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- merged several changes from XScale

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- complain about identify_chain scan with all bits one (jtag communication problem)
- add 0x80000 as a valid size for lpc2000_v2 flash banks (previously only the user accessible 0x7d000 were valid)


git-svn-id: svn://svn.berlios.de/openocd/trunk@129 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
drath
2007-01-31 10:59:20 +00:00
parent c7383a8bea
commit 4102c78432
6 changed files with 88 additions and 8 deletions
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32
src/jtag/jtag.c
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@@ -95,6 +95,14 @@ tap_transition_t tap_transitions[16] =
{TAP_SDS, TAP_RTI} /* UI */
};
char* jtag_event_strings[] =
{
"SRST asserted",
"TRST asserted",
"SRST released",
"TRST released"
};
enum tap_state end_state = TAP_TLR;
enum tap_state cur_state = TAP_TLR;
int jtag_trst = 0;
@@ -184,6 +192,18 @@ char* jtag_interface = NULL;
int jtag_speed = -1;
/* forward declarations */
int jtag_add_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
int jtag_add_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
int jtag_add_plain_ir_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
int jtag_add_plain_dr_scan(int num_fields, scan_field_t *fields, enum tap_state endstate);
int jtag_add_statemove(enum tap_state endstate);
int jtag_add_pathmove(int num_states, enum tap_state *path);
int jtag_add_runtest(int num_cycles, enum tap_state endstate);
int jtag_add_reset(int trst, int srst);
int jtag_add_end_state(enum tap_state endstate);
int jtag_add_sleep(u32 us);
int jtag_execute_queue(void);
int jtag_cancel_queue(void);
/* jtag commands */
int handle_interface_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
@@ -255,7 +275,7 @@ int jtag_call_event_callbacks(enum jtag_event event)
{
jtag_event_callback_t *callback = jtag_event_callbacks;
DEBUG("jtag event: %i", event);
DEBUG("jtag event: %s", jtag_event_strings[event]);
while (callback)
{
@@ -1128,7 +1148,8 @@ int jtag_examine_chain()
int i;
int bit_count;
int device_count = 0;
u8 valid = 0x0;
u8 zero_check = 0x0;
u8 one_check = 0xff;
field.device = 0;
field.num_bits = sizeof(idcode_buffer) * 8;
@@ -1150,11 +1171,12 @@ int jtag_examine_chain()
for (i = 0; i < JTAG_MAX_CHAIN_SIZE * 4; i++)
{
valid |= idcode_buffer[i];
zero_check |= idcode_buffer[i];
one_check &= idcode_buffer[i];
}
/* if there wasn't a single non-zero bit, the scan isn't valid */
if (!valid)
/* if there wasn't a single non-zero bit or if all bits were one, the scan isn't valid */
if ((zero_check == 0x00) || (one_check == 0xff))
{
ERROR("JTAG communication failure, check connection, JTAG interface, target power etc.");
exit(-1);