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-rw-r--r--src/northbridge/intel/i5000/Kconfig10
-rw-r--r--src/northbridge/intel/i5000/bootblock.c21
2 files changed, 30 insertions, 1 deletions
diff --git a/src/northbridge/intel/i5000/Kconfig b/src/northbridge/intel/i5000/Kconfig
index b9c3547770..f7344ca97d 100644
--- a/src/northbridge/intel/i5000/Kconfig
+++ b/src/northbridge/intel/i5000/Kconfig
@@ -20,9 +20,17 @@
config NORTHBRIDGE_INTEL_I5000
bool
select MMCONF_SUPPORT
+ select MMCONF_SUPPORT_DEFAULT
select HAVE_DEBUG_RAM_SETUP
+if NORTHBRIDGE_INTEL_I5000
+
config NORTHBRIDGE_INTEL_I5000_RAM_CHECK
bool
prompt "Run ramcheck after RAM initialization"
- depends on NORTHBRIDGE_INTEL_I5000
+
+config BOOTBLOCK_NORTHBRIDGE_INIT
+ string
+ default "northbridge/intel/i5000/bootblock.c"
+
+endif
diff --git a/src/northbridge/intel/i5000/bootblock.c b/src/northbridge/intel/i5000/bootblock.c
new file mode 100644
index 0000000000..eabbee6d63
--- /dev/null
+++ b/src/northbridge/intel/i5000/bootblock.c
@@ -0,0 +1,21 @@
+#include <arch/io.h>
+
+static void bootblock_northbridge_init(void)
+{
+ /*
+ * The "io" variant of the config access is explicitly used to
+ * setup the PCIEXBAR because CONFIG_MMCONF_SUPPORT_DEFAULT is set to
+ * to true. That way all subsequent non-explicit config accesses use
+ * MCFG. This code also assumes that bootblock_northbridge_init() is
+ * the first thing called in the non-asm boot block code. The final
+ * assumption is that no assembly code is using the
+ * CONFIG_MMCONF_SUPPORT_DEFAULT option to do PCI config acceses.
+ *
+ * The PCIEXBAR is assumed to live in the memory mapped IO space under
+ * 4GiB.
+ */
+
+ /* setup PCIe MMCONF base address */
+ pci_io_write_config32(PCI_DEV(0, 16, 0), 0x64,
+ CONFIG_MMCONF_BASE_ADDRESS >> 16);
+}