diff options
Diffstat (limited to 'README')
| -rw-r--r-- | README | 56 |
1 files changed, 28 insertions, 28 deletions
@@ -2104,7 +2104,7 @@ The following definitions that deal with the placement and management of environment data (variable area); in general, we support the following configurations: -- CFG_ENV_IS_IN_FLASH: +- CONFIG_ENV_IS_IN_FLASH: Define this if the environment is in flash memory. @@ -2120,22 +2120,22 @@ following configurations: environment in one of the last sectors, leaving a gap between U-Boot and the environment. - - CFG_ENV_OFFSET: + - CONFIG_ENV_OFFSET: Offset of environment data (variable area) to the beginning of flash memory; for instance, with bottom boot type flash chips the second sector can be used: the offset for this sector is given here. - CFG_ENV_OFFSET is used relative to CFG_FLASH_BASE. + CONFIG_ENV_OFFSET is used relative to CFG_FLASH_BASE. - - CFG_ENV_ADDR: + - CONFIG_ENV_ADDR: This is just another way to specify the start address of the flash sector containing the environment (instead of - CFG_ENV_OFFSET). + CONFIG_ENV_OFFSET). - - CFG_ENV_SECT_SIZE: + - CONFIG_ENV_SECT_SIZE: Size of the sector containing the environment. @@ -2144,10 +2144,10 @@ following configurations: In such a case you don't want to spend a whole sector for the environment. - - CFG_ENV_SIZE: + - CONFIG_ENV_SIZE: - If you use this in combination with CFG_ENV_IS_IN_FLASH - and CFG_ENV_SECT_SIZE, you can specify to use only a part + If you use this in combination with CONFIG_ENV_IS_IN_FLASH + and CONFIG_ENV_SECT_SIZE, you can specify to use only a part of this flash sector for the environment. This saves memory for the RAM copy of the environment. @@ -2161,8 +2161,8 @@ following configurations: wrong before the contents has been restored from a copy in RAM, your target system will be dead. - - CFG_ENV_ADDR_REDUND - CFG_ENV_SIZE_REDUND + - CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SIZE_REDUND These settings describe a second storage area used to hold a redundant copy of the environment data, so that there is @@ -2174,14 +2174,14 @@ source code will make it necessary to adapt <board>/u-boot.lds* accordingly! -- CFG_ENV_IS_IN_NVRAM: +- CONFIG_ENV_IS_IN_NVRAM: Define this if you have some non-volatile memory device (NVRAM, battery buffered SRAM) which you want to use for the environment. - - CFG_ENV_ADDR: - - CFG_ENV_SIZE: + - CONFIG_ENV_ADDR: + - CONFIG_ENV_SIZE: These two #defines are used to determine the memory area you want to use for environment. It is assumed that this memory @@ -2199,13 +2199,13 @@ keep settings there always unmodified except somebody uses "saveenv" to save the current settings. -- CFG_ENV_IS_IN_EEPROM: +- CONFIG_ENV_IS_IN_EEPROM: Use this if you have an EEPROM or similar serial access device and a driver for it. - - CFG_ENV_OFFSET: - - CFG_ENV_SIZE: + - CONFIG_ENV_OFFSET: + - CONFIG_ENV_SIZE: These two #defines specify the offset and size of the environment area within the total memory of your EEPROM. @@ -2242,39 +2242,39 @@ to save the current settings. The size in bytes of the EEPROM device. -- CFG_ENV_IS_IN_DATAFLASH: +- CONFIG_ENV_IS_IN_DATAFLASH: Define this if you have a DataFlash memory device which you want to use for the environment. - - CFG_ENV_OFFSET: - - CFG_ENV_ADDR: - - CFG_ENV_SIZE: + - CONFIG_ENV_OFFSET: + - CONFIG_ENV_ADDR: + - CONFIG_ENV_SIZE: These three #defines specify the offset and size of the environment area within the total memory of your DataFlash placed at the specified address. -- CFG_ENV_IS_IN_NAND: +- CONFIG_ENV_IS_IN_NAND: Define this if you have a NAND device which you want to use for the environment. - - CFG_ENV_OFFSET: - - CFG_ENV_SIZE: + - CONFIG_ENV_OFFSET: + - CONFIG_ENV_SIZE: These two #defines specify the offset and size of the environment area within the first NAND device. - - CFG_ENV_OFFSET_REDUND + - CONFIG_ENV_OFFSET_REDUND - This setting describes a second storage area of CFG_ENV_SIZE + This setting describes a second storage area of CONFIG_ENV_SIZE size used to hold a redundant copy of the environment data, so that there is a valid backup copy in case there is a power failure during a "saveenv" operation. - Note: CFG_ENV_OFFSET and CFG_ENV_OFFSET_REDUND must be aligned - to a block boundary, and CFG_ENV_SIZE must be a multiple of + Note: CONFIG_ENV_OFFSET and CONFIG_ENV_OFFSET_REDUND must be aligned + to a block boundary, and CONFIG_ENV_SIZE must be a multiple of the NAND devices block size. - CFG_SPI_INIT_OFFSET |