coreboot-kgpe-d16/payloads/libpayload/drivers/serial
Nico Huber e6b0a32cb3 libpayload: Make 8250 UART driver relocation safe
`lib_sysinfo->serial` is a virtual pointer into coreboot tables.
It's not valid across relocation. Accessing the wrong value during
relocation of FILO resulted in a hang with DEBUG_SEGMENT and UART
console enabled. Work around that by caching the whole table entry
locally.

An alternative would be to revise `sysinfo`, to contain no virtual
pointers to anything outside the payload.

Change-Id: I03adaf57b83a177316d7778f7e06df8eb6f9158e
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37513
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Reto Buerki <reet@codelabs.ch>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
2020-04-20 10:09:59 +00:00
..
8250.c libpayload: Make 8250 UART driver relocation safe 2020-04-20 10:09:59 +00:00
ipq40xx.c
ipq806x.c
qcom_qupv3_serial.c
qcs405.c
s5p.c
serial.c