linker: arm: place priv.noinit at the end of RAM

This puts the priviledged stack at the end of RAM.
This combines PR #10507 and #10542.

Fixes #10473
Fixes #10474
Fixes #10515

Signed-off-by: Adithya Baglody <[email protected]>
Signed-off-by: Daniel Leung <[email protected]>

Author: AdithyaBaglody

include/arch/arm/cortex_m/scripts/linker.ld

@@ -366,6 +366,8 @@ SECTIONS
 #include <linker/priv_stacks.ld>
 #include <linker/kobject.ld>
 
+#include <linker/priv_stacks-noinit.ld>
+
     __data_ram_end = .;
 
 

include/linker/priv_stacks-noinit.ld

@@ -0,0 +1,10 @@
+/*
+ * Copyright (c) 2017 Linaro Limited.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+     SECTION_DATA_PROLOGUE(priv_stacks_noinit,,)
+        {
+        *(".priv_stacks.noinit")
+        } GROUP_DATA_LINK_IN(RAMABLE_REGION, ROMABLE_REGION)

scripts/sanitycheck

@@ -655,7 +655,8 @@ class SizeCalculator:
                    "ccm_data", "usb_descriptor", "usb_data", "usb_bos_desc",
                    'log_backends_sections', 'log_dynamic_sections',
                    'log_const_sections',"app_smem", 'shell_root_cmds_sections',
-                   'log_const_sections',"app_smem", "font_entry_sections"]
+                   'log_const_sections',"app_smem", "font_entry_sections",
+                   "priv_stacks_noinit"]
     # These get copied into RAM only on non-XIP
     ro_sections = ["text", "ctors", "init_array", "reset", "object_access",
                    "rodata", "devconfig", "net_l2", "vector", "_bt_settings_area"]