| /* |
| * Copyright (c) 2021 Telink Semiconductor |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #define NDS_MCACHE_CTL 0x7CA |
| #define NDS_MMISC_CTL 0x7D0 |
| |
| #include <zephyr/toolchain.h> |
| |
| .option push |
| .option norelax |
| .org 0x0 |
| |
| /* exports */ |
| GTEXT(entry) |
| |
| SECTION_FUNC(init, init) |
| entry: |
| |
| j start |
| |
| .org 0x20 |
| .word ('T'<<24 | 'L'<<16 | 'N'<<8 | 'K') |
| |
| .org 0x26 |
| .short (0x173B) |
| |
| .align 2 |
| |
| start: |
| |
| /* Enable I/D-Cache */ |
| csrr t0, NDS_MCACHE_CTL |
| ori t0, t0, 1 #/I-Cache |
| ori t0, t0, 2 #/D-Cache |
| csrw NDS_MCACHE_CTL, t0 |
| fence.i |
| |
| /* Enable misaligned access and non-blocking load */ |
| li t0, (1 << 8) | (1 << 6) |
| csrs NDS_MMISC_CTL, t0 |
| |
| _ZERO_AES: |
| lui t0, 0 |
| la t2, _AES_DATA_VMA_START |
| la t3, _AES_DATA_VMA_END |
| _ZERO_AES_BEGIN: |
| bleu t3, t2, _RETENTION_DATA_INIT |
| sw t0, 0(t2) |
| addi t2, t2, 4 |
| j _ZERO_AES_BEGIN |
| |
| _RETENTION_DATA_INIT: |
| la t1, _RETENTION_DATA_LMA_START |
| la t2, _RETENTION_DATA_VMA_START |
| la t3, _RETENTION_DATA_VMA_END |
| _RETENTION_DATA_INIT_BEGIN: |
| bleu t3, t2, _RAMCODE_INIT |
| lw t0, 0(t1) |
| sw t0, 0(t2) |
| addi t1, t1, 4 |
| addi t2, t2, 4 |
| j _RETENTION_DATA_INIT_BEGIN |
| |
| _RAMCODE_INIT: |
| la t1, _RAMCODE_LMA_START |
| la t2, _RAMCODE_VMA_START |
| la t3, _RAMCODE_VMA_END |
| _RAMCODE_INIT_BEGIN: |
| bleu t3, t2, _START |
| lw t0, 0(t1) |
| sw t0, 0(t2) |
| addi t1, t1, 4 |
| addi t2, t2, 4 |
| j _RAMCODE_INIT_BEGIN |
| |
| _START: |
| j __start |
| |
| .option pop |
