x86: Add the root-complex block to common intel registers

This is similar to MCH in that it is used in various drivers. Add it to
the common header.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

arch/x86/cpu/ivybridge/bd82x6x.c

@@ -11,6 +11,7 @@
 #include <pch.h>
 #include <syscon.h>
 #include <asm/cpu.h>
+#include <asm/intel_regs.h>
 #include <asm/io.h>
 #include <asm/lapic.h>
 #include <asm/pci.h>

arch/x86/cpu/ivybridge/lpc.c

@@ -13,6 +13,7 @@
 #include <rtc.h>
 #include <pci.h>
 #include <asm/acpi.h>
+#include <asm/intel_regs.h>
 #include <asm/interrupt.h>
 #include <asm/io.h>
 #include <asm/ioapic.h>
@@ -420,7 +421,7 @@ static void enable_spi_prefetch(struct udevice *pch)
 static void enable_port80_on_lpc(struct udevice *pch)
 {
 	/* Enable port 80 POST on LPC */
-	dm_pci_write_config32(pch, PCH_RCBA_BASE, DEFAULT_RCBA | 1);
+	dm_pci_write_config32(pch, PCH_RCBA_BASE, RCB_BASE_ADDRESS | 1);
 	clrbits_le32(RCB_REG(GCS), 4);
 }
 
@@ -552,7 +553,8 @@ static int bd82x6x_lpc_early_init(struct udevice *dev)
 {
 	/* Setting up Southbridge. In the northbridge code. */
 	debug("Setting up static southbridge registers\n");
-	dm_pci_write_config32(dev->parent, PCH_RCBA_BASE, DEFAULT_RCBA | 1);
+	dm_pci_write_config32(dev->parent, PCH_RCBA_BASE,
+			      RCB_BASE_ADDRESS | 1);
 	dm_pci_write_config32(dev->parent, PMBASE, DEFAULT_PMBASE | 1);
 
 	/* Enable ACPI BAR */

arch/x86/include/asm/arch-ivybridge/pch.h

@@ -211,11 +211,6 @@
 
 #define SMBUS_TIMEOUT		(10 * 1000 * 100)
 
-
-/* Root Complex Register Block */
-#define DEFAULT_RCBA		0xfed1c000
-#define RCB_REG(reg)		(DEFAULT_RCBA + (reg))
-
 #define PCH_RCBA_BASE		0xf0
 
 #define VCH		0x0000	/* 32bit */

arch/x86/include/asm/intel_regs.h

@@ -12,4 +12,8 @@
 #define MCH_BASE_SIZE		0x8000
 #define MCHBAR_REG(reg)		(MCH_BASE_ADDRESS + (reg))
 
+/* Access the Root Complex Register Block */
+#define RCB_BASE_ADDRESS	0xfed1c000
+#define RCB_REG(reg)		(RCB_BASE_ADDRESS + (reg))
+
 #endif