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1029239bc1
Currently, chip/g uses jtag_pre_init() to do some chip
pre-initialization that isn't actually related to JTAG. This has been
harmless, but it's currently the only chip which actually does "JTAG"
pre-init, and we'd like to get rid of that. So, move that
functionality to a new optional chip_pre_init() function.
BUG=chromium:747629
BRANCH=cr50
TEST=make buildall
boot cr50
make all dis; confirm chip_pre_init() is called early in <main>
Change-Id: I3cae0747ab0c3cc974fce9f108947207b38e035f
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/629876
Reviewed-by: Mary Ruthven <mruthven@chromium.org>
Reviewed-by: Shawn N <shawnn@chromium.org>
29 lines
869 B
C
29 lines
869 B
C
/* Copyright 2017 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "board_config.h"
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#include "registers.h"
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void chip_pre_init(void)
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{
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/*
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* If we're resuming from deep sleep we need to undo some stuff as soon
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* as possible and this is the first init function that's called.
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*
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* It doesn't hurt anything if this setup is not needed, but we don't
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* investigate the reset cause until much later (and doing so is
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* destructive), so we'll just do the post-deep-sleep setup every time.
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*/
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/* Disable the deep sleep triggers */
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GR_PMU_LOW_POWER_DIS = 0;
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GR_PMU_EXITPD_MASK = 0;
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/* Unfreeze the USB module */
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GWRITE_FIELD(USB, PCGCCTL, STOPPCLK, 0);
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GWRITE_FIELD(USB, PCGCCTL, RSTPDWNMODULE, 0);
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GWRITE_FIELD(USB, PCGCCTL, PWRCLMP, 0);
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}
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