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coreboot-kgpe-d16/src/soc/intel/skylake/uart.c

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soc/intel: Add Skylake SOC support Add the files to support the Skylake SOC. Matches chromium tree at 927026db BRANCH=none BUG=None TEST=Build and run on a Skylake platform Change-Id: I80248f7e47eaf13b52e3c7ff951eb1976edbaa15 Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com> Reviewed-on: http://review.coreboot.org/10341 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2015-05-13 03:23:27 +02:00
/*
* This file is part of the coreboot project.
*
* Copyright (C) 2015 Google Inc.
* Copyright (C) 2015 Intel Corporation
*
* 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.
*/
soc/intel/skylake: Enable UART debug controller on S3 resume 1. Add a new variable to GNVS to store information during S3 suspend whether UART debug port controller is enabled. 2. On resume, read stored GNVS variable to decide if UART debug port controller needs to be initialized. 3. Provide helpers functions required by intel/common UART driver for enabling controller on S3 resume. BUG=b:64030366 TEST=Verified behavior with different combinations: 1. Serial console enabled in coreboot: No change in behavior. 2. Serial console enabled only in kernel: coreboot initializes debug controller on S3 resume. 3. Serial console not enabled in coreboot and kernel: coreboot skips initialization of debug controller on S3 resume. Change-Id: Iad1cc974bc396ecd55b05ebb6591eec6cedfa16c Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/20886 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2017-08-05 01:24:12 +02:00
#include <cbmem.h>
soc/intel: Add Skylake SOC support Add the files to support the Skylake SOC. Matches chromium tree at 927026db BRANCH=none BUG=None TEST=Build and run on a Skylake platform Change-Id: I80248f7e47eaf13b52e3c7ff951eb1976edbaa15 Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com> Reviewed-on: http://review.coreboot.org/10341 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2015-05-13 03:23:27 +02:00
#include <device/pci.h>
soc/intel/skylake: Use common/blocks/uart code Change-Id: I53ed687dc49524e001889f091825b2cc530546a3 Signed-off-by: Aamir Bohra <aamir.bohra@intel.com> Reviewed-on: https://review.coreboot.org/19492 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2017-04-27 07:19:04 +02:00
#include <intelblocks/uart.h>
skylake: fix serial port with new code base Many Kconfig options changed in coreboot.org since skylake was first started. Fix Kconfig option name changes, and also provide a common option, UART_DEBUG that can be selected to select all the necessary options. Note: It's still a requirement to manually unset the 8250IO option because that's unconditionally set. BUG=chrome-os-partner:43419 BUG=chrome-os-partner:43463 BRANCH=None TEST=Built glados. Booted into kernel. Kernel reboots somewhere. Original-Change-Id: I9e6549ea0f1d6b9ffe64a73856ec87b5bc7b7091 Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/289951 Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Change-Id: I0e6b492d7279cc35d4fb3ac17fd727177adce39d Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/11172 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-07-30 23:52:56 +02:00
#include <soc/iomap.h>
soc/intel/skylake: Enable UART debug controller on S3 resume 1. Add a new variable to GNVS to store information during S3 suspend whether UART debug port controller is enabled. 2. On resume, read stored GNVS variable to decide if UART debug port controller needs to be initialized. 3. Provide helpers functions required by intel/common UART driver for enabling controller on S3 resume. BUG=b:64030366 TEST=Verified behavior with different combinations: 1. Serial console enabled in coreboot: No change in behavior. 2. Serial console enabled only in kernel: coreboot initializes debug controller on S3 resume. 3. Serial console not enabled in coreboot and kernel: coreboot skips initialization of debug controller on S3 resume. Change-Id: Iad1cc974bc396ecd55b05ebb6591eec6cedfa16c Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/20886 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2017-08-05 01:24:12 +02:00
#include <soc/nvs.h>
soc/intel: Add Skylake SOC support Add the files to support the Skylake SOC. Matches chromium tree at 927026db BRANCH=none BUG=None TEST=Build and run on a Skylake platform Change-Id: I80248f7e47eaf13b52e3c7ff951eb1976edbaa15 Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com> Reviewed-on: http://review.coreboot.org/10341 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2015-05-13 03:23:27 +02:00
#include <soc/pci_devs.h>
soc/intel/skylake: Enable UART debug controller on S3 resume 1. Add a new variable to GNVS to store information during S3 suspend whether UART debug port controller is enabled. 2. On resume, read stored GNVS variable to decide if UART debug port controller needs to be initialized. 3. Provide helpers functions required by intel/common UART driver for enabling controller on S3 resume. BUG=b:64030366 TEST=Verified behavior with different combinations: 1. Serial console enabled in coreboot: No change in behavior. 2. Serial console enabled only in kernel: coreboot initializes debug controller on S3 resume. 3. Serial console not enabled in coreboot and kernel: coreboot skips initialization of debug controller on S3 resume. Change-Id: Iad1cc974bc396ecd55b05ebb6591eec6cedfa16c Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/20886 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2017-08-05 01:24:12 +02:00
#if !ENV_SMM
soc/intel/skylake: Use common/blocks/uart code Change-Id: I53ed687dc49524e001889f091825b2cc530546a3 Signed-off-by: Aamir Bohra <aamir.bohra@intel.com> Reviewed-on: https://review.coreboot.org/19492 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2017-04-27 07:19:04 +02:00
void pch_uart_read_resources(struct device *dev)
soc/intel: Add Skylake SOC support Add the files to support the Skylake SOC. Matches chromium tree at 927026db BRANCH=none BUG=None TEST=Build and run on a Skylake platform Change-Id: I80248f7e47eaf13b52e3c7ff951eb1976edbaa15 Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com> Reviewed-on: http://review.coreboot.org/10341 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2015-05-13 03:23:27 +02:00
{
pci_dev_read_resources(dev);
/* Set the configured UART base address for the debug port */
soc/intel/skylake: Enable UART debug controller on S3 resume 1. Add a new variable to GNVS to store information during S3 suspend whether UART debug port controller is enabled. 2. On resume, read stored GNVS variable to decide if UART debug port controller needs to be initialized. 3. Provide helpers functions required by intel/common UART driver for enabling controller on S3 resume. BUG=b:64030366 TEST=Verified behavior with different combinations: 1. Serial console enabled in coreboot: No change in behavior. 2. Serial console enabled only in kernel: coreboot initializes debug controller on S3 resume. 3. Serial console not enabled in coreboot and kernel: coreboot skips initialization of debug controller on S3 resume. Change-Id: Iad1cc974bc396ecd55b05ebb6591eec6cedfa16c Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/20886 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2017-08-05 01:24:12 +02:00
if (IS_ENABLED(CONFIG_UART_DEBUG) && uart_is_debug_controller(dev)) {
soc/intel: Add Skylake SOC support Add the files to support the Skylake SOC. Matches chromium tree at 927026db BRANCH=none BUG=None TEST=Build and run on a Skylake platform Change-Id: I80248f7e47eaf13b52e3c7ff951eb1976edbaa15 Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com> Reviewed-on: http://review.coreboot.org/10341 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2015-05-13 03:23:27 +02:00
struct resource *res = find_resource(dev, PCI_BASE_ADDRESS_0);
skylake: fix serial port with new code base Many Kconfig options changed in coreboot.org since skylake was first started. Fix Kconfig option name changes, and also provide a common option, UART_DEBUG that can be selected to select all the necessary options. Note: It's still a requirement to manually unset the 8250IO option because that's unconditionally set. BUG=chrome-os-partner:43419 BUG=chrome-os-partner:43463 BRANCH=None TEST=Built glados. Booted into kernel. Kernel reboots somewhere. Original-Change-Id: I9e6549ea0f1d6b9ffe64a73856ec87b5bc7b7091 Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org> Original-Reviewed-on: https://chromium-review.googlesource.com/289951 Original-Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Change-Id: I0e6b492d7279cc35d4fb3ac17fd727177adce39d Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: http://review.coreboot.org/11172 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2015-07-30 23:52:56 +02:00
/* Need to set the base and size for the resource allocator. */
res->base = UART_DEBUG_BASE_ADDRESS;
res->size = UART_DEBUG_BASE_SIZE;
soc/intel: Add Skylake SOC support Add the files to support the Skylake SOC. Matches chromium tree at 927026db BRANCH=none BUG=None TEST=Build and run on a Skylake platform Change-Id: I80248f7e47eaf13b52e3c7ff951eb1976edbaa15 Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com> Reviewed-on: http://review.coreboot.org/10341 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2015-05-13 03:23:27 +02:00
res->flags = IORESOURCE_MEM | IORESOURCE_ASSIGNED |
IORESOURCE_FIXED;
}
}
soc/intel/skylake: Enable UART debug controller on S3 resume 1. Add a new variable to GNVS to store information during S3 suspend whether UART debug port controller is enabled. 2. On resume, read stored GNVS variable to decide if UART debug port controller needs to be initialized. 3. Provide helpers functions required by intel/common UART driver for enabling controller on S3 resume. BUG=b:64030366 TEST=Verified behavior with different combinations: 1. Serial console enabled in coreboot: No change in behavior. 2. Serial console enabled only in kernel: coreboot initializes debug controller on S3 resume. 3. Serial console not enabled in coreboot and kernel: coreboot skips initialization of debug controller on S3 resume. Change-Id: Iad1cc974bc396ecd55b05ebb6591eec6cedfa16c Signed-off-by: Furquan Shaikh <furquan@chromium.org> Reviewed-on: https://review.coreboot.org/20886 Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2017-08-05 01:24:12 +02:00
#endif
bool pch_uart_init_debug_controller_on_resume(void)
{
global_nvs_t *gnvs = cbmem_find(CBMEM_ID_ACPI_GNVS);
if (gnvs)
return !!gnvs->uior;
return false;
}
device_t pch_uart_get_debug_controller(void)
{
return PCH_DEV_UART2;
}
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