diff options
| author | Bill Richardson <wfrichar@chromium.org> | 2013-06-12 10:50:41 -0700 |
|---|---|---|
| committer | Stefan Reinauer <stefan.reinauer@coreboot.org> | 2013-07-10 21:45:11 +0200 |
| commit | e221aad27fb860f31be089180d920df9d2243ae2 (patch) | |
| tree | 09844ef16338d4d8f785022f35c2f89a320b0dff /src/ec/google/chromeec/acpi | |
| parent | a86c33a31a6c3faa91df12ee3e592a98f5702bc6 (diff) | |
ec: Reserve correct ioport regions for Chrome OS EC to use
The LPC-based ChromeOS EC uses several ioport regions to communicate with
the AP. In order for the new unified userspace access method to work, we
need them to be reserved by the BIOS.
Before /proc/ioports shows:
0800-0803
0804-08ff
We'd like just a single 256-byte region at 0x800, but ASL can't handle that.
So this will work:
0800-087f
0880-08ff
Change-Id: I3f8060bff32d3a49f1488b26830ae26b83dab79d
Signed-off-by: Bill Richardson <wfrichar@chromium.org>
Reviewed-on: http://review.coreboot.org/3746
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'src/ec/google/chromeec/acpi')
| -rw-r--r-- | src/ec/google/chromeec/acpi/superio.asl | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/src/ec/google/chromeec/acpi/superio.asl b/src/ec/google/chromeec/acpi/superio.asl index 4f7133288a..39ddd29bdd 100644 --- a/src/ec/google/chromeec/acpi/superio.asl +++ b/src/ec/google/chromeec/acpi/superio.asl @@ -29,8 +29,9 @@ * SIO_EC_HOST_ENABLE : Enable EC host command interface resources * EC_LPC_ADDR_HOST_DATA : EC host command interface data port * EC_LPC_ADDR_HOST_CMD : EC host command interface command port - * EC_LPC_ADDR_HOST_ARGS : EC host command arguments - * EC_LPC_ADDR_HOST_PARAM : EC host command parameter buffer + * EC_HOST_CMD_REGION0 : EC host command buffer + * EC_HOST_CMD_REGION1 : EC host command buffer + * EC_HOST_CMD_REGION_SIZE : EC host command buffer size */ // Scope is \_SB.PCI0.LPCB @@ -75,9 +76,8 @@ Device (SIO) { { FixedIO (EC_LPC_ADDR_HOST_DATA, 1) FixedIO (EC_LPC_ADDR_HOST_CMD, 1) - FixedIO (EC_LPC_ADDR_HOST_ARGS, 4) - FixedIO (EC_LPC_ADDR_HOST_PARAM, - EC_HOST_PARAM_SIZE) + FixedIO (EC_HOST_CMD_REGION0, EC_HOST_CMD_REGION_SIZE) + FixedIO (EC_HOST_CMD_REGION1, EC_HOST_CMD_REGION_SIZE) }) Name (_PRS, ResourceTemplate () @@ -85,9 +85,10 @@ Device (SIO) { StartDependentFn (0, 0) { FixedIO (EC_LPC_ADDR_HOST_DATA, 1) FixedIO (EC_LPC_ADDR_HOST_CMD, 1) - FixedIO (EC_LPC_ADDR_HOST_ARGS, 4) - FixedIO (EC_LPC_ADDR_HOST_PARAM, - EC_HOST_PARAM_SIZE) + FixedIO (EC_HOST_CMD_REGION0, + EC_HOST_CMD_REGION_SIZE) + FixedIO (EC_HOST_CMD_REGION1, + EC_HOST_CMD_REGION_SIZE) } EndDependentFn () }) |