[ARM] Orion: programable address map support

The Orion has fully programable address map. There's a separate address
map for each of the device _master_ interfaces, e.g. CPU, PCI, PCIE, USB,
Gigabit Ethernet, DMA/XOR engines, etc.

Signed-off-by: Tzachi Perelstein <tzachi@marvell.com>
Reviewed-by: Nicolas Pitre <nico@marvell.com>
Reviewed-by: Lennert Buytenhek <buytenh@marvell.com>

4 files changed, 564 insertions, 1 deletions

diff --git a/arch/arm/mach-orion/Makefile b/arch/arm/mach-orion/Makefile
index 2937f05b868e..1d4b5570067e 100644
--- a/arch/arm/mach-orion/Makefile
+++ b/arch/arm/mach-orion/Makefile
@@ -1 +1 @@
-obj-y  += common.o pci.o
+obj-y  += common.o addr-map.o pci.o
diff --git a/arch/arm/mach-orion/addr-map.c b/arch/arm/mach-orion/addr-map.c
new file mode 100644
index 000000000000..ff6e010bccb2
--- /dev/null
+++ b/arch/arm/mach-orion/addr-map.c
@@ -0,0 +1,482 @@
+/*
+ * arch/arm/mach-orion/addr-map.c
+ *
+ * Address map functions for Marvell Orion System On Chip
+ *
+ * Maintainer: Tzachi Perelstein <tzachi@marvell.com>
+ *
+ * This file is licensed under  the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <asm/hardware.h>
+#include "common.h"
+
+/*
+ * The Orion has fully programable address map. There's a separate address
+ * map for each of the device _master_ interfaces, e.g. CPU, PCI, PCIE, USB,
+ * Gigabit Ethernet, DMA/XOR engines, etc. Each interface has its own
+ * address decode windows that allow it to access any of the Orion resources.
+ *
+ * CPU address decoding --
+ * Linux assumes that it is the boot loader that already setup the access to
+ * DDR and internal registers.
+ * Setup access to PCI and PCI-E IO/MEM space is issued by core.c.
+ * Setup access to various devices located on the device bus interface (e.g.
+ * flashes, RTC, etc) should be issued by machine-setup.c according to
+ * specific board population (by using orion_setup_cpu_win()).
+ *
+ * Non-CPU Masters address decoding --
+ * Unlike the CPU, we setup the access from Orion's master interfaces to DDR
+ * banks only (the typical use case).
+ * Setup access for each master to DDR is issued by common.c.
+ *
+ * Note: although orion_setbits() and orion_clrbits() are not atomic
+ * no locking is necessary here since code in this file is only called
+ * at boot time when there is no concurrency issues.
+ */
+
+/*
+ * Generic Address Decode Windows bit settings
+ */
+#define TARGET_DDR		0
+#define TARGET_PCI		3
+#define TARGET_PCIE		4
+#define TARGET_DEV_BUS		1
+#define ATTR_DDR_CS(n)		(((n) ==0) ? 0xe :	\
+				((n) == 1) ? 0xd :	\
+				((n) == 2) ? 0xb :	\
+				((n) == 3) ? 0x7 : 0xf)
+#define ATTR_PCIE_MEM		0x59
+#define ATTR_PCIE_IO		0x51
+#define ATTR_PCI_MEM		0x59
+#define ATTR_PCI_IO		0x51
+#define ATTR_DEV_CS0		0x1e
+#define ATTR_DEV_CS1		0x1d
+#define ATTR_DEV_CS2		0x1b
+#define ATTR_DEV_BOOT		0xf
+#define WIN_EN			1
+
+/*
+ * Helpers to get DDR banks info
+ */
+#define DDR_BASE_CS(n)		ORION_DDR_REG(0x1500 + ((n) * 8))
+#define DDR_SIZE_CS(n)		ORION_DDR_REG(0x1504 + ((n) * 8))
+#define DDR_MAX_CS		4
+#define DDR_REG_TO_SIZE(reg)	(((reg) | 0xffffff) + 1)
+#define DDR_REG_TO_BASE(reg)	((reg) & 0xff000000)
+#define DDR_BANK_EN		1
+
+/*
+ * CPU Address Decode Windows registers
+ */
+#define CPU_WIN_CTRL(n)		ORION_BRIDGE_REG(0x000 | ((n) << 4))
+#define CPU_WIN_BASE(n)		ORION_BRIDGE_REG(0x004 | ((n) << 4))
+#define CPU_WIN_REMAP_LO(n)	ORION_BRIDGE_REG(0x008 | ((n) << 4))
+#define CPU_WIN_REMAP_HI(n)	ORION_BRIDGE_REG(0x00c | ((n) << 4))
+#define CPU_MAX_WIN		8
+
+/*
+ * Use this CPU address decode windows allocation
+ */
+#define CPU_WIN_PCIE_IO		0
+#define CPU_WIN_PCI_IO		1
+#define CPU_WIN_PCIE_MEM	2
+#define CPU_WIN_PCI_MEM		3
+#define CPU_WIN_DEV_BOOT	4
+#define CPU_WIN_DEV_CS0		5
+#define CPU_WIN_DEV_CS1		6
+#define CPU_WIN_DEV_CS2		7
+
+/*
+ * PCIE Address Decode Windows registers
+ */
+#define PCIE_BAR_CTRL(n)	ORION_PCIE_REG(0x1804 + ((n - 1) * 4))
+#define PCIE_BAR_LO(n)		ORION_PCIE_REG(0x0010 + ((n) * 8))
+#define PCIE_BAR_HI(n)		ORION_PCIE_REG(0x0014 + ((n) * 8))
+#define PCIE_WIN_CTRL(n)	ORION_PCIE_REG(0x1820 + ((n) << 4))
+#define PCIE_WIN_BASE(n)	ORION_PCIE_REG(0x1824 + ((n) << 4))
+#define PCIE_WIN_REMAP(n)	ORION_PCIE_REG(0x182c + ((n) << 4))
+#define PCIE_DEFWIN_CTRL	ORION_PCIE_REG(0x18b0)
+#define PCIE_EXPROM_WIN_CTRL	ORION_PCIE_REG(0x18c0)
+#define PCIE_EXPROM_WIN_REMP	ORION_PCIE_REG(0x18c4)
+#define PCIE_MAX_BARS		3
+#define PCIE_MAX_WINS		5
+
+/*
+ * Use PCIE BAR '1' for all DDR banks
+ */
+#define PCIE_DRAM_BAR		1
+
+/*
+ * PCI Address Decode Windows registers
+ */
+#define PCI_BAR_SIZE_DDR_CS(n)	(((n) == 0) ? ORION_PCI_REG(0xc08) : \
+				((n) == 1) ? ORION_PCI_REG(0xd08) :  \
+				((n) == 2) ? ORION_PCI_REG(0xc0c) :  \
+				((n) == 3) ? ORION_PCI_REG(0xd0c) : 0)
+#define PCI_BAR_REMAP_DDR_CS(n)	(((n) ==0) ? ORION_PCI_REG(0xc48) : \
+				((n) == 1) ? ORION_PCI_REG(0xd48) :  \
+				((n) == 2) ? ORION_PCI_REG(0xc4c) :  \
+				((n) == 3) ? ORION_PCI_REG(0xd4c) : 0)
+#define PCI_BAR_ENABLE		ORION_PCI_REG(0xc3c)
+#define PCI_CTRL_BASE_LO(n)	ORION_PCI_REG(0x1e00 | ((n) << 4))
+#define PCI_CTRL_BASE_HI(n)	ORION_PCI_REG(0x1e04 | ((n) << 4))
+#define PCI_CTRL_SIZE(n)	ORION_PCI_REG(0x1e08 | ((n) << 4))
+#define PCI_ADDR_DECODE_CTRL	ORION_PCI_REG(0xd3c)
+
+/*
+ * PCI configuration heleprs for BAR settings
+ */
+#define PCI_CONF_FUNC_BAR_CS(n)		((n) >> 1)
+#define PCI_CONF_REG_BAR_LO_CS(n)	(((n) & 1) ? 0x18 : 0x10)
+#define PCI_CONF_REG_BAR_HI_CS(n)	(((n) & 1) ? 0x1c : 0x14)
+
+/*
+ * Gigabit Ethernet Address Decode Windows registers
+ */
+#define ETH_WIN_BASE(win)	ORION_ETH_REG(0x200 + ((win) * 8))
+#define ETH_WIN_SIZE(win)	ORION_ETH_REG(0x204 + ((win) * 8))
+#define ETH_WIN_REMAP(win)	ORION_ETH_REG(0x280 + ((win) * 4))
+#define ETH_WIN_EN		ORION_ETH_REG(0x290)
+#define ETH_WIN_PROT		ORION_ETH_REG(0x294)
+#define ETH_MAX_WIN		6
+#define ETH_MAX_REMAP_WIN	4
+
+/*
+ * USB Address Decode Windows registers
+ */
+#define USB_WIN_CTRL(i, w)	((i == 0) ? ORION_USB0_REG(0x320 + ((w) << 4)) \
+					: ORION_USB1_REG(0x320 + ((w) << 4)))
+#define USB_WIN_BASE(i, w)	((i == 0) ? ORION_USB0_REG(0x324 + ((w) << 4)) \
+					: ORION_USB1_REG(0x324 + ((w) << 4)))
+#define USB_MAX_WIN		4
+
+/*
+ * SATA Address Decode Windows registers
+ */
+#define SATA_WIN_CTRL(win)	ORION_SATA_REG(0x30 + ((win) * 0x10))
+#define SATA_WIN_BASE(win)	ORION_SATA_REG(0x34 + ((win) * 0x10))
+#define SATA_MAX_WIN		4
+
+static int __init orion_cpu_win_can_remap(u32 win)
+{
+	u32 dev, rev;
+
+	orion_pcie_id(&dev, &rev);
+	if ((dev == MV88F5281_DEV_ID && win < 4) || (dev == MV88F5182_DEV_ID && win < 2))
+		return 1;
+
+	return 0;
+}
+
+void __init orion_setup_cpu_win(enum orion_target target, u32 base, u32 size, int remap)
+{
+	u32 win, attr, ctrl;
+
+	switch (target) {
+	case ORION_PCIE_IO:
+		target = TARGET_PCIE;
+		attr = ATTR_PCIE_IO;
+		win = CPU_WIN_PCIE_IO;
+		break;
+	case ORION_PCI_IO:
+		target = TARGET_PCI;
+		attr = ATTR_PCI_IO;
+		win = CPU_WIN_PCI_IO;
+		break;
+	case ORION_PCIE_MEM:
+		target = TARGET_PCIE;
+		attr = ATTR_PCIE_MEM;
+		win = CPU_WIN_PCIE_MEM;
+		break;
+	case ORION_PCI_MEM:
+		target = TARGET_PCI;
+		attr = ATTR_PCI_MEM;
+		win = CPU_WIN_PCI_MEM;
+		break;
+	case ORION_DEV_BOOT:
+		target = TARGET_DEV_BUS;
+		attr = ATTR_DEV_BOOT;
+		win = CPU_WIN_DEV_BOOT;
+		break;
+	case ORION_DEV0:
+		target = TARGET_DEV_BUS;
+		attr = ATTR_DEV_CS0;
+		win = CPU_WIN_DEV_CS0;
+		break;
+	case ORION_DEV1:
+		target = TARGET_DEV_BUS;
+		attr = ATTR_DEV_CS1;
+		win = CPU_WIN_DEV_CS1;
+		break;
+	case ORION_DEV2:
+		target = TARGET_DEV_BUS;
+		attr = ATTR_DEV_CS2;
+		win = CPU_WIN_DEV_CS2;
+		break;
+	case ORION_DDR:
+	case ORION_REGS:
+		/*
+		 * Must be mapped by bootloader.
+		 */
+	default:
+		target = attr = win = -1;
+		BUG();
+	}
+
+	base &= 0xffff0000;
+	ctrl = (((size - 1) & 0xffff0000) | (attr << 8) |
+		(target << 4) | WIN_EN);
+
+	orion_write(CPU_WIN_BASE(win), base);
+	orion_write(CPU_WIN_CTRL(win), ctrl);
+
+	if (orion_cpu_win_can_remap(win)) {
+		if (remap >= 0) {
+			orion_write(CPU_WIN_REMAP_LO(win), remap & 0xffff0000);
+			orion_write(CPU_WIN_REMAP_HI(win), 0);
+		} else {
+			orion_write(CPU_WIN_REMAP_LO(win), base);
+			orion_write(CPU_WIN_REMAP_HI(win), 0);
+		}
+	}
+}
+
+void __init orion_setup_cpu_wins(void)
+{
+	int i;
+
+	/*
+	 * First, disable and clear windows
+	 */
+	for (i = 0; i < CPU_MAX_WIN; i++) {
+		orion_write(CPU_WIN_BASE(i), 0);
+		orion_write(CPU_WIN_CTRL(i), 0);
+		if (orion_cpu_win_can_remap(i)) {
+			orion_write(CPU_WIN_REMAP_LO(i), 0);
+			orion_write(CPU_WIN_REMAP_HI(i), 0);
+		}
+	}
+
+	/*
+	 * Setup windows for PCI+PCIE IO+MAM space
+	 */
+	orion_setup_cpu_win(ORION_PCIE_IO, ORION_PCIE_IO_BASE,
+				ORION_PCIE_IO_SIZE, ORION_PCIE_IO_REMAP);
+	orion_setup_cpu_win(ORION_PCI_IO, ORION_PCI_IO_BASE,
+				ORION_PCI_IO_SIZE, ORION_PCI_IO_REMAP);
+	orion_setup_cpu_win(ORION_PCIE_MEM, ORION_PCIE_MEM_BASE,
+				ORION_PCIE_MEM_SIZE, -1);
+	orion_setup_cpu_win(ORION_PCI_MEM, ORION_PCI_MEM_BASE,
+				ORION_PCI_MEM_SIZE, -1);
+}
+
+/*
+ * Setup PCIE BARs and Address Decode Wins:
+ * BAR[0,2] -> disabled, BAR[1] -> covers all DRAM banks
+ * WIN[0-3] -> DRAM bank[0-3]
+ */
+void __init orion_setup_pcie_wins(void)
+{
+	u32 base, size, i;
+
+	/*
+	 * First, disable and clear BARs and windows
+	 */
+	for (i = 1; i < PCIE_MAX_BARS; i++) {
+		orion_write(PCIE_BAR_CTRL(i), 0);
+		orion_write(PCIE_BAR_LO(i), 0);
+		orion_write(PCIE_BAR_HI(i), 0);
+	}
+
+	for (i = 0; i < PCIE_MAX_WINS; i++) {
+		orion_write(PCIE_WIN_CTRL(i), 0);
+		orion_write(PCIE_WIN_BASE(i), 0);
+		orion_write(PCIE_WIN_REMAP(i), 0);
+	}
+
+	/*
+	 * Setup windows for DDR banks. Count total DDR size on the fly.
+	 */
+	base = DDR_REG_TO_BASE(orion_read(DDR_BASE_CS(0)));
+	size = 0;
+	for (i = 0; i < DDR_MAX_CS; i++) {
+		u32 bank_base, bank_size;
+		bank_size = orion_read(DDR_SIZE_CS(i));
+		bank_base = orion_read(DDR_BASE_CS(i));
+		if (bank_size & DDR_BANK_EN) {
+			bank_size = DDR_REG_TO_SIZE(bank_size);
+			bank_base = DDR_REG_TO_BASE(bank_base);
+			orion_write(PCIE_WIN_BASE(i), bank_base & 0xffff0000);
+			orion_write(PCIE_WIN_REMAP(i), 0);
+			orion_write(PCIE_WIN_CTRL(i),
+					((bank_size-1) & 0xffff0000) |
+					(ATTR_DDR_CS(i) << 8) |
+					(TARGET_DDR << 4) |
+					(PCIE_DRAM_BAR << 1) | WIN_EN);
+			size += bank_size;
+		}
+	}
+
+	/*
+	 * Setup BAR[1] to all DRAM banks
+	 */
+	orion_write(PCIE_BAR_LO(PCIE_DRAM_BAR), base & 0xffff0000);
+	orion_write(PCIE_BAR_HI(PCIE_DRAM_BAR), 0);
+	orion_write(PCIE_BAR_CTRL(PCIE_DRAM_BAR),
+				((size - 1) & 0xffff0000) | WIN_EN);
+}
+
+void __init orion_setup_pci_wins(void)
+{
+	u32 base, size, i;
+
+	/*
+	 * First, disable windows
+	 */
+	orion_write(PCI_BAR_ENABLE, 0xffffffff);
+
+	/*
+	 * Setup windows for DDR banks.
+	 */
+	for (i = 0; i < DDR_MAX_CS; i++) {
+		base = orion_read(DDR_BASE_CS(i));
+		size = orion_read(DDR_SIZE_CS(i));
+		if (size & DDR_BANK_EN) {
+			u32 bus, dev, func, reg, val;
+			size = DDR_REG_TO_SIZE(size);
+			base = DDR_REG_TO_BASE(base);
+			bus = orion_pci_local_bus_nr();
+			dev = orion_pci_local_dev_nr();
+			func = PCI_CONF_FUNC_BAR_CS(i);
+			reg = PCI_CONF_REG_BAR_LO_CS(i);
+			orion_pci_hw_rd_conf(bus, dev, func, reg, 4, &val);
+			orion_pci_hw_wr_conf(bus, dev, func, reg, 4,
+					(base & 0xfffff000) | (val & 0xfff));
+			reg = PCI_CONF_REG_BAR_HI_CS(i);
+			orion_pci_hw_wr_conf(bus, dev, func, reg, 4, 0);
+			orion_write(PCI_BAR_SIZE_DDR_CS(i),
+					(size - 1) & 0xfffff000);
+			orion_write(PCI_BAR_REMAP_DDR_CS(i),
+					base & 0xfffff000);
+			orion_clrbits(PCI_BAR_ENABLE, (1 << i));
+		}
+	}
+
+	/*
+	 * Disable automatic update of address remaping when writing to BARs
+	 */
+	orion_setbits(PCI_ADDR_DECODE_CTRL, 1);
+}
+
+void __init orion_setup_usb_wins(void)
+{
+	int i;
+	u32 usb_if, dev, rev;
+	u32 max_usb_if = 1;
+
+	orion_pcie_id(&dev, &rev);
+	if (dev == MV88F5182_DEV_ID)
+		max_usb_if = 2;
+
+	for (usb_if = 0; usb_if < max_usb_if; usb_if++) {
+		/*
+		 * First, disable and clear windows
+		 */
+		for (i = 0; i < USB_MAX_WIN; i++) {
+			orion_write(USB_WIN_BASE(usb_if, i), 0);
+			orion_write(USB_WIN_CTRL(usb_if, i), 0);
+		}
+
+		/*
+		 * Setup windows for DDR banks.
+		 */
+		for (i = 0; i < DDR_MAX_CS; i++) {
+			u32 base, size;
+			size = orion_read(DDR_SIZE_CS(i));
+			base = orion_read(DDR_BASE_CS(i));
+			if (size & DDR_BANK_EN) {
+				base = DDR_REG_TO_BASE(base);
+				size = DDR_REG_TO_SIZE(size);
+				orion_write(USB_WIN_CTRL(usb_if, i),
+						((size-1) & 0xffff0000) |
+						(ATTR_DDR_CS(i) << 8) |
+						(TARGET_DDR << 4) | WIN_EN);
+				orion_write(USB_WIN_BASE(usb_if, i),
+						base & 0xffff0000);
+			}
+		}
+	}
+}
+
+void __init orion_setup_eth_wins(void)
+{
+	int i;
+
+	/*
+	 * First, disable and clear windows
+	 */
+	for (i = 0; i < ETH_MAX_WIN; i++) {
+		orion_write(ETH_WIN_BASE(i), 0);
+		orion_write(ETH_WIN_SIZE(i), 0);
+		orion_setbits(ETH_WIN_EN, 1 << i);
+		orion_clrbits(ETH_WIN_PROT, 0x3 << (i * 2));
+		if (i < ETH_MAX_REMAP_WIN)
+			orion_write(ETH_WIN_REMAP(i), 0);
+	}
+
+	/*
+	 * Setup windows for DDR banks.
+	 */
+	for (i = 0; i < DDR_MAX_CS; i++) {
+		u32 base, size;
+		size = orion_read(DDR_SIZE_CS(i));
+		base = orion_read(DDR_BASE_CS(i));
+		if (size & DDR_BANK_EN) {
+			base = DDR_REG_TO_BASE(base);
+			size = DDR_REG_TO_SIZE(size);
+			orion_write(ETH_WIN_SIZE(i), (size-1) & 0xffff0000);
+			orion_write(ETH_WIN_BASE(i), (base & 0xffff0000) |
+					(ATTR_DDR_CS(i) << 8) |
+					TARGET_DDR);
+			orion_clrbits(ETH_WIN_EN, 1 << i);
+			orion_setbits(ETH_WIN_PROT, 0x3 << (i * 2));
+		}
+	}
+}
+
+void __init orion_setup_sata_wins(void)
+{
+	int i;
+
+	/*
+	 * First, disable and clear windows
+	 */
+	for (i = 0; i < SATA_MAX_WIN; i++) {
+		orion_write(SATA_WIN_BASE(i), 0);
+		orion_write(SATA_WIN_CTRL(i), 0);
+	}
+
+	/*
+	 * Setup windows for DDR banks.
+	 */
+	for (i = 0; i < DDR_MAX_CS; i++) {
+		u32 base, size;
+		size = orion_read(DDR_SIZE_CS(i));
+		base = orion_read(DDR_BASE_CS(i));
+		if (size & DDR_BANK_EN) {
+			base = DDR_REG_TO_BASE(base);
+			size = DDR_REG_TO_SIZE(size);
+			orion_write(SATA_WIN_CTRL(i),
+					((size-1) & 0xffff0000) |
+					(ATTR_DDR_CS(i) << 8) |
+					(TARGET_DDR << 4) | WIN_EN);
+			orion_write(SATA_WIN_BASE(i),
+					base & 0xffff0000);
+		}
+	}
+}
diff --git a/arch/arm/mach-orion/common.c b/arch/arm/mach-orion/common.c
index e04f3f07cac0..69363cbcb63b 100644
--- a/arch/arm/mach-orion/common.c
+++ b/arch/arm/mach-orion/common.c
@@ -13,6 +13,7 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <asm/page.h>
+#include <asm/timex.h>
 #include <asm/mach/map.h>
 #include <asm/arch/orion.h>
 #include "common.h"
@@ -51,3 +52,53 @@ void __init orion_map_io(void)
 {
 	iotable_init(orion_io_desc, ARRAY_SIZE(orion_io_desc));
 }
+
+/*****************************************************************************
+ * General
+ ****************************************************************************/
+
+/*
+ * Identify device ID and rev from PCIE configuration header space '0'.
+ */
+static void orion_id(u32 *dev, u32 *rev, char **dev_name)
+{
+	orion_pcie_id(dev, rev);
+
+	if (*dev == MV88F5281_DEV_ID) {
+		if (*rev == MV88F5281_REV_D2) {
+			*dev_name = "MV88F5281-D2";
+		} else if (*rev == MV88F5281_REV_D1) {
+			*dev_name = "MV88F5281-D1";
+		} else {
+			*dev_name = "MV88F5281-Rev-Unsupported";
+		}
+	} else if (*dev == MV88F5182_DEV_ID) {
+		if (*rev == MV88F5182_REV_A2) {
+			*dev_name = "MV88F5182-A2";
+		} else {
+			*dev_name = "MV88F5182-Rev-Unsupported";
+		}
+	} else {
+		*dev_name = "Device-Unknown";
+	}
+}
+
+void __init orion_init(void)
+{
+	char *dev_name;
+	u32 dev, rev;
+
+	orion_id(&dev, &rev, &dev_name);
+	printk(KERN_INFO "Orion ID: %s. TCLK=%d.\n", dev_name, ORION_TCLK);
+
+	/*
+	 * Setup Orion address map
+	 */
+	orion_setup_cpu_wins();
+	orion_setup_usb_wins();
+	orion_setup_eth_wins();
+	orion_setup_pci_wins();
+	orion_setup_pcie_wins();
+	if (dev == MV88F5182_DEV_ID)
+		orion_setup_sata_wins();
+}
diff --git a/arch/arm/mach-orion/common.h b/arch/arm/mach-orion/common.h
index 02d0fec44a40..056043464ca1 100644
--- a/arch/arm/mach-orion/common.h
+++ b/arch/arm/mach-orion/common.h
@@ -4,7 +4,37 @@
 /*
  * Basic Orion init functions used early by machine-setup.
  */
+
 void __init orion_map_io(void);
+void __init orion_init(void);
+
+/*
+ * Enumerations and functions for Orion windows mapping. Used by Orion core
+ * functions to map its interfaces and by the machine-setup to map its on-
+ * board devices. Details in /mach-orion/addr-map.c
+ */
+
+enum orion_target {
+	ORION_DEV_BOOT = 0,
+	ORION_DEV0,
+	ORION_DEV1,
+	ORION_DEV2,
+	ORION_PCIE_MEM,
+	ORION_PCIE_IO,
+	ORION_PCI_MEM,
+	ORION_PCI_IO,
+	ORION_DDR,
+	ORION_REGS,
+	ORION_MAX_TARGETS
+};
+
+void orion_setup_cpu_win(enum orion_target target, u32 base, u32 size, int remap);
+void orion_setup_cpu_wins(void);
+void orion_setup_eth_wins(void);
+void orion_setup_usb_wins(void);
+void orion_setup_pci_wins(void);
+void orion_setup_pcie_wins(void);
+void orion_setup_sata_wins(void);
 
 /*
  * Shared code used internally by other Orion core functions.