| /* |
| * Copyright (c) 2021 Antony Pavlov <antonynpavlov@gmail.com> |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <zephyr/toolchain.h> |
| #include <zephyr/linker/sections.h> |
| #include <mips/regdef.h> |
| #include <mips/mipsregs.h> |
| |
| GTEXT(__initialize) |
| GTEXT(__stack) |
| GTEXT(_PrepC) |
| |
| /* |
| * Remainder of asm-land initialization code before we can jump into |
| * the C domain. |
| */ |
| SECTION_FUNC(TEXT, __initialize) |
| .set noreorder |
| |
| mtc0 zero, CP0_CAUSE |
| ehb |
| |
| mfc0 k0, CP0_STATUS |
| li k1, ~(ST0_ERL | ST0_IE) |
| and k0, k1 |
| mtc0 k0, CP0_STATUS |
| ehb |
| |
| #ifdef CONFIG_INIT_STACKS |
| /* Pre-populate all bytes in z_interrupt_stacks with 0xAA */ |
| la t0, z_interrupt_stacks |
| li t1, CONFIG_ISR_STACK_SIZE |
| add t1, t1, t0 |
| |
| /* Populate z_interrupt_stacks with 0xaaaaaaaa */ |
| li t2, 0xaaaaaaaa |
| aa_loop: |
| sw t2, 0(t0) |
| addi t0, t0, 4 |
| blt t0, t1, aa_loop |
| nop /* delay slot */ |
| #endif |
| |
| /* |
| * Setup stack pointer. |
| */ |
| la sp, __stack |
| |
| /* |
| * Jump into C domain. |
| */ |
| la v0, _PrepC |
| jal v0 |
| nop /* delay slot */ |
