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ADIv5: Implement function to lookup CoreSight component 

This patch implements "dap_lookup_cs_component()", which allows to lookup CS
component by it's identification.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
This commit is contained in:
Marek Vasut 2010-10-31 07:11:47 +01:00
parent 0649fb2f6c
commit 887cac65b0
2 changed files with 45 additions and 0 deletions
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41
src/target/arm_adi_v5.c
View File

@ -1062,6 +1062,47 @@ int dap_get_debugbase(struct adiv5_dap *dap, int apsel,
return ERROR_OK;
}
int dap_lookup_cs_component(struct adiv5_dap *dap, int apsel,
uint32_t dbgbase, uint8_t type, uint32_t *addr)
{
uint32_t apselold;
uint32_t romentry, entry_offset = 0, component_base, devtype;
int retval = ERROR_FAIL;
if (apsel >= 256)
return ERROR_INVALID_ARGUMENTS;
apselold = dap->apsel;
dap_ap_select(dap, apsel);
do
{
retval = mem_ap_read_atomic_u32(dap, (dbgbase&0xFFFFF000) |
entry_offset, &romentry);
if (retval != ERROR_OK)
return retval;
component_base = (dbgbase & 0xFFFFF000)
+ (romentry & 0xFFFFF000);
if (romentry & 0x1) {
retval = mem_ap_read_atomic_u32(dap,
(component_base & 0xfffff000) | 0xfcc,
&devtype);
if ((devtype & 0xff) == type) {
*addr = component_base;
retval = ERROR_OK;
break;
}
}
entry_offset += 4;
} while (romentry > 0);
dap_ap_select(dap, apselold);
return retval;
}
static int dap_info_command(struct command_context *cmd_ctx,
struct adiv5_dap *dap, int apsel)
{

4
src/target/arm_adi_v5.h
View File

@ -383,6 +383,10 @@ int ahbap_debugport_init(struct adiv5_dap *swjdp);
int dap_get_debugbase(struct adiv5_dap *dap, int apsel,
uint32_t *dbgbase, uint32_t *apid);
/* Lookup CoreSight component */
int dap_lookup_cs_component(struct adiv5_dap *dap, int apsel,
uint32_t dbgbase, uint8_t type, uint32_t *addr);
struct target;
/* Put debug link into SWD mode */