software: create liblitescard and move sdcard init/test code to it.

litex/soc/integration/builder.py

@@ -27,6 +27,7 @@ soc_software_packages = [
     "libbase",
     "liblitedram",
     "libliteeth",
+    "liblitesdcard",
     "bios"
 ]
 

litex/soc/software/bios/Makefile

@@ -11,18 +11,17 @@ CFLAGS += -DTFTP_SERVER_PORT=$(TFTP_SERVER_PORT)
 endif
 
 OBJECTS = isr.o			\
-	  sdcard.o			\
-	  main.o			\
 	  boot-helper.o		\
 	  boot.o			\
 	  helpers.o			\
 	  cmd_bios.o		\
+	  cmd_mem.o			\
 	  cmd_boot.o		\
+	  cmd_spiflash.o	\
 	  cmd_litedram.o	\
 	  cmd_liteeth.o		\
-	  cmd_mem.o	        \
-	  cmd_litesdcard.o	\
-	  cmd_spiflash.o	\
+	  cmd_litesdcard.o  \
+	  main.o
 
 ifneq "$(or $(TERM_NO_COMPLETE),$(TERM_MINI))" ""
 CFLAGS += -DTERM_NO_COMPLETE
@@ -62,7 +61,8 @@ bios.elf: $(BIOS_DIRECTORY)/linker.ld $(OBJECTS)
 	../libcompiler_rt/libcompiler_rt.a \
 	../libbase/libbase-nofloat.a \
 	../liblitedram/liblitedram.a \
-	../libliteeth/libliteeth.a
+	../libliteeth/libliteeth.a \
+	../liblitesdcard/liblitesdcard.a
 	$(LD) $(LDFLAGS) -T $(BIOS_DIRECTORY)/linker.ld -N -o $@ \
 		../libbase/crt0-ctr.o \
 		$(OBJECTS) \
@@ -70,8 +70,9 @@ bios.elf: $(BIOS_DIRECTORY)/linker.ld $(OBJECTS)
 		-L../libbase \
 		-L../liblitedram \
 		-L../libliteeth \
+		-L../liblitesdcard \
 		$(BP_LIBS) \
-		-lcompiler_rt -lbase-nofloat -llitedram -lliteeth \
+		-lcompiler_rt -lbase-nofloat -llitedram -lliteeth -llitesdcard \
 		$(BP_FLAGS)
 
 ifneq ($(OS),Windows_NT)

litex/soc/software/bios/commands/cmd_litedram.c

@@ -5,9 +5,10 @@
 
 #include <generated/csr.h>
 
+#include "sdram.h"
+
 #include "../command.h"
 #include "../helpers.h"
-#include "../sdram.h"
 
 /**
  * Command "sdrrow"

litex/soc/software/bios/commands/cmd_litesdcard.c

@@ -5,9 +5,10 @@
 
 #include <generated/csr.h>
 
+#include "sdcard.h"
+
 #include "../command.h"
 #include "../helpers.h"
-#include "../sdcard.h"
 
 /**
  * Command "sdclk"

litex/soc/software/common.mak

@@ -51,7 +51,8 @@ INCLUDES = -I$(SOC_DIRECTORY)/software/include/base \
            -I$(BUILDINC_DIRECTORY) \
            -I$(CPU_DIRECTORY) \
            -I$(SOC_DIRECTORY)/software/liblitedram \
-           -I$(SOC_DIRECTORY)/software/libliteeth
+           -I$(SOC_DIRECTORY)/software/libliteeth \
+           -I$(SOC_DIRECTORY)/software/liblitesdcard
 COMMONFLAGS = $(DEPFLAGS) -Os $(CPUFLAGS) -g3 -fomit-frame-pointer -Wall -fno-builtin -nostdinc $(INCLUDES)
 CFLAGS = $(COMMONFLAGS) -fexceptions -Wstrict-prototypes -Wold-style-definition -Wmissing-prototypes
 CXXFLAGS = $(COMMONFLAGS) -std=c++11 -I$(SOC_DIRECTORY)/software/include/basec++ -fexceptions -fno-rtti -ffreestanding

litex/soc/software/liblitesdcard/Makefile

@@ -0,0 +1,23 @@
+include ../include/generated/variables.mak
+include $(SOC_DIRECTORY)/software/common.mak
+
+OBJECTS=sdcard.o
+
+all: liblitesdcard.a
+
+liblitesdcard.a: $(OBJECTS)
+	$(AR) crs liblitesdcard.a $(OBJECTS)
+
+# pull in dependency info for *existing* .o files
+-include $(OBJECTS:.o=.d)
+
+%.o: $(LIBLITESDCARD_DIRECTORY)/%.c
+	$(compile)
+
+%.o: %.S
+	$(assemble)
+
+.PHONY: all clean
+
+clean:
+	$(RM) $(OBJECTS) liblitesdcard.a .*~ *~