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