ti: k3: common: Populate BL32 and BL33 entrypoint
Because there is no BL2, BL31 must determine the entrypoint and memory location of BL32 and BL33 on its own. BL32_BASE and PRELOADED_BL33_BASE will be set in the corresponding board makefile. We also allow a DTB address to be specified for cases when BL33 is a Linux image. NOTE: It is possible to pull in this information from device tree as well, however libfdt does not contain the required hooks to make this happen at this point in time. Signed-off-by: Benjamin Fair <b-fair@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Andrew F. Davis <afd@ti.com>
This commit is contained in:
parent
8957471572
commit
a546d25b1e
|
@ -12,6 +12,31 @@
|
|||
#include <platform_def.h>
|
||||
#include <string.h>
|
||||
|
||||
/*
|
||||
* Placeholder variables for maintaining information about the next image(s)
|
||||
*/
|
||||
static entry_point_info_t bl32_image_ep_info;
|
||||
static entry_point_info_t bl33_image_ep_info;
|
||||
|
||||
/*******************************************************************************
|
||||
* Gets SPSR for BL33 entry
|
||||
******************************************************************************/
|
||||
static uint32_t k3_get_spsr_for_bl33_entry(void)
|
||||
{
|
||||
unsigned long el_status;
|
||||
unsigned int mode;
|
||||
uint32_t spsr;
|
||||
|
||||
/* Figure out what mode we enter the non-secure world in */
|
||||
el_status = read_id_aa64pfr0_el1() >> ID_AA64PFR0_EL2_SHIFT;
|
||||
el_status &= ID_AA64PFR0_ELX_MASK;
|
||||
|
||||
mode = (el_status) ? MODE_EL2 : MODE_EL1;
|
||||
|
||||
spsr = SPSR_64(mode, MODE_SP_ELX, DISABLE_ALL_EXCEPTIONS);
|
||||
return spsr;
|
||||
}
|
||||
|
||||
/*******************************************************************************
|
||||
* Perform any BL3-1 early platform setup, such as console init and deciding on
|
||||
* memory layout.
|
||||
|
@ -22,6 +47,34 @@ void bl31_early_platform_setup(bl31_params_t *from_bl2,
|
|||
/* 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);
|
||||
bl32_image_ep_info.pc = BL32_BASE;
|
||||
bl32_image_ep_info.spsr = SPSR_64(MODE_EL1, MODE_SP_ELX,
|
||||
DISABLE_ALL_EXCEPTIONS);
|
||||
SET_SECURITY_STATE(bl32_image_ep_info.h.attr, SECURE);
|
||||
#endif
|
||||
|
||||
/* Populate entry point information for BL33 */
|
||||
SET_PARAM_HEAD(&bl33_image_ep_info, PARAM_EP, VERSION_1, 0);
|
||||
bl33_image_ep_info.pc = PRELOADED_BL33_BASE;
|
||||
bl33_image_ep_info.spsr = k3_get_spsr_for_bl33_entry();
|
||||
SET_SECURITY_STATE(bl33_image_ep_info.h.attr, NON_SECURE);
|
||||
|
||||
#ifdef K3_HW_CONFIG_BASE
|
||||
/*
|
||||
* According to the file ``Documentation/arm64/booting.txt`` of the
|
||||
* Linux kernel tree, Linux expects the physical address of the device
|
||||
* tree blob (DTB) in x0, while x1-x3 are reserved for future use and
|
||||
* must be 0.
|
||||
*/
|
||||
bl33_image_ep_info.args.arg0 = (u_register_t)K3_HW_CONFIG_BASE;
|
||||
bl33_image_ep_info.args.arg1 = 0U;
|
||||
bl33_image_ep_info.args.arg2 = 0U;
|
||||
bl33_image_ep_info.args.arg3 = 0U;
|
||||
#endif
|
||||
}
|
||||
|
||||
void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
|
||||
|
@ -61,5 +114,18 @@ void bl31_plat_runtime_setup(void)
|
|||
******************************************************************************/
|
||||
entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
|
||||
{
|
||||
entry_point_info_t *next_image_info;
|
||||
|
||||
assert(sec_state_is_valid(type));
|
||||
next_image_info = (type == NON_SECURE) ? &bl33_image_ep_info :
|
||||
&bl32_image_ep_info;
|
||||
/*
|
||||
* None of the images on the ARM development platforms can have 0x0
|
||||
* as the entrypoint
|
||||
*/
|
||||
if (next_image_info->pc)
|
||||
return next_image_info;
|
||||
|
||||
NOTICE("Requested nonexistent image\n");
|
||||
return NULL;
|
||||
}
|
||||
|
|
Loading…
Reference in New Issue