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README
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*********************************************************************
Steps to build the u-boot:
Download and install the cross toolchain gcc version 4:
$ cd /opt
$ tar xjf mipseltools-gcc412-glibc261.tar.bz2
$ export PATH=/opt/mipseltools-gcc412-glibc261/bin:$PATH
Download the u-boot tarball u-boot-1.1.6.tar.bz2 and unpack it:
$ tar xjf u-boot-1.1.6.tar.bz2
Download the latest u-boot patch and patch it to the u-boot tree:
$ cd u-boot-1.1.6
$ gzip -cd ../u-boot-1.1.6-jz-yyyymmdd.patch.gz | patch -p1
or
$ cd u-boot-1.1.6
$ patch -p1 < ../u-boot-1.1.6-yyyymmdd.patch
Make defconfig of the JZSOC based platform, eg:
$ make lepus60b_nand_config (NAND boot for JZ4760B LEPUS board)
$ make lepus_nand_config (NAND boot for JZ4760 LEPUS board)
$ make cetus_nand_config (NAND boot for JZ4755 CETUS board)
$ make apus_nand_config (NAND boot for JZ4750 APUS board)
$ make pavo_config (NOR boot for JZ4740 PAVO board)
or
$ make pavo_nand_config (NAND boot for JZ4740 PAVO board)
$ make pmpv2_config (NOR boot for JZ4730 PMP Ver 2.x board)
or
$ make pmpv2_nand_config (NAND boot for JZ4730 PMP Ver 2.x board)
Build the u-boot:
$ make
Then burn the u-boot-nand.bin (for NAND flash) or u-boot.bin (for NOR flash)
to the target board by using JDI or USB boot tool.
*********************************************************************
u-boot-1.1.6-jz-20110417-r1659.patch.gz
* init verision for JZ4760B on LEPUS board
* add mbr support for SD card adn inand
* add 8K bytes page nand support
u-boot-1.1.6-20101015.patch.gz
* support pt-702
* add makefile for android
* add MDDR_MT46H128M16LF
* lepus spi boot support
* add hynix 4K page nand support
u-boot-1.1.6-20100724.patch.gz
* add EMC_MEM_PHY_BASE&EMC_MEM_PHY_BASE_SHIFT
* change the way to select the card's type sd or mmc , add the way to select the card's capacity high or low,changed by lltangjz_mmc.h
* add the definition of SD_SEND_IF_COND (CMD8).
* add support for high capacity MMC.
* change the CONFIG_BAUDRATE from 115200 to 57600.
* add support k9gag08uod.
* add cpm for jz4760 chip.
* change the pll calc m, n, od and add the limited for __PLL_M
* Configure UHCCDR Register for JZ4760 UHC.
* modified for DDR1.
* rm jz4760.c jz_serial.c cpu.c start.S nand_boot_jz4760.c.
* change no oob ecc correct.
* add Commandline Editing and History support for altair board.
* change eccpos to 24 and bch bit to 4.
* add support for lepus_nand_config.
* seprated SDRAM and DDR, seprated MDDR, DDR1 and DDR2 for jz4760.
* Add jz4760 sleep support when power down p0.
* add NAND_K9G8G08U0A.h MDDR_H5MS1G62MFP-J3M.h@jz_mem_nand_configs.
u-boot-1.1.6-20100302.patch.gz
* Added intc and mdma
* Added sd_mdelay function
* Modified jz4760.h for spl
* Change clock to 378MHz for TVE Output.
* Fixed some bugs for support 16 bit nand flash
* Added phone board aquila
* Correct BCH_ERR_INDEX_EVEN_BIT and BCH_ERR_INDEX_ODD_BIT for in jz4760.h,
added some macros for nand in f4760.h and __gpio_as_nor() for jz4760
* Added support of 24bit bmp size
* Supported any frequency of uart by copying some codes from linux kernel
* Modified cpu/mips/jz_cs8900.c to support JZ4750L
* Added support for Jz4725B volans board
* Changed eccbytes to 7 for 512-byte pagesize nand using 4-bit BCH
* Added 512-byte pagesize configuration in volans.h
* Modified include/configs/aquila.h to use bootargs for android
* Supported spi boot for f4760 board
* Move down #undef ENV_IS_EMBEDDED in env_nand.c to avoid empty env_ptr.
* Don't initialize net function for aquila board.
* Set CFG_ENV_SIZE to 0x10000 instead of CFG_NAND_BLOCK_SIZE.
* Supported large DRAM(jz4750>128M, jz4760>256M)
* Supported spi nor boot from zImage for apus board by undef CONFIG_LOAD_UBOOT in apus.h
u-boot-1.1.6-jz-20090903.patch.gz
* Added Jz4750l platform and board.
* Added support of jz4750l in start.S.
* Added __cpm_start_all() in nand_boot_jz4750.c.
* Changed CFG_NAND_U_BOOT_OFFS to (32 << 10) in f4750l.h.
* Corrected a bug in __gpio_as_nand_8bit(n) when unshare.
* Corrected board/f4750l/config.mk for supporting nand_boot.
* Modified mem to 32M for f4750l in f4750l.h.
* f4760 used 48M extal clock and sdram boot as default.
* Avoided a hardware bug of nor flash on fpga.
* Added mobile sdram args.
* Fiexed a bug about print.
* Modified DDRC_CFG_TSEL_BIT from 4 to 18 and added Mobile emrs macros;Modified jz_flush_dcache function (jz4750l.h) and gpio_as_i2c, added sync operation.
* Added mobile mddr definition, mddr init and mddr config and modified CONFIG_DDR_SDRAM to CONFIG_DDRC.
* Added Jz4760 surport, fpga paltform and eth driver, added gpio defination of eth and modified jz_eth.c to avoid compile it on JZ4760.
* Modified board/f4760/f4760.c, added GPIO initialization of ETH, corrected macros in jz4760_eth.h according to jz4760.h.
* f4760 uart uses 12M clock.
* Fixed a bug in cpu/mips/jz4760_eth.c and midified some macros.
u-boot-1.1.6-jz-20090506.patch.gz
* Change the size of Nand SPL from 256 KB to 32KB.
* You can define CFG_NAND_BCH_WITH_OOB in include/configs/xxx.h to conform
NAND ECC with linux kernel.
* APUS use 4K pagesize nand and 8bit BCH with eccpos equal to 24 as default.
* Add Jz4755 platform: CETUS board.
u-boot-1.1.6-jz-20090306.patch.gz
* Nand driver was modified to support using nandwrite_mlc utils in linux to
write uImage:
nandwrite_mlc -a -p /dev/mtd2 uImage
u-boot-1.1.6-jz-20090216.patch.gz
* Support Jz4750
* Support NAND of 4KB pagesize
* The ECC position in NAND oob could be modified by defining CFG_NAND_ECC_POS
in include/configs/xxx.h
u-boot-1.1.6-jz-20080530.patch.gz:
* Added Jz4725 DIPPER Board Support.
* Added FOXCONN_PT035TN01 LCD panel support for PAVO board.
* Modify jz4740_nand.c to optimize the RS correction algorithm.
u-boot-1.1.6-jz-20080414.patch.gz:
* nand_spl/nand_boot_jz4740.c: fixed a fatal bug of nand_load(), which will
fail to load u-boot when meeting a bad block.
* Modify the nand read/write/erase commands to enable the bad block handling.
u-boot-1.1.6-jz-20080226.patch.gz:
* Fixed method to test NAND bad block.
u-boot-1.1.6-jz-20071205.patch.gz:
* Add Jz4720 virgo board.
* Add SD 2.0 (SDHC) card support.
* Fix the nand wirte command.
u-boot-1.1.6-jz-20071026.patch.gz:
* Full package support for Jz4730 and Jz4740.
#
# (C) Copyright 2000 - 2005
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# See file CREDITS for list of people who contributed to this
# project.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of
# the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
# MA 02111-1307 USA
#
Summary:
========
This directory contains the source code for U-Boot, a boot loader for
Embedded boards based on PowerPC, ARM, MIPS and several other
processors, which can be installed in a boot ROM and used to
initialize and test the hardware or to download and run application
code.
The development of U-Boot is closely related to Linux: some parts of
the source code originate in the Linux source tree, we have some
header files in common, and special provision has been made to
support booting of Linux images.
Some attention has been paid to make this software easily
configurable and extendable. For instance, all monitor commands are
implemented with the same call interface, so that it's very easy to
add new commands. Also, instead of permanently adding rarely used
code (for instance hardware test utilities) to the monitor, you can
load and run it dynamically.
Status:
=======
In general, all boards for which a configuration option exists in the
Makefile have been tested to some extent and can be considered
"working". In fact, many of them are used in production systems.
In case of problems see the CHANGELOG and CREDITS files to find out
who contributed the specific port.
Where to get help:
==================
In case you have questions about, problems with or contributions for
U-Boot you should send a message to the U-Boot mailing list at
<u-boot-users@lists.sourceforge.net>. There is also an archive of
previous traffic on the mailing list - please search the archive
before asking FAQ's. Please see
http://lists.sourceforge.net/lists/listinfo/u-boot-users/
Where we come from:
===================
- start from 8xxrom sources
- create PPCBoot project (http://sourceforge.net/projects/ppcboot)
- clean up code
- make it easier to add custom boards
- make it possible to add other [PowerPC] CPUs
- extend functions, especially:
* Provide extended interface to Linux boot loader
* S-Record download
* network boot
* PCMCIA / CompactFLash / ATA disk / SCSI ... boot
- create ARMBoot project (http://sourceforge.net/projects/armboot)
- add other CPU families (starting with ARM)
- create U-Boot project (http://sourceforge.net/projects/u-boot)
Names and Spelling:
===================
The "official" name of this project is "Das U-Boot". The spelling
"U-Boot" shall be used in all written text (documentation, comments
in source files etc.). Example:
This is the README file for the U-Boot project.
File names etc. shall be based on the string "u-boot". Examples:
include/asm-ppc/u-boot.h
#include <asm/u-boot.h>
Variable names, preprocessor constants etc. shall be either based on
the string "u_boot" or on "U_BOOT". Example:
U_BOOT_VERSION u_boot_logo
IH_OS_U_BOOT u_boot_hush_start
Versioning:
===========
U-Boot uses a 3 level version number containing a version, a
sub-version, and a patchlevel: "U-Boot-2.34.5" means version "2",
sub-version "34", and patchlevel "4".
The patchlevel is used to indicate certain stages of development
between released versions, i. e. officially released versions of
U-Boot will always have a patchlevel of "0".
Directory Hierarchy:
====================
- board Board dependent files
- common Misc architecture independent functions
- cpu CPU specific files
- 74xx_7xx Files specific to Freescale MPC74xx and 7xx CPUs
- arm720t Files specific to ARM 720 CPUs
- arm920t Files specific to ARM 920 CPUs
- at91rm9200 Files specific to Atmel AT91RM9200 CPU
- imx Files specific to Freescale MC9328 i.MX CPUs
- s3c24x0 Files specific to Samsung S3C24X0 CPUs
- 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
- mips Files specific to MIPS CPUs
- mpc5xx Files specific to Freescale MPC5xx CPUs
- mpc5xxx Files specific to Freescale MPC5xxx CPUs
- mpc8xx Files specific to Freescale MPC8xx CPUs
- mpc8220 Files specific to Freescale MPC8220 CPUs
- mpc824x Files specific to Freescale MPC824x CPUs
- mpc8260 Files specific to Freescale MPC8260 CPUs
- mpc85xx Files specific to Freescale MPC85xx CPUs
- nios Files specific to Altera NIOS CPUs
- nios2 Files specific to Altera Nios-II CPUs
- ppc4xx Files specific to AMCC PowerPC 4xx CPUs
- pxa Files specific to Intel XScale PXA CPUs
- s3c44b0 Files specific to Samsung S3C44B0 CPUs
- sa1100 Files specific to Intel StrongARM SA1100 CPUs
- disk Code for disk drive partition handling
- doc Documentation (don't expect too much)
- drivers Commonly used device drivers
- dtt Digital Thermometer and Thermostat drivers
- 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
- lib_mips Files generic to MIPS architecture
- lib_nios Files generic to NIOS architecture
- lib_ppc Files generic to PowerPC architecture
- net Networking code
- post Power On Self Test
- rtc Real Time Clock drivers
- tools Tools to build S-Record or U-Boot images, etc.
Software Configuration:
=======================
Configuration is usually done using C preprocessor defines; the
rationale behind that is to avoid dead code whenever possible.
There are two classes of configuration variables:
* Configuration _OPTIONS_:
These are selectable by the user and have names beginning with
"CONFIG_".
* Configuration _SETTINGS_:
These depend on the hardware etc. and should not be meddled with if
you don't know what you're doing; they have names beginning with
"CFG_".
Later we will add a configuration tool - probably similar to or even
identical to what's used for the Linux kernel. Right now, we have to
do the configuration by hand, which means creating some symbolic
links and editing some configuration files. We use the TQM8xxL boards
as an example here.
Selection of Processor Architecture and Board Type:
---------------------------------------------------
For all supported boards there are ready-to-use default
configurations available; just type "make <board_name>_config".
Example: For a TQM823L module type:
cd u-boot
make TQM823L_config
For the Cogent platform, you need to specify the cpu type as well;
e.g. "make cogent_mpc8xx_config". And also configure the cogent
directory according to the instructions in cogent/README.
Configuration Options:
----------------------
Configuration depends on the combination of board and CPU type; all
such information is kept in a configuration file
"include/configs/<board_name>.h".
Example: For a TQM823L module, all configuration settings are in
"include/configs/TQM823L.h".
Many of the options are named exactly as the corresponding Linux
kernel configuration options. The intention is to make it easier to
build a config tool - later.
The following options need to be configured:
- CPU Type: Define exactly one of
PowerPC based CPUs:
-------------------
CONFIG_MPC823, CONFIG_MPC850, CONFIG_MPC855, CONFIG_MPC860
or CONFIG_MPC5xx
or CONFIG_MPC8220
or CONFIG_MPC824X, CONFIG_MPC8260
or CONFIG_MPC85xx
or CONFIG_IOP480
or CONFIG_405GP
or CONFIG_405EP
or CONFIG_440
or CONFIG_MPC74xx
or CONFIG_750FX
ARM based CPUs:
---------------
CONFIG_SA1110
CONFIG_ARM7
CONFIG_PXA250
CONFIG_CPU_MONAHANS
MicroBlaze based CPUs:
----------------------
CONFIG_MICROBLAZE
Nios-2 based CPUs:
----------------------
CONFIG_NIOS2
AVR32 based CPUs:
----------------------
CONFIG_AT32AP
- Board Type: Define exactly one of
PowerPC based boards:
---------------------
CONFIG_ADCIOP CONFIG_FPS860L CONFIG_OXC
CONFIG_ADS860 CONFIG_GEN860T CONFIG_PCI405
CONFIG_AMX860 CONFIG_GENIETV CONFIG_PCIPPC2
CONFIG_AP1000 CONFIG_GTH CONFIG_PCIPPC6
CONFIG_AR405 CONFIG_gw8260 CONFIG_pcu_e
CONFIG_BAB7xx CONFIG_hermes CONFIG_PIP405
CONFIG_BC3450 CONFIG_hymod CONFIG_PM826
CONFIG_c2mon CONFIG_IAD210 CONFIG_ppmc8260
CONFIG_CANBT CONFIG_ICU862 CONFIG_QS823
CONFIG_CCM CONFIG_IP860 CONFIG_QS850
CONFIG_CMI CONFIG_IPHASE4539 CONFIG_QS860T
CONFIG_cogent_mpc8260 CONFIG_IVML24 CONFIG_RBC823
CONFIG_cogent_mpc8xx CONFIG_IVML24_128 CONFIG_RPXClassic
CONFIG_CPCI405 CONFIG_IVML24_256 CONFIG_RPXlite
CONFIG_CPCI4052 CONFIG_IVMS8 CONFIG_RPXsuper
CONFIG_CPCIISER4 CONFIG_IVMS8_128 CONFIG_rsdproto
CONFIG_CPU86 CONFIG_IVMS8_256 CONFIG_sacsng
CONFIG_CRAYL1 CONFIG_JSE CONFIG_Sandpoint8240
CONFIG_CSB272 CONFIG_LANTEC CONFIG_Sandpoint8245
CONFIG_CU824 CONFIG_LITE5200B CONFIG_sbc8260
CONFIG_DASA_SIM CONFIG_lwmon CONFIG_sbc8560
CONFIG_DB64360 CONFIG_MBX CONFIG_SM850
CONFIG_DB64460 CONFIG_MBX860T CONFIG_SPD823TS
CONFIG_DU405 CONFIG_MHPC CONFIG_STXGP3
CONFIG_DUET_ADS CONFIG_MIP405 CONFIG_SXNI855T
CONFIG_EBONY CONFIG_MOUSSE CONFIG_TQM823L
CONFIG_ELPPC CONFIG_MPC8260ADS CONFIG_TQM8260
CONFIG_ELPT860 CONFIG_MPC8540ADS CONFIG_TQM850L
CONFIG_ep8260 CONFIG_MPC8540EVAL CONFIG_TQM855L
CONFIG_ERIC CONFIG_MPC8560ADS CONFIG_TQM860L
CONFIG_ESTEEM192E CONFIG_MUSENKI CONFIG_TTTech
CONFIG_ETX094 CONFIG_MVS1 CONFIG_UTX8245
CONFIG_EVB64260 CONFIG_NETPHONE CONFIG_V37
CONFIG_FADS823 CONFIG_NETTA CONFIG_W7OLMC
CONFIG_FADS850SAR CONFIG_NETVIA CONFIG_W7OLMG
CONFIG_FADS860T CONFIG_NX823 CONFIG_WALNUT
CONFIG_FLAGADM CONFIG_OCRTC CONFIG_ZPC1900
CONFIG_FPS850L CONFIG_ORSG CONFIG_ZUMA
ARM based boards:
-----------------
CONFIG_ARMADILLO, CONFIG_AT91RM9200DK, CONFIG_CERF250,
CONFIG_CSB637, CONFIG_DELTA, CONFIG_DNP1110,
CONFIG_EP7312, CONFIG_H2_OMAP1610, CONFIG_HHP_CRADLE,
CONFIG_IMPA7, CONFIG_INNOVATOROMAP1510, CONFIG_INNOVATOROMAP1610,
CONFIG_KB9202, CONFIG_LART, CONFIG_LPD7A400,
CONFIG_LUBBOCK, CONFIG_OSK_OMAP5912, CONFIG_OMAP2420H4,
CONFIG_PLEB2, CONFIG_SHANNON, CONFIG_P2_OMAP730,
CONFIG_SMDK2400, CONFIG_SMDK2410, CONFIG_TRAB,
CONFIG_VCMA9
MicroBlaze based boards:
------------------------
CONFIG_SUZAKU
Nios-2 based boards:
------------------------
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
CONFIG_CMA286_60_OLD
--- FIXME --- not tested yet:
CONFIG_CMA286_60, CONFIG_CMA286_21, CONFIG_CMA286_60P,
CONFIG_CMA287_23, CONFIG_CMA287_50
- Motherboard Type: (if CONFIG_COGENT is defined)
Define exactly one of
CONFIG_CMA101, CONFIG_CMA102
- Motherboard I/O Modules: (if CONFIG_COGENT is defined)
Define one or more of
CONFIG_CMA302
- Motherboard Options: (if CONFIG_CMA101 or CONFIG_CMA102 are defined)
Define one or more of
CONFIG_LCD_HEARTBEAT - update a character position on
the lcd display every second with
a "rotator" |\-/|\-/
- Board flavour: (if CONFIG_MPC8260ADS is defined)
CONFIG_ADSTYPE
Possible values are:
CFG_8260ADS - original MPC8260ADS
CFG_8266ADS - MPC8266ADS
CFG_PQ2FADS - PQ2FADS-ZU or PQ2FADS-VR
CFG_8272ADS - MPC8272ADS
- MPC824X Family Member (if CONFIG_MPC824X is defined)
Define exactly one of
CONFIG_MPC8240, CONFIG_MPC8245
- 8xx CPU Options: (if using an MPC8xx cpu)
CONFIG_8xx_GCLK_FREQ - deprecated: CPU clock if
get_gclk_freq() cannot work
e.g. if there is no 32KHz
reference PIT/RTC clock
CONFIG_8xx_OSCLK - PLL input clock (either EXTCLK
or XTAL/EXTAL)
- 859/866/885 CPU options: (if using a MPC859 or MPC866 or MPC885 CPU):
CFG_8xx_CPUCLK_MIN
CFG_8xx_CPUCLK_MAX
CONFIG_8xx_CPUCLK_DEFAULT
See doc/README.MPC866
CFG_MEASURE_CPUCLK
Define this to measure the actual CPU clock instead
of relying on the correctness of the configured
values. Mostly useful for board bringup to make sure
the PLL is locked at the intended frequency. Note
that this requires a (stable) reference clock (32 kHz
RTC clock or CFG_8XX_XIN)
- Intel Monahans options:
CFG_MONAHANS_RUN_MODE_OSC_RATIO
Defines the Monahans run mode to oscillator
ratio. Valid values are 8, 16, 24, 31. The core
frequency is this value multiplied by 13 MHz.
CFG_MONAHANS_TURBO_RUN_MODE_RATIO
Defines the Monahans turbo mode to oscillator
ratio. Valid values are 1 (default if undefined) and
2. The core frequency as calculated above is multiplied
by this value.
- Linux Kernel Interface:
CONFIG_CLOCKS_IN_MHZ
U-Boot stores all clock information in Hz
internally. For binary compatibility with older Linux
kernels (which expect the clocks passed in the
bd_info data to be in MHz) the environment variable
"clocks_in_mhz" can be defined so that U-Boot
converts clock data to MHZ before passing it to the
Linux kernel.
When CONFIG_CLOCKS_IN_MHZ is defined, a definition of
"clocks_in_mhz=1" is automatically included in the
default environment.
CONFIG_MEMSIZE_IN_BYTES [relevant for MIPS only]
When transfering memsize parameter to linux, some versions
expect it to be in bytes, others in MB.
Define CONFIG_MEMSIZE_IN_BYTES to make it in bytes.
CONFIG_OF_FLAT_TREE
New kernel versions are expecting firmware settings to be
passed using flat open firmware trees.
The environment variable "disable_of", when set, disables this
functionality.
CONFIG_OF_FLAT_TREE_MAX_SIZE
The maximum size of the constructed OF tree.
OF_CPU - The proper name of the cpus node.
OF_SOC - The proper name of the soc node.
OF_TBCLK - The timebase frequency.
OF_STDOUT_PATH - The path to the console device
CONFIG_OF_HAS_BD_T
The resulting flat device tree will have a copy of the bd_t.
Space should be pre-allocated in the dts for the bd_t.
CONFIG_OF_HAS_UBOOT_ENV
The resulting flat device tree will have a copy of u-boot's
environment variables
CONFIG_OF_BOARD_SETUP
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
Define this if you want support for Amba PrimeCell PL010 UARTs.
CFG_PL011_SERIAL
Define this if you want support for Amba PrimeCell PL011 UARTs.
CONFIG_PL011_CLOCK
If you have Amba PrimeCell PL011 UARTs, set this variable to
the clock speed of the UARTs.
CONFIG_PL01x_PORTS
If you have Amba PrimeCell PL010 or PL011 UARTs on your board,
define this to a list of base addresses for each (supported)
port. See e.g. include/configs/versatile.h
- Console Interface:
Depending on board, define exactly one serial port
(like CONFIG_8xx_CONS_SMC1, CONFIG_8xx_CONS_SMC2,
CONFIG_8xx_CONS_SCC1, ...), or switch off the serial
console by defining CONFIG_8xx_CONS_NONE
Note: if CONFIG_8xx_CONS_NONE is defined, the serial
port routines must be defined elsewhere
(i.e. serial_init(), serial_getc(), ...)
CONFIG_CFB_CONSOLE
Enables console device for a color framebuffer. Needs following
defines (cf. smiLynxEM, i8042, board/eltec/bab7xx)
VIDEO_FB_LITTLE_ENDIAN graphic memory organisation
(default big endian)
VIDEO_HW_RECTFILL graphic chip supports
rectangle fill
(cf. smiLynxEM)
VIDEO_HW_BITBLT graphic chip supports
bit-blit (cf. smiLynxEM)
VIDEO_VISIBLE_COLS visible pixel columns
(cols=pitch)
VIDEO_VISIBLE_ROWS visible pixel rows
VIDEO_PIXEL_SIZE bytes per pixel
VIDEO_DATA_FORMAT graphic data format
(0-5, cf. cfb_console.c)
VIDEO_FB_ADRS framebuffer address
VIDEO_KBD_INIT_FCT keyboard int fct
(i.e. i8042_kbd_init())
VIDEO_TSTC_FCT test char fct
(i.e. i8042_tstc)
VIDEO_GETC_FCT get char fct
(i.e. i8042_getc)
CONFIG_CONSOLE_CURSOR cursor drawing on/off
(requires blink timer
cf. i8042.c)
CFG_CONSOLE_BLINK_COUNT blink interval (cf. i8042.c)
CONFIG_CONSOLE_TIME display time/date info in
upper right corner
(requires CFG_CMD_DATE)
CONFIG_VIDEO_LOGO display Linux logo in
upper left corner
CONFIG_VIDEO_BMP_LOGO use bmp_logo.h instead of
linux_logo.h for logo.
Requires CONFIG_VIDEO_LOGO
CONFIG_CONSOLE_EXTRA_INFO
addional board info beside
the logo
When CONFIG_CFB_CONSOLE is defined, video console is
default i/o. Serial console can be forced with
environment 'console=serial'.
When CONFIG_SILENT_CONSOLE is defined, all console
messages (by U-Boot and Linux!) can be silenced with
the "silent" environment variable. See
doc/README.silent for more information.
- Console Baudrate:
CONFIG_BAUDRATE - in bps
Select one of the baudrates listed in
CFG_BAUDRATE_TABLE, see below.
CFG_BRGCLK_PRESCALE, baudrate prescale
- Interrupt driven serial port input:
CONFIG_SERIAL_SOFTWARE_FIFO
PPC405GP only.
Use an interrupt handler for receiving data on the
serial port. It also enables using hardware handshake
(RTS/CTS) and UART's built-in FIFO. Set the number of
bytes the interrupt driven input buffer should have.
Leave undefined to disable this feature, including
disable the buffer and hardware handshake.
- Console UART Number:
CONFIG_UART1_CONSOLE
AMCC PPC4xx only.
If defined internal UART1 (and not UART0) is used
as default U-Boot console.
- Boot Delay: CONFIG_BOOTDELAY - in seconds
Delay before automatically booting the default image;
set to -1 to disable autoboot.
See doc/README.autoboot for these options that
work with CONFIG_BOOTDELAY. None are required.
CONFIG_BOOT_RETRY_TIME
CONFIG_BOOT_RETRY_MIN
CONFIG_AUTOBOOT_KEYED
CONFIG_AUTOBOOT_PROMPT
CONFIG_AUTOBOOT_DELAY_STR
CONFIG_AUTOBOOT_STOP_STR
CONFIG_AUTOBOOT_DELAY_STR2
CONFIG_AUTOBOOT_STOP_STR2
CONFIG_ZERO_BOOTDELAY_CHECK
CONFIG_RESET_TO_RETRY
- Autoboot Command:
CONFIG_BOOTCOMMAND
Only needed when CONFIG_BOOTDELAY is enabled;
define a command string that is automatically executed
when no character is read on the console interface
within "Boot Delay" after reset.
CONFIG_BOOTARGS
This can be used to pass arguments to the bootm
command. The value of CONFIG_BOOTARGS goes into the
environment value "bootargs".
CONFIG_RAMBOOT and CONFIG_NFSBOOT
The value of these goes into the environment as
"ramboot" and "nfsboot" respectively, and can be used
as a convenience, when switching between booting from
ram and nfs.
- Pre-Boot Commands:
CONFIG_PREBOOT
When this option is #defined, the existence of the
environment variable "preboot" will be checked
immediately before starting the CONFIG_BOOTDELAY
countdown and/or running the auto-boot command resp.
entering interactive mode.
This feature is especially useful when "preboot" is
automatically generated or modified. For an example
see the LWMON board specific code: here "preboot" is
modified when the user holds down a certain
combination of keys on the (special) keyboard when
booting the systems
- Serial Download Echo Mode:
CONFIG_LOADS_ECHO
If defined to 1, all characters received during a
serial download (using the "loads" command) are
echoed back. This might be needed by some terminal
emulations (like "cu"), but may as well just take
time on others. This setting #define's the initial
value of the "loads_echo" environment variable.
- Kgdb Serial Baudrate: (if CFG_CMD_KGDB is defined)
CONFIG_KGDB_BAUDRATE
Select one of the baudrates listed in
CFG_BAUDRATE_TABLE, see below.
- Monitor Functions:
CONFIG_COMMANDS
Most monitor functions can be selected (or
de-selected) by adjusting the definition of
CONFIG_COMMANDS; to select individual functions,
#define CONFIG_COMMANDS by "OR"ing any of the
following values:
#define enables commands:
-------------------------
CFG_CMD_ASKENV * ask for env variable
CFG_CMD_AUTOSCRIPT Autoscript Support
CFG_CMD_BDI bdinfo
CFG_CMD_BEDBUG * Include BedBug Debugger
CFG_CMD_BMP * BMP support
CFG_CMD_BSP * Board specific commands
CFG_CMD_BOOTD bootd
CFG_CMD_CACHE * icache, dcache
CFG_CMD_CONSOLE coninfo
CFG_CMD_DATE * support for RTC, date/time...
CFG_CMD_DHCP * DHCP support
CFG_CMD_DIAG * Diagnostics
CFG_CMD_DOC * Disk-On-Chip Support
CFG_CMD_DTT * Digital Therm and Thermostat
CFG_CMD_ECHO echo arguments
CFG_CMD_EEPROM * EEPROM read/write support
CFG_CMD_ELF * bootelf, bootvx
CFG_CMD_ENV saveenv
CFG_CMD_FDC * Floppy Disk Support
CFG_CMD_FAT * FAT partition support
CFG_CMD_FDOS * Dos diskette Support
CFG_CMD_FLASH flinfo, erase, protect
CFG_CMD_FPGA FPGA device initialization support
CFG_CMD_HWFLOW * RTS/CTS hw flow control
CFG_CMD_I2C * I2C serial bus support
CFG_CMD_IDE * IDE harddisk support
CFG_CMD_IMI iminfo
CFG_CMD_IMLS List all found images
CFG_CMD_IMMAP * IMMR dump support
CFG_CMD_IRQ * irqinfo
CFG_CMD_ITEST Integer/string test of 2 values
CFG_CMD_JFFS2 * JFFS2 Support
CFG_CMD_KGDB * kgdb
CFG_CMD_LOADB loadb
CFG_CMD_LOADS loads
CFG_CMD_MEMORY md, mm, nm, mw, cp, cmp, crc, base,
loop, loopw, mtest
CFG_CMD_MISC Misc functions like sleep etc
CFG_CMD_MMC * MMC memory mapped support
CFG_CMD_MII * MII utility commands
CFG_CMD_NAND * NAND support
CFG_CMD_NET bootp, tftpboot, rarpboot
CFG_CMD_PCI * pciinfo
CFG_CMD_PCMCIA * PCMCIA support
CFG_CMD_PING * send ICMP ECHO_REQUEST to network host
CFG_CMD_PORTIO * Port I/O
CFG_CMD_REGINFO * Register dump
CFG_CMD_RUN run command in env variable
CFG_CMD_SAVES * save S record dump
CFG_CMD_SCSI * SCSI Support
CFG_CMD_SDRAM * print SDRAM configuration information
(requires CFG_CMD_I2C)
CFG_CMD_SETGETDCR Support for DCR Register access (4xx only)
CFG_CMD_SPI * SPI serial bus support
CFG_CMD_USB * USB support
CFG_CMD_VFD * VFD support (TRAB)
CFG_CMD_BSP * Board SPecific functions
CFG_CMD_CDP * Cisco Discover Protocol support
-----------------------------------------------
CFG_CMD_ALL all
CONFIG_CMD_DFL Default configuration; at the moment
this is includes all commands, except
the ones marked with "*" in the list
above.
If you don't define CONFIG_COMMANDS it defaults to
CONFIG_CMD_DFL in include/cmd_confdefs.h. A board can
override the default settings in the respective
include file.
EXAMPLE: If you want all functions except of network
support you can write:
#define CONFIG_COMMANDS (CFG_CMD_ALL & ~CFG_CMD_NET)
Note: Don't enable the "icache" and "dcache" commands
(configuration option CFG_CMD_CACHE) unless you know
what you (and your U-Boot users) are doing. Data
cache cannot be enabled on systems like the 8xx or
8260 (where accesses to the IMMR region must be
uncached), and it cannot be disabled on all other
systems where we (mis-) use the data cache to hold an
initial stack and some data.
XXX - this list needs to get updated!
- Watchdog:
CONFIG_WATCHDOG
If this variable is defined, it enables watchdog
support. There must be support in the platform specific
code for a watchdog. For the 8xx and 8260 CPUs, the
SIU Watchdog feature is enabled in the SYPCR
register.
- U-Boot Version:
CONFIG_VERSION_VARIABLE
If this variable is defined, an environment variable
named "ver" is created by U-Boot showing the U-Boot
version as printed by the "version" command.
This variable is readonly.
- Real-Time Clock:
When CFG_CMD_DATE is selected, the type of the RTC
has to be selected, too. Define exactly one of the
following options:
CONFIG_RTC_MPC8xx - use internal RTC of MPC8xx
CONFIG_RTC_PCF8563 - use Philips PCF8563 RTC
CONFIG_RTC_MC146818 - use MC146818 RTC
CONFIG_RTC_DS1307 - use Maxim, Inc. DS1307 RTC
CONFIG_RTC_DS1337 - use Maxim, Inc. DS1337 RTC
CONFIG_RTC_DS1338 - use Maxim, Inc. DS1338 RTC
CONFIG_RTC_DS164x - use Dallas DS164x RTC
CONFIG_RTC_MAX6900 - use Maxim, Inc. MAX6900 RTC
Note that if the RTC uses I2C, then the I2C interface
must also be configured. See I2C Support, below.
- Timestamp Support:
When CONFIG_TIMESTAMP is selected, the timestamp
(date and time) of an image is printed by image
commands like bootm or iminfo. This option is
automatically enabled when you select CFG_CMD_DATE .
- Partition Support:
CONFIG_MAC_PARTITION and/or CONFIG_DOS_PARTITION
and/or CONFIG_ISO_PARTITION
If IDE or SCSI support is enabled (CFG_CMD_IDE or
CFG_CMD_SCSI) you must configure support for at least
one partition type as well.
- IDE Reset method:
CONFIG_IDE_RESET_ROUTINE - this is defined in several
board configurations files but used nowhere!
CONFIG_IDE_RESET - is this is defined, IDE Reset will
be performed by calling the function
ide_set_reset(int reset)
which has to be defined in a board specific file
- ATAPI Support:
CONFIG_ATAPI
Set this to enable ATAPI support.
- LBA48 Support
CONFIG_LBA48
Set this to enable support for disks larger than 137GB
Also look at CFG_64BIT_LBA ,CFG_64BIT_VSPRINTF and CFG_64BIT_STRTOUL
Whithout these , LBA48 support uses 32bit variables and will 'only'
support disks up to 2.1TB.
CFG_64BIT_LBA:
When enabled, makes the IDE subsystem use 64bit sector addresses.
Default is 32bit.
- SCSI Support:
At the moment only there is only support for the
SYM53C8XX SCSI controller; define
CONFIG_SCSI_SYM53C8XX to enable it.
CFG_SCSI_MAX_LUN [8], CFG_SCSI_MAX_SCSI_ID [7] and
CFG_SCSI_MAX_DEVICE [CFG_SCSI_MAX_SCSI_ID *
CFG_SCSI_MAX_LUN] can be adjusted to define the
maximum numbers of LUNs, SCSI ID's and target
devices.
CFG_SCSI_SYM53C8XX_CCF to fix clock timing (80Mhz)
- NETWORK Support (PCI):
CONFIG_E1000
Support for Intel 8254x gigabit chips.