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armv7a: add d-cache virtual address range flush function 

This patch adds a function for cleaning & invalidating a virtual
address range from the architecture caches down to the point of
coherence.

Change-Id: I4061ab023a3797fabc967f3a34498034841d52c6
Signed-off-by: Matthias Welwarsky <matthias@welwarsky.de>
Reviewed-on: http://openocd.zylin.com/3026
Reviewed-by: Paul Fertser <fercerpav@gmail.com>
Tested-by: jenkins
This commit is contained in:
Matthias Welwarsky 2015-10-16 09:57:19 +02:00 committed by Paul Fertser
parent cd1a345267
commit 7986faba21
2 changed files with 37 additions and 0 deletions
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35
src/target/armv7a_cache.c
View File

@ -223,6 +223,41 @@ done:
return retval;
}
int armv7a_l1_d_cache_flush_virt(struct target *target, uint32_t virt,
unsigned int size)
{
struct armv7a_common *armv7a = target_to_armv7a(target);
struct arm_dpm *dpm = armv7a->arm.dpm;
struct armv7a_cache_common *armv7a_cache = &armv7a->armv7a_mmu.armv7a_cache;
uint32_t i, linelen = armv7a_cache->dminline;
int retval;
retval = armv7a_l1_d_cache_sanity_check(target);
if (retval != ERROR_OK)
return retval;
retval = dpm->prepare(dpm);
if (retval != ERROR_OK)
goto done;
for (i = 0; i < size; i += linelen) {
uint32_t offs = virt + i;
/* DCCIMVAC */
retval = dpm->instr_write_data_r0(dpm,
ARMV4_5_MCR(15, 0, 0, 7, 14, 1), offs);
if (retval != ERROR_OK)
goto done;
}
return retval;
done:
LOG_ERROR("d-cache invalidate failed");
dpm->finish(dpm);
return retval;
}
int armv7a_l1_i_cache_inval_all(struct target *target)
{
struct armv7a_common *armv7a = target_to_armv7a(target);

2
src/target/armv7a_cache.h
View File

@ -21,6 +21,8 @@
int armv7a_l1_d_cache_clean_virt(struct target *target, uint32_t virt,
unsigned int size);
int armv7a_l1_d_cache_flush_virt(struct target *target, uint32_t virt,
unsigned int size);
int armv7a_l1_i_cache_inval_all(struct target *target);
int armv7a_l1_i_cache_inval_virt(struct target *target, uint32_t virt,
uint32_t size);