376 lines
13 KiB
Plaintext
376 lines
13 KiB
Plaintext
U-Boot Changes due to PIP405 Port:
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===================================
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Changed files:
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==============
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- MAKEALL added PIP405
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- makefile added PIP405
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- common/Makefile added Floppy disk and SCSI support
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- common/board.c added PIP405, SCSI support, get_PCI_freq()
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- common/bootm.c added IH_OS_U_BOOT, IH_TYPE_FIRMWARE
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- common/cmd_i2c.c added "defined(CONFIG_PIP405)"
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- common/cmd_ide.c changed div. functions to work with block device
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description
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added ATAPI support
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- common/command.c added SCSI and Floppy support
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- common/console.c replaced // with /* comments
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added console settings from environment
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- common/devices.c added ISA keyboard init
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- common/main.c corrected the read of bootdelay
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- cpu/ppc4xx/405gp_pci.c excluded file from PIP405
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- cpu/ppc4xx/i2c.c added 16bit read write I2C support
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added page write
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- cpu/ppc4xx/speed.c added get_PCI_freq
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- cpu/ppc4xx/start.S added CONFIG_IDENT_STRING
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- disk/Makefile added part_iso for CD support
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- disk/part.c changed to work with block device description
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added ISO CD support
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added dev_print (was ide_print in cmd_ide.c)
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- disk/part_dos.c changed to work with block device description
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- disk/part_mac.c changed to work with block device description
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- include/ata.h added ATAPI commands
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- include/cmd_bsp.h added PIP405 commands definitions
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- include/cmd_condefs.h added Floppy and SCSI support
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- include/cmd_disk.h changed to work with block device description
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- include/config_LANTEC.h excluded CONFIG_CMD_FDC and CONFIG_CMD_SCSI
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- include/config_hymod.h excluded CONFIG_CMD_FDC and CONFIG_CMD_SCSI
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- include/flash.h added INTEL_ID_28F320C3T 0x88C488C4
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- include/i2c.h added "defined(CONFIG_PIP405)"
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- include/image.h added IH_OS_U_BOOT, IH_TYPE_FIRMWARE
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- include/u-boot.h moved partitions functions definitions to part.h
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added "defined(CONFIG_PIP405)"
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added get_PCI_freq() definition
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- rtc/Makefile added MC146818 RTC support
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- tools/mkimage.c added IH_OS_U_BOOT, IH_TYPE_FIRMWARE
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Added files:
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============
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- board/pip405 directory for PIP405
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- board/pip405/cmd_pip405.c board specific commands
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- board/pip405/config.mk config make
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- board/pip405/flash.c flash support
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- board/pip405/init.s start-up
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- board/pip405/kbd.c keyboard support
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- board/pip405/kbd.h keyboard support
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- board/pip405/Makefile Makefile
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- board/pip405/pci_piix4.h southbridge definitions
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- board/pip405/pci_pip405.c PCI support for PIP405
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- board/pip405/pci_pip405.h PCI support for PIP405
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- board/pip405/pip405.c PIP405 board init
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- board/pip405/pip405.h PIP405 board init
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- board/pip405/pip405_isa.c ISA support
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- board/pip405/pip405_isa.h ISA support
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- board/pip405/u-boot.lds Linker description
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- board/pip405/u-boot.lds.debugLinker description debug
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- board/pip405/sym53c8xx.c SYM53C810A support
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- board/pip405/sym53c8xx_defs.h SYM53C810A definitions
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- board/pip405/vga_table.h definitions of tables for VGA
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- board/pip405/video.c CT69000 support
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- board/pip405/video.h CT69000 support
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- common/cmd_fdc.c Floppy disk support
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- common/cmd_scsi.c SCSI support
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- disk/part_iso.c ISO CD ROM support
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- disk/part_iso.h ISO CD ROM support
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- include/cmd_fdc.h command forFloppy disk support
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- include/cmd_scsi.h command for SCSI support
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- include/part.h partitions functions definitions
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(was part of u-boot.h)
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- include/scsi.h SCSI support
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- rtc/mc146818.c MC146818 RTC support
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New Config Switches:
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====================
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For detailed description, refer to the corresponding paragraph in the
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section "Changes".
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New Commands:
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-------------
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CONFIG_CMD_SCSI SCSI Support
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CONFIG_CMF_FDC Floppy disk support
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IDE additions:
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--------------
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CONFIG_IDE_RESET_ROUTINE defines that instead of a reset Pin,
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the routine ide_set_reset(int idereset) is used.
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ATAPI support (experimental)
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----------------------------
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CONFIG_ATAPI enables ATAPI Support
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SCSI support (experimental) only SYM53C8xx supported
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----------------------------------------------------
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CONFIG_SCSI_SYM53C8XX type of SCSI controller
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CONFIG_SYS_SCSI_MAX_LUN 8 number of supported LUNs
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CONFIG_SYS_SCSI_MAX_SCSI_ID 7 maximum SCSI ID (0..6)
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CONFIG_SYS_SCSI_MAX_DEVICE CONFIG_SYS_SCSI_MAX_SCSI_ID * CONFIG_SYS_SCSI_MAX_LUN
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maximum of Target devices (multiple LUN support
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for boot)
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ISO (CD-Boot) partition support (Experimental)
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----------------------------------------------
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CONFIG_ISO_PARTITION CD-boot support
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RTC
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----
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CONFIG_RTC_MC146818 MC146818 RTC support
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Keyboard:
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---------
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CONFIG_ISA_KEYBOARD Standard (PC-Style) Keyboard support
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Video:
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------
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CONFIG_VIDEO_CT69000 Enable Chips & Technologies 69000 Video chip
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CONFIG_VIDEO must be defined also
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External peripheral base address:
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---------------------------------
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CONFIG_SYS_ISA_IO_BASE_ADDRESS address of all ISA-bus related parts
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_must_ be defined for ISA-bus parts
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Identify:
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---------
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CONFIG_IDENT_STRING added to the U_BOOT_VERSION String
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Environment / Console:
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----------------------
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CONFIG_SYS_CONSOLE_IS_IN_ENV if defined, stdin, stdout and stderr used from
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the values stored in the evironment.
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CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE if defined, console_overwrite() decides if the
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values stored in the environment or the standard
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serial in/out put should be assigned to the console.
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CONFIG_SYS_CONSOLE_ENV_OVERWRITE if defined, the start-up console switching
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are stored in the environment.
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PIP405 specific:
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----------------
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CONFIG_PORT_ADDR address used to read boot configuration
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MULTI_PURPOSE_SOCKET_ADDR address of the multi purpose socked
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SDRAM_EEPROM_WRITE_ADDRESS addresses of the serial presence detect
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SDRAM_EEPROM_READ_ADDRESS EEPROM on the SDRAM module.
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Changes:
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========
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Added Devices:
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==============
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Floppy support:
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---------------
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Support of a standard floppy disk controller at address CONFIG_SYS_ISA_IO_BASE_ADDRESS
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+ 0x3F0. Enabled with define CONFIG_CMD_FDC. Reads a unformated floppy disk
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with a image header (see: mkimage). No interrupts and no DMA are used for this.
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Added files:
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- common/cmd_fdc.c
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- include/cmd_fdc.h
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SCSI support:
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-------------
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Support for Symbios SYM53C810A chip. Implemented as follows:
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- without disconnect
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- only asynchrounous
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- multiple LUN support (caution, needs a lot of RAM. define CONFIG_SYS_SCSI_MAX_LUN 1 to
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save RAM)
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- multiple SCSI ID support
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- no write support
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- analyses the MAC, DOS and ISO pratition similar to the IDE support
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- allows booting from SCSI devices similar to the IDE support.
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The device numbers are not assigned like they are within the IDE support. The first
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device found will get the number 0, the next 1 etc. If all SCSI IDs (0..6) and all
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LUNs (8) are enabled, 56 boot devices are possible. This uses a lot of RAM since the
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device descriptors are not yet dynamically allocated. 56 boot devices are overkill
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anyway. Please refer to the section "Todo" chapter "block device support enhancement".
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The SYM53C810A uses 1 Interrupt and must be able of mastering the PCI bus.
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Added files:
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- common/cmd_scsi.c
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- common/board.c
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- include/cmd_scsi.h
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- include/scsi.h
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- board/pip405/sym53c8xx.c
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- board/pip405/sym53c8xx_defs.h
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ATAPI support (IDE changes):
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----------------------------
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Added ATAPI support (with CONFIG_ATAPI) in the file cmd_ide.c.
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To support a hardreset, when the IDE reset pin is not connected to the
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CONFIG_SYS_PC_IDE_RESET pin, the switch CONFIG_IDE_RESET_ROUTINE has been added. When
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this switch is enabled the routine void ide_set_reset(int idereset) must be
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within the board specific files.
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Only read from ATAPI devices are supported.
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Found out that the function trim_trail cuts off the last character if the whole
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string is filled. Added function cpy_ident instead, which trims also leading
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spaces and copies the string in the buffer.
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Changed files:
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- common/cmd_ide.c
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- include/ata.h
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ISO partition support:
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----------------------
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Added CD boot support for El-Torito bootable ISO CDs. The bootfile image must contain
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the U-Boot image header. Since CDs do not have "partitions", the boot partition is 0.
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The bootcatalog feature has not been tested so far. CD Boot is supported for ATAPI
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("diskboot") and SCSI ("scsiboot") devices.
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Added files:
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- disk/iso_part.c
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- disk/iso_part.h
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Block device changes:
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---------------------
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To allow the use of dos_part.c, mac_part.c and iso_part.c, the parameter
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block_dev_desc will be used when accessing the functions in these files. The block
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device descriptor (block_dev_desc) contains a pointer to the read routine of the
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device, which will be used to read blocks from the device.
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Renamed function ide_print to dev_print and moved it to the file disk/part.c to use
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it for IDE ATAPI and SCSI devices.
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Please refer to the section "Todo" chapter "block device support enhancement".
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Added files:
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- include/part.h
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changed files:
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- disk/dos_part.c
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- disk/dos_part.h
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- disk/mac_part.c
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- disk/mac_part.h
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- disk/part.c
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- common/cmd_ide.c
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- include/u-boot.h
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MC146818 RTC support:
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---------------------
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Added support for MC146818 RTC with defining CONFIG_RTC_MC146818. The ISA bus IO
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base address must be defined with CONFIG_SYS_ISA_IO_BASE_ADDRESS.
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Added files:
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- rtc/mc146818.c
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Standard ISA bus Keyboard support:
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----------------------------------
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Added support for the standard PC kyeboard controller. For the PIP405 the superIO
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controller must be set up previously. The keyboard uses the standard ISA IRQ, so
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the ISA PIC must also be set up.
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Added files:
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- board/pip405/kbd.c
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- board/pip405/kbd.h
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- board/pip405/pip405_isa.c
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- board/pip405/pip405_isa.h
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Chips and Technologie 69000 VGA controller support:
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---------------------------------------------------
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Added support for the CT69000 VGA controller.
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Added files:
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- board/pip405/video.c
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- board/pip405/video.h
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- board/pip405/vga_table.h
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Changed Items:
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==============
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Identify:
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---------
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Added the config variable CONFIG_IDENT_STRING which will be added to the
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"U_BOOT_VERSION __TIME__ DATE___ " String, to allows to identify intermidiate
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and custom versions.
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Changed files:
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- cpu/ppc4xx/start.s
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Firmware Image:
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---------------
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Added IH_OS_U_BOOT and IH_TYPE_FIRMWARE to the image definitions to allows the
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U-Boot update with prior CRC check.
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Changed files:
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- include/image.h
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- tools/mkimage.c
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- common/cmd_bootm.c
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Correct PCI Frequency for PPC405:
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---------------------------------
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Added function (in cpu/ppc4xx/speed.c) to get the PCI frequency for PPC405 CPU.
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The PCI Frequency will now be set correct in the board description in common/board.c.
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(was set to the busfreq before).
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Changed files:
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- cpu/ppc4xx/speed.c
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- common/board.c
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I2C Stuff:
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----------
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Added defined(CONFIG_PIP405) at several points in common/cmd_i2c.c.
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Added 16bit read/write support for I2C (PPC405), and page write to
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I2C EEPROM if defined CONFIG_SYS_EEPROM_PAGE_WRITE_ENABLE.
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Changed files:
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- cpu/ppc4xx/i2c.c
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- common/cmd_i2c.c
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Environment / Console:
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----------------------
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Although in README.console described, the U-Boot has not assinged the values
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found in the environment to the console. Corrected this behavior, but only if
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CONFIG_SYS_CONSOLE_IS_IN_ENV is defined.
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If CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE is defined, console_overwrite() decides if the
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values stored in the environment or the standard serial in/output should be
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assigned to the console. This is useful if the environment values are not correct.
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If CONFIG_SYS_CONSOLE_ENV_OVERWRITE is defined the devices assigned to the console at
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start-up time will be written to the environment. This means that if the
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environment values are overwritten by the overwrite_console() routine, they will be
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stored in the environment.
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Changed files:
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- common/console.c
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Correct bootdelay intepretation:
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--------------------------------
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Changed bootdelay read from the environment from simple_strtoul (unsigned) to
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simple_strtol (signed), to be able to get a bootdelay of -1.
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Changed files:
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- common/main.c
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Todo:
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=====
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Block device support enhancement:
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---------------------------------
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Consider to unify the block device handling. Instead of using diskboot for IDE,
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scsiboot for SCSI and fdcboot for floppy disks, it would make sense to use only
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one command ("devboot" ???) with a parameter of the desired device ("hda1", "sda1",
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"fd0" ???) to boot from. The other ide commands can be handled in the same way
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("dev hda read.." instead of "ide read.." or "dev sda read.." instead of
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"scsi read..."). Todo this, a common way of assign a block device to its name
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(first found ide device = hda, second found hdb etc., or hda is device 0 on bus 0,
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hdb is device 1 on bus 0 etc.) as well as the names (hdx for ide, sdx for scsi, fx for
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floppy ???) must be defined.
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Maybe there are better ideas to do this.
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Console assingment:
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-------------------
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Consider to initialize and assign the console stdin, stdout and stderr as soon as
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possible to see the boot messages also on an other console than serial.
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Todo for PIP405:
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================
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LCD support for VGA:
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--------------------
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Add LCD support for the CT69000
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Default environment:
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--------------------
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Consider to write a default environment to the OTP part of the EEPROM and use it
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if the normal environment is not valid. Useful for serial# and ethaddr values.
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Watchdog:
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---------
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Implement Watchdog.
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Files clean-up:
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---------------
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Following files needs to be cleaned up:
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- cmd_pip405.c
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- flash.c
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- pci_pip405.c
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- pip405.c
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- pip405_isa.c
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Consider to split up the files in their functions.
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