| /* |
| * Copyright (c) 2021 Carlo Caione <ccaione@baylibre.com> |
| * |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <zephyr/toolchain.h> |
| #include <zephyr/linker/sections.h> |
| #include <zephyr/arch/cpu.h> |
| |
| _ASM_FILE_PROLOGUE |
| |
| /* |
| * Switch TTBR0 |
| */ |
| |
| GTEXT(z_arm64_set_ttbr0) |
| SECTION_FUNC(TEXT, z_arm64_set_ttbr0) |
| |
| /* Disable all the caches */ |
| mrs x2, sctlr_el1 |
| mov_imm x1, (SCTLR_M_BIT | SCTLR_C_BIT | SCTLR_I_BIT) |
| and x1, x2, x1 |
| msr sctlr_el1, x1 |
| isb |
| |
| /* Switch the TTBR0 */ |
| msr ttbr0_el1, x0 |
| isb |
| |
| /* Invalidate the TLBs */ |
| tlbi vmalle1 |
| dsb sy |
| isb |
| |
| /* Restore the saved SCTLR_EL1 */ |
| msr sctlr_el1, x2 |
| isb |
| |
| ret |
