| /* |
| * Copyright (c) 2013-2014, ARM Limited and Contributors. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * |
| * Redistributions of source code must retain the above copyright notice, this |
| * list of conditions and the following disclaimer. |
| * |
| * Redistributions in binary form must reproduce the above copyright notice, |
| * this list of conditions and the following disclaimer in the documentation |
| * and/or other materials provided with the distribution. |
| * |
| * Neither the name of ARM nor the names of its contributors may be used |
| * to endorse or promote products derived from this software without specific |
| * prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <arch_helpers.h> |
| #include <assert.h> |
| #include <bl_common.h> |
| #include <console.h> |
| #include <platform.h> |
| #include <platform_def.h> |
| #include <string.h> |
| #include "fvp_def.h" |
| #include "fvp_private.h" |
| |
| /******************************************************************************* |
| * Declarations of linker defined symbols which will help us find the layout |
| * of trusted SRAM |
| ******************************************************************************/ |
| extern unsigned long __RO_START__; |
| extern unsigned long __RO_END__; |
| |
| extern unsigned long __COHERENT_RAM_START__; |
| extern unsigned long __COHERENT_RAM_END__; |
| |
| /* |
| * The next 2 constants identify the extents of the code & RO data region. |
| * These addresses are used by the MMU setup code and therefore they must be |
| * page-aligned. It is the responsibility of the linker script to ensure that |
| * __RO_START__ and __RO_END__ linker symbols refer to page-aligned addresses. |
| */ |
| #define BL2_RO_BASE (unsigned long)(&__RO_START__) |
| #define BL2_RO_LIMIT (unsigned long)(&__RO_END__) |
| |
| /* |
| * The next 2 constants identify the extents of the coherent memory region. |
| * These addresses are used by the MMU setup code and therefore they must be |
| * page-aligned. It is the responsibility of the linker script to ensure that |
| * __COHERENT_RAM_START__ and __COHERENT_RAM_END__ linker symbols refer to |
| * page-aligned addresses. |
| */ |
| #define BL2_COHERENT_RAM_BASE (unsigned long)(&__COHERENT_RAM_START__) |
| #define BL2_COHERENT_RAM_LIMIT (unsigned long)(&__COHERENT_RAM_END__) |
| |
| /* Data structure which holds the extents of the trusted SRAM for BL2 */ |
| static meminfo_t bl2_tzram_layout |
| __attribute__ ((aligned(PLATFORM_CACHE_LINE_SIZE), |
| section("tzfw_coherent_mem"))); |
| |
| /* Assert that BL3-1 parameters fit in shared memory */ |
| CASSERT((PARAMS_BASE + sizeof(bl2_to_bl31_params_mem_t)) < |
| (FVP_SHARED_MEM_BASE + FVP_SHARED_MEM_SIZE), |
| assert_bl31_params_do_not_fit_in_shared_memory); |
| |
| /******************************************************************************* |
| * Reference to structures which holds the arguments which need to be passed |
| * to BL31 |
| ******************************************************************************/ |
| static bl31_params_t *bl2_to_bl31_params; |
| static entry_point_info_t *bl31_ep_info; |
| |
| meminfo_t *bl2_plat_sec_mem_layout(void) |
| { |
| return &bl2_tzram_layout; |
| } |
| |
| /******************************************************************************* |
| * This function assigns a pointer to the memory that the platform has kept |
| * aside to pass platform specific and trusted firmware related information |
| * to BL31. This memory is allocated by allocating memory to |
| * bl2_to_bl31_params_mem_t structure which is a superset of all the |
| * structure whose information is passed to BL31 |
| * NOTE: This function should be called only once and should be done |
| * before generating params to BL31 |
| ******************************************************************************/ |
| bl31_params_t *bl2_plat_get_bl31_params(void) |
| { |
| bl2_to_bl31_params_mem_t *bl31_params_mem; |
| |
| /* |
| * Allocate the memory for all the arguments that needs to |
| * be passed to BL31 |
| */ |
| bl31_params_mem = (bl2_to_bl31_params_mem_t *)PARAMS_BASE; |
| memset((void *)PARAMS_BASE, 0, sizeof(bl2_to_bl31_params_mem_t)); |
| |
| /* Assign memory for TF related information */ |
| bl2_to_bl31_params = &bl31_params_mem->bl31_params; |
| SET_PARAM_HEAD(bl2_to_bl31_params, PARAM_BL31, VERSION_1, 0); |
| |
| /* Fill BL31 related information */ |
| bl31_ep_info = &bl31_params_mem->bl31_ep_info; |
| bl2_to_bl31_params->bl31_image_info = &bl31_params_mem->bl31_image_info; |
| SET_PARAM_HEAD(bl2_to_bl31_params->bl31_image_info, PARAM_IMAGE_BINARY, |
| VERSION_1, 0); |
| |
| /* Fill BL32 related information if it exists */ |
| if (BL32_BASE) { |
| bl2_to_bl31_params->bl32_ep_info = |
| &bl31_params_mem->bl32_ep_info; |
| SET_PARAM_HEAD(bl2_to_bl31_params->bl32_ep_info, |
| PARAM_EP, VERSION_1, 0); |
| bl2_to_bl31_params->bl32_image_info = |
| &bl31_params_mem->bl32_image_info; |
| SET_PARAM_HEAD(bl2_to_bl31_params->bl32_image_info, |
| PARAM_IMAGE_BINARY, |
| VERSION_1, 0); |
| } |
| |
| /* Fill BL33 related information */ |
| bl2_to_bl31_params->bl33_ep_info = &bl31_params_mem->bl33_ep_info; |
| SET_PARAM_HEAD(bl2_to_bl31_params->bl33_ep_info, |
| PARAM_EP, VERSION_1, 0); |
| bl2_to_bl31_params->bl33_image_info = &bl31_params_mem->bl33_image_info; |
| SET_PARAM_HEAD(bl2_to_bl31_params->bl33_image_info, PARAM_IMAGE_BINARY, |
| VERSION_1, 0); |
| |
| return bl2_to_bl31_params; |
| } |
| |
| |
| /******************************************************************************* |
| * This function returns a pointer to the shared memory that the platform |
| * has kept to point to entry point information of BL31 to BL2 |
| ******************************************************************************/ |
| struct entry_point_info *bl2_plat_get_bl31_ep_info(void) |
| { |
| #if DEBUG |
| bl31_ep_info->args.arg1 = FVP_BL31_PLAT_PARAM_VAL; |
| #endif |
| return bl31_ep_info; |
| } |
| |
| |
| /******************************************************************************* |
| * BL1 has passed the extents of the trusted SRAM that should be visible to BL2 |
| * in x0. This memory layout is sitting at the base of the free trusted SRAM. |
| * Copy it to a safe loaction before its reclaimed by later BL2 functionality. |
| ******************************************************************************/ |
| void bl2_early_platform_setup(meminfo_t *mem_layout) |
| { |
| /* Initialize the console to provide early debug support */ |
| console_init(PL011_UART0_BASE, PL011_UART0_CLK_IN_HZ, PL011_BAUDRATE); |
| |
| /* Setup the BL2 memory layout */ |
| bl2_tzram_layout = *mem_layout; |
| |
| /* Initialize the platform config for future decision making */ |
| fvp_config_setup(); |
| } |
| |
| /******************************************************************************* |
| * Perform platform specific setup. For now just initialize the memory location |
| * to use for passing arguments to BL31. |
| ******************************************************************************/ |
| void bl2_platform_setup(void) |
| { |
| /* |
| * Do initial security configuration to allow DRAM/device access. On |
| * Base FVP only DRAM security is programmable (via TrustZone), but |
| * other platforms might have more programmable security devices |
| * present. |
| */ |
| fvp_security_setup(); |
| |
| /* Initialise the IO layer and register platform IO devices */ |
| fvp_io_setup(); |
| } |
| |
| /* Flush the TF params and the TF plat params */ |
| void bl2_plat_flush_bl31_params(void) |
| { |
| flush_dcache_range((unsigned long)PARAMS_BASE, \ |
| sizeof(bl2_to_bl31_params_mem_t)); |
| } |
| |
| |
| /******************************************************************************* |
| * Perform the very early platform specific architectural setup here. At the |
| * moment this is only intializes the mmu in a quick and dirty way. |
| ******************************************************************************/ |
| void bl2_plat_arch_setup(void) |
| { |
| fvp_configure_mmu_el1(bl2_tzram_layout.total_base, |
| bl2_tzram_layout.total_size, |
| BL2_RO_BASE, |
| BL2_RO_LIMIT, |
| BL2_COHERENT_RAM_BASE, |
| BL2_COHERENT_RAM_LIMIT); |
| } |
| |
| /******************************************************************************* |
| * Before calling this function BL31 is loaded in memory and its entrypoint |
| * is set by load_image. This is a placeholder for the platform to change |
| * the entrypoint of BL31 and set SPSR and security state. |
| * On FVP we are only setting the security state, entrypoint |
| ******************************************************************************/ |
| void bl2_plat_set_bl31_ep_info(image_info_t *bl31_image_info, |
| entry_point_info_t *bl31_ep_info) |
| { |
| SET_SECURITY_STATE(bl31_ep_info->h.attr, SECURE); |
| bl31_ep_info->spsr = SPSR_64(MODE_EL3, MODE_SP_ELX, |
| DISABLE_ALL_EXCEPTIONS); |
| } |
| |
| |
| /******************************************************************************* |
| * Before calling this function BL32 is loaded in memory and its entrypoint |
| * is set by load_image. This is a placeholder for the platform to change |
| * the entrypoint of BL32 and set SPSR and security state. |
| * On FVP we are only setting the security state, entrypoint |
| ******************************************************************************/ |
| void bl2_plat_set_bl32_ep_info(image_info_t *bl32_image_info, |
| entry_point_info_t *bl32_ep_info) |
| { |
| SET_SECURITY_STATE(bl32_ep_info->h.attr, SECURE); |
| bl32_ep_info->spsr = fvp_get_spsr_for_bl32_entry(); |
| } |
| |
| /******************************************************************************* |
| * Before calling this function BL33 is loaded in memory and its entrypoint |
| * is set by load_image. This is a placeholder for the platform to change |
| * the entrypoint of BL33 and set SPSR and security state. |
| * On FVP we are only setting the security state, entrypoint |
| ******************************************************************************/ |
| void bl2_plat_set_bl33_ep_info(image_info_t *image, |
| entry_point_info_t *bl33_ep_info) |
| { |
| SET_SECURITY_STATE(bl33_ep_info->h.attr, NON_SECURE); |
| bl33_ep_info->spsr = fvp_get_spsr_for_bl33_entry(); |
| } |
| |
| |
| /******************************************************************************* |
| * Populate the extents of memory available for loading BL32 |
| ******************************************************************************/ |
| void bl2_plat_get_bl32_meminfo(meminfo_t *bl32_meminfo) |
| { |
| /* |
| * Populate the extents of memory available for loading BL32. |
| */ |
| bl32_meminfo->total_base = BL32_BASE; |
| bl32_meminfo->free_base = BL32_BASE; |
| bl32_meminfo->total_size = |
| (TSP_SEC_MEM_BASE + TSP_SEC_MEM_SIZE) - BL32_BASE; |
| bl32_meminfo->free_size = |
| (TSP_SEC_MEM_BASE + TSP_SEC_MEM_SIZE) - BL32_BASE; |
| } |
| |
| |
| /******************************************************************************* |
| * Populate the extents of memory available for loading BL33 |
| ******************************************************************************/ |
| void bl2_plat_get_bl33_meminfo(meminfo_t *bl33_meminfo) |
| { |
| bl33_meminfo->total_base = DRAM_BASE; |
| bl33_meminfo->total_size = DRAM_SIZE - DRAM1_SEC_SIZE; |
| bl33_meminfo->free_base = DRAM_BASE; |
| bl33_meminfo->free_size = DRAM_SIZE - DRAM1_SEC_SIZE; |
| } |