mirror of
https://github.com/Telecominfraproject/OpenCellular.git
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f93f1cfe77
Board bring up. GPIO / UART / timer / console / task / hook are working now. BRANCH=tot BUG=none TEST=run on evaluation board and see LED 0/1 are blinking. Console commands are available to use. Change-Id: If93a2c94b8abe1c2c931c03a7a12ddd2bed9d9f6 Signed-off-by: Louis Yung-Chieh Lo <yjlou@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/209403 Reviewed-by: Vic Yang <victoryang@chromium.org>
94 lines
1.8 KiB
C
94 lines
1.8 KiB
C
/* Copyright (c) 2014 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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/* System module for Chrome EC : hardware specific implementation */
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#include "common.h"
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#include "console.h"
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#include "registers.h"
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#include "system.h"
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/* Console output macros */
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#define CPUTS(outstr) cputs(CC_SYSTEM, outstr)
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#define CPRINTS(format, args...) cprints(CC_SYSTEM, format, ## args)
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const char *system_get_chip_vendor(void)
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{
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return "nrf";
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}
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const char *system_get_chip_name(void)
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{
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return "nrf51822";
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}
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const char *system_get_chip_revision(void)
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{
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return "";
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}
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void system_hibernate(uint32_t seconds, uint32_t microseconds)
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{
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/* Flush console before hibernating */
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cflush();
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/* chip specific standby mode */
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CPRINTS("TODO: implement %s()", __func__);
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}
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static void check_reset_cause(void)
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{
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uint32_t flags = 0;
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uint32_t raw_cause = NRF51_POWER_RESETREAS;
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if (raw_cause & 0x00000001)
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flags |= RESET_FLAG_RESET_PIN;
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if (raw_cause & 0x00000002)
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flags |= RESET_FLAG_WATCHDOG;
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/*
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* According to the data sheet, this bit is set by AIRCR.SYSRESETREQ.
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* However, th reset from J-Link also sets this bit. This could mislead
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* us.
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*/
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if (raw_cause & 0x00000004)
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flags |= RESET_FLAG_SOFT;
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if (raw_cause & 0x00070008)
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flags |= RESET_FLAG_OTHER;
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system_set_reset_flags(flags);
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/* clear it by writing 1's */
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NRF51_POWER_RESETREAS = raw_cause;
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}
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void system_reset(int flags)
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{
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CPRINTS("TODO: implement %s(). Infinite loop.", __func__);
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while (1)
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;
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}
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int system_get_vbnvcontext(uint8_t *block)
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{
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CPRINTS("TODO: implement %s()", __func__);
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return EC_ERROR_UNIMPLEMENTED;
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}
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int system_set_vbnvcontext(const uint8_t *block)
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{
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CPRINTS("TODO: implement %s()", __func__);
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return EC_ERROR_UNIMPLEMENTED;
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}
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void system_pre_init(void)
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{
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check_reset_cause();
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}
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