blob: ffec664257068bd0022983d000032988b3846941 [file] [log] [blame]
/*
* Copyright (c) 2015-2017, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch_helpers.h>
#include <arm_def.h>
#include <assert.h>
#include <bl_common.h>
#include <console.h>
#include <debug.h>
#include <desc_image_load.h>
#include <plat_arm.h>
#include <platform_def.h>
#include <string.h>
#include <utils.h>
/* Data structure which holds the extents of the trusted SRAM for BL2 */
static meminfo_t bl2_tzram_layout __aligned(CACHE_WRITEBACK_GRANULE);
/* Weak definitions may be overridden in specific ARM standard platform */
#pragma weak bl2_early_platform_setup
#pragma weak bl2_platform_setup
#pragma weak bl2_plat_arch_setup
#pragma weak bl2_plat_sec_mem_layout
#if LOAD_IMAGE_V2
#pragma weak bl2_plat_handle_post_image_load
#else /* LOAD_IMAGE_V2 */
/*******************************************************************************
* This structure represents the superset of information that is passed to
* BL31, e.g. while passing control to it from BL2, bl31_params
* and other platform specific params
******************************************************************************/
typedef struct bl2_to_bl31_params_mem {
bl31_params_t bl31_params;
image_info_t bl31_image_info;
image_info_t bl32_image_info;
image_info_t bl33_image_info;
entry_point_info_t bl33_ep_info;
entry_point_info_t bl32_ep_info;
entry_point_info_t bl31_ep_info;
} bl2_to_bl31_params_mem_t;
static bl2_to_bl31_params_mem_t bl31_params_mem;
/* Weak definitions may be overridden in specific ARM standard platform */
#pragma weak bl2_plat_get_bl31_params
#pragma weak bl2_plat_get_bl31_ep_info
#pragma weak bl2_plat_flush_bl31_params
#pragma weak bl2_plat_set_bl31_ep_info
#pragma weak bl2_plat_get_scp_bl2_meminfo
#pragma weak bl2_plat_get_bl32_meminfo
#pragma weak bl2_plat_set_bl32_ep_info
#pragma weak bl2_plat_get_bl33_meminfo
#pragma weak bl2_plat_set_bl33_ep_info
#if ARM_BL31_IN_DRAM
meminfo_t *bl2_plat_sec_mem_layout(void)
{
static meminfo_t bl2_dram_layout
__aligned(CACHE_WRITEBACK_GRANULE) = {
.total_base = BL31_BASE,
.total_size = (ARM_AP_TZC_DRAM1_BASE +
ARM_AP_TZC_DRAM1_SIZE) - BL31_BASE,
.free_base = BL31_BASE,
.free_size = (ARM_AP_TZC_DRAM1_BASE +
ARM_AP_TZC_DRAM1_SIZE) - BL31_BASE
};
return &bl2_dram_layout;
}
#else
meminfo_t *bl2_plat_sec_mem_layout(void)
{
return &bl2_tzram_layout;
}
#endif /* ARM_BL31_IN_DRAM */
/*******************************************************************************
* 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)
{
bl31_params_t *bl2_to_bl31_params;
/*
* Initialise the memory for all the arguments that needs to
* be passed to BL31
*/
zeromem(&bl31_params_mem, 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 */
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 */
#ifdef 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);
#endif /* BL32_BASE */
/* 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);
/* BL33 expects to receive the primary CPU MPID (through x0) */
bl2_to_bl31_params->bl33_ep_info->args.arg0 = 0xffff & read_mpidr();
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;
}
/* Flush the TF params and the TF plat params */
void bl2_plat_flush_bl31_params(void)
{
flush_dcache_range((unsigned long)&bl31_params_mem,
sizeof(bl2_to_bl31_params_mem_t));
}
/*******************************************************************************
* 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_params_mem.bl31_ep_info.args.arg1 = ARM_BL31_PLAT_PARAM_VAL;
#endif
return &bl31_params_mem.bl31_ep_info;
}
#endif /* LOAD_IMAGE_V2 */
/*******************************************************************************
* 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 location before its reclaimed by later BL2 functionality.
******************************************************************************/
void arm_bl2_early_platform_setup(meminfo_t *mem_layout)
{
/* Initialize the console to provide early debug support */
console_init(PLAT_ARM_BOOT_UART_BASE, PLAT_ARM_BOOT_UART_CLK_IN_HZ,
ARM_CONSOLE_BAUDRATE);
/* Setup the BL2 memory layout */
bl2_tzram_layout = *mem_layout;
/* Initialise the IO layer and register platform IO devices */
plat_arm_io_setup();
}
void bl2_early_platform_setup(meminfo_t *mem_layout)
{
arm_bl2_early_platform_setup(mem_layout);
}
/*
* Perform ARM standard platform setup.
*/
void arm_bl2_platform_setup(void)
{
/* Initialize the secure environment */
plat_arm_security_setup();
}
void bl2_platform_setup(void)
{
arm_bl2_platform_setup();
}
/*******************************************************************************
* Perform the very early platform specific architectural setup here. At the
* moment this is only initializes the mmu in a quick and dirty way.
******************************************************************************/
void arm_bl2_plat_arch_setup(void)
{
arm_setup_page_tables(bl2_tzram_layout.total_base,
bl2_tzram_layout.total_size,
BL_CODE_BASE,
BL_CODE_END,
BL_RO_DATA_BASE,
BL_RO_DATA_END
#if USE_COHERENT_MEM
, BL_COHERENT_RAM_BASE,
BL_COHERENT_RAM_END
#endif
);
#ifdef AARCH32
enable_mmu_secure(0);
#else
enable_mmu_el1(0);
#endif
}
void bl2_plat_arch_setup(void)
{
arm_bl2_plat_arch_setup();
}
#if LOAD_IMAGE_V2
int arm_bl2_handle_post_image_load(unsigned int image_id)
{
int err = 0;
bl_mem_params_node_t *bl_mem_params = get_bl_mem_params_node(image_id);
assert(bl_mem_params);
switch (image_id) {
#ifdef AARCH64
case BL32_IMAGE_ID:
bl_mem_params->ep_info.spsr = arm_get_spsr_for_bl32_entry();
break;
#endif
case BL33_IMAGE_ID:
/* BL33 expects to receive the primary CPU MPID (through r0) */
bl_mem_params->ep_info.args.arg0 = 0xffff & read_mpidr();
bl_mem_params->ep_info.spsr = arm_get_spsr_for_bl33_entry();
break;
#ifdef SCP_BL2_BASE
case SCP_BL2_IMAGE_ID:
/* The subsequent handling of SCP_BL2 is platform specific */
err = plat_arm_bl2_handle_scp_bl2(&bl_mem_params->image_info);
if (err) {
WARN("Failure in platform-specific handling of SCP_BL2 image.\n");
}
break;
#endif
}
return err;
}
/*******************************************************************************
* This function can be used by the platforms to update/use image
* information for given `image_id`.
******************************************************************************/
int bl2_plat_handle_post_image_load(unsigned int image_id)
{
return arm_bl2_handle_post_image_load(image_id);
}
#else /* LOAD_IMAGE_V2 */
/*******************************************************************************
* Populate the extents of memory available for loading SCP_BL2 (if used),
* i.e. anywhere in trusted RAM as long as it doesn't overwrite BL2.
******************************************************************************/
void bl2_plat_get_scp_bl2_meminfo(meminfo_t *scp_bl2_meminfo)
{
*scp_bl2_meminfo = bl2_tzram_layout;
}
/*******************************************************************************
* 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 ARM standard platforms we only set the security state of the 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 ARM standard platforms we only set the security state of the entrypoint
******************************************************************************/
#ifdef BL32_BASE
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 = arm_get_spsr_for_bl32_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;
}
#endif /* BL32_BASE */
/*******************************************************************************
* 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 ARM standard platforms we only set the security state of the 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 = arm_get_spsr_for_bl33_entry();
}
/*******************************************************************************
* Populate the extents of memory available for loading BL33
******************************************************************************/
void bl2_plat_get_bl33_meminfo(meminfo_t *bl33_meminfo)
{
bl33_meminfo->total_base = ARM_NS_DRAM1_BASE;
bl33_meminfo->total_size = ARM_NS_DRAM1_SIZE;
bl33_meminfo->free_base = ARM_NS_DRAM1_BASE;
bl33_meminfo->free_size = ARM_NS_DRAM1_SIZE;
}
#endif /* LOAD_IMAGE_V2 */