From 563c92e6d08c305cb9f7693818ecbe2a2dec527b Mon Sep 17 00:00:00 2001
From: Clyne Sullivan <tullivan99@gmail.com>
Date: Thu, 29 Nov 2018 20:43:06 -0500
Subject: hello world from initrd

---
 initrd/Makefile |  16 +++++++++++-----
 initrd/hello    |   1 -
 initrd/init     | Bin 0 -> 12524 bytes
 initrd/init.c   |  14 ++++++++++++++
 initrd/test     | Bin 37024 -> 0 bytes
 initrd/test.c   |  16 ----------------
 6 files changed, 25 insertions(+), 22 deletions(-)
 delete mode 100644 initrd/hello
 create mode 100755 initrd/init
 create mode 100644 initrd/init.c
 delete mode 100755 initrd/test
 delete mode 100644 initrd/test.c

(limited to 'initrd')

diff --git a/initrd/Makefile b/initrd/Makefile
index 705ac6c..5946eee 100644
--- a/initrd/Makefile
+++ b/initrd/Makefile
@@ -1,6 +1,12 @@
+##
+# A simple Makefile for building executables loadable by stmos.
+#
+
+ARCH = arm-stmos-
+CC = gcc -mcpu=cortex-m4 -mthumb -fsigned-char
+CFLAGS = -Os -fPIE
+
 all:
-	@arm-none-eabi-gcc -mcpu=cortex-m4 -mthumb -fsigned-char -Os \
-		-nostdinc -nostdlib \
-		-fdata-sections -ffunction-sections -Wl,--gc-sections \
-		-I../src/pdclib/include -I../src/pdclib/platform/stmos/include \
-		test.c ../src/pdclib/pdclib.a -s -o test
+	@$(ARCH)$(CC) $(CFLAGS) init.c -o init
+	@arm-stmos-strip init
+
diff --git a/initrd/hello b/initrd/hello
deleted file mode 100644
index 5d437a5..0000000
--- a/initrd/hello
+++ /dev/null
@@ -1 +0,0 @@
-Hello, world!!
diff --git a/initrd/init b/initrd/init
new file mode 100755
index 0000000..3bc5fd8
Binary files /dev/null and b/initrd/init differ
diff --git a/initrd/init.c b/initrd/init.c
new file mode 100644
index 0000000..5ff4ae5
--- /dev/null
+++ b/initrd/init.c
@@ -0,0 +1,14 @@
+/**
+ * @file test.c
+ * Basic userland code to be loaded by stmos for program load testing.
+ */
+
+#include <stdio.h>
+
+int main(void)
+{
+	printf("Hello, world!\n");
+	while (1);
+	return 0;
+}
+
diff --git a/initrd/test b/initrd/test
deleted file mode 100755
index 7bf8246..0000000
Binary files a/initrd/test and /dev/null differ
diff --git a/initrd/test.c b/initrd/test.c
deleted file mode 100644
index b79f315..0000000
--- a/initrd/test.c
+++ /dev/null
@@ -1,16 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-int main(void);
-
-void _start(void)
-{
-	exit(main());
-}
-
-int main(void)
-{
-	printf("Hello, world!\n");
-	return 0;
-}
-
-- 
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