| /SPARTAN/trunk/arch/mips/src/exception.c |
|---|
| 0,0 → 1,65 |
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #include <arch/exception.h> |
| #include <panic.h> |
| #include <arch/cp0.h> |
| #include <arch/types.h> |
| #include <arch.h> |
| void exception(void) |
| { |
| int excno; |
| __u32 epc; |
| pri_t pri; |
| pri = cpu_priority_high(); |
| epc = cp0_epc_read(); |
| cp0_status_write(cp0_status_read() & ~ cp0_status_exl_exception_bit); |
| if (the->thread) { |
| the->thread->saved_pri = pri; |
| the->thread->saved_epc = epc; |
| } |
| /* decode exception number and process the exception */ |
| switch(excno = (cp0_cause_read()>>2)&0x1f) { |
| case EXC_Int: interrupt(); break; |
| case EXC_TLBL: |
| case EXC_TLBS: tlb_invalid(); break; |
| default: panic(PANIC "unhandled exception %d\n", excno); break; |
| } |
| if (the->thread) { |
| pri = the->thread->saved_pri; |
| epc = the->thread->saved_epc; |
| } |
| cp0_epc_write(epc); |
| cp0_status_write(cp0_status_read() | cp0_status_exl_exception_bit); |
| cpu_priority_restore(pri); |
| } |
| /SPARTAN/trunk/arch/mips/src/asm.s |
|---|
| 0,0 → 1,157 |
| # |
| # Copyright (C) 2001-2004 Jakub Jermar |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions |
| # are met: |
| # |
| # - Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # - Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # - The name of the author may not be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| # |
| .text |
| .macro cp0_read reg |
| mfc0 $2,\reg |
| j $31 |
| nop |
| .endm |
| .macro cp0_write reg |
| mtc0 $4,\reg |
| j $31 |
| nop |
| .endm |
| .set noat |
| .set noreorder |
| .set nomacro |
| .global cp0_index_read |
| .global cp0_index_write |
| .global cp0_random_read |
| .global cp0_entry_lo0_read |
| .global cp0_entry_lo0_write |
| .global cp0_entry_lo1_read |
| .global cp0_entry_lo1_write |
| .global cp0_context_read |
| .global cp0_context_write |
| .global cp0_pagemask_read |
| .global cp0_pagemask_write |
| .global cp0_wired_read |
| .global cp0_wired_write |
| .global cp0_badvaddr_read |
| .global cp0_count_read |
| .global cp0_count_write |
| .global cp0_hi_read |
| .global cp0_hi_write |
| .global cp0_compare_read |
| .global cp0_compare_write |
| .global cp0_status_read |
| .global cp0_status_write |
| .global cp0_cause_read |
| .global cp0_epc_read |
| .global cp0_epc_write |
| .global cp0_prid_read |
| cp0_index_read: cp0_read $0 |
| cp0_index_write: cp0_write $0 |
| cp0_random_read: cp0_read $1 |
| cp0_entry_lo0_read: cp0_read $2 |
| cp0_entry_lo0_write: cp0_write $2 |
| cp0_entry_lo1_read: cp0_read $3 |
| cp0_entry_lo1_write: cp0_write $3 |
| cp0_context_read: cp0_read $4 |
| cp0_context_write: cp0_write $4 |
| cp0_pagemask_read: cp0_read $5 |
| cp0_pagemask_write: cp0_write $5 |
| cp0_wired_read: cp0_read $6 |
| cp0_wired_write: cp0_write $6 |
| cp0_badvaddr_read: cp0_read $8 |
| cp0_count_read: cp0_read $9 |
| cp0_count_write: cp0_write $9 |
| cp0_entry_hi_read: cp0_read $10 |
| cp0_entry_hi_write: cp0_write $10 |
| cp0_compare_read: cp0_read $11 |
| cp0_compare_write: cp0_write $11 |
| cp0_status_read: cp0_read $12 |
| cp0_status_write: cp0_write $12 |
| cp0_cause_read: cp0_read $13 |
| cp0_epc_read: cp0_read $14 |
| cp0_epc_write: cp0_write $14 |
| cp0_prid_read: cp0_read $15 |
| .global tlbp |
| tlbp: |
| tlbp |
| j $31 |
| nop |
| .global tlbr |
| tlbr: |
| tlbr |
| j $31 |
| nop |
| .global tlbwi |
| tlbwi: |
| tlbwi |
| j $31 |
| nop |
| .global tlbwr |
| tlbwr: |
| tlbwr |
| j $31 |
| nop |
| .global cpu_halt |
| cpu_halt: |
| j cpu_halt |
| nop |
| # THIS IS USERSPACE CODE |
| .global utext |
| utext: |
| j $31 |
| nop |
| utext_end: |
| .data |
| .global utext_size |
| utext_size: |
| .long utext_end-utext |
| /SPARTAN/trunk/arch/mips/src/cache.c |
|---|
| 0,0 → 1,35 |
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #include <arch/cache.h> |
| #include <panic.h> |
| void cache_error(void) |
| { |
| panic(PANIC "cache_error exception\n"); |
| } |
| /SPARTAN/trunk/arch/mips/src/context.S |
|---|
| 0,0 → 1,52 |
| # |
| # Copyright (C) 2001-2004 Jakub Jermar |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions |
| # are met: |
| # |
| # - Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # - Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # - The name of the author may not be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| # |
| #include <arch/asm/macro.h> |
| .text |
| .set noat |
| .set noreorder |
| .set nomacro |
| .global context_save |
| .global context_restore |
| context_save: |
| REGISTERS_STORE $4 |
| # context_save returns 1 |
| j $31 |
| li $2, 1 |
| context_restore: |
| REGISTERS_LOAD $4 |
| # context_restore returns 0 |
| j $31 |
| xor $2, $2 |
| /SPARTAN/trunk/arch/mips/src/lib/memstr.c |
|---|
| 0,0 → 1,47 |
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #include <memstr.h> |
| #include <arch/types.h> |
| void memcopy(__address src, __address dst, int cnt) |
| { |
| int i; |
| for (i=0; i<cnt; i++) |
| *((__u8 *) (dst + i)) = *((__u8 *) (src + i)); |
| } |
| void memsetb(__address dst, int cnt, __u8 x) |
| { |
| int i; |
| __u8 *p = (__u8 *) dst; |
| for(i=0; i<cnt; i++) |
| p[i] = x; |
| } |
| /SPARTAN/trunk/arch/mips/src/cpu/cpu.c |
|---|
| 0,0 → 1,94 |
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #include <arch/cpu.h> |
| #include <cpu.h> |
| #include <arch.h> |
| #include <arch/cp0.h> |
| #include <typedefs.h> |
| struct { |
| char *vendor; |
| char *model; |
| } imp_data[] = { |
| { "Invalid", "Invalid" }, /* 0x00 */ |
| { "MIPS", "R2000" }, /* 0x01 */ |
| { "MIPS", "R3000" }, /* 0x02 */ |
| { "MIPS", "R6000" }, /* 0x03 */ |
| { "MIPS", " R4000/R4400" }, /* 0x04 */ |
| { "LSI Logic", "R3000" }, /* 0x05 */ |
| { "MIPS", "R6000A" }, /* 0x06 */ |
| { "IDT", "3051/3052" }, /* 0x07 */ |
| { "Invalid", "Invalid" }, /* 0x08 */ |
| { "MIPS", "R10000/T5" }, /* 0x09 */ |
| { "MIPS", "R4200" }, /* 0x0a */ |
| { "Unknown", "Unknown" }, /* 0x0b */ |
| { "Unknown", "Unknown" }, /* 0x0c */ |
| { "Invalid", "Invalid" }, /* 0x0d */ |
| { "Invalid", "Invalid" }, /* 0x0e */ |
| { "Invalid", "Invalid" }, /* 0x0f */ |
| { "MIPS", "R8000" }, /* 0x10 */ |
| { "Invalid", "Invalid" }, /* 0x11 */ |
| { "Invalid", "Invalid" }, /* 0x12 */ |
| { "Invalid", "Invalid" }, /* 0x13 */ |
| { "Invalid", "Invalid" }, /* 0x14 */ |
| { "Invalid", "Invalid" }, /* 0x15 */ |
| { "Invalid", "Invalid" }, /* 0x16 */ |
| { "Invalid", "Invalid" }, /* 0x17 */ |
| { "Invalid", "Invalid" }, /* 0x18 */ |
| { "Invalid", "Invalid" }, /* 0x19 */ |
| { "Invalid", "Invalid" }, /* 0x1a */ |
| { "Invalid", "Invalid" }, /* 0x1b */ |
| { "Invalid", "Invalid" }, /* 0x1c */ |
| { "Invalid", "Invalid" }, /* 0x1d */ |
| { "Invalid", "Invalid" }, /* 0x1e */ |
| { "Invalid", "Invalid" }, /* 0x1f */ |
| { "QED", "R4600" }, /* 0x20 */ |
| { "Sony", "R3000" }, /* 0x21 */ |
| { "Toshiba", "R3000" }, /* 0x22 */ |
| { "NKK", "R3000" } /* 0x23 */ |
| }; |
| void cpu_arch_init(void) |
| { |
| } |
| void cpu_identify(void) |
| { |
| the->cpu->arch.rev_num = cp0_prid_read() & 0xff; |
| the->cpu->arch.imp_num = (cp0_prid_read() >> 8) & 0xff; |
| } |
| void cpu_print_report(cpu_t *m) |
| { |
| printf("cpu%d: %s %s (rev=%d.%d, imp=%d)\n", |
| m->id, imp_data[m->arch.imp_num].vendor, imp_data[m->arch.imp_num].model, m->arch.rev_num >> 4, m->arch.rev_num & 0xf, m->arch.imp_num); |
| } |
| /SPARTAN/trunk/arch/mips/src/fake.s |
|---|
| 0,0 → 1,40 |
| # |
| # Copyright (C) 2001-2004 Jakub Jermar |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions |
| # are met: |
| # |
| # - Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # - Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # - The name of the author may not be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| # |
| .text |
| .set noat |
| .global calibrate_delay_loop |
| .global asm_delay_loop |
| .global userspace |
| userspace: |
| calibrate_delay_loop: |
| asm_delay_loop: |
| j $31 |
| nop |
| /SPARTAN/trunk/arch/mips/src/putchar.c |
|---|
| 0,0 → 1,42 |
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #include <putchar.h> |
| #include <arch/types.h> |
| #include <arch/cp0.h> |
| #define VIDEORAM 0xA000000 |
| void putchar(char ch) |
| { |
| __u32 status = cp0_status_read(); |
| cp0_status_write(cp0_status_read() | cp0_status_erl_error_bit); |
| *((char *) VIDEORAM) = ch; |
| cp0_status_write(status); |
| } |
| /SPARTAN/trunk/arch/mips/src/mips.c |
|---|
| 0,0 → 1,51 |
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #include <arch.h> |
| #include <arch/cp0.h> |
| #include <arch/exception.h> |
| void arch_init(void) |
| { |
| /* |
| * Switch to BEV normal level so that exception vectors point to the kernel. |
| * Clear the error level. |
| */ |
| cp0_status_write(cp0_status_read() & ~(cp0_status_bev_bootstrap_bit|cp0_status_erl_error_bit)); |
| /* |
| * Unmask hardware clock interrupt. |
| */ |
| cp0_status_write(cp0_status_read() | (1<<cp0_status_im7_shift)); |
| /* |
| * Start hardware clock. |
| */ |
| cp0_compare_write(cp0_compare_value); |
| cp0_count_write(0); |
| } |
| /SPARTAN/trunk/arch/mips/src/mm/tlb.c |
|---|
| 0,0 → 1,54 |
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #include <arch/mm/tlb.h> |
| #include <mm/tlb.h> |
| #include <arch/cp0.h> |
| #include <panic.h> |
| #include <arch.h> |
| int bootstrap = 1; |
| void tlb_refill(void) |
| { |
| if (bootstrap) { |
| bootstrap = 0; |
| main_bsp(); |
| } |
| panic(PANIC "tlb_refill exception\n"); |
| } |
| void tlb_invalid(void) |
| { |
| panic(PANIC "%X: TLB exception at %X", cp0_badvaddr_read(), the->thread ? the->thread->saved_epc : 0); |
| } |
| void tlb_invalidate(int asid) |
| { |
| } |
| /SPARTAN/trunk/arch/mips/src/mm/frame.c |
|---|
| 0,0 → 1,37 |
| /* |
| * Copyright (C) 2005 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #include <arch/mm/frame.h> |
| #include <mm/frame.h> |
| void frame_arch_init(void) |
| { |
| kernel_frames = frames; |
| kernel_frames_free = frames_free; |
| frame_kernel_bitmap = frame_bitmap; |
| } |
| /SPARTAN/trunk/arch/mips/src/mm/page.c |
|---|
| 0,0 → 1,35 |
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #include <arch/types.h> |
| #include <mm/page.h> |
| void map_page_to_frame(__address page, __address frame, int flags, int copy) |
| { |
| /* TODO !!! */ |
| } |
| /SPARTAN/trunk/arch/mips/src/panic.s |
|---|
| 0,0 → 1,42 |
| # |
| # Copyright (C) 2001-2004 Jakub Jermar |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions |
| # are met: |
| # |
| # - Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # - Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # - The name of the author may not be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| # |
| .text |
| .set noat |
| .set noreorder |
| .set nomacro |
| .global panic |
| panic: |
| jal printf |
| nop |
| j cpu_halt |
| nop |
| /SPARTAN/trunk/arch/mips/src/interrupt.c |
|---|
| 0,0 → 1,90 |
| /* |
| * Copyright (C) 2001-2004 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| #include <arch/interrupt.h> |
| #include <arch/types.h> |
| #include <arch.h> |
| #include <arch/cp0.h> |
| #include <time/clock.h> |
| #include <panic.h> |
| pri_t cpu_priority_high(void) |
| { |
| pri_t pri = (pri_t) cp0_status_read(); |
| cp0_status_write(pri & ~cp0_status_ie_enabled_bit); |
| return pri; |
| } |
| pri_t cpu_priority_low(void) |
| { |
| pri_t pri = (pri_t) cp0_status_read(); |
| cp0_status_write(pri | cp0_status_ie_enabled_bit); |
| return pri; |
| } |
| void cpu_priority_restore(pri_t pri) |
| { |
| cp0_status_write(cp0_status_read() | (pri & cp0_status_ie_enabled_bit)); |
| } |
| pri_t cpu_priority_read(void) |
| { |
| return cp0_status_read(); |
| } |
| void interrupt(void) |
| { |
| __u32 cause; |
| int i; |
| /* decode interrupt number and process the interrupt */ |
| cause = (cp0_cause_read()>>8)&0xff; |
| for (i=0; i<8; i++) { |
| if (cause & (1<<i)) { |
| switch (i) { |
| case 0x0: |
| case 0x1: |
| case 0x2: |
| case 0x3: |
| case 0x4: |
| case 0x5: |
| case 0x6: panic(PANIC "unhandled interrupt %d\n", i); break; |
| case 0x7: |
| /* clear timer interrupt */ |
| cp0_compare_write(cp0_compare_value); |
| /* start counting over again */ |
| cp0_count_write(0); |
| clock(); |
| break; |
| } |
| } |
| } |
| } |
| /SPARTAN/trunk/arch/mips/src/start.S |
|---|
| 0,0 → 1,91 |
| # |
| # Copyright (C) 2001-2004 Jakub Jermar |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions |
| # are met: |
| # |
| # - Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # - Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # - The name of the author may not be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| # |
| #include <arch/asm/macro.h> |
| #define STACK_SPACE 128 |
| .text |
| .set noat |
| .set noreorder |
| .set nomacro |
| .global kernel_image_start |
| .global tlb_refill_entry |
| .global cache_error_entry |
| .global exception_entry |
| .org 0x0 |
| kernel_image_start: |
| tlb_refill_entry: |
| j tlb_refill_handler |
| nop |
| .org 0x100 |
| cache_error_entry: |
| j cache_error_handler |
| nop |
| .org 0x180 |
| exception_entry: |
| exception_handler: |
| sub $29, STACK_SPACE |
| REGISTERS_STORE $29 |
| jal exception |
| nop |
| REGISTERS_LOAD $29 |
| add $29, STACK_SPACE |
| eret |
| tlb_refill_handler: |
| sub $29, STACK_SPACE |
| REGISTERS_STORE $29 |
| jal tlb_refill |
| nop |
| REGISTERS_LOAD $29 |
| add $29, STACK_SPACE |
| eret |
| cache_error_handler: |
| sub $29, STACK_SPACE |
| REGISTERS_STORE $29 |
| jal cache_error |
| nop |
| REGISTERS_LOAD $29 |
| add $29, STACK_SPACE |
| eret |