| 1 |
/* |
| 2 |
* Copyright (C) 2005-2006 Anders Gavare. All rights reserved. |
| 3 |
* |
| 4 |
* Redistribution and use in source and binary forms, with or without |
| 5 |
* modification, are permitted provided that the following conditions are met: |
| 6 |
* |
| 7 |
* 1. Redistributions of source code must retain the above copyright |
| 8 |
* notice, this list of conditions and the following disclaimer. |
| 9 |
* 2. Redistributions in binary form must reproduce the above copyright |
| 10 |
* notice, this list of conditions and the following disclaimer in the |
| 11 |
* documentation and/or other materials provided with the distribution. |
| 12 |
* 3. The name of the author may not be used to endorse or promote products |
| 13 |
* derived from this software without specific prior written permission. |
| 14 |
* |
| 15 |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 16 |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 17 |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 18 |
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 19 |
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 20 |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 21 |
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 22 |
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 23 |
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 24 |
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 25 |
* SUCH DAMAGE. |
| 26 |
* |
| 27 |
* |
| 28 |
* $Id: yamon.c,v 1.8 2006/08/22 16:07:34 debug Exp $ |
| 29 |
* |
| 30 |
* YAMON emulation. (Very basic, only what is needed to get NetBSD booting.) |
| 31 |
*/ |
| 32 |
|
| 33 |
#include <stdio.h> |
| 34 |
#include <stdlib.h> |
| 35 |
#include <string.h> |
| 36 |
#include <sys/types.h> |
| 37 |
|
| 38 |
#include "console.h" |
| 39 |
#include "cpu.h" |
| 40 |
#include "cpu_mips.h" |
| 41 |
#include "machine.h" |
| 42 |
#include "memory.h" |
| 43 |
#include "misc.h" |
| 44 |
#include "net.h" |
| 45 |
|
| 46 |
#ifdef ENABLE_MIPS |
| 47 |
|
| 48 |
#include "yamon.h" |
| 49 |
|
| 50 |
|
| 51 |
/* |
| 52 |
* yamon_machine_setup(): |
| 53 |
*/ |
| 54 |
void yamon_machine_setup(struct machine *machine, uint64_t env) |
| 55 |
{ |
| 56 |
char tmps[200]; |
| 57 |
char macaddr[6]; |
| 58 |
uint64_t tmpptr = env + 0x400; |
| 59 |
struct cpu *cpu = machine->cpus[0]; |
| 60 |
|
| 61 |
/* |
| 62 |
* Standard YAMON environment variables: |
| 63 |
* |
| 64 |
* baseboardserial |
| 65 |
* bootfile TODO |
| 66 |
* bootprot TODO: Non-tftp boot |
| 67 |
* bootserport |
| 68 |
* bootserver |
| 69 |
* cpuconfig TODO |
| 70 |
* ethaddr |
| 71 |
* fpu TODO |
| 72 |
* gateway |
| 73 |
* ipaddr TODO: Don't hardcode! |
| 74 |
* memsize |
| 75 |
* modetty0 |
| 76 |
* modetty1 |
| 77 |
* prompt |
| 78 |
* start TODO |
| 79 |
* startdelay TODO |
| 80 |
* subnetmask TODO: Real subnet mask |
| 81 |
* yamonrev |
| 82 |
*/ |
| 83 |
|
| 84 |
add_environment_string_dual(cpu, &env, &tmpptr, |
| 85 |
"baseboardserial", "0000000000"); |
| 86 |
|
| 87 |
/* TODO: Disk boot! */ |
| 88 |
add_environment_string_dual(cpu, &env, &tmpptr, "bootprot", "tftp"); |
| 89 |
|
| 90 |
add_environment_string_dual(cpu, &env, &tmpptr, "bootserport", "tty0"); |
| 91 |
|
| 92 |
add_environment_string_dual(cpu, &env, &tmpptr, |
| 93 |
"bootserver", "10.0.0.254"); |
| 94 |
|
| 95 |
net_generate_unique_mac(machine, (unsigned char *) macaddr); |
| 96 |
snprintf(tmps, sizeof(tmps), "%02x.%02x.%02x.%02x.%02x.%02x", |
| 97 |
macaddr[0], macaddr[1], macaddr[2], |
| 98 |
macaddr[3], macaddr[4], macaddr[5]); |
| 99 |
add_environment_string_dual(cpu, &env, &tmpptr, "ethaddr", tmps); |
| 100 |
|
| 101 |
add_environment_string_dual(cpu, &env, &tmpptr, |
| 102 |
"gateway", "10.0.0.254"); |
| 103 |
|
| 104 |
/* TODO: Don't hardcode! */ |
| 105 |
add_environment_string_dual(cpu, &env, &tmpptr, |
| 106 |
"ipaddr", "10.0.0.1"); |
| 107 |
|
| 108 |
snprintf(tmps, sizeof(tmps), "0x%08x", machine->physical_ram_in_mb<<20); |
| 109 |
add_environment_string_dual(cpu, &env, &tmpptr, "memsize", tmps); |
| 110 |
|
| 111 |
add_environment_string_dual(cpu, &env, &tmpptr, |
| 112 |
"modetty0", "38400,n,8,1,none"); |
| 113 |
|
| 114 |
add_environment_string_dual(cpu, &env, &tmpptr, |
| 115 |
"modetty1", "38400,n,8,1,none"); |
| 116 |
|
| 117 |
add_environment_string_dual(cpu, &env, &tmpptr, "prompt", "YAMON"); |
| 118 |
|
| 119 |
add_environment_string_dual(cpu, &env, &tmpptr, "yamonrev", "02.06"); |
| 120 |
|
| 121 |
/* TODO: Real subnet mask: */ |
| 122 |
add_environment_string_dual(cpu, &env, &tmpptr, |
| 123 |
"subnetmask", "255.0.0.0"); |
| 124 |
|
| 125 |
|
| 126 |
/* FreeBSD development specific: */ |
| 127 |
snprintf(tmps, sizeof(tmps), "%i", machine->emulated_hz / 1000); |
| 128 |
add_environment_string_dual(cpu, &env, &tmpptr, "khz", tmps); |
| 129 |
|
| 130 |
/* NULL terminate: */ |
| 131 |
tmpptr = 0; |
| 132 |
add_environment_string_dual(cpu, &env, &tmpptr, NULL, NULL); |
| 133 |
} |
| 134 |
|
| 135 |
|
| 136 |
/* |
| 137 |
* yamon_emul(): |
| 138 |
* |
| 139 |
* YAMON emulation (for evbmips). |
| 140 |
*/ |
| 141 |
int yamon_emul(struct cpu *cpu) |
| 142 |
{ |
| 143 |
uint32_t ofs = (cpu->pc & 0xff) + YAMON_FUNCTION_BASE; |
| 144 |
uint8_t ch; |
| 145 |
int n; |
| 146 |
|
| 147 |
switch (ofs) { |
| 148 |
|
| 149 |
case YAMON_PRINT_COUNT_OFS: |
| 150 |
/* |
| 151 |
* print count: |
| 152 |
* a1 = string |
| 153 |
* a2 = count |
| 154 |
*/ |
| 155 |
n = 0; |
| 156 |
while (n < (int32_t)cpu->cd.mips.gpr[MIPS_GPR_A2]) { |
| 157 |
cpu->memory_rw(cpu, cpu->mem, (int32_t)cpu->cd.mips.gpr |
| 158 |
[MIPS_GPR_A1] + n, &ch, sizeof(ch), MEM_READ, |
| 159 |
CACHE_DATA | NO_EXCEPTIONS); |
| 160 |
console_putchar(cpu->machine->main_console_handle, ch); |
| 161 |
n++; |
| 162 |
} |
| 163 |
break; |
| 164 |
|
| 165 |
case YAMON_EXIT_OFS: |
| 166 |
/* |
| 167 |
* exit |
| 168 |
*/ |
| 169 |
debug("[ yamon_emul(): exit ]\n"); |
| 170 |
cpu->running = 0; |
| 171 |
break; |
| 172 |
|
| 173 |
/* YAMON_FLUSH_CACHE_OFS: TODO */ |
| 174 |
/* YAMON_PRINT_OFS: TODO */ |
| 175 |
/* YAMON_REG_CPU_ISR_OFS: TODO */ |
| 176 |
/* YAMON_DEREG_CPU_ISR_OFS: TODO */ |
| 177 |
/* YAMON_REG_IC_ISR_OFS: TODO */ |
| 178 |
/* YAMON_DEREG_IC_ISR_OFS: TODO */ |
| 179 |
/* YAMON_REG_ESR_OFS: TODO */ |
| 180 |
/* YAMON_DEREG_ESR_OFS: TODO */ |
| 181 |
|
| 182 |
case YAMON_GETCHAR_OFS: |
| 183 |
n = console_readchar(cpu->machine->main_console_handle); |
| 184 |
/* Note: -1 (if no char was available) becomes 0xff: */ |
| 185 |
ch = n; |
| 186 |
cpu->memory_rw(cpu, cpu->mem, (int32_t)cpu->cd.mips.gpr[ |
| 187 |
MIPS_GPR_A1], &ch, sizeof(ch), MEM_WRITE, |
| 188 |
CACHE_DATA | NO_EXCEPTIONS); |
| 189 |
break; |
| 190 |
|
| 191 |
case YAMON_SYSCON_READ_OFS: |
| 192 |
/* |
| 193 |
* syscon |
| 194 |
*/ |
| 195 |
fatal("[ yamon_emul(): syscon: TODO ]\n"); |
| 196 |
|
| 197 |
/* TODO. For now, return some kind of "failure": */ |
| 198 |
cpu->cd.mips.gpr[MIPS_GPR_V0] = 1; |
| 199 |
break; |
| 200 |
|
| 201 |
default:cpu_register_dump(cpu->machine, cpu, 1, 0); |
| 202 |
printf("\n"); |
| 203 |
fatal("[ yamon_emul(): unimplemented yamon function 0x%" |
| 204 |
PRIx32" ]\n", ofs); |
| 205 |
cpu->running = 0; |
| 206 |
} |
| 207 |
|
| 208 |
return 1; |
| 209 |
} |
| 210 |
|
| 211 |
#endif /* ENABLE_MIPS */ |
Parent Directory
| 
Revision Log