EC 1.75 Firmware

Production

Ver: 4 1.0.01

• Check EEPROM bank 0 magic values and fix if wrong
• Print out the ACR value on entry into suspend
• Re-implement SD2 power control. EC Command 0x6f Argument u8. Non-zero to to power up 0 to power down.
• released in OLPC_Firmware_q4d26.

Ver: 4 1.0.00

• Turn off run-in enabled battery debugging messages on powerup
• released in OLPC_Firmware_q4d25.

Ver: 4 0.5.00

• Hack to allow the mmp2 A1 board to be supported
• Remove support for A3 boards, and version 1 of the power limit code
• Remove A1/A2 support, no reason to support non-ISL charger
• Rework A/D reading for less code when only 8-bit values are needed this simplifies the board identification code as well

C2/Ramp

Ver: 4 0.4.03

• Automatically turn off USB hub power when host is suspended
• Add power off USB hub SDI command
• Increase stop mode entry timer to 3s when power is off
• Add new SDI command for retrieving power while suspended
• Fix trac #11760. EC always charges battery after reset
• Clear battery full flag on runin discharge
• Set max sys voltage (battery CV) to 7.44V
• Set battery full taper current to 120mA via human readable macro
• Fix battery low voltage count reset
• Lower minimum system/battery voltage to 4.950

Ver: 0.4.02

• handle upstream command responses before events
• add command for sending repetitive events, for stress testing
• eliminate extra AC-changed events
• set the default event_mask to all-unmasked
• implement a mask to control upstream event delivery
• shorten EC_IRQ assertion
• ifdef the EC_IRQ exerciser command

Ver: 0.4.01

• Add timestamp on SDI: waking message
• Add _tst to the make RELEASE file name output
• Disable RUNIN discharge if battery goes critical
• broaden EC's notion of "suspend"
• add timestamp to suspend_hint and SOC_SLEEP transitions

Ver: 0.4.00

• Add HOST NOT READY checking into all the SDI wait states
• Fix CP flag power ups
• Log last 4 bytes of the suspend hint as a suspend identifier
• Log all suspend_hint and SOC_SLEEP transitions
• New status check, returns suspend hint status

Download: 0.4.00

C1 Prototype

Ver: 0.3.07

• Protect against 8051 core CPU bug involving MOVC/CJNE pairs
• Prevent buffer overflow from internally generated version strings
• Neuter the useless and annoying boot checksum

Ver: 0.3.06

• add code to assist preserving the keystroke that wakes SoC from sleep
• Update board ID for C2 Ramp
• Make sure battery state timer is initialized on battery insert
• Reduce system hard power off voltage to 5.4V
• Prevent ACR sync from exceeding SOC bounds
• Adjust the 1% tick ACR value based on a calibrations from pwr logs
• Fix Trac #11420 problem 2 -- Power up failure after critical shutdown

Ver: 0.3.05

• Correct OLS event reporting
• Decrease the maximum input wattage to compensate for tolerance.
• Add EC protocol support for OLS commands
• Add support for OLS hysteresis, and bright/dark events
• Add new OLS commands and event identifiers

Ver: 0.3.04

• Implement timed wakeups
• Configure GPIO_CMD to wake us when SOC_SLEEP is unavailable. This lets us stop the EC on B3 and earlier boards.
• Use the full resolution of the watchdog timer
• Don't switch to internal oscillator during stop mode

Ver: 0.3.03

• Don't enter stop mode if battery debug is active
• Don't configure SOC_SLEEP for wakeups when board isn't powered otherwise the it may cause continuous wakeups.
• Disable serial RX wakeups
• Add command to let B-series boards know SoC is suspending
• Send different events for waking/running power button presses
• use EC_IRQ# to wake the SoC from suspend before upstream events

Ver: 0.3.02

• Work around PWR_LMT_ON glitch when charging starts
• Increase the min system voltage to 7.45V

Ver: 0.3.01

• Drop max system voltage to 7.4V
• Restore lost ACR print in battery 'b3' debug
• Give low battery power off command time to complete
• Make a full battery SOC = 100%
• Clear battery stats on battery reset
• Increase max power draw to 24W/25W
• Don't print MPPT enabled/disabled twice
• Add bat debug print of the PWR_LMT_ON signal for wad
• Add missing default settings for 0x1c1
• add code to allow a power button press in suspend to interrupt SoC
• Augment battery debug info with whether laptop is sleeping or not.
• Implement ability to interrupt SoC with EC_IRQ#
• Fix delay loop timing (slightly)
• Sync sdcc makefile's file list with keil makefile
• Calibrate serial baud rate at boot
• Retune 1ms tick, now we're properly using external crystal
• Fix CRY32CR settings to use external oscillator
• Add an incrementing build index to developer-build version strings

Ver: 0.3.00

• Fully implement suspend power blinking
• rename *_SLEEP_IND functions to *_VCXO_EN, and invert level
• Rework SDI host (ACK state) handling
• Enable touchpad by default for < 0x1B1
• Introduce workaround for ljmp bug
• Fully init the gpwu on every reboot

Download: 0.3.00

B1 Prototype

Ver: 0.2.04

Download: 0.2.04

• Workaround for EC hang after EDI reset.
• Add support for 0x1b4 boards
• Use SLEEP_IND input to put the EC into stop mode when SoC suspends
• Differentiate between manual and automatic enter_stop_mode() calls
• Fix watchdog duration to compensate for interrupt at half the configured timeout.

for that.

• Replace double-stop hack w/ EnE's fix for powering down A/D module
• Add check against low-valued stack pointer bug
• Do a more complete init/deinit of the ADC module
• Disable PS/2 clock when not using PS/2
• Renumber a few (unused) EC commands to fix conflicts with previous generations.
• Fix keil environment stack bug
• New Vin scaled and battery power min, max, reset commands
• Remove dead code from MPPT dropping support for < 0x1b3 boards
• Add UART RX to wakeup signals
• Make other debug output integrate with MPPT debug output
• makefile tweak
• Enhanced MPPT (plimit_v2) via LV_SET.
• Makefile update to reserve EC flags area
• Add power limit to battery debug display
• Remove usage of legacy TurnOffSystemPower
• Drop SDI upstream packets if host is not ready
• Fix compile breakage if the PS/2 code is removed
• Format SDI debug output so its easier to read
• Clear cmdresp queue when starting up SDI
• Make power sequencing come up in TURN_OFF mode
• Enable EC flags
• Handle OLS# moving on > 1B2 board IDs
• Add support board 1B3 and LV_SET on PWM 2
• Fast resolve of external ACR changes on battery insert
• modify calculation of EnE checksum to exclude new tag area
• Fix board identification to allow full use of 64 different id values

Ver: 0.2.03

• Several new monitor debugging commands
• Support and enable power limit v2 circuitry
• Fix charger functions to update last_charge_current
• Re-Init battery debug timer on settings change
• Make sure runin is disabled on startup
• Disable battery LED output when we sleep
• Prepare for PS/2 code removal
• Add more power sequencing debug output
• implement CMD_SET_DCON_POWER, to power the DCON down

Ver: 0.2.00

(seen in OFW svn 2350 no other data yet)

Ver: 0.1.04

Download: 0.1.04

• Fix broken charging on A2 boards.

Ver: 0.1.03

Download: 0.1.03

• Decrease the OLS sample rate to 500ms
• Rework the OLS SMT test for OFW control
• Make B phase boards no-op the KBD power GPIO.

(Also functions on A3).

(Incompatible with A2, causes excess charge voltage).

A3 Prototype

Ver: 0.1.02

Download: 0.1.02

• OFW error: "rxavail = 4" fix
• Fix building with io as macros turned off
• Support reading the PWR_LMT_ON signal
• Add SMT and ASSEMBLY testing modes to OLS
• Add support for auto power up after reflash.
• Report power button presses to the soc via an event
• Make keyboard/touchpad debug output runtime controllable

Ver: 0.1.01

Download: 0.1.01

• Keep OLS LED from blinking
• Fix small error in keymaping for mechanical keyboard
• Rename ALS to OLS per wad's request
• update to latest development version naming scheme
• notify the kernel when we artifically disable charging
• implement a new upstream channel for command error reporting
• implement support for battery status event reporting
• implement SOC change event reporting
• fix AC status change reporting
• fix event reporting for abnormal battery conditions
• Add keymapping.csv into reppository

Ver: 0.0.11

Download: 0.0.11

• fix missing battery current in mA calculation
• reduce nominal input power to about 18 watts
• fix sporadic ISL communication errors
• fix MAIN_PWR to VCORE enable timing
• drop I1 from mppt debug print
• add EC cmd to get the EC version hash
• ambient light sensor support
• fix CHG statement in LiFe debug print
• fix missing battery LED state if MPPT stops charging
• add serial EC boot message

Ver: 0.0.10 (never released)

• fix GPWU register save/restore
• don't clear the ADC interrupt flag
• update ambient light sensor pins for A3
• add A3 board id
• new charger chip support
• solar maximum power point tracking merge from XO-1.5

A2 Prototype

Ver: 0.0.9

Download: 0.0.9

• reset keyboard module state when powering up the board
• add quick blink when power button has been debounced
• add ambient light sensor prototype code (requires custom hardware, or wait for A3)
• implement CMD_POWER_CYCLE

Ver: 0.0.8

Download: 0.0.8

• fix typo affecting initial state of EN_3_3V_SOC
• disable power controls during stop mode (safe, since we know the board is off at this point), to reduce leakage
• add git hash to version info
• fix handling of uppercase hex digits in tohex(), and "make format"
• disable more internal clocks, guided by new EnE docs
• add CMD_RESET_EC and CMD_RESET_EC_SOFT protocol commands, for resetting the 8051 core, and the whole chip, respectively.
• add 'r'eset command, and rearrange watchdog exercise commands.
• use internal oscillator for watchdog, so it runs in stop mode, and add watchdog_reboot() routine.
• fix bug in enable/disable_EN_SD[12] macros
• turn off trim_tune() debug output, and enable stop mode.
• turn off stop mode debug output
• disable the spi host controller in powerdown state, to reduce leakage.
• add commands for more watchdog control, for debug
• reintroduce failsave recover loop at top of main.
• configure the EDI CS input to wake us, so we can program the EC when in STOP mode.
• make the AC input wakeup work, by switching to edge-triggered from toggle-triggered. toggle-triggered should have worked.
• get rid of extra wakeup PF flag, by setting GPIO2D (TP167, used for the gpt3 timer output heartbeat) to output-only. also ifdef the stop-mode debug code. AC jack wakeups are still disabled.
• Add delay prior to entering stop mode.
• Make main_io3731 the default main.c via symlink
• fix initial copyright

Ver: 0.0.7

• Internal non-released test version.

Ver: 0.0.6

Download: 0.0.6

• Fix touchpad

Ver: 0.0.5

Download: 0.0.5

• Initial cut at adding stop mode. disabled by default for now.
• fix the clearing of the power-off command flag
• Shorten the cycle_led times.
• add a bunch of debugging output for the trim registers
• add io support for the RESTORE pin, and an sfr for the PCON register. also formatting.
• Enable board ID reading
• Wait for the flash trim read to complete before reading the data
• Fix battery error LED state not set on battery error

Ver: 0.0.4

Download: 0.0.4

• Enable battery charging
• Implement api for poweroff add debug code for showing power states.

Ver: 0.0.2

Download: 0.0.2

• Enable/Fix EC<->Host communication
• Enable/Fix Keyboard stream.

Source

• http://dev.laptop.org/git/users/rsmith/ec-1.75/