OpenE2K/qemu-e2k
13
4
Fork 0
Code Issues 4 Pull Requests Projects 2 Releases Activity

hw/char/escc: Implement loopback mode

Browse Source 
The firmware of the m68k next-cube machine uses the loopback mode
for self-testing the hardware and currently fails during this step.
By implementing the loopback mode, we can make the firmware pass
to the next step.

Signed-off-by: Thomas Huth <huth@tuxfamily.org>
Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230716153519.31722-1-huth@tuxfamily.org>
This commit is contained in:
Thomas Huth 2023-07-16 17:35:19 +02:00 committed by Philippe Mathieu-Daudé
parent 5fc1a68660
commit 02388b5925
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
hw/char/escc.c
View File

@ -653,7 +653,9 @@ static void escc_mem_write(void *opaque, hwaddr addr,
escc_update_irq(s); escc_update_irq(s);
s->tx = val; s->tx = val;
if (s->wregs[W_TXCTRL2] & TXCTRL2_TXEN) { /* tx enabled */ if (s->wregs[W_TXCTRL2] & TXCTRL2_TXEN) { /* tx enabled */
if (qemu_chr_fe_backend_connected(&s->chr)) { if (s->wregs[W_MISC2] & MISC2_LCL_LOOP) {
serial_receive_byte(s, s->tx);
} else if (qemu_chr_fe_backend_connected(&s->chr)) {
/* /*
* XXX this blocks entire thread. Rewrite to use * XXX this blocks entire thread. Rewrite to use
* qemu_chr_fe_write and background I/O callbacks * qemu_chr_fe_write and background I/O callbacks