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-rw-r--r--src/northbridge/amd/pi/Kconfig12
-rw-r--r--src/northbridge/amd/pi/agesawrapper.c3
2 files changed, 14 insertions, 1 deletions
diff --git a/src/northbridge/amd/pi/Kconfig b/src/northbridge/amd/pi/Kconfig
index 122b0e6d32..f5f36f8802 100644
--- a/src/northbridge/amd/pi/Kconfig
+++ b/src/northbridge/amd/pi/Kconfig
@@ -20,6 +20,18 @@ config NORTHBRIDGE_AMD_PI
if NORTHBRIDGE_AMD_PI
+config BOTTOMIO_POSITION
+ hex "Bottom of 32-bit IO space"
+ default 0xD0000000
+ help
+ If PCI peripherals with big BARs are connected to the system
+ the bottom of the IO must be decreased to allocate such
+ devices.
+
+ Declare the beginning of the 128MB-aligned MMIO region. This
+ option is useful when PCI peripherals requesting large address
+ ranges are present.
+
config CONSOLE_VGA_MULTI
bool
default n
diff --git a/src/northbridge/amd/pi/agesawrapper.c b/src/northbridge/amd/pi/agesawrapper.c
index 8e16e750d0..0fe8eab01c 100644
--- a/src/northbridge/amd/pi/agesawrapper.c
+++ b/src/northbridge/amd/pi/agesawrapper.c
@@ -140,7 +140,8 @@ AGESA_STATUS agesawrapper_amdinitpost(void)
// the compiler to flag the error if CONFIG_GFXUMA is not set.
PostParams->MemConfig.UmaMode = CONFIG_GFXUMA ? UMA_AUTO : UMA_NONE;
PostParams->MemConfig.UmaSize = 0;
- PostParams->MemConfig.BottomIo = (UINT16)(0xD0000000 >> 24);
+ PostParams->MemConfig.BottomIo = (UINT16)
+ (CONFIG_BOTTOMIO_POSITION >> 24);
status = AmdInitPost (PostParams);
printk(
BIOS_SPEW,