Only re-compile version.c as often as necessary

[proxmark3-svn] / armsrc / appmain.c

diff --git a/armsrc/appmain.c b/armsrc/appmain.c
index 59cc6dead3bf6a5bbbf99ad96c15dfae2cc640f7..72d8789e75af6a10637d82bbc2b401bb83a89371 100644 (file)
--- a/armsrc/appmain.c
+++ b/armsrc/appmain.c
@@ -238,17 +238,19 @@ void ReadMem(int addr)
 
 /* osimage version information is linked in */
 extern struct version_information version_information;
+/* bootrom version information is pointed to from _bootphase1_version_pointer */
+extern char _bootphase1_version_pointer, _flash_start, _flash_end;
 void SendVersion(void)
 {
        char temp[48]; /* Limited data payload in USB packets */
        DbpString("Prox/RFID mark3 RFID instrument");
        
-       /* Try to find the bootrom version information. For the time being, expect
-        * to find a pointer at address 0x1001fc, perform slight sanity checks on 
-        * the pointer, then use it.
+       /* Try to find the bootrom version information. Expect to find a pointer at 
+        * symbol _bootphase1_version_pointer, perform slight sanity checks on the
+        * pointer, then use it.
         */
-       void *bootrom_version = *(void**)0x1001fc;
-       if( bootrom_version < (void*)0x100000 || bootrom_version > (void*)0x101000 ) {
+       void *bootrom_version = *(void**)&_bootphase1_version_pointer;
+       if( bootrom_version < (void*)&_flash_start || bootrom_version >= (void*)&_flash_end ) {
                DbpString("bootrom version information appears invalid");
        } else {
                FormatVersionInformation(temp, sizeof(temp), "bootrom: ", bootrom_version);