add armv7a_cache handlers

[openocd.git] / src / target / armv7a.c

diff --git a/src/target/armv7a.c b/src/target/armv7a.c
index de8a8cbbcbfe3c0a120384b48182a58881cb2373..8219932a22a74a885091b7463f0bd769028076ce 100644 (file)
--- a/src/target/armv7a.c
+++ b/src/target/armv7a.c
@@ -647,15 +647,28 @@ 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_selected, clidr, ctr;
        uint32_t cache_i_reg, cache_d_reg;
        struct armv7a_cache_common *cache = &(armv7a->armv7a_mmu.armv7a_cache);
        if (!armv7a->is_armv7r)
                armv7a_read_ttbcr(target);
        retval = dpm->prepare(dpm);
+       if (retval != ERROR_OK)
+               goto done;
 
+       /* 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,
@@ -806,6 +819,7 @@ int armv7a_init_arch_info(struct target *target, struct armv7a_common *armv7a)
        armv7a->armv7a_mmu.armv7a_cache.ctype = -1;
        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;
 }
 
@@ -869,7 +883,6 @@ const struct command_registration l2x_cache_command_handlers[] = {
        COMMAND_REGISTRATION_DONE
 };
 
-
 const struct command_registration armv7a_command_handlers[] = {
        {
                .chain = dap_command_handlers,
@@ -877,5 +890,8 @@ const struct command_registration armv7a_command_handlers[] = {
        {
                .chain = l2x_cache_command_handlers,
        },
+       {
+               .chain = arm7a_cache_command_handlers,
+       },
        COMMAND_REGISTRATION_DONE
 };