Randall Spangler ad2adc4022 Invalidate hash if flash operation changes the hashed region ...

This prevents the EC from returning a stale hash.

BUG=chrome-os-partner:16668
BRANCH=link,snow
TEST=manual, with WP disabled

From EC console
- Boot system and wait a second
- hash --> prints valid hash
- flasherase 0x20000 0x1000
- hash --> invalid
- hash rw
- hash --> prints valid hash
- flashwrite 0x20000 0x1000
- hash --> invalid
- hash rw
- flasherase 0x38000 0x1000
- flashwrite 0x38000 0x1000
- hash --> still valid (since 0x38000 is outside the rw section)

From root shell
- ectool hash --> prints valid hash
- ectool flasherase 0x20000 0x1000
- ectool hash --> invalid
- ectool hash recalc RW
- ectool hash --> prints valid hash
- echo 'Making a hash of this' > /tmp/hashofthis
- ectool flashwrite 0x20000 /tmp/hashofthis
- ectool hash --> invalid
- ectool hash recalc RW
- ectool flasherase 0x38000 0x1000
- ectool flashwrite 0x38000 /tmp/hashofthis
- ectool hash --> still valid (since 0x38000 is outside the rw section)

Change-Id: Id915a504a7bc70b8b8c339b5ce55dc5bad5838fe
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/39484
Reviewed-by: Bill Richardson <wfrichar@chromium.org>

2012-12-10 15:14:38 -08:00

..

adc.h

Clean up ADC module

2012-10-30 10:45:07 -07:00

battery_pack.h

Cleanup: battery

2012-10-24 10:09:20 -07:00

battery.h

Set minimum brightness to 35%, variable osc settings.

2012-10-14 18:57:58 -07:00

charge_state.h

Use SECOND and MSEC constants

2012-10-29 16:52:49 -07:00

charger_bq24725.h

Cleanup - includes go in include dir

2012-05-25 09:59:58 -07:00

charger.h

Only ask the charger for current steps it can supply

2012-09-24 10:56:50 -07:00

chip_temp_sensor.h

Switch temp sensor polling to use hooks instead of task

2012-11-01 12:45:22 -07:00

chipset.h

Move reset/overheat/shutdown funcs to chipset interface

2012-11-01 12:45:28 -07:00

clock.h

Clean up clock module

2012-10-30 12:42:47 -07:00

common.h

link: Temp sensors can return not-powered error code

2012-10-11 14:24:36 -07:00

console.h

Rename power_button module to switch

2012-10-30 14:50:03 -07:00

ec_commands.h

link: allow to decrease maximum battery charging current

2012-11-07 23:48:04 -08:00

eeprom.h

Initial sources import 1/3

2011-12-07 19:10:02 +00:00

eoption.h

Clean up a few modules in common/

2012-10-26 09:49:38 -07:00

flash.h

Cleanup: flash module

2012-10-25 11:24:04 -07:00

gpio.h

Clean up GPIO module.

2012-10-30 12:42:46 -07:00

hooks.h

Add per-second hook

2012-10-30 15:33:25 -07:00

host_command.h

Copy host command params out of LPC space during checksumming

2012-08-28 14:05:08 -07:00

hwtimer.h

add a function to fast forward system timer

2012-08-06 18:55:00 -07:00

i2c.h

Implement board-level I2C arbitration

2012-06-29 10:46:22 -07:00

i8042_protocol.h

More supports for A20 enable/disable

2012-11-04 20:27:57 -08:00

i8042.h

Clean up i8042 module

2012-10-23 17:32:01 -07:00

jtag.h

Clean up jtag module

2012-10-30 12:42:46 -07:00

keyboard_scan.h

Clean up keyboard_scan module

2012-10-23 17:32:02 -07:00

keyboard_test.h

stm32: Implement keyscan test infrastructure

2012-10-31 17:21:00 -07:00

keyboard.h

Misc keyboard module cleanup

2012-06-07 09:59:55 -07:00

lightbar_msg_list.h

Create host-side lightbar bikeshedding tool.

2012-04-26 13:57:19 -07:00

lightbar.h

Cleanup: move lightbar command enum into ec_commands.h

2012-09-11 09:46:16 -07:00

lpc.h

More supports for A20 enable/disable

2012-11-04 20:27:57 -08:00

memory_commands.h

Initial sources import 2/3

2011-12-07 19:10:02 +00:00

onewire.h

Clean up LED and onewire modules

2012-10-25 14:12:11 -07:00

panic.h

Consolidate emergency debug output

2012-10-29 10:36:05 -07:00

peci.h

Switch temp sensor polling to use hooks instead of task

2012-11-01 12:45:22 -07:00

pmu_tpschrome.h

Add TPSChrome FET API

2012-09-21 14:54:33 -07:00

port80.h

port80: Track and export last post code in previous boot

2012-08-13 14:58:38 -07:00

power_led.h

Clean up LED and onewire modules

2012-10-25 14:12:11 -07:00

powerdemo.h

Initial sources import 1/3

2011-12-07 19:10:02 +00:00

printf.h

Clean up printf module

2012-10-25 14:12:10 -07:00

pwm.h

Clean up pwm module

2012-10-25 17:03:44 -07:00

queue.h

Refactor the i8042 module to be thread-safe.

2012-06-07 20:48:51 -07:00

sha256.h

Clean up vboot hash support

2012-10-25 17:03:44 -07:00

shared_mem.h

Tidy shared memory module

2012-08-09 17:40:37 -07:00

smart_battery_stub.h

Stub smart battery read/write functions

2012-06-27 03:22:17 -07:00

smart_battery.h

Stub smart battery read/write functions

2012-06-27 03:22:17 -07:00

spi.h

spi: Rewrite driver for new protocol, better performance

2012-09-17 10:10:14 -07:00

switch.h

Rename power_button module to switch

2012-10-30 14:50:03 -07:00

system.h

Clean up system module

2012-10-25 17:03:43 -07:00

task_id.h

Switch to variable-size stacks

2012-09-09 11:00:34 -07:00

task.h

link: Fix overflow in hibernate time calculation

2012-11-01 10:08:54 -07:00

temp_sensor.h

Switch temp sensor polling to use hooks instead of task

2012-11-01 12:45:22 -07:00

thermal.h

Clean up thermal modules

2012-10-26 13:10:57 -07:00

timer.h

Use SECOND and MSEC constants

2012-10-29 16:52:49 -07:00

tmp006.h

Switch temp sensor polling to use hooks instead of task

2012-11-01 12:45:22 -07:00

uart.h

Clean up UART module

2012-10-30 12:42:43 -07:00

usb_charge.h

Clean up USB charging module

2012-10-26 09:49:37 -07:00

util.h

Track amount of stack used for each EC task

2012-09-07 16:54:31 -07:00

vboot_hash.h

Invalidate hash if flash operation changes the hashed region

2012-12-10 15:14:38 -08:00

version.h

Use __packed instead of __attribute__((packed))

2012-06-28 17:40:39 -07:00

watchdog.h

Watchdog is reloaded by HOOK_TICK, not its own task

2012-10-30 15:33:24 -07:00

x86_power.h

Move reset/overheat/shutdown funcs to chipset interface

2012-11-01 12:45:28 -07:00