X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=README;h=46181a4bcd24f22fcb95d0b1dfd50218750833c1;hb=364123db6730d32330f818b65360d2cd27396667;hp=3674ca105c019d5e3e5dbf2957d0674d65841640;hpb=22bab87db1b065aa66b15c2b47c89247289d4839;p=u-boot diff --git a/README b/README index 3674ca105c..46181a4bcd 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 @@ -592,11 +605,15 @@ The following options need to be configured: CONFIG_CMD_DHCP * DHCP support CONFIG_CMD_DIAG * Diagnostics CONFIG_CMD_DOC * Disk-On-Chip Support + CONFIG_CMD_DS4510 * ds4510 I2C gpio commands + CONFIG_CMD_DS4510_INFO * ds4510 I2C info command + CONFIG_CMD_DS4510_MEM * ds4510 I2C eeprom/sram commansd + CONFIG_CMD_DS4510_RST * ds4510 I2C rst command CONFIG_CMD_DTT * Digital Therm and Thermostat 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 @@ -621,6 +638,8 @@ The following options need to be configured: CONFIG_CMD_MII * MII utility commands CONFIG_CMD_NAND * NAND support CONFIG_CMD_NET bootp, tftpboot, rarpboot + CONFIG_CMD_PCA953X * PCA953x I2C gpio commands + CONFIG_CMD_PCA953X_INFO * PCA953x I2C gpio info command CONFIG_CMD_PCI * pciinfo CONFIG_CMD_PCMCIA * PCMCIA support CONFIG_CMD_PING * send ICMP ECHO_REQUEST to network @@ -698,6 +717,13 @@ The following options need to be configured: Note that if the RTC uses I2C, then the I2C interface must also be configured. See I2C Support, below. +- GPIO Support: + CONFIG_PCA953X - use NXP's PCA953X series I2C GPIO + CONFIG_PCA953X_INFO - enable pca953x info command + + Note that if the GPIO device uses I2C, then the I2C interface + must also be configured. See I2C Support, below. + - Timestamp Support: When CONFIG_TIMESTAMP is selected, the timestamp @@ -1496,6 +1522,15 @@ 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 @@ -2023,6 +2058,9 @@ 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. @@ -2425,6 +2463,13 @@ 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: --------------------------------------------------- @@ -2570,6 +2615,10 @@ 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 @@ -2586,10 +2635,6 @@ 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. @@ -2996,8 +3041,7 @@ 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.