X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=README;h=32d9acdd216a8a972d79852948a1542d000fd591;hb=faac4fd852e39cb1d7a740801b060e41aeacef1f;hp=ad792d394fbbf092ba810c3821f6fe8962d4e19c;hpb=a7c9310457e85b4598abe5b304108edf11332e2f;p=platform%2Fkernel%2Fu-boot.git diff --git a/README b/README index ad792d3..32d9acd 100644 --- a/README +++ b/README @@ -318,6 +318,11 @@ The following options need to be configured: that this requires a (stable) reference clock (32 kHz RTC clock or CONFIG_SYS_8XX_XIN) + CONFIG_SYS_DELAYED_ICACHE + + Define this option if you want to enable the + ICache only when Code runs from RAM. + - Intel Monahans options: CONFIG_SYS_MONAHANS_RUN_MODE_OSC_RATIO @@ -484,6 +489,14 @@ The following options need to be configured: CONFIG_SYS_BAUDRATE_TABLE, see below. CONFIG_SYS_BRGCLK_PRESCALE, baudrate prescale +- Console Rx buffer length + With CONFIG_SYS_SMC_RXBUFLEN it is possible to define + the maximum receive buffer length for the SMC. + This option is actual only for 82xx and 8xx possible. + If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE + must be defined, to setup the maximum idle timeout for + the SMC. + - Interrupt driven serial port input: CONFIG_SERIAL_SOFTWARE_FIFO @@ -600,7 +613,7 @@ The following options need to be configured: CONFIG_CMD_ECHO echo arguments CONFIG_CMD_EEPROM * EEPROM read/write support CONFIG_CMD_ELF * bootelf, bootvx - CONFIG_CMD_ENV saveenv + CONFIG_CMD_SAVEENV saveenv CONFIG_CMD_FDC * Floppy Disk Support CONFIG_CMD_FAT * FAT partition support CONFIG_CMD_FDOS * Dos diskette Support @@ -623,6 +636,7 @@ The following options need to be configured: CONFIG_CMD_MISC Misc functions like sleep etc CONFIG_CMD_MMC * MMC memory mapped support CONFIG_CMD_MII * MII utility commands + CONFIG_CMD_MTDPARTS * MTD partition support CONFIG_CMD_NAND * NAND support CONFIG_CMD_NET bootp, tftpboot, rarpboot CONFIG_CMD_PCA953X * PCA953x I2C gpio commands @@ -1509,6 +1523,15 @@ The following options need to be configured: Bus on the MPC8260. But it should be not so difficult to add this option to other architectures. + CONFIG_SOFT_I2C_READ_REPEATED_START + + defining this will force the i2c_read() function in + the soft_i2c driver to perform an I2C repeated start + between writing the address pointer and reading the + data. If this define is omitted the default behaviour + of doing a stop-start sequence will be used. Most I2C + devices can use either method, but some require one or + the other. - SPI Support: CONFIG_SPI @@ -2036,6 +2059,9 @@ Configuration Settings: - CONFIG_SYS_LONGHELP: Defined when you want long help messages included; undefine this when you're short of memory. +- CONFIG_SYS_HELP_CMD_WIDTH: Defined when you want to override the default + width of the commands listed in the 'help' command output. + - CONFIG_SYS_PROMPT: This is what U-Boot prints on the console to prompt for user input. @@ -2438,6 +2464,13 @@ use the "saveenv" command to store a valid environment. - CONFIG_SYS_64BIT_STRTOUL: Adds simple_strtoull that returns a 64bit value +- CONFIG_NS16550_MIN_FUNCTIONS: + Define this if you desire to only have use of the NS16550_init + and NS16550_putc functions for the serial driver located at + drivers/serial/ns16550.c. This option is useful for saving + space for already greatly restricted images, including but not + limited to NAND_SPL configurations. + Low Level (hardware related) configuration options: --------------------------------------------------- @@ -2583,6 +2616,10 @@ Low Level (hardware related) configuration options: CONFIG_SYS_POCMR2_MASK_ATTRIB: (MPC826x only) Overrides the default PCI memory map in cpu/mpc8260/pci.c if set. +- CONFIG_PCI_DISABLE_PCIE: + Disable PCI-Express on systems where it is supported but not + required. + - CONFIG_SPD_EEPROM Get DDR timing information from an I2C EEPROM. Common with pluggable memory modules such as SODIMMs @@ -2599,10 +2636,6 @@ Low Level (hardware related) configuration options: Only for 83xx systems. If specified, then DDR should be configured using CS0 and CS1 instead of CS2 and CS3. -- CONFIG_SYS_83XX_DDR_USES_CS0 - Only for 83xx systems. If specified, then DDR should - be configured using CS0 and CS1 instead of CS2 and CS3. - - CONFIG_ETHER_ON_FEC[12] Define to enable FEC[12] on a 8xx series processor. @@ -3009,8 +3042,7 @@ Some configuration options can be set using Environment Variables: Useful on scripts which control the retry operation themselves. - npe_ucode - see CONFIG_IXP4XX_NPE_EXT_UCOD - if set load address for the NPE microcode + npe_ucode - set load address for the NPE microcode tftpsrcport - If this is set, the value is used for TFTP's UDP source port.