sb/intel/i82801gx: Add a function to set up BAR

This removes some of the sb code in the nb.

Change-Id: I2ab894be93f210220fa55ddd10cd48889f308e5b
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36753
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: HAOUAS Elyes <ehaouas@noos.fr>

src/northbridge/intel/i945/early_init.c

@@ -159,11 +159,8 @@ static void i945_setup_bars(void)
 	/* Setting up Southbridge. In the northbridge code. */
 	printk(BIOS_DEBUG, "Setting up static southbridge registers...");
 
-	pci_write_config32(PCI_DEV(0, 0x1f, 0), PMBASE, DEFAULT_PMBASE | 1);
+	i82801gx_setup_bars();
-	pci_write_config8(PCI_DEV(0, 0x1f, 0), ACPI_CNTL, ACPI_EN);
 
-	pci_write_config32(PCI_DEV(0, 0x1f, 0), GPIOBASE, DEFAULT_GPIOBASE | 1);
-	pci_write_config8(PCI_DEV(0, 0x1f, 0), GPIO_CNTL, GPIO_EN);
 	setup_pch_gpios(&mainboard_gpio_map);
 	printk(BIOS_DEBUG, " done.\n");
 

src/northbridge/intel/pineview/early_init.c

@@ -158,12 +158,8 @@ static void pineview_setup_bars(void)
 {
 	/* Setting up Southbridge. In the northbridge code. */
 	printk(BIOS_DEBUG, "Setting up static southbridge registers...");
-	pci_write_config32(LPC, RCBA, (uintptr_t)DEFAULT_RCBA | 1);
+
-	pci_write_config32(LPC, PMBASE, DEFAULT_PMBASE | 1);
+	i82801gx_setup_bars();
-	pci_write_config8(LPC, 0x44 /* ACPI_CNTL */, 0x80); /* Enable ACPI */
-	pci_write_config32(LPC, GPIOBASE, DEFAULT_GPIOBASE | 1);
-	pci_write_config8(LPC, 0x4c /* GC */, 0x10);	/* Enable GPIOs */
-	pci_write_config32(LPC, 0x88, 0x007c0291);
 
 	pci_write_config32(PCI_DEV(0, 0x1e, 0), 0x1b, 0x20);
 	printk(BIOS_DEBUG, " done.\n");

src/southbridge/intel/i82801gx/bootblock_gcc.c

@@ -32,9 +32,7 @@ void bootblock_early_southbridge_init(void)
 {
 	enable_spi_prefetch();
 
-	/* Enable RCBA */
+	i82801gx_setup_bars();
-	pci_devfn_t lpc_dev = PCI_DEV(0, 0x1f, 0);
-	pci_write_config32(lpc_dev, RCBA, (uintptr_t)DEFAULT_RCBA | 1);
 
 	/* Enable upper 128bytes of CMOS */
 	RCBA32(0x3400) = (1 << 2);

src/southbridge/intel/i82801gx/early_init.c

@@ -11,6 +11,7 @@
  * GNU General Public License for more details.
  */
 
+#include <stdint.h>
 #include <device/pci_ops.h>
 #include "i82801gx.h"
 #include "chip.h"
@@ -50,3 +51,14 @@ void i82801gx_lpc_setup(void)
 	pci_write_config32(d31f0, GEN3_DEC, config->gen3_dec);
 	pci_write_config32(d31f0, GEN4_DEC, config->gen4_dec);
 }
+
+void i82801gx_setup_bars(void)
+{
+	const pci_devfn_t d31f0 = PCI_DEV(0, 0x1f, 0);
+	pci_write_config32(d31f0, RCBA, (uint32_t)DEFAULT_RCBA | 1);
+	pci_write_config32(d31f0, PMBASE, DEFAULT_PMBASE | 1);
+	pci_write_config8(d31f0, ACPI_CNTL, ACPI_EN);
+
+	pci_write_config32(d31f0, GPIOBASE, DEFAULT_GPIOBASE | 1);
+	pci_write_config8(d31f0, GPIO_CNTL, GPIO_EN);
+}

src/southbridge/intel/i82801gx/i82801gx.h

@@ -41,6 +41,7 @@ void i82801gx_enable(struct device *dev);
 
 void enable_smbus(void);
 void i82801gx_lpc_setup(void);
+void i82801gx_setup_bars(void);
 
 #if ENV_ROMSTAGE
 int smbus_read_byte(unsigned int device, unsigned int address);