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google/mistral: Implement board reset

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Implement reset using PSHOLD.

Change-Id: I472bf73cc7b227187b284a3730ec5dea5373695c
Signed-off-by: Santhosh Hassan <sahassan@google.com>
Signed-off-by: Nitheesh Sekar <nsekar@codeaurora.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31827
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
This commit is contained in:
santhosh hassan 2019-03-09 02:28:43 -08:00 committed by Patrick Georgi
parent 0dd80aab25
commit 0eb4db185c
3 changed files with 39 additions and 1 deletions
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1
src/mainboard/google/mistral/Kconfig
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@ -11,7 +11,6 @@ config BOARD_SPECIFIC_OPTIONS
select SOC_QUALCOMM_QCS405
select SPI_FLASH
select MAINBOARD_HAS_CHROMEOS
select MISSING_BOARD_RESET
config VBOOT
select VBOOT_VBNV_FLASH

4
src/mainboard/google/mistral/Makefile.inc
View file

@ -1,14 +1,18 @@
bootblock-y += memlayout.ld
bootblock-y += chromeos.c
bootblock-y += reset.c
bootblock-y += bootblock.c
verstage-y += memlayout.ld
verstage-y += chromeos.c
verstage-y += reset.c
romstage-y += memlayout.ld
romstage-y += chromeos.c
romstage-y += reset.c
ramstage-y += memlayout.ld
ramstage-y += chromeos.c
ramstage-y += reset.c
ramstage-y += mainboard.c

35
src/mainboard/google/mistral/reset.c Normal file
View file

@ -0,0 +1,35 @@
/*
*
* This file is part of the coreboot project.
*
* Copyright (c) 2014, The Linux Foundation. All rights reserved.
* Copyright 2014 Google Inc.
*
* 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.
*/
#include <device/mmio.h>
#include <reset.h>
#define GCNT_PSHOLD ((void *)0x004AB000u)
#define TCSR_BOOT_MISC_DETECT ((void *)0x0193D100)
#define TCSR_RESET_DEBUG_SW_ENTRY ((void *)0x01940000)
void do_board_reset(void)
{
/*
* At boot time the boot loaders would have set a magic cookie
* here to detect watchdog reset. However, since this is a
* normal reset clear the magic numbers.
*/
write32(TCSR_BOOT_MISC_DETECT, 0);
write32(TCSR_RESET_DEBUG_SW_ENTRY, 0);
write32(GCNT_PSHOLD, 0);
}