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soc/fsp_broadwell_de: Move function to get CPUBUSNO(1) into common file 

Change-Id: I189eb8ffce2f0735ad9ba603b1d96786aa00fafb
Signed-off-by: Andrey Petrov <anpetrov@fb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35320
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: David Hendricks <david.hendricks@gmail.com>
This commit is contained in:
Andrey Petrov 2019-09-10 20:24:06 -07:00 committed by Martin Roth
parent b18946a557
commit 3dd6867ea9
3 changed files with 19 additions and 11 deletions
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1
src/soc/intel/fsp_broadwell_de/include/soc/pci_devs.h
View File

@ -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

13
src/soc/intel/fsp_broadwell_de/include/soc/vtd.h
View File

@ -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

16
src/soc/intel/fsp_broadwell_de/romstage/romstage.c
View File

@ -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);
}