Some platforms are unable to access the 900h-9ffh region over LPC and
must instead access memmap data through the ACPI CMD / DATA ports. To
avoid racing with data updates, disallow changes to multi-byte memmap
data while in burst mode.
Linux currently enables burst mode when accessing multi-byte data and
disables it immediately afterward, though the ACPI spec defines burst mode
in a more general way.
BUG=chrome-os-partner:38224
TEST=Manual on Samus. Undefine LPC_MEMMAP and modify asl to move memmap
data to ERAM at offset 0x20. Verify system boots cleanly and battery
status is updated immediately on plug / unplug.
BRANCH=None
Change-Id: Ib848bdb491fdfece96ad0cee7a44ba85b4a1a50b
Signed-off-by: Shawn Nematbakhsh <shawnn@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/262072
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Our code base contains a lot of debug messages in this pattern:
CPRINTF("[%T xxx]\n") or ccprintf("[%T xxx]\n")
The strings are taking up spaces in the EC binaries, so let's refactor
this by adding cprints() and ccprints().
cprints() is just like cprintf(), except that it adds the brackets
and the timestamp. ccprints() is equivalent to cprints(CC_CONSOLE, ...)
This saves us hundreds of bytes in EC binaries.
BUG=chromium:374575
TEST=Build and check flash size
BRANCH=None
Change-Id: Ifafe8dc1b80e698b28ed42b70518c7917b49ee51
Signed-off-by: Vic Yang <victoryang@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/200490
Reviewed-by: Randall Spangler <rspangler@chromium.org>
The spec does not mandate any way to read back the threshold settings
themselves, but when a threshold is crossed the AP needs a way to determine
which sensor(s) are responsible. Each reading of the EC_ACPI_MEM_TEMP_ID
register clears and returns one sensor ID that has crossed one of its
thresholds (in either direction) since the last read. A value of 0xFF means
"no new thresholds have tripped". Changing or enabling the thresholds for
any sensor will clear the unread event count for that sensor.
BUG=chrome-os-partner:23970
BRANCH=none
TEST=manual
On the host, set a couple of thresholds to low values so they trip
immediately (I'm testing on Link):
# dptf() {
[ "$#" -eq "2" ] || return;
iotools io_write8 0x66 0x81
iotools io_write8 0x62 $1
iotools io_write8 0x62 $2
}
#
# dptf 5 0
# dptf 6 10
# dptf 7 3
# dptf 5 2
# dptf 6 10
# dptf 7 2
On the EC console, see that two thresholds have triggered, and that there
are two bits set in the AP seen mask:
[45.755365 DPTF sensor 0, threshold -63 C, index 1, enabled]
[45.768940 DPTF sensor 2, threshold -63 C, index 0, enabled]
[46.169490 DPTF over threshold [0][1]
[46.169820 DPTF over threshold [2][0]
> dptftemp
sensor thresh0 thresh1
0 --- 210* I2C-USB C-Die
1 --- --- I2C-USB C-Object
2 210* --- I2C-PCH D-Die
3 --- --- I2C-PCH D-Object
4 --- --- I2C-Hinge C-Die
5 --- --- I2C-Hinge C-Object
6 --- --- I2C-Charger D-Die
7 --- --- I2C-Charger D-Object
8 --- --- ECInternal
9 --- --- PECI
AP seen mask: 0x00000005
>
Read the EC_ACPI_MEM_TEMP_ID register from the host, to get the two active
sensor IDs (0 and 2), then 0xff when those are seen.
# iotools io_write8 0x66 0x80; iotools io_write8 0x62 5; iotools io_read8 0x62
0x00
# iotools io_write8 0x66 0x80; iotools io_write8 0x62 5; iotools io_read8 0x62
0x02
# iotools io_write8 0x66 0x80; iotools io_write8 0x62 5; iotools io_read8 0x62
0xff
# iotools io_write8 0x66 0x80; iotools io_write8 0x62 5; iotools io_read8 0x62
0xff
#
Change-Id: I8f047a517357617f18ad59d21fa13409bc81821b
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/180224
Reviewed-by: Randall Spangler <rspangler@chromium.org>
This adds three new registers to the ACPI->EC interface, which will allow
the AP to set/clear two DPTF thermal threshold points for each temp sensor.
The registers are
EC_ACPI_MEM_TEMP_ID 0x05
EC_ACPI_MEM_TEMP_THRESHOLD 0x06
EC_ACPI_MEM_TEMP_COMMIT 0x07
It doesn't actually do anything yet, but the AP can now write those values.
BUG=chrome-os-partner:23970
BRANCH=none
TEST=manual
On the host:
dptf() {
[ "$#" -eq "2" ] || return;
iotools io_write8 0x66 0x81
iotools io_write8 0x62 $1
iotools io_write8 0x62 $2
}
Now watch the EC console while running on the host:
dptf 5 1
dptf 6 80
dptf 7 2
dptf 7 3
The EC should say
DPTF sensor 1, threshold 7 C, index 0, enabled
DPTF sensor 1, threshold 7 C, index 1, enabled
Change-Id: I71fa57e3ca7c7b5bb8892e63212bf294b44dece5
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/179778
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-by: Randall Spangler <rspangler@chromium.org>
