hal_i386_pc.cdl

eCos操作系统源码

     
    cdl_component CYGBLD_GLOBAL_OPTIONS {
        display "Global build options"
        flavor  none
        parent  CYGPKG_NONE
        description   "
	    Global build options including control over
	    compiler flags, linker flags and choice of toolchain."


        cdl_option CYGBLD_GLOBAL_COMMAND_PREFIX {
            display "Global command prefix"
            flavor  data
            no_define
            default_value { "i386-elf" }
            description "
                This option specifies the command prefix used when
                invoking the build tools. If your host operating system
                is Linux you can set this to empty to use your native tools.
                If so, your native gcc must be gcc-2.95.2 or later, and
                \"ld -v\" must report a version more recent than 2.9.1."
        }

        cdl_option CYGBLD_GLOBAL_CFLAGS {
            display "Global compiler flags"
            flavor  data
            no_define
            default_value { "-Wall -Wpointer-arith -Wstrict-prototypes -Winline -Wundef -Woverloaded-virtual -g -O2 -ffunction-sections -fdata-sections -fno-rtti -fno-exceptions -fvtable-gc -finit-priority" }
            description   "
                This option controls the global compiler flags which
                are used to compile all packages by
                default. Individual packages may define
                options which override these global flags."
        }

        cdl_option CYGBLD_GLOBAL_LDFLAGS {
            display "Global linker flags"
            flavor  data
            no_define
            default_value { "-g -nostdlib -Wl,--gc-sections -Wl,-static" }
            description   "
                This option controls the global linker flags. Individual
                packages may define options which override these global flags."
        }

        cdl_option CYGBLD_BUILD_GDB_STUBS {
            display "Build GDB stub loader image"
            default_value 0
            requires { CYG_HAL_STARTUP == "FLOPPY" }
            requires CYGSEM_HAL_ROM_MONITOR
            requires CYGBLD_BUILD_COMMON_GDB_STUBS
            requires CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
            requires ! CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT
            requires ! CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT
            requires ! CYGDBG_HAL_DEBUG_GDB_THREAD_SUPPORT
            requires ! CYGDBG_HAL_COMMON_INTERRUPTS_SAVE_MINIMUM_CONTEXT
            requires ! CYGDBG_HAL_COMMON_CONTEXT_SAVE_MINIMUM
            no_define
            description "
                This option enables the building of the GDB stubs for the
                board. The common HAL controls takes care of most of the
                build process, but the final conversion from ELF image to
                binary data is handled by the platform CDL, allowing
                relocation of the data if necessary."

            make -priority 320 {
                <PREFIX>/bin/gdb_module.bin : <PREFIX>/bin/gdb_module.img
                $(OBJCOPY) -O binary $< $@
            }
        }
    }

    cdl_component CYGHWR_MEMORY_LAYOUT {
        display "Memory layout"
        flavor data
        no_define
        calculated { CYG_HAL_STARTUP == "RAM"  ? "i386_pc_ram" : \
		     CYG_HAL_STARTUP == "ROM"  ? "i386_pc_rom" : \
		     CYG_HAL_STARTUP == "GRUB" ? "i386_pc_grub" : \
	                                         "i386_pc_floppy" }

        cdl_option CYGHWR_MEMORY_LAYOUT_LDI {
            display "Memory layout linker script fragment"
            flavor data
            no_define
            define -file system.h CYGHWR_MEMORY_LAYOUT_LDI
            calculated { CYG_HAL_STARTUP == "RAM"  ? "<pkgconf/mlt_i386_pc_ram.ldi>" : \
		         CYG_HAL_STARTUP == "ROM"  ? "<pkgconf/mlt_i386_pc_rom.ldi>" : \
		         CYG_HAL_STARTUP == "GRUB" ? "<pkgconf/mlt_i386_pc_grub.ldi>" : \
                                                     "<pkgconf/mlt_i386_pc_floppy.ldi>" }
        }

        cdl_option CYGHWR_MEMORY_LAYOUT_H {
            display "Memory layout header file"
            flavor data
            no_define
            define -file system.h CYGHWR_MEMORY_LAYOUT_H
            calculated { CYG_HAL_STARTUP == "RAM"  ? "<pkgconf/mlt_i386_pc_ram.h>" : \
		         CYG_HAL_STARTUP == "ROM"  ? "<pkgconf/mlt_i386_pc_rom.h>" : \
		         CYG_HAL_STARTUP == "GRUB" ? "<pkgconf/mlt_i386_pc_grub.h>" : \
                                                     "<pkgconf/mlt_i386_pc_floppy.h>" }
        }
    }

    cdl_option CYGSEM_HAL_ROM_MONITOR {
        display       "Behave as a ROM monitor"
        flavor        bool
        default_value 0
	
        parent        CYGPKG_HAL_ROM_MONITOR
        requires      { CYG_HAL_STARTUP == "FLOPPY" || CYG_HAL_STARTUP == "ROM" }
	requires      { !CYGHWR_HAL_I386_FPU_SWITCH_LAZY }
        description   "
            Enable this option if this program is to be used as a ROM monitor,
            i.e. applications will be loaded into RAM on the board, and this
            ROM monitor may process exceptions or interrupts generated from the
            application. This enables features such as utilizing a separate
            interrupt stack when exceptions are generated."
    }

    cdl_option CYGSEM_HAL_USE_ROM_MONITOR {
         display       "Work with a ROM monitor"
         flavor        booldata
         legal_values  { "Generic" "GDB_stubs" }
         default_value { CYG_HAL_STARTUP == "RAM" ? "GDB_stubs" : 0 }
         parent        CYGPKG_HAL_ROM_MONITOR
         requires      { CYG_HAL_STARTUP == "RAM" }
         description   "
             Support can be enabled for different varieties of ROM monitor.
             This support changes various eCos semantics such as the encoding
             of diagnostic output, or the overriding of hardware interrupt
             vectors.
             Firstly there is \"Generic\" support which prevents the HAL
             from overriding the hardware vectors that it does not use, to
             instead allow an installed ROM monitor to handle them. This is
             the most basic support which is likely to be common to most
             implementations of ROM monitor.
             \"GDB_stubs\" provides support when GDB stubs are included in
             the ROM monitor or boot ROM."
     }

    cdl_component CYGPKG_REDBOOT_HAL_OPTIONS {
        display       "Redboot HAL options"
        flavor        none
        no_define
        parent        CYGPKG_REDBOOT
        active_if     CYGPKG_REDBOOT
        description   "
            This option lists the target's requirements for a valid Redboot
            configuration."
    
        cdl_component CYGBLD_BUILD_REDBOOT_BIN {
            display       "Build RedBoot binary image"
            no_define
            default_value 1

            cdl_option CYGBLD_BUILD_REDBOOT_BIN_FLOPPY {
                display       "Build Redboot FLOPPY binary image"
                active_if     CYGBLD_BUILD_REDBOOT
                active_if     { CYG_HAL_STARTUP == "FLOPPY" }
                calculated    1
                no_define
                description "This option enables the conversion of the Redboot 
                             ELF image to a binary image suitable for
                             copying to a floppy disk."
        
                make -priority 325 {
                    <PREFIX>/bin/redboot.bin : <PREFIX>/bin/redboot.elf
                    $(OBJCOPY) -O binary $< $@
                }
            }
    
            cdl_option CYGBLD_BUILD_REDBOOT_BIN_ROM {
                display       "Build Redboot ROM binary image"
                active_if     CYGBLD_BUILD_REDBOOT
                active_if     { CYG_HAL_STARTUP == "ROM" }
                calculated    1
                no_define
                description "This option enables the conversion of the Redboot
                             ELF image to a binary image suitable for ROM
                             programming."
                
                make -priority 325 {
                    <PREFIX>/bin/redboot.bin : <PREFIX>/bin/redboot.elf
                    $(OBJCOPY) -O binary $< $(@:.bin=.img)
                    $(OBJCOPY) -O binary $(PREFIX)/bin/romboot.elf $(PREFIX)/bin/romboot.img
                    dd if=/dev/zero of=$@ bs=1024 count=64 conv=sync
                    dd if=$(@:.bin=.img) of=$@ bs=512 conv=notrunc,sync
                    dd if=$(PREFIX)/bin/romboot.img of=$@ bs=256 count=1 seek=255 conv=notrunc
                }
            }
        }            
    }     
}