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libpayload: ipq40xx: Introduce timer and uart driver

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BUG=chrome-os-partner:49249
TEST=None. Initial code not sure if it will even compile
BRANCH=none

Change-Id: Ibf2c91be93e2567cc1262b6fb84461eef51ab3e0
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: b87157138302b017e64a28417a22421c880c1bcb
Original-Change-Id: I16a8324d3c8ef4ee729f4509fda5bfe703b24ce4
Original-Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/333304
Original-Reviewed-by: David Hendricks <dhendrix@chromium.org>
Reviewed-on: https://review.coreboot.org/14656
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Varadarajan Narayanan
2016-02-01 11:32:12 +05:30
committed by Patrick Georgi
parent 905a933f46
commit c1ae7e9183
4 changed files with 633 additions and 0 deletions
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52
payloads/libpayload/drivers/timer/ipq40xx.c Normal file
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/*
* Copyright (c) 2015, 2016, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <libpayload.h>
#define GCNT_FREQ_MHZ 48
#define MSM_TMR_BASE ((void *)0x004a1000u)
#define GCNT_CNTCV_LO (MSM_TMR_BASE + 0x1000)
#define GCNT_CNTCV_HI (MSM_TMR_BASE + 0x1004)
uint64_t timer_hz(void)
{
return GCNT_FREQ_MHZ * 1000 * 1000;
}
uint64_t timer_raw_value(void)
{
uint32_t hi, lo;
do {
hi = read32(GCNT_CNTCV_HI);
lo = read32(GCNT_CNTCV_LO);
} while (hi != read32(GCNT_CNTCV_HI));
return ((((uint64_t)hi) << 32) | lo);
}