fix: Replaced the standard printf function with a static printf imple…

…mentation

Signed-off-by: Taras Drozdovskyi <t.drozdovsky@samsung.com>

.github/workflows/build.yml

@@ -21,7 +21,6 @@ jobs:
       - name: Build the project
         run: |
           make PLATFORM=${{ matrix.platform }} create_context
-          wget -L https://raw.githubusercontent.com/OpenNuvoton/M2351BSP/master/Library/Device/Nuvoton/M2351/Source/GCC/_syscalls.c -O ./arch/cortex-m23/m2351/src/Device/Nuvoton/M2351/Source/GCC/_syscalls.c
           wget -L https://raw.githubusercontent.com/OpenNuvoton/M2351BSP/master/SampleCode/MKROM/SecureBootDemo/NuBL2/main.c -O ./arch/cortex-m23/m2351/src/NuBL2/main.c
           wget -L https://raw.githubusercontent.com/OpenNuvoton/M2351BSP/master/SampleCode/MKROM/SecureBootDemo/NuBL2/VerifyNuBL3x.c -O ./arch/cortex-m23/m2351/src/NuBL2/VerifyNuBL3x.c
           wget -L https://raw.githubusercontent.com/OpenNuvoton/M2351BSP/master/SampleCode/MKROM/SecureBootDemo/NuBL2/NuBL2.h -O ./arch/cortex-m23/m2351/src/NuBL2/NuBL2.h

.github/workflows/codeql.yml

@@ -82,7 +82,6 @@ jobs:
     - name: Build the project
       run: |
         make PLATFORM=numaker_pfm_m2351 create_context
-        wget -L https://raw.githubusercontent.com/OpenNuvoton/M2351BSP/master/Library/Device/Nuvoton/M2351/Source/GCC/_syscalls.c -O ./arch/cortex-m23/m2351/src/Device/Nuvoton/M2351/Source/GCC/_syscalls.c
         wget -L https://raw.githubusercontent.com/OpenNuvoton/M2351BSP/master/SampleCode/MKROM/SecureBootDemo/NuBL2/main.c -O ./arch/cortex-m23/m2351/src/NuBL2/main.c
         wget -L https://raw.githubusercontent.com/OpenNuvoton/M2351BSP/master/SampleCode/MKROM/SecureBootDemo/NuBL2/VerifyNuBL3x.c -O ./arch/cortex-m23/m2351/src/NuBL2/VerifyNuBL3x.c
         wget -L https://raw.githubusercontent.com/OpenNuvoton/M2351BSP/master/SampleCode/MKROM/SecureBootDemo/NuBL2/NuBL2.h -O ./arch/cortex-m23/m2351/src/NuBL2/NuBL2.h

.github/workflows/publish.yml

@@ -34,7 +34,6 @@ jobs:
       - name: Build the project
         run: |
           make PLATFORM=numaker_pfm_m2351 create_context
-          wget -L https://raw.githubusercontent.com/OpenNuvoton/M2351BSP/master/Library/Device/Nuvoton/M2351/Source/GCC/_syscalls.c -O ./arch/cortex-m23/m2351/src/Device/Nuvoton/M2351/Source/GCC/_syscalls.c
           wget -L https://raw.githubusercontent.com/OpenNuvoton/M2351BSP/master/SampleCode/MKROM/SecureBootDemo/NuBL2/main.c -O ./arch/cortex-m23/m2351/src/NuBL2/main.c
           wget -L https://raw.githubusercontent.com/OpenNuvoton/M2351BSP/master/SampleCode/MKROM/SecureBootDemo/NuBL2/VerifyNuBL3x.c -O ./arch/cortex-m23/m2351/src/NuBL2/VerifyNuBL3x.c
           wget -L https://raw.githubusercontent.com/OpenNuvoton/M2351BSP/master/SampleCode/MKROM/SecureBootDemo/NuBL2/NuBL2.h -O ./arch/cortex-m23/m2351/src/NuBL2/NuBL2.h

COPYING

@@ -282,12 +282,6 @@ valid.
   * Copyright (C) 2017 Nuvoton Technology Corp. All rights reserved.
   */
 
-arch/cortex-m23/m2351/src/Device/Nuvoton/M2351/Source/GCC/_syscalls.c
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-// This file is part of the uOS++ III distribution
-// Parts of this file are from the newlib sources, issued under GPL.
-// Copyright (c) 2014 Liviu Ionescu
-
 arch/cortex-m23/m2351/src/Device/
 arch/cortex-m23/m2351/src/StdDriver/
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

apps/aes/ca/aes_ns.c

@@ -29,6 +29,8 @@
 #include <stdio.h>
 #include <string.h>
 
+#include "printf.h"
+
 /* OP-TEE TEE client API (built by optee_client) */
 #include <tee_client_api.h>
 

apps/hello_world/ca/hello_world_ns.c

@@ -29,6 +29,8 @@
 #include <stdio.h>
 #include <string.h>
 
+#include "printf.h"
+
 #include "tee_client_api.h"
 
 /* To the the UUID (found the the TA's h-file(s)) */

apps/hotp/ca/hotp_ns.c

@@ -9,6 +9,8 @@
 #include <stdio.h>
 #include <string.h>
 
+#include "printf.h"
+
 /* OP-TEE TEE client API (built by optee_client) */
 #include <tee_client_api.h>
 

apps/test/ca/test_ns.c

@@ -29,6 +29,8 @@
 #include <stdio.h>
 #include <string.h>
 
+#include "printf.h"
+
 /* OP-TEE TEE client API (built by optee_client) */
 #include <tee_client_api.h>
 

arch/cortex-m23/m2351/src/Device/Nuvoton/M2351/Source/system_M2351.c

@@ -16,6 +16,8 @@
 #include <stdint.h>
 #include "NuMicro.h"
 
+#include "printf.h"
+
 #if defined (__ARM_FEATURE_CMSE) &&  (__ARM_FEATURE_CMSE == 3U)
 #include "partition_M2351.h"
 extern void SCU_IRQHandler(void);

arch/cortex-m23/m2351/src/NuBL2/Make.defs

@@ -35,8 +35,6 @@ CHIP_ASRCS_S = ../Device/Nuvoton/M2351/Source/GCC/startup_M2351.S \
                KeyInfo/NuBL3xKeyStorage.S
 
 CHIP_CSRCS_S = ../Device/Nuvoton/M2351/Source/system_M2351.c \
-               ../Device/Nuvoton/M2351/Source/GCC/_syscalls.c \
                main.c \
                VerifyNuBL3x.c \
                FwInfo.c
-

arch/cortex-m23/m2351/src/StdDriver/inc/printf.h

@@ -0,0 +1,121 @@
+///////////////////////////////////////////////////////////////////////////////
+// \author (c) Marco Paland (info@paland.com)
+//             2014-2019, PALANDesign Hannover, Germany
+//
+// \license The MIT License (MIT)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+//
+// \brief Tiny printf, sprintf and snprintf implementation, optimized for speed on
+//        embedded systems with a very limited resources.
+//        Use this instead of bloated standard/newlib printf.
+//        These routines are thread safe and reentrant.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef _PRINTF_H_
+#define _PRINTF_H_
+
+#include <stdarg.h>
+#include <stddef.h>
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/**
+ * Output a character to a custom device like UART, used by the printf() function
+ * This function is declared here only. You have to write your custom implementation somewhere
+ * \param character Character to output
+ */
+// #ifdef C_SECURE_CODE
+// void __putchar(char character);
+// #else
+void _putchar(char character);
+// #endif    
+
+
+/**
+ * Tiny printf implementation
+ * You have to implement _putchar if you use printf()
+ * To avoid conflicts with the regular printf() API it is overridden by macro defines
+ * and internal underscore-appended functions like printf_() are used
+ * \param format A string that specifies the format of the output
+ * \return The number of characters that are written into the array, not counting the terminating null character
+ */
+#define printf printf_
+int printf_(const char* format, ...);
+
+
+/**
+ * Tiny sprintf implementation
+ * Due to security reasons (buffer overflow) YOU SHOULD CONSIDER USING (V)SNPRINTF INSTEAD!
+ * \param buffer A pointer to the buffer where to store the formatted string. MUST be big enough to store the output!
+ * \param format A string that specifies the format of the output
+ * \return The number of characters that are WRITTEN into the buffer, not counting the terminating null character
+ */
+#define sprintf sprintf_
+int sprintf_(char* buffer, const char* format, ...);
+
+
+/**
+ * Tiny snprintf/vsnprintf implementation
+ * \param buffer A pointer to the buffer where to store the formatted string
+ * \param count The maximum number of characters to store in the buffer, including a terminating null character
+ * \param format A string that specifies the format of the output
+ * \param va A value identifying a variable arguments list
+ * \return The number of characters that COULD have been written into the buffer, not counting the terminating
+ *         null character. A value equal or larger than count indicates truncation. Only when the returned value
+ *         is non-negative and less than count, the string has been completely written.
+ */
+#define snprintf  snprintf_
+#define vsnprintf vsnprintf_
+int  snprintf_(char* buffer, size_t count, const char* format, ...);
+int vsnprintf_(char* buffer, size_t count, const char* format, va_list va);
+
+
+/**
+ * Tiny vprintf implementation
+ * \param format A string that specifies the format of the output
+ * \param va A value identifying a variable arguments list
+ * \return The number of characters that are WRITTEN into the buffer, not counting the terminating null character
+ */
+#define vprintf vprintf_
+int vprintf_(const char* format, va_list va);
+
+
+/**
+ * printf with output function
+ * You may use this as dynamic alternative to printf() with its fixed _putchar() output
+ * \param out An output function which takes one character and an argument pointer
+ * \param arg An argument pointer for user data passed to output function
+ * \param format A string that specifies the format of the output
+ * \return The number of characters that are sent to the output function, not counting the terminating null character
+ */
+int fctprintf(void (*out)(char character, void* arg), void* arg, const char* format, ...);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif  // _PRINTF_H_

arch/cortex-m23/m2351/src/StdDriver/src/Makefile

@@ -67,6 +67,7 @@ SRCS += uart.c
 #SRCS += usci_uart.c
 #SRCS += wdt.c
 #SRCS += wwdt.c
+SRCS += printf.c
 
 ifeq ($(WORLD), secure)
 SRCS += clk.c