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path: root/src/drivers/uart
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2014-04-30console: Drop EARLY_CONSOLE optionKyösti Mälkki
We have means to easily disable a specific console in romstage if necessary, so this global option makes little sense. The option was initially introduced as a work-around for build issues around CACHE_AS_RAM, ROMCC and ARCH_ARMV7 dependencies for UARTs. Change-Id: I797bdd11a48ddd813d3ee7ccef9a0c050f16f669 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5607 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-04-30uart: Support multiple portsKyösti Mälkki
The port for console remains to be a compile time constant. The Kconfig option is changed to select an UART port with index to avoid putting map of UART base addresses in Kconfigs. With this change it is possible to have other than debug console on different UART port. Change-Id: Ie1845a946f8d3b2604ef5404edb31b2e811f3ccd Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5342 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks <dhendrix@chromium.org> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-04-26uart8250io: Fix build with DEBUG_SMIKyösti Mälkki
Change-Id: I5110af348d22c0abc940f0922854fdd7e0c7e2e9 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5574 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@google.com>
2014-04-18console: Drop driver list in ramstageKyösti Mälkki
This framework was only available in ramstage. So we had to define console output functions separately for bootblock, romstage and SMM. Follow-up patches will re-enable all the consoles removed here, in a more flexible fashion, and with less lines-of-code and copy-paste. Also the driver list is not in a well-defined order and some of the loops could exit without visiting all drivers. NOTE: This build has no console in ramstage. Change-Id: Iaddc495aaca37e2a6c2c3f802a0dba27bf227a3e Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5337 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2014-04-09OxPCIe uart: Move under drivers/uartKyösti Mälkki
This driver is only a thin shell for uart8250mem and we could extend it with further compatible PCI IDs from other vendors/brands. Change-Id: Ic115b1baa0be0dbaa81e4a17a2e466019d3f4a67 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5329 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-04-09uart: Redefine Kconfig optionsKyösti Mälkki
Option DRIVERS_UART builds with support for UART hardware. Option CONSOLE_SERIAL enables the console output for UART. Those x86 boards that do not have serial port on SuperIO should select NO_UART_ON_SUPERIO to disable 8250 UART for the default configuration. Removes: CONSOLE_SERIAL_UART HAVE_UART_IO_MAPPED HAVE_UART_MEMORY_MAPPED Renames: CONSOLE_SERIAL8250 -> DRIVERS_UART_8250IO CONSOLE_SERIAL8250MEM -> DRIVERS_UART_8250MEM Change-Id: Id3afa05f85c0d6849746886db8b6c2ed6c846b61 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5311 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2014-04-09console uart: Fill coreboot table entriesKyösti Mälkki
Also fixes the reported baudrate to take get_option() into account. Change-Id: Ieadad70b00df02a530b0ccb6fa4e1b51526089f3 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5310 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com> Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-04-09uart: Prepare to support multiple base addressesKyösti Mälkki
Prepare low-level register access to take UART base address as a parameter. This is done to support a list of base addresses defined in the platform. Change-Id: Ie630e55f2562f099b0ba9eb94b08c92d26dfdf2e Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5309 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
2014-03-04console: Use single driver entry for UARTsKyösti Mälkki
UARTs now have unified prototypes and can use a single entry in the list of drivers for ramstage. Change-Id: I315daaf9a83cfa60f1a270146c729907a1d6d45b Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5308 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-03-04SMM: Only have console with DEBUG_SMIKyösti Mälkki
Existing code compiled serial communication and printk() for SMM even when DEBUG_SMI was not selected. Change-Id: Ic5e25cd7453cb2243f7ac592b093fba752a299f7 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5142 Tested-by: build bot (Jenkins) Reviewed-by: Vladimir Serbinenko <phcoder@gmail.com>
2014-03-04uart8250: Move under drivers/uartKyösti Mälkki
Change-Id: Ic65ffaaa092330ed68d891e4a09a8b86cdc04a3a Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5236 Tested-by: build bot (Jenkins)
2014-03-04console: Fix includesKyösti Mälkki
Do not pull in console hw-specific prototypes everywhere with console.h as those are not needed for higher levels. Move prototypes for UARTs next to other consoles. Change-Id: Icbc9cd3e5bdfdab85d7dccd7c3827bba35248fb8 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5232 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net> Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-03-04pl011 UART: Move under drivers/uartKyösti Mälkki
Currently this is only a minimal stub to get console on qemu-armv7. Change-Id: I3f20b7f944bc7d0e5ace9d22198d4c16a3839d2c Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5162 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-03-04option: Add arch-agnostic get_option()Kyösti Mälkki
We should not have pc80/ includes in console/. Change-Id: Id7da732b1ea094be01f45f9dbb49142f4e78f095 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5157 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-03-04uart8250: Fix and unify baudrate divisor calculationKyösti Mälkki
Divisor is a function of requested baudrate, platform-specific reference clock and amount of oversampling done on the UART reference. Calculate this parameter with divisor rounded to nearest integer. When building without option_table or when there is no entry for baud_rate, CONFIG_TTYS0_BAUD is used for default baudrate. For OxPCIe use of 4 MHz for reference was arbitrary giving correct divisor for 115200 but somewhat inaccurate for lower baudrates. Actual hardware is 62500000 with 16 times oversampling. FIXME: Field for baudrate in lb_tables is still incorrect. Change-Id: I68539738469af780fadd3392263dd9b3d5964d2d Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5229 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-02-17console: Add drivers/uartKyösti Mälkki
Also move UART related Kconfig options from top-level file. Change-Id: I4e407977cff6f6506f991600c98d6d264676d3f8 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5230 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>