redboot.ebsa285

Intel XScale PXA255 引导Linux的Redboot 版bootloader源代码！

        You have now updated your board completely.  Phew!



5. To update RedBoot with a new version of RedBoot, it is necessary to run
   a RAM-based version of RedBoot which itself re-writes the ROM-based one,
   because you can't re-write the code that is executing at the time.

   RedBoot> fi lo RedBoot[backup]
   RedBoot> g
   +
   RedBoot(tm) debug environment - built 07:45:57, Aug  7 2000
   Copyright (C) 2000, Red Hat, Inc.
   
   RAM: 0x00000000-0x01000000
   FLASH: 0x41000000 - 0x41400000, 16 blocks of 0x00040000 bytes ea.
   IP: 192.168.1.25, Default server: 192.168.1.101
   show tcp = 0x00030d48
   RedBoot> 
   
     .. continue with step 3, using whatever your new boot image is called
        in the TFTP-place, in .srec format.


You probably also want to set up then environment with your own IP
addresses and so on.  Recall that this IP address is the one you use for
GDB to talk to the board, not the IP address which the eCos application
will take on (by BOOTP/DHCP or whatever means according to configury as
usual).

   RedBoot> fconfig
   Network debug at boot time: false 
   Use BOOTP for network configuration: false 
   Local IP address: 192.168.1.25 
   Default server IP address: 192.168.1.101 
   GDB connection port: 1000 
   Run script at boot: false 
   RedBoot> 


Building RedBoot
----------------

To rebuild RedBoot from source, first cut out the attached configuration
export file "redboot.RAM" and save it somewhere, say /tmp/redboot.RAM

  mkdir redboot
  cd redboot
  ecosconfig new ebsa redboot
  ecosconfig import /tmp/redboot.RAM
  ecosconfig tree
  make

To build the ROM version, in a different build/config directory, just
change the startup mode (at the end of the export file) and add an enable
of CYGSEM_HAL_ROM_MONITOR, or use the attached config export redboot.ROM.

The resulting files will be, in each of the ROM and RAM startup build
places:
   70456     ..../install/bin/redboot.bin
  433104     ..../install/bin/redboot.elf
   91407     ..../install/bin/redboot.img
  194732     ..../install/bin/redboot.srec

The .elf and .srec files have the obvious relationship to those supplied in
the "loaders/arm-ebsa285" directory in the install.

Here are the redboot.RAM and .ROM configuration exports:

=========================== redboot.RAM =====================================
cdl_savefile_version 1;
cdl_savefile_command cdl_savefile_version {};
cdl_savefile_command cdl_savefile_command {};
cdl_savefile_command cdl_configuration { description hardware template package };
cdl_savefile_command cdl_package { value_source user_value wizard_value inferred_value };
cdl_savefile_command cdl_component { value_source user_value wizard_value inferred_value };
cdl_savefile_command cdl_option { value_source user_value wizard_value inferred_value };
cdl_savefile_command cdl_interface { value_source user_value wizard_value inferred_value };

cdl_configuration eCos {
    description "" ;
    hardware    ebsa285 ;
    template    redboot ;
    package -hardware CYGPKG_HAL_ARM current ;
    package -hardware CYGPKG_HAL_ARM_EBSA285 current ;
    package -hardware CYGPKG_IO_PCI current ;
    package -hardware CYGPKG_DEVS_ETH_ARM_EBSA285 current ;
    package -hardware CYGPKG_IO_SERIAL_ARM_EBSA285 current ;
    package -hardware CYGPKG_DEVICES_WATCHDOG_ARM_EBSA285 current ;
    package -template CYGPKG_HAL current ;
    package -template CYGPKG_INFRA current ;
    package -template CYGPKG_REDBOOT current ;
    package CYGPKG_IO_FLASH current ;
    package CYGPKG_IO_ETH_DRIVERS current ;
    package CYGPKG_DEVS_FLASH_EBSA285 current ;
};

cdl_option CYGBLD_BUILD_GDB_STUBS {
    user_value 0
};

cdl_option CYGDBG_DEVS_ETH_ARM_EBSA285_CHATTER {
    user_value 0
};

cdl_option CYGNUM_DEVS_ETH_ARM_EBSA285_DEV_COUNT {
    user_value 1
};

cdl_option CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS {
    inferred_value 1
};

cdl_option CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT {
    inferred_value 0
};

cdl_option CYGSEM_HAL_VIRTUAL_VECTOR_DIAG {
    user_value 1
};

cdl_option CYGSEM_HAL_USE_ROM_MONITOR {
    inferred_value 0 0
};

cdl_option CYGBLD_BUILD_REDBOOT {
    user_value 1
};

cdl_component CYG_HAL_STARTUP {
    user_value RAM
};
=========================== redboot.RAM =====================================
=========================== redboot.ROM =====================================
cdl_savefile_version 1;
cdl_savefile_command cdl_savefile_version {};
cdl_savefile_command cdl_savefile_command {};
cdl_savefile_command cdl_configuration { description hardware template package };
cdl_savefile_command cdl_package { value_source user_value wizard_value inferred_value };
cdl_savefile_command cdl_component { value_source user_value wizard_value inferred_value };
cdl_savefile_command cdl_option { value_source user_value wizard_value inferred_value };
cdl_savefile_command cdl_interface { value_source user_value wizard_value inferred_value };

cdl_configuration eCos {
    description "" ;
    hardware    ebsa285 ;
    template    redboot ;
    package -hardware CYGPKG_HAL_ARM current ;
    package -hardware CYGPKG_HAL_ARM_EBSA285 current ;
    package -hardware CYGPKG_IO_PCI current ;
    package -hardware CYGPKG_DEVS_ETH_ARM_EBSA285 current ;
    package -hardware CYGPKG_IO_SERIAL_ARM_EBSA285 current ;
    package -hardware CYGPKG_DEVICES_WATCHDOG_ARM_EBSA285 current ;
    package -template CYGPKG_HAL current ;
    package -template CYGPKG_INFRA current ;
    package -template CYGPKG_REDBOOT current ;
    package CYGPKG_IO_FLASH current ;
    package CYGPKG_IO_ETH_DRIVERS current ;
    package CYGPKG_DEVS_FLASH_EBSA285 current ;
};

cdl_option CYGBLD_BUILD_GDB_STUBS {
    user_value 0
};

cdl_option CYGDBG_DEVS_ETH_ARM_EBSA285_CHATTER {
    user_value 0
};

cdl_option CYGNUM_DEVS_ETH_ARM_EBSA285_DEV_COUNT {
    user_value 1
};

cdl_option CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS {
    inferred_value 1
};

cdl_option CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT {
    inferred_value 0
};

cdl_option CYGSEM_HAL_VIRTUAL_VECTOR_DIAG {
    user_value 1
};

cdl_option CYGSEM_HAL_USE_ROM_MONITOR {
    inferred_value 0 0
};

cdl_option CYGBLD_BUILD_REDBOOT {
    user_value 1
};

cdl_component CYG_HAL_STARTUP {
    user_value ROM
};

cdl_option CYGSEM_HAL_ROM_MONITOR {
    user_value 1
};

=========================== redboot.ROM =====================================

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