asmp/worker: Add some stdio library functions on worker

Add printf, putchar and puts on worker as like stdio library.

sdk/modules/asmp/worker/Makefile

@@ -44,8 +44,8 @@ DEPPATH = --dep-path arch --dep-path . $(LIBC_DEPPATH)
 
 ASRCS  = exception.S
 
-CSRCS  = common.c mpmq.c mpmutex.c mpshm.c
-CSRCS += cpufifo.c cpuid.c doirq.c startup.c sysctl.c clock.c timer.c
+CSRCS  = common.c mpmq.c mpmutex.c mpshm.c printf.c
+CSRCS += cpufifo.c cpuid.c doirq.c startup.c sysctl.c clock.c timer.c lowputc.c
 CSRCS += $(LIBC_CSRCS)
 
 AOBJS = $(ASRCS:.S=$(OBJEXT))

sdk/modules/asmp/worker/arch/lowputc.c

@@ -0,0 +1,59 @@
+/****************************************************************************
+ * modules/asmp/worker/arch/lowputc.c
+ *
+ *   Copyright 2024 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include "hardware/cxd56_uart.h"
+#include "hardware/cxd5602_memorymap.h"
+#include "arm_internal.h"
+
+#include "arch/lowputc.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+void lowputc(const char ch)
+{
+  /* Wait for the transmitter to be available */
+
+  while ((getreg32(CXD56_UART1_BASE + CXD56_UART_FR) & UART_FLAG_TXFF));
+
+  /* Send the character */
+
+  putreg32((uint32_t)ch, CXD56_UART1_BASE + CXD56_UART_DR);
+}

sdk/modules/asmp/worker/arch/lowputc.h

@@ -0,0 +1,42 @@
+/****************************************************************************
+ * modules/asmp/worker/arch/lowputc.h
+ *
+ *   Copyright 2024 Sony Semiconductor Solutions Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Sony Semiconductor Solutions Corporation nor
+ *    the names of its contributors may be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+#ifndef _ASMP_WORKER_ARCH_LOWPUTC_H_
+#define _ASMP_WORKER_ARCH_LOWPUTC_H_
+
+void lowputc(const char ch);
+
+#endif
+