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fix(partition_table): Check partition size for type APP

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The size of partition of type APP should be multiple of 4 KB. Partition
generation tool now make this as a mandatory requirement. This is
minimum flash erase size. If the size of the APP type partition is not
aligned to 4 KB then the last erase operation could go beyond the allocated
partition and hence may fail. This issue would only be observed when the
firmware size grows very close to the allocated partition size, and hence
causing the OTA update to fail.

For already deployed devices on-field with the size of APP partition not
aligned to flash sector boundary, it is best to ensure that firmware
size always remains within the lower 4 KB boundary of the total
allocated space. While migrating to ESP-IDF 5.3 release, partition table
for an existing project can be adjusted accordingly for the build to
succeed.

Found during discussion in https://github.com/espressif/esp-idf/pull/12460
This commit is contained in:
Harshit Malpani
2023-10-30 18:04:25 +05:30
parent 7c738c0658
commit bbbede07d0
10 changed files with 50 additions and 34 deletions
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11
components/partition_table/test_gen_esp32part_host/gen_esp32part_tests.py
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@@ -410,14 +410,13 @@ ota_1, app, ota_1, , 0x100800
def rge(args):
return self._run_genesp32(sample_csv, args)
# Valid test that would pass with the above partition table
partfile = tempfile.mktemp()
self.assertEqual(rge([partfile]), b'Parsing CSV input...\nVerifying table...')
os.remove(partfile)
# Failure case 1, incorrect ota_0 partition size
# Failure case 1, incorrect ota_1 partition size
self.assertEqual(rge(['-q']),
b'Partition ota_1 invalid: Size 0x100800 is not aligned to 0x1000')
# Failure case 2, incorrect ota_0 partition size
self.assertEqual(rge(['-q', '--secure', 'v1']),
b'Partition ota_0 invalid: Size 0x101000 is not aligned to 0x10000')
# Failure case 2, incorrect ota_1 partition size
# Failure case 3, incorrect ota_1 partition size with Secure Boot V2
self.assertEqual(rge(['-q', '--secure', 'v2']),
b'Partition ota_1 invalid: Size 0x100800 is not aligned to 0x1000')