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-rw-r--r--src/soc/intel/fsp_broadwell_de/include/soc/pci_devs.h1
-rw-r--r--src/soc/intel/fsp_broadwell_de/include/soc/vtd.h13
-rw-r--r--src/soc/intel/fsp_broadwell_de/romstage/romstage.c16
3 files changed, 19 insertions, 11 deletions
diff --git a/src/soc/intel/fsp_broadwell_de/include/soc/pci_devs.h b/src/soc/intel/fsp_broadwell_de/include/soc/pci_devs.h
index 973f55983b..58591dcda0 100644
--- a/src/soc/intel/fsp_broadwell_de/include/soc/pci_devs.h
+++ b/src/soc/intel/fsp_broadwell_de/include/soc/pci_devs.h
@@ -32,6 +32,7 @@
#define VTD_FUNC 0
#define VTD_DEVID 0x6f28
#define VTD_DEV_FUNC PCI_DEVFN(VTD_DEV, VTD_FUNC)
+#define VTD_PCI_DEV PCI_DEV(BUS0, VTD_DEV, VTD_FUNC)
#define LPC_DEV 31
#define LPC_FUNC 0
diff --git a/src/soc/intel/fsp_broadwell_de/include/soc/vtd.h b/src/soc/intel/fsp_broadwell_de/include/soc/vtd.h
index 43da267dce..814cba02cd 100644
--- a/src/soc/intel/fsp_broadwell_de/include/soc/vtd.h
+++ b/src/soc/intel/fsp_broadwell_de/include/soc/vtd.h
@@ -16,6 +16,9 @@
#ifndef _BROADWELL_VTD_H_
#define _BROADWELL_VTD_H_
+#include <device/pci_ops.h>
+#include <soc/pci_devs.h>
+
#define VTD_CPUBUSNO 0x108
#define VTD_CPUBUSNO_BUS0_MASK 0xff
#define VTD_CPUBUSNO_BUS0_SHIFT 0
@@ -26,4 +29,14 @@
#define VTD_DFX1 0x804
#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);
+}
+
#endif
diff --git a/src/soc/intel/fsp_broadwell_de/romstage/romstage.c b/src/soc/intel/fsp_broadwell_de/romstage/romstage.c
index 5c9682ac9e..b0fad3f02b 100644
--- a/src/soc/intel/fsp_broadwell_de/romstage/romstage.c
+++ b/src/soc/intel/fsp_broadwell_de/romstage/romstage.c
@@ -61,24 +61,18 @@ static void setup_gpio_io_address(void)
static void enable_integrated_uart(uint8_t port)
{
- uint32_t reg32, busno1 = 0, ubox_uart_en = 0, dfx1 = 0;
- pci_devfn_t vtd_dev, ubox_dev;
-
- vtd_dev = PCI_DEV(BUS0, VTD_DEV, VTD_FUNC);
-
- /* Figure out what bus number is assigned for CPUBUSNO(1) */
- reg32 = pci_mmio_read_config32(vtd_dev, VTD_CPUBUSNO);
- busno1 = (reg32 >> VTD_CPUBUSNO_BUS1_SHIFT) & VTD_CPUBUSNO_BUS1_MASK;
+ uint32_t ubox_uart_en = 0, dfx1 = 0;
+ pci_devfn_t ubox_dev;
/* UBOX sits on CPUBUSNO(1) */
- ubox_dev = PCI_DEV(busno1, UBOX_DEV, UBOX_FUNC);
+ ubox_dev = PCI_DEV(get_busno1(), UBOX_DEV, UBOX_FUNC);
uint32_t reset_sts = pci_mmio_read_config32(ubox_dev, UBOX_SC_RESET_STATUS);
/* In case we are in bypass mode do nothing */
if (reset_sts & UBOX_SC_BYPASS)
return;
- dfx1 = pci_mmio_read_config32(vtd_dev, VTD_DFX1);
+ dfx1 = pci_mmio_read_config32(VTD_PCI_DEV, VTD_DFX1);
ubox_uart_en = pci_mmio_read_config32(ubox_dev, UBOX_UART_ENABLE);
switch (port) {
@@ -96,7 +90,7 @@ static void enable_integrated_uart(uint8_t port)
}
/* Disable decoding and enable the port we want */
- pci_mmio_write_config32(vtd_dev, VTD_DFX1, dfx1);
+ pci_mmio_write_config32(VTD_PCI_DEV, VTD_DFX1, dfx1);
pci_mmio_write_config32(ubox_dev, UBOX_UART_ENABLE, ubox_uart_en);
}