/*******************************************************************************
* 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();
}
/*******************************************************************************
* Perform any BL3-1 early platform setup common to ARM standard platforms.
* Here is an opportunity to copy parameters passed by the calling EL (S-EL1
* in BL2 & S-EL3 in BL1) before they are lost (potentially). This needs to be
* done before the MMU is initialized so that the memory layout can be used
* while creating page tables. BL2 has flushed this information to memory, so
* we are guaranteed to pick up good data.
******************************************************************************/
void arm_bl31_early_platform_setup(bl31_params_t *from_bl2,
void *plat_params_from_bl2)
{
/* 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);
#if RESET_TO_BL31
/* There are no parameters from BL2 if BL3-1 is a reset vector */
assert(from_bl2 == NULL);
assert(plat_params_from_bl2 == NULL);
/* Populate entry point information for BL3-2 and BL3-3 */
SET_PARAM_HEAD(&bl32_image_ep_info,
PARAM_EP,
VERSION_1,
0);
SET_SECURITY_STATE(bl32_image_ep_info.h.attr, SECURE);
bl32_image_ep_info.pc = BL32_BASE;
bl32_image_ep_info.spsr = arm_get_spsr_for_bl32_entry();
SET_PARAM_HEAD(&bl33_image_ep_info,
PARAM_EP,
VERSION_1,
0);
/*
* Tell BL3-1 where the non-trusted software image
* is located and the entry state information
*/
bl33_image_ep_info.pc = plat_get_ns_image_entrypoint();
bl33_image_ep_info.spsr = arm_get_spsr_for_bl33_entry();
SET_SECURITY_STATE(bl33_image_ep_info.h.attr, NON_SECURE);
#else
/*
* Check params passed from BL2 should not be NULL,
*/
assert(from_bl2 != NULL);
assert(from_bl2->h.type == PARAM_BL31);
assert(from_bl2->h.version >= VERSION_1);
/*
* In debug builds, we pass a special value in 'plat_params_from_bl2'
* to verify platform parameters from BL2 to BL3-1.
* In release builds, it's not used.
*/
assert(((unsigned long long)plat_params_from_bl2) ==
ARM_BL31_PLAT_PARAM_VAL);
/*
* Copy BL3-2 and BL3-3 entry point information.
* They are stored in Secure RAM, in BL2's address space.
*/
bl32_image_ep_info = *from_bl2->bl32_ep_info;
bl33_image_ep_info = *from_bl2->bl33_ep_info;
#endif
}
/*******************************************************************************
* Utility function to perform early platform setup.
******************************************************************************/
void arm_sp_min_early_platform_setup(void *from_bl2, uintptr_t tos_fw_config,
uintptr_t hw_config, void *plat_params_from_bl2)
{
/* 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);
#if RESET_TO_SP_MIN
/* There are no parameters from BL2 if SP_MIN is a reset vector */
assert(from_bl2 == NULL);
assert(plat_params_from_bl2 == NULL);
/* Populate entry point information for BL33 */
SET_PARAM_HEAD(&bl33_image_ep_info,
PARAM_EP,
VERSION_1,
0);
/*
* Tell SP_MIN where the non-trusted software image
* is located and the entry state information
*/
bl33_image_ep_info.pc = plat_get_ns_image_entrypoint();
bl33_image_ep_info.spsr = arm_get_spsr_for_bl33_entry();
SET_SECURITY_STATE(bl33_image_ep_info.h.attr, NON_SECURE);
#else /* RESET_TO_SP_MIN */
/*
* Check params passed from BL2 should not be NULL,
*/
bl_params_t *params_from_bl2 = (bl_params_t *)from_bl2;
assert(params_from_bl2 != NULL);
assert(params_from_bl2->h.type == PARAM_BL_PARAMS);
assert(params_from_bl2->h.version >= VERSION_2);
bl_params_node_t *bl_params = params_from_bl2->head;
/*
* Copy BL33 entry point information.
* They are stored in Secure RAM, in BL2's address space.
*/
while (bl_params) {
if (bl_params->image_id == BL33_IMAGE_ID) {
bl33_image_ep_info = *bl_params->ep_info;
break;
}
bl_params = bl_params->next_params_info;
}
if (bl33_image_ep_info.pc == 0)
panic();
#endif /* RESET_TO_SP_MIN */
}
void arm_bl31_early_platform_setup(bl31_params_t *from_bl2,
void *plat_params_from_bl2)
#endif
{
/* 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);
#if RESET_TO_BL31
/* There are no parameters from BL2 if BL31 is a reset vector */
assert(from_bl2 == NULL);
assert(plat_params_from_bl2 == NULL);
#ifdef BL32_BASE
/* Populate entry point information for BL32 */
SET_PARAM_HEAD(&bl32_image_ep_info,
PARAM_EP,
VERSION_1,
0);
SET_SECURITY_STATE(bl32_image_ep_info.h.attr, SECURE);
bl32_image_ep_info.pc = BL32_BASE;
bl32_image_ep_info.spsr = arm_get_spsr_for_bl32_entry();
#endif /* BL32_BASE */
/* Populate entry point information for BL33 */
SET_PARAM_HEAD(&bl33_image_ep_info,
PARAM_EP,
VERSION_1,
0);
/*
* Tell BL31 where the non-trusted software image
* is located and the entry state information
*/
bl33_image_ep_info.pc = plat_get_ns_image_entrypoint();
bl33_image_ep_info.spsr = arm_get_spsr_for_bl33_entry();
SET_SECURITY_STATE(bl33_image_ep_info.h.attr, NON_SECURE);
#else /* RESET_TO_BL31 */
/*
* In debug builds, we pass a special value in 'plat_params_from_bl2'
* to verify platform parameters from BL2 to BL31.
* In release builds, it's not used.
*/
assert(((unsigned long long)plat_params_from_bl2) ==
ARM_BL31_PLAT_PARAM_VAL);
# if LOAD_IMAGE_V2
/*
* Check params passed from BL2 should not be NULL,
*/
bl_params_t *params_from_bl2 = (bl_params_t *)from_bl2;
assert(params_from_bl2 != NULL);
assert(params_from_bl2->h.type == PARAM_BL_PARAMS);
assert(params_from_bl2->h.version >= VERSION_2);
bl_params_node_t *bl_params = params_from_bl2->head;
/*
* Copy BL33 and BL32 (if present), entry point information.
* They are stored in Secure RAM, in BL2's address space.
*/
while (bl_params) {
if (bl_params->image_id == BL32_IMAGE_ID)
bl32_image_ep_info = *bl_params->ep_info;
if (bl_params->image_id == BL33_IMAGE_ID)
bl33_image_ep_info = *bl_params->ep_info;
bl_params = bl_params->next_params_info;
}
if (bl33_image_ep_info.pc == 0)
panic();
# else /* LOAD_IMAGE_V2 */
/*
* Check params passed from BL2 should not be NULL,
*/
assert(from_bl2 != NULL);
assert(from_bl2->h.type == PARAM_BL31);
assert(from_bl2->h.version >= VERSION_1);
/*
* Copy BL32 (if populated by BL2) and BL33 entry point information.
* They are stored in Secure RAM, in BL2's address space.
*/
if (from_bl2->bl32_ep_info)
bl32_image_ep_info = *from_bl2->bl32_ep_info;
bl33_image_ep_info = *from_bl2->bl33_ep_info;
# endif /* LOAD_IMAGE_V2 */
#endif /* RESET_TO_BL31 */
}
