X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=README;h=a45181961d284e0bac73bddebf61c68b74344072;hb=e18a1061a8630cb67995fdf99afd3fb50d1b187d;hp=32a5d686921505e9aec29f0c36c610ca859278ad;hpb=34a7ceeff449be015a37d0e3f3178ca313618349;p=platform%2Fkernel%2Fu-boot.git diff --git a/README b/README index 32a5d68..a451819 100644 --- a/README +++ b/README @@ -132,6 +132,7 @@ Directory Hierarchy: - 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 @@ -156,12 +157,14 @@ Directory Hierarchy: - 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 +- libfdt Library files to support flattened device trees - net Networking code - post Power On Self Test - rtc Real Time Clock drivers @@ -256,6 +259,9 @@ The following options need to be configured: ---------------------- CONFIG_NIOS2 + AVR32 based CPUs: + ---------------------- + CONFIG_AT32AP - Board Type: Define exactly one of @@ -325,6 +331,15 @@ The following options need to be configured: 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 @@ -416,12 +431,23 @@ The following options need to be configured: expect it to be in bytes, others in MB. Define CONFIG_MEMSIZE_IN_BYTES to make it in bytes. - CONFIG_OF_FLAT_TREE + CONFIG_OF_LIBFDT / 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. + passed using flattened device trees (based on open firmware + concepts). + + CONFIG_OF_LIBFDT + * New libfdt-based support + * Adds the "fdt" command + * The bootm command does _not_ modify the fdt + + CONFIG_OF_FLAT_TREE + * Deprecated, see CONFIG_OF_LIBFDT + * Original ft_build.c-based support + * Automatically modifies the dft as part of the bootm command + * The environment variable "disable_of", when set, + disables this functionality. CONFIG_OF_FLAT_TREE_MAX_SIZE @@ -434,13 +460,16 @@ The following options need to be configured: 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_LIBFDT - enables the "fdt bd_t" command + * CONFIG_OF_FLAT_TREE - 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_LIBFDT - enables the "fdt bd_t" command + * CONFIG_OF_FLAT_TREE - The resulting flat device tree + will have a copy of u-boot's environment variables CONFIG_OF_BOARD_SETUP @@ -512,7 +541,7 @@ The following options need to be configured: CFG_CONSOLE_BLINK_COUNT blink interval (cf. i8042.c) CONFIG_CONSOLE_TIME display time/date info in upper right corner - (requires CFG_CMD_DATE) + (requires CONFIG_CMD_DATE) CONFIG_VIDEO_LOGO display Linux logo in upper left corner CONFIG_VIDEO_BMP_LOGO use bmp_logo.h instead of @@ -616,100 +645,96 @@ The following options need to be configured: 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) +- Kgdb Serial Baudrate: (if CONFIG_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. + Monitor commands can be included or excluded + from the build by using the #include files + "config_cmd_all.h" and #undef'ing unwanted + commands, or using "config_cmd_default.h" + and augmenting with additional #define's + for wanted commands. + + The default command configuration includes all commands + except those marked below with a "*". + + CONFIG_CMD_ASKENV * ask for env variable + CONFIG_CMD_AUTOSCRIPT Autoscript Support + CONFIG_CMD_BDI bdinfo + CONFIG_CMD_BEDBUG * Include BedBug Debugger + CONFIG_CMD_BMP * BMP support + CONFIG_CMD_BSP * Board specific commands + CONFIG_CMD_BOOTD bootd + CONFIG_CMD_CACHE * icache, dcache + CONFIG_CMD_CONSOLE coninfo + CONFIG_CMD_DATE * support for RTC, date/time... + CONFIG_CMD_DHCP * DHCP support + CONFIG_CMD_DIAG * Diagnostics + CONFIG_CMD_DOC * Disk-On-Chip Support + 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_FDC * Floppy Disk Support + CONFIG_CMD_FAT * FAT partition support + CONFIG_CMD_FDOS * Dos diskette Support + CONFIG_CMD_FLASH flinfo, erase, protect + CONFIG_CMD_FPGA FPGA device initialization support + CONFIG_CMD_HWFLOW * RTS/CTS hw flow control + CONFIG_CMD_I2C * I2C serial bus support + CONFIG_CMD_IDE * IDE harddisk support + CONFIG_CMD_IMI iminfo + CONFIG_CMD_IMLS List all found images + CONFIG_CMD_IMMAP * IMMR dump support + CONFIG_CMD_IRQ * irqinfo + CONFIG_CMD_ITEST Integer/string test of 2 values + CONFIG_CMD_JFFS2 * JFFS2 Support + CONFIG_CMD_KGDB * kgdb + CONFIG_CMD_LOADB loadb + CONFIG_CMD_LOADS loads + CONFIG_CMD_MEMORY md, mm, nm, mw, cp, cmp, crc, base, + loop, loopw, mtest + CONFIG_CMD_MISC Misc functions like sleep etc + CONFIG_CMD_MMC * MMC memory mapped support + CONFIG_CMD_MII * MII utility commands + CONFIG_CMD_NAND * NAND support + CONFIG_CMD_NET bootp, tftpboot, rarpboot + CONFIG_CMD_PCI * pciinfo + CONFIG_CMD_PCMCIA * PCMCIA support + CONFIG_CMD_PING * send ICMP ECHO_REQUEST to network + host + CONFIG_CMD_PORTIO * Port I/O + CONFIG_CMD_REGINFO * Register dump + CONFIG_CMD_RUN run command in env variable + CONFIG_CMD_SAVES * save S record dump + CONFIG_CMD_SCSI * SCSI Support + CONFIG_CMD_SDRAM * print SDRAM configuration information + (requires CONFIG_CMD_I2C) + CONFIG_CMD_SETGETDCR Support for DCR Register access + (4xx only) + CONFIG_CMD_SPI * SPI serial bus support + CONFIG_CMD_USB * USB support + CONFIG_CMD_VFD * VFD support (TRAB) + CONFIG_CMD_BSP * Board SPecific functions + CONFIG_CMD_CDP * Cisco Discover Protocol support + CONFIG_CMD_FSL * Microblaze FSL support + EXAMPLE: If you want all functions except of network support you can write: - #define CONFIG_COMMANDS (CFG_CMD_ALL & ~CFG_CMD_NET) + #include "config_cmd_all.h" + #undef CONFIG_CMD_NET + Other Commands: + fdt (flattened device tree) command: CONFIG_OF_LIBFDT Note: Don't enable the "icache" and "dcache" commands - (configuration option CFG_CMD_CACHE) unless you know + (configuration option CONFIG_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 @@ -737,7 +762,7 @@ The following options need to be configured: - Real-Time Clock: - When CFG_CMD_DATE is selected, the type of the RTC + When CONFIG_CMD_DATE is selected, the type of the RTC has to be selected, too. Define exactly one of the following options: @@ -758,14 +783,14 @@ The following options need to be configured: 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 . + automatically enabled when you select CONFIG_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 + If IDE or SCSI support is enabled (CONFIG_CMD_IDE or + CONFIG_CMD_SCSI) you must configure support for at least one partition type as well. - IDE Reset method: @@ -875,8 +900,8 @@ The following options need to be configured: enable this define CONFIG_MMC. The MMC can be accessed from the boot prompt by mapping the device to physical memory similar to flash. Command line is - enabled with CFG_CMD_MMC. The MMC driver also works with - the FAT fs. This is enabled with CFG_CMD_FAT. + enabled with CONFIG_CMD_MMC. The MMC driver also works with + the FAT fs. This is enabled with CONFIG_CMD_FAT. - Journaling Flash filesystem support: CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE, @@ -1188,12 +1213,17 @@ The following options need to be configured: include the appropriate I2C driver for the selected cpu. This will allow you to use i2c commands at the u-boot - command line (as long as you set CFG_CMD_I2C in + command line (as long as you set CONFIG_CMD_I2C in CONFIG_COMMANDS) and communicate with i2c based realtime 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 @@ -1298,6 +1328,52 @@ The following options need to be configured: 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. + + CFG_RTC_BUS_NUM + + If defined, then this indicates the I2C bus number for the RTC. + If not defined, then U-Boot assumes that RTC is on I2C bus 0. + + CFG_DTT_BUS_NUM + + If defined, then this indicates the I2C bus number for the DTT. + If not defined, then U-Boot assumes that DTT 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 @@ -1452,10 +1528,14 @@ The following options need to be configured: 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 @@ -2191,6 +2271,24 @@ Low Level (hardware related) configuration options: 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. @@ -2223,7 +2321,7 @@ Low Level (hardware related) configuration options: - CONFIG_LOOPW Add the "loopw" memory command. This only takes effect if - the memory commands are activated globally (CFG_CMD_MEM). + the memory commands are activated globally (CONFIG_CMD_MEM). - CONFIG_MX_CYCLIC Add the "mdc" and "mwc" memory commands. These are cyclic @@ -2237,7 +2335,7 @@ Low Level (hardware related) configuration options: This command will write 12345678 to address 100 all 10 ms. This only takes effect if the memory commands are activated - globally (CFG_CMD_MEM). + globally (CONFIG_CMD_MEM). - CONFIG_SKIP_LOWLEVEL_INIT - CONFIG_SKIP_RELOCATE_UBOOT @@ -2294,17 +2392,17 @@ configurations; the following names are supported: csb272_config lwmon_config sbc8260_config CU824_config MBX860T_config sbc8560_33_config DUET_ADS_config MBX_config sbc8560_66_config - EBONY_config MPC8260ADS_config SM850_config - ELPT860_config MPC8540ADS_config SPD823TS_config - ESTEEM192E_config MPC8540EVAL_config stxgp3_config - ETX094_config MPC8560ADS_config SXNI855T_config - FADS823_config NETVIA_config TQM823L_config - FADS850SAR_config omap1510inn_config TQM850L_config - FADS860T_config omap1610h2_config TQM855L_config - FPS850L_config omap1610inn_config TQM860L_config - omap5912osk_config walnut_config - omap2420h4_config Yukon8220_config - ZPC1900_config + EBONY_config mpc7448hpc2_config SM850_config + ELPT860_config MPC8260ADS_config SPD823TS_config + ESTEEM192E_config MPC8540ADS_config stxgp3_config + ETX094_config MPC8540EVAL_config SXNI855T_config + FADS823_config NMPC8560ADS_config TQM823L_config + FADS850SAR_config NETVIA_config TQM850L_config + FADS860T_config omap1510inn_config TQM855L_config + FPS850L_config omap1610h2_config TQM860L_config + omap1610inn_config walnut_config + omap5912osk_config Yukon8220_config + omap2420h4_config ZPC1900_config Note: for some board special configuration names may exist; check if additional information is available from the board vendor; for @@ -2727,9 +2825,9 @@ defines the following image properties: 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 @@ -3096,11 +3194,11 @@ loadaddr=200000 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 + 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 + Entry Point: 00000000 Verifying Checksum ... OK Uncompressing Kernel Image ... OK Booting using flat device tree at 0x300000