mb/emulation/qemu-q35: Consolidate host bridge definitions

Move all Q35 register definitions into the q35.h header. Note that real
hardware does not have EXT_TSEG_MBYTES, because it is QEMU-specific.

Change-Id: I4c86ac0bb05563dee111b9b4a4a71c1c31198acd
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50024
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

6 files changed, 39 insertions, 28 deletions

diff --git a/src/mainboard/emulation/qemu-q35/acpi_tables.c b/src/mainboard/emulation/qemu-q35/acpi_tables.c
index 08ddf57223..03d357cbfc 100644
--- a/src/mainboard/emulation/qemu-q35/acpi_tables.c
+++ b/src/mainboard/emulation/qemu-q35/acpi_tables.c
@@ -10,6 +10,7 @@
 
 #include "../qemu-i440fx/fw_cfg.h"
 #include "../qemu-i440fx/acpi.h"
+#include "q35.h"
 
 void mainboard_fill_fadt(acpi_fadt_t *fadt)
 {
@@ -46,7 +47,7 @@ unsigned long acpi_fill_mcfg(unsigned long current)
 	if (!dev)
 		return current;
 
-	reg = pci_read_config32(dev, 0x60);
+	reg = pci_read_config32(dev, D0F0_PCIEXBAR_LO);
 	if ((reg & 0x07) != 0x01)  /* require enabled + 256MB size */
 		return current;
 
diff --git a/src/mainboard/emulation/qemu-q35/bootblock.c b/src/mainboard/emulation/qemu-q35/bootblock.c
index 5cf2eb7bee..73036805c5 100644
--- a/src/mainboard/emulation/qemu-q35/bootblock.c
+++ b/src/mainboard/emulation/qemu-q35/bootblock.c
@@ -25,13 +25,13 @@ static void bootblock_northbridge_init(void)
 	 * 4GiB.
 	 */
 	reg = 0;
-	pci_io_write_config32(PCI_DEV(0,0,0), D0F0_PCIEXBAR_HI, reg);
+	pci_io_write_config32(HOST_BRIDGE, D0F0_PCIEXBAR_HI, reg);
 	reg = CONFIG_MMCONF_BASE_ADDRESS | 1; /* 256MiB - 0-255 buses. */
-	pci_io_write_config32(PCI_DEV(0,0,0), D0F0_PCIEXBAR_LO, reg);
+	pci_io_write_config32(HOST_BRIDGE, D0F0_PCIEXBAR_LO, reg);
 
 	/* MCFG is now active. If it's not qemu was started for machine PC */
 	if (CONFIG(BOOTBLOCK_CONSOLE) &&
-	    (pci_read_config32(PCI_DEV(0, 0, 0), D0F0_PCIEXBAR_LO) !=
+	    (pci_read_config32(HOST_BRIDGE, D0F0_PCIEXBAR_LO) !=
 	     (CONFIG_MMCONF_BASE_ADDRESS | 1)))
 		die("You must run qemu for machine Q35 (-M q35)");
 }
diff --git a/src/mainboard/emulation/qemu-q35/mainboard.c b/src/mainboard/emulation/qemu-q35/mainboard.c
index c88874f4f2..0911671e5c 100644
--- a/src/mainboard/emulation/qemu-q35/mainboard.c
+++ b/src/mainboard/emulation/qemu-q35/mainboard.c
@@ -5,7 +5,7 @@
 #include <device/pci_ops.h>
 #include <pc80/keyboard.h>
 
-#define Q35_PAM0            0x90
+#include "q35.h"
 
 static const unsigned char qemu_q35_irqs[] = {
 	10, 10, 11, 11,
@@ -16,15 +16,15 @@ static void qemu_nb_init(struct device *dev)
 {
 	/* Map memory at 0xc0000 - 0xfffff */
 	int i;
-	uint8_t v = pci_read_config8(dev, Q35_PAM0);
+	uint8_t v = pci_read_config8(dev, D0F0_PAM(0));
 	v |= 0x30;
-	pci_write_config8(dev, Q35_PAM0, v);
-	pci_write_config8(dev, Q35_PAM0 + 1, 0x33);
-	pci_write_config8(dev, Q35_PAM0 + 2, 0x33);
-	pci_write_config8(dev, Q35_PAM0 + 3, 0x33);
-	pci_write_config8(dev, Q35_PAM0 + 4, 0x33);
-	pci_write_config8(dev, Q35_PAM0 + 5, 0x33);
-	pci_write_config8(dev, Q35_PAM0 + 6, 0x33);
+	pci_write_config8(dev, D0F0_PAM(0), v);
+	pci_write_config8(dev, D0F0_PAM(1), 0x33);
+	pci_write_config8(dev, D0F0_PAM(2), 0x33);
+	pci_write_config8(dev, D0F0_PAM(3), 0x33);
+	pci_write_config8(dev, D0F0_PAM(4), 0x33);
+	pci_write_config8(dev, D0F0_PAM(5), 0x33);
+	pci_write_config8(dev, D0F0_PAM(6), 0x33);
 
 	/* This sneaked in here, because Qemu does not emulate a SuperIO chip. */
 	pc_keyboard_init(NO_AUX_DEVICE);
diff --git a/src/mainboard/emulation/qemu-q35/memmap.c b/src/mainboard/emulation/qemu-q35/memmap.c
index a8b1433714..10b35d7fe2 100644
--- a/src/mainboard/emulation/qemu-q35/memmap.c
+++ b/src/mainboard/emulation/qemu-q35/memmap.c
@@ -8,21 +8,14 @@
 #include <mainboard/emulation/qemu-i440fx/memory.h>
 #include <mainboard/emulation/qemu-i440fx/fw_cfg.h>
 
-#define EXT_TSEG_MBYTES	0x50
+#include "q35.h"
 
-#define SMRAMC	0x9d
-#define G_SMRAME	(1 << 3)
-#define D_LCK		(1 << 4)
-#define D_CLS		(1 << 5)
-#define D_OPEN		(1 << 6)
-#define ESMRAMC	0x9e
-#define T_EN		(1 << 0)
-#define TSEG_SZ_MASK	(3 << 1)
-#define H_SMRAME	(1 << 7)
+/* QEMU-specific register */
+#define EXT_TSEG_MBYTES	0x50
 
 void smm_region(uintptr_t *start, size_t *size)
 {
-	uint8_t esmramc = pci_read_config8(PCI_DEV(0, 0, 0), ESMRAMC);
+	uint8_t esmramc = pci_read_config8(HOST_BRIDGE, ESMRAMC);
 
 	switch ((esmramc & TSEG_SZ_MASK) >> 1) {
 	case 0:
@@ -35,7 +28,7 @@ void smm_region(uintptr_t *start, size_t *size)
 		*size = 8 * MiB;
 		break;
 	default:
-		*size = pci_read_config16(PCI_DEV(0, 0, 0), EXT_TSEG_MBYTES) * MiB;
+		*size = pci_read_config16(HOST_BRIDGE, EXT_TSEG_MBYTES) * MiB;
 	}
 
 	*start = qemu_get_memory_size() * KiB - *size;
diff --git a/src/mainboard/emulation/qemu-q35/q35.h b/src/mainboard/emulation/qemu-q35/q35.h
index f2a49a62f5..dcdd1727a0 100644
--- a/src/mainboard/emulation/qemu-q35/q35.h
+++ b/src/mainboard/emulation/qemu-q35/q35.h
@@ -3,7 +3,24 @@
 #ifndef __MAINBOARD_EMU_Q35_H__
 #define __MAINBOARD_EMU_Q35_H__
 
-#define D0F0_PCIEXBAR_LO 0x60
-#define D0F0_PCIEXBAR_HI 0x64
+#include <device/pci_type.h>
+
+#define HOST_BRIDGE	PCI_DEV(0, 0, 0)
+
+#define D0F0_PCIEXBAR_LO	0x60
+#define D0F0_PCIEXBAR_HI	0x64
+
+#define D0F0_PAM(x)		(0x90 + (x)) /* 0-6 */
+
+#define SMRAMC			0x9d
+#define  G_SMRAME		(1 << 3)
+#define  D_LCK			(1 << 4)
+#define  D_CLS			(1 << 5)
+#define  D_OPEN			(1 << 6)
+
+#define ESMRAMC			0x9e
+#define  T_EN			(1 << 0)
+#define  TSEG_SZ_MASK		(3 << 1)
+#define  H_SMRAME		(1 << 7)
 
 #endif
diff --git a/src/mainboard/emulation/qemu-q35/romstage.c b/src/mainboard/emulation/qemu-q35/romstage.c
index 465edc84c4..e9637e858e 100644
--- a/src/mainboard/emulation/qemu-q35/romstage.c
+++ b/src/mainboard/emulation/qemu-q35/romstage.c
@@ -12,7 +12,7 @@ static void mainboard_machine_check(void)
 {
 	/* Check that MCFG is active. If it's not qemu was started for machine PC */
 	if (!CONFIG(BOOTBLOCK_CONSOLE) &&
-	    (pci_read_config32(PCI_DEV(0, 0, 0), D0F0_PCIEXBAR_LO) !=
+	    (pci_read_config32(HOST_BRIDGE, D0F0_PCIEXBAR_LO) !=
 	     (CONFIG_MMCONF_BASE_ADDRESS | 1)))
 		die("You must run qemu for machine Q35 (-M q35)");
 }