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-rw-r--r--wirish/boards.cpp12
1 files changed, 7 insertions, 5 deletions
diff --git a/wirish/boards.cpp b/wirish/boards.cpp
index dbc308e..a693fa6 100644
--- a/wirish/boards.cpp
+++ b/wirish/boards.cpp
@@ -143,13 +143,10 @@ static void setup_clocks(void) {
* These addresses are where usercode starts when a bootloader is
* present. If no bootloader is present, the user NVIC usually starts
* at the Flash base address, 0x08000000.
- *
- * FIXME Let the build specify the vector table address numerically to
- * avoid having these magic values -- some people have been fixing up
- * the bootloader so it uses less space.
*/
#define USER_ADDR_ROM 0x08005000
#define USER_ADDR_RAM 0x20000C00
+extern char __text_start__;
static void setup_nvic(void) {
#ifdef VECT_TAB_FLASH
@@ -158,8 +155,13 @@ static void setup_nvic(void) {
nvic_init(USER_ADDR_RAM, 0);
#elif defined VECT_TAB_BASE
nvic_init((uint32)0x08000000, 0);
+#elif defined VECT_TAB_ADDR
+ // A numerically supplied value
+ nvic_init((uint32)VECT_TAB_ADDR, 0);
#else
-#error "You must select a base address for the vector table."
+ // Use the __text_start__ value from the linker script; this
+ // should be the start of the vector table.
+ nvic_init((uint32)&__text_start__, 0);
#endif
}