diff options
| author | Deepa Dinamani <deepad@codeaurora.org> | 2014-12-10 15:23:47 -0800 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-04-15 21:57:04 +0200 |
| commit | 18e434d1d35f96d5cf6a4b6c14f5528019c4f2f4 (patch) | |
| tree | 2b5a9218e7921ee51500545db429dfd7800ce33c /src/mainboard/google/storm | |
| parent | 08f249e7d07e7742e202d08305822af2b3ddec78 (diff) | |
storm: Add watchdog reset api.
Use the apps processor watchdog reset to do a hard reset.
The watchdog reset drives the RESETOUT on the chip.
Modify register address definitions to be able to use pointers and
pointer arithmetics.
BRANCH=storm
BUG=chrome-os-partner:34334
TEST=the chip resets and the control returns to start of SBL.
Change-Id: Ib5772ab152b27058fde1be9de2d2ac26bfe00ca4
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: d50413cb614ef05ada93be1252fe5ef617a94d91
Original-Change-Id: I9b249d057b473429335587f7241ca462b4a6a8b7
Original-Signed-off-by: Deepa Dinamani <deepad@codeaurora.org>
Original-Signed-off-by: Vadim Bendebury <vbendeb@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/236141
Original-Reviewed-by: Trevor Bourget <tbourget@codeaurora.org>
Reviewed-on: http://review.coreboot.org/9691
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/mainboard/google/storm')
| -rw-r--r-- | src/mainboard/google/storm/reset.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/src/mainboard/google/storm/reset.c b/src/mainboard/google/storm/reset.c index 8020fbfbed..58c52f91d9 100644 --- a/src/mainboard/google/storm/reset.c +++ b/src/mainboard/google/storm/reset.c @@ -1,6 +1,8 @@ /* + * * 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 @@ -17,10 +19,34 @@ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ +#include <console/console.h> +#include <soc/iomap.h> #include <reset.h> -void hard_reset(void) +/* Watchdog bite time set to default reset value */ +#define RESET_WDT_BITE_TIME 0x31F3 + +/* Watchdog bark time value is kept larger than the watchdog timeout + * of 0x31F3, effectively disabling the watchdog bark interrupt + */ +#define RESET_WDT_BARK_TIME (5 * RESET_WDT_BITE_TIME) + +static void wdog_reset(void) { - while (1) + printk(BIOS_DEBUG, "\nResetting with watchdog!\n"); + + writel(0, APCS_WDT0_EN); + writel(1, APCS_WDT0_RST); + writel(RESET_WDT_BARK_TIME, APCS_WDT0_BARK_TIME); + writel(RESET_WDT_BITE_TIME, APCS_WDT0_BITE_TIME); + writel(1, APCS_WDT0_EN); + writel(1, APCS_WDT0_CPU0_WDOG_EXPIRED_ENABLE); + + for (;;) ; } + +void hard_reset(void) +{ + wdog_reset(); +} |