plat: imx: common: implement IMX_SIP_AARCH32
Implement IMX_SIP_AARCH32 to let AArch64 Bootloader could issue
SIP call to switch to AArch32 mode to run OS.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Change-Id: I38b04ef909a6dbfba5ded12a7bb6e799a3935a66
diff --git a/plat/imx/common/imx_sip_handler.c b/plat/imx/common/imx_sip_handler.c
index 62048b6..f9f5577 100644
--- a/plat/imx/common/imx_sip_handler.c
+++ b/plat/imx/common/imx_sip_handler.c
@@ -4,6 +4,7 @@
* SPDX-License-Identifier: BSD-3-Clause
*/
+#include <arch.h>
#include <stdlib.h>
#include <stdint.h>
#include <services/std_svc.h>
@@ -12,6 +13,7 @@
#include <common/debug.h>
#include <common/runtime_svc.h>
#include <imx_sip_svc.h>
+#include <lib/el3_runtime/context_mgmt.h>
#include <sci/sci.h>
#if defined(PLAT_imx8qm) || defined(PLAT_imx8qx)
@@ -185,3 +187,37 @@
return ret;
}
+
+int imx_kernel_entry_handler(uint32_t smc_fid,
+ u_register_t x1,
+ u_register_t x2,
+ u_register_t x3,
+ u_register_t x4)
+{
+ static entry_point_info_t bl33_image_ep_info;
+ entry_point_info_t *next_image_info;
+ unsigned int mode;
+
+ if (x1 < (PLAT_NS_IMAGE_OFFSET & 0xF0000000))
+ return SMC_UNK;
+
+ mode = MODE32_svc;
+
+ next_image_info = &bl33_image_ep_info;
+
+ next_image_info->pc = x1;
+
+ next_image_info->spsr = SPSR_MODE32(mode, SPSR_T_ARM, SPSR_E_LITTLE,
+ (DAIF_FIQ_BIT | DAIF_IRQ_BIT | DAIF_ABT_BIT));
+
+ next_image_info->args.arg0 = 0;
+ next_image_info->args.arg1 = 0;
+ next_image_info->args.arg2 = x3;
+
+ SET_SECURITY_STATE(next_image_info->h.attr, NON_SECURE);
+
+ cm_init_my_context(next_image_info);
+ cm_prepare_el3_exit(NON_SECURE);
+
+ return 0;
+}