From deeefd2e53795500ebb2afcc0b4d97e84eb7f7e9 Mon Sep 17 00:00:00 2001
From: Pixel <pixel@nobis-crew.org>
Date: Sat, 29 Jan 2011 19:58:11 -0800
Subject: Adding sample code for the romfs into the demo, and into the
 makefile.

---
 Makefile            |  8 ++++++++
 arch/config.mk      |  1 +
 config/toolchain.mk |  3 +++
 demo.c              | 20 +++++++++++++++-----
 os/src/romfs.c      |  1 +
 test-romfs/test.txt |  1 +
 tools/mkromfs.c     | 12 +++++++-----
 7 files changed, 36 insertions(+), 10 deletions(-)
 create mode 100644 test-romfs/test.txt

diff --git a/Makefile b/Makefile
index d2b5619..194079c 100644
--- a/Makefile
+++ b/Makefile
@@ -2,6 +2,8 @@ TARGET = demo.bin
 LIBDEPS = FreeRTOS/libFreeRTOS.a arch/libarch.a os/libos.a
 LIBS = -Wl,--start-group -lc $(LIBDEPS) -Wl,--end-group
 
+TARGET_SRCS = test-romfs.o
+
 export ROOTDIR = $(CURDIR)
 
 include common.mk
@@ -38,6 +40,12 @@ tools:
 	$(E) "[MAKE]   Entering tools"
 	$(Q)$(MAKE) $(MAKE_OPTS) -C tools
 
+test-romfs.o: tools
+	$(E) "[ROMFS]  Building test romfs"
+	$(Q) tools/mkromfs -d test test-romfs.bin
+	$(Q) $(TARGET_OBJCOPY_BIN) --prefix-sections '.romfs' test-romfs.bin test-romfs.o
+	$(Q)$(MAKE) $(MAKE_OPTS) -C tools
+
 include FreeRTOS/config.mk
 include arch/config.mk
 include os/config.mk
diff --git a/arch/config.mk b/arch/config.mk
index 2e59ef6..94ea88e 100644
--- a/arch/config.mk
+++ b/arch/config.mk
@@ -1,4 +1,5 @@
 ifeq ($(CPU),arm)
+TARGET_INCLUDES += $(ROOTDIR)/arch/arm/include
 ifeq ($(CPU_FLAVOR),lpc1768)
 TARGET_INCLUDES += $(ROOTDIR)/arch/arm/lpc17xx/Core/CM3/DeviceSupport/NXP/LPC17xx $(ROOTDIR)/arch/arm/lpc17xx/Core/CM3/CoreSupport $(ROOTDIR)/arch/arm/lpc17xx/Drivers/include $(ROOTDIR)/arch/arm/lpc17xx/mbed
 LDSCRIPT = $(ROOTDIR)/arch/arm/lpc17xx/ldscript
diff --git a/config/toolchain.mk b/config/toolchain.mk
index 4e58227..ee9d5b5 100644
--- a/config/toolchain.mk
+++ b/config/toolchain.mk
@@ -1,5 +1,6 @@
 ifeq ($(CPU),arm)
 TOOLCHAIN = arm-none-eabi
+TARGET_FORMAT = elf32-littlearm
 ifeq ($(CPU_FLAVOR),lpc1768)
 TARGET_CPPFLAGS += -mcpu=cortex-m3 -mtune=cortex-m3 -D__thumb2__=1 -march=armv7-m -mfix-cortex-m3-ldrd
 endif
@@ -14,3 +15,5 @@ TARGET_RANLIB = $(TOOLCHAIN)-ranlib
 TARGET_AR = $(TOOLCHAIN)-ar
 TARGET_AS = $(TOOLCHAIN)-gcc
 TARGET_OBJCOPY = $(TOOLCHAIN)-objcopy
+
+TARGET_OBJCOPY_BIN = $(TARGET_OBJCOPY) -I binary -O $(TARGET_FORMAT) --binary-architecture $(CPU)
diff --git a/demo.c b/demo.c
index cde181a..fbf2b26 100644
--- a/demo.c
+++ b/demo.c
@@ -6,6 +6,7 @@
 #include <osdebug.h>
 #include <stdio.h>
 #include <fio.h>
+#include <romfs.h>
 
 #define LED1_wire 18
 #define LED2_wire 20
@@ -62,16 +63,25 @@ static void badTask(void *x) {
 
 static const char msg[] = "Hello world - from fwrite!\r\n";
 
+extern uint8_t _binary_test_romfs_bin_start[];
+
 int main() {
-    FILE * f;
+    FILE * f1, * f2;
+    char buf[32];
+    int c;
     register_devfs();
+    register_romfs("romfs", _binary_test_romfs_bin_start);
     handle = xSemaphoreCreateMutex();
     printf("Hello world - from stdio!\r\n");
     fflush(stdout);
-    f = fopen("/dev/stdout", "w");
-    fwrite(msg, 1, sizeof(msg), f);
-    fflush(f);
-    fclose(f);
+    f1 = fopen("/dev/stdout", "w");
+    fwrite(msg, 1, sizeof(msg), f1);
+    f2 = fopen("/romfs/test.txt", "r");
+    c = fread(buf, 1, 32, f2);
+    fwrite(buf, 1, c, f1);
+    fflush(f1);
+    fclose(f1);
+    fclose(f2);
     setupLEDs();
     litLED(1, 0);
     litLED(2, 0);
diff --git a/os/src/romfs.c b/os/src/romfs.c
index 403bef9..270fb54 100644
--- a/os/src/romfs.c
+++ b/os/src/romfs.c
@@ -90,5 +90,6 @@ static int romfs_open(void * opaque, const char * path, int flags, int mode) {
 }
 
 void register_romfs(const char * mountpoint, const uint8_t * romfs) {
+    DBGOUT("Registering romfs `%s' @ %p\r\n", mountpoint, romfs);
     register_fs(mountpoint, romfs_open, (void *) romfs);
 }
diff --git a/test-romfs/test.txt b/test-romfs/test.txt
new file mode 100644
index 0000000..7fe3486
--- /dev/null
+++ b/test-romfs/test.txt
@@ -0,0 +1 @@
+Romfs test
diff --git a/tools/mkromfs.c b/tools/mkromfs.c
index be46a44..c3b43e0 100644
--- a/tools/mkromfs.c
+++ b/tools/mkromfs.c
@@ -21,7 +21,7 @@ void usage(const char * binname) {
     exit(-1);
 }
 
-void processdir(DIR * dirp, const char * curpath, FILE * outfile) {
+void processdir(DIR * dirp, const char * curpath, FILE * outfile, const char * prefix) {
     char fullpath[1024];
     char buf[16 * 1024];
     struct dirent * ent;
@@ -32,7 +32,9 @@ void processdir(DIR * dirp, const char * curpath, FILE * outfile) {
     FILE * infile;
 
     while ((ent = readdir(dirp))) {
-        strcpy(fullpath, curpath);
+        strcpy(fullpath, prefix);
+        strcat(fullpath, "/");
+        strcat(fullpath, curpath);
         strcat(fullpath, ent->d_name);
         switch(ent->d_type) {
         case DT_DIR:
@@ -42,7 +44,7 @@ void processdir(DIR * dirp, const char * curpath, FILE * outfile) {
                 continue;
             strcat(fullpath, "/");
             rec_dirp = opendir(fullpath);
-            processdir(rec_dirp, fullpath, outfile);
+            processdir(rec_dirp, fullpath, outfile, prefix);
             closedir(rec_dirp);
             break;
         case DT_REG:
@@ -90,7 +92,7 @@ int main(int argc, char ** argv) {
             o++;
             switch (*o) {
             case 'd':
-                dirname = o;
+                dirname = *argv++;
                 break;
             default:
                 usage(binname);
@@ -119,7 +121,7 @@ int main(int argc, char ** argv) {
         exit(-1);
     }
 
-    processdir(dirp, "", outfile);
+    processdir(dirp, "", outfile, dirname);
     fwrite(&z, 1, 8, outfile);
     if (outname)
         fclose(outfile);
-- 
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