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113 Commits

Author SHA1 Message Date
Matthias Welwarsky
f28d5ee71f aarch64: fix error recovery in aarch64_dpm_prepare 
Flush DTRRX with a dummy read if it's full, clear sticky errors
by writing CSE bit to EDRCR register.

Change-Id: Ia42ae9d3859ba6cbe892d48584e21acdd4e25c84
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
 2017-02-10 14:01:38 +01:00
Matthias Welwarsky
21a5c40430 aarch64: formalize use of CTI in halt and resume 
Use configured CTI base address instead of hardcoded value, if
available.
Use symbolic constants instead of raw hex offsets.
Trim halt and resume code to what is actually necessary.

Change-Id: I4997c2bcca7cebf5ad78859a6a12abe8639594ed
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
 2017-02-10 14:01:38 +01:00
Matthias Welwarsky
4ba8388f26 aarch64: fix context and hybrid hardware breakpoints 
Fix 64bit address setting
Fix register spacing (16 instead of 4)
Set HMC bit for all but linked context match breakpoints,
where the bit is ignored anyway

Change-Id: I48428f39154a6fe5fadc075ca918d1500a0bb241
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
 2017-02-10 14:01:38 +01:00
Matthias Welwarsky
b085570de9 aarch64: deconflict debug register names 
CPUDBG_ -> CPUV8_DBG_ for armv8 debug registers.

Change-Id: I3d24cc209309fa9bbeb5c3e6c88a572383c9360e
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
 2017-02-10 14:01:38 +01:00
Matthias Welwarsky
53573f7860 aarch64: Implement MA mode for bulk memory reads and writes 
- 64bit addresses are supported
- Aarch32 state is supported

Change-Id: I8c37fa166954d09195d08c6963b8017194e350f5
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
 2017-02-10 14:01:38 +01:00
Matthias Welwarsky
db97bb4a9d aarch64: make DCC read/write functions operate on struct armv8_common 
Change the signature of aarch64_(read|write)_dcc[_64] to take a
"struct armv8_common *" as the context to operate on. No functional
change.

Change-Id: Ie501113f65ea22aff2eee173ec717f6908a63494
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
 2017-02-10 14:01:38 +01:00
Matthias Welwarsky
a3b9e12aec aarch64: introduce dpm extension for ARMv8 
Add or move ARMv8 related dpm function to their own source module

Change-Id: Id93d50be0b8635bd40ddb2a74fe8746ff840d736
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
 2017-02-10 14:01:38 +01:00
David Ung
6b554b3b0e aarch64: Correct target state for hardware step 
When using hardware step for doing stepping, the existing DSCR records
the event as external debug request.  This will generate a SIGINT event
to GDB and causes it to stop the stepping process.
For aarch64, read DESR to check if the event is a hardware step and set
state to DBG_REASON_SINGLESTEP.
With this patch, GDB can now do source level stepping.

Change-Id: I1d06f819578c74b3ac17376c67f882adddea1f52
Signed-off-by: David Ung <david.ung.42@gmail.com>
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
 2017-02-10 13:59:15 +01:00
David Ung
a12c15e21f aarch64: Enable resuming with address 
Enable resuming to an address.

Change-Id: I29c7d3b56f6cbf8b3cd02c93733fc96f45000af3
Signed-off-by: David Ung <david.ung.42@gmail.com>
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
 2017-02-10 13:58:05 +01:00
pierre Kuo
13d13b2e2a aarch64: Add instruction stepping support using hardware step 
Use AARCH64's hardware step event to do stepping.

Change-Id: I2d029ceeadd381913d0c3355c8787b11dacff7f7
Signed-off-by: pierre Kuo <vichy.kuo@gmail.com>
Signed-off-by: David Ung <david.ung.42@gmail.com>
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
 2017-02-10 13:57:29 +01:00
David Ung
5ee67ce024 aarch64: Enable halting debug mode on breakpoint set 
Ensure that we allow halting debug mode after setting breakpoint

Change-Id: I6f0d7a4a4775a93c133fb1ec31dfe3324d9f7395
Signed-off-by: David Ung <david.ung.42@gmail.com>
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
 2017-02-10 13:56:39 +01:00
pierre Kuo
236c9966dd aarch64: Add hardware breakpoint support 
Enable the use of hardware breakpoint on AARCH64.

Change-Id: I59caaa6d92ac60278af8938625b1790a1787372f
Signed-off-by: pierre Kuo <vichy.kuo@gmail.com>
Signed-off-by: David Ung <david.ung.42@gmail.com>
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
 2017-02-10 13:55:55 +01:00
David Ung
d376f7f518 aarch64: Add ARMv8 AARCH64 support files 
Add new AARCH64 target and ARMv8 support files.
This is an instantiation from the cortex_a files but modified to support
64bit ARMv8. Not all features are complete, notably breakpts and single
stepping are not yet implemented.
Currently it lets you halt of the processors, resume, dump cpu
registers,
read/write memory and getting a stack trace with gdb.

> halt
invalid mode value encountered 5
target state: halted
unrecognized psr mode: 0x5
target halted in ARM state due to debug-request, current mode:
UNRECOGNIZED
cpsr: 0x600001c5 pc: 0x00093528
MMU: disabled, D-Cache: disabled, I-Cache: disabled

> targets
    TargetName         Type       Endian TapName            State
--  ------------------ ---------- ------ ------------------ ------------
 0* cpu0               aarch64    little cpu.dap            halted

> reg
===== arm v8 registers
(0) r0 (/64): 0x00000000FFFFFFED (dirty)
(1) r1 (/64): 0x00000000F76E4000
(2) r2 (/64): 0x0000000000000000
(3) r3 (/64): 0x0000000000010000
(4) r4 (/64): 0xFFFFFFC06E2939E1
(5) r5 (/64): 0x0000000000000018
(6) r6 (/64): 0x003A699CFB3C8480
(7) r7 (/64): 0x0000000053555555
(8) r8 (/64): 0x00FFFFFFFFFFFFFF
(9) r9 (/64): 0x000000001FFEF992
(10) r10 (/64): 0x0000000000000001
(11) r11 (/64): 0x0000000000000000
(12) r12 (/64): 0x00000000000000F0
(13) r13 (/64): 0x00000000EFDFEAC8
(14) r14 (/64): 0x00000000F6DDA659
(15) r15 (/64): 0x0000000000000000
(16) r16 (/64): 0xFFFFFFC0000F9094
(17) r17 (/64): 0x0000000000000000
(18) r18 (/64): 0x0000000000000000
(19) r19 (/64): 0xFFFFFFC00087C000
(20) r20 (/64): 0x0000000000000002
(21) r21 (/64): 0xFFFFFFC000867C28
(22) r22 (/64): 0xFFFFFFC000916A52
(23) r23 (/64): 0xFFFFFFC00116D8B0
(24) r24 (/64): 0xFFFFFFC000774A0C
(25) r25 (/64): 0x000000008007B000
(26) r26 (/64): 0x000000008007D000
(27) r27 (/64): 0xFFFFFFC000080450
(28) r28 (/64): 0x0000004080000000
(29) r29 (/64): 0xFFFFFFC00087FF20
(30) r30 (/64): 0xFFFFFFC000085114
(31) sp (/64): 0xFFFFFFC00087FF20
(32) pc (/64): 0xFFFFFFC000093528
(33) xPSR (/64): 0x00000000600001C5

And from gdb

(gdb) bt
 #0  cpu_do_idle () at /mnt/host/source/src/third_party/kernel/3.14/arch/arm64/mm/proc.S:87
 #1  0xffffffc000085114 in arch_cpu_idle () at /mnt/host/source/src/third_party/kernel/3.14/arch/arm64/kernel/process.c:107
 #2  0x0000000000000000 in ?? ()

Change-Id: Iccb1d15c7d8ace7b9e811dac3c9757ced4d0f618
Signed-off-by: David Ung <david.ung.42@gmail.com>
Signed-off-by: Matthias Welwarsky <matthias.welwarsky@sysgo.com>
 2017-02-10 13:54:49 +01:00