Subversion Repositories openrisc_2011-10-31

# ====================================================================
#
#      hal_mips.cdl
#
#      MIPS architectural HAL package configuration data
#
# ====================================================================
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## -------------------------------------------
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# ====================================================================
######DESCRIPTIONBEGIN####
#
# Author(s):      jskov
# Original data:  bartv, nickg
# Contributors:
# Date:           1999-11-02
#
#####DESCRIPTIONEND####
#
# ====================================================================

cdl_package CYGPKG_HAL_MIPS {
    display "MIPS architecture"
    parent        CYGPKG_HAL
    hardware
    include_dir   cyg/hal
    define_header hal_mips.h
    description   "
        The MIPS architecture HAL package provides generic support
        for this processor architecture. It is also necessary to
        select a CPU variant and a specific target platform HAL
        package."

    cdl_interface CYGINT_HAL_MIPS_VARIANT {
        display  "Number of variant implementations in this configuration"
        requires 1 == CYGINT_HAL_MIPS_VARIANT
    }

    compile       hal_misc.c context.S mips-stub.c mipsfp.c
    compile       hal_syscall.c

    make {
        <PREFIX>/lib/vectors.o : <PACKAGE>/src/vectors.S
        $(CC) -Wp,-MD,vectors.tmp $(INCLUDE_PATH) $(CFLAGS) -c -o $@ $<
        @echo $@ ": \\" > $(notdir $@).deps
        @tail +2 vectors.tmp >> $(notdir $@).deps
        @echo >> $(notdir $@).deps
        @rm vectors.tmp
    }

    define_proc {
        puts $::cdl_header "#define HAL_ARCH_PROGRAM_NEW_STACK hal_arch_program_new_stack"
    }

    cdl_option CYGHWR_HAL_MIPS_CPU_FREQ {
        display "CPU frequency"
        flavor  data
        legal_values 0 to 1000000
        default_value 50
        description "
           This option contains the frequency of the CPU in MegaHertz.
           Choose the frequency to match the processor you have. This
           may affect thing like serial device, interval clock and
           memory access speed settings."
    }

    cdl_option CYGDBG_HAL_MIPS_DEBUG_GDB_CTRLC_SUPPORT {
        display "Architecture GDB CTRLC support"
        calculated { CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT || CYGDBG_HAL_DEBUG_GDB_BREAK_SUPPORT }
        active_if { CYGINT_HAL_DEBUG_GDB_CTRLC_UNSUPPORTED == 0 }
        description "
            If either the CTRLC or BREAK support options in hal.h are set
            then set our own option to turn on shared generic support for
            control C handling."
    }

    cdl_option CYGSEM_HAL_MIPS_EMULATE_UNIMPLEMENTED_FPU_OPS {
        display  "Emulate unimplemented FPU opcodes"
        flavor   bool
        default_value 1
        description "
           Enabling this option will include a hook in the exception
           processing so that Unimplemented Operation FPU exceptions
           may be handled. This option has no effect if there is no
           hardware floating-point unit. Note that not all situations
           in which an exception is raised may be handled. If not, the
           exception will be passed on as normal through the standard
           exception delivery mechanism."
    }

    cdl_interface CYGINT_HAL_MIPS_STUB_REPRESENT_32BIT_AS_64BIT {
        display  "Represent 32-bit registers as 64-bit to GDB"
        flavor booldata
        description "
        This interface may be implemented by MIPS variant or platform HALs
        to instruct the MIPS stub to interwork correctly with GDB which
        expects 64-bit register values, even in application code which has
        been compiled as 32-bit.  Do not use this for real 64-bit code."
    }

    cdl_interface CYGINT_HAL_MIPS_INTERRUPT_RETURN_KEEP_SR_IM {
        display  "Interrupt return keeps interrupt mask bits in SR"
        description "
        On some MIPS variants, the status register (SR) contains a number
        of interrupt mask bits (IM\[0..7\]).  Default behavior is to restore
        the whole SR over an interrupt.  This means that if the ISR
        modifies those bits, the change is lost when the interrupt returns.
        If this interface is implemented, changes made to the SR IM bits by
        an ISR will instead be preserved.
        Variants whose HAL_INTERRUPT_MASK() routines (et al) modify the IM
        bits in the SR should implement this interface to get the necessary
        preserving behavior."
    }

    cdl_component CYGPKG_REDBOOT_MIPS_OPTIONS {
        display       "Redboot for MIPS 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 CYGSEM_REDBOOT_MIPS_LINUX_BOOT {
            active_if      CYGBLD_BUILD_REDBOOT_WITH_EXEC
            display        "Support booting Linux via RedBoot"
            flavor         bool
            default_value  1
            description    "
               This option allows RedBoot to support booting of a Linux kernel."
            compile -library=libextras.a redboot_linux_exec.c

            cdl_option CYGDAT_REDBOOT_MIPS_LINUX_BOOT_ENTRY {
                display        "Default kernel entry address"
                flavor         data
                default_value  0x80100750
            }

            cdl_option CYGDAT_REDBOOT_MIPS_LINUX_BOOT_ARGV_ADDR {
                display        "Default argv address"
                flavor         data
                default_value  0x80080000
            }

            cdl_option CYGDAT_REDBOOT_MIPS_LINUX_BOOT_COMMAND_LINE {
                display        "Default COMMAND_LINE"
                flavor         data
                default_value  { "" }
            }
        }
    }

}