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| author | Gabe Black <gblack@eecs.umich.edu> | 2010-10-09 12:41:31 -0700 |
|---|---|---|
| committer | Gabe Black <gblack@eecs.umich.edu> | 2010-10-09 12:41:31 -0700 |
| commit | 9268f895d522a10f176099218df35bfe9111b7a9 (patch) | |
| tree | e1e421565b19168a8d54ff4816032d6246bcfadb /src/dev/uart8250.cc | |
| parent | d4492190e6bbf709724af28d262b0a681c975ec0 (diff) | |
| download | gem5-9268f895d522a10f176099218df35bfe9111b7a9.tar.xz | |
UART: Make the 8250's MCR return a deterministic value.
This change makes the 8250 device return the value it has for the MCR when
read instead of leaving the packet data unmodified/uninitialized. The value
the UART has for the MCR may not be right, but that's a seperate issue that
apparently hasn't caused any problems to date.
Diffstat (limited to 'src/dev/uart8250.cc')
| -rw-r--r-- | src/dev/uart8250.cc | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/dev/uart8250.cc b/src/dev/uart8250.cc index 2bbcf2683..f8bd23311 100644 --- a/src/dev/uart8250.cc +++ b/src/dev/uart8250.cc @@ -161,6 +161,7 @@ Uart8250::read(PacketPtr pkt) pkt->set(LCR); break; case 0x4: // Modem Control Register (MCR) + pkt->set(MCR); break; case 0x5: // Line Status Register (LSR) uint8_t lsr; |