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- fix a regression when using cortex_m3 emulated dcc channel

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git-svn-id: svn://svn.berlios.de/openocd/trunk@2659 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
ntfreak 2009-09-01 10:08:00 +00:00
parent a41725c788
commit fbf775c0b7
1 changed files with 19 additions and 10 deletions
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19
src/target/cortex_m3.c
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@ -105,7 +105,7 @@ int cortexm3_dap_read_coreregister_u32(swjdp_common_t *swjdp, uint32_t *value, i
uint32_t dcrdr;
/* because the DCB_DCRDR is used for the emulated dcc channel
* we gave to save/restore the DCB_DCRDR when used */
* we have to save/restore the DCB_DCRDR when used */
mem_ap_read_u32(swjdp, DCB_DCRDR, &dcrdr);
@ -119,8 +119,13 @@ int cortexm3_dap_read_coreregister_u32(swjdp_common_t *swjdp, uint32_t *value, i
dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRDR & 0xFFFFFFF0);
dap_ap_read_reg_u32(swjdp, AP_REG_BD0 | (DCB_DCRDR & 0xC), value);
mem_ap_write_u32(swjdp, DCB_DCRDR, dcrdr);
retval = swjdp_transaction_endcheck(swjdp);
/* restore DCB_DCRDR - this needs to be in a seperate
* transaction otherwise the emulated DCC channel breaks */
if (retval == ERROR_OK)
retval = mem_ap_write_atomic_u32(swjdp, DCB_DCRDR, dcrdr);
return retval;
}
@ -130,7 +135,7 @@ int cortexm3_dap_write_coreregister_u32(swjdp_common_t *swjdp, uint32_t value, i
uint32_t dcrdr;
/* because the DCB_DCRDR is used for the emulated dcc channel
* we gave to save/restore the DCB_DCRDR when used */
* we have to save/restore the DCB_DCRDR when used */
mem_ap_read_u32(swjdp, DCB_DCRDR, &dcrdr);
@ -144,12 +149,16 @@ int cortexm3_dap_write_coreregister_u32(swjdp_common_t *swjdp, uint32_t value, i
dap_setup_accessport(swjdp, CSW_32BIT | CSW_ADDRINC_OFF, DCB_DCRSR & 0xFFFFFFF0);
dap_ap_write_reg_u32(swjdp, AP_REG_BD0 | (DCB_DCRSR & 0xC), regnum | DCRSR_WnR);
mem_ap_write_u32(swjdp, DCB_DCRDR, dcrdr);
retval = swjdp_transaction_endcheck(swjdp);
/* restore DCB_DCRDR - this needs to be in a seperate
* transaction otherwise the emulated DCC channel breaks */
if (retval == ERROR_OK)
retval = mem_ap_write_atomic_u32(swjdp, DCB_DCRDR, dcrdr);
return retval;
}
int cortex_m3_write_debug_halt_mask(target_t *target, uint32_t mask_on, uint32_t mask_off)
{
/* get pointers to arch-specific information */