diff --git a/second/Makefile b/second/Makefile deleted file mode 100644 index 3af6052..0000000 --- a/second/Makefile +++ /dev/null @@ -1,48 +0,0 @@ - -# Configuration for the Cisco 3620 Router -TARGET=c3620 -MACHCODE=0x1e -TEXTADDR=0x80008000 - -# additional CFLAGS -CFLAGS= - -# don't modify anything below here -# =================================================================== - -PROG = ciscoload - -# check if the CROSS_COMPILE export has been set -ifndef CROSS_COMPILE -CROSS_COMPILE = mips-elf- -endif - -CC=$(CROSS_COMPILE)gcc -AR=$(CROSS_COMPILE)ar -LD=$(CROSS_COMPILE)ld -OBJCOPY=$(CROSS_COMPILE)objcopy - -INCLUDE=-I../include - -CFLAGS=$(INCLUDE) -fno-builtin -fomit-frame-pointer -fno-pic -mno-abicalls -Wall - -ASFLAGS=-D__ASSEMBLY__ -xassembler-with-cpp -traditional-cpp - -LDFLAGS= -nostartfiles -nostdlib --discard-all --strip-all --omagic \ - -Ttext ${TEXTADDR} --entry _start - -OBJECTS = kcopy.o - -all: ${OBJECTS} ${PROG} - -${PROG}: ${OBJECTS} - ${CC} ${LDFLAGS} ${OBJECTS} -o ${PROG}.elf - ${OBJCOPY} -O binary ${PROG}.elf ${PROG}.two - -.S.o: - ${CC} ${CFLAGS} ${ASFLAGS} -c $< - -clean: - rm *.o - rm ${PROG}.elf - rm ${PROG}.two diff --git a/second/kcopy.S b/second/kcopy.S deleted file mode 100644 index 0194ae9..0000000 --- a/second/kcopy.S +++ /dev/null @@ -1,77 +0,0 @@ -/* Re-copy kernel image from given offset in a0 (length a1), and then - * jump to entry point contained in a2. Copies data to location pointed - * to in a3 - * void kload(memory_start, memory_length, entry_point, copy_start) - * Very naive. - * ------------------------------------------------------------------ - * (c) 2008 Philippe Vachon - * Licensed under the GNU General Public License v3. See COPYING in the - * source distribution for more details. - */ - -#include -#include -#include - -#define KSEG0 0x80000000 -#define CACHE_SIZE 0x4000 - -#define ICACHE_INVALIDATE 0x00 -#define DCACHE_WRITEBACK_INVALIDATE 0x01 - -#define CACHE_LINE_LEN 0x4 - -EXPORT(_start) - -LEAF(_start) - .set noreorder - .set mips3 - - /* invalidate the caches */ - li k0, KSEG0 - addi k1, k0, CACHE_SIZE - -2: cache ICACHE_INVALIDATE, 0(k0) - cache DCACHE_WRITEBACK_INVALIDATE, 0(k0) - - ble k0, k1, 2b - addi k0, CACHE_LINE_LEN - - -1: lw s0, 0(a0) # load byte from address pointed to in a0 - sw s0, 0(a3) # copy byte to address pointed to in a3 - - addiu a0, 4 # next location to read from - addiu a3, 4 # next location to write to - - bnez a1, 1b # continue copying - addi a1, -4 # subtract from remaining bytes to copy - - nop - - /* put the stack pointer up at top of memory */ - li a0, 4 - syscall - nop - - li sp, KSEG0 - add sp, sp, v0 - - /* set SR(BEV) = 0 */ - mfc0 k0, CP0_STATUS - nop - /* fix... me... please */ - li k1, 0xFFBFFFFF - and k0, k1 - mtc0 k0, CP0_STATUS - - /* jump to the kernel, setting up the firmware args appropriately */ - move a0, v0 - li a1, KSEG0 - li a3, 0 - li v0, 0 - - jr a2 # jump to kernel entry point - nop - - END(_start)