forked from auracaster/openocd
d2308da6e9
Arm DPv1 and DPv2 support banked registers by setting the bank in field DPBANKSEL of register DP_SELECT. Old ST-Link firmware don't support banked registers and setting a bank other than bank zero on DPv1 or DPv2 cause issues in the firmware because it cannot set back bank zero to read CTRL/STAT. New ST-Link firmware mask away DPBANKSEL bits while writing in DP_SELECT but support banked register using the same packed method used by OpenOCD: #define BANK_REG(bank, reg) (((bank) << 4) | (reg)) Add a new macro STLINK_F_HAS_DPBANKSEL for firmware that support arm DPv1 and DPv2, plus trigger an error if banked registers are requested on old firmware. Prevent changing DPBANKSEL on old firmware. Log a debug message when changing DPBANKSEL will be ignored. Change-Id: Iaa592517831d63f8da2290db54f6b32504e3081b Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com> Reviewed-on: http://openocd.zylin.com/4978 Tested-by: jenkins Reviewed-by: Tomas Vanek <vanekt@fbl.cz>