1 /***************************************************************************
2 * Copyright (C) 2015 by Oleksij Rempel *
3 * linux@rempel-privat.de *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program. If not, see <http://www.gnu.org/licenses/>. *
17 ***************************************************************************/
23 #include "jtag/interface.h"
26 #include "armv7a_cache.h"
27 #include <helper/time_support.h>
29 #include "target_type.h"
31 static int arm7a_l2x_sanity_check(struct target *target)
33 struct armv7a_common *armv7a = target_to_armv7a(target);
34 struct armv7a_l2x_cache *l2x_cache = (struct armv7a_l2x_cache *)
35 (armv7a->armv7a_mmu.armv7a_cache.outer_cache);
37 if (target->state != TARGET_HALTED) {
38 LOG_ERROR("%s: target not halted", __func__);
39 return ERROR_TARGET_NOT_HALTED;
42 if (!l2x_cache || !l2x_cache->base) {
43 LOG_DEBUG("l2x is not configured!");
50 * clean and invalidate complete l2x cache
52 int arm7a_l2x_flush_all_data(struct target *target)
54 struct armv7a_common *armv7a = target_to_armv7a(target);
55 struct armv7a_l2x_cache *l2x_cache = (struct armv7a_l2x_cache *)
56 (armv7a->armv7a_mmu.armv7a_cache.outer_cache);
60 retval = arm7a_l2x_sanity_check(target);
64 l2_way_val = (1 << l2x_cache->way) - 1;
66 return target_write_phys_u32(target,
67 l2x_cache->base + L2X0_CLEAN_INV_WAY,
71 int armv7a_l2x_cache_flush_virt(struct target *target, target_addr_t virt,
74 struct armv7a_common *armv7a = target_to_armv7a(target);
75 struct armv7a_l2x_cache *l2x_cache = (struct armv7a_l2x_cache *)
76 (armv7a->armv7a_mmu.armv7a_cache.outer_cache);
77 /* FIXME: different controllers have different linelen? */
78 uint32_t i, linelen = 32;
81 retval = arm7a_l2x_sanity_check(target);
85 for (i = 0; i < size; i += linelen) {
86 target_addr_t pa, offs = virt + i;
88 /* FIXME: use less verbose virt2phys? */
89 retval = target->type->virt2phys(target, offs, &pa);
90 if (retval != ERROR_OK)
93 retval = target_write_phys_u32(target,
94 l2x_cache->base + L2X0_CLEAN_INV_LINE_PA, pa);
95 if (retval != ERROR_OK)
101 LOG_ERROR("d-cache invalidate failed");
106 static int armv7a_l2x_cache_inval_virt(struct target *target, target_addr_t virt,
109 struct armv7a_common *armv7a = target_to_armv7a(target);
110 struct armv7a_l2x_cache *l2x_cache = (struct armv7a_l2x_cache *)
111 (armv7a->armv7a_mmu.armv7a_cache.outer_cache);
112 /* FIXME: different controllers have different linelen */
113 uint32_t i, linelen = 32;
116 retval = arm7a_l2x_sanity_check(target);
120 for (i = 0; i < size; i += linelen) {
121 target_addr_t pa, offs = virt + i;
123 /* FIXME: use less verbose virt2phys? */
124 retval = target->type->virt2phys(target, offs, &pa);
125 if (retval != ERROR_OK)
128 retval = target_write_phys_u32(target,
129 l2x_cache->base + L2X0_INV_LINE_PA, pa);
130 if (retval != ERROR_OK)
136 LOG_ERROR("d-cache invalidate failed");
141 static int armv7a_l2x_cache_clean_virt(struct target *target, target_addr_t virt,
144 struct armv7a_common *armv7a = target_to_armv7a(target);
145 struct armv7a_l2x_cache *l2x_cache = (struct armv7a_l2x_cache *)
146 (armv7a->armv7a_mmu.armv7a_cache.outer_cache);
147 /* FIXME: different controllers have different linelen */
148 uint32_t i, linelen = 32;
151 retval = arm7a_l2x_sanity_check(target);
155 for (i = 0; i < size; i += linelen) {
156 target_addr_t pa, offs = virt + i;
158 /* FIXME: use less verbose virt2phys? */
159 retval = target->type->virt2phys(target, offs, &pa);
160 if (retval != ERROR_OK)
163 retval = target_write_phys_u32(target,
164 l2x_cache->base + L2X0_CLEAN_LINE_PA, pa);
165 if (retval != ERROR_OK)
171 LOG_ERROR("d-cache invalidate failed");
176 static int arm7a_handle_l2x_cache_info_command(struct command_context *cmd_ctx,
177 struct armv7a_cache_common *armv7a_cache)
179 struct armv7a_l2x_cache *l2x_cache = (struct armv7a_l2x_cache *)
180 (armv7a_cache->outer_cache);
182 if (armv7a_cache->info == -1) {
183 command_print(cmd_ctx, "cache not yet identified");
187 command_print(cmd_ctx,
188 "L2 unified cache Base Address 0x%" PRIx32 ", %" PRId32 " ways",
189 l2x_cache->base, l2x_cache->way);
194 static int armv7a_l2x_cache_init(struct target *target, uint32_t base, uint32_t way)
196 struct armv7a_l2x_cache *l2x_cache;
197 struct target_list *head = target->head;
200 struct armv7a_common *armv7a = target_to_armv7a(target);
201 if (armv7a->armv7a_mmu.armv7a_cache.outer_cache) {
202 LOG_ERROR("L2 cache was already initialised\n");
206 l2x_cache = calloc(1, sizeof(struct armv7a_l2x_cache));
207 l2x_cache->base = base;
208 l2x_cache->way = way;
209 armv7a->armv7a_mmu.armv7a_cache.outer_cache = l2x_cache;
211 /* initialize all targets in this cluster (smp target)
212 * l2 cache must be configured after smp declaration */
213 while (head != (struct target_list *)NULL) {
215 if (curr != target) {
216 armv7a = target_to_armv7a(curr);
217 if (armv7a->armv7a_mmu.armv7a_cache.outer_cache) {
218 LOG_ERROR("smp target : cache l2 already initialized\n");
221 armv7a->armv7a_mmu.armv7a_cache.outer_cache = l2x_cache;
228 COMMAND_HANDLER(arm7a_l2x_cache_info_command)
230 struct target *target = get_current_target(CMD_CTX);
231 struct armv7a_common *armv7a = target_to_armv7a(target);
234 retval = arm7a_l2x_sanity_check(target);
238 return arm7a_handle_l2x_cache_info_command(CMD_CTX,
239 &armv7a->armv7a_mmu.armv7a_cache);
242 COMMAND_HANDLER(arm7a_l2x_cache_flush_all_command)
244 struct target *target = get_current_target(CMD_CTX);
246 return arm7a_l2x_flush_all_data(target);
249 COMMAND_HANDLER(arm7a_l2x_cache_flush_virt_cmd)
251 struct target *target = get_current_target(CMD_CTX);
255 if (CMD_ARGC == 0 || CMD_ARGC > 2)
256 return ERROR_COMMAND_SYNTAX_ERROR;
259 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], size);
263 COMMAND_PARSE_ADDRESS(CMD_ARGV[0], virt);
265 return armv7a_l2x_cache_flush_virt(target, virt, size);
268 COMMAND_HANDLER(arm7a_l2x_cache_inval_virt_cmd)
270 struct target *target = get_current_target(CMD_CTX);
274 if (CMD_ARGC == 0 || CMD_ARGC > 2)
275 return ERROR_COMMAND_SYNTAX_ERROR;
278 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], size);
282 COMMAND_PARSE_ADDRESS(CMD_ARGV[0], virt);
284 return armv7a_l2x_cache_inval_virt(target, virt, size);
287 COMMAND_HANDLER(arm7a_l2x_cache_clean_virt_cmd)
289 struct target *target = get_current_target(CMD_CTX);
293 if (CMD_ARGC == 0 || CMD_ARGC > 2)
294 return ERROR_COMMAND_SYNTAX_ERROR;
297 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], size);
301 COMMAND_PARSE_ADDRESS(CMD_ARGV[0], virt);
303 return armv7a_l2x_cache_clean_virt(target, virt, size);
306 /* FIXME: should we configure way size? or controller type? */
307 COMMAND_HANDLER(armv7a_l2x_cache_conf_cmd)
309 struct target *target = get_current_target(CMD_CTX);
313 return ERROR_COMMAND_SYNTAX_ERROR;
315 /* command_print(CMD_CTX, "%s %s", CMD_ARGV[0], CMD_ARGV[1]); */
316 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], base);
317 COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], way);
319 /* AP address is in bits 31:24 of DP_SELECT */
320 return armv7a_l2x_cache_init(target, base, way);
323 static const struct command_registration arm7a_l2x_cache_commands[] = {
326 .handler = armv7a_l2x_cache_conf_cmd,
328 .help = "configure l2x cache ",
329 .usage = "<base_addr> <number_of_way>",
333 .handler = arm7a_l2x_cache_info_command,
335 .help = "print cache realted information",
340 .handler = arm7a_l2x_cache_flush_all_command,
342 .help = "flush complete l2x cache",
347 .handler = arm7a_l2x_cache_flush_virt_cmd,
349 .help = "flush (clean and invalidate) l2x cache by virtual address offset and range size",
350 .usage = "<virt_addr> [size]",
354 .handler = arm7a_l2x_cache_inval_virt_cmd,
356 .help = "invalidate l2x cache by virtual address offset and range size",
357 .usage = "<virt_addr> [size]",
361 .handler = arm7a_l2x_cache_clean_virt_cmd,
363 .help = "clean l2x cache by virtual address address offset and range size",
364 .usage = "<virt_addr> [size]",
366 COMMAND_REGISTRATION_DONE
369 const struct command_registration arm7a_l2x_cache_command_handler[] = {
373 .help = "l2x cache command group",
375 .chain = arm7a_l2x_cache_commands,
377 COMMAND_REGISTRATION_DONE