soc/intel/fsp_broadwell_de: move get_busno1() into vtd.c

TEST=just build it

Change-Id: I34aee507b8c322c816f92cfcae177c069c749ed7
Signed-off-by: Andrey Petrov <anpetrov@fb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35585
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Werner Zeh <werner.zeh@siemens.com>

src/soc/intel/fsp_broadwell_de/Makefile.inc

@@ -16,6 +16,7 @@ romstage-y += memmap.c
 romstage-y += tsc_freq.c
 romstage-y += smbus-imc.c
 romstage-y += ubox.c
+romstage-y += vtd.c
 
 postcar-y += tsc_freq.c
 

src/soc/intel/fsp_broadwell_de/include/soc/vtd.h

@@ -30,13 +30,6 @@
 #define   VTD_DFX1_RANGE_3F8_DISABLE      (1u << 29)
 #define   VTD_DFX1_RANGE_2F8_DISABLE      (1u << 30)
 
-static inline uint8_t get_busno1(void)
-{
-	uint32_t reg32;
-
-	/* Figure out what bus number is assigned for CPUBUSNO(1) */
-	reg32 = pci_mmio_read_config32(VTD_PCI_DEV, VTD_CPUBUSNO);
-	return ((reg32 >> VTD_CPUBUSNO_BUS1_SHIFT) & VTD_CPUBUSNO_BUS1_MASK);
-}
+uint8_t get_busno1(void);
 
 #endif

src/soc/intel/fsp_broadwell_de/vtd.c

@@ -18,8 +18,10 @@
 #include <device/pci_ids.h>
 #include <soc/pci_devs.h>
 #include <soc/acpi.h>
+#include <soc/vtd.h>
 #include <soc/broadwell_de.h>
 
+#if ENV_RAMSTAGE
 
 static void vtd_read_resources(struct device *dev)
 {
@@ -44,3 +46,14 @@ static const struct pci_driver vtd_driver __pci_driver = {
 	.vendor = PCI_VENDOR_ID_INTEL,
 	.device = VTD_DEVID,
 };
+
+#endif
+
+uint8_t get_busno1(void)
+{
+	uint32_t reg32;
+
+	/* Figure out what bus number is assigned for CPUBUSNO(1) */
+	reg32 = pci_mmio_read_config32(VTD_PCI_DEV, VTD_CPUBUSNO);
+	return ((reg32 >> VTD_CPUBUSNO_BUS1_SHIFT) & VTD_CPUBUSNO_BUS1_MASK);
+}