[coreboot-gerrit] Change in coreboot[master]: soc/intel/cmn/fast-spi: Add flash as reserved region

[Werner Zeh (Code Review)]

Werner Zeh has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/64077 )

Change subject: soc/intel/cmn/fast-spi: Add flash as reserved region
......................................................................

soc/intel/cmn/fast-spi: Add flash as reserved region

Add the boot flash MMIO window to the resources to report this region as
reserved to the OS.

Change-Id: Ib3a77e9233c3c63bad4de926670edb4545ceaddf
Signed-off-by: Werner Zeh 
---
M src/soc/intel/common/block/fast_spi/fast_spi.c
1 file changed, 12 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/77/64077/1

diff --git a/src/soc/intel/common/block/fast_spi/fast_spi.c b/src/soc/intel/common/block/fast_spi/fast_spi.c
index 19b3db7..7b736d6 100644
--- a/src/soc/intel/common/block/fast_spi/fast_spi.c
+++ b/src/soc/intel/common/block/fast_spi/fast_spi.c
@@ -22,6 +22,8 @@
 #include <spi_flash.h>
 #include <spi-generic.h>

+#define FLASH_BASE_ADDR		((0xffffffff - CONFIG_ROM_SIZE) + 1)
+
 /*
  * Get the FAST_SPIBAR.
  */
@@ -517,8 +519,17 @@

#endif

+static void fast_spi_read_resources(struct device *dev)
+{
+	/* Read standard PCI resources. */
+	pci_dev_read_resources(dev);
+
+	/* Add SPI boot flash as a reserved resource. */
+	mmio_resource(dev, 0, FLASH_BASE_ADDR / KiB, CONFIG_ROM_SIZE / KiB);
+}
+
 static struct device_operations fast_spi_dev_ops = {
-	.read_resources			= pci_dev_read_resources,
+	.read_resources			= fast_spi_read_resources,
    .set_resources			= pci_dev_set_resources,
    .enable_resources		= pci_dev_enable_resources,
 #if CONFIG(HAVE_ACPI_TABLES)