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640 jermar 1 
/*
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 * Copyright (C) 2005 Jakub Jermar
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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1731 jermar 29 
/** @addtogroup sparc64
1702 cejka 30 
 * @{
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 */
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/** @file
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 */
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1881 jermar 35 
#include <arch/asm.h>
640 jermar 36 
#include <cpu.h>
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#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>
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#include <arch/types.h>
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#include <arch/drivers/tick.h>
1917 jermar 43 
#include <arch/mm/page.h>
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#include <arch/mm/tlb.h>
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#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)
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{
1899 jermar 50 
	ofw_tree_node_t *node;
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	uint32_t mid;
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	uint32_t clock_frequency = 0;
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	upa_config_t upa_config;
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	upa_config.value = upa_config_read();
1903 jermar 56 
	CPU->arch.mid = upa_config.mid;
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1917 jermar 58 
	/*
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	 * Detect processor frequency.
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	 */
1899 jermar 61 
	node = ofw_tree_find_child_by_device_type(ofw_tree_lookup("/"), "cpu");
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	while (node) {
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		ofw_tree_property_t *prop;
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		prop = ofw_tree_getprop(node, "upa-portid");
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		if (prop && prop->value) {
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			mid = *((uint32_t *) prop->value);
1903 jermar 68 
			if (mid == CPU->arch.mid) {
1899 jermar 69 
				prop = ofw_tree_getprop(node, "clock-frequency");
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				if (prop && prop->value)
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					clock_frequency = *((uint32_t *) prop->value);
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			}
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		}
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		node = ofw_tree_find_peer_by_device_type(node, "cpu");
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	}
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	CPU->arch.clock_frequency = clock_frequency;
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	tick_init();
1917 jermar 79 
 
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	/*
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	 * Lock CPU stack in DTLB.
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	 */
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	uintptr_t base = ALIGN_DOWN(config.base, 1<<KERNEL_PAGE_WIDTH);
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	if (!overlaps((uintptr_t) CPU->stack, PAGE_SIZE, base, (1<<KERNEL_PAGE_WIDTH))) {
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		/*
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		 * Kernel stack of this processor is not locked in DTLB.
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		 * First, demap any already existing mappings.
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		 * Second, create a locked mapping for it.
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		 */
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		dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, (uintptr_t) CPU->stack);
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		dtlb_insert_mapping((uintptr_t) CPU->stack, KA2PA(CPU->stack), PAGESIZE_8K, true, true);
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	}
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640 jermar 95 
}
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1899 jermar 97 
/** Read version information from the current processor. */
640 jermar 98 
void cpu_identify(void)
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{
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	CPU->arch.ver.value = ver_read();
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}
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1899 jermar 103 
/** Print version information for a processor.
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 *
1903 jermar 105 
 * This function is called by the bootstrap processor.
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 *
1899 jermar 107 
 * @param m Processor structure of the CPU for which version information is to be printed.
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 */
640 jermar 109 
void cpu_print_report(cpu_t *m)
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{
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	char *manuf, *impl;
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1903 jermar 113 
	switch (m->arch.ver.manuf) {
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	case MANUF_FUJITSU:
640 jermar 115 
		manuf = "Fujitsu";
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		break;
1903 jermar 117 
	case MANUF_ULTRASPARC:
640 jermar 118 
		manuf = "UltraSPARC";
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		break;
1903 jermar 120 
	case MANUF_SUN:
640 jermar 121 
	    	manuf = "Sun";
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		break;
1903 jermar 123 
	default:
640 jermar 124 
		manuf = "Unknown";
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		break;
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	}
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	switch (CPU->arch.ver.impl) {
1903 jermar 129 
	case IMPL_ULTRASPARCI:
640 jermar 130 
		impl = "UltraSPARC I";
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		break;
1903 jermar 132 
	case IMPL_ULTRASPARCII:
640 jermar 133 
		impl = "UltraSPARC II";
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		break;
1903 jermar 135 
	case IMPL_ULTRASPARCII_I:
640 jermar 136 
		impl = "UltraSPARC IIi";
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		break;
1903 jermar 138 
	case IMPL_ULTRASPARCII_E:
640 jermar 139 
		impl = "UltraSPARC IIe";
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		break;
1903 jermar 141 
	case IMPL_ULTRASPARCIII:
640 jermar 142 
		impl = "UltraSPARC III";
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		break;
1903 jermar 144 
	case IMPL_ULTRASPARCIV_PLUS:
640 jermar 145 
		impl = "UltraSPARC IV+";
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		break;
1903 jermar 147 
	case IMPL_SPARC64V:
640 jermar 148 
		impl = "SPARC 64V";
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		break;
1903 jermar 150 
	default:
640 jermar 151 
		impl = "Unknown";
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		break;
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	}
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1881 jermar 155 
	printf("cpu%d: manuf=%s, impl=%s, mask=%d (%dMHz)\n",
1903 jermar 156 
		m->id, manuf, impl, m->arch.ver.mask, m->arch.clock_frequency/1000000);
640 jermar 157 
}
1702 cejka 158 
 
1731 jermar 159 
/** @}
1702 cejka 160 
 */