* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
- * along with this program; if not, write to the *
- * Free Software Foundation, Inc., *
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>. *
***************************************************************************/
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <helper/replacements.h>
#include "armv7a.h"
+#include "armv7a_mmu.h"
#include "arm_disassembler.h"
#include "register.h"
goto done;
LOG_USER("Data fault registers DFSR: %8.8" PRIx32
- ", DFAR: %8.8" PRIx32, dfsr, dfar);
+ ", DFAR: %8.8" PRIx32, dfsr, dfar);
LOG_USER("Instruction fault registers IFSR: %8.8" PRIx32
- ", IFAR: %8.8" PRIx32, ifsr, ifar);
+ ", IFAR: %8.8" PRIx32, ifsr, ifar);
done:
/* (void) */ dpm->finish(dpm);
}
-static int armv7a_read_ttbcr(struct target *target)
-{
- struct armv7a_common *armv7a = target_to_armv7a(target);
- struct arm_dpm *dpm = armv7a->arm.dpm;
- uint32_t ttbcr;
- int retval = dpm->prepare(dpm);
- if (retval!=ERROR_OK) goto done;
- /* MRC p15,0,<Rt>,c2,c0,2 ; Read CP15 Translation Table Base Control Register*/
- retval = dpm->instr_read_data_r0(dpm,
- ARMV4_5_MRC(15, 0, 0, 2, 0, 2),
- &ttbcr);
- if (retval!=ERROR_OK) goto done;
- armv7a->armv7a_mmu.ttbr1_used = ((ttbcr & 0x7)!=0)? 1: 0;
- armv7a->armv7a_mmu.ttbr0_mask = 7 << (32 -((ttbcr & 0x7)));
-#if 0
- LOG_INFO("ttb1 %s ,ttb0_mask %x",
- armv7a->armv7a_mmu.ttbr1_used ? "used":"not used",
- armv7a->armv7a_mmu.ttbr0_mask);
-#endif
- if (armv7a->armv7a_mmu.ttbr1_used == 1)
- {
- LOG_INFO("SVC access above %x",
- (0xffffffff & armv7a->armv7a_mmu.ttbr0_mask));
- armv7a->armv7a_mmu.os_border = 0xffffffff & armv7a->armv7a_mmu.ttbr0_mask;
- }
- else
- {
- /* fix me , default is hard coded LINUX border */
- armv7a->armv7a_mmu.os_border = 0xc0000000;
- }
-done:
- dpm->finish(dpm);
- return retval;
-}
-
-/* method adapted to cortex A : reused arm v4 v5 method*/
-int armv7a_mmu_translate_va(struct target *target, uint32_t va, uint32_t *val)
+/* retrieve main id register */
+static int armv7a_read_midr(struct target *target)
{
- uint32_t first_lvl_descriptor = 0x0;
- uint32_t second_lvl_descriptor = 0x0;
- int retval;
+ int retval = ERROR_FAIL;
struct armv7a_common *armv7a = target_to_armv7a(target);
struct arm_dpm *dpm = armv7a->arm.dpm;
- uint32_t ttb = 0; /* default ttb0 */
- if (armv7a->armv7a_mmu.ttbr1_used == -1) armv7a_read_ttbcr(target);
- if ((armv7a->armv7a_mmu.ttbr1_used) &&
- (va > (0xffffffff & armv7a->armv7a_mmu.ttbr0_mask)))
- {
- /* select ttb 1 */
- ttb = 1;
- }
+ uint32_t midr;
retval = dpm->prepare(dpm);
if (retval != ERROR_OK)
goto done;
+ /* MRC p15,0,<Rd>,c0,c0,0; read main id register*/
- /* MRC p15,0,<Rt>,c2,c0,ttb */
retval = dpm->instr_read_data_r0(dpm,
- ARMV4_5_MRC(15, 0, 0, 2, 0, ttb),
- &ttb);
+ ARMV4_5_MRC(15, 0, 0, 0, 0, 0),
+ &midr);
if (retval != ERROR_OK)
- return retval;
- retval = armv7a->armv7a_mmu.read_physical_memory(target,
- (ttb & 0xffffc000) | ((va & 0xfff00000) >> 18),
- 4, 1, (uint8_t*)&first_lvl_descriptor);
- if (retval != ERROR_OK)
- return retval;
- first_lvl_descriptor = target_buffer_get_u32(target, (uint8_t*)
- &first_lvl_descriptor);
- /* reuse armv4_5 piece of code, specific armv7a changes may come later */
- LOG_DEBUG("1st lvl desc: %8.8" PRIx32 "", first_lvl_descriptor);
-
- if ((first_lvl_descriptor & 0x3) == 0)
- {
- LOG_ERROR("Address translation failure");
- return ERROR_TARGET_TRANSLATION_FAULT;
- }
-
-
- if ((first_lvl_descriptor & 0x3) == 2)
- {
- /* section descriptor */
- *val = (first_lvl_descriptor & 0xfff00000) | (va & 0x000fffff);
- return ERROR_OK;
- }
-
- if ((first_lvl_descriptor & 0x3) == 1)
- {
- /* coarse page table */
- retval = armv7a->armv7a_mmu.read_physical_memory(target,
- (first_lvl_descriptor & 0xfffffc00) | ((va & 0x000ff000) >> 10),
- 4, 1, (uint8_t*)&second_lvl_descriptor);
- if (retval != ERROR_OK)
- return retval;
- }
- else if ((first_lvl_descriptor & 0x3) == 3)
- {
- /* fine page table */
- retval = armv7a->armv7a_mmu.read_physical_memory(target,
- (first_lvl_descriptor & 0xfffff000) | ((va & 0x000ffc00) >> 8),
- 4, 1, (uint8_t*)&second_lvl_descriptor);
- if (retval != ERROR_OK)
- return retval;
- }
-
- second_lvl_descriptor = target_buffer_get_u32(target, (uint8_t*)
- &second_lvl_descriptor);
-
- LOG_DEBUG("2nd lvl desc: %8.8" PRIx32 "", second_lvl_descriptor);
-
- if ((second_lvl_descriptor & 0x3) == 0)
- {
- LOG_ERROR("Address translation failure");
- return ERROR_TARGET_TRANSLATION_FAULT;
- }
-
- if ((second_lvl_descriptor & 0x3) == 1)
- {
- /* large page descriptor */
- *val = (second_lvl_descriptor & 0xffff0000) | (va & 0x0000ffff);
- return ERROR_OK;
- }
-
- if ((second_lvl_descriptor & 0x3) == 2)
- {
- /* small page descriptor */
- *val = (second_lvl_descriptor & 0xfffff000) | (va & 0x00000fff);
- return ERROR_OK;
- }
-
- if ((second_lvl_descriptor & 0x3) == 3)
- {
- *val = (second_lvl_descriptor & 0xfffffc00) | (va & 0x000003ff);
- return ERROR_OK;
- }
+ goto done;
- /* should not happen */
- LOG_ERROR("Address translation failure");
- return ERROR_TARGET_TRANSLATION_FAULT;
+ armv7a->rev = (midr & 0xf);
+ armv7a->partnum = (midr >> 4) & 0xfff;
+ armv7a->arch = (midr >> 16) & 0xf;
+ armv7a->variant = (midr >> 20) & 0xf;
+ armv7a->implementor = (midr >> 24) & 0xff;
+ LOG_INFO("%s rev %" PRIx32 ", partnum %" PRIx32 ", arch %" PRIx32
+ ", variant %" PRIx32 ", implementor %" PRIx32,
+ target->cmd_name,
+ armv7a->rev,
+ armv7a->partnum,
+ armv7a->arch,
+ armv7a->variant,
+ armv7a->implementor);
done:
+ dpm->finish(dpm);
return retval;
}
-
-/* V7 method VA TO PA */
-int armv7a_mmu_translate_va_pa(struct target *target, uint32_t va,
- uint32_t *val, int meminfo)
+int armv7a_read_ttbcr(struct target *target)
{
- int retval = ERROR_FAIL;
struct armv7a_common *armv7a = target_to_armv7a(target);
struct arm_dpm *dpm = armv7a->arm.dpm;
- uint32_t virt = va & ~0xfff;
- uint32_t NOS,NS,INNER,OUTER;
- *val = 0xdeadbeef;
+ uint32_t ttbcr, ttbcr_n;
+ int ttbidx;
+ int retval;
+
retval = dpm->prepare(dpm);
if (retval != ERROR_OK)
goto done;
- /* mmu must be enable in order to get a correct translation */
- /* use VA to PA CP15 register for conversion */
- retval = dpm->instr_write_data_r0(dpm,
- ARMV4_5_MCR(15, 0, 0, 7, 8, 0),
- virt);
- if (retval!=ERROR_OK) goto done;
+
+ /* MRC p15,0,<Rt>,c2,c0,2 ; Read CP15 Translation Table Base Control Register*/
retval = dpm->instr_read_data_r0(dpm,
- ARMV4_5_MRC(15, 0, 0, 7, 4, 0),
- val);
- /* decode memory attribute */
- NOS = (*val >> 10) & 1; /* Not Outer shareable */
- NS = (*val >> 9) & 1; /* Non secure */
- INNER = (*val >> 4) & 0x7;
- OUTER = (*val >> 2) & 0x3;
-
- if (retval!=ERROR_OK) goto done;
- *val = (*val & ~0xfff) + (va & 0xfff);
- if (*val == va)
- LOG_WARNING("virt = phys : MMU disable !!");
- if (meminfo)
- {
- LOG_INFO("%x : %x %s outer shareable %s secured",
- va, *val,
- NOS == 1 ? "not" : " ",
- NS == 1 ? "not" :"");
- switch (OUTER) {
- case 0 : LOG_INFO("outer: Non-Cacheable");
- break;
- case 1 : LOG_INFO("outer: Write-Back, Write-Allocate");
- break;
- case 2 : LOG_INFO("outer: Write-Through, No Write-Allocate");
- break;
- case 3 : LOG_INFO("outer: Write-Back, no Write-Allocate");
- break;
- }
- switch (INNER) {
- case 0 : LOG_INFO("inner: Non-Cacheable");
- break;
- case 1 : LOG_INFO("inner: Strongly-ordered");
- break;
- case 3 : LOG_INFO("inner: Device");
- break;
- case 5 : LOG_INFO("inner: Write-Back, Write-Allocate");
- break;
- case 6 : LOG_INFO("inner: Write-Through");
- break;
- case 7 : LOG_INFO("inner: Write-Back, no Write-Allocate");
-
- default: LOG_INFO("inner: %x ???",INNER);
- }
- }
+ ARMV4_5_MRC(15, 0, 0, 2, 0, 2),
+ &ttbcr);
+ if (retval != ERROR_OK)
+ goto done;
-done:
- dpm->finish(dpm);
+ LOG_DEBUG("ttbcr %" PRIx32, ttbcr);
- return retval;
-}
+ ttbcr_n = ttbcr & 0x7;
+ armv7a->armv7a_mmu.ttbcr = ttbcr;
+ armv7a->armv7a_mmu.cached = 1;
-static int armv7a_handle_inner_cache_info_command(struct command_context *cmd_ctx,
- struct armv7a_cache_common *armv7a_cache)
-{
- if (armv7a_cache->ctype == -1)
- {
- command_print(cmd_ctx, "cache not yet identified");
- return ERROR_OK;
+ for (ttbidx = 0; ttbidx < 2; ttbidx++) {
+ /* MRC p15,0,<Rt>,c2,c0,ttbidx */
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 0, 0, 2, 0, ttbidx),
+ &armv7a->armv7a_mmu.ttbr[ttbidx]);
+ if (retval != ERROR_OK)
+ goto done;
}
- command_print(cmd_ctx,
- "D-Cache: linelen %i, associativity %i, nsets %i, cachesize %d KBytes",
- armv7a_cache->d_u_size.linelen,
- armv7a_cache->d_u_size.associativity,
- armv7a_cache->d_u_size.nsets,
- armv7a_cache->d_u_size.cachesize);
+ /*
+ * ARM Architecture Reference Manual (ARMv7-A and ARMv7-Redition),
+ * document # ARM DDI 0406C
+ */
+ armv7a->armv7a_mmu.ttbr_range[0] = 0xffffffff >> ttbcr_n;
+ armv7a->armv7a_mmu.ttbr_range[1] = 0xffffffff;
+ armv7a->armv7a_mmu.ttbr_mask[0] = 0xffffffff << (14 - ttbcr_n);
+ armv7a->armv7a_mmu.ttbr_mask[1] = 0xffffffff << 14;
+ armv7a->armv7a_mmu.cached = 1;
+
+ retval = armv7a_read_midr(target);
+ if (retval != ERROR_OK)
+ goto done;
- command_print(cmd_ctx,
- "I-Cache: linelen %i, associativity %i, nsets %i, cachesize %d KBytes",
- armv7a_cache->i_size.linelen,
- armv7a_cache->i_size.associativity,
- armv7a_cache->i_size.nsets,
- armv7a_cache->i_size.cachesize);
+ /* FIXME: why this special case based on part number? */
+ if ((armv7a->partnum & 0xf) == 0) {
+ /* ARM DDI 0344H , ARM DDI 0407F */
+ armv7a->armv7a_mmu.ttbr_mask[0] = 7 << (32 - ttbcr_n);
+ }
- return ERROR_OK;
-}
+ LOG_DEBUG("ttbr1 %s, ttbr0_mask %" PRIx32 " ttbr1_mask %" PRIx32,
+ (ttbcr_n != 0) ? "used" : "not used",
+ armv7a->armv7a_mmu.ttbr_mask[0],
+ armv7a->armv7a_mmu.ttbr_mask[1]);
-static int _armv7a_flush_all_data(struct target *target)
-{
- struct armv7a_common *armv7a = target_to_armv7a(target);
- struct arm_dpm *dpm = armv7a->arm.dpm;
- struct armv7a_cachesize *d_u_size =
- &(armv7a->armv7a_mmu.armv7a_cache.d_u_size);
- int32_t c_way, c_index = d_u_size->index;
- int retval;
- /* check that cache data is on at target halt */
- if (!armv7a->armv7a_mmu.armv7a_cache.d_u_cache_enabled)
- {
- LOG_INFO("flushed not performed :cache not on at target halt");
- return ERROR_OK;
- }
- retval = dpm->prepare(dpm);
- if (retval != ERROR_OK) goto done;
- do {
- c_way = d_u_size->way;
- do {
- uint32_t value = (c_index << d_u_size->index_shift)
- | (c_way << d_u_size->way_shift);
- /* DCCISW */
- //LOG_INFO ("%d %d %x",c_way,c_index,value);
- retval = dpm->instr_write_data_r0(dpm,
- ARMV4_5_MCR(15, 0, 0, 7, 14, 2),
- value);
- if (retval!= ERROR_OK) goto done;
- c_way -= 1;
- } while (c_way >=0);
- c_index -= 1;
- } while (c_index >=0);
- return retval;
done:
- LOG_ERROR("flushed failed");
dpm->finish(dpm);
return retval;
}
-static int armv7a_flush_all_data( struct target * target)
-{
- int retval = ERROR_FAIL;
- /* check that armv7a_cache is correctly identify */
- struct armv7a_common *armv7a = target_to_armv7a(target);
- if (armv7a->armv7a_mmu.armv7a_cache.ctype == -1)
- {
- LOG_ERROR("trying to flush un-identified cache");
- return retval;
- }
-
- if (target->smp)
- {
- /* look if all the other target have been flushed in order to flush level
- * 2 */
- struct target_list *head;
- struct target *curr;
- head = target->head;
- while(head != (struct target_list*)NULL)
- {
- curr = head->target;
- if ((curr->state == TARGET_HALTED))
- { LOG_INFO("Wait flushing data l1 on core %d",curr->coreid);
- retval = _armv7a_flush_all_data(curr);
- }
- head = head->next;
- }
- }
- else retval = _armv7a_flush_all_data(target);
- return retval;
-}
-
-
-/* L2 is not specific to armv7a a specific file is needed */
-static int armv7a_l2x_flush_all_data(struct target * target)
-{
-
-#define L2X0_CLEAN_INV_WAY 0x7FC
- int retval = ERROR_FAIL;
- struct armv7a_common *armv7a = target_to_armv7a(target);
- struct armv7a_l2x_cache *l2x_cache = (struct armv7a_l2x_cache*)
- (armv7a->armv7a_mmu.armv7a_cache.l2_cache);
- uint32_t base = l2x_cache->base;
- uint32_t l2_way = l2x_cache->way;
- uint32_t l2_way_val = (1<<l2_way) -1;
- retval = armv7a_flush_all_data(target);
- if (retval!=ERROR_OK) return retval;
- retval = target->type->write_phys_memory(target,
- (uint32_t)(base+(uint32_t)L2X0_CLEAN_INV_WAY),
- (uint32_t)4,
- (uint32_t)1,
- (uint8_t*)&l2_way_val);
- return retval;
-}
-
-static int armv7a_handle_l2x_cache_info_command(struct command_context *cmd_ctx,
- struct armv7a_cache_common *armv7a_cache)
-{
-
- struct armv7a_l2x_cache *l2x_cache = (struct armv7a_l2x_cache*)
- (armv7a_cache->l2_cache);
-
- if (armv7a_cache->ctype == -1)
- {
- command_print(cmd_ctx, "cache not yet identified");
- return ERROR_OK;
- }
-
- command_print(cmd_ctx,
- "L1 D-Cache: linelen %i, associativity %i, nsets %i, cachesize %d KBytes",
- armv7a_cache->d_u_size.linelen,
- armv7a_cache->d_u_size.associativity,
- armv7a_cache->d_u_size.nsets,
- armv7a_cache->d_u_size.cachesize);
-
- command_print(cmd_ctx,
- "L1 I-Cache: linelen %i, associativity %i, nsets %i, cachesize %d KBytes",
- armv7a_cache->i_size.linelen,
- armv7a_cache->i_size.associativity,
- armv7a_cache->i_size.nsets,
- armv7a_cache->i_size.cachesize);
- command_print(cmd_ctx, "L2 unified cache Base Address 0x%x, %d ways",
- l2x_cache->base, l2x_cache->way);
-
-
- return ERROR_OK;
-}
-
-
+/* FIXME: remove it */
static int armv7a_l2x_cache_init(struct target *target, uint32_t base, uint32_t way)
{
struct armv7a_l2x_cache *l2x_cache;
l2x_cache->way = way;
/*LOG_INFO("cache l2 initialized base %x way %d",
l2x_cache->base,l2x_cache->way);*/
- if (armv7a->armv7a_mmu.armv7a_cache.l2_cache)
- {
- LOG_INFO("cache l2 already initialized\n");
- }
- armv7a->armv7a_mmu.armv7a_cache.l2_cache = (void*) l2x_cache;
- /* initialize l1 / l2x cache function */
- armv7a->armv7a_mmu.armv7a_cache.flush_all_data_cache
- = armv7a_l2x_flush_all_data;
- armv7a->armv7a_mmu.armv7a_cache.display_cache_info =
- armv7a_handle_l2x_cache_info_command;
- /* initialize all target in this cluster (smp target)*/
- /* l2 cache must be configured after smp declaration */
- while(head != (struct target_list*)NULL)
- {
+ if (armv7a->armv7a_mmu.armv7a_cache.outer_cache)
+ LOG_INFO("outer cache already initialized\n");
+ armv7a->armv7a_mmu.armv7a_cache.outer_cache = l2x_cache;
+ /* initialize all target in this cluster (smp target)
+ * l2 cache must be configured after smp declaration */
+ while (head != (struct target_list *)NULL) {
curr = head->target;
- if (curr != target)
- {
+ if (curr != target) {
armv7a = target_to_armv7a(curr);
- if (armv7a->armv7a_mmu.armv7a_cache.l2_cache)
- {
- LOG_ERROR("smp target : cache l2 already initialized\n");
- }
- armv7a->armv7a_mmu.armv7a_cache.l2_cache = (void*) l2x_cache;
- armv7a->armv7a_mmu.armv7a_cache.flush_all_data_cache =
- armv7a_l2x_flush_all_data;
- armv7a->armv7a_mmu.armv7a_cache.display_cache_info =
- armv7a_handle_l2x_cache_info_command;
+ if (armv7a->armv7a_mmu.armv7a_cache.outer_cache)
+ LOG_ERROR("smp target : outer cache already initialized\n");
+ armv7a->armv7a_mmu.armv7a_cache.outer_cache = l2x_cache;
}
- head = head -> next;
+ head = head->next;
}
return JIM_OK;
}
+/* FIXME: remove it */
COMMAND_HANDLER(handle_cache_l2x)
{
struct target *target = get_current_target(CMD_CTX);
- uint32_t base, way;
-switch (CMD_ARGC) {
- case 0:
+ uint32_t base, way;
+
+ if (CMD_ARGC != 2)
return ERROR_COMMAND_SYNTAX_ERROR;
- break;
- case 2:
- //command_print(CMD_CTX, "%s %s", CMD_ARGV[0], CMD_ARGV[1]);
+ /* command_print(CMD_CTX, "%s %s", CMD_ARGV[0], CMD_ARGV[1]); */
+ COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], base);
+ COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], way);
- COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], base);
- COMMAND_PARSE_NUMBER(u32, CMD_ARGV[1], way);
+ /* AP address is in bits 31:24 of DP_SELECT */
+ armv7a_l2x_cache_init(target, base, way);
- /* AP address is in bits 31:24 of DP_SELECT */
- armv7a_l2x_cache_init(target, base, way);
- break;
- default:
- return ERROR_COMMAND_SYNTAX_ERROR;
- }
-return ERROR_OK;
+ return ERROR_OK;
}
-
int armv7a_handle_cache_info_command(struct command_context *cmd_ctx,
- struct armv7a_cache_common *armv7a_cache)
+ struct armv7a_cache_common *armv7a_cache)
{
- if (armv7a_cache->ctype == -1)
- {
+ struct armv7a_l2x_cache *l2x_cache = (struct armv7a_l2x_cache *)
+ (armv7a_cache->outer_cache);
+
+ int cl;
+
+ if (armv7a_cache->info == -1) {
command_print(cmd_ctx, "cache not yet identified");
return ERROR_OK;
}
- if (armv7a_cache->display_cache_info)
- armv7a_cache->display_cache_info(cmd_ctx, armv7a_cache);
+ for (cl = 0; cl < armv7a_cache->loc; cl++) {
+ struct armv7a_arch_cache *arch = &(armv7a_cache->arch[cl]);
+
+ if (arch->ctype & 1) {
+ command_print(cmd_ctx,
+ "L%d I-Cache: linelen %" PRIi32
+ ", associativity %" PRIi32
+ ", nsets %" PRIi32
+ ", cachesize %" PRId32 " KBytes",
+ cl+1,
+ arch->i_size.linelen,
+ arch->i_size.associativity,
+ arch->i_size.nsets,
+ arch->i_size.cachesize);
+ }
+
+ if (arch->ctype >= 2) {
+ command_print(cmd_ctx,
+ "L%d D-Cache: linelen %" PRIi32
+ ", associativity %" PRIi32
+ ", nsets %" PRIi32
+ ", cachesize %" PRId32 " KBytes",
+ cl+1,
+ arch->d_u_size.linelen,
+ arch->d_u_size.associativity,
+ arch->d_u_size.nsets,
+ arch->d_u_size.cachesize);
+ }
+ }
+
+ if (l2x_cache != NULL)
+ command_print(cmd_ctx, "Outer unified cache Base Address 0x%" PRIx32 ", %" PRId32 " ways",
+ l2x_cache->base, l2x_cache->way);
+
return ERROR_OK;
}
-
/* retrieve core id cluster id */
static int armv7a_read_mpidr(struct target *target)
{
- int retval = ERROR_FAIL;
+ int retval = ERROR_FAIL;
struct armv7a_common *armv7a = target_to_armv7a(target);
struct arm_dpm *dpm = armv7a->arm.dpm;
- uint32_t mpidr;
+ uint32_t mpidr;
retval = dpm->prepare(dpm);
- if (retval!=ERROR_OK) goto done;
+ if (retval != ERROR_OK)
+ goto done;
/* MRC p15,0,<Rd>,c0,c0,5; read Multiprocessor ID register*/
retval = dpm->instr_read_data_r0(dpm,
ARMV4_5_MRC(15, 0, 0, 0, 0, 5),
&mpidr);
- if (retval!=ERROR_OK) goto done;
- if (mpidr & 1<<31)
- {
+ if (retval != ERROR_OK)
+ goto done;
+
+ /* ARMv7R uses a different format for MPIDR.
+ * When configured uniprocessor (most R cores) it reads as 0.
+ * This will need to be implemented for multiprocessor ARMv7R cores. */
+ if (armv7a->is_armv7r) {
+ if (mpidr)
+ LOG_ERROR("MPIDR nonzero in ARMv7-R target");
+ goto done;
+ }
+
+ if (mpidr & 1<<31) {
armv7a->multi_processor_system = (mpidr >> 30) & 1;
armv7a->cluster_id = (mpidr >> 8) & 0xf;
armv7a->cpu_id = mpidr & 0x3;
- LOG_INFO("%s cluster %x core %x %s", target->cmd_name,
- armv7a->cluster_id,
- armv7a->cpu_id,
- armv7a->multi_processor_system == 0 ? "multi core": "mono core");
+ LOG_INFO("%s cluster %x core %x %s", target_name(target),
+ armv7a->cluster_id,
+ armv7a->cpu_id,
+ armv7a->multi_processor_system == 0 ? "multi core" : "mono core");
- }
- else
- LOG_ERROR("mpdir not in multiprocessor format");
+ } else
+ LOG_ERROR("MPIDR not in multiprocessor format");
done:
dpm->finish(dpm);
}
+static int get_cache_info(struct arm_dpm *dpm, int cl, int ct, uint32_t *cache_reg)
+{
+ int retval = ERROR_OK;
+
+ /* select cache level */
+ retval = dpm->instr_write_data_r0(dpm,
+ ARMV4_5_MCR(15, 2, 0, 0, 0, 0),
+ (cl << 1) | (ct == 1 ? 1 : 0));
+ if (retval != ERROR_OK)
+ goto done;
+
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 1, 0, 0, 0, 0),
+ cache_reg);
+ done:
+ return retval;
+}
+
+static struct armv7a_cachesize decode_cache_reg(uint32_t cache_reg)
+{
+ struct armv7a_cachesize size;
+ int i = 0;
+
+ size.linelen = 16 << (cache_reg & 0x7);
+ size.associativity = ((cache_reg >> 3) & 0x3ff) + 1;
+ size.nsets = ((cache_reg >> 13) & 0x7fff) + 1;
+ size.cachesize = size.linelen * size.associativity * size.nsets / 1024;
+
+ /* compute info for set way operation on cache */
+ size.index_shift = (cache_reg & 0x7) + 4;
+ size.index = (cache_reg >> 13) & 0x7fff;
+ size.way = ((cache_reg >> 3) & 0x3ff);
+
+ while (((size.way << i) & 0x80000000) == 0)
+ i++;
+ size.way_shift = i;
+
+ return size;
+}
int armv7a_identify_cache(struct target *target)
{
int retval = ERROR_FAIL;
struct armv7a_common *armv7a = target_to_armv7a(target);
struct arm_dpm *dpm = armv7a->arm.dpm;
- uint32_t cache_selected,clidr;
- uint32_t cache_i_reg, cache_d_reg;
- struct armv7a_cache_common *cache = &(armv7a->armv7a_mmu.armv7a_cache);
- armv7a_read_ttbcr(target);
+ uint32_t csselr, clidr, ctr;
+ uint32_t cache_reg;
+ int cl, ctype;
+ struct armv7a_cache_common *cache =
+ &(armv7a->armv7a_mmu.armv7a_cache);
+
retval = dpm->prepare(dpm);
+ if (retval != ERROR_OK)
+ goto done;
- if (retval!=ERROR_OK) goto done;
- /* retrieve CLIDR */
- /* mrc p15, 1, r0, c0, c0, 1 @ read clidr */
+ /* retrieve CTR
+ * mrc p15, 0, r0, c0, c0, 1 @ read ctr */
+ retval = dpm->instr_read_data_r0(dpm,
+ ARMV4_5_MRC(15, 0, 0, 0, 0, 1),
+ &ctr);
+ if (retval != ERROR_OK)
+ goto done;
+
+ cache->iminline = 4UL << (ctr & 0xf);
+ cache->dminline = 4UL << ((ctr & 0xf0000) >> 16);
+ LOG_DEBUG("ctr %" PRIx32 " ctr.iminline %" PRId32 " ctr.dminline %" PRId32,
+ ctr, cache->iminline, cache->dminline);
+
+ /* retrieve CLIDR
+ * mrc p15, 1, r0, c0, c0, 1 @ read clidr */
retval = dpm->instr_read_data_r0(dpm,
ARMV4_5_MRC(15, 1, 0, 0, 0, 1),
&clidr);
- if (retval!=ERROR_OK) goto done;
- clidr = (clidr & 0x7000000) >> 23;
- LOG_INFO("number of cache level %d",clidr /2 );
- if ((clidr /2) > 1)
- {
- // FIXME not supported present in cortex A8 and later
- // in cortex A7, A15
- LOG_ERROR("cache l2 present :not supported");
- }
- /* retrieve selected cache */
- /* MRC p15, 2,<Rd>, c0, c0, 0; Read CSSELR */
+ if (retval != ERROR_OK)
+ goto done;
+
+ cache->loc = (clidr & 0x7000000) >> 24;
+ LOG_DEBUG("Number of cache levels to PoC %" PRId32, cache->loc);
+
+ /* retrieve selected cache for later restore
+ * MRC p15, 2,<Rd>, c0, c0, 0; Read CSSELR */
retval = dpm->instr_read_data_r0(dpm,
ARMV4_5_MRC(15, 2, 0, 0, 0, 0),
- &cache_selected);
- if (retval!=ERROR_OK) goto done;
-
- retval = armv7a->arm.mrc(target, 15,
- 2, 0, /* op1, op2 */
- 0, 0, /* CRn, CRm */
- &cache_selected);
- if (retval!=ERROR_OK) goto done;
- /* select instruction cache*/
- /* MCR p15, 2,<Rd>, c0, c0, 0; Write CSSELR */
- /* [0] : 1 instruction cache selection , 0 data cache selection */
- retval = dpm->instr_write_data_r0(dpm,
- ARMV4_5_MRC(15, 2, 0, 0, 0, 0),
- 1);
- if (retval!=ERROR_OK) goto done;
+ &csselr);
+ if (retval != ERROR_OK)
+ goto done;
- /* read CCSIDR*/
- /* MRC P15,1,<RT>,C0, C0,0 ;on cortex A9 read CCSIDR */
- /* [2:0] line size 001 eight word per line */
- /* [27:13] NumSet 0x7f 16KB, 0xff 32Kbytes, 0x1ff 64Kbytes */
- retval = dpm->instr_read_data_r0(dpm,
- ARMV4_5_MRC(15, 1, 0, 0, 0, 0),
- &cache_i_reg);
- if (retval!=ERROR_OK) goto done;
+ /* retrieve all available inner caches */
+ for (cl = 0; cl < cache->loc; clidr >>= 3, cl++) {
+
+ /* isolate cache type at current level */
+ ctype = clidr & 7;
+
+ /* skip reserved values */
+ if (ctype > CACHE_LEVEL_HAS_UNIFIED_CACHE)
+ continue;
+
+ /* separate d or unified d/i cache at this level ? */
+ if (ctype & (CACHE_LEVEL_HAS_UNIFIED_CACHE | CACHE_LEVEL_HAS_D_CACHE)) {
+ /* retrieve d-cache info */
+ retval = get_cache_info(dpm, cl, 0, &cache_reg);
+ if (retval != ERROR_OK)
+ goto done;
+ cache->arch[cl].d_u_size = decode_cache_reg(cache_reg);
+
+ LOG_DEBUG("data/unified cache index %d << %d, way %d << %d",
+ cache->arch[cl].d_u_size.index,
+ cache->arch[cl].d_u_size.index_shift,
+ cache->arch[cl].d_u_size.way,
+ cache->arch[cl].d_u_size.way_shift);
+
+ LOG_DEBUG("cacheline %d bytes %d KBytes asso %d ways",
+ cache->arch[cl].d_u_size.linelen,
+ cache->arch[cl].d_u_size.cachesize,
+ cache->arch[cl].d_u_size.associativity);
+ }
- /* select data cache*/
- retval = dpm->instr_write_data_r0(dpm,
- ARMV4_5_MRC(15, 2, 0, 0, 0, 0),
- 0);
- if (retval!=ERROR_OK) goto done;
+ /* separate i-cache at this level ? */
+ if (ctype & CACHE_LEVEL_HAS_I_CACHE) {
+ /* retrieve i-cache info */
+ retval = get_cache_info(dpm, cl, 1, &cache_reg);
+ if (retval != ERROR_OK)
+ goto done;
+ cache->arch[cl].i_size = decode_cache_reg(cache_reg);
+
+ LOG_DEBUG("instruction cache index %d << %d, way %d << %d",
+ cache->arch[cl].i_size.index,
+ cache->arch[cl].i_size.index_shift,
+ cache->arch[cl].i_size.way,
+ cache->arch[cl].i_size.way_shift);
+
+ LOG_DEBUG("cacheline %d bytes %d KBytes asso %d ways",
+ cache->arch[cl].i_size.linelen,
+ cache->arch[cl].i_size.cachesize,
+ cache->arch[cl].i_size.associativity);
+ }
- retval = dpm->instr_read_data_r0(dpm,
- ARMV4_5_MRC(15, 1, 0, 0, 0, 0),
- &cache_d_reg);
- if (retval!=ERROR_OK) goto done;
+ cache->arch[cl].ctype = ctype;
+ }
/* restore selected cache */
dpm->instr_write_data_r0(dpm,
- ARMV4_5_MRC(15, 2, 0, 0, 0, 0),
- cache_selected);
+ ARMV4_5_MRC(15, 2, 0, 0, 0, 0),
+ csselr);
- if (retval != ERROR_OK) goto done;
- dpm->finish(dpm);
+ if (retval != ERROR_OK)
+ goto done;
- // put fake type
- cache->d_u_size.linelen = 16 << (cache_d_reg & 0x7);
- cache->d_u_size.cachesize = (((cache_d_reg >> 13) & 0x7fff)+1)/8;
- cache->d_u_size.nsets = (cache_d_reg >> 13) & 0x7fff;
- cache->d_u_size.associativity = ((cache_d_reg >> 3) & 0x3ff) +1;
- /* compute info for set way operation on cache */
- cache->d_u_size.index_shift = (cache_d_reg & 0x7) + 4;
- cache->d_u_size.index = (cache_d_reg >> 13) & 0x7fff;
- cache->d_u_size.way = ((cache_d_reg >> 3) & 0x3ff);
- cache->d_u_size.way_shift = cache->d_u_size.way+1;
- {
- int i=0;
- while(((cache->d_u_size.way_shift >> i) & 1)!=1) i++;
- cache->d_u_size.way_shift = 32-i;
- }
- /*LOG_INFO("data cache index %d << %d, way %d << %d",
- cache->d_u_size.index, cache->d_u_size.index_shift,
- cache->d_u_size.way, cache->d_u_size.way_shift);
-
- LOG_INFO("data cache %d bytes %d KBytes asso %d ways",
- cache->d_u_size.linelen,
- cache->d_u_size.cachesize,
- cache->d_u_size.associativity
- );*/
- cache->i_size.linelen = 16 << (cache_i_reg & 0x7);
- cache->i_size.associativity = ((cache_i_reg >> 3) & 0x3ff) +1;
- cache->i_size.nsets = (cache_i_reg >> 13) & 0x7fff;
- cache->i_size.cachesize = (((cache_i_reg >> 13) & 0x7fff)+1)/8;
- /* compute info for set way operation on cache */
- cache->i_size.index_shift = (cache_i_reg & 0x7) + 4;
- cache->i_size.index = (cache_i_reg >> 13) & 0x7fff;
- cache->i_size.way = ((cache_i_reg >> 3) & 0x3ff);
- cache->i_size.way_shift = cache->i_size.way+1;
- {
- int i=0;
- while(((cache->i_size.way_shift >> i) & 1)!=1) i++;
- cache->i_size.way_shift = 32-i;
- }
- /*LOG_INFO("instruction cache index %d << %d, way %d << %d",
- cache->i_size.index, cache->i_size.index_shift,
- cache->i_size.way, cache->i_size.way_shift);
-
- LOG_INFO("instruction cache %d bytes %d KBytes asso %d ways",
- cache->i_size.linelen,
- cache->i_size.cachesize,
- cache->i_size.associativity
- );*/
/* if no l2 cache initialize l1 data cache flush function function */
- if (armv7a->armv7a_mmu.armv7a_cache.flush_all_data_cache == NULL)
- {
- armv7a->armv7a_mmu.armv7a_cache.display_cache_info =
- armv7a_handle_inner_cache_info_command;
+ if (armv7a->armv7a_mmu.armv7a_cache.flush_all_data_cache == NULL) {
armv7a->armv7a_mmu.armv7a_cache.flush_all_data_cache =
- armv7a_flush_all_data;
+ armv7a_cache_auto_flush_all_data;
}
- armv7a->armv7a_mmu.armv7a_cache.ctype = 0;
+ armv7a->armv7a_mmu.armv7a_cache.info = 1;
done:
dpm->finish(dpm);
armv7a_read_mpidr(target);
}
+static int armv7a_setup_semihosting(struct target *target, int enable)
+{
+ struct armv7a_common *armv7a = target_to_armv7a(target);
+ uint32_t vcr;
+ int ret;
+
+ ret = mem_ap_read_atomic_u32(armv7a->debug_ap,
+ armv7a->debug_base + CPUDBG_VCR,
+ &vcr);
+ if (ret < 0) {
+ LOG_ERROR("Failed to read VCR register\n");
+ return ret;
+ }
+
+ if (enable)
+ vcr |= DBG_VCR_SVC_MASK;
+ else
+ vcr &= ~DBG_VCR_SVC_MASK;
+ ret = mem_ap_write_atomic_u32(armv7a->debug_ap,
+ armv7a->debug_base + CPUDBG_VCR,
+ vcr);
+ if (ret < 0)
+ LOG_ERROR("Failed to write VCR register\n");
+
+ return ret;
+}
int armv7a_init_arch_info(struct target *target, struct armv7a_common *armv7a)
{
struct arm *arm = &armv7a->arm;
arm->arch_info = armv7a;
target->arch_info = &armv7a->arm;
+ arm->setup_semihosting = armv7a_setup_semihosting;
/* target is useful in all function arm v4 5 compatible */
armv7a->arm.target = target;
- armv7a->arm.common_magic = ARM_COMMON_MAGIC;
+ armv7a->arm.common_magic = ARM_COMMON_MAGIC;
armv7a->common_magic = ARMV7_COMMON_MAGIC;
- armv7a->armv7a_mmu.armv7a_cache.l2_cache = NULL;
- armv7a->armv7a_mmu.armv7a_cache.ctype = -1;
+ armv7a->armv7a_mmu.armv7a_cache.info = -1;
+ armv7a->armv7a_mmu.armv7a_cache.outer_cache = NULL;
armv7a->armv7a_mmu.armv7a_cache.flush_all_data_cache = NULL;
- armv7a->armv7a_mmu.armv7a_cache.display_cache_info = NULL;
+ armv7a->armv7a_mmu.armv7a_cache.auto_cache_enabled = 1;
return ERROR_OK;
}
int armv7a_arch_state(struct target *target)
{
- static const char *state[] =
- {
+ static const char *state[] = {
"disabled", "enabled"
};
struct armv7a_common *armv7a = target_to_armv7a(target);
struct arm *arm = &armv7a->arm;
- if (armv7a->common_magic != ARMV7_COMMON_MAGIC)
- {
+ if (armv7a->common_magic != ARMV7_COMMON_MAGIC) {
LOG_ERROR("BUG: called for a non-ARMv7A target");
return ERROR_COMMAND_SYNTAX_ERROR;
}
arm_arch_state(target);
- LOG_USER("MMU: %s, D-Cache: %s, I-Cache: %s",
- state[armv7a->armv7a_mmu.mmu_enabled],
- state[armv7a->armv7a_mmu.armv7a_cache.d_u_cache_enabled],
- state[armv7a->armv7a_mmu.armv7a_cache.i_cache_enabled]);
+ if (armv7a->is_armv7r) {
+ LOG_USER("D-Cache: %s, I-Cache: %s",
+ state[armv7a->armv7a_mmu.armv7a_cache.d_u_cache_enabled],
+ state[armv7a->armv7a_mmu.armv7a_cache.i_cache_enabled]);
+ } else {
+ LOG_USER("MMU: %s, D-Cache: %s, I-Cache: %s",
+ state[armv7a->armv7a_mmu.mmu_enabled],
+ state[armv7a->armv7a_mmu.armv7a_cache.d_u_cache_enabled],
+ state[armv7a->armv7a_mmu.armv7a_cache.i_cache_enabled]);
+ }
if (arm->core_mode == ARM_MODE_ABT)
armv7a_show_fault_registers(target);
if (target->debug_reason == DBG_REASON_WATCHPOINT)
LOG_USER("Watchpoint triggered at PC %#08x",
- (unsigned) armv7a->dpm.wp_pc);
+ (unsigned) armv7a->dpm.wp_pc);
return ERROR_OK;
}
"",
.usage = "[base_addr] [number_of_way]",
},
- COMMAND_REGISTRATION_DONE
+ COMMAND_REGISTRATION_DONE
};
{
.name = "cache_config",
.mode = COMMAND_EXEC,
- .help = "cache configuation for a target",
+ .help = "cache configuration for a target",
.usage = "",
.chain = l2_cache_commands,
},
COMMAND_REGISTRATION_DONE
};
-
const struct command_registration armv7a_command_handlers[] = {
{
- .chain = dap_command_handlers,
+ .chain = l2x_cache_command_handlers,
},
{
- .chain = l2x_cache_command_handlers,
+ .chain = arm7a_cache_command_handlers,
},
COMMAND_REGISTRATION_DONE
};
-
Code Review / openocd.git / blobdiff