changeset 1fbc4a0427f0 in /z/repo/gem5
details: http://repo.gem5.org/gem5?cmd=changeset;node=1fbc4a0427f0
description:
arm: Fix a GIC mask register bug
This resulted in a kernel printk that said,
"GIC CPU mask not found - kernel will fail to boot."
diffstat:
src/dev/arm/gic_pl390.cc | 9 +++++++--
1 files changed, 7 insertions(+), 2 deletions(-)
diffs (24 lines):
diff -r 2efeed2cef09 -r 1fbc4a0427f0 src/dev/arm/gic_pl390.cc
--- a/src/dev/arm/gic_pl390.cc Thu Oct 17 10:20:45 2013 -0500
+++ b/src/dev/arm/gic_pl390.cc Thu Oct 17 10:20:45 2013 -0500
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2010 ARM Limited
+ * Copyright (c) 2010, 2013 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
@@ -232,7 +232,12 @@
}
} else {
assert(ctx_id < sys->numRunningContexts());
- pkt->set<uint32_t>(ctx_id);
+ // convert the CPU id number into a bit mask
+ uint32_t ctx_mask = power(2, ctx_id);
+ // replicate the 8-bit mask 4 times in a 32-bit word
+ ctx_mask |= ctx_mask << 8;
+ ctx_mask |= ctx_mask << 16;
+ pkt->set<uint32_t>(ctx_mask);
}
goto done;
}
_______________________________________________
gem5-dev mailing list
[email protected]
http://m5sim.org/mailman/listinfo/gem5-dev
