4 commits

Author	SHA1	Message	Date
Colin Percival	7f166c931e	Use ACPI SPCR on x86 ... This takes the SPCR code currently in uart_cpu_arm64.c, moves it into a new uart_cpu_acpi.c (with some associated refactoring), and uses it from both arm64 and x86. An SPCR serial port address AccessWidth field value of 0 ("reserved") is now treated as 1 ("byte access") in order to work around a buggy SPCR table on Amazon EC2 i3.metal instances. Reviewed by: manu, Greg V MFC after: 3 days Sponsored by: https://www.patreon.com/cperciva Differential Revision: https://reviews.freebsd.org/D20357	2019-05-23 19:55:53 +00:00
Matt Macy	381388b9c4	add snps IP uart support / genaralize UART ... This is an amalgam of a patch by Doug Ambrisko to generalize uart_acpi_find_device, imp moving the ACPI table to uart_dev_ns8250.c and advice by jhb to work around a bug in the EPYC 3151 BIOS (the BIOS incorrectly marks the serial ports as disabled) Reviewed by: imp MFC after: 8 weeks Differential Revision: https://reviews.freebsd.org/D16432	2018-08-19 21:10:21 +00:00
Andrew Turner	eba1a249df	Add support to find the arm64 serial using the ACPI tables. This uses the ... Serial Port Console Redirection Table to find the device to use. Obtained from: ABT Systems Ltd Sponsored by: The FreeBSD Foundation	2016-11-21 19:26:58 +00:00
Andrew Turner	cf9df3c56b	Add support for arm64 to uart_dev_acpi by using the _HID property to find ... the uart class to use in a similar way as the fdt driver. Obtained from: ABT Systems Ltd MFC after: 1 month Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D7248	2016-07-21 09:32:55 +00:00