[apple/xnu.git] / osfmk / ppc / ppc_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@
 */

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

#include <kern/misc_protos.h>
#include <kern/thread.h>
#include <kern/processor.h>
#include <machine/machine_routines.h>
#include <ppc/boot.h>
#include <ppc/proc_reg.h>
#include <ppc/misc_protos.h>
#include <ppc/pmap.h>
#include <ppc/new_screen.h>
#include <ppc/exception.h>
#include <ppc/Firmware.h>
#include <ppc/savearea.h>
#include <ppc/low_trace.h>
#include <ppc/Diagnostics.h>

#include <pexpert/pexpert.h>

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

extern unsigned int intstack_top_ss;	/* declared in start.s */
extern unsigned int debstackptr;	/* declared in start.s */
extern unsigned int debstack_top_ss;	/* declared in start.s */

extern void thandler(void);     /* trap handler */
extern void ihandler(void);     /* interrupt handler */
extern void shandler(void);     /* syscall handler */
extern void chandler(void);     /* system choke */
extern void fpu_switch(void);   /* fp handler */
extern void vec_switch(void);   /* vector handler */
extern void atomic_switch_trap(void);   /* fast path atomic thread switch */

void (*exception_handlers[])(void) = {
	thandler,	/* 0x000   INVALID EXCEPTION (T_IN_VAIN) */
	thandler,	/* 0x100   System reset (T_RESET) */
	thandler,	/* 0x200   Machine check (T_MACHINE_CHECK) */
	thandler,	/* 0x300   Data access (T_DATA_ACCESS) */
	thandler,	/* 0x400   Instruction access (T_INSTRUCTION_ACCESS) */
	ihandler,	/* 0x500   External interrupt (T_INTERRUPT) */
	thandler,	/* 0x600   Alignment (T_ALIGNMENT) */
	thandler,	/* 0x700   fp exc, ill/priv instr, trap  (T_PROGRAM) */
	fpu_switch,	/* 0x800   Floating point disabled (T_FP_UNAVAILABLE) */
	ihandler,	/* 0x900   Decrementer (T_DECREMENTER) */
	thandler,	/* 0xA00   I/O controller interface (T_IO_ERROR) */
	thandler,	/* 0xB00   INVALID EXCEPTION (T_RESERVED) */
	shandler,	/* 0xC00   System call exception (T_SYSTEM_CALL) */
	thandler,	/* 0xD00   Trace (T_TRACE) */
	thandler,	/* 0xE00   FP assist (T_FP_ASSIST) */
	thandler,	/* 0xF00   Performance monitor (T_PERF_MON) */
	vec_switch,	/* 0xF20   VMX (T_VMX) */
	thandler,	/* 0x1000  INVALID EXCEPTION (T_INVALID_EXCP0) */
	thandler,	/* 0x1100  INVALID EXCEPTION (T_INVALID_EXCP1) */
	thandler,	/* 0x1200  INVALID EXCEPTION (T_INVALID_EXCP2) */
	thandler,	/* 0x1300  instruction breakpoint (T_INSTRUCTION_BKPT) */
	ihandler,	/* 0x1400  system management (T_SYSTEM_MANAGEMENT) */
	thandler,	/* 0x1600  Altivec Assist (T_ALTIVEC_ASSIST) */
	ihandler,	/* 0x1700  Thermal interruption (T_THERMAL) */
	thandler,	/* 0x1800  INVALID EXCEPTION (T_INVALID_EXCP5) */
	thandler,	/* 0x1900  INVALID EXCEPTION (T_INVALID_EXCP6) */
	thandler,	/* 0x1A00  INVALID EXCEPTION (T_INVALID_EXCP7) */
	thandler,	/* 0x1B00  INVALID EXCEPTION (T_INVALID_EXCP8) */
	thandler,	/* 0x1C00  INVALID EXCEPTION (T_INVALID_EXCP9) */
	thandler,	/* 0x1D00  INVALID EXCEPTION (T_INVALID_EXCP10) */
	thandler,	/* 0x1E00  INVALID EXCEPTION (T_INVALID_EXCP11) */
	thandler,	/* 0x1F00  INVALID EXCEPTION (T_INVALID_EXCP12) */
	thandler,	/* 0x1F00  INVALID EXCEPTION (T_INVALID_EXCP13) */
	thandler,	/* 0x2000  Run Mode/Trace (T_RUNMODE_TRACE) */

	ihandler,	/* Software  Signal processor (T_SIGP) */
	thandler,	/* Software  Preemption (T_PREEMPT) */
	ihandler,	/* Software  INVALID EXCEPTION (T_CSWITCH) */ 
	ihandler,	/* Software  Shutdown Context (T_SHUTDOWN) */
	chandler	/* Software  System choke (crash) (T_CHOKE) */
};

int pc_trace_buf[1024] = {0};
int pc_trace_cnt = 1024;

void ppc_init(boot_args *args)
{
	int i;
	unsigned long *src,*dst;
	char *str;
	unsigned long	addr, videoAddr;
	unsigned int	maxmem;
	bat_t		    bat;
	extern vm_offset_t static_memory_end;
	
	/*
	 * Setup per_proc info for first cpu.
	 */

	per_proc_info[0].cpu_number = 0;
	per_proc_info[0].cpu_flags = 0;
	per_proc_info[0].istackptr = 0;	/* we're on the interrupt stack */
	per_proc_info[0].intstack_top_ss = intstack_top_ss;
	per_proc_info[0].debstackptr = debstackptr;
	per_proc_info[0].debstack_top_ss = debstack_top_ss;
	per_proc_info[0].interrupts_enabled = 0;
	per_proc_info[0].active_kloaded = (unsigned int)
		&active_kloaded[0];
	per_proc_info[0].cpu_data = (unsigned int)
		&cpu_data[0];
	per_proc_info[0].active_stacks = (unsigned int)
		&active_stacks[0];
	per_proc_info[0].need_ast = (unsigned int)
		&need_ast[0];
	per_proc_info[0].FPU_thread = 0;
	per_proc_info[0].FPU_vmmCtx = 0;
	per_proc_info[0].VMX_thread = 0;
	per_proc_info[0].VMX_vmmCtx = 0;

	machine_slot[0].is_cpu = TRUE;

	cpu_init();

	/*
	 * Setup some processor related structures to satisfy funnels.
	 * Must be done before using unparallelized device drivers.
	 */
	processor_ptr[0] = &processor_array[0];
	master_cpu = 0;
	master_processor = cpu_to_processor(master_cpu);

	/* Set up segment registers as VM through space 0 */
	for (i=0; i<=15; i++) {
	  isync();
	  mtsrin((KERNEL_SEG_REG0_VALUE | (i << 20)), i * 0x10000000);
	  sync();
	}

	static_memory_end = round_page(args->topOfKernelData);;
        /* Get platform expert set up */
	PE_init_platform(FALSE, args);


	/* This is how the BATs get configured */
	/* IBAT[0] maps Segment 0 1:1 */
	/* DBAT[0] maps Segment 0 1:1 */
	/* DBAT[2] maps the I/O Segment 1:1 */
	/* DBAT[3] maps the Video Segment 1:1 */

	/* If v_baseAddr is non zero, use DBAT3 to map the video segment */
	videoAddr = args->Video.v_baseAddr & 0xF0000000;
	if (videoAddr) {
	  /* start off specifying 1-1 mapping of video seg */
	  bat.upper.word	     = videoAddr;
	  bat.lower.word	     = videoAddr;
	  
	  bat.upper.bits.bl    = 0x7ff;	/* size = 256M */
	  bat.upper.bits.vs    = 1;
	  bat.upper.bits.vp    = 0;
	  
	  bat.lower.bits.wimg  = PTE_WIMG_IO;
	  bat.lower.bits.pp    = 2;	/* read/write access */
	  
	  sync();isync();
	  mtdbatu(3, BAT_INVALID); /* invalidate old mapping */
	  mtdbatl(3, bat.lower.word);
	  mtdbatu(3, bat.upper.word);
	  sync();isync();
	}
	
	/* Use DBAT2 to map the io segment */
	addr = get_io_base_addr() & 0xF0000000;
	if (addr != videoAddr) {
	  /* start off specifying 1-1 mapping of io seg */
	  bat.upper.word	     = addr;
	  bat.lower.word	     = addr;
	  
	  bat.upper.bits.bl    = 0x7ff;	/* size = 256M */
	  bat.upper.bits.vs    = 1;
	  bat.upper.bits.vp    = 0;
	  
	  bat.lower.bits.wimg  = PTE_WIMG_IO;
	  bat.lower.bits.pp    = 2;	/* read/write access */
	  
	  sync();isync();
	  mtdbatu(2, BAT_INVALID); /* invalidate old mapping */
	  mtdbatl(2, bat.lower.word);
	  mtdbatu(2, bat.upper.word);
	  sync();isync();
	}

	if (!PE_parse_boot_arg("diag", &dgWork.dgFlags)) dgWork.dgFlags=0;	/* Set diagnostic flags */
	if(dgWork.dgFlags & enaExpTrace) trcWork.traceMask = 0xFFFFFFFF;	/* If tracing requested, enable it */

#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 */

	/* setup debugging output if one has been chosen */
	PE_init_kprintf(FALSE);
	kprintf("kprintf initialized\n");

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

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

	kprintf("version_variant = %s\n", version_variant);
	kprintf("version         = %s\n", version);

#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 : 0x%08x\n",pvr);
	}
	for (i = 0; i < kMaxDRAMBanks; i++) {
		if (args->PhysicalDRAM[i].size) 
			printf("DRAM at 0x%08x size 0x%08x\n",
			       args->PhysicalDRAM[i].base,
			       args->PhysicalDRAM[i].size);
	}
#endif /* DEBUG */

	/*   
	 * VM initialization, after this we're using page tables...
	 */
	if (!PE_parse_boot_arg("maxmem", &maxmem))
		maxmem=0;
	else
		maxmem = maxmem * (1024 * 1024);

	ppc_vm_init(maxmem, args);

	PE_init_platform(TRUE, args);
	
	machine_startup(args);
}

ppc_init_cpu(
	struct per_proc_info *proc_info)
{
	int i;
	unsigned int gph;
	savectl *sctl;							/* Savearea controls */

	if(proc_info->savedSave) {				/* Do we have a savearea set up already? */
		mtsprg(1, proc_info->savedSave);	/* Set saved address of savearea */
	}
	else {
		gph = (unsigned int)save_get_phys();	/* Get a savearea (physical addressing) */
		mtsprg(1, gph);						/* Set physical address of savearea */
	}
	
	cpu_init();
	
	proc_info->Lastpmap = 0;				/* Clear last used space */

	/* Set up segment registers as VM through space 0 */
	for (i=0; i<=15; i++) {
	  isync();
	  mtsrin((KERNEL_SEG_REG0_VALUE | (i << 20)), i * 0x10000000);
	  sync();
	}

	ppc_vm_cpu_init(proc_info);

	ml_thrm_init();							/* Start thermal monitoring on this processor */

	slave_main();
}
Commit	Line	Data
1c79356b A	1	/*
	2	* Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	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.
	11	*
	12	* This Original Code and all software distributed under the License are
	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	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.
	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/*
	23	* @OSF_COPYRIGHT@
	24	*/
	25
	26	#include <debug.h>
	27	#include <mach_kdb.h>
	28	#include <mach_kdp.h>
	29
	30	#include <kern/misc_protos.h>
	31	#include <kern/thread.h>
	32	#include <kern/processor.h>
	33	#include <machine/machine_routines.h>
	34	#include <ppc/boot.h>
	35	#include <ppc/proc_reg.h>
	36	#include <ppc/misc_protos.h>
	37	#include <ppc/pmap.h>
	38	#include <ppc/new_screen.h>
	39	#include <ppc/exception.h>
	40	#include <ppc/Firmware.h>
	41	#include <ppc/savearea.h>
	42	#include <ppc/low_trace.h>
	43	#include <ppc/Diagnostics.h>
	44
	45	#include <pexpert/pexpert.h>
	46
	47	extern const char version[];
	48	extern const char version_variant[];
	49
	50	extern unsigned int intstack_top_ss; /* declared in start.s */
1c79356b A	51	extern unsigned int debstackptr; /* declared in start.s */
1c79356b A	52	extern unsigned int debstack_top_ss; /* declared in start.s */
1c79356b A	53
	54	extern void thandler(void); /* trap handler */
	55	extern void ihandler(void); /* interrupt handler */
	56	extern void shandler(void); /* syscall handler */
0b4e3aa0	57	extern void chandler(void); /* system choke */
1c79356b A	58	extern void fpu_switch(void); /* fp handler */
	59	extern void vec_switch(void); /* vector handler */
	60	extern void atomic_switch_trap(void); /* fast path atomic thread switch */
	61
	62	void (*exception_handlers[])(void) = {
	63	thandler, /* 0x000 INVALID EXCEPTION (T_IN_VAIN) */
	64	thandler, /* 0x100 System reset (T_RESET) */
	65	thandler, /* 0x200 Machine check (T_MACHINE_CHECK) */
	66	thandler, /* 0x300 Data access (T_DATA_ACCESS) */
	67	thandler, /* 0x400 Instruction access (T_INSTRUCTION_ACCESS) */
	68	ihandler, /* 0x500 External interrupt (T_INTERRUPT) */
	69	thandler, /* 0x600 Alignment (T_ALIGNMENT) */
	70	thandler, /* 0x700 fp exc, ill/priv instr, trap (T_PROGRAM) */
	71	fpu_switch, /* 0x800 Floating point disabled (T_FP_UNAVAILABLE) */
	72	ihandler, /* 0x900 Decrementer (T_DECREMENTER) */
	73	thandler, /* 0xA00 I/O controller interface (T_IO_ERROR) */
	74	thandler, /* 0xB00 INVALID EXCEPTION (T_RESERVED) */
	75	shandler, /* 0xC00 System call exception (T_SYSTEM_CALL) */
	76	thandler, /* 0xD00 Trace (T_TRACE) */
	77	thandler, /* 0xE00 FP assist (T_FP_ASSIST) */
	78	thandler, /* 0xF00 Performance monitor (T_PERF_MON) */
	79	vec_switch, /* 0xF20 VMX (T_VMX) */
	80	thandler, /* 0x1000 INVALID EXCEPTION (T_INVALID_EXCP0) */
	81	thandler, /* 0x1100 INVALID EXCEPTION (T_INVALID_EXCP1) */
	82	thandler, /* 0x1200 INVALID EXCEPTION (T_INVALID_EXCP2) */
	83	thandler, /* 0x1300 instruction breakpoint (T_INSTRUCTION_BKPT) */
	84	ihandler, /* 0x1400 system management (T_SYSTEM_MANAGEMENT) */
	85	thandler, /* 0x1600 Altivec Assist (T_ALTIVEC_ASSIST) */
	86	ihandler, /* 0x1700 Thermal interruption (T_THERMAL) */
	87	thandler, /* 0x1800 INVALID EXCEPTION (T_INVALID_EXCP5) */
	88	thandler, /* 0x1900 INVALID EXCEPTION (T_INVALID_EXCP6) */
	89	thandler, /* 0x1A00 INVALID EXCEPTION (T_INVALID_EXCP7) */
	90	thandler, /* 0x1B00 INVALID EXCEPTION (T_INVALID_EXCP8) */
	91	thandler, /* 0x1C00 INVALID EXCEPTION (T_INVALID_EXCP9) */
	92	thandler, /* 0x1D00 INVALID EXCEPTION (T_INVALID_EXCP10) */
	93	thandler, /* 0x1E00 INVALID EXCEPTION (T_INVALID_EXCP11) */
	94	thandler, /* 0x1F00 INVALID EXCEPTION (T_INVALID_EXCP12) */
	95	thandler, /* 0x1F00 INVALID EXCEPTION (T_INVALID_EXCP13) */
	96	thandler, /* 0x2000 Run Mode/Trace (T_RUNMODE_TRACE) */
	97
	98	ihandler, /* Software Signal processor (T_SIGP) */
	99	thandler, /* Software Preemption (T_PREEMPT) */
	100	ihandler, /* Software INVALID EXCEPTION (T_CSWITCH) */
0b4e3aa0 A	101	ihandler, /* Software Shutdown Context (T_SHUTDOWN) */
0b4e3aa0 A	102	chandler /* Software System choke (crash) (T_CHOKE) */
1c79356b A	103	};
	104
	105	int pc_trace_buf[1024] = {0};
	106	int pc_trace_cnt = 1024;
	107
	108	void ppc_init(boot_args *args)
	109	{
	110	int i;
	111	unsigned long src,dst;
	112	char *str;
	113	unsigned long addr, videoAddr;
	114	unsigned int maxmem;
	115	bat_t bat;
	116	extern vm_offset_t static_memory_end;
	117
	118	/*
	119	* Setup per_proc info for first cpu.
	120	*/
	121
	122	per_proc_info[0].cpu_number = 0;
	123	per_proc_info[0].cpu_flags = 0;
	124	per_proc_info[0].istackptr = 0; /* we're on the interrupt stack */
	125	per_proc_info[0].intstack_top_ss = intstack_top_ss;
1c79356b A	126	per_proc_info[0].debstackptr = debstackptr;
1c79356b A	127	per_proc_info[0].debstack_top_ss = debstack_top_ss;
0b4e3aa0	128	per_proc_info[0].interrupts_enabled = 0;
1c79356b A	129	per_proc_info[0].active_kloaded = (unsigned int)
	130	&active_kloaded[0];
	131	per_proc_info[0].cpu_data = (unsigned int)
	132	&cpu_data[0];
	133	per_proc_info[0].active_stacks = (unsigned int)
	134	&active_stacks[0];
	135	per_proc_info[0].need_ast = (unsigned int)
	136	&need_ast[0];
	137	per_proc_info[0].FPU_thread = 0;
	138	per_proc_info[0].FPU_vmmCtx = 0;
	139	per_proc_info[0].VMX_thread = 0;
	140	per_proc_info[0].VMX_vmmCtx = 0;
	141
	142	machine_slot[0].is_cpu = TRUE;
	143
	144	cpu_init();
	145
	146	/*
	147	* Setup some processor related structures to satisfy funnels.
	148	* Must be done before using unparallelized device drivers.
	149	*/
	150	processor_ptr[0] = &processor_array[0];
	151	master_cpu = 0;
	152	master_processor = cpu_to_processor(master_cpu);
	153
	154	/* Set up segment registers as VM through space 0 */
	155	for (i=0; i<=15; i++) {
	156	isync();
	157	mtsrin((KERNEL_SEG_REG0_VALUE \| (i << 20)), i * 0x10000000);
	158	sync();
	159	}
	160
	161	static_memory_end = round_page(args->topOfKernelData);;
	162	/* Get platform expert set up */
	163	PE_init_platform(FALSE, args);
	164
	165
	166	/* This is how the BATs get configured */
	167	/* IBAT[0] maps Segment 0 1:1 */
	168	/* DBAT[0] maps Segment 0 1:1 */
	169	/* DBAT[2] maps the I/O Segment 1:1 */
	170	/* DBAT[3] maps the Video Segment 1:1 */
	171
	172	/* If v_baseAddr is non zero, use DBAT3 to map the video segment */
	173	videoAddr = args->Video.v_baseAddr & 0xF0000000;
	174	if (videoAddr) {
	175	/* start off specifying 1-1 mapping of video seg */
	176	bat.upper.word = videoAddr;
	177	bat.lower.word = videoAddr;
	178
	179	bat.upper.bits.bl = 0x7ff; /* size = 256M */
	180	bat.upper.bits.vs = 1;
	181	bat.upper.bits.vp = 0;
	182
	183	bat.lower.bits.wimg = PTE_WIMG_IO;
	184	bat.lower.bits.pp = 2; /* read/write access */
	185
	186	sync();isync();
	187	mtdbatu(3, BAT_INVALID); /* invalidate old mapping */
	188	mtdbatl(3, bat.lower.word);
	189	mtdbatu(3, bat.upper.word);
	190	sync();isync();
	191	}
	192
193	/* Use DBAT2 to map the io segment */
194	addr = get_io_base_addr() & 0xF0000000;
195	if (addr != videoAddr) {
196	/* start off specifying 1-1 mapping of io seg */
197	bat.upper.word = addr;
198	bat.lower.word = addr;
199
200	bat.upper.bits.bl = 0x7ff; /* size = 256M */
201	bat.upper.bits.vs = 1;
202	bat.upper.bits.vp = 0;
203
204	bat.lower.bits.wimg = PTE_WIMG_IO;
205	bat.lower.bits.pp = 2; /* read/write access */
206
207	sync();isync();
208	mtdbatu(2, BAT_INVALID); /* invalidate old mapping */
209	mtdbatl(2, bat.lower.word);
210	mtdbatu(2, bat.upper.word);
211	sync();isync();
212	}
213
214	if (!PE_parse_boot_arg("diag", &dgWork.dgFlags)) dgWork.dgFlags=0; /* Set diagnostic flags */
215	if(dgWork.dgFlags & enaExpTrace) trcWork.traceMask = 0xFFFFFFFF; /* If tracing requested, enable it */
216
217	#if 0
218	GratefulDebInit((bootBumbleC )&(args->Video)); / Initialize the GratefulDeb debugger */
219	#endif
220
221	printf_init(); /* Init this in case we need debugger */
222	panic_init(); /* Init this in case we need debugger */
223
224	/* setup debugging output if one has been chosen */
225	PE_init_kprintf(FALSE);
226	kprintf("kprintf initialized\n");
227
228	/* create the console for verbose or pretty mode */
229	PE_create_console();
230
231	/* setup console output */
232	PE_init_printf(FALSE);
233
234	kprintf("version_variant = %s\n", version_variant);
235	kprintf("version = %s\n", version);
236
237	#if DEBUG
238	printf("\n\n\nThis program was compiled using gcc %d.%d for powerpc\n",
239	__GNUC__,__GNUC_MINOR__);
240
241	/* Processor version information */
242	{
243	unsigned int pvr;
244	__asm__ ("mfpvr %0" : "=r" (pvr));
245	printf("processor version register : 0x%08x\n",pvr);
246	}
247	for (i = 0; i < kMaxDRAMBanks; i++) {
248	if (args->PhysicalDRAM[i].size)
249	printf("DRAM at 0x%08x size 0x%08x\n",
250	args->PhysicalDRAM[i].base,
251	args->PhysicalDRAM[i].size);
252	}
253	#endif /* DEBUG */
254
255	/*
256	* VM initialization, after this we're using page tables...
257	*/
258	if (!PE_parse_boot_arg("maxmem", &maxmem))
259	maxmem=0;
260	else
261	maxmem = maxmem * (1024 * 1024);
262
263	ppc_vm_init(maxmem, args);
264
265	PE_init_platform(TRUE, args);
266
267	machine_startup(args);
268	}
269
270	ppc_init_cpu(
271	struct per_proc_info *proc_info)
272	{
273	int i;
274	unsigned int gph;
275	savectl sctl; / Savearea controls */
276
277	if(proc_info->savedSave) { /* Do we have a savearea set up already? */
278	mtsprg(1, proc_info->savedSave); /* Set saved address of savearea */
279	}
280	else {
281	gph = (unsigned int)save_get_phys(); /* Get a savearea (physical addressing) */
282	mtsprg(1, gph); /* Set physical address of savearea */
283	}
284
285	cpu_init();
286
287	proc_info->Lastpmap = 0; /* Clear last used space */
288
289	/* Set up segment registers as VM through space 0 */
290	for (i=0; i<=15; i++) {
291	isync();
292	mtsrin((KERNEL_SEG_REG0_VALUE \| (i << 20)), i * 0x10000000);
293	sync();
294	}
295
296	ppc_vm_cpu_init(proc_info);
297
298	ml_thrm_init(); /* Start thermal monitoring on this processor */
299
300	slave_main();
301	}