_page_32(sectHIBB)) +
		(round_page(sectPRELINKB+sectSizePRELINK) - trunc_page(sectPRELINKB)) +
		(round_page(static_memory_end) - trunc_page(end));

	pmap_bootstrap(max_mem, &first_avail, kmapsize);

	pmap_map(trunc_page(exception_entry), trunc_page(exception_entry), 
		round_page(exception_end), VM_PROT_READ|VM_PROT_EXECUTE, VM_WIMG_USE_DEFAULT);

	pmap_map(trunc_page(sectTEXTB), trunc_page(sectTEXTB), 
		round_page(sectTEXTB+sectSizeTEXT), VM_PROT_READ|VM_PROT_EXECUTE, VM_WIMG_USE_DEFAULT);

	pmap_map(trunc_page(sectDATAB), trunc_page(sectDATAB), 
		round_page(sectDATAB+sectSizeDATA), VM_PROT_READ|VM_PROT_WRITE, VM_WIMG_USE_DEFAULT);

/* 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(sectPRELINKB);
             addr < round_page(sectPRELINKB+sectSizePRELINK);
             addr += PAGE_SIZE) {

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

	}

	for (addr = trunc_page(sectKLDB);
             addr < round_page(sectKLDB+sectSizeKLD);
             addr += PAGE_SIZE) {

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

	}

	for (addr = trunc_page(sectLINKB);
             addr < round_page(sectLINKB+sectSizeLINK);
             addr += PAGE_SIZE) {

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

	}

	for (addr = trunc_page_32(sectHIBB);
             addr < round_page_32(sectHIBB+sectSizeHIB);
             addr += PAGE_SIZE) {

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

	}

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

	pmap_enter(kernel_pmap, (vm_map_offset_t)&lowGlo.lgVerCode,
		(ppnum_t)&lowGlo.lgVerCode >> 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(end); addr < round_page(static_memory_end); addr += PAGE_SIZE) {

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

	}
	
/*
 *	Here we map a window into the kernel address space that will be used to
 *  access a slice of a user address space. Clients for this service include
 *  copyin/out and copypv.
 */

	lowGlo.lgUMWvaddr = USER_MEM_WINDOW_VADDR;
										/* Initialize user memory window base address */
	MapUserMemoryWindowInit();			/* Go initialize user memory window */

/*
 *	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 */
	PE_init_platform(TRUE, args);		/* Initialize this right off the bat */


#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(getPerProc()->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(exception_entry), 
		trunc_page(exception_entry), round_page(exception_end));
	kprintf("          sectTEXTB: %08X, %08X - %08X\n", trunc_page(sectTEXTB), 
		trunc_page(sectTEXTB), round_page(sectTEXTB+sectSizeTEXT));
	kprintf("          sectDATAB: %08X, %08X - %08X\n", trunc_page(sectDATAB), 
		trunc_page(sectDATAB), round_page(sectDATAB+sectSizeDATA));
	kprintf("          sectLINKB: %08X, %08X - %08X\n", trunc_page(sectLINKB), 
		trunc_page(sectLINKB), round_page(sectLINKB+sectSizeLINK));
	kprintf("           sectKLDB: %08X, %08X - %08X\n", trunc_page(sectKLDB), 
		trunc_page(sectKLDB), round_page(sectKLDB+sectSizeKLD));
	kprintf("               end: %08X, %08X - %08X\n", trunc_page(end), 
		trunc_page(end), static_memory_end);

#endif

	return;
}
Commit	Line	Data
1c79356b	1	/*
3a60a9f5	2	* Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
1c79356b	3	*
8ad349bb	4	* @APPLE_LICENSE_OSREFERENCE_HEADER_START@
1c79356b	5	*
8ad349bb A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the
	10	* License may not be used to create, or enable the creation or
	11	* redistribution of, unlawful or unlicensed copies of an Apple operating
	12	* system, or to circumvent, violate, or enable the circumvention or
	13	* violation of, any terms of an Apple operating system software license
	14	* agreement.
	15	*
	16	* Please obtain a copy of the License at
	17	* http://www.opensource.apple.com/apsl/ and read it before using this
	18	* file.
	19	*
	20	* The Original Code and all software distributed under the License are
	21	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	22	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	23	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	24	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	25	* Please see the License for the specific language governing rights and
	26	* limitations under the License.
	27	*
	28	* @APPLE_LICENSE_OSREFERENCE_HEADER_END@
1c79356b A	29	*/
	30	/*
	31	* @OSF_COPYRIGHT@
	32	*/
	33	/*
	34	* @APPLE_FREE_COPYRIGHT@
	35	*/
	36
	37	#include <mach_debug.h>
	38	#include <mach_kdb.h>
	39	#include <mach_kdp.h>
	40	#include <debug.h>
1c79356b A	41
	42	#include <mach/vm_types.h>
	43	#include <mach/vm_param.h>
	44	#include <mach/thread_status.h>
	45	#include <kern/misc_protos.h>
	46	#include <kern/assert.h>
	47	#include <kern/cpu_number.h>
91447636	48	#include <kern/thread.h>
5d5c5d0d	49	#include <console/serial_protos.h>
1c79356b A	50
	51	#include <ppc/proc_reg.h>
	52	#include <ppc/Firmware.h>
	53	#include <ppc/boot.h>
	54	#include <ppc/misc_protos.h>
	55	#include <ppc/pmap.h>
1c79356b A	56	#include <ppc/mem.h>
	57	#include <ppc/mappings.h>
	58	#include <ppc/exception.h>
55e303ae	59	#include <ppc/lowglobals.h>
1c79356b	60
1c79356b	61	#include <mach-o/mach_header.h>
1c79356b	62
55e303ae A	63	extern const char version[];
55e303ae A	64	extern const char version_variant[];
1c79356b	65
55e303ae A	66	addr64_t hash_table_base; /* Hash table base */
55e303ae A	67	unsigned int hash_table_size; /* Hash table size */
91447636	68	int hash_table_shift; /* "ht_shift" boot arg, used to scale hash_table_size */
55e303ae A	69	vm_offset_t taproot_addr; /* (BRINGUP) */
55e303ae A	70	unsigned int taproot_size; /* (BRINGUP) */
55e303ae	71	extern int disableConsoleOutput;
1c79356b	72
55e303ae	73	struct shadowBAT shadow_BAT;
d7e50217	74
3a60a9f5 A	75
3a60a9f5 A	76
55e303ae A	77	/*
	78	* NOTE: mem_size is bogus on large memory machines. We will pin it to 0x80000000 if there is more than 2 GB
	79	* This is left only for compatibility and max_mem should be used.
	80	*/
	81	vm_offset_t mem_size; /* Size of actual physical memory present
	82	minus any performance buffer and possibly limited
	83	by mem_limit in bytes */
	84	uint64_t mem_actual; /* The "One True" physical memory size
	85	actually, it's the highest physical address + 1 */
	86	uint64_t max_mem; /* Size of physical memory (bytes), adjusted by maxmem */
	87	uint64_t sane_size; /* Memory size to use for defaults calculations */
	88
	89
	90	mem_region_t pmap_mem_regions[PMAP_MEM_REGION_MAX + 1];
	91	int pmap_mem_regions_count = 0; /* Assume no non-contiguous memory regions */
1c79356b A	92
	93	unsigned int avail_remaining = 0;
	94	vm_offset_t first_avail;
	95	vm_offset_t static_memory_end;
55e303ae	96	addr64_t vm_last_addr = VM_MAX_KERNEL_ADDRESS; /* Highest kernel virtual address known to the VM system */
1c79356b	97
1c79356b A	98	extern struct mach_header _mh_execute_header;
	99	vm_offset_t sectTEXTB;
	100	int sectSizeTEXT;
	101	vm_offset_t sectDATAB;
	102	int sectSizeDATA;
1c79356b A	103	vm_offset_t sectLINKB;
	104	int sectSizeLINK;
	105	vm_offset_t sectKLDB;
	106	int sectSizeKLD;
55e303ae A	107	vm_offset_t sectPRELINKB;
55e303ae A	108	int sectSizePRELINK;
91447636 A	109	vm_offset_t sectHIBB;
91447636 A	110	int sectSizeHIB;
1c79356b A	111
1c79356b A	112	vm_offset_t end, etext, edata;
1c79356b A	113
	114	extern unsigned long exception_entry;
	115	extern unsigned long exception_end;
	116
	117
55e303ae	118	void ppc_vm_init(uint64_t mem_limit, boot_args *args)
1c79356b	119	{
91447636 A	120	unsigned int i, kmapsize, pvr;
91447636 A	121	vm_offset_t addr;
55e303ae A	122	unsigned int *xtaproot, bank_shift;
55e303ae A	123	uint64_t cbsize, xhid0;
1c79356b	124
de355530	125
55e303ae A	126	/*
55e303ae A	127	* Invalidate all shadow BATs
1c79356b	128	*/
1c79356b	129
55e303ae A	130	/* Initialize shadow IBATs */
	131	shadow_BAT.IBATs[0].upper=BAT_INVALID;
	132	shadow_BAT.IBATs[0].lower=BAT_INVALID;
	133	shadow_BAT.IBATs[1].upper=BAT_INVALID;
	134	shadow_BAT.IBATs[1].lower=BAT_INVALID;
	135	shadow_BAT.IBATs[2].upper=BAT_INVALID;
	136	shadow_BAT.IBATs[2].lower=BAT_INVALID;
	137	shadow_BAT.IBATs[3].upper=BAT_INVALID;
	138	shadow_BAT.IBATs[3].lower=BAT_INVALID;
	139
	140	/* Initialize shadow DBATs */
	141	shadow_BAT.DBATs[0].upper=BAT_INVALID;
	142	shadow_BAT.DBATs[0].lower=BAT_INVALID;
	143	shadow_BAT.DBATs[1].upper=BAT_INVALID;
	144	shadow_BAT.DBATs[1].lower=BAT_INVALID;
	145	shadow_BAT.DBATs[2].upper=BAT_INVALID;
	146	shadow_BAT.DBATs[2].lower=BAT_INVALID;
	147	shadow_BAT.DBATs[3].upper=BAT_INVALID;
	148	shadow_BAT.DBATs[3].lower=BAT_INVALID;
	149
	150
	151	/*
	152	* Go through the list of memory regions passed in via the boot_args
1c79356b A	153	* and copy valid entries into the pmap_mem_regions table, adding
1c79356b A	154	* further calculated entries.
55e303ae A	155	*
	156	* boot_args version 1 has address instead of page numbers
	157	* in the PhysicalDRAM banks, set bank_shift accordingly.
1c79356b A	158	*/
1c79356b A	159
55e303ae A	160	bank_shift = 0;
	161	if (args->Version == kBootArgsVersion1) bank_shift = 12;
	162
1c79356b	163	pmap_mem_regions_count = 0;
55e303ae A	164	max_mem = 0; /* Will use to total memory found so far */
	165	mem_actual = 0; /* Actual size of memory */
	166
	167	if (mem_limit == 0) mem_limit = 0xFFFFFFFFFFFFFFFFULL; /* If there is no set limit, use all */
	168
	169	for (i = 0; i < kMaxDRAMBanks; i++) { /* Look at all of the banks */
	170
	171	cbsize = (uint64_t)args->PhysicalDRAM[i].size << (12 - bank_shift); /* Remember current size */
	172
	173	if (!cbsize) continue; /* Skip if the bank is empty */
	174
	175	mem_actual = mem_actual + cbsize; /* Get true memory size */
1c79356b	176
55e303ae	177	if(mem_limit == 0) continue; /* If we hit restriction, just keep counting */
1c79356b	178
55e303ae A	179	if (cbsize > mem_limit) cbsize = mem_limit; /* Trim to max allowed */
	180	max_mem += cbsize; /* Total up what we have so far */
	181	mem_limit = mem_limit - cbsize; /* Calculate amount left to do */
	182
	183	pmap_mem_regions[pmap_mem_regions_count].mrStart = args->PhysicalDRAM[i].base >> bank_shift; /* Set the start of the bank */
	184	pmap_mem_regions[pmap_mem_regions_count].mrAStart = pmap_mem_regions[pmap_mem_regions_count].mrStart; /* Set the start of allocatable area */
	185	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 */
	186	pmap_mem_regions[pmap_mem_regions_count].mrAEnd = pmap_mem_regions[pmap_mem_regions_count].mrEnd; /* Set the end address of allocatable area */
1c79356b	187
de355530 A	188	/* Regions must be provided in ascending order */
de355530 A	189	assert ((pmap_mem_regions_count == 0) \|\|
55e303ae A	190	pmap_mem_regions[pmap_mem_regions_count].mrStart >
55e303ae A	191	pmap_mem_regions[pmap_mem_regions_count-1].mrStart);
1c79356b	192
55e303ae	193	pmap_mem_regions_count++; /* Count this region */
de355530	194	}
91447636	195
55e303ae A	196	mem_size = (unsigned int)max_mem; /* Get size of memory */
55e303ae A	197	if(max_mem > 0x0000000080000000ULL) mem_size = 0x80000000; /* Pin at 2 GB */
d7e50217	198
55e303ae A	199	sane_size = max_mem; /* Calculate a sane value to use for init */
	200	if(sane_size > (addr64_t)(VM_MAX_KERNEL_ADDRESS + 1))
	201	sane_size = (addr64_t)(VM_MAX_KERNEL_ADDRESS + 1); /* If flush with ram, use addressible portion */
43866e37	202
d7e50217	203
55e303ae A	204	/*
	205	* Initialize the pmap system, using space above `first_avail'
	206	* for the necessary data structures.
	207	* NOTE : assume that we'll have enough space mapped in already
	208	*/
	209
	210	first_avail = static_memory_end;
d7e50217	211
91447636 A	212	/*
	213	* Now retrieve addresses for end, edata, and etext
	214	* from MACH-O headers for the currently running 32 bit kernel.
55e303ae A	215	*/
	216	sectTEXTB = (vm_offset_t)getsegdatafromheader(
	217	&_mh_execute_header, "__TEXT", &sectSizeTEXT);
	218	sectDATAB = (vm_offset_t)getsegdatafromheader(
	219	&_mh_execute_header, "__DATA", &sectSizeDATA);
	220	sectLINKB = (vm_offset_t)getsegdatafromheader(
	221	&_mh_execute_header, "__LINKEDIT", &sectSizeLINK);
	222	sectKLDB = (vm_offset_t)getsegdatafromheader(
	223	&_mh_execute_header, "__KLD", &sectSizeKLD);
91447636 A	224	sectHIBB = (vm_offset_t)getsegdatafromheader(
91447636 A	225	&_mh_execute_header, "__HIB", &sectSizeHIB);
55e303ae A	226	sectPRELINKB = (vm_offset_t)getsegdatafromheader(
	227	&_mh_execute_header, "__PRELINK", &sectSizePRELINK);
	228
	229	etext = (vm_offset_t) sectTEXTB + sectSizeTEXT;
	230	edata = (vm_offset_t) sectDATAB + sectSizeDATA;
91447636	231	end = round_page(getlastaddr()); /* Force end to next page */
1c79356b	232
91447636 A	233	kmapsize = (round_page(exception_end) - trunc_page(exception_entry)) + /* Get size we will map later */
	234	(round_page(sectTEXTB+sectSizeTEXT) - trunc_page(sectTEXTB)) +
	235	(round_page(sectDATAB+sectSizeDATA) - trunc_page(sectDATAB)) +
	236	(round_page(sectLINKB+sectSizeLINK) - trunc_page(sectLINKB)) +
	237	(round_page(sectKLDB+sectSizeKLD) - trunc_page(sectKLDB)) +
	238	(round_page_32(sectKLDB+sectSizeHIB) - trunc_page_32(sectHIBB)) +
	239	(round_page(sectPRELINKB+sectSizePRELINK) - trunc_page(sectPRELINKB)) +
	240	(round_page(static_memory_end) - trunc_page(end));
d7e50217	241
55e303ae	242	pmap_bootstrap(max_mem, &first_avail, kmapsize);
d7e50217	243
91447636	244	pmap_map(trunc_page(exception_entry), trunc_page(exception_entry),
5d5c5d0d	245	round_page(exception_end), VM_PROT_READ\|VM_PROT_EXECUTE, VM_WIMG_USE_DEFAULT);
55e303ae	246
91447636	247	pmap_map(trunc_page(sectTEXTB), trunc_page(sectTEXTB),
5d5c5d0d	248	round_page(sectTEXTB+sectSizeTEXT), VM_PROT_READ\|VM_PROT_EXECUTE, VM_WIMG_USE_DEFAULT);
55e303ae	249
91447636	250	pmap_map(trunc_page(sectDATAB), trunc_page(sectDATAB),
5d5c5d0d	251	round_page(sectDATAB+sectSizeDATA), VM_PROT_READ\|VM_PROT_WRITE, VM_WIMG_USE_DEFAULT);
55e303ae A	252
	253	/* The KLD and LINKEDIT segments are unloaded in toto after boot completes,
	254	* but via ml_static_mfree(), through IODTFreeLoaderInfo(). Hence, we have
	255	* to map both segments page-by-page.
	256	*/
	257
91447636 A	258	for (addr = trunc_page(sectPRELINKB);
	259	addr < round_page(sectPRELINKB+sectSizePRELINK);
	260	addr += PAGE_SIZE) {
	261
	262	pmap_enter(kernel_pmap, (vm_map_offset_t)addr, (ppnum_t)(addr>>12),
5d5c5d0d	263	VM_PROT_READ\|VM_PROT_WRITE\|VM_PROT_EXECUTE,
91447636 A	264	VM_WIMG_USE_DEFAULT, TRUE);
	265
	266	}
	267
	268	for (addr = trunc_page(sectKLDB);
	269	addr < round_page(sectKLDB+sectSizeKLD);
1c79356b A	270	addr += PAGE_SIZE) {
1c79356b A	271
91447636	272	pmap_enter(kernel_pmap, (vm_map_offset_t)addr, (ppnum_t)(addr>>12),
5d5c5d0d	273	VM_PROT_READ\|VM_PROT_WRITE\|VM_PROT_EXECUTE,
9bccf70c	274	VM_WIMG_USE_DEFAULT, TRUE);
55e303ae	275
1c79356b A	276	}
1c79356b A	277
91447636 A	278	for (addr = trunc_page(sectLINKB);
91447636 A	279	addr < round_page(sectLINKB+sectSizeLINK);
1c79356b A	280	addr += PAGE_SIZE) {
1c79356b A	281
91447636 A	282	pmap_enter(kernel_pmap, (vm_map_offset_t)addr,
91447636 A	283	(ppnum_t)(addr>>12),
5d5c5d0d	284	VM_PROT_READ\|VM_PROT_WRITE\|VM_PROT_EXECUTE,
9bccf70c	285	VM_WIMG_USE_DEFAULT, TRUE);
55e303ae	286
1c79356b A	287	}
1c79356b A	288
91447636 A	289	for (addr = trunc_page_32(sectHIBB);
91447636 A	290	addr < round_page_32(sectHIBB+sectSizeHIB);
55e303ae A	291	addr += PAGE_SIZE) {
55e303ae A	292
91447636	293	pmap_enter(kernel_pmap, (vm_map_offset_t)addr, (ppnum_t)(addr>>12),
5d5c5d0d	294	VM_PROT_READ\|VM_PROT_WRITE\|VM_PROT_EXECUTE,
55e303ae A	295	VM_WIMG_USE_DEFAULT, TRUE);
	296
	297	}
	298
91447636 A	299	pmap_enter(kernel_pmap, (vm_map_offset_t)&sharedPage,
91447636 A	300	(ppnum_t)&sharedPage >> 12, /* Make sure the sharedPage is mapped */
55e303ae A	301	VM_PROT_READ\|VM_PROT_WRITE,
	302	VM_WIMG_USE_DEFAULT, TRUE);
	303
91447636 A	304	pmap_enter(kernel_pmap, (vm_map_offset_t)&lowGlo.lgVerCode,
91447636 A	305	(ppnum_t)&lowGlo.lgVerCode >> 12, /* Make sure the low memory globals are mapped */
55e303ae A	306	VM_PROT_READ\|VM_PROT_WRITE,
	307	VM_WIMG_USE_DEFAULT, TRUE);
	308
1c79356b A	309	/*
	310	* We need to map the remainder page-by-page because some of this will
	311	* be released later, but not all. Ergo, no block mapping here
	312	*/
55e303ae	313
91447636	314	for(addr = trunc_page(end); addr < round_page(static_memory_end); addr += PAGE_SIZE) {
55e303ae	315
91447636	316	pmap_enter(kernel_pmap, (vm_map_address_t)addr, (ppnum_t)addr>>12,
5d5c5d0d	317	VM_PROT_READ\|VM_PROT_WRITE\|VM_PROT_EXECUTE,
9bccf70c	318	VM_WIMG_USE_DEFAULT, TRUE);
d7e50217	319
de355530	320	}
91447636 A	321
	322	/*
	323	* Here we map a window into the kernel address space that will be used to
	324	* access a slice of a user address space. Clients for this service include
	325	* copyin/out and copypv.
	326	*/
55e303ae	327
91447636 A	328	lowGlo.lgUMWvaddr = USER_MEM_WINDOW_VADDR;
	329	/* Initialize user memory window base address */
	330	MapUserMemoryWindowInit(); /* Go initialize user memory window */
1c79356b	331
d52fe63f	332	/*
55e303ae A	333	* At this point, there is enough mapped memory and all hw mapping structures are
	334	* allocated and initialized. Here is where we turn on translation for the
	335	* VERY first time....
	336	*
	337	* NOTE: Here is where our very first interruption will happen.
	338	*
d52fe63f	339	*/
1c79356b	340
55e303ae	341	hw_start_trans(); /* Start translating */
3a60a9f5 A	342	PE_init_platform(TRUE, args); /* Initialize this right off the bat */
3a60a9f5 A	343
55e303ae A	344
	345	#if 0
	346	GratefulDebInit((bootBumbleC )&(args->Video)); / Initialize the GratefulDeb debugger */
	347	#endif
	348
	349
	350	printf_init(); /* Init this in case we need debugger */
	351	panic_init(); /* Init this in case we need debugger */
	352	PE_init_kprintf(TRUE); /* Note on PPC we only call this after VM is set up */
	353
	354	kprintf("kprintf initialized\n");
	355
	356	serialmode = 0; /* Assume normal keyboard and console */
	357	if(PE_parse_boot_arg("serial", &serialmode)) { /* Do we want a serial keyboard and/or console? */
	358	kprintf("Serial mode specified: %08X\n", serialmode);
	359	}
	360	if(serialmode & 1) { /* Start serial if requested */
	361	(void)switch_to_serial_console(); /* Switch into serial mode */
	362	disableConsoleOutput = FALSE; /* Allow printfs to happen */
	363	}
	364
	365	kprintf("max_mem: %ld M\n", (unsigned long)(max_mem >> 20));
	366	kprintf("version_variant = %s\n", version_variant);
	367	kprintf("version = %s\n\n", version);
	368	__asm__ ("mfpvr %0" : "=r" (pvr));
	369	kprintf("proc version = %08x\n", pvr);
91447636	370	if(getPerProc()->pf.Available & pf64Bit) { /* 64-bit processor? */
55e303ae A	371	xhid0 = hid0get64(); /* Get the hid0 */
	372	if(xhid0 & (1ULL << (63 - 19))) kprintf("Time base is externally clocked\n");
	373	else kprintf("Time base is internally clocked\n");
	374	}
	375
	376
	377	taproot_size = PE_init_taproot(&taproot_addr); /* (BRINGUP) See if there is a taproot */
	378	if(taproot_size) { /* (BRINGUP) */
	379	kprintf("TapRoot card configured to use vaddr = %08X, size = %08X\n", taproot_addr, taproot_size);
	380	bcopy_nc((void )version, (void )(taproot_addr + 16), strlen(version)); /* (BRINGUP) Pass it our kernel version */
	381	__asm__ volatile("eieio"); /* (BRINGUP) */
	382	xtaproot = (unsigned int )taproot_addr; / (BRINGUP) */
	383	xtaproot[0] = 1; /* (BRINGUP) */
	384	__asm__ volatile("eieio"); /* (BRINGUP) */
	385	}
	386
	387	PE_create_console(); /* create the console for verbose or pretty mode */
1c79356b	388
55e303ae A	389	/* setup console output */
55e303ae A	390	PE_init_printf(FALSE);
1c79356b	391
1c79356b	392	#if DEBUG
55e303ae A	393	printf("\n\n\nThis program was compiled using gcc %d.%d for powerpc\n",
	394	__GNUC__,__GNUC_MINOR__);
	395
	396
	397	/* Processor version information */
	398	{
	399	unsigned int pvr;
	400	__asm__ ("mfpvr %0" : "=r" (pvr));
	401	printf("processor version register : %08X\n", pvr);
	402	}
	403
	404	kprintf("Args at %08X\n", args);
	405	for (i = 0; i < pmap_mem_regions_count; i++) {
	406	printf("DRAM at %08X size %08X\n",
	407	args->PhysicalDRAM[i].base,
	408	args->PhysicalDRAM[i].size);
	409	}
	410	#endif /* DEBUG */
	411
	412	#if DEBUG
	413	kprintf("Mapped memory:\n");
91447636 A	414	kprintf(" exception vector: %08X, %08X - %08X\n", trunc_page(exception_entry),
	415	trunc_page(exception_entry), round_page(exception_end));
	416	kprintf(" sectTEXTB: %08X, %08X - %08X\n", trunc_page(sectTEXTB),
	417	trunc_page(sectTEXTB), round_page(sectTEXTB+sectSizeTEXT));
	418	kprintf(" sectDATAB: %08X, %08X - %08X\n", trunc_page(sectDATAB),
	419	trunc_page(sectDATAB), round_page(sectDATAB+sectSizeDATA));
	420	kprintf(" sectLINKB: %08X, %08X - %08X\n", trunc_page(sectLINKB),
	421	trunc_page(sectLINKB), round_page(sectLINKB+sectSizeLINK));
	422	kprintf(" sectKLDB: %08X, %08X - %08X\n", trunc_page(sectKLDB),
	423	trunc_page(sectKLDB), round_page(sectKLDB+sectSizeKLD));
	424	kprintf(" end: %08X, %08X - %08X\n", trunc_page(end),
	425	trunc_page(end), static_memory_end);
55e303ae	426
1c79356b	427	#endif
55e303ae A	428
55e303ae A	429	return;
1c79356b A	430	}
1c79356b A	431