/*
* Copyright (c) 2005 Jakub Jermar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/** @addtogroup kernel_sparc64
* @{
*/
/** @file
*/
#include <arch/cpu_family.h>
#include <cpu.h>
#include <arch.h>
#include <genarch/ofw/ofw_tree.h>
#include <arch/drivers/tick.h>
#include <stdio.h>
#include <arch/cpu_node.h>
/**
* Finds out the clock frequency of the current CPU.
*
* @param node node representing the current CPU in the OFW tree
* @return clock frequency if "node" is the current CPU and no error
* occurs, -1 if "node" is not the current CPU or on error
*/
static int find_cpu_frequency(ofw_tree_node_t *node)
{
ofw_tree_property_t *prop;
uint32_t mid;
/* 'upa-portid' for US, 'portid' for US-III, 'cpuid' for US-IV */
prop = ofw_tree_getprop(node, "upa-portid");
if ((!prop) || (!prop->value))
prop = ofw_tree_getprop(node, "portid");
if ((!prop) || (!prop->value))
prop = ofw_tree_getprop(node, "cpuid");
if (prop && prop->value) {
mid = *((uint32_t *) prop->value);
if (mid == CPU->arch.mid) {
prop = ofw_tree_getprop(node, "clock-frequency");
if (prop && prop->value) {
return *((uint32_t *) prop->value);
}
}
}
return -1;
}
/** Perform sparc64 specific initialization of the processor structure for the
* current processor.
*/
void cpu_arch_init(void)
{
ofw_tree_node_t *node;
uint32_t clock_frequency = 0;
CPU->arch.mid = read_mid();
/*
* Detect processor frequency.
*/
if (is_us() || is_us_iii()) {
node = ofw_tree_find_child_by_device_type(cpus_parent(), "cpu");
while (node) {
int f = find_cpu_frequency(node);
if (f != -1)
clock_frequency = (uint32_t) f;
node = ofw_tree_find_peer_by_device_type(node, "cpu");
}
} else if (is_us_iv()) {
node = ofw_tree_find_child(cpus_parent(), "cmp");
while (node) {
int f;
f = find_cpu_frequency(
ofw_tree_find_child(node, "cpu@0"));
if (f != -1)
clock_frequency = (uint32_t) f;
f = find_cpu_frequency(
ofw_tree_find_child(node, "cpu@1"));
if (f != -1)
clock_frequency = (uint32_t) f;
node = ofw_tree_find_peer_by_name(node, "cmp");
}
}
CPU->arch.clock_frequency = clock_frequency;
tick_init();
}
/** Read version information from the current processor. */
void cpu_identify(void)
{
CPU->arch.ver.value = ver_read();
}
/** Print version information for a processor.
*
* This function is called by the bootstrap processor.
*
* @param m Processor structure of the CPU for which version information is to
* be printed.
*/
void cpu_print_report(cpu_t *m)
{
const char *manuf;
const char *impl;
switch (m->arch.ver.manuf) {
case MANUF_FUJITSU:
manuf = "Fujitsu";
break;
case MANUF_ULTRASPARC:
manuf = "UltraSPARC";
break;
case MANUF_SUN:
manuf = "Sun";
break;
default:
manuf = "Unknown";
break;
}
switch (CPU->arch.ver.impl) {
case IMPL_ULTRASPARCI:
impl = "UltraSPARC I";
break;
case IMPL_ULTRASPARCII:
impl = "UltraSPARC II";
break;
case IMPL_ULTRASPARCII_I:
impl = "UltraSPARC IIi";
break;
case IMPL_ULTRASPARCII_E:
impl = "UltraSPARC IIe";
break;
case IMPL_ULTRASPARCIII:
impl = "UltraSPARC III";
break;
case IMPL_ULTRASPARCIII_PLUS:
impl = "UltraSPARC III+";
break;
case IMPL_ULTRASPARCIII_I:
impl = "UltraSPARC IIIi";
break;
case IMPL_ULTRASPARCIV:
impl = "UltraSPARC IV";
break;
case IMPL_ULTRASPARCIV_PLUS:
impl = "UltraSPARC IV+";
break;
case IMPL_SPARC64V:
impl = "SPARC 64V";
break;
default:
impl = "Unknown";
break;
}
printf("cpu%d: manuf=%s, impl=%s, mask=%d (%d MHz)\n", m->id, manuf,
impl, m->arch.ver.mask, m->arch.clock_frequency / 1000000);
}
/** @}
*/