/*
* Copyright (c) 2007 Michal Kebrt
* 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 arm32
* @{
*/
/** @file
*/
#include <arch/cpu.h>
#include <cpu.h>
#include <arch.h>
#include <print.h>
/** Number of indexes left out in the #imp_data array */
#define IMP_DATA_START_OFFSET 0x40
/** Implementators (vendor) names */
static char * imp_data[] = {
"?", /* IMP_DATA_START_OFFSET */
"ARM Ltd", /* 0x41 */
"", /* 0x42 */
"", /* 0x43 */
"Digital Equipment Corporation", /* 0x44 */
"", "", "", "", "", "", "", "", "", "", "", /* 0x4f */
"", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", /* 0x5f */
"", "", "", "", "", "", "", "", "", /* 0x68 */
"Intel Corporation" /* 0x69 */
};
/** Length of the #imp_data array */
static int imp_data_length = sizeof(imp_data)/sizeof(char *);
/** Architecture names */
static char * arch_data[] = {
"?", /* 0x0 */
"4", /* 0x1 */
"4T", /* 0x2 */
"5", /* 0x3 */
"5T", /* 0x4 */
"5TE", /* 0x5 */
"5TEJ", /* 0x6 */
"6" /* 0x7 */
};
/** Length of the #arch_data array */
static int arch_data_length = sizeof(arch_data)/sizeof(char *);
/** Retrieves processor identification from CP15 register 0.
*
* @param cpu Structure for storing CPU identification.
*/
static void arch_cpu_identify(cpu_arch_t * cpu)
{
uint32_t ident;
asm volatile (
"mrc p15, 0, %0, c0, c0, 0 \n"
: "=r" (ident)
);
cpu->imp_num = ident >> 24;
cpu->variant_num = (ident << 8) >> 28;
cpu->arch_num = (ident << 12) >> 28;
cpu->prim_part_num = (ident << 16) >> 20;
cpu->rev_num = (ident << 28) >> 28;
}
void cpu_arch_init(void)
{
}
void cpu_identify(void)
{
arch_cpu_identify(&CPU->arch);
}
void cpu_print_report(cpu_t *m)
{
char * vendor = imp_data[0];
char * architecture = arch_data[0];
cpu_arch_t * cpu_arch = &m->arch;
if ( (cpu_arch->imp_num) > 0 && (cpu_arch->imp_num < (imp_data_length + IMP_DATA_START_OFFSET)) ) {
vendor = imp_data[cpu_arch->imp_num - IMP_DATA_START_OFFSET];
}
if ( (cpu_arch->arch_num) > 0 && (cpu_arch->arch_num < arch_data_length) ) {
architecture = arch_data[cpu_arch->arch_num];
}
printf("vendor: %s, architecture: ARM %s, part number: %x, variant: %x, revision: %x\n",
vendor, architecture, cpu_arch->prim_part_num, cpu_arch->variant_num, cpu_arch->rev_num);
}
/** @}
*/