| # Copyright 2021 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. |
| |
| description "Flash ro of hps before hpsd starts" |
| author "chromium-os-dev@chromium.org" |
| |
| # hpsd will still start if this fails |
| # we could add this to hpsd.conf if needed: |
| # start on stopped hpsd_roflash RESULT=ok |
| start on starting hpsd |
| task |
| |
| # It is OK for this to be killed, restarting will recover |
| oom score -100 |
| # A trial run used 1.6 Mbytes. * 100 headroom |
| limit as 160000000 unlimited |
| |
| env MMIO_ADDR=0xfd6a0ae0 |
| env FLASH_ADDR=0x08000400 |
| env I2C_BUS_NUMBER=15 |
| env STAGE0_FIRMWARE=/usr/lib/firmware/hps/mcu_stage0.bin |
| |
| # toggle power to reboot to the stm bootloader, flash, and boot |
| script |
| iotools mmio_write32 "${MMIO_ADDR}" \ |
| $(iotools btr $(iotools mmio_read32 "${MMIO_ADDR}") 0) \ |
| && iotools mmio_write32 "${MMIO_ADDR}" \ |
| $(iotools bts $(iotools mmio_read32 "${MMIO_ADDR}") 0) \ |
| && syslog-cat --identifier="${UPSTART_JOB}" -- \ |
| stm32flash "/dev/i2c-${I2C_BUS_NUMBER}" -a 0x51 -v -S "${FLASH_ADDR}" \ |
| -w "${STAGE0_FIRMWARE}" \ |
| && syslog-cat --identifier="${UPSTART_JOB}" -- \ |
| stm32flash "/dev/i2c-${I2C_BUS_NUMBER}" -a 0x51 -g "${FLASH_ADDR}" |
| end script |
