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| author | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | 2021-11-18 18:18:34 +0000 |
|---|---|---|
| committer | Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> | 2021-11-21 09:56:52 +0000 |
| commit | c29cd47e82df0bc7385cdd49a158d838314daa9e (patch) | |
| tree | e17b19d26b3694212bc4babee384ba119053e968 /hw/char/pl011.c | |
| parent | 8627edfb3f1fca24a96a0954148885c3241c10f8 (diff) | |
escc: always set STATUS_TXEMPTY in R_STATUS on device reset
The "Transmit Interrupts and Transmit Buffer Empty Bit" section of the ESCC
datasheet states the following about the STATUS_TXEMPTY bit: "After a hardware
reset (including a hardware reset by software), or a channel reset, this bit
is set to 1".
Update escc_reset() to set the STATUS_TXEMPTY bit in the R_STATUS register
on device reset as described which fixes a regression whereby the Sun PROM
checks this bit early on startup and gets stuck in an infinite loop if it is
not set.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-Id: <20211118181835.18497-2-mark.cave-ayland@ilande.co.uk>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/char/pl011.c')
0 files changed, 0 insertions, 0 deletions