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/*
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* Flash NAND memory emulation. Based on "16M x 8 Bit NAND Flash
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* Memory" datasheet for the KM29U128AT / K9F2808U0A chips from
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* Samsung Electronic.
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*
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* Copyright (c) 2006 Openedhand Ltd.
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* Written by Andrzej Zaborowski <balrog@zabor.org>
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*
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* Support for additional features based on "MT29F2G16ABCWP 2Gx16"
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* datasheet from Micron Technology and "NAND02G-B2C" datasheet
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* from ST Microelectronics.
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*
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* This code is licensed under the GNU GPL v2.
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*/
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#ifndef NAND_IO
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# include "hw.h" |
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# include "flash.h" |
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# include "blockdev.h" |
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# include "sysbus.h" |
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#include "qemu-error.h" |
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|
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# define NAND_CMD_READ0 0x00 |
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# define NAND_CMD_READ1 0x01 |
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# define NAND_CMD_READ2 0x50 |
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# define NAND_CMD_LPREAD2 0x30 |
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# define NAND_CMD_NOSERIALREAD2 0x35 |
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# define NAND_CMD_RANDOMREAD1 0x05 |
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# define NAND_CMD_RANDOMREAD2 0xe0 |
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# define NAND_CMD_READID 0x90 |
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# define NAND_CMD_RESET 0xff |
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# define NAND_CMD_PAGEPROGRAM1 0x80 |
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# define NAND_CMD_PAGEPROGRAM2 0x10 |
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# define NAND_CMD_CACHEPROGRAM2 0x15 |
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# define NAND_CMD_BLOCKERASE1 0x60 |
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# define NAND_CMD_BLOCKERASE2 0xd0 |
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# define NAND_CMD_READSTATUS 0x70 |
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# define NAND_CMD_COPYBACKPRG1 0x85 |
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|
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# define NAND_IOSTATUS_ERROR (1 << 0) |
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# define NAND_IOSTATUS_PLANE0 (1 << 1) |
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# define NAND_IOSTATUS_PLANE1 (1 << 2) |
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# define NAND_IOSTATUS_PLANE2 (1 << 3) |
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# define NAND_IOSTATUS_PLANE3 (1 << 4) |
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# define NAND_IOSTATUS_BUSY (1 << 6) |
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# define NAND_IOSTATUS_UNPROTCT (1 << 7) |
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|
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# define MAX_PAGE 0x800 |
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# define MAX_OOB 0x40 |
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typedef struct NANDFlashState NANDFlashState; |
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struct NANDFlashState {
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SysBusDevice busdev; |
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uint8_t manf_id, chip_id; |
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uint8_t buswidth; /* in BYTES */
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int size, pages;
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int page_shift, oob_shift, erase_shift, addr_shift;
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uint8_t *storage; |
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BlockDriverState *bdrv; |
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int mem_oob;
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uint8_t cle, ale, ce, wp, gnd; |
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uint8_t io[MAX_PAGE + MAX_OOB + 0x400];
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uint8_t *ioaddr; |
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int iolen;
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uint32_t cmd; |
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uint64_t addr; |
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int addrlen;
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int status;
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int offset;
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void (*blk_write)(NANDFlashState *s);
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void (*blk_erase)(NANDFlashState *s);
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void (*blk_load)(NANDFlashState *s, uint64_t addr, int offset); |
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uint32_t ioaddr_vmstate; |
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}; |
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static void mem_and(uint8_t *dest, const uint8_t *src, size_t n) |
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{ |
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/* Like memcpy() but we logical-AND the data into the destination */
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int i;
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for (i = 0; i < n; i++) { |
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dest[i] &= src[i]; |
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} |
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} |
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# define NAND_NO_AUTOINCR 0x00000001 |
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# define NAND_BUSWIDTH_16 0x00000002 |
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# define NAND_NO_PADDING 0x00000004 |
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# define NAND_CACHEPRG 0x00000008 |
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# define NAND_COPYBACK 0x00000010 |
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# define NAND_IS_AND 0x00000020 |
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# define NAND_4PAGE_ARRAY 0x00000040 |
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# define NAND_NO_READRDY 0x00000100 |
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# define NAND_SAMSUNG_LP (NAND_NO_PADDING | NAND_COPYBACK)
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# define NAND_IO
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# define PAGE(addr) ((addr) >> ADDR_SHIFT)
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# define PAGE_START(page) (PAGE(page) * (PAGE_SIZE + OOB_SIZE))
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# define PAGE_MASK ((1 << ADDR_SHIFT) - 1) |
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# define OOB_SHIFT (PAGE_SHIFT - 5) |
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# define OOB_SIZE (1 << OOB_SHIFT) |
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# define SECTOR(addr) ((addr) >> (9 + ADDR_SHIFT - PAGE_SHIFT)) |
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# define SECTOR_OFFSET(addr) ((addr) & ((511 >> PAGE_SHIFT) << 8)) |
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|
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# define PAGE_SIZE 256 |
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# define PAGE_SHIFT 8 |
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# define PAGE_SECTORS 1 |
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# define ADDR_SHIFT 8 |
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# include "nand.c" |
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# define PAGE_SIZE 512 |
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# define PAGE_SHIFT 9 |
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# define PAGE_SECTORS 1 |
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# define ADDR_SHIFT 8 |
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# include "nand.c" |
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# define PAGE_SIZE 2048 |
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# define PAGE_SHIFT 11 |
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# define PAGE_SECTORS 4 |
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# define ADDR_SHIFT 16 |
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# include "nand.c" |
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/* Information based on Linux drivers/mtd/nand/nand_ids.c */
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static const struct { |
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int size;
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int width;
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int page_shift;
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int erase_shift;
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uint32_t options; |
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} nand_flash_ids[0x100] = {
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[0 ... 0xff] = { 0 }, |
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[0x6e] = { 1, 8, 8, 4, 0 }, |
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[0x64] = { 2, 8, 8, 4, 0 }, |
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[0x6b] = { 4, 8, 9, 4, 0 }, |
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[0xe8] = { 1, 8, 8, 4, 0 }, |
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[0xec] = { 1, 8, 8, 4, 0 }, |
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[0xea] = { 2, 8, 8, 4, 0 }, |
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[0xd5] = { 4, 8, 9, 4, 0 }, |
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[0xe3] = { 4, 8, 9, 4, 0 }, |
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[0xe5] = { 4, 8, 9, 4, 0 }, |
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[0xd6] = { 8, 8, 9, 4, 0 }, |
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[0x39] = { 8, 8, 9, 4, 0 }, |
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[0xe6] = { 8, 8, 9, 4, 0 }, |
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[0x49] = { 8, 16, 9, 4, NAND_BUSWIDTH_16 }, |
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[0x59] = { 8, 16, 9, 4, NAND_BUSWIDTH_16 }, |
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[0x33] = { 16, 8, 9, 5, 0 }, |
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[0x73] = { 16, 8, 9, 5, 0 }, |
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[0x43] = { 16, 16, 9, 5, NAND_BUSWIDTH_16 }, |
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[0x53] = { 16, 16, 9, 5, NAND_BUSWIDTH_16 }, |
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[0x35] = { 32, 8, 9, 5, 0 }, |
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[0x75] = { 32, 8, 9, 5, 0 }, |
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[0x45] = { 32, 16, 9, 5, NAND_BUSWIDTH_16 }, |
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[0x55] = { 32, 16, 9, 5, NAND_BUSWIDTH_16 }, |
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[0x36] = { 64, 8, 9, 5, 0 }, |
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[0x76] = { 64, 8, 9, 5, 0 }, |
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[0x46] = { 64, 16, 9, 5, NAND_BUSWIDTH_16 }, |
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[0x56] = { 64, 16, 9, 5, NAND_BUSWIDTH_16 }, |
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[0x78] = { 128, 8, 9, 5, 0 }, |
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[0x39] = { 128, 8, 9, 5, 0 }, |
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[0x79] = { 128, 8, 9, 5, 0 }, |
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[0x72] = { 128, 16, 9, 5, NAND_BUSWIDTH_16 }, |
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[0x49] = { 128, 16, 9, 5, NAND_BUSWIDTH_16 }, |
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[0x74] = { 128, 16, 9, 5, NAND_BUSWIDTH_16 }, |
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[0x59] = { 128, 16, 9, 5, NAND_BUSWIDTH_16 }, |
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[0x71] = { 256, 8, 9, 5, 0 }, |
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/*
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* These are the new chips with large page size. The pagesize and the
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* erasesize is determined from the extended id bytes
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*/
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# define LP_OPTIONS (NAND_SAMSUNG_LP | NAND_NO_READRDY | NAND_NO_AUTOINCR)
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# define LP_OPTIONS16 (LP_OPTIONS | NAND_BUSWIDTH_16)
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/* 512 Megabit */
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[0xa2] = { 64, 8, 0, 0, LP_OPTIONS }, |
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[0xf2] = { 64, 8, 0, 0, LP_OPTIONS }, |
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[0xb2] = { 64, 16, 0, 0, LP_OPTIONS16 }, |
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[0xc2] = { 64, 16, 0, 0, LP_OPTIONS16 }, |
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/* 1 Gigabit */
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[0xa1] = { 128, 8, 0, 0, LP_OPTIONS }, |
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[0xf1] = { 128, 8, 0, 0, LP_OPTIONS }, |
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[0xb1] = { 128, 16, 0, 0, LP_OPTIONS16 }, |
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[0xc1] = { 128, 16, 0, 0, LP_OPTIONS16 }, |
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/* 2 Gigabit */
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[0xaa] = { 256, 8, 0, 0, LP_OPTIONS }, |
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[0xda] = { 256, 8, 0, 0, LP_OPTIONS }, |
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[0xba] = { 256, 16, 0, 0, LP_OPTIONS16 }, |
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[0xca] = { 256, 16, 0, 0, LP_OPTIONS16 }, |
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/* 4 Gigabit */
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[0xac] = { 512, 8, 0, 0, LP_OPTIONS }, |
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[0xdc] = { 512, 8, 0, 0, LP_OPTIONS }, |
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[0xbc] = { 512, 16, 0, 0, LP_OPTIONS16 }, |
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[0xcc] = { 512, 16, 0, 0, LP_OPTIONS16 }, |
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/* 8 Gigabit */
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[0xa3] = { 1024, 8, 0, 0, LP_OPTIONS }, |
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[0xd3] = { 1024, 8, 0, 0, LP_OPTIONS }, |
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[0xb3] = { 1024, 16, 0, 0, LP_OPTIONS16 }, |
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[0xc3] = { 1024, 16, 0, 0, LP_OPTIONS16 }, |
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/* 16 Gigabit */
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[0xa5] = { 2048, 8, 0, 0, LP_OPTIONS }, |
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[0xd5] = { 2048, 8, 0, 0, LP_OPTIONS }, |
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[0xb5] = { 2048, 16, 0, 0, LP_OPTIONS16 }, |
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[0xc5] = { 2048, 16, 0, 0, LP_OPTIONS16 }, |
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}; |
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static void nand_reset(DeviceState *dev) |
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{ |
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NANDFlashState *s = FROM_SYSBUS(NANDFlashState, sysbus_from_qdev(dev)); |
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s->cmd = NAND_CMD_READ0; |
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s->addr = 0;
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s->addrlen = 0;
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s->iolen = 0;
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s->offset = 0;
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s->status &= NAND_IOSTATUS_UNPROTCT; |
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} |
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static inline void nand_pushio_byte(NANDFlashState *s, uint8_t value) |
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{ |
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s->ioaddr[s->iolen++] = value; |
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for (value = s->buswidth; --value;) {
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s->ioaddr[s->iolen++] = 0;
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} |
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} |
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static void nand_command(NANDFlashState *s) |
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{ |
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unsigned int offset; |
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switch (s->cmd) {
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case NAND_CMD_READ0:
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s->iolen = 0;
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break;
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case NAND_CMD_READID:
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s->ioaddr = s->io; |
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s->iolen = 0;
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nand_pushio_byte(s, s->manf_id); |
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nand_pushio_byte(s, s->chip_id); |
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nand_pushio_byte(s, 'Q'); /* Don't-care byte (often 0xa5) */ |
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if (nand_flash_ids[s->chip_id].options & NAND_SAMSUNG_LP) {
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/* Page Size, Block Size, Spare Size; bit 6 indicates
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* 8 vs 16 bit width NAND.
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*/
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nand_pushio_byte(s, (s->buswidth == 2) ? 0x55 : 0x15); |
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} else {
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nand_pushio_byte(s, 0xc0); /* Multi-plane */ |
262 |
} |
263 |
break;
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case NAND_CMD_RANDOMREAD2:
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case NAND_CMD_NOSERIALREAD2:
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if (!(nand_flash_ids[s->chip_id].options & NAND_SAMSUNG_LP))
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break;
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offset = s->addr & ((1 << s->addr_shift) - 1); |
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s->blk_load(s, s->addr, offset); |
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if (s->gnd)
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s->iolen = (1 << s->page_shift) - offset;
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else
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s->iolen = (1 << s->page_shift) + (1 << s->oob_shift) - offset; |
275 |
break;
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case NAND_CMD_RESET:
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nand_reset(&s->busdev.qdev); |
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break;
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case NAND_CMD_PAGEPROGRAM1:
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s->ioaddr = s->io; |
283 |
s->iolen = 0;
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break;
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case NAND_CMD_PAGEPROGRAM2:
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if (s->wp) {
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s->blk_write(s); |
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} |
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break;
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|
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case NAND_CMD_BLOCKERASE1:
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break;
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|
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case NAND_CMD_BLOCKERASE2:
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if (nand_flash_ids[s->chip_id].options & NAND_SAMSUNG_LP)
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s->addr <<= 16;
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else
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s->addr <<= 8;
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300 |
|
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if (s->wp) {
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s->blk_erase(s); |
303 |
} |
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break;
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|
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case NAND_CMD_READSTATUS:
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s->ioaddr = s->io; |
308 |
s->iolen = 0;
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nand_pushio_byte(s, s->status); |
310 |
break;
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default:
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printf("%s: Unknown NAND command 0x%02x\n", __FUNCTION__, s->cmd);
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} |
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} |
316 |
|
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static void nand_pre_save(void *opaque) |
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{ |
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NANDFlashState *s = opaque; |
320 |
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s->ioaddr_vmstate = s->ioaddr - s->io; |
322 |
} |
323 |
|
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static int nand_post_load(void *opaque, int version_id) |
325 |
{ |
326 |
NANDFlashState *s = opaque; |
327 |
|
328 |
if (s->ioaddr_vmstate > sizeof(s->io)) { |
329 |
return -EINVAL;
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330 |
} |
331 |
s->ioaddr = s->io + s->ioaddr_vmstate; |
332 |
|
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return 0; |
334 |
} |
335 |
|
336 |
static const VMStateDescription vmstate_nand = { |
337 |
.name = "nand",
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338 |
.version_id = 1,
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.minimum_version_id = 1,
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340 |
.minimum_version_id_old = 1,
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.pre_save = nand_pre_save, |
342 |
.post_load = nand_post_load, |
343 |
.fields = (VMStateField[]) { |
344 |
VMSTATE_UINT8(cle, NANDFlashState), |
345 |
VMSTATE_UINT8(ale, NANDFlashState), |
346 |
VMSTATE_UINT8(ce, NANDFlashState), |
347 |
VMSTATE_UINT8(wp, NANDFlashState), |
348 |
VMSTATE_UINT8(gnd, NANDFlashState), |
349 |
VMSTATE_BUFFER(io, NANDFlashState), |
350 |
VMSTATE_UINT32(ioaddr_vmstate, NANDFlashState), |
351 |
VMSTATE_INT32(iolen, NANDFlashState), |
352 |
VMSTATE_UINT32(cmd, NANDFlashState), |
353 |
VMSTATE_UINT64(addr, NANDFlashState), |
354 |
VMSTATE_INT32(addrlen, NANDFlashState), |
355 |
VMSTATE_INT32(status, NANDFlashState), |
356 |
VMSTATE_INT32(offset, NANDFlashState), |
357 |
/* XXX: do we want to save s->storage too? */
|
358 |
VMSTATE_END_OF_LIST() |
359 |
} |
360 |
}; |
361 |
|
362 |
static int nand_device_init(SysBusDevice *dev) |
363 |
{ |
364 |
int pagesize;
|
365 |
NANDFlashState *s = FROM_SYSBUS(NANDFlashState, dev); |
366 |
|
367 |
s->buswidth = nand_flash_ids[s->chip_id].width >> 3;
|
368 |
s->size = nand_flash_ids[s->chip_id].size << 20;
|
369 |
if (nand_flash_ids[s->chip_id].options & NAND_SAMSUNG_LP) {
|
370 |
s->page_shift = 11;
|
371 |
s->erase_shift = 6;
|
372 |
} else {
|
373 |
s->page_shift = nand_flash_ids[s->chip_id].page_shift; |
374 |
s->erase_shift = nand_flash_ids[s->chip_id].erase_shift; |
375 |
} |
376 |
|
377 |
switch (1 << s->page_shift) { |
378 |
case 256: |
379 |
nand_init_256(s); |
380 |
break;
|
381 |
case 512: |
382 |
nand_init_512(s); |
383 |
break;
|
384 |
case 2048: |
385 |
nand_init_2048(s); |
386 |
break;
|
387 |
default:
|
388 |
error_report("Unsupported NAND block size");
|
389 |
return -1; |
390 |
} |
391 |
|
392 |
pagesize = 1 << s->oob_shift;
|
393 |
s->mem_oob = 1;
|
394 |
if (s->bdrv) {
|
395 |
if (bdrv_is_read_only(s->bdrv)) {
|
396 |
error_report("Can't use a read-only drive");
|
397 |
return -1; |
398 |
} |
399 |
if (bdrv_getlength(s->bdrv) >=
|
400 |
(s->pages << s->page_shift) + (s->pages << s->oob_shift)) { |
401 |
pagesize = 0;
|
402 |
s->mem_oob = 0;
|
403 |
} |
404 |
} else {
|
405 |
pagesize += 1 << s->page_shift;
|
406 |
} |
407 |
if (pagesize) {
|
408 |
s->storage = (uint8_t *) memset(g_malloc(s->pages * pagesize), |
409 |
0xff, s->pages * pagesize);
|
410 |
} |
411 |
/* Give s->ioaddr a sane value in case we save state before it is used. */
|
412 |
s->ioaddr = s->io; |
413 |
|
414 |
return 0; |
415 |
} |
416 |
|
417 |
static SysBusDeviceInfo nand_info = {
|
418 |
.init = nand_device_init, |
419 |
.qdev.name = "nand",
|
420 |
.qdev.size = sizeof(NANDFlashState),
|
421 |
.qdev.reset = nand_reset, |
422 |
.qdev.vmsd = &vmstate_nand, |
423 |
.qdev.props = (Property[]) { |
424 |
DEFINE_PROP_UINT8("manufacturer_id", NANDFlashState, manf_id, 0), |
425 |
DEFINE_PROP_UINT8("chip_id", NANDFlashState, chip_id, 0), |
426 |
DEFINE_PROP_DRIVE("drive", NANDFlashState, bdrv),
|
427 |
DEFINE_PROP_END_OF_LIST() |
428 |
} |
429 |
}; |
430 |
|
431 |
static void nand_create_device(void) |
432 |
{ |
433 |
sysbus_register_withprop(&nand_info); |
434 |
} |
435 |
|
436 |
/*
|
437 |
* Chip inputs are CLE, ALE, CE, WP, GND and eight I/O pins. Chip
|
438 |
* outputs are R/B and eight I/O pins.
|
439 |
*
|
440 |
* CE, WP and R/B are active low.
|
441 |
*/
|
442 |
void nand_setpins(DeviceState *dev, uint8_t cle, uint8_t ale,
|
443 |
uint8_t ce, uint8_t wp, uint8_t gnd) |
444 |
{ |
445 |
NANDFlashState *s = (NANDFlashState *) dev; |
446 |
s->cle = cle; |
447 |
s->ale = ale; |
448 |
s->ce = ce; |
449 |
s->wp = wp; |
450 |
s->gnd = gnd; |
451 |
if (wp)
|
452 |
s->status |= NAND_IOSTATUS_UNPROTCT; |
453 |
else
|
454 |
s->status &= ~NAND_IOSTATUS_UNPROTCT; |
455 |
} |
456 |
|
457 |
void nand_getpins(DeviceState *dev, int *rb) |
458 |
{ |
459 |
*rb = 1;
|
460 |
} |
461 |
|
462 |
void nand_setio(DeviceState *dev, uint32_t value)
|
463 |
{ |
464 |
int i;
|
465 |
NANDFlashState *s = (NANDFlashState *) dev; |
466 |
if (!s->ce && s->cle) {
|
467 |
if (nand_flash_ids[s->chip_id].options & NAND_SAMSUNG_LP) {
|
468 |
if (s->cmd == NAND_CMD_READ0 && value == NAND_CMD_LPREAD2)
|
469 |
return;
|
470 |
if (value == NAND_CMD_RANDOMREAD1) {
|
471 |
s->addr &= ~((1 << s->addr_shift) - 1); |
472 |
s->addrlen = 0;
|
473 |
return;
|
474 |
} |
475 |
} |
476 |
if (value == NAND_CMD_READ0)
|
477 |
s->offset = 0;
|
478 |
else if (value == NAND_CMD_READ1) { |
479 |
s->offset = 0x100;
|
480 |
value = NAND_CMD_READ0; |
481 |
} |
482 |
else if (value == NAND_CMD_READ2) { |
483 |
s->offset = 1 << s->page_shift;
|
484 |
value = NAND_CMD_READ0; |
485 |
} |
486 |
|
487 |
s->cmd = value; |
488 |
|
489 |
if (s->cmd == NAND_CMD_READSTATUS ||
|
490 |
s->cmd == NAND_CMD_PAGEPROGRAM2 || |
491 |
s->cmd == NAND_CMD_BLOCKERASE1 || |
492 |
s->cmd == NAND_CMD_BLOCKERASE2 || |
493 |
s->cmd == NAND_CMD_NOSERIALREAD2 || |
494 |
s->cmd == NAND_CMD_RANDOMREAD2 || |
495 |
s->cmd == NAND_CMD_RESET) |
496 |
nand_command(s); |
497 |
|
498 |
if (s->cmd != NAND_CMD_RANDOMREAD2) {
|
499 |
s->addrlen = 0;
|
500 |
} |
501 |
} |
502 |
|
503 |
if (s->ale) {
|
504 |
unsigned int shift = s->addrlen * 8; |
505 |
unsigned int mask = ~(0xff << shift); |
506 |
unsigned int v = value << shift; |
507 |
|
508 |
s->addr = (s->addr & mask) | v; |
509 |
s->addrlen ++; |
510 |
|
511 |
switch (s->addrlen) {
|
512 |
case 1: |
513 |
if (s->cmd == NAND_CMD_READID) {
|
514 |
nand_command(s); |
515 |
} |
516 |
break;
|
517 |
case 2: /* fix cache address as a byte address */ |
518 |
s->addr <<= (s->buswidth - 1);
|
519 |
break;
|
520 |
case 3: |
521 |
if (!(nand_flash_ids[s->chip_id].options & NAND_SAMSUNG_LP) &&
|
522 |
(s->cmd == NAND_CMD_READ0 || |
523 |
s->cmd == NAND_CMD_PAGEPROGRAM1)) { |
524 |
nand_command(s); |
525 |
} |
526 |
break;
|
527 |
case 4: |
528 |
if ((nand_flash_ids[s->chip_id].options & NAND_SAMSUNG_LP) &&
|
529 |
nand_flash_ids[s->chip_id].size < 256 && /* 1Gb or less */ |
530 |
(s->cmd == NAND_CMD_READ0 || |
531 |
s->cmd == NAND_CMD_PAGEPROGRAM1)) { |
532 |
nand_command(s); |
533 |
} |
534 |
break;
|
535 |
case 5: |
536 |
if ((nand_flash_ids[s->chip_id].options & NAND_SAMSUNG_LP) &&
|
537 |
nand_flash_ids[s->chip_id].size >= 256 && /* 2Gb or more */ |
538 |
(s->cmd == NAND_CMD_READ0 || |
539 |
s->cmd == NAND_CMD_PAGEPROGRAM1)) { |
540 |
nand_command(s); |
541 |
} |
542 |
break;
|
543 |
default:
|
544 |
break;
|
545 |
} |
546 |
} |
547 |
|
548 |
if (!s->cle && !s->ale && s->cmd == NAND_CMD_PAGEPROGRAM1) {
|
549 |
if (s->iolen < (1 << s->page_shift) + (1 << s->oob_shift)) { |
550 |
for (i = s->buswidth; i--; value >>= 8) { |
551 |
s->io[s->iolen ++] = (uint8_t) (value & 0xff);
|
552 |
} |
553 |
} |
554 |
} else if (!s->cle && !s->ale && s->cmd == NAND_CMD_COPYBACKPRG1) { |
555 |
if ((s->addr & ((1 << s->addr_shift) - 1)) < |
556 |
(1 << s->page_shift) + (1 << s->oob_shift)) { |
557 |
for (i = s->buswidth; i--; s->addr++, value >>= 8) { |
558 |
s->io[s->iolen + (s->addr & ((1 << s->addr_shift) - 1))] = |
559 |
(uint8_t) (value & 0xff);
|
560 |
} |
561 |
} |
562 |
} |
563 |
} |
564 |
|
565 |
uint32_t nand_getio(DeviceState *dev) |
566 |
{ |
567 |
int offset;
|
568 |
uint32_t x = 0;
|
569 |
NANDFlashState *s = (NANDFlashState *) dev; |
570 |
|
571 |
/* Allow sequential reading */
|
572 |
if (!s->iolen && s->cmd == NAND_CMD_READ0) {
|
573 |
offset = (int) (s->addr & ((1 << s->addr_shift) - 1)) + s->offset; |
574 |
s->offset = 0;
|
575 |
|
576 |
s->blk_load(s, s->addr, offset); |
577 |
if (s->gnd)
|
578 |
s->iolen = (1 << s->page_shift) - offset;
|
579 |
else
|
580 |
s->iolen = (1 << s->page_shift) + (1 << s->oob_shift) - offset; |
581 |
} |
582 |
|
583 |
if (s->ce || s->iolen <= 0) |
584 |
return 0; |
585 |
|
586 |
for (offset = s->buswidth; offset--;) {
|
587 |
x |= s->ioaddr[offset] << (offset << 3);
|
588 |
} |
589 |
/* after receiving READ STATUS command all subsequent reads will
|
590 |
* return the status register value until another command is issued
|
591 |
*/
|
592 |
if (s->cmd != NAND_CMD_READSTATUS) {
|
593 |
s->addr += s->buswidth; |
594 |
s->ioaddr += s->buswidth; |
595 |
s->iolen -= s->buswidth; |
596 |
} |
597 |
return x;
|
598 |
} |
599 |
|
600 |
uint32_t nand_getbuswidth(DeviceState *dev) |
601 |
{ |
602 |
NANDFlashState *s = (NANDFlashState *) dev; |
603 |
return s->buswidth << 3; |
604 |
} |
605 |
|
606 |
DeviceState *nand_init(BlockDriverState *bdrv, int manf_id, int chip_id) |
607 |
{ |
608 |
DeviceState *dev; |
609 |
|
610 |
if (nand_flash_ids[chip_id].size == 0) { |
611 |
hw_error("%s: Unsupported NAND chip ID.\n", __FUNCTION__);
|
612 |
} |
613 |
dev = qdev_create(NULL, "nand"); |
614 |
qdev_prop_set_uint8(dev, "manufacturer_id", manf_id);
|
615 |
qdev_prop_set_uint8(dev, "chip_id", chip_id);
|
616 |
if (bdrv) {
|
617 |
qdev_prop_set_drive_nofail(dev, "drive", bdrv);
|
618 |
} |
619 |
|
620 |
qdev_init_nofail(dev); |
621 |
return dev;
|
622 |
} |
623 |
|
624 |
device_init(nand_create_device) |
625 |
|
626 |
#else
|
627 |
|
628 |
/* Program a single page */
|
629 |
static void glue(nand_blk_write_, PAGE_SIZE)(NANDFlashState *s) |
630 |
{ |
631 |
uint64_t off, page, sector, soff; |
632 |
uint8_t iobuf[(PAGE_SECTORS + 2) * 0x200]; |
633 |
if (PAGE(s->addr) >= s->pages)
|
634 |
return;
|
635 |
|
636 |
if (!s->bdrv) {
|
637 |
mem_and(s->storage + PAGE_START(s->addr) + (s->addr & PAGE_MASK) + |
638 |
s->offset, s->io, s->iolen); |
639 |
} else if (s->mem_oob) { |
640 |
sector = SECTOR(s->addr); |
641 |
off = (s->addr & PAGE_MASK) + s->offset; |
642 |
soff = SECTOR_OFFSET(s->addr); |
643 |
if (bdrv_read(s->bdrv, sector, iobuf, PAGE_SECTORS) == -1) { |
644 |
printf("%s: read error in sector %" PRIu64 "\n", __func__, sector); |
645 |
return;
|
646 |
} |
647 |
|
648 |
mem_and(iobuf + (soff | off), s->io, MIN(s->iolen, PAGE_SIZE - off)); |
649 |
if (off + s->iolen > PAGE_SIZE) {
|
650 |
page = PAGE(s->addr); |
651 |
mem_and(s->storage + (page << OOB_SHIFT), s->io + PAGE_SIZE - off, |
652 |
MIN(OOB_SIZE, off + s->iolen - PAGE_SIZE)); |
653 |
} |
654 |
|
655 |
if (bdrv_write(s->bdrv, sector, iobuf, PAGE_SECTORS) == -1) |
656 |
printf("%s: write error in sector %" PRIu64 "\n", __func__, sector); |
657 |
} else {
|
658 |
off = PAGE_START(s->addr) + (s->addr & PAGE_MASK) + s->offset; |
659 |
sector = off >> 9;
|
660 |
soff = off & 0x1ff;
|
661 |
if (bdrv_read(s->bdrv, sector, iobuf, PAGE_SECTORS + 2) == -1) { |
662 |
printf("%s: read error in sector %" PRIu64 "\n", __func__, sector); |
663 |
return;
|
664 |
} |
665 |
|
666 |
mem_and(iobuf + soff, s->io, s->iolen); |
667 |
|
668 |
if (bdrv_write(s->bdrv, sector, iobuf, PAGE_SECTORS + 2) == -1) |
669 |
printf("%s: write error in sector %" PRIu64 "\n", __func__, sector); |
670 |
} |
671 |
s->offset = 0;
|
672 |
} |
673 |
|
674 |
/* Erase a single block */
|
675 |
static void glue(nand_blk_erase_, PAGE_SIZE)(NANDFlashState *s) |
676 |
{ |
677 |
uint64_t i, page, addr; |
678 |
uint8_t iobuf[0x200] = { [0 ... 0x1ff] = 0xff, }; |
679 |
addr = s->addr & ~((1 << (ADDR_SHIFT + s->erase_shift)) - 1); |
680 |
|
681 |
if (PAGE(addr) >= s->pages)
|
682 |
return;
|
683 |
|
684 |
if (!s->bdrv) {
|
685 |
memset(s->storage + PAGE_START(addr), |
686 |
0xff, (PAGE_SIZE + OOB_SIZE) << s->erase_shift);
|
687 |
} else if (s->mem_oob) { |
688 |
memset(s->storage + (PAGE(addr) << OOB_SHIFT), |
689 |
0xff, OOB_SIZE << s->erase_shift);
|
690 |
i = SECTOR(addr); |
691 |
page = SECTOR(addr + (ADDR_SHIFT + s->erase_shift)); |
692 |
for (; i < page; i ++)
|
693 |
if (bdrv_write(s->bdrv, i, iobuf, 1) == -1) |
694 |
printf("%s: write error in sector %" PRIu64 "\n", __func__, i); |
695 |
} else {
|
696 |
addr = PAGE_START(addr); |
697 |
page = addr >> 9;
|
698 |
if (bdrv_read(s->bdrv, page, iobuf, 1) == -1) |
699 |
printf("%s: read error in sector %" PRIu64 "\n", __func__, page); |
700 |
memset(iobuf + (addr & 0x1ff), 0xff, (~addr & 0x1ff) + 1); |
701 |
if (bdrv_write(s->bdrv, page, iobuf, 1) == -1) |
702 |
printf("%s: write error in sector %" PRIu64 "\n", __func__, page); |
703 |
|
704 |
memset(iobuf, 0xff, 0x200); |
705 |
i = (addr & ~0x1ff) + 0x200; |
706 |
for (addr += ((PAGE_SIZE + OOB_SIZE) << s->erase_shift) - 0x200; |
707 |
i < addr; i += 0x200)
|
708 |
if (bdrv_write(s->bdrv, i >> 9, iobuf, 1) == -1) |
709 |
printf("%s: write error in sector %" PRIu64 "\n", |
710 |
__func__, i >> 9);
|
711 |
|
712 |
page = i >> 9;
|
713 |
if (bdrv_read(s->bdrv, page, iobuf, 1) == -1) |
714 |
printf("%s: read error in sector %" PRIu64 "\n", __func__, page); |
715 |
memset(iobuf, 0xff, ((addr - 1) & 0x1ff) + 1); |
716 |
if (bdrv_write(s->bdrv, page, iobuf, 1) == -1) |
717 |
printf("%s: write error in sector %" PRIu64 "\n", __func__, page); |
718 |
} |
719 |
} |
720 |
|
721 |
static void glue(nand_blk_load_, PAGE_SIZE)(NANDFlashState *s, |
722 |
uint64_t addr, int offset)
|
723 |
{ |
724 |
if (PAGE(addr) >= s->pages)
|
725 |
return;
|
726 |
|
727 |
if (s->bdrv) {
|
728 |
if (s->mem_oob) {
|
729 |
if (bdrv_read(s->bdrv, SECTOR(addr), s->io, PAGE_SECTORS) == -1) |
730 |
printf("%s: read error in sector %" PRIu64 "\n", |
731 |
__func__, SECTOR(addr)); |
732 |
memcpy(s->io + SECTOR_OFFSET(s->addr) + PAGE_SIZE, |
733 |
s->storage + (PAGE(s->addr) << OOB_SHIFT), |
734 |
OOB_SIZE); |
735 |
s->ioaddr = s->io + SECTOR_OFFSET(s->addr) + offset; |
736 |
} else {
|
737 |
if (bdrv_read(s->bdrv, PAGE_START(addr) >> 9, |
738 |
s->io, (PAGE_SECTORS + 2)) == -1) |
739 |
printf("%s: read error in sector %" PRIu64 "\n", |
740 |
__func__, PAGE_START(addr) >> 9);
|
741 |
s->ioaddr = s->io + (PAGE_START(addr) & 0x1ff) + offset;
|
742 |
} |
743 |
} else {
|
744 |
memcpy(s->io, s->storage + PAGE_START(s->addr) + |
745 |
offset, PAGE_SIZE + OOB_SIZE - offset); |
746 |
s->ioaddr = s->io; |
747 |
} |
748 |
} |
749 |
|
750 |
static void glue(nand_init_, PAGE_SIZE)(NANDFlashState *s) |
751 |
{ |
752 |
s->oob_shift = PAGE_SHIFT - 5;
|
753 |
s->pages = s->size >> PAGE_SHIFT; |
754 |
s->addr_shift = ADDR_SHIFT; |
755 |
|
756 |
s->blk_erase = glue(nand_blk_erase_, PAGE_SIZE); |
757 |
s->blk_write = glue(nand_blk_write_, PAGE_SIZE); |
758 |
s->blk_load = glue(nand_blk_load_, PAGE_SIZE); |
759 |
} |
760 |
|
761 |
# undef PAGE_SIZE
|
762 |
# undef PAGE_SHIFT
|
763 |
# undef PAGE_SECTORS
|
764 |
# undef ADDR_SHIFT
|
765 |
#endif /* NAND_IO */ |