diff options
Diffstat (limited to 'plat/qemu/common/qemu_common.c')
| -rw-r--r-- | plat/qemu/common/qemu_common.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/plat/qemu/common/qemu_common.c b/plat/qemu/common/qemu_common.c new file mode 100644 index 0000000..0c184f4 --- /dev/null +++ b/plat/qemu/common/qemu_common.c @@ -0,0 +1,169 @@ + +/* + * Copyright (c) 2015-2022, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <platform_def.h> + +#include <arch_helpers.h> +#include <common/bl_common.h> +#include <lib/xlat_tables/xlat_tables_v2.h> + +#include <plat/common/platform.h> +#include "qemu_private.h" + +#define MAP_DEVICE0 MAP_REGION_FLAT(DEVICE0_BASE, \ + DEVICE0_SIZE, \ + MT_DEVICE | MT_RW | MT_SECURE) + +#ifdef DEVICE1_BASE +#define MAP_DEVICE1 MAP_REGION_FLAT(DEVICE1_BASE, \ + DEVICE1_SIZE, \ + MT_DEVICE | MT_RW | MT_SECURE) +#endif + +#ifdef DEVICE2_BASE +#define MAP_DEVICE2 MAP_REGION_FLAT(DEVICE2_BASE, \ + DEVICE2_SIZE, \ + MT_DEVICE | MT_RW | MT_SECURE) +#endif + +#define MAP_SHARED_RAM MAP_REGION_FLAT(SHARED_RAM_BASE, \ + SHARED_RAM_SIZE, \ + MT_DEVICE | MT_RW | MT_SECURE) + +#define MAP_BL32_MEM MAP_REGION_FLAT(BL32_MEM_BASE, BL32_MEM_SIZE, \ + MT_MEMORY | MT_RW | MT_SECURE) + +#define MAP_NS_DRAM0 MAP_REGION_FLAT(NS_DRAM0_BASE, NS_DRAM0_SIZE, \ + MT_MEMORY | MT_RW | MT_NS) + +#define MAP_FLASH0 MAP_REGION_FLAT(QEMU_FLASH0_BASE, QEMU_FLASH0_SIZE, \ + MT_MEMORY | MT_RO | MT_SECURE) + +#define MAP_FLASH1 MAP_REGION_FLAT(QEMU_FLASH1_BASE, QEMU_FLASH1_SIZE, \ + MT_MEMORY | MT_RO | MT_SECURE) + +/* + * Table of regions for various BL stages to map using the MMU. + * This doesn't include TZRAM as the 'mem_layout' argument passed to + * arm_configure_mmu_elx() will give the available subset of that, + */ +#ifdef IMAGE_BL1 +static const mmap_region_t plat_qemu_mmap[] = { + MAP_FLASH0, + MAP_FLASH1, + MAP_SHARED_RAM, + MAP_DEVICE0, +#ifdef MAP_DEVICE1 + MAP_DEVICE1, +#endif +#ifdef MAP_DEVICE2 + MAP_DEVICE2, +#endif + {0} +}; +#endif +#ifdef IMAGE_BL2 +static const mmap_region_t plat_qemu_mmap[] = { + MAP_FLASH0, + MAP_FLASH1, + MAP_SHARED_RAM, + MAP_DEVICE0, +#ifdef MAP_DEVICE1 + MAP_DEVICE1, +#endif +#ifdef MAP_DEVICE2 + MAP_DEVICE2, +#endif + MAP_NS_DRAM0, +#if SPM_MM + QEMU_SP_IMAGE_MMAP, +#else + MAP_BL32_MEM, +#endif + {0} +}; +#endif +#ifdef IMAGE_BL31 +static const mmap_region_t plat_qemu_mmap[] = { + MAP_SHARED_RAM, + MAP_DEVICE0, +#ifdef MAP_DEVICE1 + MAP_DEVICE1, +#endif +#ifdef MAP_DEVICE2 + MAP_DEVICE2, +#endif +#if SPM_MM + MAP_NS_DRAM0, + QEMU_SPM_BUF_EL3_MMAP, +#else + MAP_BL32_MEM, +#endif + {0} +}; +#endif +#ifdef IMAGE_BL32 +static const mmap_region_t plat_qemu_mmap[] = { + MAP_SHARED_RAM, + MAP_DEVICE0, +#ifdef MAP_DEVICE1 + MAP_DEVICE1, +#endif +#ifdef MAP_DEVICE2 + MAP_DEVICE2, +#endif + {0} +}; +#endif + +/******************************************************************************* + * Macro generating the code for the function setting up the pagetables as per + * the platform memory map & initialize the mmu, for the given exception level + ******************************************************************************/ + +#define DEFINE_CONFIGURE_MMU_EL(_el) \ + void qemu_configure_mmu_##_el(unsigned long total_base, \ + unsigned long total_size, \ + unsigned long code_start, \ + unsigned long code_limit, \ + unsigned long ro_start, \ + unsigned long ro_limit, \ + unsigned long coh_start, \ + unsigned long coh_limit) \ + { \ + mmap_add_region(total_base, total_base, \ + total_size, \ + MT_MEMORY | MT_RW | MT_SECURE); \ + mmap_add_region(code_start, code_start, \ + code_limit - code_start, \ + MT_CODE | MT_SECURE); \ + mmap_add_region(ro_start, ro_start, \ + ro_limit - ro_start, \ + MT_RO_DATA | MT_SECURE); \ + mmap_add_region(coh_start, coh_start, \ + coh_limit - coh_start, \ + MT_DEVICE | MT_RW | MT_SECURE); \ + mmap_add(plat_qemu_mmap); \ + init_xlat_tables(); \ + \ + enable_mmu_##_el(0); \ + } + +/* Define EL1 and EL3 variants of the function initialising the MMU */ +#ifdef __aarch64__ +DEFINE_CONFIGURE_MMU_EL(el1) +DEFINE_CONFIGURE_MMU_EL(el3) +#else +DEFINE_CONFIGURE_MMU_EL(svc_mon) +#endif + +#if MEASURED_BOOT || TRUSTED_BOARD_BOOT +int plat_get_mbedtls_heap(void **heap_addr, size_t *heap_size) +{ + return get_mbedtls_heap_helper(heap_addr, heap_size); +} +#endif |