diff options
Diffstat (limited to 'chip/nrf51/system.c')
-rw-r--r-- | chip/nrf51/system.c | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/chip/nrf51/system.c b/chip/nrf51/system.c deleted file mode 100644 index dc7bff2059..0000000000 --- a/chip/nrf51/system.c +++ /dev/null @@ -1,126 +0,0 @@ -/* Copyright 2014 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* System module for Chrome EC : hardware specific implementation */ - -#include "common.h" -#include "console.h" -#include "ec_commands.h" -#include "registers.h" -#include "system.h" -#include "task.h" -#include "cpu.h" - -/* Console output macros */ -#define CPUTS(outstr) cputs(CC_SYSTEM, outstr) -#define CPRINTS(format, args...) cprints(CC_SYSTEM, format, ## args) - -const char *system_get_chip_vendor(void) -{ - return "nrf"; -} - -const char *system_get_chip_name(void) -{ - return "nrf51822"; -} - -const char *system_get_chip_revision(void) -{ - return ""; -} - -void system_hibernate(uint32_t seconds, uint32_t microseconds) -{ - /* Flush console before hibernating */ - cflush(); - - if (board_hibernate) - board_hibernate(); - - /* chip specific standby mode */ - CPRINTS("TODO: implement %s()", __func__); -} - - -static void check_reset_cause(void) -{ - uint32_t flags = 0; - uint32_t raw_cause = NRF51_POWER_RESETREAS; - - if (raw_cause & NRF51_POWER_RESETREAS_RESETPIN) - flags |= EC_RESET_FLAG_RESET_PIN; - - if (raw_cause & NRF51_POWER_RESETREAS_DOG) - flags |= EC_RESET_FLAG_WATCHDOG; - - /* Note that the programmer uses a soft reset in debug mode. */ - if (raw_cause & NRF51_POWER_RESETREAS_SREQ) - flags |= EC_RESET_FLAG_SOFT; - - if (raw_cause & (NRF51_POWER_RESETREAS_OFF | - NRF51_POWER_RESETREAS_LPCOMP)) - flags |= EC_RESET_FLAG_WAKE_PIN; - - if (raw_cause & (NRF51_POWER_RESETREAS_LOCKUP | - NRF51_POWER_RESETREAS_DIF)) - flags |= EC_RESET_FLAG_OTHER; - - system_set_reset_flags(flags); - - /* clear it by writing 1's */ - NRF51_POWER_RESETREAS = raw_cause; -} - -static void system_watchdog_reset(void) -{ - if (NRF51_WDT_TIMEOUT != 0) { - /* Hard reset the WDT */ - NRF51_WDT_POWER = 0; - NRF51_WDT_POWER = 1; - } - - /* NRF51_WDT_CONFIG_HALT_RUN breaks this */ - NRF51_WDT_CONFIG = NRF51_WDT_CONFIG_SLEEP_RUN; - - NRF51_WDT_RREN = NRF51_WDT_RREN_BIT(0); - NRF51_WDT_CRV = 3; /* @32KHz */ - NRF51_WDT_START = 1; -} - -void system_reset(int flags) -{ - /* Disable interrupts to avoid task swaps during reboot */ - interrupt_disable(); - - if (flags & SYSTEM_RESET_HARD) - /* Ask the watchdog to trigger a hard reboot */ - system_watchdog_reset(); - else { - /* Use SYSRESETREQ to trigger a soft reboot */ - CPU_NVIC_APINT = 0x05fa0004; - } - - /* Spin and wait for reboot; should never return */ - while (1) - ; -} - -int system_get_bbram(enum system_bbram_idx idx, uint8_t *value) -{ - CPRINTS("TODO: implement %s()", __func__); - return EC_ERROR_UNIMPLEMENTED; -} - -int system_set_bbram(enum system_bbram_idx idx, uint8_t value) -{ - CPRINTS("TODO: implement %s()", __func__); - return EC_ERROR_UNIMPLEMENTED; -} - -void system_pre_init(void) -{ - check_reset_cause(); -} |