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superio/common: Add ssdtgen for generic SuperIOs

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Add a generic SuperIO ACPI generator, dropping the need to include
additional code in DSDT for SuperIO.

It generates a device HID based on the decoded I/O range.

Tested on Supermicro X11SSH-TF using AST2400.
The SSDT contains no errors and all devices are present.

Possible TODOs:
* Add "enter config" and "exit config" bytes
* Generate support methods to enter and exit config mode
* Generate support methods to query, change or disable current
  resource settings on specific LDNs

Change-Id: I2716ae0580d68e5d4fcc484cb1648a2cdc1f4ca0
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33033
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
This commit is contained in:
Patrick Rudolph
2019-05-28 11:29:29 +02:00
committed by Patrick Georgi
parent 6b2a54030f
commit c162131d00
7 changed files with 550 additions and 0 deletions
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3
Documentation/superio/index.md
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@@ -5,3 +5,6 @@ This section contains documentation about coreboot on specific SuperIOs.
## Nuvoton
- [NPCD378](nuvoton/npcd378.md)
## Common
- [SSDT generator for generic SuperIOs](common/ssdt.md)