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
2049	jermar	47	/** Perform sparc64 specific initialization of the processor structure for the
		48	* current processor.
		49	*/
640	jermar	50	void cpu_arch_init(void)
		51	{
1899	jermar	52	ofw_tree_node_t *node;
		53	uint32_t mid;
		54	uint32_t clock_frequency = 0;
		55	upa_config_t upa_config;
		56
		57	upa_config.value = upa_config_read();
1903	jermar	58	CPU->arch.mid = upa_config.mid;
		59
1917	jermar	60	/*
		61	* Detect processor frequency.
		62	*/
1899	jermar	63	node = ofw_tree_find_child_by_device_type(ofw_tree_lookup("/"), "cpu");
		64	while (node) {
		65	ofw_tree_property_t *prop;
		66
		67	prop = ofw_tree_getprop(node, "upa-portid");
		68	if (prop && prop->value) {
		69	mid = ((uint32_t ) prop->value);
1903	jermar	70	if (mid == CPU->arch.mid) {
2049	jermar	71	prop = ofw_tree_getprop(node,
		72	"clock-frequency");
1899	jermar	73	if (prop && prop->value)
2049	jermar	74	clock_frequency = ((uint32_t )
		75	prop->value);
1899	jermar	76	}
		77	}
		78	node = ofw_tree_find_peer_by_device_type(node, "cpu");
		79	}
		80
		81	CPU->arch.clock_frequency = clock_frequency;
		82	tick_init();
1917	jermar	83
		84	/*
		85	* Lock CPU stack in DTLB.
		86	*/
2049	jermar	87	uintptr_t base = ALIGN_DOWN(config.base, 1 << KERNEL_PAGE_WIDTH);
1917	jermar	88
2049	jermar	89	if (!overlaps((uintptr_t) CPU->stack, PAGE_SIZE, base, (1 <<
		90	KERNEL_PAGE_WIDTH))) {
1917	jermar	91	/*
		92	* Kernel stack of this processor is not locked in DTLB.
		93	* First, demap any already existing mappings.
		94	* Second, create a locked mapping for it.
		95	*/
2049	jermar	96	dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, (uintptr_t)
		97	CPU->stack);
		98	dtlb_insert_mapping((uintptr_t) CPU->stack, KA2PA(CPU->stack),
		99	PAGESIZE_8K, true, true);
1917	jermar	100	}
640	jermar	101	}
		102
1899	jermar	103	/** Read version information from the current processor. */
640	jermar	104	void cpu_identify(void)
		105	{
		106	CPU->arch.ver.value = ver_read();
		107	}
		108
1899	jermar	109	/** Print version information for a processor.
		110	*
1903	jermar	111	* This function is called by the bootstrap processor.
		112	*
2049	jermar	113	* @param m Processor structure of the CPU for which version information is to
		114	* be printed.
1899	jermar	115	*/
640	jermar	116	void cpu_print_report(cpu_t *m)
		117	{
		118	char manuf, impl;
		119
1903	jermar	120	switch (m->arch.ver.manuf) {
		121	case MANUF_FUJITSU:
640	jermar	122	manuf = "Fujitsu";
		123	break;
1903	jermar	124	case MANUF_ULTRASPARC:
640	jermar	125	manuf = "UltraSPARC";
		126	break;
1903	jermar	127	case MANUF_SUN:
640	jermar	128	manuf = "Sun";
		129	break;
1903	jermar	130	default:
640	jermar	131	manuf = "Unknown";
		132	break;
		133	}
		134
		135	switch (CPU->arch.ver.impl) {
1903	jermar	136	case IMPL_ULTRASPARCI:
640	jermar	137	impl = "UltraSPARC I";
		138	break;
1903	jermar	139	case IMPL_ULTRASPARCII:
640	jermar	140	impl = "UltraSPARC II";
		141	break;
1903	jermar	142	case IMPL_ULTRASPARCII_I:
640	jermar	143	impl = "UltraSPARC IIi";
		144	break;
1903	jermar	145	case IMPL_ULTRASPARCII_E:
640	jermar	146	impl = "UltraSPARC IIe";
		147	break;
1903	jermar	148	case IMPL_ULTRASPARCIII:
640	jermar	149	impl = "UltraSPARC III";
		150	break;
1903	jermar	151	case IMPL_ULTRASPARCIV_PLUS:
640	jermar	152	impl = "UltraSPARC IV+";
		153	break;
1903	jermar	154	case IMPL_SPARC64V:
640	jermar	155	impl = "SPARC 64V";
		156	break;
1903	jermar	157	default:
640	jermar	158	impl = "Unknown";
		159	break;
		160	}
		161
2049	jermar	162	printf("cpu%d: manuf=%s, impl=%s, mask=%d (%dMHz)\n", m->id, manuf,
		163	impl, m->arch.ver.mask, m->arch.clock_frequency / 1000000);
640	jermar	164	}
1702	cejka	165
1731	jermar	166	/** @}
1702	cejka	167	*/

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(root)//trunk/kernel/arch/sparc64/src/cpu/cpu.c – Rev 2049