1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
#
# Copyright (c) 2011-2012, ARM Limited. All rights reserved.
#
# This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.php
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#
import os
import firmware_volume
import build_report
import system_table
# Reload external classes
reload(firmware_volume)
reload(build_report)
reload(system_table)
def readMem32(executionContext, address):
bytes = executionContext.getMemoryService().read(address, 4, 32)
return struct.unpack('<I',bytes)[0]
def dump_fv(ec, fv_base, fv_size):
fv = firmware_volume.FirmwareVolume(ec,
int(build.PCDs['gArmTokenSpaceGuid']['PcdFvBaseAddress'][0],16),
int(build.PCDs['gArmTokenSpaceGuid']['PcdFvSize'][0],16))
ffs = fv.get_next_ffs()
while ffs != None:
print "# %s" % ffs
section = ffs.get_next_section()
while section != None:
print "\t%s" % section
try:
print "\t\t- %s" % section.get_debug_filepath()
except Exception:
pass
section = ffs.get_next_section(section)
ffs = fv.get_next_ffs(ffs)
def dump_system_table(ec, mem_base, mem_size):
st = system_table.SystemTable(ec, mem_base, mem_size)
debug_info_table_base = st.get_configuration_table(system_table.DebugInfoTable.CONST_DEBUG_INFO_TABLE_GUID)
debug_info_table = system_table.DebugInfoTable(ec, debug_info_table_base)
debug_info_table.dump()
def load_symbol_from_file(ec, filename, address):
try:
ec.getImageService().addSymbols(filename, address)
except:
try:
# We could get an exception if the symbols are already loaded
ec.getImageService().unloadSymbols(filename)
ec.getImageService().addSymbols(filename, address)
except:
print "Warning: not possible to load symbols from %s" % filename
pass
class ArmPlatform:
def __init__(self, sysmembase=None, sysmemsize=None, fvs={}):
self.sysmembase = sysmembase
self.sysmemsize = sysmemsize
self.fvs = fvs
class ArmPlatformDebugger:
system_table = None
firmware_volumes = {}
REGION_TYPE_SYSMEM = 1
REGION_TYPE_ROM = 2
REGION_TYPE_FV = 3
def __init__(self, ec, report_log, regions):
self.ec = ec
fvs = []
sysmem_base = None
sysmem_size = None
if report_log and os.path.isfile(report_log):
try:
self.build = build_report.BuildReport(report_log)
except IOError:
raise IOError(2, 'Report \'%s\' isnot valid' % report_log)
# Generate list of supported Firmware Volumes
if self.build.PCDs['gArmTokenSpaceGuid'].has_key('PcdFvSize') and int(self.build.PCDs['gArmTokenSpaceGuid']['PcdFvSize'][0],16) != 0:
fvs.append((int(self.build.PCDs['gArmTokenSpaceGuid']['PcdFvBaseAddress'][0],16),int(self.build.PCDs['gArmTokenSpaceGuid']['PcdFvSize'][0],16)))
if self.build.PCDs['gArmTokenSpaceGuid'].has_key('PcdSecureFvSize') and int(self.build.PCDs['gArmTokenSpaceGuid']['PcdSecureFvSize'][0],16) != 0:
fvs.append((int(self.build.PCDs['gArmTokenSpaceGuid']['PcdSecureFvBaseAddress'][0],16),int(self.build.PCDs['gArmTokenSpaceGuid']['PcdSecureFvSize'][0],16)))
if self.build.PCDs['gArmTokenSpaceGuid'].has_key('PcdHypFvSize') and int(self.build.PCDs['gArmTokenSpaceGuid']['PcdHypFvSize'][0],16) != 0:
fvs.append((int(self.build.PCDs['gArmTokenSpaceGuid']['PcdHypFvBaseAddress'][0],16),int(self.build.PCDs['gArmTokenSpaceGuid']['PcdHypFvSize'][0],16)))
sysmem_base = int(self.build.PCDs['gArmTokenSpaceGuid']['PcdSystemMemoryBase'][0],16)
sysmem_size = int(self.build.PCDs['gArmTokenSpaceGuid']['PcdSystemMemorySize'][0],16)
else:
for region in regions:
if region[0] == ArmPlatformDebugger.REGION_TYPE_SYSMEM:
sysmem_base = region[1]
sysmem_size = region[2]
elif region[0] == ArmPlatformDebugger.REGION_TYPE_FV:
fvs.append((region[1],region[2]))
elif region[0] == ArmPlatformDebugger.REGION_TYPE_ROM:
for base in xrange(region[1], region[1] + region[2], 0x400000):
signature = struct.unpack("cccc", self.ec.getMemoryService().read(base, 4, 32))
if signature == FirmwareVolume.CONST_FV_SIGNATURE:
fvs.append((base,0))
else:
print "Region type '%d' Not Supported" % region[0]
self.platform = ArmPlatform(sysmem_base, sysmem_size, fvs)
def in_sysmem(self, addr):
return (self.platform.sysmembase is not None) and (self.platform.sysmembase <= addr) and (addr < self.platform.sysmembase + self.platform.sysmemsize)
def in_fv(self, addr):
return (self.get_fv_at(addr) != None)
def get_fv_at(self, addr):
for fv in self.platform.fvs:
if (fv[0] <= addr) and (addr < fv[0] + fv[1]):
return fv
return None
def load_current_symbols(self):
pc = int(self.ec.getRegisterService().getValue('PC')) & 0xFFFFFFFF
if self.in_fv(pc):
debug_infos = []
(fv_base, fv_size) = self.get_fv_at(pc)
if self.firmware_volumes.has_key(fv_base) == False:
self.firmware_volumes[fv_base] = firmware_volume.FirmwareVolume(self.ec, fv_base, fv_size)
stack_frame = self.ec.getTopLevelStackFrame()
info = self.firmware_volumes[fv_base].load_symbols_at(int(stack_frame.getRegisterService().getValue('PC')) & 0xFFFFFFFF)
debug_infos.append(info)
while stack_frame.next() is not None:
stack_frame = stack_frame.next()
# Stack frame attached to 'PC'
pc = int(stack_frame.getRegisterService().getValue('PC')) & 0xFFFFFFFF
# Check if the symbols for this stack frame have already been loaded
found = False
for debug_info in debug_infos:
if (pc >= debug_info[0]) and (pc < debug_info[0] + debug_info[1]):
found = True
if found == False:
info = self.firmware_volumes[fv_base].load_symbols_at(pc)
debug_infos.append(info)
#self.firmware_volumes[fv_base].load_symbols_at(pc)
elif self.in_sysmem(pc):
debug_infos = []
if self.system_table is None:
# Find the System Table
self.system_table = system_table.SystemTable(self.ec, self.platform.sysmembase, self.platform.sysmemsize)
# Find the Debug Info Table
debug_info_table_base = self.system_table.get_configuration_table(system_table.DebugInfoTable.CONST_DEBUG_INFO_TABLE_GUID)
self.debug_info_table = system_table.DebugInfoTable(self.ec, debug_info_table_base)
stack_frame = self.ec.getTopLevelStackFrame()
info = self.debug_info_table.load_symbols_at(int(stack_frame.getRegisterService().getValue('PC')) & 0xFFFFFFFF)
debug_infos.append(info)
while stack_frame.next() is not None:
stack_frame = stack_frame.next()
# Stack frame attached to 'PC'
pc = int(stack_frame.getRegisterService().getValue('PC')) & 0xFFFFFFFF
# Check if the symbols for this stack frame have already been loaded
found = False
for debug_info in debug_infos:
if (pc >= debug_info[0]) and (pc < debug_info[0] + debug_info[1]):
found = True
if found == False:
info = self.debug_info_table.load_symbols_at(pc)
debug_infos.append(info)
#self.debug_info_table.load_symbols_at(pc)
else:
raise Exception('ArmPlatformDebugger', "Not supported region")
def load_all_symbols(self):
# Load all the XIP symbols attached to the Firmware Volume
for (fv_base, fv_size) in self.platform.fvs:
if self.firmware_volumes.has_key(fv_base) == False:
self.firmware_volumes[fv_base] = firmware_volume.FirmwareVolume(self.ec, fv_base, fv_size)
self.firmware_volumes[fv_base].load_all_symbols()
try:
# Load all symbols of module loaded into System Memory
if self.system_table is None:
# Find the System Table
self.system_table = system_table.SystemTable(self.ec, self.platform.sysmembase, self.platform.sysmemsize)
# Find the Debug Info Table
debug_info_table_base = self.system_table.get_configuration_table(system_table.DebugInfoTable.CONST_DEBUG_INFO_TABLE_GUID)
self.debug_info_table = system_table.DebugInfoTable(self.ec, debug_info_table_base)
self.debug_info_table.load_all_symbols()
except:
# Debugger exception could be excepted if DRAM has not been initialized or if we have not started to run from DRAM yet
print "Note: no symbols have been found in System Memory (possible cause: the UEFI permanent memory has been installed yet)"
pass
|
