iBoot/drivers/flash_nand/raw/raw_nand.c

89 lines
2.1 KiB
C

/*
* Copyright (c) 2007-2009 Apple Inc. All rights reserved.
* Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
*
* This document is the property of Apple Inc.
* It is considered confidential and proprietary.
*
* This document may not be reproduced or transmitted in any form,
* in whole or in part, without the express written permission of
* Apple Inc.
*/
#include <debug.h>
#include <lib/heap.h>
#include <lib/blockdev.h>
#include <lib/partition.h>
#include <platform/clocks.h>
#include <sys/menu.h>
#include "WMRConfig.h"
#include "ANDTypes.h"
#include "FIL.h"
#include "VFLBuffer.h"
#include "VFL.h"
#include "FTL.h"
#include "WMRExam.h"
#include "WMROAM.h"
extern uint32_t nand_fsys_block_offset;
static int nand_filesys_init(uint32_t block_size, uint32_t block_count);
static FTLFunctions *TLFuncPtr=NULL;
static int nand_read_block_hook(struct blockdev *_dev, void *ptr, block_addr block, uint32_t count)
{
Int32 err;
if (count > 0) {
err = TLFuncPtr->Read(block, count, ptr);
//err = FTL_Read(block, count, ptr);
if (err != FIL_SUCCESS) {
printf("nand_read_block_hook: failure %d reading block %u, count %zd\n", err, block, count);
return -1;
}
}
return count;
}
int raw_nand_init(void)
{
Int32 intRes;
uint32_t block_size, block_count;
uint32_t index_cache = 0;
dprintf(DEBUG_INFO,"raw_nand_init()\n");
// Initialise the FTL
intRes = WMR_Init(&block_count, &block_size, &index_cache, gWhimoryInitParameters, nand_fsys_block_offset);
if (intRes != WMR_SUCCESS) {
dprintf(DEBUG_CRITICAL, "Raw NAND FTL failed initialisation\n");
return -1;
}
if (0 != nand_filesys_init(block_size, block_count))
return -1;
return 0;
}
static int nand_filesys_init(uint32_t block_size, uint32_t block_count)
{
struct blockdev *nand;
TLFuncPtr = WMR_GetFTL();
// build a block device around this NAND
nand = malloc(sizeof(struct blockdev));
construct_blockdev(nand, "nand0", (off_t)block_count * block_size, block_size);
nand->read_block_hook = &nand_read_block_hook;
register_blockdev(nand);
/* scan ourselves for partitions and publish subdevices */
partition_scan_and_publish_subdevices("nand0");
return 0;
}