WebSVN – HelenOS – Blame – /trunk/kernel/arch/sparc64/src/cpu/cpu.c

Rev	Author	Line No.	Line
640	jermar	1	/*
		2	* Copyright (C) 2005 Jakub Jermar
		3	* All rights reserved.
		4	*
		5	* Redistribution and use in source and binary forms, with or without
		6	* modification, are permitted provided that the following conditions
		7	* are met:
		8	*
		9	* - Redistributions of source code must retain the above copyright
		10	* notice, this list of conditions and the following disclaimer.
		11	* - Redistributions in binary form must reproduce the above copyright
		12	* notice, this list of conditions and the following disclaimer in the
		13	* documentation and/or other materials provided with the distribution.
		14	* - The name of the author may not be used to endorse or promote products
		15	* derived from this software without specific prior written permission.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
		18	* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
		19	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
		20	* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
		21	* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
		22	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
		23	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
		24	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
		25	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
		26	* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
		27	*/
		28
1731	jermar	29	/** @addtogroup sparc64
1702	cejka	30	* @{
		31	*/
		32	/** @file
		33	*/
		34
1881	jermar	35	#include <arch/asm.h>
640	jermar	36	#include <cpu.h>
		37	#include <arch.h>
1899	jermar	38	#include <print.h>
640	jermar	39	#include <arch/register.h>
1899	jermar	40	#include <genarch/ofw/ofw_tree.h>
		41	#include <arch/types.h>
		42	#include <arch/drivers/tick.h>
1917	jermar	43	#include <arch/mm/page.h>
		44	#include <arch/mm/tlb.h>
		45	#include <macros.h>
640	jermar	46
1899	jermar	47	/** Perform sparc64 specific initialization of the processor structure for the current processor. */
640	jermar	48	void cpu_arch_init(void)
		49	{
1899	jermar	50	ofw_tree_node_t *node;
		51	uint32_t mid;
		52	uint32_t clock_frequency = 0;
		53	upa_config_t upa_config;
		54
		55	upa_config.value = upa_config_read();
1903	jermar	56	CPU->arch.mid = upa_config.mid;
		57
1917	jermar	58	/*
		59	* Detect processor frequency.
		60	*/
1899	jermar	61	node = ofw_tree_find_child_by_device_type(ofw_tree_lookup("/"), "cpu");
		62	while (node) {
		63	ofw_tree_property_t *prop;
		64
		65	prop = ofw_tree_getprop(node, "upa-portid");
		66	if (prop && prop->value) {
		67	mid = ((uint32_t ) prop->value);
1903	jermar	68	if (mid == CPU->arch.mid) {
1899	jermar	69	prop = ofw_tree_getprop(node, "clock-frequency");
		70	if (prop && prop->value)
		71	clock_frequency = ((uint32_t ) prop->value);
		72	}
		73	}
		74	node = ofw_tree_find_peer_by_device_type(node, "cpu");
		75	}
		76
		77	CPU->arch.clock_frequency = clock_frequency;
		78	tick_init();
1917	jermar	79
		80	/*
		81	* Lock CPU stack in DTLB.
		82	*/
		83	uintptr_t base = ALIGN_DOWN(config.base, 1<<KERNEL_PAGE_WIDTH);
		84
		85	if (!overlaps((uintptr_t) CPU->stack, PAGE_SIZE, base, (1<<KERNEL_PAGE_WIDTH))) {
		86	/*
		87	* Kernel stack of this processor is not locked in DTLB.
		88	* First, demap any already existing mappings.
		89	* Second, create a locked mapping for it.
		90	*/
		91	dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, (uintptr_t) CPU->stack);
		92	dtlb_insert_mapping((uintptr_t) CPU->stack, KA2PA(CPU->stack), PAGESIZE_8K, true, true);
		93	}
		94
2009	jermar	95	/*
		96	* Set the D-cache active flag.
		97	* Needed for the D-cache to work.
		98	*/
		99	CPU->arch.dcache_active = 1;
640	jermar	100	}
		101
1899	jermar	102	/** Read version information from the current processor. */
640	jermar	103	void cpu_identify(void)
		104	{
		105	CPU->arch.ver.value = ver_read();
		106	}
		107
1899	jermar	108	/** Print version information for a processor.
		109	*
1903	jermar	110	* This function is called by the bootstrap processor.
		111	*
1899	jermar	112	* @param m Processor structure of the CPU for which version information is to be printed.
		113	*/
640	jermar	114	void cpu_print_report(cpu_t *m)
		115	{
		116	char manuf, impl;
		117
1903	jermar	118	switch (m->arch.ver.manuf) {
		119	case MANUF_FUJITSU:
640	jermar	120	manuf = "Fujitsu";
		121	break;
1903	jermar	122	case MANUF_ULTRASPARC:
640	jermar	123	manuf = "UltraSPARC";
		124	break;
1903	jermar	125	case MANUF_SUN:
640	jermar	126	manuf = "Sun";
		127	break;
1903	jermar	128	default:
640	jermar	129	manuf = "Unknown";
		130	break;
		131	}
		132
		133	switch (CPU->arch.ver.impl) {
1903	jermar	134	case IMPL_ULTRASPARCI:
640	jermar	135	impl = "UltraSPARC I";
		136	break;
1903	jermar	137	case IMPL_ULTRASPARCII:
640	jermar	138	impl = "UltraSPARC II";
		139	break;
1903	jermar	140	case IMPL_ULTRASPARCII_I:
640	jermar	141	impl = "UltraSPARC IIi";
		142	break;
1903	jermar	143	case IMPL_ULTRASPARCII_E:
640	jermar	144	impl = "UltraSPARC IIe";
		145	break;
1903	jermar	146	case IMPL_ULTRASPARCIII:
640	jermar	147	impl = "UltraSPARC III";
		148	break;
1903	jermar	149	case IMPL_ULTRASPARCIV_PLUS:
640	jermar	150	impl = "UltraSPARC IV+";
		151	break;
1903	jermar	152	case IMPL_SPARC64V:
640	jermar	153	impl = "SPARC 64V";
		154	break;
1903	jermar	155	default:
640	jermar	156	impl = "Unknown";
		157	break;
		158	}
		159
1881	jermar	160	printf("cpu%d: manuf=%s, impl=%s, mask=%d (%dMHz)\n",
1903	jermar	161	m->id, manuf, impl, m->arch.ver.mask, m->arch.clock_frequency/1000000);
640	jermar	162	}
1702	cejka	163
1731	jermar	164	/** @}
1702	cejka	165	*/

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(root)/trunk/kernel/arch/sparc64/src/cpu/cpu.c – Rev 2009