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Diffstat (limited to 'bsps/m68k/mcf5225x/start/init5225x.c')
-rw-r--r--bsps/m68k/mcf5225x/start/init5225x.c84
1 files changed, 84 insertions, 0 deletions
diff --git a/bsps/m68k/mcf5225x/start/init5225x.c b/bsps/m68k/mcf5225x/start/init5225x.c
new file mode 100644
index 0000000000..caf7db1953
--- /dev/null
+++ b/bsps/m68k/mcf5225x/start/init5225x.c
@@ -0,0 +1,84 @@
+/*
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rtems.org/license/LICENSE.
+ *
+ * This is where the real hardware setup is done. A minimal stack
+ * has been provided by the start.S code. No normal C or RTEMS
+ * functions can be called from here.
+ */
+
+#include <bsp.h>
+#include <bsp/bootcard.h>
+
+extern void _wr_vbr(uint32_t);
+
+extern long _d0_reset,_d1_reset,_M68kSpuriousInterruptCount;
+
+/*
+ * From linkcmds
+ */
+
+extern uint8_t _INTERRUPT_VECTOR[];
+
+extern uint8_t _clear_start[];
+extern uint8_t _clear_end[];
+
+extern uint8_t _data_src_start[];
+extern uint8_t _data_dest_start[];
+extern uint8_t _data_dest_end[];
+
+void Init5225x(void)
+{
+ register uint32_t i;
+ register uint32_t *dp, *sp;
+ register uint8_t *dbp, *sbp;
+
+ /*
+ * Copy the vector table to RAM
+ */
+
+ if (&_VBR != (void *)_INTERRUPT_VECTOR) {
+ sp = (uint32_t *) _INTERRUPT_VECTOR;
+ dp = (uint32_t *) &_VBR;
+ for (i = 0; i < 256; i++) {
+ *dp++ = *sp++;
+ }
+ }
+
+ /*
+ * Move initialized data from ROM to RAM.
+ */
+ if (_data_src_start != _data_dest_start) {
+ dbp = (uint8_t *) _data_dest_start;
+ sbp = (uint8_t *) _data_src_start;
+ i = _data_dest_end - _data_dest_start;
+ while (i--)
+ *dbp++ = *sbp++;
+ }
+
+ asm __volatile__ ("move.l %%d5,%0\n\t":"=r" (_d0_reset));
+ asm __volatile__ ("move.l %%d6,%0\n\t":"=r" (_d1_reset));
+
+ /*
+ * Zero uninitialized data
+ */
+
+ if (_clear_start != _clear_end) {
+ sbp = _clear_start;
+ dbp = _clear_end;
+ i = dbp - sbp;
+ while (i--)
+ *sbp++ = 0;
+ }
+
+//_wr_vbr((uint32_t) &_VBR);
+ asm volatile("move.l %0,%%d7;movec %%d7,%%vbr\n\t"::"i"(&_VBR): "cc");
+
+ /*
+ * We have to call some kind of RTEMS function here!
+ */
+
+ boot_card(0);
+ for (;;) ;
+}