[PATCH]: 3bcc08d56a target: cortex-m: don't query cache on hla targets

[<ge...@op...>]

This is an automated email from Gerrit.

"Antonio Borneo <bor...@gm...>" just uploaded a new patch set to Gerrit, which you can find at https://review.openocd.org/c/openocd/+/9202

-- gerrit

commit 3bcc08d56a0dc1300c69fc94ed4fe9d158fcc462
Author: Antonio Borneo <bor...@gm...>
Date:   Mon Nov 3 11:18:02 2025 +0100

    target: cortex-m: don't query cache on hla targets
    
    The cache handling code is written and optimized for dap queuing.
    On hla targets it causes a segmentation fault due to uninitialized
    AP pointer still set to NULL.
    
    While it's possible to modify the code to cope with hla targets,
    this would lower the OpenOCD performance on modern adapters.
    
    Make cache handling not available on hla targets.
    
    Reported-by: Tomas Vanek <va...@fb...>
    Change-Id: Ief4499caedcee477b9517a7ad4597d06b5cb061e
    Signed-off-by: Antonio Borneo <bor...@gm...>
    Fixes: 04da6e2c6246 ("target: cortex-m: add support for armv8m caches")

diff --git a/src/target/cortex_m.c b/src/target/cortex_m.c
index 21b611b297..9f0b6284b0 100644
--- a/src/target/cortex_m.c
+++ b/src/target/cortex_m.c
@@ -3007,10 +3007,12 @@ int cortex_m_examine(struct target *target)
 			cortex_m->fp_num_code,
 			cortex_m->dwt_num_comp);
 
-		retval = armv7m_identify_cache(target);
-		if (retval != ERROR_OK) {
-			LOG_ERROR("Cannot detect cache");
-			return retval;
+		if (!armv7m->is_hla_target) {
+			retval = armv7m_identify_cache(target);
+			if (retval != ERROR_OK) {
+				LOG_ERROR("Cannot detect cache");
+				return retval;
+			}
 		}
 	}
 

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