This updates the implementation of the LEON3 processor power-down
function.
It now contains the workaround for the GR712RC power-down errata
described in GR712RC-UM, version 2.16, section 1.7.8. The workaround is
compatible with other LEON3/LEON4 components.
Update #4875.
---
bsps/sparc/leon3/start/bspidle.S | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/bsps/sparc/leon3/start/bspidle.S b/bsps/sparc/leon3/start/bspidle.S
index 82c04a231d..cbba6dda78 100644
--- a/bsps/sparc/leon3/start/bspidle.S
+++ b/bsps/sparc/leon3/start/bspidle.S
@@ -34,14 +34,24 @@
#include <rtems/asm.h>
-/* LEON specific power-down function */
+/*
+ * LEON specific power-down function
+ *
+ * This implementation contains the workaround for the GR712RC
+ * power-down errata described in GR712RC-UM, version 2.16, section
+ * 1.7.8. The workaround is compatible with other LEON3 components.
+ */
.align 4
PUBLIC(bsp_idle_thread)
PUBLIC(leon3_power_down_loop)
SYM(bsp_idle_thread):
SYM(leon3_power_down_loop):
-pwdloop: mov %g0, %asr19
- lda [%sp] 1, %g0 ! Needed for UT699 and GR712
+pwdloop:
+ set 0xfffffff0, %o0
+ .align 32
+ mov %g0, %asr19
+ lda [%o0] 0x1c, %g0
+ .align 32
ba,a pwdloop
nop
--
2.34.1
_______________________________________________
devel mailing list
devel@rtems.org
http://lists.rtems.org/mailman/listinfo/devel
