diff options
Diffstat (limited to 'common/cmd_onenand.c')
| -rw-r--r-- | common/cmd_onenand.c | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/common/cmd_onenand.c b/common/cmd_onenand.c new file mode 100644 index 0000000..dcda099 --- /dev/null +++ b/common/cmd_onenand.c @@ -0,0 +1,155 @@ +/* + * 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 */ |