target/arc: Introduce Actionpoints support

[fw/openocd] / tcl / cpu / arc / v2.tcl

diff --git a/tcl/cpu/arc/v2.tcl b/tcl/cpu/arc/v2.tcl
index ad55361a5482dcb65a0ae26da7ddf3ee607d5b76..a3172c220a1d918b20aae8286db775eaa9b98bfb 100644 (file)
--- a/tcl/cpu/arc/v2.tcl
+++ b/tcl/cpu/arc/v2.tcl
@@ -30,6 +30,32 @@ proc arc_v2_examine_target { {target ""} } {
                r13 r14 r15 r16 r17 r18 r19 r20 r21 r22 r23 r24 r25 \
                gp fp sp ilink r30 blink lp_count pcl
 
+       # Actionpoints
+       if { [arc get-reg-field ap_build version] == 5 } {
+               set ap_build_type [arc get-reg-field ap_build type]
+               # AP_BUILD.TYPE > 0b0110 is reserved in current ISA.
+               # Current ISA supports up to 8 actionpoints.
+               if { $ap_build_type < 8 } {
+                       # Two LSB bits of AP_BUILD.TYPE define amount of actionpoints:
+                       # 0b00 - 2 actionpoints
+                       # 0b01 - 4 actionpoints
+                       # 0b10 - 8 actionpoints
+                       # 0b11 - reserved.
+                       set ap_num [expr 0x2 << ($ap_build_type & 3)]
+                       # Expression on top may produce 16 action points - which is a
+                       # reserved value for now.
+                       if { $ap_num < 16 } {
+                               # Enable actionpoint registers
+                               for {set i 0} {$i < $ap_num} {incr i} {
+                                       arc set-reg-exists ap_amv$i ap_amm$i ap_ac$i
+                               }
+
+                               # Set amount of actionpoints
+                               arc num-actionpoints $ap_num
+                       }
+               }
+       }
+
        # DCCM
        set dccm_version [arc get-reg-field dccm_build version]
        if { $dccm_version == 3 || $dccm_version == 4 } {
@@ -213,6 +239,30 @@ proc arc_v2_init_regs { } {
                0x018 aux_dccm  int
                0x208 aux_iccm  int
 
+               0x220 ap_amv0   uint32
+               0x221 ap_amm0   uint32
+               0x222 ap_ac0    ap_control_t
+               0x223 ap_amv1   uint32
+               0x224 ap_amm1   uint32
+               0x225 ap_ac1    ap_control_t
+               0x226 ap_amv2   uint32
+               0x227 ap_amm2   uint32
+               0x228 ap_ac2    ap_control_t
+               0x229 ap_amv3   uint32
+               0x22A ap_amm3   uint32
+               0x22B ap_ac3    ap_control_t
+               0x22C ap_amv4   uint32
+               0x22D ap_amm4   uint32
+               0x22E ap_ac4    ap_control_t
+               0x22F ap_amv5   uint32
+               0x230 ap_amm5   uint32
+               0x231 ap_ac5    ap_control_t
+               0x232 ap_amv6   uint32
+               0x233 ap_amm6   uint32
+               0x234 ap_ac6    ap_control_t
+               0x235 ap_amv7   uint32
+               0x236 ap_amm7   uint32
+               0x237 ap_ac7    ap_control_t
 
                0x400 eret              code_ptr
                0x401 erbta             code_ptr
@@ -285,4 +335,12 @@ proc arc_v2_init_regs { } {
 
 proc arc_v2_reset { {target ""} } {
        arc_common_reset $target
+
+       # Disable all actionpoints.  Cannot write via regcache yet, because it will
+       # not be flushed and all changes to registers will get lost.  Therefore has
+       # to write directly via JTAG layer...
+       set num_ap [arc num-actionpoints]
+       for {set i 0} {$i < $num_ap} {incr i} {
+               arc jtag set-aux-reg [expr 0x222 + $i * 3] 0
+       }
 }