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authorPeng Fan <peng.fan@nxp.com>2020-07-10 14:18:01 +0800
committerPeng Fan <van.freenix@gmail.com>2020-07-22 10:27:36 +0000
commit4a0ac3e38e51cb05217d1feef1816fc3738074be (patch)
treec6b0be8b2318152543e5b050abd78710a1e434e7 /plat/imx
parentd95c3de34747906f203bbe9cbbb805a06b207ada (diff)
downloadtrusted-firmware-a-4a0ac3e38e51cb05217d1feef1816fc3738074be.tar.gz
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
Diffstat (limited to 'plat/imx')
-rw-r--r--plat/imx/common/imx_sip_handler.c36
-rw-r--r--plat/imx/common/imx_sip_svc.c3
-rw-r--r--plat/imx/common/include/imx_sip_svc.h5
3 files changed, 44 insertions, 0 deletions
diff --git a/plat/imx/common/imx_sip_handler.c b/plat/imx/common/imx_sip_handler.c
index 62048b6963..f9f5577c41 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 @@ uint64_t imx_buildinfo_handler(uint32_t smc_fid,
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;
+}
diff --git a/plat/imx/common/imx_sip_svc.c b/plat/imx/common/imx_sip_svc.c
index 4893b9fa53..20e1479fbf 100644
--- a/plat/imx/common/imx_sip_svc.c
+++ b/plat/imx/common/imx_sip_svc.c
@@ -26,6 +26,9 @@ static uintptr_t imx_sip_handler(unsigned int smc_fid,
u_register_t flags)
{
switch (smc_fid) {
+ case IMX_SIP_AARCH32:
+ SMC_RET1(handle, imx_kernel_entry_handler(smc_fid, x1, x2, x3, x4));
+ break;
#if defined(PLAT_imx8mq)
case IMX_SIP_GET_SOC_INFO:
SMC_RET1(handle, imx_soc_info_handler(smc_fid, x1, x2, x3));
diff --git a/plat/imx/common/include/imx_sip_svc.h b/plat/imx/common/include/imx_sip_svc.h
index 5898f7a81e..0a2d750f90 100644
--- a/plat/imx/common/include/imx_sip_svc.h
+++ b/plat/imx/common/include/imx_sip_svc.h
@@ -28,6 +28,11 @@
#define IMX_SIP_MISC_SET_TEMP 0xC200000C
+#define IMX_SIP_AARCH32 0xC20000FD
+
+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);
#if defined(PLAT_imx8mq)
int imx_soc_info_handler(uint32_t smc_fid, u_register_t x1,
u_register_t x2, u_register_t x3);