blob: 81e7cf1d7e6617018c80129c4016c59eacc6c1f8 [file] [log] [blame]
The common CFI driver provides this weak default implementation for
void __flash_cmd_reset(flash_info_t *info)
* We do not yet know what kind of commandset to use, so we issue
* the reset command in both Intel and AMD variants, in the hope
* that AMD flash roms ignore the Intel command.
flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
flash_write_cmd(info, 0, 0, FLASH_CMD_RESET);
void flash_cmd_reset(flash_info_t *info)
Some flash chips seems to have trouble with this reset sequence. In this case
the board specific code can override this weak default version with a board
specific function. For example the digsy_mtc board equipped with the M29W128GH
from Numonyx needs this version to function properly:
void flash_cmd_reset(flash_info_t *info)
flash_write_cmd(info, 0, 0, AMD_CMD_RESET);
see also:
Config Option
CONFIG_SYS_MAX_FLASH_SECT: Number of sectors available on Flash device
CONFIG_SYS_FLASH_CFI_WIDTH: Data-width of the flash device
CONFIG_CMD_FLASH: Enables Flash command library
CONFIG_FLASH_CFI_MTD: Enables MTD frame work for NOR Flash devices