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arm_adi_v5: fix for csw nonsecure access. 

Add command to fix CSW_SPROT in register AP_CSW.
This solves dap apmem access in non secure access.

Change-Id: I7cfcb6434d75f5cfd4a2630a059901cdeea010ce
Signed-off-by: Michel JAOUEN <michel.jaouen@stericsson.com>
Reviewed-on: http://openocd.zylin.com/1276
Tested-by: jenkins
Reviewed-by: mike brown
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
This commit is contained in:
Michel JAOUEN 2013-03-18 16:45:40 +01:00 committed by Spencer Oliver
parent 74db7f9681
commit 50c9315212
3 changed files with 50 additions and 1 deletions
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5
doc/openocd.texi
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@ -7325,6 +7325,11 @@ memory bus access [0-255], giving additional time to respond to reads.
If @var{value} is defined, first assigns that.
@end deffn
@deffn Command {dap apcsw} [0 / 1]
fix CSW_SPROT from register AP_REG_CSW on selected dap.
Defaulting to 0.
@end deffn
@subsection Cortex-M3 specific commands
@cindex Cortex-M3

44
src/target/arm_adi_v5.c
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@ -137,8 +137,9 @@ void dap_ap_select(struct adiv5_dap *dap, uint8_t ap)
int dap_setup_accessport(struct adiv5_dap *dap, uint32_t csw, uint32_t tar)
{
int retval;
csw = csw | CSW_DBGSWENABLE | CSW_MASTER_DEBUG | CSW_HPROT |
dap->apcsw[dap->ap_current >> 24];
csw = csw | CSW_DBGSWENABLE | CSW_MASTER_DEBUG | CSW_HPROT;
if (csw != dap->ap_csw_value) {
/* LOG_DEBUG("DAP: Set CSW %x",csw); */
retval = dap_queue_ap_write(dap, AP_REG_CSW, csw);
@ -1847,6 +1848,39 @@ COMMAND_HANDLER(dap_apsel_command)
return retval;
}
COMMAND_HANDLER(dap_apcsw_command)
{
struct target *target = get_current_target(CMD_CTX);
struct arm *arm = target_to_arm(target);
struct adiv5_dap *dap = arm->dap;
uint32_t apcsw = dap->apcsw[dap->apsel], sprot = 0;
switch (CMD_ARGC) {
case 0:
command_print(CMD_CTX, "apsel %" PRIi32 " selected, csw 0x%8.8" PRIx32,
(dap->apsel), apcsw);
break;
case 1:
COMMAND_PARSE_NUMBER(u32, CMD_ARGV[0], sprot);
/* AP address is in bits 31:24 of DP_SELECT */
if (sprot > 1)
return ERROR_COMMAND_SYNTAX_ERROR;
if (sprot)
apcsw |= CSW_SPROT;
else
apcsw &= ~CSW_SPROT;
break;
default:
return ERROR_COMMAND_SYNTAX_ERROR;
}
dap->apcsw[dap->apsel] = apcsw;
return 0;
}
COMMAND_HANDLER(dap_apid_command)
{
struct target *target = get_current_target(CMD_CTX);
@ -1901,6 +1935,14 @@ static const struct command_registration dap_commands[] = {
"and display the result",
.usage = "[ap_num]",
},
{
.name = "apcsw",
.handler = dap_apcsw_command,
.mode = COMMAND_EXEC,
.help = "Set csw access bit ",
.usage = "[sprot]",
},
{
.name = "apid",
.handler = dap_apid_command,

2
src/target/arm_adi_v5.h
View File

@ -116,6 +116,7 @@
/* 30:24 - implementation-defined! */
#define CSW_HPROT (1 << 25) /* ? */
#define CSW_MASTER_DEBUG (1 << 29) /* ? */
#define CSW_SPROT (1 << 30)
#define CSW_DBGSWENABLE (1 << 31)
/**
@ -141,6 +142,7 @@ struct adiv5_dap {
/* Control config */
uint32_t dp_ctrl_stat;
uint32_t apcsw[256];
uint32_t apsel;
/**