1 The common CFI driver provides this weak default implementation for 2 flash_cmd_reset(): 3 4 void __flash_cmd_reset(flash_info_t *info) 5 { 6 /* 7 * We do not yet know what kind of commandset to use, so we issue 8 * the reset command in both Intel and AMD variants, in the hope 9 * that AMD flash roms ignore the Intel command. 10 */ 11 flash_write_cmd(info, 0, 0, AMD_CMD_RESET); 12 flash_write_cmd(info, 0, 0, FLASH_CMD_RESET); 13 } 14 void flash_cmd_reset(flash_info_t *info) 15 __attribute__((weak,alias("__flash_cmd_reset"))); 16 17 18 Some flash chips seems to have trouble with this reset sequence. In this case 19 the board specific code can override this weak default version with a board 20 specific function. For example the digsy_mtc board equipped with the M29W128GH 21 from Numonyx needs this version to function properly: 22 23 void flash_cmd_reset(flash_info_t *info) 24 { 25 flash_write_cmd(info, 0, 0, AMD_CMD_RESET); 26 } 27 28 see also: 29 http://www.mail-archive.com/u-boot@lists.denx.de/msg24368.html 30