board: ti: am43xx: Add TEE loading and firewall setup

Add support for loading a TEE and setting up firewalled regions to
AM43xx HS boards.

Signed-off-by: Andrew F. Davis <afd@ti.com>

board/ti/am43xx/board.c

@@ -859,4 +859,11 @@ void board_fit_image_post_process(void **p_image, size_t *p_size)
 {
 	secure_boot_verify_image(p_image, p_size);
 }
+
+void board_tee_image_process(ulong tee_image, size_t tee_size)
+{
+	secure_tee_install((u32)tee_image);
+}
+
+U_BOOT_FIT_LOADABLE_HANDLER(IH_TYPE_TEE, board_tee_image_process);
 #endif

configs/am43xx_hs_evm_defconfig

@@ -4,6 +4,9 @@ CONFIG_TI_COMMON_CMD_OPTIONS=y
 CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_AM43XX=y
 CONFIG_TI_SECURE_DEVICE=y
+CONFIG_TI_SECURE_EMIF_REGION_START=0xbdb00000
+CONFIG_TI_SECURE_EMIF_TOTAL_REGION_SIZE=0x02000000
+CONFIG_TI_SECURE_EMIF_PROTECTED_REGION_SIZE=0x01c00000
 CONFIG_ISW_ENTRY_ADDR=0x403018e0
 CONFIG_SPL_STACK_R_ADDR=0x82000000
 CONFIG_DEFAULT_DEVICE_TREE="am437x-gp-evm"