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https://github.com/AsahiLinux/u-boot
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d7e8ce101a
[PATCH 3/3] OneNAND support (take #2) OneNAND support at U-Boot Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
155 lines
3.7 KiB
C
155 lines
3.7 KiB
C
/*
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* U-Boot command for OneNAND support
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*
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* Copyright (C) 2005-2007 Samsung Electronics
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* Kyungmin Park <kyungmin.park@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <common.h>
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#include <command.h>
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#ifdef CONFIG_CMD_ONENAND
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#include <linux/mtd/compat.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/onenand.h>
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#include <asm/io.h>
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extern struct mtd_info onenand_mtd;
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extern struct onenand_chip onenand_chip;
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int do_onenand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
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{
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int ret = 0;
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switch (argc) {
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case 0:
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case 1:
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printf("Usage:\n%s\n", cmdtp->usage);
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return 1;
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case 2:
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if (strncmp(argv[1], "open", 4) == 0) {
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onenand_init();
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return 0;
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}
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onenand_print_device_info(onenand_chip.device_id, 1);
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return 0;
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default:
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/* At least 4 args */
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if (strncmp(argv[1], "erase", 5) == 0) {
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struct erase_info instr;
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ulong start, end;
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ulong block;
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start = simple_strtoul(argv[2], NULL, 10);
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end = simple_strtoul(argv[3], NULL, 10);
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start -= (unsigned long)onenand_chip.base;
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end -= (unsigned long)onenand_chip.base;
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if (!end || end < 0)
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end = start;
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printf("Erase block from %d to %d\n", start, end);
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for (block = start; block <= end; block++) {
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instr.addr = block << onenand_chip.erase_shift;
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instr.len = 1 << onenand_chip.erase_shift;
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ret = onenand_erase(&onenand_mtd, &instr);
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if (ret) {
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printf("erase failed %d\n", block);
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break;
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}
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}
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return 0;
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}
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if (strncmp(argv[1], "read", 4) == 0) {
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ulong addr = simple_strtoul(argv[2], NULL, 16);
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ulong ofs = simple_strtoul(argv[3], NULL, 16);
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size_t len = simple_strtoul(argv[4], NULL, 16);
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size_t retlen = 0;
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int oob = strncmp(argv[1], "read.oob", 8) ? 0 : 1;
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ofs -= (unsigned long)onenand_chip.base;
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if (oob)
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onenand_read_oob(&onenand_mtd, ofs, len,
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&retlen, (u_char *) addr);
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else
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onenand_read(&onenand_mtd, ofs, len, &retlen,
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(u_char *) addr);
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printf("Done\n");
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return 0;
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}
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if (strncmp(argv[1], "write", 5) == 0) {
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ulong addr = simple_strtoul(argv[2], NULL, 16);
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ulong ofs = simple_strtoul(argv[3], NULL, 16);
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size_t len = simple_strtoul(argv[4], NULL, 16);
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size_t retlen = 0;
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ofs -= (unsigned long)onenand_chip.base;
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onenand_write(&onenand_mtd, ofs, len, &retlen,
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(u_char *) addr);
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printf("Done\n");
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return 0;
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}
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if (strncmp(argv[1], "block", 5) == 0) {
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ulong addr = simple_strtoul(argv[2], NULL, 16);
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ulong block = simple_strtoul(argv[3], NULL, 10);
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ulong page = simple_strtoul(argv[4], NULL, 10);
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size_t len = simple_strtol(argv[5], NULL, 10);
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size_t retlen = 0;
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ulong ofs;
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int oob = strncmp(argv[1], "block.oob", 9) ? 0 : 1;
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ofs = block << onenand_chip.erase_shift;
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if (page)
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ofs += page << onenand_chip.page_shift;
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if (!len) {
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if (oob)
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len = 64;
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else
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len = 512;
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}
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if (oob)
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onenand_read_oob(&onenand_mtd, ofs, len,
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&retlen, (u_char *) addr);
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else
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onenand_read(&onenand_mtd, ofs, len, &retlen,
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(u_char *) addr);
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return 0;
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}
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break;
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}
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return 0;
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}
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U_BOOT_CMD(
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onenand, 6, 1, do_onenand,
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"onenand - OneNAND sub-system\n",
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"info - show available OneNAND devices\n"
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"onenand read[.oob] addr ofs len - read data at ofs with len to addr\n"
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"onenand write addr ofs len - write data at ofs with len from addr\n"
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"onenand erase saddr eaddr - erase block start addr to end addr\n"
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"onenand block[.oob] addr block [page] [len] - "
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"read data with (block [, page]) to addr"
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);
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#endif /* CONFIG_CMD_ONENAND */
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