From: phfr24 <phfr24@inf.ufpr.br>
Date: Sun, 15 Mar 2026 19:06:24 +0000 (-0300)
Subject: initial commit
X-Git-Url: https://git.wirehaze.ovh/stm32f411ceu6.git/commitdiff_plain/HEAD?ds=sidebyside

initial commit

add Makefile, notes.txt
---

e5cf92b01c6b1b43f08b555340525cb24bf35b72
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..df8f758
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,73 @@
+# GNU 'make'
+#
+# 10.2 Catalogue of Built-In Rules
+# ================================
+#
+# Compiling C programs
+#      'N.o' is made automatically from 'N.c' with a recipe of the form
+#      '$(CC) $(CPPFLAGS) $(CFLAGS) -c'.
+#
+# Assembling and preprocessing assembler programs
+#      'N.o' is made automatically from 'N.s' by running the assembler,
+#      'as'.  The precise recipe is '$(AS) $(ASFLAGS)'.
+#
+#      'N.s' is made automatically from 'N.S' by running the C
+#      preprocessor, 'cpp'.  The precise recipe is '$(CPP) $(CPPFLAGS)'.
+
+# Preprocessor
+CPP := arm-none-eabi-cpp
+CPPFLAGS :=
+
+# Assembler
+AS := arm-none-eabi-as
+ASFLAGS :=
+
+# C Compiler
+CC := arm-none-eabi-gcc
+CFLAGS := -march=armv7e-m+fp \
+					-mtune=cortex-m4 \
+					-mthumb \
+					-mfloat-abi=hard \
+					-std=gnu90 \
+					-ffreestanding \
+					-fsingle-precision-constant \
+					-pedantic \
+					-pedantic-errors \
+					-Wall \
+					-Wextra \
+					-Wconversion \
+					-Wstrict-prototypes \
+					-Wshadow \
+					-Wundef \
+					-Wdouble-promotion
+
+# Linker
+LD := arm-none-eabi-ld
+LDFLAGS := -nostdlib
+LDLIBS :=
+
+# objcopy
+OC := arm-none-eabi-objcopy
+OCFLAGS := --output-target=binary
+
+# Build
+objs := kernel.o
+lds := kernel.ld
+LDFLAGS += -T $(lds)
+
+elf := kernel.elf
+bin := kernel.bin
+
+# Targets
+all : $(bin)
+
+clean :
+	rm -f $(bin) $(elf) $(objs)
+
+.PHONY : all clean
+
+$(bin) : $(elf)
+	$(OC) $(OCFLAGS) $< $@
+
+$(elf) : $(objs) $(lds)
+	$(LD) $(filter %.o,$^) $(LDFLAGS) $(LDLIBS) -o $@
diff --git a/notes.txt b/notes.txt
new file mode 100644
index 0000000..d9140c0
--- /dev/null
+++ b/notes.txt
@@ -0,0 +1,3 @@
+[ ] linker script
+[ ] test -Os / -Oz optimization flags
+[ ] deep dive into GNU toolkit documentation