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cortex_a9: check if MMU is enabled on APB read/write memory 

Signed-off-by: Luca Ellero <lroluk@gmail.com>
This commit is contained in:
Luca Ellero 2011-02-12 11:54:39 +00:00 committed by Øyvind Harboe
parent f609d03f1f
commit aaa52e16ce
1 changed files with 22 additions and 0 deletions
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22
src/target/cortex_a9.c
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@ -1521,6 +1521,7 @@ static int cortex_a9_read_phys_memory(struct target *target,
uint32_t saved_r0, saved_r1; uint32_t saved_r0, saved_r1;
int nbytes = count * size; int nbytes = count * size;
uint32_t data; uint32_t data;
int enabled = 0;
if (target->state != TARGET_HALTED) if (target->state != TARGET_HALTED)
{ {
@ -1528,6 +1529,16 @@ static int cortex_a9_read_phys_memory(struct target *target,
return ERROR_TARGET_NOT_HALTED; return ERROR_TARGET_NOT_HALTED;
} }
retval = cortex_a9_mmu(target, &enabled);
if (retval != ERROR_OK)
return retval;
if (enabled)
{
LOG_WARNING("Reading physical memory through APB with MMU enabled is not yet implemented");
return ERROR_TARGET_FAILURE;
}
/* save registers r0 and r1, we are going to corrupt them */ /* save registers r0 and r1, we are going to corrupt them */
retval = cortex_a9_dap_read_coreregister_u32(target, &saved_r0, 0); retval = cortex_a9_dap_read_coreregister_u32(target, &saved_r0, 0);
if (retval != ERROR_OK) if (retval != ERROR_OK)
@ -1635,6 +1646,7 @@ static int cortex_a9_write_phys_memory(struct target *target,
uint32_t saved_r0, saved_r1; uint32_t saved_r0, saved_r1;
int nbytes = count * size; int nbytes = count * size;
uint32_t data; uint32_t data;
int enabled = 0;
if (target->state != TARGET_HALTED) if (target->state != TARGET_HALTED)
{ {
@ -1642,6 +1654,16 @@ static int cortex_a9_write_phys_memory(struct target *target,
return ERROR_TARGET_NOT_HALTED; return ERROR_TARGET_NOT_HALTED;
} }
retval = cortex_a9_mmu(target, &enabled);
if (retval != ERROR_OK)
return retval;
if (enabled)
{
LOG_WARNING("Writing physical memory through APB with MMU enabled is not yet implemented");
return ERROR_TARGET_FAILURE;
}
/* save registers r0 and r1, we are going to corrupt them */ /* save registers r0 and r1, we are going to corrupt them */
retval = cortex_a9_dap_read_coreregister_u32(target, &saved_r0, 0); retval = cortex_a9_dap_read_coreregister_u32(target, &saved_r0, 0);
if (retval != ERROR_OK) if (retval != ERROR_OK)