From 348f98e6791eae536881b65535a5029e45481334 Mon Sep 17 00:00:00 2001
From: Runmin Wang <runminw@codeaurora.org>
Date: Wed, 14 Dec 2016 14:50:05 -0800
Subject: [PATCH] lrdp-v2: Add support to extract kaslr-offset from imem
Kaslr-offset in stored in imem by the kernel driver. This patch
enables the parser to extract the required offset before parsing.
Change-Id: Ie773a2e52989b0f2a83c19d39ffdba7f77911e39
---
linux-ramdump-parser-v2/boards.py | 1 +
linux-ramdump-parser-v2/ramdump.py | 19 +++++++++++++++++++
2 files changed, 20 insertions(+)
diff --git a/linux-ramdump-parser-v2/boards.py b/linux-ramdump-parser-v2/boards.py
index 250227c..3ed3016 100755
--- a/linux-ramdump-parser-v2/boards.py
+++ b/linux-ramdump-parser-v2/boards.py
@@ -411,6 +411,7 @@ class BoardCobalt(Board):
self.smem_addr = 0x6000000
self.phys_offset = 0x80000000
self.imem_start = 0x14680000
+ self.kaslr_addr = 0x146bf6d0
self.wdog_addr = 0x146BF658
self.imem_file_name = 'OCIMEM.BIN'
diff --git a/linux-ramdump-parser-v2/ramdump.py b/linux-ramdump-parser-v2/ramdump.py
index 9d66627..344cb37 100755
--- a/linux-ramdump-parser-v2/ramdump.py
+++ b/linux-ramdump-parser-v2/ramdump.py
@@ -547,6 +547,12 @@ class RamDump():
self.ebi_start = self.ebi_files[0][1]
if self.phys_offset is None:
self.get_hw_id()
+
+ if self.kaslr_offset is None:
+ self.get_kaslr_offset()
+ if self.kaslr_offset is not None:
+ self.gdbmi.kaslr_offset = self.kaslr_offset
+
if options.phys_offset is not None:
print_out_str(
'[!!!] Phys offset was set to {0:x}'.format(\
@@ -968,6 +974,18 @@ class RamDump():
else:
return self.read_word(self.tz_addr, False)
+ def get_kaslr_offset(self):
+ if(self.kaslr_addr is None):
+ print_out_str('!!!! Kaslr addr is not provided.')
+ else:
+ kaslr_magic = self.read_u32(self.kaslr_addr, False)
+ if kaslr_magic != 0xdead4ead:
+ print_out_str('!!!! Kaslr magic does not match.')
+ self.kaslr_offset = None
+ else:
+ self.kaslr_offset = self.read_u64(self.kaslr_addr + 4, False)
+ print_out_str("The kaslr_offset extracted is: " + str(hex(self.kaslr_offset)))
+
def get_hw_id(self, add_offset=True):
socinfo_format = -1
socinfo_id = -1
@@ -1054,6 +1072,7 @@ class RamDump():
self.hw_id = board.board_num
self.cpu_type = board.cpu
self.imem_fname = board.imem_file_name
+ self.kaslr_addr = board.kaslr_addr
return True
def resolve_virt(self, virt_or_name):
--
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