From b53280ab53e19746be04b67f73f9ce230038b1ee Mon Sep 17 00:00:00 2001 From: Furquan Shaikh Date: Wed, 25 Nov 2020 14:30:15 -0800 Subject: soc/intel/common/systemagent: Reserve window used for extended BIOS decoding This change reserves the window used for extended BIOS decoding as a fixed MMIO resource using read_resources callback in systemagent driver. This ensures that the resource allocator does not allocate from this window. Additionally, this window is also marked as fixed memory region in _CRS for PNP0C02 device. BUG=b:171534504 Signed-off-by: Furquan Shaikh Change-Id: I42b5a0ebda2627f72b825551c566cd22dbc5cca7 Reviewed-on: https://review.coreboot.org/c/coreboot/+/48184 Tested-by: build bot (Jenkins) Reviewed-by: Tim Wawrzynczak --- src/soc/intel/common/block/systemagent/systemagent.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'src/soc/intel/common/block/systemagent/systemagent.c') diff --git a/src/soc/intel/common/block/systemagent/systemagent.c b/src/soc/intel/common/block/systemagent/systemagent.c index 4c5731f9ca..6b039e1c01 100644 --- a/src/soc/intel/common/block/systemagent/systemagent.c +++ b/src/soc/intel/common/block/systemagent/systemagent.c @@ -287,6 +287,11 @@ static void systemagent_read_resources(struct device *dev) if (CONFIG(SA_ENABLE_IMR)) /* Add the isolated memory ranges (IMRs). */ sa_add_imr_resources(dev, &index); + + /* Reserve the window used for extended BIOS decoding. */ + if (CONFIG(FAST_SPI_SUPPORTS_EXT_BIOS_WINDOW)) + mmio_resource(dev, index++, CONFIG_EXT_BIOS_WIN_BASE / KiB, + CONFIG_EXT_BIOS_WIN_SIZE / KiB); } void enable_power_aware_intr(void) -- cgit v1.2.3