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- add support for cortex_m3 target_request debugmsgs 

- target request handler disabled by default until a target has been registered

git-svn-id: svn://svn.berlios.de/openocd/trunk@259 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
ntfreak 2008-01-17 12:45:06 +00:00
parent 1796e1602e
commit 68b97e4b5c
7 changed files with 123 additions and 15 deletions
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3
src/target/arm7_9_common.c
View File

@ -638,6 +638,9 @@ int arm7_9_handle_target_request(void *priv)
arm_jtag_t *jtag_info = &arm7_9->jtag_info;
reg_t *dcc_control = &arm7_9->eice_cache->reg_list[EICE_COMMS_CTRL];
if (!target->dbg_msg_enabled)
return ERROR_OK;
if (target->state == TARGET_RUNNING)
{
/* read DCC control register */

93
src/target/cortex_m3.c
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@ -30,6 +30,7 @@
#include "register.h"
#include "target.h"
#include "target_request.h"
#include "log.h"
#include "jtag.h"
#include "arm_jtag.h"
@ -50,7 +51,8 @@ int cortex_m3_init_target(struct command_context_s *cmd_ctx, struct target_s *ta
int cortex_m3_quit();
int cortex_m3_load_core_reg_u32(target_t *target, enum armv7m_regtype type, u32 num, u32 *value);
int cortex_m3_store_core_reg_u32(target_t *target, enum armv7m_regtype type, u32 num, u32 value);
int cortex_m3_target_request_data(target_t *target, u32 size, u8 *buffer);
target_type_t cortexm3_target =
{
.name = "cortex_m3",
@ -58,8 +60,8 @@ target_type_t cortexm3_target =
.poll = cortex_m3_poll,
.arch_state = armv7m_arch_state,
.target_request_data = NULL,
.target_request_data = cortex_m3_target_request_data,
.halt = cortex_m3_halt,
.resume = cortex_m3_resume,
.step = cortex_m3_step,
@ -168,6 +170,8 @@ int cortex_m3_endreset_event(target_t *target)
ahbap_read_system_atomic_u32(swjdp, DCB_DEMCR, &dcb_demcr);
DEBUG("DCB_DEMCR = 0x%8.8x",dcb_demcr);
ahbap_write_system_u32(swjdp, DCB_DCRDR, 0 );
/* Enable debug requests */
ahbap_read_system_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr);
if (!(cortex_m3->dcb_dhcsr & C_DEBUGEN))
@ -216,15 +220,15 @@ int cortex_m3_examine_debug_reason(target_t *target)
if ((target->debug_reason != DBG_REASON_DBGRQ)
&& (target->debug_reason != DBG_REASON_SINGLESTEP))
{
/* INCOPMPLETE */
/* INCOMPLETE */
if (cortex_m3->nvic_dfsr & 0x2)
if (cortex_m3->nvic_dfsr & DFSR_BKPT)
{
target->debug_reason = DBG_REASON_BREAKPOINT;
if (cortex_m3->nvic_dfsr & 0x4)
if (cortex_m3->nvic_dfsr & DFSR_DWTTRAP)
target->debug_reason = DBG_REASON_WPTANDBKPT;
}
else if (cortex_m3->nvic_dfsr & 0x4)
else if (cortex_m3->nvic_dfsr & DFSR_DWTTRAP)
target->debug_reason = DBG_REASON_WATCHPOINT;
}
@ -701,6 +705,8 @@ int cortex_m3_assert_reset(target_t *target)
DEBUG("target->state: %s", target_state_strings[target->state]);
ahbap_write_system_u32(swjdp, DCB_DCRDR, 0 );
if (target->reset_mode == RESET_RUN)
{
/* Set/Clear C_MASKINTS in a separate operation */
@ -1353,6 +1359,77 @@ int cortex_m3_quit()
return ERROR_OK;
}
int cortex_m3_dcc_read(swjdp_common_t *swjdp, u8 *value, u8 *ctrl)
{
u16 dcrdr;
ahbap_read_buf_u16( swjdp, (u8*)&dcrdr, 1, DCB_DCRDR);
*ctrl = (u8)dcrdr;
*value = (u8)(dcrdr >> 8);
DEBUG("data 0x%x ctrl 0x%x", *value, *ctrl);
/* write ack back to software dcc register
* signify we have read data */
dcrdr = 0;
ahbap_write_buf_u16( swjdp, (u8*)&dcrdr, 1, DCB_DCRDR);
return ERROR_OK;
}
int cortex_m3_target_request_data(target_t *target, u32 size, u8 *buffer)
{
armv7m_common_t *armv7m = target->arch_info;
cortex_m3_common_t *cortex_m3 = armv7m->arch_info;
swjdp_common_t *swjdp = &cortex_m3->swjdp_info;
u8 data;
u8 ctrl;
int i;
for (i = 0; i < (size * 4); i++)
{
cortex_m3_dcc_read(swjdp, &data, &ctrl);
buffer[i] = data;
}
return ERROR_OK;
}
int cortex_m3_handle_target_request(void *priv)
{
target_t *target = priv;
armv7m_common_t *armv7m = target->arch_info;
cortex_m3_common_t *cortex_m3 = armv7m->arch_info;
swjdp_common_t *swjdp = &cortex_m3->swjdp_info;
if (!target->dbg_msg_enabled)
return ERROR_OK;
if (target->state == TARGET_RUNNING)
{
u8 data;
u8 ctrl;
cortex_m3_dcc_read(swjdp, &data, &ctrl);
/* check if we have data */
if (ctrl & (1<<0))
{
u32 request;
request = data;
cortex_m3_dcc_read(swjdp, &data, &ctrl);
request |= (data << 8);
cortex_m3_dcc_read(swjdp, &data, &ctrl);
request |= (data << 16);
cortex_m3_dcc_read(swjdp, &data, &ctrl);
request |= (data << 24);
target_request(target, request);
}
}
return ERROR_OK;
}
int cortex_m3_init_arch_info(target_t *target, cortex_m3_common_t *cortex_m3, int chain_pos, char *variant)
{
armv7m_common_t *armv7m;
@ -1387,6 +1464,8 @@ int cortex_m3_init_arch_info(target_t *target, cortex_m3_common_t *cortex_m3, in
armv7m->store_core_reg_u32 = cortex_m3_store_core_reg_u32;
// armv7m->full_context = cortex_m3_full_context;
target_register_timer_callback(cortex_m3_handle_target_request, 1, 1, target);
return ERROR_OK;
}

8
src/target/cortex_m3.h
View File

@ -101,10 +101,10 @@ extern char* cortex_m3_state_strings[];
/* NVIC_SHCSR bits */
#define SHCSR_BUSFAULTENA (1<<17)
/* NVIC_DFSR bits */
#define DFSR_HALTED 1
#define DFSR_BKPT 2
#define DFSR_DWTTRAP 4
#define DFSR_VCATCH 8
#define DFSR_HALTED 1
#define DFSR_BKPT 2
#define DFSR_DWTTRAP 4
#define DFSR_VCATCH 8
#define FPCR_CODE 0
#define FPCR_LITERAL 1

20
src/target/cortex_swjdp.c
View File

@ -613,6 +613,11 @@ int ahbap_block_read_u32(swjdp_common_t *swjdp, u32 *buffer, int count, u32 addr
int ahbap_read_coreregister_u32(swjdp_common_t *swjdp, u32 *value, int regnum)
{
int retval;
u32 dcrdr;
ahbap_read_system_atomic_u32(swjdp, DCB_DCRDR, &dcrdr);
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
/* ahbap_write_system_u32(swjdp, DCB_DCRSR, regnum); */
@ -623,11 +628,18 @@ int ahbap_read_coreregister_u32(swjdp_common_t *swjdp, u32 *value, int regnum)
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRDR & 0xFFFFFFF0);
ahbap_read_reg_u32(swjdp, AHBAP_BD0 | (DCB_DCRDR & 0xC), value );
return swjdp_transaction_endcheck(swjdp);
retval = swjdp_transaction_endcheck(swjdp);
ahbap_write_system_atomic_u32(swjdp, DCB_DCRDR, dcrdr);
return retval;
}
int ahbap_write_coreregister_u32(swjdp_common_t *swjdp, u32 value, int regnum)
{
int retval;
u32 dcrdr;
ahbap_read_system_atomic_u32(swjdp, DCB_DCRDR, &dcrdr);
swjdp->trans_mode = TRANS_MODE_COMPOSITE;
/* ahbap_write_system_u32(swjdp, DCB_DCRDR, core_regs[i]); */
@ -637,8 +649,10 @@ int ahbap_write_coreregister_u32(swjdp_common_t *swjdp, u32 value, int regnum)
/* ahbap_write_system_u32(swjdp, DCB_DCRSR, i | DCRSR_WnR ); */
ahbap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRSR & 0xFFFFFFF0);
ahbap_write_reg_u32(swjdp, AHBAP_BD0 | (DCB_DCRSR & 0xC), regnum | DCRSR_WnR );
return swjdp_transaction_endcheck(swjdp);
retval = swjdp_transaction_endcheck(swjdp);
ahbap_write_system_atomic_u32(swjdp, DCB_DCRDR, dcrdr);
return retval;
}
int ahbap_debugport_init(swjdp_common_t *swjdp)

3
src/target/target.c
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@ -1065,7 +1065,8 @@ int handle_target_command(struct command_context_s *cmd_ctx, char *cmd, char **a
(*last_target_p)->trace_info->trace_history_overflowed = 0;
(*last_target_p)->dbgmsg = NULL;
(*last_target_p)->dbg_msg_enabled = 0;
(*last_target_p)->type->target_command(cmd_ctx, cmd, args, argc, *last_target_p);
found = 1;

1
src/target/target.h
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@ -170,6 +170,7 @@ typedef struct target_s
struct watchpoint_s *watchpoints; /* list of watchpoints */
struct trace_s *trace_info; /* generic trace information */
struct debug_msg_receiver_s *dbgmsg;/* list of debug message receivers */
u32 dbg_msg_enabled; /* debug message status */
void *arch_info; /* architecture specific information */
struct target_s *next; /* next target in list */
} target_t;

10
src/target/target_request.c
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@ -83,6 +83,8 @@ int target_hexmsg(target_t *target, int size, u32 length)
if ((i%8 == 7) || (i == length - 1))
{
DEBUG("%s", line);
while (c)
{
command_print(c->cmd_ctx, "%s", line);
@ -153,6 +155,9 @@ int add_debug_msg_receiver(struct command_context_s *cmd_ctx, target_t *target)
(*p)->cmd_ctx = cmd_ctx;
(*p)->next = NULL;
/* enable callback */
target->dbg_msg_enabled = 1;
return ERROR_OK;
}
@ -217,6 +222,11 @@ int delete_debug_msg_receiver(struct command_context_s *cmd_ctx, target_t *targe
{
*p = next;
free(c);
if (*p == NULL)
{
/* disable callback */
target->dbg_msg_enabled = 0;
}
return ERROR_OK;
}
else