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arm: spl: prepare for jumping to OPTEE

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Make sure to (if applicable) flush the D-cache, invalidate I-cache,
and disable MMU and caches before jumping to OPTEE.
This fixes the SDP->SPL->OPTEE boot flow on iMX6Q and most likely on
some other ARM SoCs.

Signed-off-by: Ricardo Salveti <ricardo@foundries.io>
Co-developed-by: Oleksandr Suvorov <oleksandr.suvorov@foundries.io>
Signed-off-by: Oleksandr Suvorov <oleksandr.suvorov@foundries.io>
This commit is contained in:
Ricardo Salveti 2021-10-20 15:12:06 +03:00 • committed by Tom Rini
parent d11d1becbd
commit 949eb228f3
3 changed files with 30 additions and 3 deletions
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11
include/spl.h
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@ -468,6 +468,15 @@ int spl_board_boot_device(u32 boot_device);
*/
void __noreturn jump_to_image_linux(struct spl_image_info *spl_image);
/**
* jump_to_image_linux() - Jump to OP-TEE OS from SPL
*
* This jumps into OP-TEE OS using the information in @spl_image.
*
* @spl_image: Image description to set up
*/
void __noreturn jump_to_image_optee(struct spl_image_info *spl_image);
/**
* spl_start_uboot() - Check if SPL should start the kernel or U-Boot
*
@ -759,7 +768,7 @@ struct bl_params *bl2_plat_get_bl31_params_v2_default(uintptr_t bl32_entry,
* @arg2: device tree address, (ARMv7 standard bootarg #2)
* @arg3: non-secure entry address (ARMv7 bootarg #0)
*/
void spl_optee_entry(void *arg0, void *arg1, void *arg2, void *arg3);
void __noreturn spl_optee_entry(void *arg0, void *arg1, void *arg2, void *arg3);
/**
* spl_invoke_opensbi - boot using a RISC-V OpenSBI image