94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
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/*
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* Copyright (c) 2007-2009 Apple Inc. All rights reserved.
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* Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
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*
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* This document is the property of Apple Inc.
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* It is considered confidential and proprietary.
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*
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* This document may not be reproduced or transmitted in any form,
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* in whole or in part, without the express written permission of
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* Apple Inc.
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*/
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#include <debug.h>
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#include <lib/heap.h>
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#include <lib/blockdev.h>
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#include <lib/partition.h>
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#include <platform/clocks.h>
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#include <sys/menu.h>
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#include "WMRConfig.h"
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#include "ANDTypes.h"
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#include "FIL.h"
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#include "VFLBuffer.h"
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#include "VFL.h"
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#include "FTL.h"
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#include "WhimoryBoot.h"
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#include "WMROAM.h"
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extern uint32_t nand_fsys_block_offset;
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static int nand_filesys_init(uint32_t block_size, uint32_t block_count);
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static FTLFunctions *TLFuncPtr=NULL;
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static int nand_read_block_hook(struct blockdev *_dev, void *ptr, block_addr block, uint32_t count)
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{
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Int32 err;
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if (count > 0) {
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err = TLFuncPtr->Read(block, count, ptr);
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//err = FTL_Read(block, count, ptr);
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if (err != FIL_SUCCESS) {
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printf("nand_read_block_hook: failure %d reading block %u, count %zd\n", err, block, count);
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return -1;
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}
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}
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return count;
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}
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int ppn_init(void)
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{
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uint32_t block_size, block_count;
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uint32_t index_cache = 0;
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WhimoryBootCode boot_code;
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dprintf(DEBUG_INFO, "ppn_init()\n");
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// Find a signature
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boot_code = WMR_Start(0, 0, gWhimoryInitParameters);
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if (kWhimoryOk == boot_code) {
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// Open the FTL
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boot_code = WMR_Open(&block_count, &block_size, &index_cache, gWhimoryInitParameters);
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if (kWhimoryOk == boot_code) {
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// Publish a block device
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if (0 != nand_filesys_init(block_size, block_count)) {
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return 0;
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}
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}
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} else if (kWhimoryWarningUnformatted == boot_code) {
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printf("***NAND driver is not formatted. Run restore process.***\n");
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}
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return -1;
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}
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static int nand_filesys_init(uint32_t block_size, uint32_t block_count)
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{
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struct blockdev *nand;
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TLFuncPtr = WMR_PPN_GetFTL();
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// build a block device around this NAND
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nand = malloc(sizeof(struct blockdev));
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construct_blockdev(nand, "nand0", (uint64_t)block_count * block_size, block_size);
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nand->read_block_hook = &nand_read_block_hook;
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register_blockdev(nand);
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/* scan ourselves for partitions and publish subdevices */
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partition_scan_and_publish_subdevices("nand0");
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return 0;
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}
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