From 77990ec71456341463965b756db1a9d671df5611 Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Sat, 23 Jan 2016 16:44:27 -0600 Subject: Obsolete and remove m68k/gen68302 closes #2543. --- c/src/lib/libbsp/m68k/gen68302/README | 150 ---------------------------------- 1 file changed, 150 deletions(-) delete mode 100644 c/src/lib/libbsp/m68k/gen68302/README (limited to 'c/src/lib/libbsp/m68k/gen68302/README') diff --git a/c/src/lib/libbsp/m68k/gen68302/README b/c/src/lib/libbsp/m68k/gen68302/README deleted file mode 100644 index 81a079d276..0000000000 --- a/c/src/lib/libbsp/m68k/gen68302/README +++ /dev/null @@ -1,150 +0,0 @@ -BSP NAME: gen68302 -BOARD: proprietary (see below for relevant information) -BUS: none -CPU FAMILY: MC68000 -COPROCESSORS: 68302 communications co-processor -MODE: not applicable - -DEBUG MONITOR: none - -PERIPHERALS -=========== -TIMERS: two 68302 timers, one 68302 watchdog timer - RESOLUTION: ? -SERIAL PORTS: three 68302 SCCs -REAL-TIME CLOCK: -DMA: built-in 68302, not used -VIDEO: none -SCSI: none -NETWORKING: none - -DRIVER INFORMATION -================== -CLOCK DRIVER: 68302 (TIMER1) -IOSUPP DRIVER: 68302 SCC2 -SHMSUPP: none -TIMER DRIVER: 68302 TIMER2 - -STDIO -===== -PORT: ? -ELECTRICAL: EIA-232 -BAUD: 9600 -BITS PER CHARACTER: 8 -PARITY: None -STOP BITS: 1 - -NOTES -===== - -Board description ------------------ -clock rate: 16 MHz -bus width: 16 bits -ROM: 128 kbyte (flash, 0 wait states, chip select 0) -RAM: 256 kbyte (static, 0 wait states, chip select 1) - -The 68302's built-in DRAM refresh controller circuitry is neither used -nor configured at startup. - -Host System ------------ -HP 9000/715, HP-UX 9.05 -gcc-2.6.3 -binutils-2.5.2 - - -Verification ------------- -The 1-ms clock ISR rate was verified with an in-circuit emulator. - -Single processor tests: -Multi-processort tests: not applicable -Timing tests: see results in c/src/tests/tmtests/times - -Note: The board has 256 kbyte RAM, so the timing tests would not run -with the standard executive RAM size configuration of 256 K. -Modifying the conftbl.h files to specify 160 kbyte for workspace -seemed to work. - -* Porting - -** Mod c/src/tests/tmtests/*/conftbl.h - -Modified to use 160 kbyte for executive RAM size. - -** Add c/make/custom/gen68302.cfg - -Based on m68k_no_bsp.cfg. Turned off multiprocessor support. Had to -use a BSP-specific compiler configuration file in order to link the -proper startup file. - -** Mod c/make/compilers/gcc-m68000.cfg - -Added "-m68000" to the AS macro so that non-68000 instructions are -neither generated nor allowed (remember that the GNU assembler -supports pseudo-assembler instructions (e.g. jbsr) that will be -"intelligently" assembled.) Added "m68000/" before libgcc.a so that -non-68000 instructions aren't included. - -** Add c/make/compilers/gcc-gen68302.cfg - -Based on modified gcc-m68000.cfg. - -Changed make-exe define to produce IEEE-695 output files for loading -into the emulator. - -The board has no debug monitor, so I had to create a 68302-specific -startup file (c/src/lib/libbsp/m68k/gen68302/start302/start302.s) to -override the c/src/lib/start/m68k/start.s. START_FILE entry was -modified to causes start302.s to be linked first (in lieu of start.s). - -** Mod c/src/exec/cpu/m68k/cpu.h - -Turned off software and hardware interrupt stack support. Added -support in _CPU_Bitfield_Find_first_bit() and -_CPU_Priority_Bits_index() to replace the bfffo instruction. - -TODO: add software-maintained interrupt stack. - -TODO: optimize things so that subtracting _priority from 15 isn't -required in _CPU_Priority_Bits_index(). - -** Mod c/src/exec/cpu/m68k/cpu.c - -Added the log base 2 table (__log2table) that's required by the BFFFO -replacement in cpu.h. - -** Mod c/src/exec/cpu/m68k/cpu_asm.s - -Added _ISR_Exit that's currently used in TBD.... Added ifdef wrapper -around ISR exit code that accessed the format nibble. Added some code -to restore the status register and call _Thread_Dispatch. - -TODO: add software-maintained interrupt stack. - -** Mod c/src/exec/cpu/m68k/m68k.h - -Changed "typedef char signed8" to "typedef signed char signed8". - -** Add c/src/lib/libbsp/m68k/gen68302/... -*** clock/ - -TODO: Add set_vector support. Figure out what to do with Clock_exit(). -TODO: Pre-compute (rtems_configuration_get_microseconds_per_tick()/1000) so that -it doesn't have to be re-computed on each Clock_isr(). - -*** console/ - -These files assume SCC2, but it shouldn't be too difficult to re-write -these to use any of the other SCCs. - -*** include/ -*** start302/ - -This contains the start302.s file that does some fairly tricky memory -re-mapping so that RAM ends up at 0 and ROM ends up at 0xc00000. - -*** startup/ -*** timer/ -*** wrapup/ -- cgit v1.2.3