diff options
Diffstat (limited to 'README')
| -rw-r--r-- | README | 95 |
1 files changed, 89 insertions, 6 deletions
@@ -496,6 +496,13 @@ The following options need to be configured: exists, unlike the similar options in the Linux kernel. Do not set these options unless they apply! +- CPU timer options: + CONFIG_SYS_HZ + + The frequency of the timer returned by get_timer(). + get_timer() must operate in milliseconds and this CONFIG + option must be set to 1000. + - Linux Kernel Interface: CONFIG_CLOCKS_IN_MHZ @@ -1329,6 +1336,29 @@ The following options need to be configured: CONFIG_SH_MMCIF_CLK Define the clock frequency for MMCIF +- USB Device Firmware Update (DFU) class support: + CONFIG_DFU_FUNCTION + This enables the USB portion of the DFU USB class + + CONFIG_CMD_DFU + This enables the command "dfu" which is used to have + U-Boot create a DFU class device via USB. This command + requires that the "dfu_alt_info" environment variable be + set and define the alt settings to expose to the host. + + CONFIG_DFU_MMC + This enables support for exposing (e)MMC devices via DFU. + + CONFIG_DFU_NAND + This enables support for exposing NAND devices via DFU. + + CONFIG_SYS_DFU_MAX_FILE_SIZE + When updating files rather than the raw storage device, + we use a static buffer to copy the file into and then write + the buffer once we've been given the whole file. Define + this to the maximum filesize (in bytes) for the buffer. + Default is 4 MiB if undefined. + - Journaling Flash filesystem support: CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE, CONFIG_JFFS2_NAND_DEV @@ -1930,15 +1960,15 @@ CBFS (Coreboot Filesystem) support I2C_READ - Code that returns TRUE if the I2C data line is high, - FALSE if it is low. + Code that returns true if the I2C data line is high, + false if it is low. eg: #define I2C_READ ((immr->im_cpm.cp_pbdat & PB_SDA) != 0) I2C_SDA(bit) - If <bit> is TRUE, sets the I2C data line high. If it - is FALSE, it clears it (low). + If <bit> is true, sets the I2C data line high. If it + is false, it clears it (low). eg: #define I2C_SDA(bit) \ if(bit) immr->im_cpm.cp_pbdat |= PB_SDA; \ @@ -1946,8 +1976,8 @@ CBFS (Coreboot Filesystem) support I2C_SCL(bit) - If <bit> is TRUE, sets the I2C clock line high. If it - is FALSE, it clears it (low). + If <bit> is true, sets the I2C clock line high. If it + is false, it clears it (low). eg: #define I2C_SCL(bit) \ if(bit) immr->im_cpm.cp_pbdat |= PB_SCL; \ @@ -2768,6 +2798,32 @@ FIT uImage format: Adds the MTD partitioning infrastructure from the Linux kernel. Needed for UBI support. +- UBI support + CONFIG_CMD_UBI + + Adds commands for interacting with MTD partitions formatted + with the UBI flash translation layer + + Requires also defining CONFIG_RBTREE + + CONFIG_UBI_SILENCE_MSG + + Make the verbose messages from UBI stop printing. This leaves + warnings and errors enabled. + +- UBIFS support + CONFIG_CMD_UBIFS + + Adds commands for interacting with UBI volumes formatted as + UBIFS. UBIFS is read-only in u-boot. + + Requires UBI support as well as CONFIG_LZO + + CONFIG_UBIFS_SILENCE_MSG + + Make the verbose messages from UBIFS stop printing. This leaves + warnings and errors enabled. + - SPL framework CONFIG_SPL Enable building of SPL globally. @@ -3487,6 +3543,33 @@ but it can not erase, write this NOR flash by SRIO or PCIE interface. environment. If redundant environment is used, it will be copied to CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE. +- CONFIG_ENV_IS_IN_UBI: + + Define this if you have an UBI volume that you want to use for the + environment. This has the benefit of wear-leveling the environment + accesses, which is important on NAND. + + - CONFIG_ENV_UBI_PART: + + Define this to a string that is the mtd partition containing the UBI. + + - CONFIG_ENV_UBI_VOLUME: + + Define this to the name of the volume that you want to store the + environment in. + + - CONFIG_ENV_UBI_VOLUME_REDUND: + + Define this to the name of another volume to store a second copy of + the environment in. This will enable redundant environments in UBI. + It is assumed that both volumes are in the same MTD partition. + + - CONFIG_UBI_SILENCE_MSG + - CONFIG_UBIFS_SILENCE_MSG + + You will probably want to define these to avoid a really noisy system + when storing the env in UBI. + - CONFIG_SYS_SPI_INIT_OFFSET Defines offset to the initial SPI buffer area in DPRAM. The |