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cortex_m3: change cortec_m3 reset_config behaviour 

Currently the cmd 'cortex_m3 reset_config' will overide the default
target's 'reset_config'.
Chnage the behaviour to use the target 'reset_config' if configured and
fallback if not.

Signed-off-by: Spencer Oliver <ntfreak@users.sourceforge.net>
This commit is contained in:
Spencer Oliver 2010-12-02 12:58:50 +00:00
parent c24087d33e
commit f0fac8a2cd
2 changed files with 2 additions and 19 deletions
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20
src/target/cortex_m3.c
View File

@ -927,16 +927,6 @@ static int cortex_m3_assert_reset(struct target *target)
enum reset_types jtag_reset_config = jtag_get_reset_config();
/*
* We can reset Cortex-M3 targets using just the NVIC without
* requiring SRST, getting a SoC reset (or a core-only reset)
* instead of a system reset.
*/
if (!(jtag_reset_config & RESET_HAS_SRST) &&
(cortex_m3->soft_reset_config == CORTEX_M3_RESET_SRST)) {
reset_config = CORTEX_M3_RESET_VECTRESET;
}
/* Enable debug requests */
int retval;
retval = mem_ap_read_atomic_u32(swjdp, DCB_DHCSR, &cortex_m3->dcb_dhcsr);
@ -984,7 +974,7 @@ static int cortex_m3_assert_reset(struct target *target)
return retval;
}
if (reset_config == CORTEX_M3_RESET_SRST)
if (jtag_reset_config & RESET_HAS_SRST)
{
/* default to asserting srst */
if (jtag_reset_config & RESET_SRST_PULLS_TRST)
@ -1945,7 +1935,7 @@ static int cortex_m3_init_arch_info(struct target *target,
/* default reset mode is to use srst if fitted
* if not it will use CORTEX_M3_RESET_VECTRESET */
cortex_m3->soft_reset_config = CORTEX_M3_RESET_SRST;
cortex_m3->soft_reset_config = CORTEX_M3_RESET_VECTRESET;
armv7m->arm.dap = &armv7m->dap;
@ -2138,16 +2128,10 @@ COMMAND_HANDLER(handle_cortex_m3_reset_config_command)
cortex_m3->soft_reset_config = CORTEX_M3_RESET_SYSRESETREQ;
else if (strcmp(*CMD_ARGV, "vectreset") == 0)
cortex_m3->soft_reset_config = CORTEX_M3_RESET_VECTRESET;
else
cortex_m3->soft_reset_config = CORTEX_M3_RESET_SRST;
}
switch (cortex_m3->soft_reset_config)
{
case CORTEX_M3_RESET_SRST:
reset_config = "srst";
break;
case CORTEX_M3_RESET_SYSRESETREQ:
reset_config = "sysresetreq";
break;

1
src/target/cortex_m3.h
View File

@ -136,7 +136,6 @@ struct cortex_m3_dwt_comparator
enum cortex_m3_soft_reset_config
{
CORTEX_M3_RESET_SRST,
CORTEX_M3_RESET_SYSRESETREQ,
CORTEX_M3_RESET_VECTRESET,
};