mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-22 19:23:07 +00:00
27 lines
738 B
C
27 lines
738 B
C
|
/* SPDX-License-Identifier: GPL-2.0+ */
|
||
|
|
/*
|
||
|
|
* Copyright 2018 NXP
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define MIDR_PARTNUM_CORTEX_A35 0xD04
|
||
|
|
#define MIDR_PARTNUM_CORTEX_A53 0xD03
|
||
|
|
#define MIDR_PARTNUM_CORTEX_A72 0xD08
|
||
|
|
#define MIDR_PARTNUM_SHIFT 0x4
|
||
|
|
#define MIDR_PARTNUM_MASK (0xFFF << 0x4)
|
||
|
|
|
||
|
|
static inline unsigned int read_midr(void)
|
||
|
|
{
|
||
|
|
unsigned long val;
|
||
|
|
|
||
|
|
asm volatile("mrs %0, midr_el1" : "=r" (val));
|
||
|
|
|
||
|
|
return val;
|
||
|
|
}
|
||
|
|
|
||
|
|
#define is_cortex_a35() (((read_midr() & MIDR_PARTNUM_MASK) >> \
|
||
|
|
MIDR_PARTNUM_SHIFT) == MIDR_PARTNUM_CORTEX_A35)
|
||
|
|
#define is_cortex_a53() (((read_midr() & MIDR_PARTNUM_MASK) >> \
|
||
|
|
MIDR_PARTNUM_SHIFT) == MIDR_PARTNUM_CORTEX_A53)
|
||
|
|
#define is_cortex_a72() (((read_midr() & MIDR_PARTNUM_MASK) >>\
|
||
|
|
MIDR_PARTNUM_SHIFT) == MIDR_PARTNUM_CORTEX_A72)
|