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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 | /* * (C) Copyright 2005-2007 Samsung Electronics * Kyungmin Park <kyungmin.park@samsung.com> * * See file CREDITS for list of people who contributed to this * project. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License as * published by the Free Software Foundation; either version 2 of * the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, * MA 02111-1307 USA */ #include <common.h> #if defined(CFG_ENV_IS_IN_ONENAND) /* Environment is in OneNAND */ #include <command.h> #include <environment.h> #include <linux/stddef.h> #include <malloc.h> #include <linux/mtd/compat.h> #include <linux/mtd/mtd.h> #include <linux/mtd/onenand.h> extern struct mtd_info onenand_mtd; extern struct onenand_chip onenand_chip; /* References to names in env_common.c */ extern uchar default_environment[]; #define ONENAND_ENV_SIZE(mtd) (mtd.oobblock - ENV_HEADER_SIZE) char *env_name_spec = "OneNAND"; #ifdef ENV_IS_EMBEDDED extern uchar environment[]; env_t *env_ptr = (env_t *) (&environment[0]); #else /* ! ENV_IS_EMBEDDED */ static unsigned char onenand_env[MAX_ONENAND_PAGESIZE]; env_t *env_ptr = (env_t *) onenand_env; #endif /* ENV_IS_EMBEDDED */ DECLARE_GLOBAL_DATA_PTR; uchar env_get_char_spec(int index) { return (*((uchar *) (gd->env_addr + index))); } void env_relocate_spec(void) { unsigned long env_addr; int use_default = 0; size_t retlen; env_addr = CFG_ENV_ADDR; /* Check OneNAND exist */ if (onenand_mtd.oobblock) /* Ignore read fail */ onenand_read(&onenand_mtd, env_addr, onenand_mtd.oobblock, &retlen, (u_char *) env_ptr); else onenand_mtd.oobblock = MAX_ONENAND_PAGESIZE; if (crc32(0, env_ptr->data, ONENAND_ENV_SIZE(onenand_mtd)) != env_ptr->crc) use_default = 1; if (use_default) { memcpy(env_ptr->data, default_environment, ONENAND_ENV_SIZE(onenand_mtd)); env_ptr->crc = crc32(0, env_ptr->data, ONENAND_ENV_SIZE(onenand_mtd)); } gd->env_addr = (ulong) & env_ptr->data; gd->env_valid = 1; } int saveenv(void) { unsigned long env_addr = CFG_ENV_ADDR; struct erase_info instr = { .callback = NULL, }; size_t retlen; instr.len = CFG_ENV_SIZE; instr.addr = env_addr; if (onenand_erase(&onenand_mtd, &instr)) { printf("OneNAND: erase failed at 0x%08lx\n", env_addr); return 1; } /* update crc */ env_ptr->crc = crc32(0, env_ptr->data, ONENAND_ENV_SIZE(onenand_mtd)); if (onenand_write(&onenand_mtd, env_addr, onenand_mtd.oobblock, &retlen, (u_char *) env_ptr)) { printf("OneNAND: write failed at 0x%08x\n", instr.addr); return 2; } return 0; } int env_init(void) { /* use default */ gd->env_addr = (ulong) & default_environment[0]; gd->env_valid = 1; return 0; } #endif /* CFG_ENV_IS_IN_ONENAND */ |