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opnsense-src/sys/dev/uart
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Warner Losh a113f9dd98 uart: Support EARLY_PRINTF on x86 for port-mapped COM ports 
Support early printf for the ns8250 uart driver. Adding
	options UART_NS8250_EARLY_PORT=0xYYY
	options EARLY_PRINTF
to your kernel config will enable it. The code is rather simple minded,
so caveat emptor. This will enable printf before cninit. cninit
automatically disables this and switches to the real routine. It only
works for port-mapped COM ports, and only if you know the port's address
at compile time. It's intended for be a debugging aide, not a general
purpose thing.

Sponsored by:		Netflix
Reviewed by:		emaste
Differential Revision:	https://reviews.freebsd.org/D42306
2023-10-20 16:07:24 -06:00
..
uart.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
uart_bus.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
uart_bus_acpi.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_bus_fdt.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_bus_isa.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_bus_pci.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_bus_puc.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_bus_scc.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_core.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_cpu.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
uart_cpu_acpi.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_cpu_acpi.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
uart_cpu_arm64.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_cpu_fdt.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_cpu_fdt.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
uart_cpu_powerpc.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_cpu_x86.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_dbg.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_dev_imx.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_dev_imx.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
uart_dev_lowrisc.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_dev_lowrisc.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
uart_dev_msm.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_dev_msm.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
uart_dev_mu.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_dev_mvebu.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_dev_ns8250.c uart: Support EARLY_PRINTF on x86 for port-mapped COM ports 2023-10-20 16:07:24 -06:00
uart_dev_ns8250.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
uart_dev_pl011.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_dev_quicc.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_dev_snps.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_dev_ti8250.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_dev_z8530.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_if.m sys: Remove $FreeBSD$: one-line sh pattern 2023-08-16 11:54:58 -06:00
uart_ppstypes.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
uart_subr.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
uart_tty.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00