[POWERPC] Add bootwrapper support for Marvell/mv64x60 hostbridge

The mv64x60 host bridge has many windows between its various components
(cpu, system memory, ethernet ctlr, MPSC, DMA ctlr, PCI MEM, PCI I/O).
Unfortunately, the firmware on some of mv64x60-based platforms do not
properly or completely configure those windows (e.g., MPSC->system memory
windows not configured or CPU->PCI MEM space not configured).

So, the missing configuration needs to be done in either the bootwrapper
or in the kernel.  To keep the kernel as clean as possible, it is done
in the bootwrapper.  Note that I/O controller configuration is NOT being
done, its only the windows to allow the I/O controllers and other components
to access memory, etc. that is being done--drivers assume that their
controllers can already access system memory).

Table of routines and the windows they configure:
	mv64x60_config_ctlr_windows()	ENET->System Memory
					MPSC->System Memory
					IDMA->System Memory

	mv64x60_config_pci_windows()	PCI MEM->System Memory
					PCI I/O->Bridge's Registers

	mv64x60_config_cpu2pci_window()	CPU->PCI MEM
					CPU->PCI I/O
Signed-off-by: NMark A. Greer <mgreer@mvista.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>

arch/powerpc/boot/Makefile

@@ -43,7 +43,7 @@ $(addprefix $(obj)/,$(zlib) gunzip_util.o main.o): \
 src-wlib := string.S crt0.S stdio.c main.c flatdevtree.c flatdevtree_misc.c \
 		ns16550.c serial.c simple_alloc.c div64.S util.S \
 		gunzip_util.c elf_util.c $(zlib) devtree.c \
-		44x.c ebony.c
+		44x.c ebony.c mv64x60.c
 src-plat := of.c cuboot-83xx.c cuboot-85xx.c holly.c \
 		cuboot-ebony.c treeboot-ebony.c
 src-boot := $(src-wlib) $(src-plat) empty.c

arch/powerpc/boot/mv64x60.c

+/*
+ * Marvell hostbridge routines
+ *
+ * Author: Mark A. Greer <source@mvista.com>
+ *
+ * 2004, 2005, 2007 (c) MontaVista Software, Inc. 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 <stdarg.h>
+#include <stddef.h>
+#include "types.h"
+#include "elf.h"
+#include "page.h"
+#include "string.h"
+#include "stdio.h"
+#include "io.h"
+#include "ops.h"
+#include "mv64x60.h"
+
+#define PCI_DEVFN(slot,func)	((((slot) & 0x1f) << 3) | ((func) & 0x07))
+
+#define MV64x60_CPU2MEM_WINDOWS			4
+#define MV64x60_CPU2MEM_0_BASE			0x0008
+#define MV64x60_CPU2MEM_0_SIZE			0x0010
+#define MV64x60_CPU2MEM_1_BASE			0x0208
+#define MV64x60_CPU2MEM_1_SIZE			0x0210
+#define MV64x60_CPU2MEM_2_BASE			0x0018
+#define MV64x60_CPU2MEM_2_SIZE			0x0020
+#define MV64x60_CPU2MEM_3_BASE			0x0218
+#define MV64x60_CPU2MEM_3_SIZE			0x0220
+
+#define MV64x60_ENET2MEM_BAR_ENABLE		0x2290
+#define MV64x60_ENET2MEM_0_BASE			0x2200
+#define MV64x60_ENET2MEM_0_SIZE			0x2204
+#define MV64x60_ENET2MEM_1_BASE			0x2208
+#define MV64x60_ENET2MEM_1_SIZE			0x220c
+#define MV64x60_ENET2MEM_2_BASE			0x2210
+#define MV64x60_ENET2MEM_2_SIZE			0x2214
+#define MV64x60_ENET2MEM_3_BASE			0x2218
+#define MV64x60_ENET2MEM_3_SIZE			0x221c
+#define MV64x60_ENET2MEM_4_BASE			0x2220
+#define MV64x60_ENET2MEM_4_SIZE			0x2224
+#define MV64x60_ENET2MEM_5_BASE			0x2228
+#define MV64x60_ENET2MEM_5_SIZE			0x222c
+#define MV64x60_ENET2MEM_ACC_PROT_0		0x2294
+#define MV64x60_ENET2MEM_ACC_PROT_1		0x2298
+#define MV64x60_ENET2MEM_ACC_PROT_2		0x229c
+
+#define MV64x60_MPSC2MEM_BAR_ENABLE		0xf250
+#define MV64x60_MPSC2MEM_0_BASE			0xf200
+#define MV64x60_MPSC2MEM_0_SIZE			0xf204
+#define MV64x60_MPSC2MEM_1_BASE			0xf208
+#define MV64x60_MPSC2MEM_1_SIZE			0xf20c
+#define MV64x60_MPSC2MEM_2_BASE			0xf210
+#define MV64x60_MPSC2MEM_2_SIZE			0xf214
+#define MV64x60_MPSC2MEM_3_BASE			0xf218
+#define MV64x60_MPSC2MEM_3_SIZE			0xf21c
+#define MV64x60_MPSC_0_REMAP			0xf240
+#define MV64x60_MPSC_1_REMAP			0xf244
+#define MV64x60_MPSC2MEM_ACC_PROT_0		0xf254
+#define MV64x60_MPSC2MEM_ACC_PROT_1		0xf258
+#define MV64x60_MPSC2REGS_BASE			0xf25c
+
+#define MV64x60_IDMA2MEM_BAR_ENABLE		0x0a80
+#define MV64x60_IDMA2MEM_0_BASE			0x0a00
+#define MV64x60_IDMA2MEM_0_SIZE			0x0a04
+#define MV64x60_IDMA2MEM_1_BASE			0x0a08
+#define MV64x60_IDMA2MEM_1_SIZE			0x0a0c
+#define MV64x60_IDMA2MEM_2_BASE			0x0a10
+#define MV64x60_IDMA2MEM_2_SIZE			0x0a14
+#define MV64x60_IDMA2MEM_3_BASE			0x0a18
+#define MV64x60_IDMA2MEM_3_SIZE			0x0a1c
+#define MV64x60_IDMA2MEM_4_BASE			0x0a20
+#define MV64x60_IDMA2MEM_4_SIZE			0x0a24
+#define MV64x60_IDMA2MEM_5_BASE			0x0a28
+#define MV64x60_IDMA2MEM_5_SIZE			0x0a2c
+#define MV64x60_IDMA2MEM_6_BASE			0x0a30
+#define MV64x60_IDMA2MEM_6_SIZE			0x0a34
+#define MV64x60_IDMA2MEM_7_BASE			0x0a38
+#define MV64x60_IDMA2MEM_7_SIZE			0x0a3c
+#define MV64x60_IDMA2MEM_ACC_PROT_0		0x0a70
+#define MV64x60_IDMA2MEM_ACC_PROT_1		0x0a74
+#define MV64x60_IDMA2MEM_ACC_PROT_2		0x0a78
+#define MV64x60_IDMA2MEM_ACC_PROT_3		0x0a7c
+
+#define MV64x60_PCI_ACC_CNTL_WINDOWS		6
+#define MV64x60_PCI0_PCI_DECODE_CNTL		0x0d3c
+#define MV64x60_PCI1_PCI_DECODE_CNTL		0x0dbc
+
+#define MV64x60_PCI0_BAR_ENABLE			0x0c3c
+#define MV64x60_PCI02MEM_0_SIZE			0x0c08
+#define MV64x60_PCI0_ACC_CNTL_0_BASE_LO		0x1e00
+#define MV64x60_PCI0_ACC_CNTL_0_BASE_HI		0x1e04
+#define MV64x60_PCI0_ACC_CNTL_0_SIZE		0x1e08
+#define MV64x60_PCI0_ACC_CNTL_1_BASE_LO		0x1e10
+#define MV64x60_PCI0_ACC_CNTL_1_BASE_HI		0x1e14
+#define MV64x60_PCI0_ACC_CNTL_1_SIZE		0x1e18
+#define MV64x60_PCI0_ACC_CNTL_2_BASE_LO		0x1e20
+#define MV64x60_PCI0_ACC_CNTL_2_BASE_HI		0x1e24
+#define MV64x60_PCI0_ACC_CNTL_2_SIZE		0x1e28
+#define MV64x60_PCI0_ACC_CNTL_3_BASE_LO		0x1e30
+#define MV64x60_PCI0_ACC_CNTL_3_BASE_HI		0x1e34
+#define MV64x60_PCI0_ACC_CNTL_3_SIZE		0x1e38
+#define MV64x60_PCI0_ACC_CNTL_4_BASE_LO		0x1e40
+#define MV64x60_PCI0_ACC_CNTL_4_BASE_HI		0x1e44
+#define MV64x60_PCI0_ACC_CNTL_4_SIZE		0x1e48
+#define MV64x60_PCI0_ACC_CNTL_5_BASE_LO		0x1e50
+#define MV64x60_PCI0_ACC_CNTL_5_BASE_HI		0x1e54
+#define MV64x60_PCI0_ACC_CNTL_5_SIZE		0x1e58
+
+#define MV64x60_PCI1_BAR_ENABLE			0x0cbc
+#define MV64x60_PCI12MEM_0_SIZE			0x0c88
+#define MV64x60_PCI1_ACC_CNTL_0_BASE_LO		0x1e80
+#define MV64x60_PCI1_ACC_CNTL_0_BASE_HI		0x1e84
+#define MV64x60_PCI1_ACC_CNTL_0_SIZE		0x1e88
+#define MV64x60_PCI1_ACC_CNTL_1_BASE_LO		0x1e90
+#define MV64x60_PCI1_ACC_CNTL_1_BASE_HI		0x1e94
+#define MV64x60_PCI1_ACC_CNTL_1_SIZE		0x1e98
+#define MV64x60_PCI1_ACC_CNTL_2_BASE_LO		0x1ea0
+#define MV64x60_PCI1_ACC_CNTL_2_BASE_HI		0x1ea4
+#define MV64x60_PCI1_ACC_CNTL_2_SIZE		0x1ea8
+#define MV64x60_PCI1_ACC_CNTL_3_BASE_LO		0x1eb0
+#define MV64x60_PCI1_ACC_CNTL_3_BASE_HI		0x1eb4
+#define MV64x60_PCI1_ACC_CNTL_3_SIZE		0x1eb8
+#define MV64x60_PCI1_ACC_CNTL_4_BASE_LO		0x1ec0
+#define MV64x60_PCI1_ACC_CNTL_4_BASE_HI		0x1ec4
+#define MV64x60_PCI1_ACC_CNTL_4_SIZE		0x1ec8
+#define MV64x60_PCI1_ACC_CNTL_5_BASE_LO		0x1ed0
+#define MV64x60_PCI1_ACC_CNTL_5_BASE_HI		0x1ed4
+#define MV64x60_PCI1_ACC_CNTL_5_SIZE		0x1ed8
+
+#define MV64x60_CPU2PCI_SWAP_NONE		0x01000000
+
+#define MV64x60_CPU2PCI0_IO_BASE		0x0048
+#define MV64x60_CPU2PCI0_IO_SIZE		0x0050
+#define MV64x60_CPU2PCI0_IO_REMAP		0x00f0
+#define MV64x60_CPU2PCI0_MEM_0_BASE		0x0058
+#define MV64x60_CPU2PCI0_MEM_0_SIZE		0x0060
+#define MV64x60_CPU2PCI0_MEM_0_REMAP_LO		0x00f8
+#define MV64x60_CPU2PCI0_MEM_0_REMAP_HI		0x0320
+
+#define MV64x60_CPU2PCI1_IO_BASE		0x0090
+#define MV64x60_CPU2PCI1_IO_SIZE		0x0098
+#define MV64x60_CPU2PCI1_IO_REMAP		0x0108
+#define MV64x60_CPU2PCI1_MEM_0_BASE		0x00a0
+#define MV64x60_CPU2PCI1_MEM_0_SIZE		0x00a8
+#define MV64x60_CPU2PCI1_MEM_0_REMAP_LO		0x0110
+#define MV64x60_CPU2PCI1_MEM_0_REMAP_HI		0x0340
+
+struct mv64x60_mem_win {
+	u32 hi;
+	u32 lo;
+	u32 size;
+};
+
+struct mv64x60_pci_win {
+	u32 fcn;
+	u32 hi;
+	u32 lo;
+	u32 size;
+};
+
+/* PCI config access routines */
+struct {
+	u32 addr;
+	u32 data;
+} static mv64x60_pci_cfgio[2] = {
+	{ /* hose 0 */
+		.addr	= 0xcf8,
+		.data	= 0xcfc,
+	},
+	{ /* hose 1 */
+		.addr	= 0xc78,
+		.data	= 0xc7c,
+	}
+};
+
+u32 mv64x60_cfg_read(u8 *bridge_base, u8 hose, u8 bus, u8 devfn, u8 offset)
+{
+	out_le32((u32 *)(bridge_base + mv64x60_pci_cfgio[hose].addr),
+			(1 << 31) | (bus << 16) | (devfn << 8) | offset);
+	return in_le32((u32 *)(bridge_base + mv64x60_pci_cfgio[hose].data));
+}
+
+void mv64x60_cfg_write(u8 *bridge_base, u8 hose, u8 bus, u8 devfn, u8 offset,
+		u32 val)
+{
+	out_le32((u32 *)(bridge_base + mv64x60_pci_cfgio[hose].addr),
+			(1 << 31) | (bus << 16) | (devfn << 8) | offset);
+	out_le32((u32 *)(bridge_base + mv64x60_pci_cfgio[hose].data), val);
+}
+
+/* I/O ctlr -> system memory setup */
+static struct mv64x60_mem_win mv64x60_cpu2mem[MV64x60_CPU2MEM_WINDOWS] = {
+	{
+		.lo	= MV64x60_CPU2MEM_0_BASE,
+		.size	= MV64x60_CPU2MEM_0_SIZE,
+	},
+	{
+		.lo	= MV64x60_CPU2MEM_1_BASE,
+		.size	= MV64x60_CPU2MEM_1_SIZE,
+	},
+	{
+		.lo	= MV64x60_CPU2MEM_2_BASE,
+		.size	= MV64x60_CPU2MEM_2_SIZE,
+	},
+	{
+		.lo	= MV64x60_CPU2MEM_3_BASE,
+		.size	= MV64x60_CPU2MEM_3_SIZE,
+	},
+};
+
+static struct mv64x60_mem_win mv64x60_enet2mem[MV64x60_CPU2MEM_WINDOWS] = {
+	{
+		.lo	= MV64x60_ENET2MEM_0_BASE,
+		.size	= MV64x60_ENET2MEM_0_SIZE,
+	},
+	{
+		.lo	= MV64x60_ENET2MEM_1_BASE,
+		.size	= MV64x60_ENET2MEM_1_SIZE,
+	},
+	{
+		.lo	= MV64x60_ENET2MEM_2_BASE,
+		.size	= MV64x60_ENET2MEM_2_SIZE,
+	},
+	{
+		.lo	= MV64x60_ENET2MEM_3_BASE,
+		.size	= MV64x60_ENET2MEM_3_SIZE,
+	},
+};
+
+static struct mv64x60_mem_win mv64x60_mpsc2mem[MV64x60_CPU2MEM_WINDOWS] = {
+	{
+		.lo	= MV64x60_MPSC2MEM_0_BASE,
+		.size	= MV64x60_MPSC2MEM_0_SIZE,
+	},
+	{
+		.lo	= MV64x60_MPSC2MEM_1_BASE,
+		.size	= MV64x60_MPSC2MEM_1_SIZE,
+	},
+	{
+		.lo	= MV64x60_MPSC2MEM_2_BASE,
+		.size	= MV64x60_MPSC2MEM_2_SIZE,
+	},
+	{
+		.lo	= MV64x60_MPSC2MEM_3_BASE,
+		.size	= MV64x60_MPSC2MEM_3_SIZE,
+	},
+};
+
+static struct mv64x60_mem_win mv64x60_idma2mem[MV64x60_CPU2MEM_WINDOWS] = {
+	{
+		.lo	= MV64x60_IDMA2MEM_0_BASE,
+		.size	= MV64x60_IDMA2MEM_0_SIZE,
+	},
+	{
+		.lo	= MV64x60_IDMA2MEM_1_BASE,
+		.size	= MV64x60_IDMA2MEM_1_SIZE,
+	},
+	{
+		.lo	= MV64x60_IDMA2MEM_2_BASE,
+		.size	= MV64x60_IDMA2MEM_2_SIZE,
+	},
+	{
+		.lo	= MV64x60_IDMA2MEM_3_BASE,
+		.size	= MV64x60_IDMA2MEM_3_SIZE,
+	},
+};
+
+static u32 mv64x60_dram_selects[MV64x60_CPU2MEM_WINDOWS] = {0xe,0xd,0xb,0x7};
+
+/*
+ * ENET, MPSC, and IDMA ctlrs on the MV64x60 have separate windows that
+ * must be set up so that the respective ctlr can access system memory.
+ * Configure them to be same as cpu->memory windows.
+ */
+void mv64x60_config_ctlr_windows(u8 *bridge_base, u8 *bridge_pbase,
+		u8 is_coherent)
+{
+	u32 i, base, size, enables, prot = 0, snoop_bits = 0;
+
+	/* Disable ctlr->mem windows */
+	out_le32((u32 *)(bridge_base + MV64x60_ENET2MEM_BAR_ENABLE), 0x3f);
+	out_le32((u32 *)(bridge_base + MV64x60_MPSC2MEM_BAR_ENABLE), 0xf);
+	out_le32((u32 *)(bridge_base + MV64x60_ENET2MEM_BAR_ENABLE), 0xff);
+
+	if (is_coherent)
+		snoop_bits = 0x2 << 12; /* Writeback */
+
+	enables = in_le32((u32 *)(bridge_base + MV64x60_CPU_BAR_ENABLE)) & 0xf;
+
+	for (i=0; i<MV64x60_CPU2MEM_WINDOWS; i++) {
+		if (enables & (1 << i)) /* Set means disabled */
+			continue;
+
+		base = in_le32((u32 *)(bridge_base + mv64x60_cpu2mem[i].lo))
+			<< 16;
+		base |= snoop_bits | (mv64x60_dram_selects[i] << 8);
+		size = in_le32((u32 *)(bridge_base + mv64x60_cpu2mem[i].size))
+			<< 16;
+		prot |= (0x3 << (i << 1)); /* RW access */
+
+		out_le32((u32 *)(bridge_base + mv64x60_enet2mem[i].lo), base);
+		out_le32((u32 *)(bridge_base + mv64x60_enet2mem[i].size), size);
+		out_le32((u32 *)(bridge_base + mv64x60_mpsc2mem[i].lo), base);
+		out_le32((u32 *)(bridge_base + mv64x60_mpsc2mem[i].size), size);
+		out_le32((u32 *)(bridge_base + mv64x60_idma2mem[i].lo), base);
+		out_le32((u32 *)(bridge_base + mv64x60_idma2mem[i].size), size);
+	}
+
+	out_le32((u32 *)(bridge_base + MV64x60_ENET2MEM_ACC_PROT_0), prot);
+	out_le32((u32 *)(bridge_base + MV64x60_ENET2MEM_ACC_PROT_1), prot);
+	out_le32((u32 *)(bridge_base + MV64x60_ENET2MEM_ACC_PROT_2), prot);
+	out_le32((u32 *)(bridge_base + MV64x60_MPSC2MEM_ACC_PROT_0), prot);
+	out_le32((u32 *)(bridge_base + MV64x60_MPSC2MEM_ACC_PROT_1), prot);
+	out_le32((u32 *)(bridge_base + MV64x60_IDMA2MEM_ACC_PROT_0), prot);
+	out_le32((u32 *)(bridge_base + MV64x60_IDMA2MEM_ACC_PROT_1), prot);
+	out_le32((u32 *)(bridge_base + MV64x60_IDMA2MEM_ACC_PROT_2), prot);
+	out_le32((u32 *)(bridge_base + MV64x60_IDMA2MEM_ACC_PROT_3), prot);
+
+	/* Set mpsc->bridge's reg window to the bridge's internal registers. */
+	out_le32((u32 *)(bridge_base + MV64x60_MPSC2REGS_BASE),
+			(u32)bridge_pbase);
+
+	out_le32((u32 *)(bridge_base + MV64x60_ENET2MEM_BAR_ENABLE), enables);
+	out_le32((u32 *)(bridge_base + MV64x60_MPSC2MEM_BAR_ENABLE), enables);
+	out_le32((u32 *)(bridge_base + MV64x60_IDMA2MEM_BAR_ENABLE), enables);
+}
+
+/* PCI MEM -> system memory, et. al. setup */
+static struct mv64x60_pci_win mv64x60_pci2mem[2] = {
+	{ /* hose 0 */
+		.fcn	= 0,
+		.hi	= 0x14,
+		.lo	= 0x10,
+		.size	= MV64x60_PCI02MEM_0_SIZE,
+	},
+	{ /* hose 1 */
+		.fcn	= 0,
+		.hi	= 0x94,
+		.lo	= 0x90,
+		.size	= MV64x60_PCI12MEM_0_SIZE,
+	},
+};
+
+static struct
+mv64x60_mem_win mv64x60_pci_acc[2][MV64x60_PCI_ACC_CNTL_WINDOWS] = {
+	{ /* hose 0 */
+		{
+			.hi	= MV64x60_PCI0_ACC_CNTL_0_BASE_HI,
+			.lo	= MV64x60_PCI0_ACC_CNTL_0_BASE_LO,
+			.size	= MV64x60_PCI0_ACC_CNTL_0_SIZE,
+		},
+		{
+			.hi	= MV64x60_PCI0_ACC_CNTL_1_BASE_HI,
+			.lo	= MV64x60_PCI0_ACC_CNTL_1_BASE_LO,
+			.size	= MV64x60_PCI0_ACC_CNTL_1_SIZE,
+		},
+		{
+			.hi	= MV64x60_PCI0_ACC_CNTL_2_BASE_HI,
+			.lo	= MV64x60_PCI0_ACC_CNTL_2_BASE_LO,
+			.size	= MV64x60_PCI0_ACC_CNTL_2_SIZE,
+		},
+		{
+			.hi	= MV64x60_PCI0_ACC_CNTL_3_BASE_HI,
+			.lo	= MV64x60_PCI0_ACC_CNTL_3_BASE_LO,
+			.size	= MV64x60_PCI0_ACC_CNTL_3_SIZE,
+		},
+	},
+	{ /* hose 1 */
+		{
+			.hi	= MV64x60_PCI1_ACC_CNTL_0_BASE_HI,
+			.lo	= MV64x60_PCI1_ACC_CNTL_0_BASE_LO,
+			.size	= MV64x60_PCI1_ACC_CNTL_0_SIZE,
+		},
+		{
+			.hi	= MV64x60_PCI1_ACC_CNTL_1_BASE_HI,
+			.lo	= MV64x60_PCI1_ACC_CNTL_1_BASE_LO,
+			.size	= MV64x60_PCI1_ACC_CNTL_1_SIZE,
+		},
+		{
+			.hi	= MV64x60_PCI1_ACC_CNTL_2_BASE_HI,
+			.lo	= MV64x60_PCI1_ACC_CNTL_2_BASE_LO,
+			.size	= MV64x60_PCI1_ACC_CNTL_2_SIZE,
+		},
+		{
+			.hi	= MV64x60_PCI1_ACC_CNTL_3_BASE_HI,
+			.lo	= MV64x60_PCI1_ACC_CNTL_3_BASE_LO,
+			.size	= MV64x60_PCI1_ACC_CNTL_3_SIZE,
+		},
+	},
+};
+
+static struct mv64x60_mem_win mv64x60_pci2reg[2] = {
+	{
+		.hi	= 0x24,
+		.lo	= 0x20,
+		.size	= 0,
+	},
+	{
+		.hi	= 0xa4,
+		.lo	= 0xa0,
+		.size	= 0,
+	},
+};
+
+/* Only need to use 1 window (per hose) to get access to all of system memory */
+void mv64x60_config_pci_windows(u8 *bridge_base, u8 *bridge_pbase, u8 hose,
+		u8 bus, u32 mem_size, u32 acc_bits)
+{
+	u32 i, offset, bar_enable, enables;
+
+	/* Disable all windows but PCI MEM -> Bridge's regs window */
+	enables = ~(1 << 9);
+	bar_enable = hose ? MV64x60_PCI1_BAR_ENABLE : MV64x60_PCI0_BAR_ENABLE;
+	out_le32((u32 *)(bridge_base + bar_enable), enables);
+
+	for (i=0; i<MV64x60_PCI_ACC_CNTL_WINDOWS; i++)
+		out_le32((u32 *)(bridge_base + mv64x60_pci_acc[hose][i].lo), 0);
+
+	/* If mem_size is 0, leave windows disabled */
+	if (mem_size == 0)
+		return;
+
+	/* Cause automatic updates of PCI remap regs */
+	offset = hose ?
+		MV64x60_PCI1_PCI_DECODE_CNTL : MV64x60_PCI0_PCI_DECODE_CNTL;
+	i = in_le32((u32 *)(bridge_base + offset));
+	out_le32((u32 *)(bridge_base + offset), i & ~0x1);
+
+	mem_size = (mem_size - 1) & 0xfffff000;
+
+	/* Map PCI MEM addr 0 -> System Mem addr 0 */
+	mv64x60_cfg_write(bridge_base, hose, bus,
+			PCI_DEVFN(0, mv64x60_pci2mem[hose].fcn),
+			mv64x60_pci2mem[hose].hi, 0);
+	mv64x60_cfg_write(bridge_base, hose, bus,
+			PCI_DEVFN(0, mv64x60_pci2mem[hose].fcn),
+			mv64x60_pci2mem[hose].lo, 0);
+	out_le32((u32 *)(bridge_base + mv64x60_pci2mem[hose].size),mem_size);
+
+	acc_bits |= MV64x60_PCI_ACC_CNTL_ENABLE;
+	out_le32((u32 *)(bridge_base + mv64x60_pci_acc[hose][0].hi), 0);
+	out_le32((u32 *)(bridge_base + mv64x60_pci_acc[hose][0].lo), acc_bits);
+	out_le32((u32 *)(bridge_base + mv64x60_pci_acc[hose][0].size),mem_size);
+
+	/* Set PCI MEM->bridge's reg window to where they are in CPU mem map */
+	i = (u32)bridge_base;
+	i &= 0xffff0000;
+	i |= (0x2 << 1);
+	mv64x60_cfg_write(bridge_base, hose, bus, PCI_DEVFN(0,0),
+			mv64x60_pci2reg[hose].hi, 0);
+	mv64x60_cfg_write(bridge_base, hose, bus, PCI_DEVFN(0,0),
+			mv64x60_pci2reg[hose].lo, i);
+
+	enables &= ~0x1; /* Enable PCI MEM -> System Mem window 0 */
+	out_le32((u32 *)(bridge_base + bar_enable), enables);
+}
+
+/* CPU -> PCI I/O & MEM setup */
+struct mv64x60_cpu2pci_win mv64x60_cpu2pci_io[2] = {
+	{ /* hose 0 */
+		.lo		= MV64x60_CPU2PCI0_IO_BASE,
+		.size		= MV64x60_CPU2PCI0_IO_SIZE,
+		.remap_hi	= 0,
+		.remap_lo	= MV64x60_CPU2PCI0_IO_REMAP,
+	},
+	{ /* hose 1 */
+		.lo		= MV64x60_CPU2PCI1_IO_BASE,
+		.size		= MV64x60_CPU2PCI1_IO_SIZE,
+		.remap_hi	= 0,
+		.remap_lo	= MV64x60_CPU2PCI1_IO_REMAP,
+	},
+};
+
+struct mv64x60_cpu2pci_win mv64x60_cpu2pci_mem[2] = {
+	{ /* hose 0 */
+		.lo		= MV64x60_CPU2PCI0_MEM_0_BASE,
+		.size		= MV64x60_CPU2PCI0_MEM_0_SIZE,
+		.remap_hi	= MV64x60_CPU2PCI0_MEM_0_REMAP_HI,
+		.remap_lo	= MV64x60_CPU2PCI0_MEM_0_REMAP_LO,
+	},
+	{ /* hose 1 */
+		.lo		= MV64x60_CPU2PCI1_MEM_0_BASE,
+		.size		= MV64x60_CPU2PCI1_MEM_0_SIZE,
+		.remap_hi	= MV64x60_CPU2PCI1_MEM_0_REMAP_HI,
+		.remap_lo	= MV64x60_CPU2PCI1_MEM_0_REMAP_LO,
+	},
+};
+
+/* Only need to set up 1 window to pci mem space */
+void mv64x60_config_cpu2pci_window(u8 *bridge_base, u8 hose, u32 pci_base_hi,
+		u32 pci_base_lo, u32 cpu_base, u32 size,
+		struct mv64x60_cpu2pci_win *offset_tbl)
+{
+	cpu_base >>= 16;
+	cpu_base |= MV64x60_CPU2PCI_SWAP_NONE;
+	out_le32((u32 *)(bridge_base + offset_tbl[hose].lo), cpu_base);
+
+	if (offset_tbl[hose].remap_hi != 0)
+		out_le32((u32 *)(bridge_base + offset_tbl[hose].remap_hi),
+				pci_base_hi);
+	out_le32((u32 *)(bridge_base + offset_tbl[hose].remap_lo),
+			pci_base_lo >> 16);
+
+	size = (size - 1) >> 16;
+	out_le32((u32 *)(bridge_base + offset_tbl[hose].size), size);
+}
+
+/* Read mem ctlr to get the amount of mem in system */
+u32 mv64x60_get_mem_size(u8 *bridge_base)
+{
+	u32 enables, i, v;
+	u32 mem = 0;
+
+	enables = in_le32((u32 *)(bridge_base + MV64x60_CPU_BAR_ENABLE)) & 0xf;
+
+	for (i=0; i<MV64x60_CPU2MEM_WINDOWS; i++)
+		if (!(enables & (1<<i))) {
+			v = in_le32((u32*)(bridge_base
+						+ mv64x60_cpu2mem[i].size));
+			v = ((v & 0xffff) + 1) << 16;
+			mem += v;
+		}
+
+	return mem;
+}
+
+/* Get physical address of bridge's registers */
+u8 *mv64x60_get_bridge_pbase(void)
+{
+	u32 v[2];
+	void *devp;
+
+	devp = finddevice("/mv64x60");
+	if (devp == NULL)
+		goto err_out;
+	if (getprop(devp, "reg", v, sizeof(v)) != sizeof(v))
+		goto err_out;
+
+	return (u8 *)v[0];
+
+err_out:
+	return 0;
+}
+
+/* Get virtual address of bridge's registers */
+u8 *mv64x60_get_bridge_base(void)
+{
+	u32 v;
+	void *devp;
+
+	devp = finddevice("/mv64x60");
+	if (devp == NULL)
+		goto err_out;
+	if (getprop(devp, "virtual-reg", &v, sizeof(v)) != sizeof(v))
+		goto err_out;
+
+	return (u8 *)v;
+
+err_out:
+	return 0;
+}
+
+u8 mv64x60_is_coherent(void)
+{
+	u32 v;
+	void *devp;
+
+	devp = finddevice("/");
+	if (devp == NULL)
+		return 1; /* Assume coherency on */
+
+	if (getprop(devp, "coherency-off", &v, sizeof(v)) < 0)
+		return 1; /* Coherency on */
+	else
+		return 0;
+}

arch/powerpc/boot/mv64x60.h

+/*
+ * Author: Mark A. Greer <source@mvista.com>
+ *
+ * 2007 (c) MontaVista Software, Inc. 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.
+ */
+
+#ifndef _PPC_BOOT_MV64x60_H_
+#define _PPC_BOOT_MV64x60_H_
+
+#define MV64x60_CPU_BAR_ENABLE			0x0278
+
+#define MV64x60_PCI_ACC_CNTL_ENABLE		(1<<0)
+#define MV64x60_PCI_ACC_CNTL_REQ64		(1<<1)
+#define MV64x60_PCI_ACC_CNTL_SNOOP_NONE		0x00000000
+#define MV64x60_PCI_ACC_CNTL_SNOOP_WT		0x00000004
+#define MV64x60_PCI_ACC_CNTL_SNOOP_WB		0x00000008
+#define MV64x60_PCI_ACC_CNTL_SNOOP_MASK		0x0000000c
+#define MV64x60_PCI_ACC_CNTL_ACCPROT		(1<<4)
+#define MV64x60_PCI_ACC_CNTL_WRPROT		(1<<5)
+#define MV64x60_PCI_ACC_CNTL_SWAP_BYTE		0x00000000
+#define MV64x60_PCI_ACC_CNTL_SWAP_NONE		0x00000040
+#define MV64x60_PCI_ACC_CNTL_SWAP_BYTE_WORD	0x00000080
+#define MV64x60_PCI_ACC_CNTL_SWAP_WORD		0x000000c0
+#define MV64x60_PCI_ACC_CNTL_SWAP_MASK		0x000000c0
+#define MV64x60_PCI_ACC_CNTL_MBURST_32_BYTES	0x00000000
+#define MV64x60_PCI_ACC_CNTL_MBURST_64_BYTES	0x00000100
+#define MV64x60_PCI_ACC_CNTL_MBURST_128_BYTES	0x00000200
+#define MV64x60_PCI_ACC_CNTL_MBURST_MASK	0x00000300
+#define MV64x60_PCI_ACC_CNTL_RDSIZE_32_BYTES	0x00000000
+#define MV64x60_PCI_ACC_CNTL_RDSIZE_64_BYTES	0x00000400
+#define MV64x60_PCI_ACC_CNTL_RDSIZE_128_BYTES	0x00000800
+#define MV64x60_PCI_ACC_CNTL_RDSIZE_256_BYTES	0x00000c00
+#define MV64x60_PCI_ACC_CNTL_RDSIZE_MASK	0x00000c00
+
+struct mv64x60_cpu2pci_win {
+	u32 lo;
+	u32 size;
+	u32 remap_hi;
+	u32 remap_lo;
+};
+
+extern struct mv64x60_cpu2pci_win mv64x60_cpu2pci_io[2];
+extern struct mv64x60_cpu2pci_win mv64x60_cpu2pci_mem[2];
+
+u32 mv64x60_cfg_read(u8 *bridge_base, u8 hose, u8 bus, u8 devfn,
+		u8 offset);
+void mv64x60_cfg_write(u8 *bridge_base, u8 hose, u8 bus, u8 devfn,
+		u8 offset, u32 val);
+
+void mv64x60_config_ctlr_windows(u8 *bridge_base, u8 *bridge_pbase,
+		u8 is_coherent);
+void mv64x60_config_pci_windows(u8 *bridge_base, u8 *bridge_pbase, u8 hose,
+		u8 bus, u32 mem_size, u32 acc_bits);
+void mv64x60_config_cpu2pci_window(u8 *bridge_base, u8 hose, u32 pci_base_hi,
+		u32 pci_base_lo, u32 cpu_base, u32 size,
+		struct mv64x60_cpu2pci_win *offset_tbl);
+u32 mv64x60_get_mem_size(u8 *bridge_base);
+u8 *mv64x60_get_bridge_pbase(void);
+u8 *mv64x60_get_bridge_base(void);
+u8 mv64x60_is_coherent(void);
+
+int mv64x60_i2c_open(void);
+int mv64x60_i2c_read(u32 devaddr, u8 *buf, u32 offset, u32 offset_size,
+		u32 count);
+void mv64x60_i2c_close(void);
+
+#endif /* _PPC_BOOT_MV64x60_H_ */