From be3e3c568ab76fbd0d725aeb7a42fc94f982557b Mon Sep 17 00:00:00 2001
From: Amir Cohen <the.amiro.cohen@gmail.com>
Date: Sun, 22 Oct 2017 10:54:58 +0300
Subject: [PATCH] Add msplim_ns for public box

---
 api/src/uvisor-input.S   | 3 +++
 core/system/inc/linker.h | 3 +++
 core/system/src/main.c   | 3 +++
 3 files changed, 9 insertions(+)

diff --git a/api/src/uvisor-input.S b/api/src/uvisor-input.S
index 95536a4f..321e4319 100644
--- a/api/src/uvisor-input.S
+++ b/api/src/uvisor-input.S
@@ -114,6 +114,9 @@ uvisor_config:
     /* Debug driver pointer */
     .long __uvisor_debug_driver
 
+    /* Stack limit for public box MSPLIM_NS, accessed by public_box_stack_limit */
+    .long __StackLimit
+
 /* uVisor mode of operation
  * Modes available: UVISOR_ENABLED, UVISOR_DISABLED, UVISOR_PERMISSIVE. */
 __uvisor_mode:
diff --git a/core/system/inc/linker.h b/core/system/inc/linker.h
index a173b2cb..df6030fc 100644
--- a/core/system/inc/linker.h
+++ b/core/system/inc/linker.h
@@ -121,6 +121,9 @@ typedef struct {
     UvisorLibHooks const * const lib_hooks;
 
     TUvisorDebugDriver const * const debug_driver;
+
+    /* Stack limit for public box MSPNS_LIM*/
+    uint32_t public_box_stack_limit;
 } UVISOR_PACKED UvisorConfig;
 
 extern UvisorConfig const __uvisor_config;
diff --git a/core/system/src/main.c b/core/system/src/main.c
index 4f168803..3a9ef5ea 100644
--- a/core/system/src/main.c
+++ b/core/system/src/main.c
@@ -161,6 +161,9 @@ void main_init(void)
     /* NS P stack pointer, for the RTOS and the uVisor-ns. */
     __TZ_set_MSP_NS(original_sp);
 
+    /* NS P limit, for the RTOS and the uVisor-ns. */
+    __TZ_set_MSPLIM_NS(__uvisor_config.public_box_stack_limit);
+
     /* S NP stack pointer, for the SDSs and the transition gateways. */
     __set_PSP((uint32_t) &__uvisor_stack_top_np__);
 #else /* defined(ARCH_CORE_ARMv8M) */