--- /dev/null
+/*
+ * Calculate Error-correcting Codes. Used by NAND Flash controllers
+ * (not by NAND chips).
+ *
+ * Copyright (c) 2006 Openedhand Ltd.
+ * Written by Andrzej Zaborowski <balrog@zabor.org>
+ *
+ * This code is licensed under the GNU GPL v2.
+ */
+
+struct ecc_state_s {
+ uint8_t cp; /* Column parity */
+ uint16_t lp[2]; /* Line parity */
+ uint16_t count;
+};
+
+/*
+ * Pre-calculated 256-way 1 byte column parity. Table borrowed from Linux.
+ */
+static const uint8_t nand_ecc_precalc_table[] = {
+ 0x00, 0x55, 0x56, 0x03, 0x59, 0x0c, 0x0f, 0x5a,
+ 0x5a, 0x0f, 0x0c, 0x59, 0x03, 0x56, 0x55, 0x00,
+ 0x65, 0x30, 0x33, 0x66, 0x3c, 0x69, 0x6a, 0x3f,
+ 0x3f, 0x6a, 0x69, 0x3c, 0x66, 0x33, 0x30, 0x65,
+ 0x66, 0x33, 0x30, 0x65, 0x3f, 0x6a, 0x69, 0x3c,
+ 0x3c, 0x69, 0x6a, 0x3f, 0x65, 0x30, 0x33, 0x66,
+ 0x03, 0x56, 0x55, 0x00, 0x5a, 0x0f, 0x0c, 0x59,
+ 0x59, 0x0c, 0x0f, 0x5a, 0x00, 0x55, 0x56, 0x03,
+ 0x69, 0x3c, 0x3f, 0x6a, 0x30, 0x65, 0x66, 0x33,
+ 0x33, 0x66, 0x65, 0x30, 0x6a, 0x3f, 0x3c, 0x69,
+ 0x0c, 0x59, 0x5a, 0x0f, 0x55, 0x00, 0x03, 0x56,
+ 0x56, 0x03, 0x00, 0x55, 0x0f, 0x5a, 0x59, 0x0c,
+ 0x0f, 0x5a, 0x59, 0x0c, 0x56, 0x03, 0x00, 0x55,
+ 0x55, 0x00, 0x03, 0x56, 0x0c, 0x59, 0x5a, 0x0f,
+ 0x6a, 0x3f, 0x3c, 0x69, 0x33, 0x66, 0x65, 0x30,
+ 0x30, 0x65, 0x66, 0x33, 0x69, 0x3c, 0x3f, 0x6a,
+ 0x6a, 0x3f, 0x3c, 0x69, 0x33, 0x66, 0x65, 0x30,
+ 0x30, 0x65, 0x66, 0x33, 0x69, 0x3c, 0x3f, 0x6a,
+ 0x0f, 0x5a, 0x59, 0x0c, 0x56, 0x03, 0x00, 0x55,
+ 0x55, 0x00, 0x03, 0x56, 0x0c, 0x59, 0x5a, 0x0f,
+ 0x0c, 0x59, 0x5a, 0x0f, 0x55, 0x00, 0x03, 0x56,
+ 0x56, 0x03, 0x00, 0x55, 0x0f, 0x5a, 0x59, 0x0c,
+ 0x69, 0x3c, 0x3f, 0x6a, 0x30, 0x65, 0x66, 0x33,
+ 0x33, 0x66, 0x65, 0x30, 0x6a, 0x3f, 0x3c, 0x69,
+ 0x03, 0x56, 0x55, 0x00, 0x5a, 0x0f, 0x0c, 0x59,
+ 0x59, 0x0c, 0x0f, 0x5a, 0x00, 0x55, 0x56, 0x03,
+ 0x66, 0x33, 0x30, 0x65, 0x3f, 0x6a, 0x69, 0x3c,
+ 0x3c, 0x69, 0x6a, 0x3f, 0x65, 0x30, 0x33, 0x66,
+ 0x65, 0x30, 0x33, 0x66, 0x3c, 0x69, 0x6a, 0x3f,
+ 0x3f, 0x6a, 0x69, 0x3c, 0x66, 0x33, 0x30, 0x65,
+ 0x00, 0x55, 0x56, 0x03, 0x59, 0x0c, 0x0f, 0x5a,
+ 0x5a, 0x0f, 0x0c, 0x59, 0x03, 0x56, 0x55, 0x00,
+};
+
+/* Update ECC parity count. */
+static inline uint8_t ecc_digest(struct ecc_state_s *s, uint8_t sample)
+{
+ uint8_t idx = nand_ecc_precalc_table[sample];
+
+ s->cp ^= idx & 0x3f;
+ if (idx & 0x40) {
+ s->lp[0] ^= ~s->count;
+ s->lp[1] ^= s->count;
+ }
+ s->count ++;
+
+ return sample;
+}
+
+/* Reinitialise the counters. */
+static inline void ecc_reset(struct ecc_state_s *s)
+{
+ s->lp[0] = 0x0000;
+ s->lp[1] = 0x0000;
+ s->cp = 0x00;
+ s->count = 0;
+}
--- /dev/null
+/*
+ * Flash NAND memory emulation. Based on "16M x 8 Bit NAND Flash
+ * Memory" datasheet for the KM29U128AT / K9F2808U0A chips from
+ * Samsung Electronic.
+ *
+ * Copyright (c) 2006 Openedhand Ltd.
+ * Written by Andrzej Zaborowski <balrog@zabor.org>
+ *
+ * This code is licensed under the GNU GPL v2.
+ */
+
+#ifndef NAND_IO
+
+# include "vl.h"
+
+# define NAND_CMD_READ0 0x00
+# define NAND_CMD_READ1 0x01
+# define NAND_CMD_READ2 0x50
+# define NAND_CMD_LPREAD2 0x30
+# define NAND_CMD_NOSERIALREAD2 0x35
+# define NAND_CMD_RANDOMREAD1 0x05
+# define NAND_CMD_RANDOMREAD2 0xe0
+# define NAND_CMD_READID 0x90
+# define NAND_CMD_RESET 0xff
+# define NAND_CMD_PAGEPROGRAM1 0x80
+# define NAND_CMD_PAGEPROGRAM2 0x10
+# define NAND_CMD_CACHEPROGRAM2 0x15
+# define NAND_CMD_BLOCKERASE1 0x60
+# define NAND_CMD_BLOCKERASE2 0xd0
+# define NAND_CMD_READSTATUS 0x70
+# define NAND_CMD_COPYBACKPRG1 0x85
+
+# define NAND_IOSTATUS_ERROR (1 << 0)
+# define NAND_IOSTATUS_PLANE0 (1 << 1)
+# define NAND_IOSTATUS_PLANE1 (1 << 2)
+# define NAND_IOSTATUS_PLANE2 (1 << 3)
+# define NAND_IOSTATUS_PLANE3 (1 << 4)
+# define NAND_IOSTATUS_BUSY (1 << 6)
+# define NAND_IOSTATUS_UNPROTCT (1 << 7)
+
+# define MAX_PAGE 0x800
+# define MAX_OOB 0x40
+
+struct nand_flash_s {
+ uint8_t manf_id, chip_id;
+ int size, pages;
+ int page_shift, oob_shift, erase_shift, addr_shift;
+ uint8_t *storage;
+ BlockDriverState *bdrv;
+ int mem_oob;
+
+ int cle, ale, ce, wp, gnd;
+
+ uint8_t io[MAX_PAGE + MAX_OOB + 0x400];
+ uint8_t *ioaddr;
+ int iolen;
+
+ uint32_t cmd, addr;
+ int addrlen;
+ int status;
+ int offset;
+
+ void (*blk_write)(struct nand_flash_s *s);
+ void (*blk_erase)(struct nand_flash_s *s);
+ void (*blk_load)(struct nand_flash_s *s, uint32_t addr, int offset);
+};
+
+# define NAND_NO_AUTOINCR 0x00000001
+# define NAND_BUSWIDTH_16 0x00000002
+# define NAND_NO_PADDING 0x00000004
+# define NAND_CACHEPRG 0x00000008
+# define NAND_COPYBACK 0x00000010
+# define NAND_IS_AND 0x00000020
+# define NAND_4PAGE_ARRAY 0x00000040
+# define NAND_NO_READRDY 0x00000100
+# define NAND_SAMSUNG_LP (NAND_NO_PADDING | NAND_COPYBACK)
+
+# define NAND_IO
+
+# define PAGE(addr) ((addr) >> ADDR_SHIFT)
+# define PAGE_START(page) (PAGE(page) * (PAGE_SIZE + OOB_SIZE))
+# define PAGE_MASK ((1 << ADDR_SHIFT) - 1)
+# define OOB_SHIFT (PAGE_SHIFT - 5)
+# define OOB_SIZE (1 << OOB_SHIFT)
+# define SECTOR(addr) ((addr) >> (9 + ADDR_SHIFT - PAGE_SHIFT))
+# define SECTOR_OFFSET(addr) ((addr) & ((511 >> PAGE_SHIFT) << 8))
+
+# define PAGE_SIZE 256
+# define PAGE_SHIFT 8
+# define PAGE_SECTORS 1
+# define ADDR_SHIFT 8
+# include "nand.c"
+# define PAGE_SIZE 512
+# define PAGE_SHIFT 9
+# define PAGE_SECTORS 1
+# define ADDR_SHIFT 8
+# include "nand.c"
+# define PAGE_SIZE 2048
+# define PAGE_SHIFT 11
+# define PAGE_SECTORS 4
+# define ADDR_SHIFT 16
+# include "nand.c"
+
+/* Information based on Linux drivers/mtd/nand/nand_ids.c */
+struct nand_info_s {
+ int size;
+ int width;
+ int page_shift;
+ int erase_shift;
+ uint32_t options;
+} nand_flash_ids[0x100] = {
+ [0 ... 0xff] = { 0 },
+
+ [0x6e] = { 1, 8, 8, 4, 0 },
+ [0x64] = { 2, 8, 8, 4, 0 },
+ [0x6b] = { 4, 8, 9, 4, 0 },
+ [0xe8] = { 1, 8, 8, 4, 0 },
+ [0xec] = { 1, 8, 8, 4, 0 },
+ [0xea] = { 2, 8, 8, 4, 0 },
+ [0xd5] = { 4, 8, 9, 4, 0 },
+ [0xe3] = { 4, 8, 9, 4, 0 },
+ [0xe5] = { 4, 8, 9, 4, 0 },
+ [0xd6] = { 8, 8, 9, 4, 0 },
+
+ [0x39] = { 8, 8, 9, 4, 0 },
+ [0xe6] = { 8, 8, 9, 4, 0 },
+ [0x49] = { 8, 16, 9, 4, NAND_BUSWIDTH_16 },
+ [0x59] = { 8, 16, 9, 4, NAND_BUSWIDTH_16 },
+
+ [0x33] = { 16, 8, 9, 5, 0 },
+ [0x73] = { 16, 8, 9, 5, 0 },
+ [0x43] = { 16, 16, 9, 5, NAND_BUSWIDTH_16 },
+ [0x53] = { 16, 16, 9, 5, NAND_BUSWIDTH_16 },
+
+ [0x35] = { 32, 8, 9, 5, 0 },
+ [0x75] = { 32, 8, 9, 5, 0 },
+ [0x45] = { 32, 16, 9, 5, NAND_BUSWIDTH_16 },
+ [0x55] = { 32, 16, 9, 5, NAND_BUSWIDTH_16 },
+
+ [0x36] = { 64, 8, 9, 5, 0 },
+ [0x76] = { 64, 8, 9, 5, 0 },
+ [0x46] = { 64, 16, 9, 5, NAND_BUSWIDTH_16 },
+ [0x56] = { 64, 16, 9, 5, NAND_BUSWIDTH_16 },
+
+ [0x78] = { 128, 8, 9, 5, 0 },
+ [0x39] = { 128, 8, 9, 5, 0 },
+ [0x79] = { 128, 8, 9, 5, 0 },
+ [0x72] = { 128, 16, 9, 5, NAND_BUSWIDTH_16 },
+ [0x49] = { 128, 16, 9, 5, NAND_BUSWIDTH_16 },
+ [0x74] = { 128, 16, 9, 5, NAND_BUSWIDTH_16 },
+ [0x59] = { 128, 16, 9, 5, NAND_BUSWIDTH_16 },
+
+ [0x71] = { 256, 8, 9, 5, 0 },
+
+ /*
+ * These are the new chips with large page size. The pagesize and the
+ * erasesize is determined from the extended id bytes
+ */
+# define LP_OPTIONS (NAND_SAMSUNG_LP | NAND_NO_READRDY | NAND_NO_AUTOINCR)
+# define LP_OPTIONS16 (LP_OPTIONS | NAND_BUSWIDTH_16)
+
+ /* 512 Megabit */
+ [0xa2] = { 64, 8, 0, 0, LP_OPTIONS },
+ [0xf2] = { 64, 8, 0, 0, LP_OPTIONS },
+ [0xb2] = { 64, 16, 0, 0, LP_OPTIONS16 },
+ [0xc2] = { 64, 16, 0, 0, LP_OPTIONS16 },
+
+ /* 1 Gigabit */
+ [0xa1] = { 128, 8, 0, 0, LP_OPTIONS },
+ [0xf1] = { 128, 8, 0, 0, LP_OPTIONS },
+ [0xb1] = { 128, 16, 0, 0, LP_OPTIONS16 },
+ [0xc1] = { 128, 16, 0, 0, LP_OPTIONS16 },
+
+ /* 2 Gigabit */
+ [0xaa] = { 256, 8, 0, 0, LP_OPTIONS },
+ [0xda] = { 256, 8, 0, 0, LP_OPTIONS },
+ [0xba] = { 256, 16, 0, 0, LP_OPTIONS16 },
+ [0xca] = { 256, 16, 0, 0, LP_OPTIONS16 },
+
+ /* 4 Gigabit */
+ [0xac] = { 512, 8, 0, 0, LP_OPTIONS },
+ [0xdc] = { 512, 8, 0, 0, LP_OPTIONS },
+ [0xbc] = { 512, 16, 0, 0, LP_OPTIONS16 },
+ [0xcc] = { 512, 16, 0, 0, LP_OPTIONS16 },
+
+ /* 8 Gigabit */
+ [0xa3] = { 1024, 8, 0, 0, LP_OPTIONS },
+ [0xd3] = { 1024, 8, 0, 0, LP_OPTIONS },
+ [0xb3] = { 1024, 16, 0, 0, LP_OPTIONS16 },
+ [0xc3] = { 1024, 16, 0, 0, LP_OPTIONS16 },
+
+ /* 16 Gigabit */
+ [0xa5] = { 2048, 8, 0, 0, LP_OPTIONS },
+ [0xd5] = { 2048, 8, 0, 0, LP_OPTIONS },
+ [0xb5] = { 2048, 16, 0, 0, LP_OPTIONS16 },
+ [0xc5] = { 2048, 16, 0, 0, LP_OPTIONS16 },
+};
+
+static void nand_reset(struct nand_flash_s *s)
+{
+ s->cmd = NAND_CMD_READ0;
+ s->addr = 0;
+ s->addrlen = 0;
+ s->iolen = 0;
+ s->offset = 0;
+ s->status &= NAND_IOSTATUS_UNPROTCT;
+}
+
+static void nand_command(struct nand_flash_s *s)
+{
+ switch (s->cmd) {
+ case NAND_CMD_READ0:
+ s->iolen = 0;
+ break;
+
+ case NAND_CMD_READID:
+ s->io[0] = s->manf_id;
+ s->io[1] = s->chip_id;
+ s->io[2] = 'Q'; /* Don't-care byte (often 0xa5) */
+ if (nand_flash_ids[s->chip_id].options & NAND_SAMSUNG_LP)
+ s->io[3] = 0x15; /* Page Size, Block Size, Spare Size.. */
+ else
+ s->io[3] = 0xc0; /* Multi-plane */
+ s->ioaddr = s->io;
+ s->iolen = 4;
+ break;
+
+ case NAND_CMD_RANDOMREAD2:
+ case NAND_CMD_NOSERIALREAD2:
+ if (!(nand_flash_ids[s->chip_id].options & NAND_SAMSUNG_LP))
+ break;
+
+ s->blk_load(s, s->addr, s->addr & ((1 << s->addr_shift) - 1));
+ break;
+
+ case NAND_CMD_RESET:
+ nand_reset(s);
+ break;
+
+ case NAND_CMD_PAGEPROGRAM1:
+ s->ioaddr = s->io;
+ s->iolen = 0;
+ break;
+
+ case NAND_CMD_PAGEPROGRAM2:
+ if (s->wp) {
+ s->blk_write(s);
+ }
+ break;
+
+ case NAND_CMD_BLOCKERASE1:
+ break;
+
+ case NAND_CMD_BLOCKERASE2:
+ if (nand_flash_ids[s->chip_id].options & NAND_SAMSUNG_LP)
+ s->addr <<= 16;
+ else
+ s->addr <<= 8;
+
+ if (s->wp) {
+ s->blk_erase(s);
+ }
+ break;
+
+ case NAND_CMD_READSTATUS:
+ s->io[0] = s->status;
+ s->ioaddr = s->io;
+ s->iolen = 1;
+ break;
+
+ default:
+ printf("%s: Unknown NAND command 0x%02x\n", __FUNCTION__, s->cmd);
+ }
+}
+
+/*
+ * Chip inputs are CLE, ALE, CE, WP, GND and eight I/O pins. Chip
+ * outputs are R/B and eight I/O pins.
+ *
+ * CE, WP and R/B are active low.
+ */
+void nand_setpins(struct nand_flash_s *s,
+ int cle, int ale, int ce, int wp, int gnd)
+{
+ s->cle = cle;
+ s->ale = ale;
+ s->ce = ce;
+ s->wp = wp;
+ s->gnd = gnd;
+ if (wp)
+ s->status |= NAND_IOSTATUS_UNPROTCT;
+ else
+ s->status &= ~NAND_IOSTATUS_UNPROTCT;
+}
+
+void nand_getpins(struct nand_flash_s *s, int *rb)
+{
+ *rb = 1;
+}
+
+void nand_setio(struct nand_flash_s *s, uint8_t value)
+{
+ if (!s->ce && s->cle) {
+ if (nand_flash_ids[s->chip_id].options & NAND_SAMSUNG_LP) {
+ if (s->cmd == NAND_CMD_READ0 && value == NAND_CMD_LPREAD2)
+ return;
+ if (value == NAND_CMD_RANDOMREAD1) {
+ s->addr &= ~((1 << s->addr_shift) - 1);
+ s->addrlen = 0;
+ return;
+ }
+ }
+ if (value == NAND_CMD_READ0)
+ s->offset = 0;
+ else if (value == NAND_CMD_READ1) {
+ s->offset = 0x100;
+ value = NAND_CMD_READ0;
+ }
+ else if (value == NAND_CMD_READ2) {
+ s->offset = 1 << s->page_shift;
+ value = NAND_CMD_READ0;
+ }
+
+ s->cmd = value;
+
+ if (s->cmd == NAND_CMD_READSTATUS ||
+ s->cmd == NAND_CMD_PAGEPROGRAM2 ||
+ s->cmd == NAND_CMD_BLOCKERASE1 ||
+ s->cmd == NAND_CMD_BLOCKERASE2 ||
+ s->cmd == NAND_CMD_NOSERIALREAD2 ||
+ s->cmd == NAND_CMD_RANDOMREAD2 ||
+ s->cmd == NAND_CMD_RESET)
+ nand_command(s);
+
+ if (s->cmd != NAND_CMD_RANDOMREAD2) {
+ s->addrlen = 0;
+ s->addr = 0;
+ }
+ }
+
+ if (s->ale) {
+ s->addr |= value << (s->addrlen * 8);
+ s->addrlen ++;
+
+ if (s->addrlen == 1 && s->cmd == NAND_CMD_READID)
+ nand_command(s);
+
+ if (!(nand_flash_ids[s->chip_id].options & NAND_SAMSUNG_LP) &&
+ s->addrlen == 3 && (
+ s->cmd == NAND_CMD_READ0 ||
+ s->cmd == NAND_CMD_PAGEPROGRAM1))
+ nand_command(s);
+ if ((nand_flash_ids[s->chip_id].options & NAND_SAMSUNG_LP) &&
+ s->addrlen == 4 && (
+ s->cmd == NAND_CMD_READ0 ||
+ s->cmd == NAND_CMD_PAGEPROGRAM1))
+ nand_command(s);
+ }
+
+ if (!s->cle && !s->ale && s->cmd == NAND_CMD_PAGEPROGRAM1) {
+ if (s->iolen < (1 << s->page_shift) + (1 << s->oob_shift))
+ s->io[s->iolen ++] = value;
+ } else if (!s->cle && !s->ale && s->cmd == NAND_CMD_COPYBACKPRG1) {
+ if ((s->addr & ((1 << s->addr_shift) - 1)) <
+ (1 << s->page_shift) + (1 << s->oob_shift)) {
+ s->io[s->iolen + (s->addr & ((1 << s->addr_shift) - 1))] = value;
+ s->addr ++;
+ }
+ }
+}
+
+uint8_t nand_getio(struct nand_flash_s *s)
+{
+ int offset;
+
+ /* Allow sequential reading */
+ if (!s->iolen && s->cmd == NAND_CMD_READ0) {
+ offset = (s->addr & ((1 << s->addr_shift) - 1)) + s->offset;
+ s->offset = 0;
+
+ s->blk_load(s, s->addr, offset);
+ if (s->gnd)
+ s->iolen = (1 << s->page_shift) - offset;
+ else
+ s->iolen = (1 << s->page_shift) + (1 << s->oob_shift) - offset;
+ }
+
+ if (s->ce || s->iolen <= 0)
+ return 0;
+
+ s->iolen --;
+ return *(s->ioaddr ++);
+}
+
+struct nand_flash_s *nand_init(int manf_id, int chip_id)
+{
+ int pagesize;
+ struct nand_flash_s *s;
+
+ if (nand_flash_ids[chip_id].size == 0) {
+ cpu_abort(cpu_single_env, "%s: Unsupported NAND chip ID.\n",
+ __FUNCTION__);
+ }
+
+ s = (struct nand_flash_s *) qemu_mallocz(sizeof(struct nand_flash_s));
+ s->bdrv = mtd_bdrv;
+ s->manf_id = manf_id;
+ s->chip_id = chip_id;
+ s->size = nand_flash_ids[s->chip_id].size << 20;
+ if (nand_flash_ids[s->chip_id].options & NAND_SAMSUNG_LP) {
+ s->page_shift = 11;
+ s->erase_shift = 6;
+ } else {
+ s->page_shift = nand_flash_ids[s->chip_id].page_shift;
+ s->erase_shift = nand_flash_ids[s->chip_id].erase_shift;
+ }
+
+ switch (1 << s->page_shift) {
+ case 256:
+ nand_init_256(s);
+ break;
+ case 512:
+ nand_init_512(s);
+ break;
+ case 2048:
+ nand_init_2048(s);
+ break;
+ default:
+ cpu_abort(cpu_single_env, "%s: Unsupported NAND block size.\n",
+ __FUNCTION__);
+ }
+
+ pagesize = 1 << s->oob_shift;
+ s->mem_oob = 1;
+ if (s->bdrv && bdrv_getlength(s->bdrv) >=
+ (s->pages << s->page_shift) + (s->pages << s->oob_shift)) {
+ pagesize = 0;
+ s->mem_oob = 0;
+ }
+
+ if (!s->bdrv)
+ pagesize += 1 << s->page_shift;
+ if (pagesize)
+ s->storage = (uint8_t *) memset(qemu_malloc(s->pages * pagesize),
+ 0xff, s->pages * pagesize);
+ return s;
+}
+
+void nand_done(struct nand_flash_s *s)
+{
+ if (s->bdrv) {
+ bdrv_close(s->bdrv);
+ bdrv_delete(s->bdrv);
+ }
+
+ if (!s->bdrv || s->mem_oob)
+ free(s->storage);
+
+ free(s);
+}
+
+#else
+
+/* Program a single page */
+static void glue(nand_blk_write_, PAGE_SIZE)(struct nand_flash_s *s)
+{
+ uint32_t off, page, sector, soff;
+ uint8_t iobuf[(PAGE_SECTORS + 2) * 0x200];
+ if (PAGE(s->addr) >= s->pages)
+ return;
+
+ if (!s->bdrv) {
+ memcpy(s->storage + PAGE_START(s->addr) + (s->addr & PAGE_MASK) +
+ s->offset, s->io, s->iolen);
+ } else if (s->mem_oob) {
+ sector = SECTOR(s->addr);
+ off = (s->addr & PAGE_MASK) + s->offset;
+ soff = SECTOR_OFFSET(s->addr);
+ if (bdrv_read(s->bdrv, sector, iobuf, PAGE_SECTORS) == -1) {
+ printf("%s: read error in sector %i\n", __FUNCTION__, sector);
+ return;
+ }
+
+ memcpy(iobuf + (soff | off), s->io, MIN(s->iolen, PAGE_SIZE - off));
+ if (off + s->iolen > PAGE_SIZE) {
+ page = PAGE(s->addr);
+ memcpy(s->storage + (page << OOB_SHIFT), s->io + PAGE_SIZE - off,
+ MIN(OOB_SIZE, off + s->iolen - PAGE_SIZE));
+ }
+
+ if (bdrv_write(s->bdrv, sector, iobuf, PAGE_SECTORS) == -1)
+ printf("%s: write error in sector %i\n", __FUNCTION__, sector);
+ } else {
+ off = PAGE_START(s->addr) + (s->addr & PAGE_MASK) + s->offset;
+ sector = off >> 9;
+ soff = off & 0x1ff;
+ if (bdrv_read(s->bdrv, sector, iobuf, PAGE_SECTORS + 2) == -1) {
+ printf("%s: read error in sector %i\n", __FUNCTION__, sector);
+ return;
+ }
+
+ memcpy(iobuf + soff, s->io, s->iolen);
+
+ if (bdrv_write(s->bdrv, sector, iobuf, PAGE_SECTORS + 2) == -1)
+ printf("%s: write error in sector %i\n", __FUNCTION__, sector);
+ }
+ s->offset = 0;
+}
+
+/* Erase a single block */
+static void glue(nand_blk_erase_, PAGE_SIZE)(struct nand_flash_s *s)
+{
+ uint32_t i, page, addr;
+ uint8_t iobuf[0x200] = { [0 ... 0x1ff] = 0xff, };
+ addr = s->addr & ~((1 << (ADDR_SHIFT + s->erase_shift)) - 1);
+
+ if (PAGE(addr) >= s->pages)
+ return;
+
+ if (!s->bdrv) {
+ memset(s->storage + PAGE_START(addr),
+ 0xff, (PAGE_SIZE + OOB_SIZE) << s->erase_shift);
+ } else if (s->mem_oob) {
+ memset(s->storage + (PAGE(addr) << OOB_SHIFT),
+ 0xff, OOB_SIZE << s->erase_shift);
+ i = SECTOR(addr);
+ page = SECTOR(addr + (ADDR_SHIFT + s->erase_shift));
+ for (; i < page; i ++)
+ if (bdrv_write(s->bdrv, i, iobuf, 1) == -1)
+ printf("%s: write error in sector %i\n", __FUNCTION__, i);
+ } else {
+ addr = PAGE_START(addr);
+ page = addr >> 9;
+ if (bdrv_read(s->bdrv, page, iobuf, 1) == -1)
+ printf("%s: read error in sector %i\n", __FUNCTION__, page);
+ memset(iobuf + (addr & 0x1ff), 0xff, (~addr & 0x1ff) + 1);
+ if (bdrv_write(s->bdrv, page, iobuf, 1) == -1)
+ printf("%s: write error in sector %i\n", __FUNCTION__, page);
+
+ memset(iobuf, 0xff, 0x200);
+ i = (addr & ~0x1ff) + 0x200;
+ for (addr += ((PAGE_SIZE + OOB_SIZE) << s->erase_shift) - 0x200;
+ i < addr; i += 0x200)
+ if (bdrv_write(s->bdrv, i >> 9, iobuf, 1) == -1)
+ printf("%s: write error in sector %i\n", __FUNCTION__, i >> 9);
+
+ page = i >> 9;
+ if (bdrv_read(s->bdrv, page, iobuf, 1) == -1)
+ printf("%s: read error in sector %i\n", __FUNCTION__, page);
+ memset(iobuf, 0xff, addr & 0x1ff);
+ if (bdrv_write(s->bdrv, page, iobuf, 1) == -1)
+ printf("%s: write error in sector %i\n", __FUNCTION__, page);
+ }
+}
+
+static void glue(nand_blk_load_, PAGE_SIZE)(struct nand_flash_s *s,
+ uint32_t addr, int offset)
+{
+ if (PAGE(addr) >= s->pages)
+ return;
+
+ if (s->bdrv) {
+ if (s->mem_oob) {
+ if (bdrv_read(s->bdrv, SECTOR(addr), s->io, PAGE_SECTORS) == -1)
+ printf("%s: read error in sector %i\n",
+ __FUNCTION__, SECTOR(addr));
+ memcpy(s->io + SECTOR_OFFSET(s->addr) + PAGE_SIZE,
+ s->storage + (PAGE(s->addr) << OOB_SHIFT),
+ OOB_SIZE);
+ s->ioaddr = s->io + SECTOR_OFFSET(s->addr) + offset;
+ } else {
+ if (bdrv_read(s->bdrv, PAGE_START(addr) >> 9,
+ s->io, (PAGE_SECTORS + 2)) == -1)
+ printf("%s: read error in sector %i\n",
+ __FUNCTION__, PAGE_START(addr) >> 9);
+ s->ioaddr = s->io + (PAGE_START(addr) & 0x1ff) + offset;
+ }
+ } else {
+ memcpy(s->io, s->storage + PAGE_START(s->addr) +
+ offset, PAGE_SIZE + OOB_SIZE - offset);
+ s->ioaddr = s->io;
+ }
+
+ s->addr &= PAGE_SIZE - 1;
+ s->addr += PAGE_SIZE;
+}
+
+static void glue(nand_init_, PAGE_SIZE)(struct nand_flash_s *s)
+{
+ s->oob_shift = PAGE_SHIFT - 5;
+ s->pages = s->size >> PAGE_SHIFT;
+ s->addr_shift = ADDR_SHIFT;
+
+ s->blk_erase = glue(nand_blk_erase_, PAGE_SIZE);
+ s->blk_write = glue(nand_blk_write_, PAGE_SIZE);
+ s->blk_load = glue(nand_blk_load_, PAGE_SIZE);
+}
+
+# undef PAGE_SIZE
+# undef PAGE_SHIFT
+# undef PAGE_SECTORS
+# undef ADDR_SHIFT
+#endif /* NAND_IO */
projects / sdk / emulator / qemu.git / commitdiff