From 0eb4db185cfef44ddfdbd91d4fe69a48c127fa84 Mon Sep 17 00:00:00 2001 From: santhosh hassan Date: Sat, 9 Mar 2019 02:28:43 -0800 Subject: google/mistral: Implement board reset MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Implement reset using PSHOLD. Change-Id: I472bf73cc7b227187b284a3730ec5dea5373695c Signed-off-by: Santhosh Hassan  Signed-off-by: Nitheesh Sekar Reviewed-on: https://review.coreboot.org/c/coreboot/+/31827 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi --- src/mainboard/google/mistral/reset.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 src/mainboard/google/mistral/reset.c (limited to 'src/mainboard/google/mistral/reset.c') diff --git a/src/mainboard/google/mistral/reset.c b/src/mainboard/google/mistral/reset.c new file mode 100644 index 0000000000..107e79c888 --- /dev/null +++ b/src/mainboard/google/mistral/reset.c @@ -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 +#include + +#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); +} -- cgit v1.2.3