dm: x86: minnowmax: Move PCI to use driver model

Adjust minnowmax to use driver model for PCI. This requires adding a device
tree node to specify the ranges, removing the board-specific PCI code and
ensuring that the host bridge is configured.

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

arch/x86/cpu/baytrail/Makefile

@@ -7,5 +7,4 @@
 obj-y += cpu.o
 obj-y += early_uart.o
 obj-y += fsp_configs.o
-obj-y += pci.o
 obj-y += valleyview.o

arch/x86/cpu/baytrail/pci.c

@@ -1,46 +0,0 @@
-/*
- * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <pci.h>
-#include <asm/pci.h>
-#include <asm/fsp/fsp_support.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-void board_pci_setup_hose(struct pci_controller *hose)
-{
-	hose->first_busno = 0;
-	hose->last_busno = 0;
-
-	/* PCI memory space */
-	pci_set_region(hose->regions + 0,
-		       CONFIG_PCI_MEM_BUS,
-		       CONFIG_PCI_MEM_PHYS,
-		       CONFIG_PCI_MEM_SIZE,
-		       PCI_REGION_MEM);
-
-	/* PCI IO space */
-	pci_set_region(hose->regions + 1,
-		       CONFIG_PCI_IO_BUS,
-		       CONFIG_PCI_IO_PHYS,
-		       CONFIG_PCI_IO_SIZE,
-		       PCI_REGION_IO);
-
-	pci_set_region(hose->regions + 2,
-		       CONFIG_PCI_PREF_BUS,
-		       CONFIG_PCI_PREF_PHYS,
-		       CONFIG_PCI_PREF_SIZE,
-		       PCI_REGION_PREFETCH);
-
-	pci_set_region(hose->regions + 3,
-		       0,
-		       0,
-		       gd->ram_size < 0x80000000 ? gd->ram_size : 0x80000000,
-		       PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
-
-	hose->region_count = 4;
-}

arch/x86/dts/minnowmax.dts

@@ -111,6 +111,16 @@
 
 	};
 
+	pci {
+		compatible = "intel,pci-baytrail", "pci-x86";
+		#address-cells = <3>;
+		#size-cells = <2>;
+		u-boot,dm-pre-reloc;
+		ranges = <0x02000000 0x0 0xd0000000 0xd0000000 0 0x10000000
+			0x42000000 0x0 0xc0000000 0xc0000000 0 0x10000000
+			0x01000000 0x0 0x2000 0x2000 0 0xe000>;
+	};
+
 	spi {
 		#address-cells = <1>;
 		#size-cells = <0>;

configs/minnowmax_defconfig

@@ -22,3 +22,4 @@ CONFIG_FRAMEBUFFER_SET_VESA_MODE=y
 CONFIG_FRAMEBUFFER_VESA_MODE_11A=y
 CONFIG_USE_PRIVATE_LIBGCC=y
 CONFIG_SYS_VSNPRINTF=y
+CONFIG_DM_PCI=y

include/configs/minnowmax.h

@@ -32,6 +32,7 @@
 #define CONFIG_PCI_IO_PHYS		CONFIG_PCI_IO_BUS
 #define CONFIG_PCI_IO_SIZE		0xe000
 
+#define CONFIG_PCI_CONFIG_HOST_BRIDGE
 #define CONFIG_SYS_EARLY_PCI_INIT
 #define CONFIG_PCI_PNP
 #define CONFIG_RTL8169