pc-bios/s390-ccw: Add core files for the network bootloading program

This is just a preparation for the next steps: Add a makefile and a
stripped down copy of pc-bios/s390-ccw/main.c as a basis for the network
bootloader program, linked against the libc from SLOF already (which we
will need for SLOF's libnet). The networking code is not included yet.

Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1499863793-18627-10-git-send-email-thuth@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/pc-bios/s390-ccw/netboot.mak b/pc-bios/s390-ccw/netboot.mak
new file mode 100644
index 0000000000..44b7645a8f
--- /dev/null
+++ b/pc-bios/s390-ccw/netboot.mak
@@ -0,0 +1,47 @@
+
+SLOF_DIR := $(SRC_PATH)/roms/SLOF
+
+NETOBJS := start.o sclp.o virtio.o netmain.o libc.a
+
+LIBC_INC := -nostdinc -I$(SLOF_DIR)/lib/libc/include
+LIBNET_INC := -I$(SLOF_DIR)/lib/libnet
+
+NETLDFLAGS := $(LDFLAGS) -Ttext=0x7800000
+
+$(NETOBJS): QEMU_CFLAGS += $(LIBC_INC) $(LIBNET_INC)
+
+s390-netboot.elf: $(NETOBJS)
+	$(call quiet-command,$(CC) $(NETLDFLAGS) -o $@ $(NETOBJS),"BUILD","$(TARGET_DIR)$@")
+
+s390-netboot.img: s390-netboot.elf
+	$(call quiet-command,$(STRIP) --strip-unneeded $< -o $@,"STRIP","$(TARGET_DIR)$@")
+
+# libc files:
+
+LIBC_CFLAGS :=  $(QEMU_CFLAGS) $(LIBC_INC) $(LIBNET_INC)
+
+CTYPE_OBJS = isdigit.o isxdigit.o toupper.o
+%.o : $(SLOF_DIR)/lib/libc/ctype/%.c
+	$(call quiet-command,$(CC) $(LIBC_CFLAGS) -c -o $@ $<,"CC","$(TARGET_DIR)$@")
+
+STRING_OBJS = strcat.o strchr.o strcmp.o strcpy.o strlen.o strncmp.o strncpy.o \
+	      strstr.o memset.o memcpy.o memmove.o memcmp.o
+%.o : $(SLOF_DIR)/lib/libc/string/%.c
+	$(call quiet-command,$(CC) $(LIBC_CFLAGS) -c -o $@ $<,"CC","$(TARGET_DIR)$@")
+
+STDLIB_OBJS = atoi.o atol.o strtoul.o strtol.o rand.o malloc.o free.o
+%.o : $(SLOF_DIR)/lib/libc/stdlib/%.c
+	$(call quiet-command,$(CC) $(LIBC_CFLAGS) -c -o $@ $<,"CC","$(TARGET_DIR)$@")
+
+STDIO_OBJS = sprintf.o vfprintf.o vsnprintf.o vsprintf.o fprintf.o \
+	     printf.o putc.o puts.o putchar.o stdchnls.o fileno.o
+%.o : $(SLOF_DIR)/lib/libc/stdio/%.c
+	$(call quiet-command,$(CC) $(LIBC_CFLAGS) -c -o $@ $<,"CC","$(TARGET_DIR)$@")
+
+sbrk.o: $(SLOF_DIR)/slof/sbrk.c
+	$(call quiet-command,$(CC) $(LIBC_CFLAGS) -c -o $@ $<,"CC","$(TARGET_DIR)$@")
+
+LIBCOBJS := $(STRING_OBJS) $(CTYPE_OBJS) $(STDLIB_OBJS) $(STDIO_OBJS) sbrk.o
+
+libc.a: $(LIBCOBJS)
+	$(call quiet-command,$(AR) -rc $@ $^,"AR","$(TARGET_DIR)$@")