Changeset b0afac0 in rtems_waf

Timestamp:

06/15/16 01:14:16 (7 years ago)

Author:

Chris Johns <chrisj@…>

Branches:

8151754a5d6efd9b6be4d728f3633dc6a63672a9

Children:

1aef190

Parents:

93e5545

Message:

Add root_filesystem support to create a root file system.

To use add to your wscript file:

rtems.root_filesystem(bld, 'rootfs',

etc/rc.conf?,
'rootfs.tar', 'rootfs-tar.o')

to create a rootfs-tar.o which you add to your executable's list of
sources.

In your main or Init function add:

#include <rtems/untar.h>
extern int _binary_rootfs_tar_start;
extern int _binary_rootfs_tar_size;
static void expand_rootfs_tarfile(void)
{

rtems_status_code sc;
rtems_printer printer;
rtems_print_printer_printf(&printer);
sc = Untar_FromMemory_Print((void *)(&_binary_rootfs_tar_start),

(size_t)&_binary_rootfs_tar_size,
&printer);

if (sc != RTEMS_SUCCESSFUL)

fprintf(stderr, "error: untar failed: %s\n", rtems_status_text(sc));

}

Note, some arch's may not need the '_' at the start of the tar symbols.

File:

• rtems.py (modified) (3 diffs)

rtems.py

@@ -222 +222 @@
         conf.env.LINKFLAGS = cflags['cflags'] + ldflags['ldflags']
         conf.env.LIB       = flags['LIB']
+        conf.env.LIBPATH   = ldflags['libpath']
 
         conf.env.RTRACE_WRAPPER_ST = '-W %s'
@@ -514 +515 @@
     return None
 
+def root_filesystem(bld, name, files, tar, obj):
+    bld(name = name + '_tar',
+        target = tar,
+        source = files,
+        rule = 'SDIR=$PWD && cd ../.. && tar --format=ustar -cf $SDIR/${TGT} $(echo "${SRC}" | sed -e "s/\.\.\/\.\.\///\")')
+    bld.objects(name = name,
+                target = obj,
+                source = tar,
+                rule = '${OBJCOPY} -I binary -B ${RTEMS_ARCH} ${OBJCOPY_FLAGS} ${SRC} ${TGT}')
+
 def clone_tasks(bld):
     if bld.cmd == 'build':
@@ -714 +725 @@
         [ { 'key': 'warnings', 'path': False, 'flags': { '-W': 1 }, 'cflags': False, 'lflags': False },
           { 'key': 'includes', 'path': True,  'flags': { '-I': 1, '-isystem': 2, '-sysroot': 2 } },
+          { 'key': 'libpath',  'path': True,  'flags': { '-L': 1 } },
           { 'key': 'machines', 'path': True,  'flags': { '-O': 1, '-m': 1, '-f': 1 } },
           { 'key': 'specs',    'path': True,  'flags': { '-q': 1, '-B': 2, '--specs': 2 } } ]