raspberrypi/rpi-eeprom
1
0
Fork 0
mirror of https://github.com/raspberrypi/rpi-eeprom.git synced 2026-01-20 21:13:36 +08:00
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #12 from timg236/rpi-eeprom-config-magic

Browse Source 
Rpi eeprom config magic
This commit is contained in:
timg
2019-09-13 09:54:58 +01:00
committed by GitHub
parent 391573d900 311cc79c6f
commit 48a2302bcd
2 changed files with 4 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
.gitignore vendored Normal file
View File

@@ -0,0 +1 @@
*.swp

5
rpi-eeprom-config
View File

@@ -15,7 +15,8 @@ IMAGE_SIZE = 512 * 1024
# The number, order and size of the sections depends on the bootloader version
# but the following mask can be used to test for section headers and skip
# unknown data.
MAGIC_MASK = 0x55aaf00f
MAGIC = 0x55aaf00f
MAGIC_MASK = 0xfffff00f
FILE_MAGIC = 0x55aaf11f # id for modifiable file, currently only bootconf.txt
FILE_HDR_LEN = 20
FILENAME_LEN = 12
@@ -37,7 +38,7 @@ class BootloaderImage(object):
magic = 0
while offset < IMAGE_SIZE:
magic, length = struct.unpack_from('>LL', self._bytes, offset)
if (magic & MAGIC_MASK) != MAGIC_MASK:
if (magic & MAGIC_MASK) != MAGIC:
raise Exception('EEPROM is corrupted')
if magic == FILE_MAGIC: # Found a file