- arm925t Files specific to ARM 925 CPUs
- arm926ejs Files specific to ARM 926 CPUs
- arm1136 Files specific to ARM 1136 CPUs
+ - at32ap Files specific to Atmel AVR32 AP CPUs
- i386 Files specific to i386 CPUs
- ixp Files specific to Intel XScale IXP CPUs
- mcf52x2 Files specific to Freescale ColdFire MCF52x2 CPUs
- examples Example code for standalone applications, etc.
- include Header Files
- lib_arm Files generic to ARM architecture
+- lib_avr32 Files generic to AVR32 architecture
- lib_generic Files generic to all architectures
- lib_i386 Files generic to i386 architecture
- lib_m68k Files generic to m68k architecture
----------------------
CONFIG_NIOS2
+ AVR32 based CPUs:
+ ----------------------
+ CONFIG_AT32AP
- Board Type: Define exactly one of
CONFIG_PCI5441 CONFIG_PK1C20
CONFIG_EP1C20 CONFIG_EP1S10 CONFIG_EP1S40
+ AVR32 based boards:
+ -------------------
+
+ CONFIG_ATSTK1000
+
+- CPU Daughterboard Type: (if CONFIG_ATSTK1000 is defined)
+ Define exactly one of
+ CONFIG_ATSTK1002
+
- CPU Module Type: (if CONFIG_COGENT is defined)
Define exactly one of
Board code has addition modification that it wants to make
to the flat device tree before handing it off to the kernel
+ CONFIG_OF_BOOT_CPU
+
+ This define fills in the correct boot cpu in the boot
+ param header, the default value is zero if undefined.
+
- Serial Ports:
CFG_PL010_SERIAL
clock chips. See common/cmd_i2c.c for a description of the
command line interface.
- CONFIG_HARD_I2C selects the CPM hardware driver for I2C.
+ CONFIG_I2C_CMD_TREE is a recommended option that places
+ all I2C commands under a single 'i2c' root command. The
+ older 'imm', 'imd', 'iprobe' etc. commands are considered
+ deprecated and may disappear in the future.
+
+ CONFIG_HARD_I2C selects a hardware I2C controller.
CONFIG_SOFT_I2C configures u-boot to use a software (aka
bit-banging) driver instead of CPM or similar hardware
in u-boot bd_info structure based on u-boot environment
variable "i2cfast". (see also i2cfast)
+ CONFIG_I2C_MULTI_BUS
+
+ This option allows the use of multiple I2C buses, each of which
+ must have a controller. At any point in time, only one bus is
+ active. To switch to a different bus, use the 'i2c dev' command.
+ Note that bus numbering is zero-based.
+
+ CFG_I2C_NOPROBES
+
+ This option specifies a list of I2C devices that will be skipped
+ when the 'i2c probe' command is issued (or 'iprobe' using the legacy
+ command). If CONFIG_I2C_MULTI_BUS is set, specify a list of bus-device
+ pairs. Otherwise, specify a 1D array of device addresses
+
+ e.g.
+ #undef CONFIG_I2C_MULTI_BUS
+ #define CFG_I2C_NOPROBES {0x50,0x68}
+
+ will skip addresses 0x50 and 0x68 on a board with one I2C bus
+
+ #define CONFIG_I2C_MULTI_BUS
+ #define CFG_I2C_MULTI_NOPROBES {{0,0x50},{0,0x68},{1,0x54}}
+
+ will skip addresses 0x50 and 0x68 on bus 0 and address 0x54 on bus 1
+
+ CFG_SPD_BUS_NUM
+
+ If defined, then this indicates the I2C bus number for DDR SPD.
+ If not defined, then U-Boot assumes that SPD is on I2C bus 0.
+
+ CONFIG_FSL_I2C
+
+ Define this option if you want to use Freescale's I2C driver in
+ drivers/fsl_i2c.c.
+
+
- SPI Support: CONFIG_SPI
Enables SPI driver (so far only tested with
default value of 5 is used.
- Command Interpreter:
- CFG_AUTO_COMPLETE
+ CONFIG_AUTO_COMPLETE
Enable auto completion of commands using TAB.
+ Note that this feature has NOT been implemented yet
+ for the "hush" shell.
+
+
CFG_HUSH_PARSER
Define this variable to enable the "hush" shell (from
CFG_POCMR2_MASK_ATTRIB: (MPC826x only)
Overrides the default PCI memory map in cpu/mpc8260/pci.c if set.
+- CONFIG_SPD_EEPROM
+ Get DDR timing information from an I2C EEPROM. Common with pluggable
+ memory modules such as SODIMMs
+ SPD_EEPROM_ADDRESS
+ I2C address of the SPD EEPROM
+
+- CFG_SPD_BUS_NUM
+ If SPD EEPROM is on an I2C bus other than the first one, specify here.
+ Note that the value must resolve to something your driver can deal with.
+
+- CFG_83XX_DDR_USES_CS0
+ Only for 83xx systems. If specified, then DDR should be configured
+ using CS0 and CS1 instead of CS2 and CS3.
+
+- CFG_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.
4.4BSD, Linux, SVR4, Esix, Solaris, Irix, SCO, Dell, NCR, VxWorks,
LynxOS, pSOS, QNX, RTEMS, ARTOS;
Currently supported: Linux, NetBSD, VxWorks, QNX, RTEMS, ARTOS, LynxOS).
-* Target CPU Architecture (Provisions for Alpha, ARM, Intel x86,
+* Target CPU Architecture (Provisions for Alpha, ARM, AVR32, Intel x86,
IA64, MIPS, NIOS, PowerPC, IBM S390, SuperH, Sparc, Sparc 64 Bit;
- Currently supported: ARM, Intel x86, MIPS, NIOS, PowerPC).
+ Currently supported: ARM, AVR32, Intel x86, MIPS, NIOS, PowerPC).
* Compression Type (uncompressed, gzip, bzip2)
* Load Address
* Entry Point
bash#
+Boot Linux and pass a flat device tree:
+-----------
+
+First, U-Boot must be compiled with the appropriate defines. See the section
+titled "Linux Kernel Interface" above for a more in depth explanation. The
+following is an example of how to start a kernel and pass an updated
+flat device tree:
+
+=> print oftaddr
+oftaddr=0x300000
+=> print oft
+oft=oftrees/mpc8540ads.dtb
+=> tftp $oftaddr $oft
+Speed: 1000, full duplex
+Using TSEC0 device
+TFTP from server 192.168.1.1; our IP address is 192.168.1.101
+Filename 'oftrees/mpc8540ads.dtb'.
+Load address: 0x300000
+Loading: #
+done
+Bytes transferred = 4106 (100a hex)
+=> tftp $loadaddr $bootfile
+Speed: 1000, full duplex
+Using TSEC0 device
+TFTP from server 192.168.1.1; our IP address is 192.168.1.2
+Filename 'uImage'.
+Load address: 0x200000
+Loading:############
+done
+Bytes transferred = 1029407 (fb51f hex)
+=> print loadaddr
+loadaddr=200000
+=> print oftaddr
+oftaddr=0x300000
+=> bootm $loadaddr - $oftaddr
+## Booting image at 00200000 ...
+ Image Name: Linux-2.6.17-dirty
+ Image Type: PowerPC Linux Kernel Image (gzip compressed)
+ Data Size: 1029343 Bytes = 1005.2 kB
+ Load Address: 00000000
+ Entry Point: 00000000
+ Verifying Checksum ... OK
+ Uncompressing Kernel Image ... OK
+Booting using flat device tree at 0x300000
+Using MPC85xx ADS machine description
+Memory CAM mapping: CAM0=256Mb, CAM1=256Mb, CAM2=0Mb residual: 0Mb
+[snip]
+
+
More About U-Boot Image Types:
------------------------------
projects / people / ms / u-boot.git / blobdiff