[84176f3] | 1 | /*
|
---|
| 2 | * Copyright (c) 2015 Petr Pavlu
|
---|
| 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 |
|
---|
| 29 | /** @addtogroup kernel_arm64
|
---|
| 30 | * @{
|
---|
| 31 | */
|
---|
| 32 | /** @file
|
---|
| 33 | * @brief CPU identification.
|
---|
| 34 | */
|
---|
| 35 |
|
---|
| 36 | #include <arch/regutils.h>
|
---|
| 37 | #include <cpu.h>
|
---|
| 38 | #include <typedefs.h>
|
---|
| 39 |
|
---|
| 40 | /** Decode implementer (vendor) name. */
|
---|
| 41 | static const char *implementer(uint32_t id)
|
---|
| 42 | {
|
---|
| 43 | switch (id) {
|
---|
| 44 | case 0x41:
|
---|
| 45 | return "ARM Limited";
|
---|
| 46 | case 0x42:
|
---|
| 47 | return "Broadcom Corporation";
|
---|
| 48 | case 0x43:
|
---|
| 49 | return "Cavium Inc.";
|
---|
| 50 | case 0x44:
|
---|
| 51 | return "Digital Equipment Corporation";
|
---|
| 52 | case 0x49:
|
---|
| 53 | return "Infineon Technologies AG";
|
---|
| 54 | case 0x4d:
|
---|
| 55 | return "Motorola or Freescale Semiconductor Inc.";
|
---|
| 56 | case 0x4e:
|
---|
| 57 | return "NVIDIA Corporation";
|
---|
| 58 | case 0x50:
|
---|
| 59 | return "Applied Micro Circuits Corporation";
|
---|
| 60 | case 0x51:
|
---|
| 61 | return "Qualcomm Inc.";
|
---|
| 62 | case 0x56:
|
---|
| 63 | return "Marvell International Ltd.";
|
---|
| 64 | case 0x69:
|
---|
| 65 | return "Intel Corporation";
|
---|
| 66 | }
|
---|
| 67 | return "Unknown implementer";
|
---|
| 68 | }
|
---|
| 69 |
|
---|
| 70 | /** Perform ARM64-specific tasks needed for CPU initialization. */
|
---|
| 71 | void cpu_arch_init(void)
|
---|
| 72 | {
|
---|
| 73 | }
|
---|
| 74 |
|
---|
| 75 | /** Retrieve processor identification and stores it to #CPU.arch */
|
---|
| 76 | void cpu_identify(void)
|
---|
| 77 | {
|
---|
| 78 | uint64_t midr = MIDR_EL1_read();
|
---|
| 79 |
|
---|
| 80 | CPU->arch.implementer =
|
---|
| 81 | (midr & MIDR_IMPLEMENTER_MASK) >> MIDR_IMPLEMENTER_SHIFT;
|
---|
| 82 | CPU->arch.variant = (midr & MIDR_VARIANT_MASK) >> MIDR_VARIANT_SHIFT;
|
---|
| 83 | CPU->arch.partnum = (midr & MIDR_PARTNUM_MASK) >> MIDR_PARTNUM_SHIFT;
|
---|
| 84 | CPU->arch.revision = (midr & MIDR_REVISION_MASK) >> MIDR_REVISION_SHIFT;
|
---|
| 85 | }
|
---|
| 86 |
|
---|
| 87 | /** Print CPU identification. */
|
---|
| 88 | void cpu_print_report(cpu_t *m)
|
---|
| 89 | {
|
---|
| 90 | printf("cpu%d: vendor=%s, variant=%" PRIx32 ", part number=%" PRIx32
|
---|
| 91 | ", revision=%" PRIx32 "\n",
|
---|
| 92 | m->id, implementer(m->arch.implementer), m->arch.variant,
|
---|
| 93 | m->arch.partnum, m->arch.revision);
|
---|
| 94 | }
|
---|
| 95 |
|
---|
| 96 | /** @}
|
---|
| 97 | */
|
---|