commit fb3cf125d14f9ce5c7fbbb8774eb3d5f88f6344c Author: Matthew Dillon <dil...@apollo.backplane.com> Date: Mon May 28 19:58:03 2018 -0700
kernel - Add support for MosChip PCIe serial com, and console support * Add support for the MosChip PCIe serial com (brand is typically 'StarTech' 'Natikve PCI Express RS232 serial adapter card with 16550 UART'. * Add late console support. Console operation works the same way, set it up in /boot/loader.conf. Typically: sio0.flags=0x00 sio4.flags=0x30 sio4.baud=115200 #set boot_serial="YES" <-- commented out, do not set this Note that at the point a late-configured serial port wants to become the console, syscons is probably already the console, so you have to use flags 0x30 instead of 0x10 to force it to change the console. * Note, you do not have to set boot_serial="YES", because it won't really help since the adapter isn't accessible to the boot loader or to the kernel until the PCIe device probes in the middle of the boot sequence. * The kernel now retests for consoles at the end of its normal configuration sequence, which allows the now-available sioN devices from PCIe card(s) to become the console. * Remove syscons sccnterm() code that tried to undo the syscons console designation. This code was never called in the past because the system console couldn't actually change once selected. But now it can, and the code completely blows up syscons for numerous reasons. Just leave the console designation intact from syscons's point of view (the main system will be vectored elsewhere so syscons will simply not receive new kernel console reads and writes). * Add a siocntxwait() call before changing com parameters, since we are potentially changing the baud rate here. * Change how the SIO driver assigns baud rates for the console to handle late-console configurations. Also, allow sio*.baud variables in loader.conf to override the default com rate. * Add entries for com5 and com6 to /etc/remote, and default to a more reasonable baud rate of 115200. Summary of changes: etc/remote | 4 ++ sys/dev/misc/syscons/syscons.c | 17 +++++++ sys/dev/serial/sio/sio.c | 83 +++++++++++++++++++++++++------- sys/kern/tty_cons.c | 5 +- sys/platform/pc64/x86_64/autoconf.c | 42 ++-------------- sys/platform/vkernel64/x86_64/autoconf.c | 5 ++ 6 files changed, 98 insertions(+), 58 deletions(-) http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/fb3cf125d14f9ce5c7fbbb8774eb3d5f88f6344c -- DragonFly BSD source repository