572 lines
		
	
	
		
			14 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			572 lines
		
	
	
		
			14 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/*
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 * Motorola ECC prpmc280/f101 & prpmc2800/f101e platform code.
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 *
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 * Author: Mark A. Greer <mgreer@mvista.com>
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 *
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 * 2007 (c) MontaVista, Software, Inc.  This file is licensed under
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 * the terms of the GNU General Public License version 2.  This program
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 * is licensed "as is" without any warranty of any kind, whether express
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 * or implied.
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 */
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#include <stdarg.h>
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#include <stddef.h>
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#include "types.h"
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#include "elf.h"
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#include "page.h"
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#include "string.h"
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#include "stdio.h"
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#include "io.h"
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#include "ops.h"
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#include "gunzip_util.h"
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#include "mv64x60.h"
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#define KB	1024U
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#define MB	(KB*KB)
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#define GB	(KB*MB)
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#define MHz	(1000U*1000U)
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#define GHz	(1000U*MHz)
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#define BOARD_MODEL	"PrPMC2800"
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#define BOARD_MODEL_MAX	32 /* max strlen(BOARD_MODEL) + 1 */
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#define EEPROM2_ADDR	0xa4
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#define EEPROM3_ADDR	0xa8
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BSS_STACK(16*KB);
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static u8 *bridge_base;
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typedef enum {
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	BOARD_MODEL_PRPMC280,
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	BOARD_MODEL_PRPMC2800,
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} prpmc2800_board_model;
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typedef enum {
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	BRIDGE_TYPE_MV64360,
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	BRIDGE_TYPE_MV64362,
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} prpmc2800_bridge_type;
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struct prpmc2800_board_info {
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	prpmc2800_board_model model;
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	char variant;
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	prpmc2800_bridge_type bridge_type;
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	u8 subsys0;
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	u8 subsys1;
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	u8 vpd4;
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	u8 vpd4_mask;
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	u32 core_speed;
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	u32 mem_size;
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	u32 boot_flash;
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	u32 user_flash;
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};
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static struct prpmc2800_board_info prpmc2800_board_info[] = {
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	{
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		.model		= BOARD_MODEL_PRPMC280,
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		.variant	= 'a',
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		.bridge_type	= BRIDGE_TYPE_MV64360,
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		.subsys0	= 0xff,
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		.subsys1	= 0xff,
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		.vpd4		= 0x00,
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		.vpd4_mask	= 0x0f,
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		.core_speed	= 1*GHz,
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		.mem_size	= 512*MB,
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		.boot_flash	= 1*MB,
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		.user_flash	= 64*MB,
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	},
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	{
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		.model		= BOARD_MODEL_PRPMC280,
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		.variant	= 'b',
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		.bridge_type	= BRIDGE_TYPE_MV64362,
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		.subsys0	= 0xff,
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		.subsys1	= 0xff,
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		.vpd4		= 0x01,
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		.vpd4_mask	= 0x0f,
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		.core_speed	= 1*GHz,
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		.mem_size	= 512*MB,
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		.boot_flash	= 0,
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		.user_flash	= 0,
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	},
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	{
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		.model		= BOARD_MODEL_PRPMC280,
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		.variant	= 'c',
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		.bridge_type	= BRIDGE_TYPE_MV64360,
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		.subsys0	= 0xff,
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		.subsys1	= 0xff,
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		.vpd4		= 0x02,
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		.vpd4_mask	= 0x0f,
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		.core_speed	= 733*MHz,
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		.mem_size	= 512*MB,
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		.boot_flash	= 1*MB,
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		.user_flash	= 64*MB,
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	},
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	{
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		.model		= BOARD_MODEL_PRPMC280,
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		.variant	= 'd',
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		.bridge_type	= BRIDGE_TYPE_MV64360,
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		.subsys0	= 0xff,
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		.subsys1	= 0xff,
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		.vpd4		= 0x03,
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		.vpd4_mask	= 0x0f,
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		.core_speed	= 1*GHz,
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		.mem_size	= 1*GB,
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		.boot_flash	= 1*MB,
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		.user_flash	= 64*MB,
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	},
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	{
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		.model		= BOARD_MODEL_PRPMC280,
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		.variant	= 'e',
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		.bridge_type	= BRIDGE_TYPE_MV64360,
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		.subsys0	= 0xff,
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		.subsys1	= 0xff,
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		.vpd4		= 0x04,
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		.vpd4_mask	= 0x0f,
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		.core_speed	= 1*GHz,
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		.mem_size	= 512*MB,
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		.boot_flash	= 1*MB,
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		.user_flash	= 64*MB,
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	},
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	{
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		.model		= BOARD_MODEL_PRPMC280,
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		.variant	= 'f',
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		.bridge_type	= BRIDGE_TYPE_MV64362,
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		.subsys0	= 0xff,
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		.subsys1	= 0xff,
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		.vpd4		= 0x05,
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		.vpd4_mask	= 0x0f,
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		.core_speed	= 733*MHz,
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		.mem_size	= 128*MB,
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		.boot_flash	= 1*MB,
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		.user_flash	= 0,
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	},
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	{
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		.model		= BOARD_MODEL_PRPMC280,
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		.variant	= 'g',
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		.bridge_type	= BRIDGE_TYPE_MV64360,
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		.subsys0	= 0xff,
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		.subsys1	= 0xff,
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		.vpd4		= 0x06,
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		.vpd4_mask	= 0x0f,
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		.core_speed	= 1*GHz,
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		.mem_size	= 256*MB,
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		.boot_flash	= 1*MB,
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		.user_flash	= 0,
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	},
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	{
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		.model		= BOARD_MODEL_PRPMC280,
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		.variant	= 'h',
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		.bridge_type	= BRIDGE_TYPE_MV64360,
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		.subsys0	= 0xff,
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		.subsys1	= 0xff,
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		.vpd4		= 0x07,
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		.vpd4_mask	= 0x0f,
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		.core_speed	= 1*GHz,
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		.mem_size	= 1*GB,
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		.boot_flash	= 1*MB,
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		.user_flash	= 64*MB,
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	},
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	{
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		.model		= BOARD_MODEL_PRPMC2800,
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		.variant	= 'a',
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		.bridge_type	= BRIDGE_TYPE_MV64360,
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		.subsys0	= 0xb2,
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		.subsys1	= 0x8c,
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		.vpd4		= 0x00,
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		.vpd4_mask	= 0x00,
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		.core_speed	= 1*GHz,
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		.mem_size	= 512*MB,
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		.boot_flash	= 2*MB,
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		.user_flash	= 64*MB,
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	},
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	{
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		.model		= BOARD_MODEL_PRPMC2800,
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		.variant	= 'b',
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		.bridge_type	= BRIDGE_TYPE_MV64362,
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		.subsys0	= 0xb2,
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		.subsys1	= 0x8d,
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		.vpd4		= 0x00,
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		.vpd4_mask	= 0x00,
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		.core_speed	= 1*GHz,
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		.mem_size	= 512*MB,
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		.boot_flash	= 0,
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		.user_flash	= 0,
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	},
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	{
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		.model		= BOARD_MODEL_PRPMC2800,
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		.variant	= 'c',
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		.bridge_type	= BRIDGE_TYPE_MV64360,
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		.subsys0	= 0xb2,
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		.subsys1	= 0x8e,
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		.vpd4		= 0x00,
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		.vpd4_mask	= 0x00,
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		.core_speed	= 733*MHz,
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		.mem_size	= 512*MB,
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		.boot_flash	= 2*MB,
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		.user_flash	= 64*MB,
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	},
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	{
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		.model		= BOARD_MODEL_PRPMC2800,
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		.variant	= 'd',
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		.bridge_type	= BRIDGE_TYPE_MV64360,
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		.subsys0	= 0xb2,
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		.subsys1	= 0x8f,
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		.vpd4		= 0x00,
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		.vpd4_mask	= 0x00,
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		.core_speed	= 1*GHz,
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		.mem_size	= 1*GB,
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		.boot_flash	= 2*MB,
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		.user_flash	= 64*MB,
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	},
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	{
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		.model		= BOARD_MODEL_PRPMC2800,
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		.variant	= 'e',
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		.bridge_type	= BRIDGE_TYPE_MV64360,
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		.subsys0	= 0xa2,
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		.subsys1	= 0x8a,
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		.vpd4		= 0x00,
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		.vpd4_mask	= 0x00,
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		.core_speed	= 1*GHz,
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		.mem_size	= 512*MB,
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		.boot_flash	= 2*MB,
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		.user_flash	= 64*MB,
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	},
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	{
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		.model		= BOARD_MODEL_PRPMC2800,
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		.variant	= 'f',
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		.bridge_type	= BRIDGE_TYPE_MV64362,
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		.subsys0	= 0xa2,
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		.subsys1	= 0x8b,
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		.vpd4		= 0x00,
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		.vpd4_mask	= 0x00,
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		.core_speed	= 733*MHz,
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		.mem_size	= 128*MB,
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		.boot_flash	= 2*MB,
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		.user_flash	= 0,
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	},
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	{
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		.model		= BOARD_MODEL_PRPMC2800,
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		.variant	= 'g',
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		.bridge_type	= BRIDGE_TYPE_MV64360,
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		.subsys0	= 0xa2,
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		.subsys1	= 0x8c,
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		.vpd4		= 0x00,
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		.vpd4_mask	= 0x00,
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		.core_speed	= 1*GHz,
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		.mem_size	= 2*GB,
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		.boot_flash	= 2*MB,
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		.user_flash	= 64*MB,
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	},
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	{
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		.model		= BOARD_MODEL_PRPMC2800,
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		.variant	= 'h',
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		.bridge_type	= BRIDGE_TYPE_MV64360,
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		.subsys0	= 0xa2,
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		.subsys1	= 0x8d,
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		.vpd4		= 0x00,
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		.vpd4_mask	= 0x00,
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		.core_speed	= 733*MHz,
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		.mem_size	= 1*GB,
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		.boot_flash	= 2*MB,
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		.user_flash	= 64*MB,
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	},
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};
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static struct prpmc2800_board_info *prpmc2800_get_board_info(u8 *vpd)
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{
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	struct prpmc2800_board_info *bip;
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	int i;
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	for (i=0,bip=prpmc2800_board_info; i<ARRAY_SIZE(prpmc2800_board_info);
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			i++,bip++)
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		if ((vpd[0] == bip->subsys0) && (vpd[1] == bip->subsys1)
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				&& ((vpd[4] & bip->vpd4_mask) == bip->vpd4))
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			return bip;
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	return NULL;
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}
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/* Get VPD from i2c eeprom 2, then match it to a board info entry */
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static struct prpmc2800_board_info *prpmc2800_get_bip(void)
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{
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	struct prpmc2800_board_info *bip;
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	u8 vpd[5];
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	int rc;
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	if (mv64x60_i2c_open())
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		fatal("Error: Can't open i2c device\n\r");
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	/* Get VPD from i2c eeprom-2 */
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	memset(vpd, 0, sizeof(vpd));
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	rc = mv64x60_i2c_read(EEPROM2_ADDR, vpd, 0x1fde, 2, sizeof(vpd));
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	if (rc < 0)
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		fatal("Error: Couldn't read eeprom2\n\r");
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	mv64x60_i2c_close();
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	/* Get board type & related info */
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	bip = prpmc2800_get_board_info(vpd);
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	if (bip == NULL) {
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		printf("Error: Unsupported board or corrupted VPD:\n\r");
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		printf("  0x%x 0x%x 0x%x 0x%x 0x%x\n\r",
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				vpd[0], vpd[1], vpd[2], vpd[3], vpd[4]);
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		printf("Using device tree defaults...\n\r");
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	}
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	return bip;
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}
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static void prpmc2800_bridge_setup(u32 mem_size)
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{
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	u32 i, v[12], enables, acc_bits;
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	u32 pci_base_hi, pci_base_lo, size, buf[2];
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	unsigned long cpu_base;
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	int rc;
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	void *devp;
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	u8 *bridge_pbase, is_coherent;
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	struct mv64x60_cpu2pci_win *tbl;
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	bridge_pbase = mv64x60_get_bridge_pbase();
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	is_coherent = mv64x60_is_coherent();
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	if (is_coherent)
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		acc_bits = MV64x60_PCI_ACC_CNTL_SNOOP_WB
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			| MV64x60_PCI_ACC_CNTL_SWAP_NONE
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			| MV64x60_PCI_ACC_CNTL_MBURST_32_BYTES
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			| MV64x60_PCI_ACC_CNTL_RDSIZE_32_BYTES;
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	else
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		acc_bits = MV64x60_PCI_ACC_CNTL_SNOOP_NONE
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			| MV64x60_PCI_ACC_CNTL_SWAP_NONE
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			| MV64x60_PCI_ACC_CNTL_MBURST_128_BYTES
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			| MV64x60_PCI_ACC_CNTL_RDSIZE_256_BYTES;
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	mv64x60_config_ctlr_windows(bridge_base, bridge_pbase, is_coherent);
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	mv64x60_config_pci_windows(bridge_base, bridge_pbase, 0, 0, mem_size,
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			acc_bits);
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	/* Get the cpu -> pci i/o & mem mappings from the device tree */
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	devp = find_node_by_compatible(NULL, "marvell,mv64360-pci");
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	if (devp == NULL)
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		fatal("Error: Missing marvell,mv64360-pci"
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				" device tree node\n\r");
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	rc = getprop(devp, "ranges", v, sizeof(v));
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	if (rc != sizeof(v))
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		fatal("Error: Can't find marvell,mv64360-pci ranges"
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				" property\n\r");
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	/* Get the cpu -> pci i/o & mem mappings from the device tree */
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	devp = find_node_by_compatible(NULL, "marvell,mv64360");
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	if (devp == NULL)
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		fatal("Error: Missing marvell,mv64360 device tree node\n\r");
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	enables = in_le32((u32 *)(bridge_base + MV64x60_CPU_BAR_ENABLE));
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	enables |= 0x0007fe00; /* Disable all cpu->pci windows */
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	out_le32((u32 *)(bridge_base + MV64x60_CPU_BAR_ENABLE), enables);
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	for (i=0; i<12; i+=6) {
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		switch (v[i] & 0xff000000) {
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		case 0x01000000: /* PCI I/O Space */
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			tbl = mv64x60_cpu2pci_io;
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			break;
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		case 0x02000000: /* PCI MEM Space */
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			tbl = mv64x60_cpu2pci_mem;
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			break;
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		default:
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			continue;
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		}
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		pci_base_hi = v[i+1];
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		pci_base_lo = v[i+2];
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		cpu_base = v[i+3];
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		size = v[i+5];
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		buf[0] = cpu_base;
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		buf[1] = size;
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		if (!dt_xlate_addr(devp, buf, sizeof(buf), &cpu_base))
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			fatal("Error: Can't translate PCI address 0x%x\n\r",
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					(u32)cpu_base);
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		mv64x60_config_cpu2pci_window(bridge_base, 0, pci_base_hi,
 | 
						|
				pci_base_lo, cpu_base, size, tbl);
 | 
						|
	}
 | 
						|
 | 
						|
	enables &= ~0x00000600; /* Enable cpu->pci0 i/o, cpu->pci0 mem0 */
 | 
						|
	out_le32((u32 *)(bridge_base + MV64x60_CPU_BAR_ENABLE), enables);
 | 
						|
}
 | 
						|
 | 
						|
static void prpmc2800_fixups(void)
 | 
						|
{
 | 
						|
	u32 v[2], l, mem_size;
 | 
						|
	int rc;
 | 
						|
	void *devp;
 | 
						|
	char model[BOARD_MODEL_MAX];
 | 
						|
	struct prpmc2800_board_info *bip;
 | 
						|
 | 
						|
	bip = prpmc2800_get_bip(); /* Get board info based on VPD */
 | 
						|
 | 
						|
	mem_size = (bip) ? bip->mem_size : mv64x60_get_mem_size(bridge_base);
 | 
						|
	prpmc2800_bridge_setup(mem_size); /* Do necessary bridge setup */
 | 
						|
 | 
						|
	/* If the VPD doesn't match what we know about, just use the
 | 
						|
	 * defaults already in the device tree.
 | 
						|
	 */
 | 
						|
	if (!bip)
 | 
						|
		return;
 | 
						|
 | 
						|
	/* Know the board type so override device tree defaults */
 | 
						|
	/* Set /model appropriately */
 | 
						|
	devp = finddevice("/");
 | 
						|
	if (devp == NULL)
 | 
						|
		fatal("Error: Missing '/' device tree node\n\r");
 | 
						|
	memset(model, 0, BOARD_MODEL_MAX);
 | 
						|
	strncpy(model, BOARD_MODEL, BOARD_MODEL_MAX - 2);
 | 
						|
	l = strlen(model);
 | 
						|
	if (bip->model == BOARD_MODEL_PRPMC280)
 | 
						|
		l--;
 | 
						|
	model[l++] = bip->variant;
 | 
						|
	model[l++] = '\0';
 | 
						|
	setprop(devp, "model", model, l);
 | 
						|
 | 
						|
	/* Set /cpus/PowerPC,7447/clock-frequency */
 | 
						|
	devp = find_node_by_prop_value_str(NULL, "device_type", "cpu");
 | 
						|
	if (devp == NULL)
 | 
						|
		fatal("Error: Missing proper cpu device tree node\n\r");
 | 
						|
	v[0] = bip->core_speed;
 | 
						|
	setprop(devp, "clock-frequency", &v[0], sizeof(v[0]));
 | 
						|
 | 
						|
	/* Set /memory/reg size */
 | 
						|
	devp = finddevice("/memory");
 | 
						|
	if (devp == NULL)
 | 
						|
		fatal("Error: Missing /memory device tree node\n\r");
 | 
						|
	v[0] = 0;
 | 
						|
	v[1] = bip->mem_size;
 | 
						|
	setprop(devp, "reg", v, sizeof(v));
 | 
						|
 | 
						|
	/* Update model, if this is a mv64362 */
 | 
						|
	if (bip->bridge_type == BRIDGE_TYPE_MV64362) {
 | 
						|
		devp = find_node_by_compatible(NULL, "marvell,mv64360");
 | 
						|
		if (devp == NULL)
 | 
						|
			fatal("Error: Missing marvell,mv64360"
 | 
						|
					" device tree node\n\r");
 | 
						|
		setprop(devp, "model", "mv64362", strlen("mv64362") + 1);
 | 
						|
	}
 | 
						|
 | 
						|
	/* Set User FLASH size */
 | 
						|
	devp = find_node_by_compatible(NULL, "direct-mapped");
 | 
						|
	if (devp == NULL)
 | 
						|
		fatal("Error: Missing User FLASH device tree node\n\r");
 | 
						|
	rc = getprop(devp, "reg", v, sizeof(v));
 | 
						|
	if (rc != sizeof(v))
 | 
						|
		fatal("Error: Can't find User FLASH reg property\n\r");
 | 
						|
	v[1] = bip->user_flash;
 | 
						|
	setprop(devp, "reg", v, sizeof(v));
 | 
						|
}
 | 
						|
 | 
						|
#define MV64x60_MPP_CNTL_0	0xf000
 | 
						|
#define MV64x60_MPP_CNTL_2	0xf008
 | 
						|
#define MV64x60_GPP_IO_CNTL	0xf100
 | 
						|
#define MV64x60_GPP_LEVEL_CNTL	0xf110
 | 
						|
#define MV64x60_GPP_VALUE_SET	0xf118
 | 
						|
 | 
						|
static void prpmc2800_reset(void)
 | 
						|
{
 | 
						|
	u32 temp;
 | 
						|
 | 
						|
	udelay(5000000);
 | 
						|
 | 
						|
	if (bridge_base != 0) {
 | 
						|
		temp = in_le32((u32 *)(bridge_base + MV64x60_MPP_CNTL_0));
 | 
						|
		temp &= 0xFFFF0FFF;
 | 
						|
		out_le32((u32 *)(bridge_base + MV64x60_MPP_CNTL_0), temp);
 | 
						|
 | 
						|
		temp = in_le32((u32 *)(bridge_base + MV64x60_GPP_LEVEL_CNTL));
 | 
						|
		temp |= 0x00000004;
 | 
						|
		out_le32((u32 *)(bridge_base + MV64x60_GPP_LEVEL_CNTL), temp);
 | 
						|
 | 
						|
		temp = in_le32((u32 *)(bridge_base + MV64x60_GPP_IO_CNTL));
 | 
						|
		temp |= 0x00000004;
 | 
						|
		out_le32((u32 *)(bridge_base + MV64x60_GPP_IO_CNTL), temp);
 | 
						|
 | 
						|
		temp = in_le32((u32 *)(bridge_base + MV64x60_MPP_CNTL_2));
 | 
						|
		temp &= 0xFFFF0FFF;
 | 
						|
		out_le32((u32 *)(bridge_base + MV64x60_MPP_CNTL_2), temp);
 | 
						|
 | 
						|
		temp = in_le32((u32 *)(bridge_base + MV64x60_GPP_LEVEL_CNTL));
 | 
						|
		temp |= 0x00080000;
 | 
						|
		out_le32((u32 *)(bridge_base + MV64x60_GPP_LEVEL_CNTL), temp);
 | 
						|
 | 
						|
		temp = in_le32((u32 *)(bridge_base + MV64x60_GPP_IO_CNTL));
 | 
						|
		temp |= 0x00080000;
 | 
						|
		out_le32((u32 *)(bridge_base + MV64x60_GPP_IO_CNTL), temp);
 | 
						|
 | 
						|
		out_le32((u32 *)(bridge_base + MV64x60_GPP_VALUE_SET),
 | 
						|
				0x00080004);
 | 
						|
	}
 | 
						|
 | 
						|
	for (;;);
 | 
						|
}
 | 
						|
 | 
						|
#define HEAP_SIZE	(16*MB)
 | 
						|
static struct gunzip_state gzstate;
 | 
						|
 | 
						|
void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 | 
						|
                   unsigned long r6, unsigned long r7)
 | 
						|
{
 | 
						|
	struct elf_info ei;
 | 
						|
	char *heap_start, *dtb;
 | 
						|
	int dt_size = _dtb_end - _dtb_start;
 | 
						|
	void *vmlinuz_addr = _vmlinux_start;
 | 
						|
	unsigned long vmlinuz_size = _vmlinux_end - _vmlinux_start;
 | 
						|
	char elfheader[256];
 | 
						|
 | 
						|
	if (dt_size <= 0) /* No fdt */
 | 
						|
		exit();
 | 
						|
 | 
						|
	/*
 | 
						|
	 * Start heap after end of the kernel (after decompressed to
 | 
						|
	 * address 0) or the end of the zImage, whichever is higher.
 | 
						|
	 * That's so things allocated by simple_alloc won't overwrite
 | 
						|
	 * any part of the zImage and the kernel won't overwrite the dtb
 | 
						|
	 * when decompressed & relocated.
 | 
						|
	 */
 | 
						|
	gunzip_start(&gzstate, vmlinuz_addr, vmlinuz_size);
 | 
						|
	gunzip_exactly(&gzstate, elfheader, sizeof(elfheader));
 | 
						|
 | 
						|
	if (!parse_elf32(elfheader, &ei))
 | 
						|
		exit();
 | 
						|
 | 
						|
	heap_start = (char *)(ei.memsize + ei.elfoffset); /* end of kernel*/
 | 
						|
	heap_start = max(heap_start, (char *)_end); /* end of zImage */
 | 
						|
 | 
						|
	if ((unsigned)simple_alloc_init(heap_start, HEAP_SIZE, 2*KB, 16)
 | 
						|
			> (128*MB))
 | 
						|
		exit();
 | 
						|
 | 
						|
	/* Relocate dtb to safe area past end of zImage & kernel */
 | 
						|
	dtb = malloc(dt_size);
 | 
						|
	if (!dtb)
 | 
						|
		exit();
 | 
						|
	memmove(dtb, _dtb_start, dt_size);
 | 
						|
	fdt_init(dtb);
 | 
						|
 | 
						|
	bridge_base = mv64x60_get_bridge_base();
 | 
						|
 | 
						|
	platform_ops.fixups = prpmc2800_fixups;
 | 
						|
	platform_ops.exit = prpmc2800_reset;
 | 
						|
 | 
						|
	if (serial_console_init() < 0)
 | 
						|
		exit();
 | 
						|
}
 | 
						|
 | 
						|
/* _zimage_start called very early--need to turn off external interrupts */
 | 
						|
asm ("	.globl _zimage_start\n\
 | 
						|
	_zimage_start:\n\
 | 
						|
		mfmsr	10\n\
 | 
						|
		rlwinm	10,10,0,~(1<<15)	/* Clear MSR_EE */\n\
 | 
						|
		sync\n\
 | 
						|
		mtmsr	10\n\
 | 
						|
		isync\n\
 | 
						|
		b _zimage_start_lib\n\
 | 
						|
");
 |