hal_mips_tx39.cdl

来自「eCos操作系统源码」· CDL 代码 · 共 130 行

# ====================================================================
#
#      hal_mips_tx39.cdl
#
#      MIPS/TX39 variant 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_TX39 {
    display       "TX39 variant"
    parent        CYGPKG_HAL_MIPS
    hardware
    include_dir   cyg/hal
    define_header hal_mips_tx39.h
    description   "
           The TX39 architecture HAL package provides generic support
           for this processor architecture. It is also necessary to
           select a specific target platform HAL package."

    cdl_component CYGPKG_HAL_MIPS_TX3904 {
        display       "TX3904 microprocessor"
        default_value 1
        implements    CYGINT_HAL_MIPS_VARIANT
        description "
            The TMPR3904F microprocessor. This is an embedded part that in
            addition to the TX39 processor core has built in peripherals
            such as memory controllers, DMA controllers, serial ports and
            timers/counters."               

        cdl_option CYGHWR_HAL_MIPS_FPU {
            display    "Variant FPU support"
            calculated 0
        }

        cdl_option CYGPKG_HAL_MIPS_MSBFIRST {
            display    "CPU Variant big-endian"
            calculated 1
        }
    }

    define_proc {
        puts $::cdl_header "#include <pkgconf/hal_mips.h>"
    }

    cdl_option CYGHWR_HAL_MIPS_CPU_FREQ_ACTUAL {
        display       "Actual CPU frequency"
        calculated    (CYGHWR_HAL_MIPS_CPU_FREQ == 50 ? 49152000 :   \
                       CYGHWR_HAL_MIPS_CPU_FREQ == 66 ? 66355200 : 0 )
        flavor data
        legal_values  { 49152000 66355200 }
        description "
            Only the frequencies 50MHz and 66MHz are supported for this
            CPU variant."
    } 

    cdl_option CYGHWR_HAL_MIPS_TX3904_TRR_REQUIRES_SYNC {
        display       "Workaround for TX3904 Timer TRR register problem"
        flavor        bool
        default_value { (CYGHWR_HAL_MIPS_CPU_FREQ == 50) ? 1 : 0 }
        description "
            Early versions of the TX3904 CPU have a bug such that if
            coprocessor 0 (CP0) is busy outputting write buffer data, reads
            of the clock would return bad values. This option enables a
            workaround by not reading the clock until the write buffer
            is empty."
    } 

    compile       hal_diag.c var_misc.c variant.S

    make {
        <PREFIX>/lib/target.ld: <PACKAGE>/src/mips_tx39.ld
        $(CC) -E -P -Wp,-MD,target.tmp -DEXTRAS=1 -xc $(INCLUDE_PATH) $(CFLAGS) -o $@ $<
        @echo $@ ": \\" > $(notdir $@).deps
        @tail -n +2 target.tmp >> $(notdir $@).deps
        @echo >> $(notdir $@).deps
        @rm target.tmp
    }

    cdl_option CYGBLD_LINKER_SCRIPT {
        display "Linker script"
        flavor data
	no_define
        calculated  { "src/mips_tx39.ld" }
    }

}