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Tom Rini83d290c2018-05-06 17:58:06 -04001// SPDX-License-Identifier: GPL-2.0+
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +09002/*
Wolfgang Denkea882ba2010-06-20 23:33:59 +02003 * (C) Copyright 2010 DENX Software Engineering
4 * Wolfgang Denk <wd@denx.de>
5 *
Kyungmin Park937076f2009-07-11 16:49:55 +09006 * (C) Copyright 2005-2009 Samsung Electronics
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +09007 * Kyungmin Park <kyungmin.park@samsung.com>
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +09008 */
9
10#include <common.h>
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090011#include <command.h>
12#include <environment.h>
13#include <linux/stddef.h>
14#include <malloc.h>
Wolfgang Denkea882ba2010-06-20 23:33:59 +020015#include <search.h>
16#include <errno.h>
Igor Grinbergb919ec22011-11-07 01:14:03 +000017#include <onenand_uboot.h>
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090018
Mike Frysinger7b15e2b2012-04-09 13:39:55 +000019#include <linux/compat.h>
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090020#include <linux/mtd/mtd.h>
21#include <linux/mtd/onenand.h>
22
David du Colombier034afbc2012-06-13 23:24:35 +020023#define ONENAND_MAX_ENV_SIZE CONFIG_ENV_SIZE
Kyungmin Park937076f2009-07-11 16:49:55 +090024#define ONENAND_ENV_SIZE(mtd) (ONENAND_MAX_ENV_SIZE - ENV_HEADER_SIZE)
25
Kyungmin Parka9da2b42008-03-31 10:40:19 +090026DECLARE_GLOBAL_DATA_PTR;
27
Simon Glassc5951992017-08-03 12:22:17 -060028static int env_onenand_load(void)
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090029{
Kyungmin Park937076f2009-07-11 16:49:55 +090030 struct mtd_info *mtd = &onenand_mtd;
Sanjeev Premib821cea2009-12-18 14:55:24 +053031#ifdef CONFIG_ENV_ADDR_FLEX
Amul Kumar Sahac758e942009-11-04 10:38:46 +053032 struct onenand_chip *this = &onenand_chip;
Sanjeev Premib821cea2009-12-18 14:55:24 +053033#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +020034 int rc;
Peter Pearse2ae64f52007-11-15 08:58:00 +000035 size_t retlen;
Wolfgang Denkea882ba2010-06-20 23:33:59 +020036#ifdef ENV_IS_EMBEDDED
Igor Grinberg994bc672011-11-17 06:07:23 +000037 char *buf = (char *)&environment;
Wolfgang Denkea882ba2010-06-20 23:33:59 +020038#else
39 loff_t env_addr = CONFIG_ENV_ADDR;
Tom Rinicd0f4fa2013-04-05 14:55:21 -040040 char onenand_env[ONENAND_MAX_ENV_SIZE];
41 char *buf = (char *)&onenand_env[0];
Wolfgang Denkea882ba2010-06-20 23:33:59 +020042#endif /* ENV_IS_EMBEDDED */
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090043
Wolfgang Denkea882ba2010-06-20 23:33:59 +020044#ifndef ENV_IS_EMBEDDED
45# ifdef CONFIG_ENV_ADDR_FLEX
Amul Kumar Sahac758e942009-11-04 10:38:46 +053046 if (FLEXONENAND(this))
47 env_addr = CONFIG_ENV_ADDR_FLEX;
Wolfgang Denkea882ba2010-06-20 23:33:59 +020048# endif
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090049 /* Check OneNAND exist */
Kyungmin Park937076f2009-07-11 16:49:55 +090050 if (mtd->writesize)
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090051 /* Ignore read fail */
Sergey Lapindfe64e22013-01-14 03:46:50 +000052 mtd_read(mtd, env_addr, ONENAND_MAX_ENV_SIZE,
Igor Grinbergb919ec22011-11-07 01:14:03 +000053 &retlen, (u_char *)buf);
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090054 else
Kyungmin Park937076f2009-07-11 16:49:55 +090055 mtd->writesize = MAX_ONENAND_PAGESIZE;
Wolfgang Denkea882ba2010-06-20 23:33:59 +020056#endif /* !ENV_IS_EMBEDDED */
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090057
Wolfgang Denkea882ba2010-06-20 23:33:59 +020058 rc = env_import(buf, 1);
Simon Goldschmidt42a18202018-01-31 14:47:10 +010059 if (!rc)
Simon Glass203e94f2017-08-03 12:21:56 -060060 gd->env_valid = ENV_VALID;
Simon Glassc5951992017-08-03 12:22:17 -060061
Simon Goldschmidt42a18202018-01-31 14:47:10 +010062 return rc;
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090063}
64
Simon Glasse5bce242017-08-03 12:22:01 -060065static int env_onenand_save(void)
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090066{
Tom Rinicd0f4fa2013-04-05 14:55:21 -040067 env_t env_new;
Marek Vasut7ce15262014-03-05 19:59:50 +010068 int ret;
Kyungmin Park937076f2009-07-11 16:49:55 +090069 struct mtd_info *mtd = &onenand_mtd;
Sanjeev Premib821cea2009-12-18 14:55:24 +053070#ifdef CONFIG_ENV_ADDR_FLEX
Amul Kumar Sahac758e942009-11-04 10:38:46 +053071 struct onenand_chip *this = &onenand_chip;
Sanjeev Premib821cea2009-12-18 14:55:24 +053072#endif
Wolfgang Denkea882ba2010-06-20 23:33:59 +020073 loff_t env_addr = CONFIG_ENV_ADDR;
74 size_t retlen;
Kyungmin Parka9da2b42008-03-31 10:40:19 +090075 struct erase_info instr = {
76 .callback = NULL,
77 };
Wolfgang Denkea882ba2010-06-20 23:33:59 +020078
Marek Vasut7ce15262014-03-05 19:59:50 +010079 ret = env_export(&env_new);
80 if (ret)
81 return ret;
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090082
Jean-Christophe PLAGNIOL-VILLARD0e8d1582008-09-10 22:48:06 +020083 instr.len = CONFIG_ENV_SIZE;
Sanjeev Premib821cea2009-12-18 14:55:24 +053084#ifdef CONFIG_ENV_ADDR_FLEX
Amul Kumar Sahac758e942009-11-04 10:38:46 +053085 if (FLEXONENAND(this)) {
86 env_addr = CONFIG_ENV_ADDR_FLEX;
87 instr.len = CONFIG_ENV_SIZE_FLEX;
88 instr.len <<= onenand_mtd.eraseregions[0].numblocks == 1 ?
89 1 : 0;
90 }
Sanjeev Premib821cea2009-12-18 14:55:24 +053091#endif
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090092 instr.addr = env_addr;
Kyungmin Park937076f2009-07-11 16:49:55 +090093 instr.mtd = mtd;
Sergey Lapindfe64e22013-01-14 03:46:50 +000094 if (mtd_erase(mtd, &instr)) {
Kyungmin Park48287792009-07-20 09:47:47 +090095 printf("OneNAND: erase failed at 0x%08llx\n", env_addr);
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +090096 return 1;
97 }
98
Sergey Lapindfe64e22013-01-14 03:46:50 +000099 if (mtd_write(mtd, env_addr, ONENAND_MAX_ENV_SIZE, &retlen,
Tom Rinicd0f4fa2013-04-05 14:55:21 -0400100 (u_char *)&env_new)) {
Stefan Roese8d2effe2009-05-11 16:03:55 +0200101 printf("OneNAND: write failed at 0x%llx\n", instr.addr);
Kyungmin Parkd7e8ce12007-09-10 17:15:14 +0900102 return 2;
103 }
104
105 return 0;
106}
107
Simon Glass4415f1d2017-08-03 12:21:58 -0600108U_BOOT_ENV_LOCATION(onenand) = {
109 .location = ENVL_ONENAND,
Simon Glassac358be2017-08-03 12:22:03 -0600110 ENV_NAME("OneNAND")
Simon Glasse5bce242017-08-03 12:22:01 -0600111 .load = env_onenand_load,
112 .save = env_save_ptr(env_onenand_save),
Simon Glass4415f1d2017-08-03 12:21:58 -0600113};