tensorflow/lite/micro/tools/make/increase-stack-size-and-switch-DTCM-SRAM.patch

From 470dee13bffc0adb9a778d56fab3028031f71e80 Mon Sep 17 00:00:00 2001
From: TFLM <tflm@google.com>
Date: Fri, 28 Oct 2022 11:01:15 +0200
Subject: [PATCH] TFLM patch

---
 targets/corstone-300/platform.ld      |  8 +++-----
 targets/corstone-300/platform.scatter |  5 +++--
 targets/corstone-300/retarget.c       | 16 ++++++++--------
 3 files changed, 14 insertions(+), 15 deletions(-)

diff --git a/targets/corstone-300/platform.ld b/targets/corstone-300/platform.ld
index ec58acc..21316a4 100644
--- a/targets/corstone-300/platform.ld
+++ b/targets/corstone-300/platform.ld
@@ -75,7 +75,7 @@
   #define ETHOSU_ARENA  1
 #endif
 
-__STACK_SIZE = 0x00008000;
+__STACK_SIZE = 0x00030000;
 __HEAP_SIZE  = 0x00008000;
 
 MEMORY
@@ -150,9 +150,6 @@ SECTIONS
     *(EXCLUDE_FILE(*crtend?.o *crtend.o) .dtors)
     *(SORT(.dtors.*))
     *(.dtors)
-
-    *(.rodata*)
-
     KEEP(*(.eh_frame*))
   } > ITCM :rom_exec
 
@@ -275,6 +272,7 @@ SECTIONS
     *(network_model_sec)
 #endif
     * (expected_output_data_sec)
+    *(.rodata*)
   } > DDR :rom_dram
 
   __eddr_data = ALIGN (16) ;
@@ -293,7 +291,7 @@ SECTIONS
     *(COMMON)
     . = ALIGN(4);
     __bss_end__ = .;
-  } > DTCM :null
+  } > SRAM :null
 
   .heap (COPY) :
   {
diff --git a/targets/corstone-300/platform.scatter b/targets/corstone-300/platform.scatter
index fab12d1..be5c227 100644
--- a/targets/corstone-300/platform.scatter
+++ b/targets/corstone-300/platform.scatter
@@ -1,3 +1,4 @@
+#!cpp
 /*
  * Copyright (c) 2019-2021 Arm Limited. All rights reserved.
  *
@@ -76,7 +77,7 @@
 #endif
 
 #ifndef STACK_SIZE
-#define STACK_SIZE 0x8000
+#define STACK_SIZE 0x20000
 #endif
 
 #ifndef HEAP_SIZE
@@ -136,7 +137,6 @@ APP_IMAGE LR_START LR_SIZE
         ; Make sure reset_handler ends up in root segment, when split across
         ; ITCM and DTCM
         startup_ARMCM55.o
-        .ANY (+RO)
     }
 
 #if defined(USE_TRUSTZONE) && defined(TRUSTZONE_SECURE)
@@ -209,6 +209,7 @@ LOAD_REGION_1 DDR_START DDR_SIZE
         * (input_data_sec)
         * (expected_output_data_sec)
         * (output_data_sec)
+        .ANY (+RO)
     }
 
     #if (ETHOSU_ARENA == 1)
diff --git a/targets/corstone-300/retarget.c b/targets/corstone-300/retarget.c
index 4bde44d..b510ad8 100644
--- a/targets/corstone-300/retarget.c
+++ b/targets/corstone-300/retarget.c
@@ -172,14 +172,6 @@ long RETARGET(_flen)(FILEHANDLE fh) {
     return -1;
 }
 
-int RETARGET(_tmpnam)(char *name, int sig, unsigned maxlen) {
-    (void)name;
-    (void)sig;
-    (void)maxlen;
-
-    return 1;
-}
-
 char *RETARGET(_command_string)(char *cmd, int len) {
     (void)len;
 
@@ -274,3 +266,11 @@ int ferror(FILE *f) {
     return EOF;
 }
 #endif
+
+#if defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6100100)
+#else
+void RETARGET(exit)(int return_code) {
+  RETARGET(_exit)(return_code);
+  while (1) {}
+}
+#endif
-- 
2.17.1