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x86: Allow removal of standard PCH drivers

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These drivers are not needed on all platforms. While they are small, it
is useful in TPL to drop then. Add Kconfig control to allow this.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2019-12-06 21:42:14 -07:00 committed by Bin Meng
parent 69b1e9f4f8
commit 26047f6029
2 changed files with 20 additions and 2 deletions
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18
drivers/pch/Kconfig
View File

@ -7,3 +7,21 @@ config PCH
northbridge / southbridge architecture that was previously used. The
PCH allows for higher performance since the memory functions are
handled in the CPU.
config X86_PCH7
bool "Add support for Intel PCH7"
default y if X86
help
Enable this if your SoC uses Platform Controller Hub 7 (PCH7). This
dates from about 2011 and is used on baytrail, for example. The
PCH provides access to the GPIO and SPI base addresses, among other
functions.
config X86_PCH9
bool "Add support for Intel PCH9"
default y if X86
help
Enable this if your SoC uses Platform Controller Hub 9 (PCH9). This
dates from about 2015 and is used on baytrail, for example. The
PCH provides access to the GPIO and SPI base addresses, among other
functions.

4
drivers/pch/Makefile
View File

@ -1,6 +1,6 @@
# SPDX-License-Identifier: GPL-2.0+
obj-y += pch-uclass.o
obj-y += pch7.o
obj-y += pch9.o
obj-$(CONFIG_X86_PCH7) += pch7.o
obj-$(CONFIG_X86_PCH9) += pch9.o
obj-$(CONFIG_SANDBOX) += sandbox_pch.o