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# ====================================================================

#

#      hal_mips.cdl

#

#      MIPS architectural HAL package configuration data

#

# ====================================================================

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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 {

        /lib/vectors.o : /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  { "" }

            }

        }

    }

}