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path: root/src/soc/broadcom/cygnus/ns16550.c
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2018-02-21driver/uart: Introduce a way for mainboard to override the baudrateJulien Viard de Galbert
The rationale is to allow the mainboard to override the default baudrate for instance by sampling GPIOs at boot. A new configuration option is available for mainboards to select this behaviour. It will then have to define the function get_uart_baudrate to return the computed baudrate. Change-Id: I970ee788bf90b9e1a8c6ccdc5eee8029d9af0ecc Signed-off-by: Julien Viard de Galbert <jviarddegalbert@online.net> Reviewed-on: https://review.coreboot.org/23713 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2017-09-23mb/*/*: Remove rtc nvram configurable baud rateArthur Heymans
There have been discussions about removing this since it does not seem to be used much and only creates troubles for boards without defaults, not to mention that it was configurable on many boards that do not even feature uart. It is still possible to configure the baudrate through the Kconfig option. Change-Id: I71698d9b188eeac73670b18b757dff5fcea0df41 Signed-off-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-on: https://review.coreboot.org/19682 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de>
2017-05-18uart: Fix bug in {uart8250, uart8250_mem, ns16550}_rx_byte functionsWerner Zeh
We have several different UART implementations of which three support a timeout when receiving characters. In all of these three implementations there is a bug where when the timeout is hit the last received character will be returned instead of the needed 0. The problem is that the timeout variable i is decremented after it has been checked in the while-loop. That leads to the fact that when the while-loop is aborted due to a timeout i will contain 0xffffffff and not 0. Thus in turn will fool the following if-statement leading to wrong return value to the caller in this case. Therefore the caller will see a received character event if there is none. Change-Id: I23ff531a1e729e816764f1a071484c924dcb0f85 Signed-off-by: Werner Zeh <werner.zeh@siemens.com> Reviewed-on: https://review.coreboot.org/19731 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2016-02-21soc/*: fix uart's regwidth specification in cbtablesPatrick Georgi
coreboot passes information about the serial port implementation to payloads through a cbtables entry. We set the register width to 1 on most SoCs because that looked as good a default as any, but checking the uart structs they use, it's 4 for all of them. Change-Id: I9848f79737106dc32f864ca901c0bc48f489e6b8 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: https://review.coreboot.org/13746 Tested-by: build bot (Jenkins) Reviewed-by: Julius Werner <jwerner@chromium.org>
2015-10-31tree: drop last paragraph of GPL copyright headerPatrick Georgi
It encourages users from writing to the FSF without giving an address. Linux also prefers to drop that and their checkpatch.pl (that we imported) looks out for that. This is the result of util/scripts/no-fsf-addresses.sh with no further editing. Change-Id: Ie96faea295fe001911d77dbc51e9a6789558fbd6 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/11888 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2015-05-21Remove address from GPLv2 headersPatrick Georgi
As per discussion with lawyers[tm], it's not a good idea to shorten the license header too much - not for legal reasons but because there are tools that look for them, and giving them a standard pattern simplifies things. However, we got confirmation that we don't have to update every file ever added to coreboot whenever the FSF gets a new lease, but can drop the address instead. util/kconfig is excluded because that's imported code that we may want to synchronize every now and then. $ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *MA[, ]*02110-1301[, ]*USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 59 Temple Place[-, ]*Suite 330, Boston, MA *02111-1307[, ]*USA:Foundation, Inc.:" {} + $ find * -type f -exec sed -i "s:Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.:Foundation, Inc.:" {} + $ find * -type f -a \! -name \*.patch \ -a \! -name \*_shipped \ -a \! -name LICENSE_GPL \ -a \! -name LGPL.txt \ -a \! -name COPYING \ -a \! -name DISCLAIMER \ -exec sed -i "/Foundation, Inc./ N;s:Foundation, Inc.* USA\.* *:Foundation, Inc. :;s:Foundation, Inc. $:Foundation, Inc.:" {} + Change-Id: Icc968a5a5f3a5df8d32b940f9cdb35350654bef9 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/9233 Tested-by: build bot (Jenkins) Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
2015-04-21broadcom/cygnus: Fix missing writel->write32 transformationPatrick Georgi
cygnus' serial driver wasn't part of the tree when the big transformation was done, so follow up. Change-Id: Ic1a53bea9bcaf1e568b50b9c2ad7782e65e36328 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/9852 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-04-20purin: add ns16550 driverDaisuke Nojiri
BUG=chrome-os-partner:35807 BRANCH=broadcom-firmware TEST=booted b0 board. messages printed on console: coreboot-bcf5dc0-dirty bootblock Mon Feb 9 13:33:55 PST 2015 starting... Exception handlers installed. Change-Id: I271ead2f4fe48b809fd311acd5a27a675dce549e Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: ddff8fb170e775a121150fce065410d2925ad18c Original-Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org> Original-Change-Id: Ia6e82fa89547d61745c1473f723897dc3c1296ef Original-Reviewed-on: https://chromium-review.googlesource.com/251301 Original-Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-on: http://review.coreboot.org/9765 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>
2015-04-20console: copy ns16550 driver from u-bootDaisuke Nojiri
BUG=chrome-os-partner:35807 BRANCH=broadcom-firmware TEST=none Change-Id: I40623e92f290e5c584a451d99071316b6fc35431 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 505720f734da7a4cdfaff8b2531385644141ba83 Original-Change-Id: I655c7065047971ab05a13e90ab911d7464a37552 Original-Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/251300 Original-Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-on: http://review.coreboot.org/9764 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>