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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:13:47 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 09:13:47 +0000 |
commit | 102b0d2daa97dae68d3eed54d8fe37a9cc38a892 (patch) | |
tree | bcf648efac40ca6139842707f0eba5a4496a6dd2 /plat/arm/common/arm_bl2u_setup.c | |
parent | Initial commit. (diff) | |
download | arm-trusted-firmware-upstream/2.8.0+dfsg.tar.xz arm-trusted-firmware-upstream/2.8.0+dfsg.zip |
Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'plat/arm/common/arm_bl2u_setup.c')
-rw-r--r-- | plat/arm/common/arm_bl2u_setup.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/plat/arm/common/arm_bl2u_setup.c b/plat/arm/common/arm_bl2u_setup.c new file mode 100644 index 0000000..3614c7d --- /dev/null +++ b/plat/arm/common/arm_bl2u_setup.c @@ -0,0 +1,97 @@ +/* + * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +#include <assert.h> +#include <string.h> + +#include <platform_def.h> + +#include <arch_helpers.h> +#include <common/bl_common.h> +#include <drivers/generic_delay_timer.h> +#include <plat/arm/common/plat_arm.h> +#include <plat/common/platform.h> + +/* Weak definitions may be overridden in specific ARM standard platform */ +#pragma weak bl2u_platform_setup +#pragma weak bl2u_early_platform_setup +#pragma weak bl2u_plat_arch_setup + +#define MAP_BL2U_TOTAL MAP_REGION_FLAT( \ + BL2U_BASE, \ + BL2U_LIMIT - BL2U_BASE, \ + MT_MEMORY | MT_RW | MT_SECURE) + +/* + * Perform ARM standard platform setup for BL2U + */ +void arm_bl2u_platform_setup(void) +{ + /* Initialize the secure environment */ + plat_arm_security_setup(); +} + +void bl2u_platform_setup(void) +{ + arm_bl2u_platform_setup(); +} + +void arm_bl2u_early_platform_setup(struct meminfo *mem_layout, void *plat_info) +{ + /* Initialize the console to provide early debug support */ + arm_console_boot_init(); + + generic_delay_timer_init(); +} + +/******************************************************************************* + * BL1 can pass platform dependent information to BL2U in x1. + * In case of ARM CSS platforms x1 contains SCP_BL2U image info. + * In case of ARM FVP platforms x1 is not used. + * In both cases, x0 contains the extents of the memory available to BL2U + ******************************************************************************/ +void bl2u_early_platform_setup(struct meminfo *mem_layout, void *plat_info) +{ + arm_bl2u_early_platform_setup(mem_layout, plat_info); +} + +/******************************************************************************* + * Perform the very early platform specific architectural setup here. At the + * moment this is only initializes the mmu in a quick and dirty way. + * The memory that is used by BL2U is only mapped. + ******************************************************************************/ +void arm_bl2u_plat_arch_setup(void) +{ + +#if USE_COHERENT_MEM + /* Ensure ARM platforms dont use coherent memory in BL2U */ + assert((BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE) == 0U); +#endif + + const mmap_region_t bl_regions[] = { + MAP_BL2U_TOTAL, + ARM_MAP_BL_RO, +#if USE_ROMLIB + ARM_MAP_ROMLIB_CODE, + ARM_MAP_ROMLIB_DATA, +#endif + {0} + }; + + setup_page_tables(bl_regions, plat_arm_get_mmap()); + +#ifdef __aarch64__ + enable_mmu_el1(0); +#else + enable_mmu_svc_mon(0); +#endif + arm_setup_romlib(); +} + +void bl2u_plat_arch_setup(void) +{ + arm_bl2u_plat_arch_setup(); +} |