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coreboot-kgpe-d16/src/include/console/uart.h

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WIP: Add support for non-8250 built-in UARTs Change-Id: I5b412678bb8993633b3a610315d298cb20c705f3 Signed-off-by: David Hendricks <dhendrix@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2011 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-08 02:31:37 +01:00
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2012 The ChromiumOS Authors. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
console: Fix includes 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>
2014-02-17 20:34:42 +01:00
#ifndef CONSOLE_UART_H
#define CONSOLE_UART_H
WIP: Add support for non-8250 built-in UARTs Change-Id: I5b412678bb8993633b3a610315d298cb20c705f3 Signed-off-by: David Hendricks <dhendrix@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2011 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-08 02:31:37 +01:00
console: Simplify the enable rules Consoles on CBMEM and USB have somewhat complex rules and dependencies when they can be active. Use simple variables to test which stage of boot is being built for each console. Change-Id: I2489e7731d07ca7d5dd2ea8b6501c73f05d6edd8 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5341 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-02-26 14:19:04 +01:00
#include <rules.h>
console: Use single driver entry for UARTs 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>
2014-02-14 09:31:38 +01:00
#include <stdint.h>
uart8250: Fix and unify baudrate divisor calculation 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>
2014-02-17 18:37:52 +01:00
/* Return the clock frequency UART uses as reference clock for
* baudrate generator. */
unsigned int uart_platform_refclk(void);
/* Return the baudrate determined from option_table, or when that is
* not used, CONFIG_TTYS0_BAUD.
*/
unsigned int default_baudrate(void);
/* Returns the divisor value for a given baudrate.
* The formula to satisfy is:
* refclk / divisor = baudrate * oversample
*/
unsigned int uart_baudrate_divisor(unsigned int baudrate,
unsigned int refclk, unsigned int oversample);
drivers/uart: Enable override for input clock divider Allow the platform to override the input clock divider by adding the uart_input_clock_divider routine. This routine combines the baud-rate oversample divider with any other input clock divider. The default routine returns 16 which is the standard baud-rate oversampling value. A platform may override this default "weak" routine by providing a new routine and selecting UART_OVERRIDE_INPUT_CLOCK_DIVIDER. This works around ROMCC not supporting weak routines. Testing on Galileo: * Edit the src/mainboard/intel/galileo/Makefile.inc file: * Add "select ADD_FSP_PDAT_FILE" * Add "select ADD_FSP_RAW_BIN" * Add "select ADD_RMU_FILE" * Place the FSP.bin file in the location specified by CONFIG_FSP_FILE * Place the pdat.bin files in the location specified by CONFIG_FSP_PDAT_FILE * Place the rmu.bin file in the location specified by CONFIG_RMU_FILE * Build EDK2 CorebootPayloadPkg/CorebootPayloadPkgIa32.dsc to generate UEFIPAYLOAD.fd * Testing is successful when CorebootPayloadPkg is able to properly initialize the serial port without using built-in values. Change-Id: Ieb6453b045d84702b8f730988d0fed9f253f63e2 Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com> Reviewed-on: https://review.coreboot.org/14611 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>
2016-05-04 22:13:20 +02:00
/* Returns the oversample divisor multiplied by any other divisors that act
* on the input clock
*/
unsigned int uart_input_clock_divider(void);
uart8250: Fix and unify baudrate divisor calculation 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>
2014-02-17 18:37:52 +01:00
uart: Support multiple ports 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>
2014-03-14 21:28:29 +01:00
void uart_init(int idx);
void uart_tx_byte(int idx, unsigned char data);
void uart_tx_flush(int idx);
unsigned char uart_rx_byte(int idx);
WIP: Add support for non-8250 built-in UARTs Change-Id: I5b412678bb8993633b3a610315d298cb20c705f3 Signed-off-by: David Hendricks <dhendrix@chromium.org> Signed-off-by: Stefan Reinauer <reinauer@google.com> Reviewed-on: http://review.coreboot.org/2011 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2012-12-08 02:31:37 +01:00
uarts: 32/64 cleanup We had lots of casts that caused warnings when compiling on RISCV. Clean them up. Change-Id: I46fcb33147ad6bf75e49ebfdfa05990e8c7ae4eb Signed-off-by: Ronald G. Minnich <rminnich@gmail.com> Reviewed-on: http://review.coreboot.org/7066 Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-10-16 12:53:48 +02:00
uintptr_t uart_platform_base(int idx);
move uartmem_getbaseaddr() to generic uart header This moves uartmem_getbaseaddr() from an 8250-specific header to the generic uart header. This is to accomodate non-8250 memory-mapped UARTs. Change-Id: Id25e7dab12b33bdd928f2aa4611d720aa79f3dee Signed-off-by: David Hendricks <dhendrix@chromium.org> Reviewed-on: http://review.coreboot.org/2422 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2013-02-16 04:29:12 +01:00
uart: Prepare to support multiple base addresses 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>
2014-02-24 19:51:30 +01:00
#if !defined(__ROMCC__)
static inline void *uart_platform_baseptr(int idx)
{
return (void *)uart_platform_base(idx);
}
uart8250mem: Unify calls with generic UART NOTE: UART base for SMM continues to be broken, as it does not use the address resource allocator has assigned. Change-Id: I79f2ca8427a33a3c719adfe277c24dab79a33ef3 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5235 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2014-02-15 09:19:23 +01:00
void oxford_remap(unsigned int new_base);
console: Fix includes 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>
2014-02-17 20:34:42 +01:00
src/include: Add parenthesis around macros Fix the following error found by checkpatch.pl: ERROR: Macros with complex values should be enclosed in parentheses False positives are detected for attribute macros. An example is: ERROR: Macros with complex values should be enclosed in parentheses +#define BOOT_STATE_INIT_ATTR __attribute__ ((used, section (".bs_init"))) False positive also generated for macros for linker script files. An example is: ERROR: Macros with complex values should be enclosed in parentheses +#define CBFS_CACHE(addr, size) \ + REGION(cbfs_cache, addr, size, 4) \ + ALIAS_REGION(cbfs_cache, preram_cbfs_cache) \ + ALIAS_REGION(cbfs_cache, postram_cbfs_cache) False positives generated for assembly code macros. An example is: ERROR: Macros with complex values should be enclosed in parentheses +#define DECLARE_OPTIONAL_REGION(name) asm (".weak _" #name ", _e" #name ) False positive detected when macro includes multiple comma separated values. The following code is from src/include/device/azalia_device.h: #define AZALIA_SUBVENDOR(codec, val) \ (((codec) << 28) | (0x01720 << 8) | ((val) & 0xff)), \ (((codec) << 28) | (0x01721 << 8) | (((val) >> 8) & 0xff)), \ (((codec) << 28) | (0x01722 << 8) | (((val) >> 16) & 0xff)), \ (((codec) << 28) | (0x01723 << 8) | (((val) >> 24) & 0xff)) TEST=Build and run on Galileo Gen2 Change-Id: I6e3b6950738e6906851a172ba3a22e3d5af1e35d Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com> Reviewed-on: https://review.coreboot.org/18649 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2017-03-07 22:17:49 +01:00
#define __CONSOLE_SERIAL_ENABLE__ (CONFIG_CONSOLE_SERIAL && \
verstage: provide support for serial console verstage previously lacked serial console support. Add the necessary objects and macro checks to allow verstage to include the serial console. Change-Id: Ibe911ad347cac0b089f5bc0d4263956f44f3d116 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/10196 Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org> Tested-by: build bot (Jenkins)
2015-05-13 20:37:43 +02:00
(ENV_BOOTBLOCK || ENV_ROMSTAGE || ENV_RAMSTAGE || ENV_VERSTAGE || \
src/include: Add parenthesis around macros Fix the following error found by checkpatch.pl: ERROR: Macros with complex values should be enclosed in parentheses False positives are detected for attribute macros. An example is: ERROR: Macros with complex values should be enclosed in parentheses +#define BOOT_STATE_INIT_ATTR __attribute__ ((used, section (".bs_init"))) False positive also generated for macros for linker script files. An example is: ERROR: Macros with complex values should be enclosed in parentheses +#define CBFS_CACHE(addr, size) \ + REGION(cbfs_cache, addr, size, 4) \ + ALIAS_REGION(cbfs_cache, preram_cbfs_cache) \ + ALIAS_REGION(cbfs_cache, postram_cbfs_cache) False positives generated for assembly code macros. An example is: ERROR: Macros with complex values should be enclosed in parentheses +#define DECLARE_OPTIONAL_REGION(name) asm (".weak _" #name ", _e" #name ) False positive detected when macro includes multiple comma separated values. The following code is from src/include/device/azalia_device.h: #define AZALIA_SUBVENDOR(codec, val) \ (((codec) << 28) | (0x01720 << 8) | ((val) & 0xff)), \ (((codec) << 28) | (0x01721 << 8) | (((val) >> 8) & 0xff)), \ (((codec) << 28) | (0x01722 << 8) | (((val) >> 16) & 0xff)), \ (((codec) << 28) | (0x01723 << 8) | (((val) >> 24) & 0xff)) TEST=Build and run on Galileo Gen2 Change-Id: I6e3b6950738e6906851a172ba3a22e3d5af1e35d Signed-off-by: Lee Leahy <Leroy.P.Leahy@intel.com> Reviewed-on: https://review.coreboot.org/18649 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2017-03-07 22:17:49 +01:00
ENV_POSTCAR || (ENV_SMM && CONFIG_DEBUG_SMI)))
console: Simplify the enable rules Consoles on CBMEM and USB have somewhat complex rules and dependencies when they can be active. Use simple variables to test which stage of boot is being built for each console. Change-Id: I2489e7731d07ca7d5dd2ea8b6501c73f05d6edd8 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5341 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-02-26 14:19:04 +01:00
#if __CONSOLE_SERIAL_ENABLE__
uart: Support multiple ports 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>
2014-03-14 21:28:29 +01:00
static inline void __uart_init(void) { uart_init(CONFIG_UART_FOR_CONSOLE); }
static inline void __uart_tx_byte(u8 data) { uart_tx_byte(CONFIG_UART_FOR_CONSOLE, data); }
static inline void __uart_tx_flush(void) { uart_tx_flush(CONFIG_UART_FOR_CONSOLE); }
console: Simplify the enable rules Consoles on CBMEM and USB have somewhat complex rules and dependencies when they can be active. Use simple variables to test which stage of boot is being built for each console. Change-Id: I2489e7731d07ca7d5dd2ea8b6501c73f05d6edd8 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5341 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-02-26 14:19:04 +01:00
#else
static inline void __uart_init(void) {}
static inline void __uart_tx_byte(u8 data) {}
static inline void __uart_tx_flush(void) {}
#endif
console: Add console for GDB Connection of UARTs to GDB stub got lost in the console transition process, bring it back. In theory, GDB stub should work also over usbdebug, but that solution is not really tested at all yet. Change-Id: I90e05e8132889e788b92e055ee191f35add43bbc Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5343 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2014-04-04 14:05:28 +02:00
#if CONFIG_GDB_STUB && (ENV_ROMSTAGE || ENV_RAMSTAGE)
#define CONFIG_UART_FOR_GDB CONFIG_UART_FOR_CONSOLE
static inline void __gdb_hw_init(void) { uart_init(CONFIG_UART_FOR_GDB); }
static inline void __gdb_tx_byte(u8 data) { uart_tx_byte(CONFIG_UART_FOR_GDB, data); }
static inline void __gdb_tx_flush(void) { uart_tx_flush(CONFIG_UART_FOR_GDB); }
static inline u8 __gdb_rx_byte(void) { return uart_rx_byte(CONFIG_UART_FOR_GDB); }
#endif
console: Simplify the enable rules Consoles on CBMEM and USB have somewhat complex rules and dependencies when they can be active. Use simple variables to test which stage of boot is being built for each console. Change-Id: I2489e7731d07ca7d5dd2ea8b6501c73f05d6edd8 Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: http://review.coreboot.org/5341 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@gmail.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-02-26 14:19:04 +01:00
#endif /* __ROMCC__ */
console: Fix includes 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>
2014-02-17 20:34:42 +01:00
#endif /* CONSOLE_UART_H */
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