diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/README.cfi | 29 | ||||
| -rw-r--r-- | doc/mkimage.1 | 8 |
2 files changed, 33 insertions, 4 deletions
diff --git a/doc/README.cfi b/doc/README.cfi new file mode 100644 index 0000000000..d087ff0d63 --- /dev/null +++ b/doc/README.cfi @@ -0,0 +1,29 @@ +The common CFI driver provides this weak default implementation for +flash_cmd_reset(): + +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) + __attribute__((weak,alias("__flash_cmd_reset"))); + + +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: +http://www.mail-archive.com/u-boot@lists.denx.de/msg24368.html diff --git a/doc/mkimage.1 b/doc/mkimage.1 index 7985f5abe1..f27da6b98b 100644 --- a/doc/mkimage.1 +++ b/doc/mkimage.1 @@ -41,22 +41,22 @@ mkimage lists the information contained in the header of an existing U-Boot imag .TP .BI "\-A [" "architecture" "]" -Set architecture. Pass -h as the architecture to see the list of supported architectures. +Set architecture. Pass \-h as the architecture to see the list of supported architectures. .TP .BI "\-O [" "os" "]" Set operating system. bootm command of u-boot changes boot method by os type. -Pass -h as the OS to see the list of supported OS. +Pass \-h as the OS to see the list of supported OS. .TP .BI "\-T [" "image type" "]" Set image type. -Pass -h as the image to see the list of supported image type. +Pass \-h as the image to see the list of supported image type. .TP .BI "\-C [" "compression type" "]" Set compression type. -Pass -h as the compression to see the list of supported compression type. +Pass \-h as the compression to see the list of supported compression type. .TP .BI "\-a [" "load addess" "]" |