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-rw-r--r--common/cmd_doc.c1644
1 files changed, 0 insertions, 1644 deletions
diff --git a/common/cmd_doc.c b/common/cmd_doc.c
deleted file mode 100644
index 5cc90f0..0000000
--- a/common/cmd_doc.c
+++ /dev/null
@@ -1,1644 +0,0 @@
-/*
- * Driver for Disk-On-Chip 2000 and Millennium
- * (c) 1999 Machine Vision Holdings, Inc.
- * (c) 1999, 2000 David Woodhouse <dwmw2@infradead.org>
- *
- * $Id: doc2000.c,v 1.46 2001/10/02 15:05:13 dwmw2 Exp $
- */
-
-#include <common.h>
-#include <config.h>
-#include <command.h>
-#include <malloc.h>
-#include <asm/io.h>
-#include <linux/mtd/nftl.h>
-#include <linux/mtd/doc2000.h>
-
-#error This code is broken and will be removed outright in the next release.
-#error If you need diskonchip support, please update the Linux driver in
-#error drivers/mtd/nand/diskonchip.c to work with u-boot.
-
-/*
- * ! BROKEN !
- *
- * TODO: must be implemented and tested by someone with HW
- */
-#if 0
-#ifdef CONFIG_SYS_DOC_SUPPORT_2000
-#define DoC_is_2000(doc) (doc->ChipID == DOC_ChipID_Doc2k)
-#else
-#define DoC_is_2000(doc) (0)
-#endif
-
-#ifdef CONFIG_SYS_DOC_SUPPORT_MILLENNIUM
-#define DoC_is_Millennium(doc) (doc->ChipID == DOC_ChipID_DocMil)
-#else
-#define DoC_is_Millennium(doc) (0)
-#endif
-
-/* CONFIG_SYS_DOC_PASSIVE_PROBE:
- In order to ensure that the BIOS checksum is correct at boot time, and
- hence that the onboard BIOS extension gets executed, the DiskOnChip
- goes into reset mode when it is read sequentially: all registers
- return 0xff until the chip is woken up again by writing to the
- DOCControl register.
-
- Unfortunately, this means that the probe for the DiskOnChip is unsafe,
- because one of the first things it does is write to where it thinks
- the DOCControl register should be - which may well be shared memory
- for another device. I've had machines which lock up when this is
- attempted. Hence the possibility to do a passive probe, which will fail
- to detect a chip in reset mode, but is at least guaranteed not to lock
- the machine.
-
- If you have this problem, uncomment the following line:
-#define CONFIG_SYS_DOC_PASSIVE_PROBE
-*/
-
-#undef DOC_DEBUG
-#undef ECC_DEBUG
-#undef PSYCHO_DEBUG
-#undef NFTL_DEBUG
-
-static struct DiskOnChip doc_dev_desc[CONFIG_SYS_MAX_DOC_DEVICE];
-
-/* Current DOC Device */
-static int curr_device = -1;
-
-/* Supported NAND flash devices */
-static struct nand_flash_dev nand_flash_ids[] = {
- {"Toshiba TC5816BDC", NAND_MFR_TOSHIBA, 0x64, 21, 1, 2, 0x1000, 0},
- {"Toshiba TC5832DC", NAND_MFR_TOSHIBA, 0x6b, 22, 0, 2, 0x2000, 0},
- {"Toshiba TH58V128DC", NAND_MFR_TOSHIBA, 0x73, 24, 0, 2, 0x4000, 0},
- {"Toshiba TC58256FT/DC", NAND_MFR_TOSHIBA, 0x75, 25, 0, 2, 0x4000, 0},
- {"Toshiba TH58512FT", NAND_MFR_TOSHIBA, 0x76, 26, 0, 3, 0x4000, 0},
- {"Toshiba TC58V32DC", NAND_MFR_TOSHIBA, 0xe5, 22, 0, 2, 0x2000, 0},
- {"Toshiba TC58V64AFT/DC", NAND_MFR_TOSHIBA, 0xe6, 23, 0, 2, 0x2000, 0},
- {"Toshiba TC58V16BDC", NAND_MFR_TOSHIBA, 0xea, 21, 1, 2, 0x1000, 0},
- {"Toshiba TH58100FT", NAND_MFR_TOSHIBA, 0x79, 27, 0, 3, 0x4000, 0},
- {"Samsung KM29N16000", NAND_MFR_SAMSUNG, 0x64, 21, 1, 2, 0x1000, 0},
- {"Samsung unknown 4Mb", NAND_MFR_SAMSUNG, 0x6b, 22, 0, 2, 0x2000, 0},
- {"Samsung KM29U128T", NAND_MFR_SAMSUNG, 0x73, 24, 0, 2, 0x4000, 0},
- {"Samsung KM29U256T", NAND_MFR_SAMSUNG, 0x75, 25, 0, 2, 0x4000, 0},
- {"Samsung unknown 64Mb", NAND_MFR_SAMSUNG, 0x76, 26, 0, 3, 0x4000, 0},
- {"Samsung KM29W32000", NAND_MFR_SAMSUNG, 0xe3, 22, 0, 2, 0x2000, 0},
- {"Samsung unknown 4Mb", NAND_MFR_SAMSUNG, 0xe5, 22, 0, 2, 0x2000, 0},
- {"Samsung KM29U64000", NAND_MFR_SAMSUNG, 0xe6, 23, 0, 2, 0x2000, 0},
- {"Samsung KM29W16000", NAND_MFR_SAMSUNG, 0xea, 21, 1, 2, 0x1000, 0},
- {"Samsung K9F5616Q0C", NAND_MFR_SAMSUNG, 0x45, 25, 0, 2, 0x4000, 1},
- {"Samsung K9K1216Q0C", NAND_MFR_SAMSUNG, 0x46, 26, 0, 3, 0x4000, 1},
- {"Samsung K9F1G08U0M", NAND_MFR_SAMSUNG, 0xf1, 27, 0, 2, 0, 0},
- {NULL,}
-};
-
-/* ------------------------------------------------------------------------- */
-
-int do_doc (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
-{
- int rcode = 0;
-
- switch (argc) {
- case 0:
- case 1:
- cmd_usage(cmdtp);
- return 1;
- case 2:
- if (strcmp(argv[1],"info") == 0) {
- int i;
-
- putc ('\n');
-
- for (i=0; i<CONFIG_SYS_MAX_DOC_DEVICE; ++i) {
- if(doc_dev_desc[i].ChipID == DOC_ChipID_UNKNOWN)
- continue; /* list only known devices */
- printf ("Device %d: ", i);
- doc_print(&doc_dev_desc[i]);
- }
- return 0;
-
- } else if (strcmp(argv[1],"device") == 0) {
- if ((curr_device < 0) || (curr_device >= CONFIG_SYS_MAX_DOC_DEVICE)) {
- puts ("\nno devices available\n");
- return 1;
- }
- printf ("\nDevice %d: ", curr_device);
- doc_print(&doc_dev_desc[curr_device]);
- return 0;
- }
- cmd_usage(cmdtp);
- return 1;
- case 3:
- if (strcmp(argv[1],"device") == 0) {
- int dev = (int)simple_strtoul(argv[2], NULL, 10);
-
- printf ("\nDevice %d: ", dev);
- if (dev >= CONFIG_SYS_MAX_DOC_DEVICE) {
- puts ("unknown device\n");
- return 1;
- }
- doc_print(&doc_dev_desc[dev]);
- /*doc_print (dev);*/
-
- if (doc_dev_desc[dev].ChipID == DOC_ChipID_UNKNOWN) {
- return 1;
- }
-
- curr_device = dev;
-
- puts ("... is now current device\n");
-
- return 0;
- }
-
- cmd_usage(cmdtp);
- return 1;
- default:
- /* at least 4 args */
-
- if (strcmp(argv[1],"read") == 0 || strcmp(argv[1],"write") == 0) {
- ulong addr = simple_strtoul(argv[2], NULL, 16);
- ulong off = simple_strtoul(argv[3], NULL, 16);
- ulong size = simple_strtoul(argv[4], NULL, 16);
- int cmd = (strcmp(argv[1],"read") == 0);
- int ret, total;
-
- printf ("\nDOC %s: device %d offset %ld, size %ld ... ",
- cmd ? "read" : "write", curr_device, off, size);
-
- ret = doc_rw(doc_dev_desc + curr_device, cmd, off, size,
- (size_t *)&total, (u_char*)addr);
-
- printf ("%d bytes %s: %s\n", total, cmd ? "read" : "write",
- ret ? "ERROR" : "OK");
-
- return ret;
- } else if (strcmp(argv[1],"erase") == 0) {
- ulong off = simple_strtoul(argv[2], NULL, 16);
- ulong size = simple_strtoul(argv[3], NULL, 16);
- int ret;
-
- printf ("\nDOC erase: device %d offset %ld, size %ld ... ",
- curr_device, off, size);
-
- ret = doc_erase (doc_dev_desc + curr_device, off, size);
-
- printf("%s\n", ret ? "ERROR" : "OK");
-
- return ret;
- } else {
- cmd_usage(cmdtp);
- rcode = 1;
- }
-
- return rcode;
- }
-}
-U_BOOT_CMD(
- doc, 5, 1, do_doc,
- "Disk-On-Chip sub-system",
- "info - show available DOC devices\n"
- "doc device [dev] - show or set current device\n"
- "doc read addr off size\n"
- "doc write addr off size - read/write `size'"
- " bytes starting at offset `off'\n"
- " to/from memory address `addr'\n"
- "doc erase off size - erase `size' bytes of DOC from offset `off'"
-);
-
-int do_docboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
-{
- char *boot_device = NULL;
- char *ep;
- int dev;
- ulong cnt;
- ulong addr;
- ulong offset = 0;
- image_header_t *hdr;
- int rcode = 0;
-#if defined(CONFIG_FIT)
- const void *fit_hdr = NULL;
-#endif
-
- show_boot_progress (34);
- switch (argc) {
- case 1:
- addr = CONFIG_SYS_LOAD_ADDR;
- boot_device = getenv ("bootdevice");
- break;
- case 2:
- addr = simple_strtoul(argv[1], NULL, 16);
- boot_device = getenv ("bootdevice");
- break;
- case 3:
- addr = simple_strtoul(argv[1], NULL, 16);
- boot_device = argv[2];
- break;
- case 4:
- addr = simple_strtoul(argv[1], NULL, 16);
- boot_device = argv[2];
- offset = simple_strtoul(argv[3], NULL, 16);
- break;
- default:
- cmd_usage(cmdtp);
- show_boot_progress (-35);
- return 1;
- }
-
- show_boot_progress (35);
- if (!boot_device) {
- puts ("\n** No boot device **\n");
- show_boot_progress (-36);
- return 1;
- }
- show_boot_progress (36);
-
- dev = simple_strtoul(boot_device, &ep, 16);
-
- if ((dev >= CONFIG_SYS_MAX_DOC_DEVICE) ||
- (doc_dev_desc[dev].ChipID == DOC_ChipID_UNKNOWN)) {
- printf ("\n** Device %d not available\n", dev);
- show_boot_progress (-37);
- return 1;
- }
- show_boot_progress (37);
-
- printf ("\nLoading from device %d: %s at 0x%lX (offset 0x%lX)\n",
- dev, doc_dev_desc[dev].name, doc_dev_desc[dev].physadr,
- offset);
-
- if (doc_rw (doc_dev_desc + dev, 1, offset,
- SECTORSIZE, NULL, (u_char *)addr)) {
- printf ("** Read error on %d\n", dev);
- show_boot_progress (-38);
- return 1;
- }
- show_boot_progress (38);
-
- switch (genimg_get_format ((void *)addr)) {
- case IMAGE_FORMAT_LEGACY:
- hdr = (image_header_t *)addr;
-
- image_print_contents (hdr);
-
- cnt = image_get_image_size (hdr);
- break;
-#if defined(CONFIG_FIT)
- case IMAGE_FORMAT_FIT:
- fit_hdr = (const void *)addr;
- puts ("Fit image detected...\n");
-
- cnt = fit_get_size (fit_hdr);
- break;
-#endif
- default:
- show_boot_progress (-39);
- puts ("** Unknown image type\n");
- return 1;
- }
- show_boot_progress (39);
-
- cnt -= SECTORSIZE;
- if (doc_rw (doc_dev_desc + dev, 1, offset + SECTORSIZE, cnt,
- NULL, (u_char *)(addr+SECTORSIZE))) {
- printf ("** Read error on %d\n", dev);
- show_boot_progress (-40);
- return 1;
- }
- show_boot_progress (40);
-
-#if defined(CONFIG_FIT)
- /* This cannot be done earlier, we need complete FIT image in RAM first */
- if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
- if (!fit_check_format (fit_hdr)) {
- show_boot_progress (-130);
- puts ("** Bad FIT image format\n");
- return 1;
- }
- show_boot_progress (131);
- fit_print_contents (fit_hdr);
- }
-#endif
-
- /* Loading ok, update default load address */
-
- load_addr = addr;
-
- /* Check if we should attempt an auto-start */
- if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
- char *local_args[2];
- extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
-
- local_args[0] = argv[0];
- local_args[1] = NULL;
-
- printf ("Automatic boot of image at addr 0x%08lX ...\n", addr);
-
- do_bootm (cmdtp, 0, 1, local_args);
- rcode = 1;
- }
- return rcode;
-}
-
-U_BOOT_CMD(
- docboot, 4, 1, do_docboot,
- "boot from DOC device",
- "loadAddr dev"
-);
-
-int doc_rw (struct DiskOnChip* this, int cmd,
- loff_t from, size_t len,
- size_t * retlen, u_char * buf)
-{
- int noecc, ret = 0, n, total = 0;
- char eccbuf[6];
-
- while(len) {
- /* The ECC will not be calculated correctly if
- less than 512 is written or read */
- noecc = (from != (from | 0x1ff) + 1) || (len < 0x200);
-
- if (cmd)
- ret = doc_read_ecc(this, from, len,
- (size_t *)&n, (u_char*)buf,
- noecc ? (uchar *)NULL : (uchar *)eccbuf);
- else
- ret = doc_write_ecc(this, from, len,
- (size_t *)&n, (u_char*)buf,
- noecc ? (uchar *)NULL : (uchar *)eccbuf);
-
- if (ret)
- break;
-
- from += n;
- buf += n;
- total += n;
- len -= n;
- }
-
- if (retlen)
- *retlen = total;
-
- return ret;
-}
-
-void doc_print(struct DiskOnChip *this) {
- printf("%s at 0x%lX,\n"
- "\t %d chip%s %s, size %d MB, \n"
- "\t total size %ld MB, sector size %ld kB\n",
- this->name, this->physadr, this->numchips,
- this->numchips>1 ? "s" : "", this->chips_name,
- 1 << (this->chipshift - 20),
- this->totlen >> 20, this->erasesize >> 10);
-
- if (this->nftl_found) {
- struct NFTLrecord *nftl = &this->nftl;
- unsigned long bin_size, flash_size;
-
- bin_size = nftl->nb_boot_blocks * this->erasesize;
- flash_size = (nftl->nb_blocks - nftl->nb_boot_blocks) * this->erasesize;
-
- printf("\t NFTL boot record:\n"
- "\t Binary partition: size %ld%s\n"
- "\t Flash disk partition: size %ld%s, offset 0x%lx\n",
- bin_size > (1 << 20) ? bin_size >> 20 : bin_size >> 10,
- bin_size > (1 << 20) ? "MB" : "kB",
- flash_size > (1 << 20) ? flash_size >> 20 : flash_size >> 10,
- flash_size > (1 << 20) ? "MB" : "kB", bin_size);
- } else {
- puts ("\t No NFTL boot record found.\n");
- }
-}
-
-/* ------------------------------------------------------------------------- */
-
-/* This function is needed to avoid calls of the __ashrdi3 function. */
-static int shr(int val, int shift) {
- return val >> shift;
-}
-
-/* Perform the required delay cycles by reading from the appropriate register */
-static void DoC_Delay(struct DiskOnChip *doc, unsigned short cycles)
-{
- volatile char dummy;
- int i;
-
- for (i = 0; i < cycles; i++) {
- if (DoC_is_Millennium(doc))
- dummy = ReadDOC(doc->virtadr, NOP);
- else
- dummy = ReadDOC(doc->virtadr, DOCStatus);
- }
-
-}
-
-/* DOC_WaitReady: Wait for RDY line to be asserted by the flash chip */
-static int _DoC_WaitReady(struct DiskOnChip *doc)
-{
- unsigned long docptr = doc->virtadr;
- unsigned long start = get_timer(0);
-
-#ifdef PSYCHO_DEBUG
- puts ("_DoC_WaitReady called for out-of-line wait\n");
-#endif
-
- /* Out-of-line routine to wait for chip response */
- while (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B)) {
-#ifdef CONFIG_SYS_DOC_SHORT_TIMEOUT
- /* it seems that after a certain time the DoC deasserts
- * the CDSN_CTRL_FR_B although it is not ready...
- * using a short timout solve this (timer increments every ms) */
- if (get_timer(start) > 10) {
- return DOC_ETIMEOUT;
- }
-#else
- if (get_timer(start) > 10 * 1000) {
- puts ("_DoC_WaitReady timed out.\n");
- return DOC_ETIMEOUT;
- }
-#endif
- udelay(1);
- }
-
- return 0;
-}
-
-static int DoC_WaitReady(struct DiskOnChip *doc)
-{
- unsigned long docptr = doc->virtadr;
- /* This is inline, to optimise the common case, where it's ready instantly */
- int ret = 0;
-
- /* 4 read form NOP register should be issued in prior to the read from CDSNControl
- see Software Requirement 11.4 item 2. */
- DoC_Delay(doc, 4);
-
- if (!(ReadDOC(docptr, CDSNControl) & CDSN_CTRL_FR_B))
- /* Call the out-of-line routine to wait */
- ret = _DoC_WaitReady(doc);
-
- /* issue 2 read from NOP register after reading from CDSNControl register
- see Software Requirement 11.4 item 2. */
- DoC_Delay(doc, 2);
-
- return ret;
-}
-
-/* DoC_Command: Send a flash command to the flash chip through the CDSN Slow IO register to
- bypass the internal pipeline. Each of 4 delay cycles (read from the NOP register) is
- required after writing to CDSN Control register, see Software Requirement 11.4 item 3. */
-
-static inline int DoC_Command(struct DiskOnChip *doc, unsigned char command,
- unsigned char xtraflags)
-{
- unsigned long docptr = doc->virtadr;
-
- if (DoC_is_2000(doc))
- xtraflags |= CDSN_CTRL_FLASH_IO;
-
- /* Assert the CLE (Command Latch Enable) line to the flash chip */
- WriteDOC(xtraflags | CDSN_CTRL_CLE | CDSN_CTRL_CE, docptr, CDSNControl);
- DoC_Delay(doc, 4); /* Software requirement 11.4.3 for Millennium */
-
- if (DoC_is_Millennium(doc))
- WriteDOC(command, docptr, CDSNSlowIO);
-
- /* Send the command */
- WriteDOC_(command, docptr, doc->ioreg);
-
- /* Lower the CLE line */
- WriteDOC(xtraflags | CDSN_CTRL_CE, docptr, CDSNControl);
- DoC_Delay(doc, 4); /* Software requirement 11.4.3 for Millennium */
-
- /* Wait for the chip to respond - Software requirement 11.4.1 (extended for any command) */
- return DoC_WaitReady(doc);
-}
-
-/* DoC_Address: Set the current address for the flash chip through the CDSN Slow IO register to
- bypass the internal pipeline. Each of 4 delay cycles (read from the NOP register) is
- required after writing to CDSN Control register, see Software Requirement 11.4 item 3. */
-
-static int DoC_Address(struct DiskOnChip *doc, int numbytes, unsigned long ofs,
- unsigned char xtraflags1, unsigned char xtraflags2)
-{
- unsigned long docptr;
- int i;
-
- docptr = doc->virtadr;
-
- if (DoC_is_2000(doc))
- xtraflags1 |= CDSN_CTRL_FLASH_IO;
-
- /* Assert the ALE (Address Latch Enable) line to the flash chip */
- WriteDOC(xtraflags1 | CDSN_CTRL_ALE | CDSN_CTRL_CE, docptr, CDSNControl);
-
- DoC_Delay(doc, 4); /* Software requirement 11.4.3 for Millennium */
-
- /* Send the address */
- /* Devices with 256-byte page are addressed as:
- Column (bits 0-7), Page (bits 8-15, 16-23, 24-31)
- * there is no device on the market with page256
- and more than 24 bits.
- Devices with 512-byte page are addressed as:
- Column (bits 0-7), Page (bits 9-16, 17-24, 25-31)
- * 25-31 is sent only if the chip support it.
- * bit 8 changes the read command to be sent
- (NAND_CMD_READ0 or NAND_CMD_READ1).
- */
-
- if (numbytes == ADDR_COLUMN || numbytes == ADDR_COLUMN_PAGE) {
- if (DoC_is_Millennium(doc))
- WriteDOC(ofs & 0xff, docptr, CDSNSlowIO);
- WriteDOC_(ofs & 0xff, docptr, doc->ioreg);
- }
-
- if (doc->page256) {
- ofs = ofs >> 8;
- } else {
- ofs = ofs >> 9;
- }
-
- if (numbytes == ADDR_PAGE || numbytes == ADDR_COLUMN_PAGE) {
- for (i = 0; i < doc->pageadrlen; i++, ofs = ofs >> 8) {
- if (DoC_is_Millennium(doc))
- WriteDOC(ofs & 0xff, docptr, CDSNSlowIO);
- WriteDOC_(ofs & 0xff, docptr, doc->ioreg);
- }
- }
-
- DoC_Delay(doc, 2); /* Needed for some slow flash chips. mf. */
-
- /* FIXME: The SlowIO's for millennium could be replaced by
- a single WritePipeTerm here. mf. */
-
- /* Lower the ALE line */
- WriteDOC(xtraflags1 | xtraflags2 | CDSN_CTRL_CE, docptr,
- CDSNControl);
-
- DoC_Delay(doc, 4); /* Software requirement 11.4.3 for Millennium */
-
- /* Wait for the chip to respond - Software requirement 11.4.1 */
- return DoC_WaitReady(doc);
-}
-
-/* Read a buffer from DoC, taking care of Millennium oddities */
-static void DoC_ReadBuf(struct DiskOnChip *doc, u_char * buf, int len)
-{
- volatile int dummy;
- int modulus = 0xffff;
- unsigned long docptr;
- int i;
-
- docptr = doc->virtadr;
-
- if (len <= 0)
- return;
-
- if (DoC_is_Millennium(doc)) {
- /* Read the data via the internal pipeline through CDSN IO register,
- see Pipelined Read Operations 11.3 */
- dummy = ReadDOC(docptr, ReadPipeInit);
-
- /* Millennium should use the LastDataRead register - Pipeline Reads */
- len--;
-
- /* This is needed for correctly ECC calculation */
- modulus = 0xff;
- }
-
- for (i = 0; i < len; i++)
- buf[i] = ReadDOC_(docptr, doc->ioreg + (i & modulus));
-
- if (DoC_is_Millennium(doc)) {
- buf[i] = ReadDOC(docptr, LastDataRead);
- }
-}
-
-/* Write a buffer to DoC, taking care of Millennium oddities */
-static void DoC_WriteBuf(struct DiskOnChip *doc, const u_char * buf, int len)
-{
- unsigned long docptr;
- int i;
-
- docptr = doc->virtadr;
-
- if (len <= 0)
- return;
-
- for (i = 0; i < len; i++)
- WriteDOC_(buf[i], docptr, doc->ioreg + i);
-
- if (DoC_is_Millennium(doc)) {
- WriteDOC(0x00, docptr, WritePipeTerm);
- }
-}
-
-
-/* DoC_SelectChip: Select a given flash chip within the current floor */
-
-static inline int DoC_SelectChip(struct DiskOnChip *doc, int chip)
-{
- unsigned long docptr = doc->virtadr;
-
- /* Software requirement 11.4.4 before writing DeviceSelect */
- /* Deassert the CE line to eliminate glitches on the FCE# outputs */
- WriteDOC(CDSN_CTRL_WP, docptr, CDSNControl);
- DoC_Delay(doc, 4); /* Software requirement 11.4.3 for Millennium */
-
- /* Select the individual flash chip requested */
- WriteDOC(chip, docptr, CDSNDeviceSelect);
- DoC_Delay(doc, 4);
-
- /* Reassert the CE line */
- WriteDOC(CDSN_CTRL_CE | CDSN_CTRL_FLASH_IO | CDSN_CTRL_WP, docptr,
- CDSNControl);
- DoC_Delay(doc, 4); /* Software requirement 11.4.3 for Millennium */
-
- /* Wait for it to be ready */
- return DoC_WaitReady(doc);
-}
-
-/* DoC_SelectFloor: Select a given floor (bank of flash chips) */
-
-static inline int DoC_SelectFloor(struct DiskOnChip *doc, int floor)
-{
- unsigned long docptr = doc->virtadr;
-
- /* Select the floor (bank) of chips required */
- WriteDOC(floor, docptr, FloorSelect);
-
- /* Wait for the chip to be ready */
- return DoC_WaitReady(doc);
-}
-
-/* DoC_IdentChip: Identify a given NAND chip given {floor,chip} */
-
-static int DoC_IdentChip(struct DiskOnChip *doc, int floor, int chip)
-{
- int mfr, id, i;
- volatile char dummy;
-
- /* Page in the required floor/chip */
- DoC_SelectFloor(doc, floor);
- DoC_SelectChip(doc, chip);
-
- /* Reset the chip */
- if (DoC_Command(doc, NAND_CMD_RESET, CDSN_CTRL_WP)) {
-#ifdef DOC_DEBUG
- printf("DoC_Command (reset) for %d,%d returned true\n",
- floor, chip);
-#endif
- return 0;
- }
-
-
- /* Read the NAND chip ID: 1. Send ReadID command */
- if (DoC_Command(doc, NAND_CMD_READID, CDSN_CTRL_WP)) {
-#ifdef DOC_DEBUG
- printf("DoC_Command (ReadID) for %d,%d returned true\n",
- floor, chip);
-#endif
- return 0;
- }
-
- /* Read the NAND chip ID: 2. Send address byte zero */
- DoC_Address(doc, ADDR_COLUMN, 0, CDSN_CTRL_WP, 0);
-
- /* Read the manufacturer and device id codes from the device */
-
- /* CDSN Slow IO register see Software Requirement 11.4 item 5. */
- dummy = ReadDOC(doc->virtadr, CDSNSlowIO);
- DoC_Delay(doc, 2);
- mfr = ReadDOC_(doc->virtadr, doc->ioreg);
-
- /* CDSN Slow IO register see Software Requirement 11.4 item 5. */
- dummy = ReadDOC(doc->virtadr, CDSNSlowIO);
- DoC_Delay(doc, 2);
- id = ReadDOC_(doc->virtadr, doc->ioreg);
-
- /* No response - return failure */
- if (mfr == 0xff || mfr == 0)
- return 0;
-
- /* Check it's the same as the first chip we identified.
- * M-Systems say that any given DiskOnChip device should only
- * contain _one_ type of flash part, although that's not a
- * hardware restriction. */
- if (doc->mfr) {
- if (doc->mfr == mfr && doc->id == id)
- return 1; /* This is another the same the first */
- else
- printf("Flash chip at floor %d, chip %d is different:\n",
- floor, chip);
- }
-
- /* Print and store the manufacturer and ID codes. */
- for (i = 0; nand_flash_ids[i].name != NULL; i++) {
- if (mfr == nand_flash_ids[i].manufacture_id &&
- id == nand_flash_ids[i].model_id) {
-#ifdef DOC_DEBUG
- printf("Flash chip found: Manufacturer ID: %2.2X, "
- "Chip ID: %2.2X (%s)\n", mfr, id,
- nand_flash_ids[i].name);
-#endif
- if (!doc->mfr) {
- doc->mfr = mfr;
- doc->id = id;
- doc->chipshift =
- nand_flash_ids[i].chipshift;
- doc->page256 = nand_flash_ids[i].page256;
- doc->pageadrlen =
- nand_flash_ids[i].pageadrlen;
- doc->erasesize =
- nand_flash_ids[i].erasesize;
- doc->chips_name =
- nand_flash_ids[i].name;
- return 1;
- }
- return 0;
- }
- }
-
-
-#ifdef DOC_DEBUG
- /* We haven't fully identified the chip. Print as much as we know. */
- printf("Unknown flash chip found: %2.2X %2.2X\n",
- id, mfr);
-#endif
-
- return 0;
-}
-
-/* DoC_ScanChips: Find all NAND chips present in a DiskOnChip, and identify them */
-
-static void DoC_ScanChips(struct DiskOnChip *this)
-{
- int floor, chip;
- int numchips[MAX_FLOORS];
- int maxchips = MAX_CHIPS;
- int ret = 1;
-
- this->numchips = 0;
- this->mfr = 0;
- this->id = 0;
-
- if (DoC_is_Millennium(this))
- maxchips = MAX_CHIPS_MIL;
-
- /* For each floor, find the number of valid chips it contains */
- for (floor = 0; floor < MAX_FLOORS; floor++) {
- ret = 1;
- numchips[floor] = 0;
- for (chip = 0; chip < maxchips && ret != 0; chip++) {
-
- ret = DoC_IdentChip(this, floor, chip);
- if (ret) {
- numchips[floor]++;
- this->numchips++;
- }
- }
- }
-
- /* If there are none at all that we recognise, bail */
- if (!this->numchips) {
- puts ("No flash chips recognised.\n");
- return;
- }
-
- /* Allocate an array to hold the information for each chip */
- this->chips = malloc(sizeof(struct Nand) * this->numchips);
- if (!this->chips) {
- puts ("No memory for allocating chip info structures\n");
- return;
- }
-
- ret = 0;
-
- /* Fill out the chip array with {floor, chipno} for each
- * detected chip in the device. */
- for (floor = 0; floor < MAX_FLOORS; floor++) {
- for (chip = 0; chip < numchips[floor]; chip++) {
- this->chips[ret].floor = floor;
- this->chips[ret].chip = chip;
- this->chips[ret].curadr = 0;
- this->chips[ret].curmode = 0x50;
- ret++;
- }
- }
-
- /* Calculate and print the total size of the device */
- this->totlen = this->numchips * (1 << this->chipshift);
-
-#ifdef DOC_DEBUG
- printf("%d flash chips found. Total DiskOnChip size: %ld MB\n",
- this->numchips, this->totlen >> 20);
-#endif
-}
-
-/* find_boot_record: Find the NFTL Media Header and its Spare copy which contains the
- * various device information of the NFTL partition and Bad Unit Table. Update
- * the ReplUnitTable[] table accroding to the Bad Unit Table. ReplUnitTable[]
- * is used for management of Erase Unit in other routines in nftl.c and nftlmount.c
- */
-static int find_boot_record(struct NFTLrecord *nftl)
-{
- struct nftl_uci1 h1;
- struct nftl_oob oob;
- unsigned int block, boot_record_count = 0;
- int retlen;
- u8 buf[SECTORSIZE];
- struct NFTLMediaHeader *mh = &nftl->MediaHdr;
- unsigned int i;
-
- nftl->MediaUnit = BLOCK_NIL;
- nftl->SpareMediaUnit = BLOCK_NIL;
-
- /* search for a valid boot record */
- for (block = 0; block < nftl->nb_blocks; block++) {
- int ret;
-
- /* Check for ANAND header first. Then can whinge if it's found but later
- checks fail */
- if ((ret = doc_read_ecc(nftl->mtd, block * nftl->EraseSize, SECTORSIZE,
- (size_t *)&retlen, buf, NULL))) {
- static int warncount = 5;
-
- if (warncount) {
- printf("Block read at 0x%x failed\n", block * nftl->EraseSize);
- if (!--warncount)
- puts ("Further failures for this block will not be printed\n");
- }
- continue;
- }
-
- if (retlen < 6 || memcmp(buf, "ANAND", 6)) {
- /* ANAND\0 not found. Continue */
-#ifdef PSYCHO_DEBUG
- printf("ANAND header not found at 0x%x\n", block * nftl->EraseSize);
-#endif
- continue;
- }
-
-#ifdef NFTL_DEBUG
- printf("ANAND header found at 0x%x\n", block * nftl->EraseSize);
-#endif
-
- /* To be safer with BIOS, also use erase mark as discriminant */
- if ((ret = doc_read_oob(nftl->mtd, block * nftl->EraseSize + SECTORSIZE + 8,
- 8, (size_t *)&retlen, (uchar *)&h1) < 0)) {
-#ifdef NFTL_DEBUG
- printf("ANAND header found at 0x%x, but OOB data read failed\n",
- block * nftl->EraseSize);
-#endif
- continue;
- }
-
- /* OK, we like it. */
-
- if (boot_record_count) {
- /* We've already processed one. So we just check if
- this one is the same as the first one we found */
- if (memcmp(mh, buf, sizeof(struct NFTLMediaHeader))) {
-#ifdef NFTL_DEBUG
- printf("NFTL Media Headers at 0x%x and 0x%x disagree.\n",
- nftl->MediaUnit * nftl->EraseSize, block * nftl->EraseSize);
-#endif
- /* if (debug) Print both side by side */
- return -1;
- }
- if (boot_record_count == 1)
- nftl->SpareMediaUnit = block;
-
- boot_record_count++;
- continue;
- }
-
- /* This is the first we've seen. Copy the media header structure into place */
- memcpy(mh, buf, sizeof(struct NFTLMediaHeader));
-
- /* Do some sanity checks on it */
- if (mh->UnitSizeFactor == 0) {
-#ifdef NFTL_DEBUG
- puts ("UnitSizeFactor 0x00 detected.\n"
- "This violates the spec but we think we know what it means...\n");
-#endif
- } else if (mh->UnitSizeFactor != 0xff) {
- printf ("Sorry, we don't support UnitSizeFactor "
- "of != 1 yet.\n");
- return -1;
- }
-
- nftl->nb_boot_blocks = le16_to_cpu(mh->FirstPhysicalEUN);
- if ((nftl->nb_boot_blocks + 2) >= nftl->nb_blocks) {
- printf ("NFTL Media Header sanity check failed:\n"
- "nb_boot_blocks (%d) + 2 > nb_blocks (%d)\n",
- nftl->nb_boot_blocks, nftl->nb_blocks);
- return -1;
- }
-
- nftl->numvunits = le32_to_cpu(mh->FormattedSize) / nftl->EraseSize;
- if (nftl->numvunits > (nftl->nb_blocks - nftl->nb_boot_blocks - 2)) {
- printf ("NFTL Media Header sanity check failed:\n"
- "numvunits (%d) > nb_blocks (%d) - nb_boot_blocks(%d) - 2\n",
- nftl->numvunits,
- nftl->nb_blocks,
- nftl->nb_boot_blocks);
- return -1;
- }
-
- nftl->nr_sects = nftl->numvunits * (nftl->EraseSize / SECTORSIZE);
-
- /* If we're not using the last sectors in the device for some reason,
- reduce nb_blocks accordingly so we forget they're there */
- nftl->nb_blocks = le16_to_cpu(mh->NumEraseUnits) + le16_to_cpu(mh->FirstPhysicalEUN);
-
- /* read the Bad Erase Unit Table and modify ReplUnitTable[] accordingly */
- for (i = 0; i < nftl->nb_blocks; i++) {
- if ((i & (SECTORSIZE - 1)) == 0) {
- /* read one sector for every SECTORSIZE of blocks */
- if ((ret = doc_read_ecc(nftl->mtd, block * nftl->EraseSize +
- i + SECTORSIZE, SECTORSIZE,
- (size_t *)&retlen, buf, (uchar *)&oob)) < 0) {
- puts ("Read of bad sector table failed\n");
- return -1;
- }
- }
- /* mark the Bad Erase Unit as RESERVED in ReplUnitTable */
- if (buf[i & (SECTORSIZE - 1)] != 0xff)
- nftl->ReplUnitTable[i] = BLOCK_RESERVED;
- }
-
- nftl->MediaUnit = block;
- boot_record_count++;
-
- } /* foreach (block) */
-
- return boot_record_count?0:-1;
-}
-
-/* This routine is made available to other mtd code via
- * inter_module_register. It must only be accessed through
- * inter_module_get which will bump the use count of this module. The
- * addresses passed back in mtd are valid as long as the use count of
- * this module is non-zero, i.e. between inter_module_get and
- * inter_module_put. Keith Owens <kaos@ocs.com.au> 29 Oct 2000.
- */
-static void DoC2k_init(struct DiskOnChip* this)
-{
- struct NFTLrecord *nftl;
-
- switch (this->ChipID) {
- case DOC_ChipID_Doc2k:
- this->name = "DiskOnChip 2000";
- this->ioreg = DoC_2k_CDSN_IO;
- break;
- case DOC_ChipID_DocMil:
- this->name = "DiskOnChip Millennium";
- this->ioreg = DoC_Mil_CDSN_IO;
- break;
- }
-
-#ifdef DOC_DEBUG
- printf("%s found at address 0x%lX\n", this->name,
- this->physadr);
-#endif
-
- this->totlen = 0;
- this->numchips = 0;
-
- this->curfloor = -1;
- this->curchip = -1;
-
- /* Ident all the chips present. */
- DoC_ScanChips(this);
- if ((!this->numchips) || (!this->chips))
- return;
-
- nftl = &this->nftl;
-
- /* Get physical parameters */
- nftl->EraseSize = this->erasesize;
- nftl->nb_blocks = this->totlen / this->erasesize;
- nftl->mtd = this;
-
- if (find_boot_record(nftl) != 0)
- this->nftl_found = 0;
- else
- this->nftl_found = 1;
-
- printf("%s @ 0x%lX, %ld MB\n", this->name, this->physadr, this->totlen >> 20);
-}
-
-int doc_read_ecc(struct DiskOnChip* this, loff_t from, size_t len,
- size_t * retlen, u_char * buf, u_char * eccbuf)
-{
- unsigned long docptr;
- struct Nand *mychip;
- unsigned char syndrome[6];
- volatile char dummy;
- int i, len256 = 0, ret=0;
-
- docptr = this->virtadr;
-
- /* Don't allow read past end of device */
- if (from >= this->totlen) {
- puts ("Out of flash\n");
- return DOC_EINVAL;
- }
-
- /* Don't allow a single read to cross a 512-byte block boundary */
- if (from + len > ((from | 0x1ff) + 1))
- len = ((from | 0x1ff) + 1) - from;
-
- /* The ECC will not be calculated correctly if less than 512 is read */
- if (len != 0x200 && eccbuf)
- printf("ECC needs a full sector read (adr: %lx size %lx)\n",
- (long) from, (long) len);
-
-#ifdef PSYCHO_DEBUG
- printf("DoC_Read (adr: %lx size %lx)\n", (long) from, (long) len);
-#endif
-
- /* Find the chip which is to be used and select it */
- mychip = &this->chips[shr(from, this->chipshift)];
-
- if (this->curfloor != mychip->floor) {
- DoC_SelectFloor(this, mychip->floor);
- DoC_SelectChip(this, mychip->chip);
- } else if (this->curchip != mychip->chip) {
- DoC_SelectChip(this, mychip->chip);
- }
-
- this->curfloor = mychip->floor;
- this->curchip = mychip->chip;
-
- DoC_Command(this,
- (!this->page256
- && (from & 0x100)) ? NAND_CMD_READ1 : NAND_CMD_READ0,
- CDSN_CTRL_WP);
- DoC_Address(this, ADDR_COLUMN_PAGE, from, CDSN_CTRL_WP,
- CDSN_CTRL_ECC_IO);
-
- if (eccbuf) {
- /* Prime the ECC engine */
- WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
- WriteDOC(DOC_ECC_EN, docptr, ECCConf);
- } else {
- /* disable the ECC engine */
- WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
- WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
- }
-
- /* treat crossing 256-byte sector for 2M x 8bits devices */
- if (this->page256 && from + len > (from | 0xff) + 1) {
- len256 = (from | 0xff) + 1 - from;
- DoC_ReadBuf(this, buf, len256);
-
- DoC_Command(this, NAND_CMD_READ0, CDSN_CTRL_WP);
- DoC_Address(this, ADDR_COLUMN_PAGE, from + len256,
- CDSN_CTRL_WP, CDSN_CTRL_ECC_IO);
- }
-
- DoC_ReadBuf(this, &buf[len256], len - len256);
-
- /* Let the caller know we completed it */
- *retlen = len;
-
- if (eccbuf) {
- /* Read the ECC data through the DiskOnChip ECC logic */
- /* Note: this will work even with 2M x 8bit devices as */
- /* they have 8 bytes of OOB per 256 page. mf. */
- DoC_ReadBuf(this, eccbuf, 6);
-
- /* Flush the pipeline */
- if (DoC_is_Millennium(this)) {
- dummy = ReadDOC(docptr, ECCConf);
- dummy = ReadDOC(docptr, ECCConf);
- i = ReadDOC(docptr, ECCConf);
- } else {
- dummy = ReadDOC(docptr, 2k_ECCStatus);
- dummy = ReadDOC(docptr, 2k_ECCStatus);
- i = ReadDOC(docptr, 2k_ECCStatus);
- }
-
- /* Check the ECC Status */
- if (i & 0x80) {
- int nb_errors;
- /* There was an ECC error */
-#ifdef ECC_DEBUG
- printf("DiskOnChip ECC Error: Read at %lx\n", (long)from);
-#endif
- /* Read the ECC syndrom through the DiskOnChip ECC logic.
- These syndrome will be all ZERO when there is no error */
- for (i = 0; i < 6; i++) {
- syndrome[i] =
- ReadDOC(docptr, ECCSyndrome0 + i);
- }
- nb_errors = doc_decode_ecc(buf, syndrome);
-
-#ifdef ECC_DEBUG
- printf("Errors corrected: %x\n", nb_errors);
-#endif
- if (nb_errors < 0) {
- /* We return error, but have actually done the read. Not that
- this can be told to user-space, via sys_read(), but at least
- MTD-aware stuff can know about it by checking *retlen */
- printf("ECC Errors at %lx\n", (long)from);
- ret = DOC_EECC;
- }
- }
-
-#ifdef PSYCHO_DEBUG
- printf("ECC DATA at %lxB: %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
- (long)from, eccbuf[0], eccbuf[1], eccbuf[2],
- eccbuf[3], eccbuf[4], eccbuf[5]);
-#endif
-
- /* disable the ECC engine */
- WriteDOC(DOC_ECC_DIS, docptr , ECCConf);
- }
-
- /* according to 11.4.1, we need to wait for the busy line
- * drop if we read to the end of the page. */
- if(0 == ((from + *retlen) & 0x1ff))
- {
- DoC_WaitReady(this);
- }
-
- return ret;
-}
-
-int doc_write_ecc(struct DiskOnChip* this, loff_t to, size_t len,
- size_t * retlen, const u_char * buf,
- u_char * eccbuf)
-{
- int di; /* Yes, DI is a hangover from when I was disassembling the binary driver */
- unsigned long docptr;
- volatile char dummy;
- int len256 = 0;
- struct Nand *mychip;
-
- docptr = this->virtadr;
-
- /* Don't allow write past end of device */
- if (to >= this->totlen) {
- puts ("Out of flash\n");
- return DOC_EINVAL;
- }
-
- /* Don't allow a single write to cross a 512-byte block boundary */
- if (to + len > ((to | 0x1ff) + 1))
- len = ((to | 0x1ff) + 1) - to;
-
- /* The ECC will not be calculated correctly if less than 512 is written */
- if (len != 0x200 && eccbuf)
- printf("ECC needs a full sector write (adr: %lx size %lx)\n",
- (long) to, (long) len);
-
- /* printf("DoC_Write (adr: %lx size %lx)\n", (long) to, (long) len); */
-
- /* Find the chip which is to be used and select it */
- mychip = &this->chips[shr(to, this->chipshift)];
-
- if (this->curfloor != mychip->floor) {
- DoC_SelectFloor(this, mychip->floor);
- DoC_SelectChip(this, mychip->chip);
- } else if (this->curchip != mychip->chip) {
- DoC_SelectChip(this, mychip->chip);
- }
-
- this->curfloor = mychip->floor;
- this->curchip = mychip->chip;
-
- /* Set device to main plane of flash */
- DoC_Command(this, NAND_CMD_RESET, CDSN_CTRL_WP);
- DoC_Command(this,
- (!this->page256
- && (to & 0x100)) ? NAND_CMD_READ1 : NAND_CMD_READ0,
- CDSN_CTRL_WP);
-
- DoC_Command(this, NAND_CMD_SEQIN, 0);
- DoC_Address(this, ADDR_COLUMN_PAGE, to, 0, CDSN_CTRL_ECC_IO);
-
- if (eccbuf) {
- /* Prime the ECC engine */
- WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
- WriteDOC(DOC_ECC_EN | DOC_ECC_RW, docptr, ECCConf);
- } else {
- /* disable the ECC engine */
- WriteDOC(DOC_ECC_RESET, docptr, ECCConf);
- WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
- }
-
- /* treat crossing 256-byte sector for 2M x 8bits devices */
- if (this->page256 && to + len > (to | 0xff) + 1) {
- len256 = (to | 0xff) + 1 - to;
- DoC_WriteBuf(this, buf, len256);
-
- DoC_Command(this, NAND_CMD_PAGEPROG, 0);
-
- DoC_Command(this, NAND_CMD_STATUS, CDSN_CTRL_WP);
- /* There's an implicit DoC_WaitReady() in DoC_Command */
-
- dummy = ReadDOC(docptr, CDSNSlowIO);
- DoC_Delay(this, 2);
-
- if (ReadDOC_(docptr, this->ioreg) & 1) {
- puts ("Error programming flash\n");
- /* Error in programming */
- *retlen = 0;
- return DOC_EIO;
- }
-
- DoC_Command(this, NAND_CMD_SEQIN, 0);
- DoC_Address(this, ADDR_COLUMN_PAGE, to + len256, 0,
- CDSN_CTRL_ECC_IO);
- }
-
- DoC_WriteBuf(this, &buf[len256], len - len256);
-
- if (eccbuf) {
- WriteDOC(CDSN_CTRL_ECC_IO | CDSN_CTRL_CE, docptr,
- CDSNControl);
-
- if (DoC_is_Millennium(this)) {
- WriteDOC(0, docptr, NOP);
- WriteDOC(0, docptr, NOP);
- WriteDOC(0, docptr, NOP);
- } else {
- WriteDOC_(0, docptr, this->ioreg);
- WriteDOC_(0, docptr, this->ioreg);
- WriteDOC_(0, docptr, this->ioreg);
- }
-
- /* Read the ECC data through the DiskOnChip ECC logic */
- for (di = 0; di < 6; di++) {
- eccbuf[di] = ReadDOC(docptr, ECCSyndrome0 + di);
- }
-
- /* Reset the ECC engine */
- WriteDOC(DOC_ECC_DIS, docptr, ECCConf);
-
-#ifdef PSYCHO_DEBUG
- printf
- ("OOB data at %lx is %2.2X %2.2X %2.2X %2.2X %2.2X %2.2X\n",
- (long) to, eccbuf[0], eccbuf[1], eccbuf[2], eccbuf[3],
- eccbuf[4], eccbuf[5]);
-#endif
- }
-
- DoC_Command(this, NAND_CMD_PAGEPROG, 0);
-
- DoC_Command(this, NAND_CMD_STATUS, CDSN_CTRL_WP);
- /* There's an implicit DoC_WaitReady() in DoC_Command */
-
- dummy = ReadDOC(docptr, CDSNSlowIO);
- DoC_Delay(this, 2);
-
- if (ReadDOC_(docptr, this->ioreg) & 1) {
- puts ("Error programming flash\n");
- /* Error in programming */
- *retlen = 0;
- return DOC_EIO;
- }
-
- /* Let the caller know we completed it */
- *retlen = len;
-
- if (eccbuf) {
- unsigned char x[8];
- size_t dummy;
- int ret;
-
- /* Write the ECC data to flash */
- for (di=0; di<6; di++)
- x[di] = eccbuf[di];
-
- x[6]=0x55;
- x[7]=0x55;
-
- ret = doc_write_oob(this, to, 8, &dummy, x);
- return ret;
- }
- return 0;
-}
-
-int doc_read_oob(struct DiskOnChip* this, loff_t ofs, size_t len,
- size_t * retlen, u_char * buf)
-{
- int len256 = 0, ret;
- unsigned long docptr;
- struct Nand *mychip;
-
- docptr = this->virtadr;
-
- mychip = &this->chips[shr(ofs, this->chipshift)];
-
- if (this->curfloor != mychip->floor) {
- DoC_SelectFloor(this, mychip->floor);
- DoC_SelectChip(this, mychip->chip);
- } else if (this->curchip != mychip->chip) {
- DoC_SelectChip(this, mychip->chip);
- }
- this->curfloor = mychip->floor;
- this->curchip = mychip->chip;
-
- /* update address for 2M x 8bit devices. OOB starts on the second */
- /* page to maintain compatibility with doc_read_ecc. */
- if (this->page256) {
- if (!(ofs & 0x8))
- ofs += 0x100;
- else
- ofs -= 0x8;
- }
-
- DoC_Command(this, NAND_CMD_READOOB, CDSN_CTRL_WP);
- DoC_Address(this, ADDR_COLUMN_PAGE, ofs, CDSN_CTRL_WP, 0);
-
- /* treat crossing 8-byte OOB data for 2M x 8bit devices */
- /* Note: datasheet says it should automaticaly wrap to the */
- /* next OOB block, but it didn't work here. mf. */
- if (this->page256 && ofs + len > (ofs | 0x7) + 1) {
- len256 = (ofs | 0x7) + 1 - ofs;
- DoC_ReadBuf(this, buf, len256);
-
- DoC_Command(this, NAND_CMD_READOOB, CDSN_CTRL_WP);
- DoC_Address(this, ADDR_COLUMN_PAGE, ofs & (~0x1ff),
- CDSN_CTRL_WP, 0);
- }
-
- DoC_ReadBuf(this, &buf[len256], len - len256);
-
- *retlen = len;
- /* Reading the full OOB data drops us off of the end of the page,
- * causing the flash device to go into busy mode, so we need
- * to wait until ready 11.4.1 and Toshiba TC58256FT docs */
-
- ret = DoC_WaitReady(this);
-
- return ret;
-
-}
-
-int doc_write_oob(struct DiskOnChip* this, loff_t ofs, size_t len,
- size_t * retlen, const u_char * buf)
-{
- int len256 = 0;
- unsigned long docptr = this->virtadr;
- struct Nand *mychip = &this->chips[shr(ofs, this->chipshift)];
- volatile int dummy;
-
-#ifdef PSYCHO_DEBUG
- printf("doc_write_oob(%lx, %d): %2.2X %2.2X %2.2X %2.2X ... %2.2X %2.2X .. %2.2X %2.2X\n",
- (long)ofs, len, buf[0], buf[1], buf[2], buf[3],
- buf[8], buf[9], buf[14],buf[15]);
-#endif
-
- /* Find the chip which is to be used and select it */
- if (this->curfloor != mychip->floor) {
- DoC_SelectFloor(this, mychip->floor);
- DoC_SelectChip(this, mychip->chip);
- } else if (this->curchip != mychip->chip) {
- DoC_SelectChip(this, mychip->chip);
- }
- this->curfloor = mychip->floor;
- this->curchip = mychip->chip;
-
- /* disable the ECC engine */
- WriteDOC (DOC_ECC_RESET, docptr, ECCConf);
- WriteDOC (DOC_ECC_DIS, docptr, ECCConf);
-
- /* Reset the chip, see Software Requirement 11.4 item 1. */
- DoC_Command(this, NAND_CMD_RESET, CDSN_CTRL_WP);
-
- /* issue the Read2 command to set the pointer to the Spare Data Area. */
- DoC_Command(this, NAND_CMD_READOOB, CDSN_CTRL_WP);
-
- /* update address for 2M x 8bit devices. OOB starts on the second */
- /* page to maintain compatibility with doc_read_ecc. */
- if (this->page256) {
- if (!(ofs & 0x8))
- ofs += 0x100;
- else
- ofs -= 0x8;
- }
-
- /* issue the Serial Data In command to initial the Page Program process */
- DoC_Command(this, NAND_CMD_SEQIN, 0);
- DoC_Address(this, ADDR_COLUMN_PAGE, ofs, 0, 0);
-
- /* treat crossing 8-byte OOB data for 2M x 8bit devices */
- /* Note: datasheet says it should automaticaly wrap to the */
- /* next OOB block, but it didn't work here. mf. */
- if (this->page256 && ofs + len > (ofs | 0x7) + 1) {
- len256 = (ofs | 0x7) + 1 - ofs;
- DoC_WriteBuf(this, buf, len256);
-
- DoC_Command(this, NAND_CMD_PAGEPROG, 0);
- DoC_Command(this, NAND_CMD_STATUS, 0);
- /* DoC_WaitReady() is implicit in DoC_Command */
-
- dummy = ReadDOC(docptr, CDSNSlowIO);
- DoC_Delay(this, 2);
-
- if (ReadDOC_(docptr, this->ioreg) & 1) {
- puts ("Error programming oob data\n");
- /* There was an error */
- *retlen = 0;
- return DOC_EIO;
- }
- DoC_Command(this, NAND_CMD_SEQIN, 0);
- DoC_Address(this, ADDR_COLUMN_PAGE, ofs & (~0x1ff), 0, 0);
- }
-
- DoC_WriteBuf(this, &buf[len256], len - len256);
-
- DoC_Command(this, NAND_CMD_PAGEPROG, 0);
- DoC_Command(this, NAND_CMD_STATUS, 0);
- /* DoC_WaitReady() is implicit in DoC_Command */
-
- dummy = ReadDOC(docptr, CDSNSlowIO);
- DoC_Delay(this, 2);
-
- if (ReadDOC_(docptr, this->ioreg) & 1) {
- puts ("Error programming oob data\n");
- /* There was an error */
- *retlen = 0;
- return DOC_EIO;
- }
-
- *retlen = len;
- return 0;
-
-}
-
-int doc_erase(struct DiskOnChip* this, loff_t ofs, size_t len)
-{
- volatile int dummy;
- unsigned long docptr;
- struct Nand *mychip;
-
- if (ofs & (this->erasesize-1) || len & (this->erasesize-1)) {
- puts ("Offset and size must be sector aligned\n");
- return DOC_EINVAL;
- }
-
- docptr = this->virtadr;
-
- /* FIXME: Do this in the background. Use timers or schedule_task() */
- while(len) {
- mychip = &this->chips[shr(ofs, this->chipshift)];
-
- if (this->curfloor != mychip->floor) {
- DoC_SelectFloor(this, mychip->floor);
- DoC_SelectChip(this, mychip->chip);
- } else if (this->curchip != mychip->chip) {
- DoC_SelectChip(this, mychip->chip);
- }
- this->curfloor = mychip->floor;
- this->curchip = mychip->chip;
-
- DoC_Command(this, NAND_CMD_ERASE1, 0);
- DoC_Address(this, ADDR_PAGE, ofs, 0, 0);
- DoC_Command(this, NAND_CMD_ERASE2, 0);
-
- DoC_Command(this, NAND_CMD_STATUS, CDSN_CTRL_WP);
-
- dummy = ReadDOC(docptr, CDSNSlowIO);
- DoC_Delay(this, 2);
-
- if (ReadDOC_(docptr, this->ioreg) & 1) {
- printf("Error erasing at 0x%lx\n", (long)ofs);
- /* There was an error */
- goto callback;
- }
- ofs += this->erasesize;
- len -= this->erasesize;
- }
-
- callback:
- return 0;
-}
-
-static inline int doccheck(unsigned long potential, unsigned long physadr)
-{
- unsigned long window=potential;
- unsigned char tmp, ChipID;
-#ifndef DOC_PASSIVE_PROBE
- unsigned char tmp2;
-#endif
-
- /* Routine copied from the Linux DOC driver */
-
-#ifdef CONFIG_SYS_DOCPROBE_55AA
- /* Check for 0x55 0xAA signature at beginning of window,
- this is no longer true once we remove the IPL (for Millennium */
- if (ReadDOC(window, Sig1) != 0x55 || ReadDOC(window, Sig2) != 0xaa)
- return 0;
-#endif /* CONFIG_SYS_DOCPROBE_55AA */
-
-#ifndef DOC_PASSIVE_PROBE
- /* It's not possible to cleanly detect the DiskOnChip - the
- * bootup procedure will put the device into reset mode, and
- * it's not possible to talk to it without actually writing
- * to the DOCControl register. So we store the current contents
- * of the DOCControl register's location, in case we later decide
- * that it's not a DiskOnChip, and want to put it back how we
- * found it.
- */
- tmp2 = ReadDOC(window, DOCControl);
-
- /* Reset the DiskOnChip ASIC */
- WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET,
- window, DOCControl);
- WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_RESET,
- window, DOCControl);
-
- /* Enable the DiskOnChip ASIC */
- WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL,
- window, DOCControl);
- WriteDOC(DOC_MODE_CLR_ERR | DOC_MODE_MDWREN | DOC_MODE_NORMAL,
- window, DOCControl);
-#endif /* !DOC_PASSIVE_PROBE */
-
- ChipID = ReadDOC(window, ChipID);
-
- switch (ChipID) {
- case DOC_ChipID_Doc2k:
- /* Check the TOGGLE bit in the ECC register */
- tmp = ReadDOC(window, 2k_ECCStatus) & DOC_TOGGLE_BIT;
- if ((ReadDOC(window, 2k_ECCStatus) & DOC_TOGGLE_BIT) != tmp)
- return ChipID;
- break;
-
- case DOC_ChipID_DocMil:
- /* Check the TOGGLE bit in the ECC register */
- tmp = ReadDOC(window, ECCConf) & DOC_TOGGLE_BIT;
- if ((ReadDOC(window, ECCConf) & DOC_TOGGLE_BIT) != tmp)
- return ChipID;
- break;
-
- default:
-#ifndef CONFIG_SYS_DOCPROBE_55AA
-/*
- * if the ID isn't the DoC2000 or DoCMillenium ID, so we can assume
- * the DOC is missing
- */
-# if 0
- printf("Possible DiskOnChip with unknown ChipID %2.2X found at 0x%lx\n",
- ChipID, physadr);
-# endif
-#endif
-#ifndef DOC_PASSIVE_PROBE
- /* Put back the contents of the DOCControl register, in case it's not
- * actually a DiskOnChip.
- */
- WriteDOC(tmp2, window, DOCControl);
-#endif
- return 0;
- }
-
- puts ("DiskOnChip failed TOGGLE test, dropping.\n");
-
-#ifndef DOC_PASSIVE_PROBE
- /* Put back the contents of the DOCControl register: it's not a DiskOnChip */
- WriteDOC(tmp2, window, DOCControl);
-#endif
- return 0;
-}
-
-void doc_probe(unsigned long physadr)
-{
- struct DiskOnChip *this = NULL;
- int i=0, ChipID;
-
- if ((ChipID = doccheck(physadr, physadr))) {
-
- for (i=0; i<CONFIG_SYS_MAX_DOC_DEVICE; i++) {
- if (doc_dev_desc[i].ChipID == DOC_ChipID_UNKNOWN) {
- this = doc_dev_desc + i;
- break;
- }
- }
-
- if (!this) {
- puts ("Cannot allocate memory for data structures.\n");
- return;
- }
-
- if (curr_device == -1)
- curr_device = i;
-
- memset((char *)this, 0, sizeof(struct DiskOnChip));
-
- this->virtadr = physadr;
- this->physadr = physadr;
- this->ChipID = ChipID;
-
- DoC2k_init(this);
- } else {
- puts ("No DiskOnChip found\n");
- }
-}
-#else
-void doc_probe(unsigned long physadr) {}
-#endif