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/*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <sbi/riscv_asm.h>
#include "fdt_reset_thead.h"
/*
* csrrs rd, csr, rs1
* |31 20|19 15|14 12|11 7|6 0|
* csr rs1 010 rd 1110011
*/
#define CSR_STUB addi x0, x0, 0
.option norvc
.align 3
.global __fdt_reset_thead_csrr
__fdt_reset_thead_csrr:
csrrs a0, 0, x0
ret
.align 3
.global __thead_pre_start_warm
__thead_pre_start_warm:
/*
* Clear L1 cache & BTB & BHT ...
*/
li t1, 0x70013
csrw 0x7c2, t1
fence rw,rw
lla t1, custom_csr
.global __reset_thead_csr_stub
__reset_thead_csr_stub:
.rept MAX_CUSTOM_CSR
REG_L t2, 8(t1)
CSR_STUB
addi t1, t1, 16
.endr
/*
* Clear L1 cache & BTB & BHT ...
*/
li t1, 0x70013
csrw 0x7c2, t1
fence rw,rw
j _start_warm
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