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