25 |
* SUCH DAMAGE. |
* SUCH DAMAGE. |
26 |
* |
* |
27 |
* |
* |
28 |
* $Id: cpu_alpha_palcode.c,v 1.8 2006/06/02 18:11:38 debug Exp $ |
* $Id: cpu_alpha_palcode.c,v 1.15 2006/10/08 02:28:58 debug Exp $ |
29 |
* |
* |
30 |
* Alpha PALcode-related functionality. |
* Alpha PALcode-related functionality. |
31 |
|
* |
32 |
|
* (See http://www.alphalinux.org/docs/alphaahb.html for good descriptions |
33 |
|
* of many PALcode functions.) |
34 |
*/ |
*/ |
35 |
|
|
36 |
|
|
56 |
#else /* ENABLE_ALPHA */ |
#else /* ENABLE_ALPHA */ |
57 |
|
|
58 |
|
|
59 |
|
#include "alpha_prom.h" |
60 |
#include "console.h" |
#include "console.h" |
61 |
#include "cpu.h" |
#include "cpu.h" |
62 |
#include "machine.h" |
#include "machine.h" |
95 |
case 0x86: snprintf(buf, buflen, "PAL_OSF1_imb"); break; |
case 0x86: snprintf(buf, buflen, "PAL_OSF1_imb"); break; |
96 |
case 0x92: snprintf(buf, buflen, "PAL_OSF1_urti"); break; |
case 0x92: snprintf(buf, buflen, "PAL_OSF1_urti"); break; |
97 |
case 0x3fffffe: snprintf(buf, buflen, "GXemul_PROM"); break; |
case 0x3fffffe: snprintf(buf, buflen, "GXemul_PROM"); break; |
98 |
default:snprintf(buf, buflen, "UNKNOWN 0x%x", palcode); |
default:snprintf(buf, buflen, "UNKNOWN 0x%"PRIx32, palcode); |
99 |
} |
} |
100 |
} |
} |
101 |
|
|
105 |
*/ |
*/ |
106 |
void alpha_prom_call(struct cpu *cpu) |
void alpha_prom_call(struct cpu *cpu) |
107 |
{ |
{ |
108 |
uint64_t addr; |
uint64_t addr, a1 = cpu->cd.alpha.r[ALPHA_A1]; |
109 |
|
uint64_t a2 = cpu->cd.alpha.r[ALPHA_A2], a3 = cpu->cd.alpha.r[ALPHA_A3]; |
110 |
|
uint64_t len; |
111 |
|
char *s = ""; |
112 |
|
|
113 |
switch (cpu->cd.alpha.r[ALPHA_A0]) { |
switch (cpu->cd.alpha.r[ALPHA_A0]) { |
114 |
case 0x02: |
|
115 |
/* puts: a1 = channel, a2 = ptr to buf, a3 = len */ |
case PROM_R_PUTS: |
116 |
for (addr = cpu->cd.alpha.r[ALPHA_A2]; |
/* a1 = channel, a2 = ptr to buf, a3 = len */ |
117 |
addr < cpu->cd.alpha.r[ALPHA_A2] + |
for (addr = a2; addr < a2 + a3; addr ++) { |
|
cpu->cd.alpha.r[ALPHA_A3]; addr ++) { |
|
118 |
unsigned char ch; |
unsigned char ch; |
119 |
cpu->memory_rw(cpu, cpu->mem, addr, &ch, sizeof(ch), |
cpu->memory_rw(cpu, cpu->mem, addr, &ch, sizeof(ch), |
120 |
MEM_READ, CACHE_DATA | NO_EXCEPTIONS); |
MEM_READ, CACHE_DATA | NO_EXCEPTIONS); |
121 |
console_putchar(cpu->machine->main_console_handle, ch); |
console_putchar(cpu->machine->main_console_handle, ch); |
122 |
} |
} |
123 |
cpu->cd.alpha.r[ALPHA_V0] = cpu->cd.alpha.r[ALPHA_A3]; |
cpu->cd.alpha.r[ALPHA_V0] = a3; |
124 |
break; |
break; |
125 |
case 0x22: |
|
126 |
/* getenv */ |
case PROM_R_GETENV: |
127 |
fatal("[ Alpha PALcode: GXemul PROM call 0x22: TODO ]\n"); |
/* a1 = variable id, a2 = char *buf, a3 = bufsize */ |
128 |
|
switch (a1) { |
129 |
|
case PROM_E_BOOTED_DEV: |
130 |
|
s = ""; /* TODO */ |
131 |
|
break; |
132 |
|
case PROM_E_BOOTED_FILE: |
133 |
|
s = cpu->machine->boot_kernel_filename; |
134 |
|
break; |
135 |
|
case PROM_E_BOOTED_OSFLAGS: |
136 |
|
s = cpu->machine->boot_string_argument; |
137 |
|
break; |
138 |
|
case PROM_E_TTY_DEV: |
139 |
|
s = ""; /* TODO */ |
140 |
|
break; |
141 |
|
default:fatal("[ Alpha PALcode: GXemul PROM getenv %i: TODO " |
142 |
|
"]\n", cpu->cd.alpha.r[ALPHA_A1]); |
143 |
|
cpu->running = 0; |
144 |
|
} |
145 |
|
/* Copy at most a3 bytes. */ |
146 |
|
len = a3; |
147 |
|
if (strlen(s) < len) |
148 |
|
len = strlen(s) + 1; |
149 |
|
store_buf(cpu, a2, s, len); |
150 |
break; |
break; |
151 |
|
|
152 |
default:fatal("[ Alpha PALcode: GXemul PROM call, a0=0x%"PRIx64" ]\n", |
default:fatal("[ Alpha PALcode: GXemul PROM call, a0=0x%"PRIx64" ]\n", |
153 |
(uint64_t) cpu->cd.alpha.r[ALPHA_A0]); |
(uint64_t) cpu->cd.alpha.r[ALPHA_A0]); |
154 |
cpu->running = 0; |
cpu->running = 0; |
167 |
*/ |
*/ |
168 |
void alpha_palcode(struct cpu *cpu, uint32_t palcode) |
void alpha_palcode(struct cpu *cpu, uint32_t palcode) |
169 |
{ |
{ |
170 |
|
uint64_t a0 = cpu->cd.alpha.r[ALPHA_A0], a1 = cpu->cd.alpha.r[ALPHA_A1]; |
171 |
|
|
172 |
switch (palcode) { |
switch (palcode) { |
173 |
|
case 0x02: /* PAL_draina */ |
174 |
|
/* TODO? */ |
175 |
|
break; |
176 |
case 0x10: /* PAL_OSF1_rdmces */ |
case 0x10: /* PAL_OSF1_rdmces */ |
177 |
/* TODO? Return something in v0. */ |
/* TODO. Return Machine Check status in v0. */ |
178 |
|
cpu->cd.alpha.r[ALPHA_V0] = 0; |
179 |
break; |
break; |
180 |
case 0x11: /* PAL_OSF1_wrmces */ |
case 0x11: /* PAL_OSF1_wrmces */ |
181 |
/* TODO? Set something to a0. */ |
/* TODO. Clear Machine Check and Error status. */ |
182 |
break; |
break; |
183 |
case 0x2b: /* PAL_OSF1_wrfen */ |
case 0x2b: /* PAL_OSF1_wrfen */ |
184 |
/* Floating point enable: a0 = 1 or 0. */ |
/* Floating point enable: a0 = 1 or 0. */ |
185 |
/* TODO */ |
/* TODO */ |
186 |
break; |
break; |
187 |
case 0x2d: /* PAL_OSF1_wrvptptr */ |
case 0x2d: /* PAL_OSF1_wrvptptr */ |
188 |
/* a0 = value */ |
/* Write Virtual Page Table Pointer. a0 = value */ |
189 |
cpu->cd.alpha.wrvptptr = cpu->cd.alpha.r[ALPHA_A0]; |
cpu->cd.alpha.vptptr = a0; |
190 |
break; |
break; |
191 |
case 0x30: /* PAL_OSF1_swpctx */ |
case 0x30: /* PAL_OSF1_swpctx */ |
192 |
/* TODO */ |
/* Save old context: */ |
193 |
/* Swap context */ |
store_64bit_word(cpu, cpu->cd.alpha.ctx + 0, |
194 |
|
cpu->cd.alpha.pcb.apcb_ksp); |
195 |
|
store_64bit_word(cpu, cpu->cd.alpha.ctx + 8, |
196 |
|
cpu->cd.alpha.pcb.apcb_usp); |
197 |
|
store_64bit_word(cpu, cpu->cd.alpha.ctx + 16, |
198 |
|
cpu->cd.alpha.pcb.apcb_ptbr); |
199 |
|
store_32bit_word(cpu, cpu->cd.alpha.ctx + 24, |
200 |
|
cpu->cd.alpha.pcb.apcb_cpc); |
201 |
|
store_32bit_word(cpu, cpu->cd.alpha.ctx + 28, |
202 |
|
cpu->cd.alpha.pcb.apcb_asn); |
203 |
|
store_64bit_word(cpu, cpu->cd.alpha.ctx + 32, |
204 |
|
cpu->cd.alpha.pcb.apcb_unique); |
205 |
|
store_64bit_word(cpu, cpu->cd.alpha.ctx + 40, |
206 |
|
cpu->cd.alpha.pcb.apcb_flags); |
207 |
|
store_64bit_word(cpu, cpu->cd.alpha.ctx + 48, |
208 |
|
cpu->cd.alpha.pcb.apcb_decrsv0); |
209 |
|
store_64bit_word(cpu, cpu->cd.alpha.ctx + 56, |
210 |
|
cpu->cd.alpha.pcb.apcb_decrsv1); |
211 |
|
/* Load new context: */ |
212 |
|
cpu->cd.alpha.ctx = a0; |
213 |
|
cpu->cd.alpha.pcb.apcb_ksp = |
214 |
|
load_64bit_word(cpu, cpu->cd.alpha.ctx + 0); |
215 |
|
cpu->cd.alpha.pcb.apcb_usp = |
216 |
|
load_64bit_word(cpu, cpu->cd.alpha.ctx + 8); |
217 |
|
cpu->cd.alpha.pcb.apcb_ptbr = |
218 |
|
load_64bit_word(cpu, cpu->cd.alpha.ctx + 16); |
219 |
|
cpu->cd.alpha.pcb.apcb_cpc = |
220 |
|
load_64bit_word(cpu, cpu->cd.alpha.ctx + 24); |
221 |
|
cpu->cd.alpha.pcb.apcb_asn = |
222 |
|
load_64bit_word(cpu, cpu->cd.alpha.ctx + 28); |
223 |
|
cpu->cd.alpha.pcb.apcb_unique = |
224 |
|
load_64bit_word(cpu, cpu->cd.alpha.ctx + 32); |
225 |
|
cpu->cd.alpha.pcb.apcb_flags = |
226 |
|
load_64bit_word(cpu, cpu->cd.alpha.ctx + 40); |
227 |
|
cpu->cd.alpha.pcb.apcb_decrsv0 = |
228 |
|
load_64bit_word(cpu, cpu->cd.alpha.ctx + 48); |
229 |
|
cpu->cd.alpha.pcb.apcb_decrsv1 = |
230 |
|
load_64bit_word(cpu, cpu->cd.alpha.ctx + 56); |
231 |
break; |
break; |
232 |
case 0x31: /* PAL_OSF1_wrval */ |
case 0x31: /* PAL_OSF1_wrval */ |
233 |
/* a0 = value */ |
/* a0 = value */ |
234 |
cpu->cd.alpha.sysvalue = cpu->cd.alpha.r[ALPHA_A0]; |
cpu->cd.alpha.sysvalue = a0; |
235 |
break; |
break; |
236 |
case 0x32: /* PAL_OSF1_rdval */ |
case 0x32: /* PAL_OSF1_rdval */ |
237 |
/* return: v0 = value */ |
/* return: v0 = value */ |
238 |
cpu->cd.alpha.r[ALPHA_V0] = cpu->cd.alpha.sysvalue; |
cpu->cd.alpha.r[ALPHA_V0] = cpu->cd.alpha.sysvalue; |
239 |
break; |
break; |
240 |
case 0x33: /* PAL_OSF1_tbi */ |
case 0x33: /* PAL_OSF1_tbi */ |
241 |
/* a0 = op, a1 = vaddr */ |
/* |
242 |
debug("[ Alpha PALcode: PAL_OSF1_tbi: a0=%"PRIi64" a1=0x%" |
* a0 = op, a1 = vaddr |
243 |
PRIx64" ]\n", (int64_t)cpu->cd.alpha.r[ALPHA_A0], |
*/ |
244 |
(uint64_t)cpu->cd.alpha.r[ALPHA_A1]); |
fatal("[ Alpha PALcode: PAL_OSF1_tbi: a0=%"PRIi64" a1=0x%" |
245 |
/* TODO */ |
PRIx64" ]\n", (int64_t)a0, (uint64_t)a1); |
246 |
|
cpu->invalidate_translation_caches(cpu, a1, INVALIDATE_VADDR); |
247 |
break; |
break; |
248 |
case 0x34: /* PAL_OSF1_wrent (Write System Entry Address) */ |
case 0x34: /* PAL_OSF1_wrent (Write System Entry Address) */ |
249 |
/* a0 = new vector, a1 = vector selector */ |
/* a0 = new vector, a1 = vector selector */ |
250 |
debug("[ Alpha PALcode: PAL_OSF1_tbi: a0=%"PRIi64" a1=0x%" |
if (a1 < N_ALPHA_KENTRY) |
251 |
PRIx64" ]\n", (int64_t) cpu->cd.alpha.r[ALPHA_A0], |
cpu->cd.alpha.kentry[a1] = a0; |
252 |
(uint64_t) cpu->cd.alpha.r[ALPHA_A1]); |
else { |
253 |
/* TODO */ |
fatal("[ Alpha PALcode: PAL_OSF1_wrent: attempt to " |
254 |
|
"write to non-implemented selector %i ]\n", |
255 |
|
(int)a1); |
256 |
|
cpu->running = 0; |
257 |
|
} |
258 |
break; |
break; |
259 |
case 0x35: /* PAL_OSF1_swpipl */ |
case 0x35: /* PAL_OSF1_swpipl */ |
260 |
/* a0 = new ipl, v0 = return old ipl */ |
/* a0 = new ipl, v0 = return old ipl */ |
261 |
cpu->cd.alpha.r[ALPHA_V0] = cpu->cd.alpha.ipl; |
cpu->cd.alpha.r[ALPHA_V0] = cpu->cd.alpha.ipl; |
262 |
cpu->cd.alpha.ipl = cpu->cd.alpha.r[ALPHA_A0]; |
cpu->cd.alpha.ipl = a0; |
263 |
break; |
break; |
264 |
case 0x36: /* PAL_OSF1_rdps */ |
case 0x36: /* PAL_OSF1_rdps */ |
265 |
/* TODO */ |
/* TODO */ |
268 |
case 0x37: /* PAL_OSF1_wrkgp */ |
case 0x37: /* PAL_OSF1_wrkgp */ |
269 |
/* "clobbers a0, t0, t8-t11" according to comments in |
/* "clobbers a0, t0, t8-t11" according to comments in |
270 |
NetBSD sources */ |
NetBSD sources */ |
271 |
|
cpu->cd.alpha.kgp = a0; |
272 |
/* KGP shoudl be set to a0. (TODO) */ |
break; |
273 |
|
case 0x38: /* PAL_OSF1_wrusp */ |
274 |
|
/* a0 = value */ |
275 |
|
cpu->cd.alpha.pcb.apcb_usp = a0; |
276 |
|
break; |
277 |
|
case 0x3a: /* PAL_OSF1_rdusp */ |
278 |
|
/* return: v0 = value */ |
279 |
|
cpu->cd.alpha.r[ALPHA_V0] = cpu->cd.alpha.pcb.apcb_usp; |
280 |
break; |
break; |
281 |
case 0x3c: /* PAL_OSF1_whami */ |
case 0x3c: /* PAL_OSF1_whami */ |
282 |
/* Returns CPU id in v0: */ |
/* Returns CPU id in v0: */ |
297 |
case 0x86: /* PAL_OSF1_imb */ |
case 0x86: /* PAL_OSF1_imb */ |
298 |
/* TODO */ |
/* TODO */ |
299 |
break; |
break; |
300 |
|
case 0x3fffffc: |
301 |
|
fatal("[ Alpha: KENTRY not set! Halting. ]"); |
302 |
|
cpu->running = 0; |
303 |
|
break; |
304 |
case 0x3fffffd: |
case 0x3fffffd: |
305 |
fatal("[ Alpha PALcode: Fixup: TODO ]\n"); |
fatal("[ Alpha PALcode: Fixup: TODO ]\n"); |
306 |
/* Return from the fixup call. */ |
/* Return from the fixup call. */ |