[PATCH 24/25] binman: Support compression of sections
Simon Glass
sjg at chromium.org
Mon Oct 19 04:41:37 CEST 2020
With the previous changes, it is now possible to compress entire
sections. Add some tests to check that compression works correctly,
including updating the metadata.
Also update the documentation.
Signed-off-by: Simon Glass <sjg at chromium.org>
---
tools/binman/README | 8 +
tools/binman/ftest.py | 217 ++++++++++++++++++
tools/binman/test/179_compress_image.dts | 14 ++
tools/binman/test/180_compress_image_less.dts | 14 ++
.../binman/test/181_compress_section_size.dts | 17 ++
tools/binman/test/182_compress_section.dts | 16 ++
tools/binman/test/183_compress_extra.dts | 37 +++
7 files changed, 323 insertions(+)
create mode 100644 tools/binman/test/179_compress_image.dts
create mode 100644 tools/binman/test/180_compress_image_less.dts
create mode 100644 tools/binman/test/181_compress_section_size.dts
create mode 100644 tools/binman/test/182_compress_section.dts
create mode 100644 tools/binman/test/183_compress_extra.dts
diff --git a/tools/binman/README b/tools/binman/README
index c14cee5d115..de1eedfc3f7 100644
--- a/tools/binman/README
+++ b/tools/binman/README
@@ -853,6 +853,14 @@ The entry will then contain the compressed data, using the 'lz4' compression
algorithm. Currently this is the only one that is supported. The uncompressed
size is written to the node in an 'uncomp-size' property, if -u is used.
+Compression is also supported for sections. In that case the entire section is
+compressed in one block, including all its contents. This means that accessing
+an entry from the section required decompressing the entire section. Also, the
+size of a section indicates the space that it consumes in its parent section
+(and typically the image). With compression, the section may contain more data,
+and the uncomp-size property indicates that, as above. The contents of the
+section is compressed first, before any padding is added. This ensures that the
+padding itself is not compressed, which would be a waste of time.
Map files
diff --git a/tools/binman/ftest.py b/tools/binman/ftest.py
index 8b7537e4eca..403cd836b71 100644
--- a/tools/binman/ftest.py
+++ b/tools/binman/ftest.py
@@ -70,6 +70,7 @@ VBLOCK_DATA = b'vblk'
FILES_DATA = (b"sorry I'm late\nOh, don't bother apologising, I'm " +
b"sorry you're alive\n")
COMPRESS_DATA = b'compress xxxxxxxxxxxxxxxxxxxxxx data'
+COMPRESS_DATA_BIG = COMPRESS_DATA * 2
REFCODE_DATA = b'refcode'
FSP_M_DATA = b'fsp_m'
FSP_S_DATA = b'fsp_s'
@@ -174,6 +175,7 @@ class TestFunctional(unittest.TestCase):
os.path.join(cls._indir, 'files'))
TestFunctional._MakeInputFile('compress', COMPRESS_DATA)
+ TestFunctional._MakeInputFile('compress_big', COMPRESS_DATA_BIG)
TestFunctional._MakeInputFile('bl31.bin', ATF_BL31_DATA)
# Add a few .dtb files for testing
@@ -3857,6 +3859,221 @@ class TestFunctional(unittest.TestCase):
tools.GetBytes(ord('!'), 4)) # padding to section size
self.assertEqual(expected, data)
+ def testCompressImage(self):
+ """Test compression of the entire image"""
+ self._CheckLz4()
+ data, _, _, out_dtb_fname = self._DoReadFileDtb(
+ '179_compress_image.dts', use_real_dtb=True, update_dtb=True)
+ dtb = fdt.Fdt(out_dtb_fname)
+ dtb.Scan()
+ props = self._GetPropTree(dtb, ['offset', 'image-pos', 'size',
+ 'uncomp-size'])
+ orig = self._decompress(data)
+ self.assertEquals(COMPRESS_DATA + U_BOOT_DATA, orig)
+
+ # Do a sanity check on various fields
+ image = control.images['image']
+ entries = image.GetEntries()
+ self.assertEqual(2, len(entries))
+
+ entry = entries['blob']
+ self.assertEqual(COMPRESS_DATA, entry.data)
+ self.assertEqual(len(COMPRESS_DATA), entry.size)
+
+ entry = entries['u-boot']
+ self.assertEqual(U_BOOT_DATA, entry.data)
+ self.assertEqual(len(U_BOOT_DATA), entry.size)
+
+ self.assertEqual(len(data), image.size)
+ self.assertEqual(COMPRESS_DATA + U_BOOT_DATA, image.uncomp_data)
+ self.assertEqual(len(COMPRESS_DATA + U_BOOT_DATA), image.uncomp_size)
+ orig = self._decompress(image.data)
+ self.assertEqual(orig, image.uncomp_data)
+
+ expected = {
+ 'blob:offset': 0,
+ 'blob:size': len(COMPRESS_DATA),
+ 'u-boot:offset': len(COMPRESS_DATA),
+ 'u-boot:size': len(U_BOOT_DATA),
+ 'uncomp-size': len(COMPRESS_DATA + U_BOOT_DATA),
+ 'offset': 0,
+ 'image-pos': 0,
+ 'size': len(data),
+ }
+ self.assertEqual(expected, props)
+
+ def testCompressImageLess(self):
+ """Test compression where compression reduces the image size"""
+ self._CheckLz4()
+ data, _, _, out_dtb_fname = self._DoReadFileDtb(
+ '180_compress_image_less.dts', use_real_dtb=True, update_dtb=True)
+ dtb = fdt.Fdt(out_dtb_fname)
+ dtb.Scan()
+ props = self._GetPropTree(dtb, ['offset', 'image-pos', 'size',
+ 'uncomp-size'])
+ orig = self._decompress(data)
+
+ self.assertEquals(COMPRESS_DATA + COMPRESS_DATA + U_BOOT_DATA, orig)
+
+ # Do a sanity check on various fields
+ image = control.images['image']
+ entries = image.GetEntries()
+ self.assertEqual(2, len(entries))
+
+ entry = entries['blob']
+ self.assertEqual(COMPRESS_DATA_BIG, entry.data)
+ self.assertEqual(len(COMPRESS_DATA_BIG), entry.size)
+
+ entry = entries['u-boot']
+ self.assertEqual(U_BOOT_DATA, entry.data)
+ self.assertEqual(len(U_BOOT_DATA), entry.size)
+
+ self.assertEqual(len(data), image.size)
+ self.assertEqual(COMPRESS_DATA_BIG + U_BOOT_DATA, image.uncomp_data)
+ self.assertEqual(len(COMPRESS_DATA_BIG + U_BOOT_DATA),
+ image.uncomp_size)
+ orig = self._decompress(image.data)
+ self.assertEqual(orig, image.uncomp_data)
+
+ expected = {
+ 'blob:offset': 0,
+ 'blob:size': len(COMPRESS_DATA_BIG),
+ 'u-boot:offset': len(COMPRESS_DATA_BIG),
+ 'u-boot:size': len(U_BOOT_DATA),
+ 'uncomp-size': len(COMPRESS_DATA_BIG + U_BOOT_DATA),
+ 'offset': 0,
+ 'image-pos': 0,
+ 'size': len(data),
+ }
+ self.assertEqual(expected, props)
+
+ def testCompressSectionSize(self):
+ """Test compression of a section with a fixed size"""
+ self._CheckLz4()
+ data, _, _, out_dtb_fname = self._DoReadFileDtb(
+ '181_compress_section_size.dts', use_real_dtb=True, update_dtb=True)
+ dtb = fdt.Fdt(out_dtb_fname)
+ dtb.Scan()
+ props = self._GetPropTree(dtb, ['offset', 'image-pos', 'size',
+ 'uncomp-size'])
+ orig = self._decompress(data)
+ self.assertEquals(COMPRESS_DATA + U_BOOT_DATA, orig)
+ expected = {
+ 'section/blob:offset': 0,
+ 'section/blob:size': len(COMPRESS_DATA),
+ 'section/u-boot:offset': len(COMPRESS_DATA),
+ 'section/u-boot:size': len(U_BOOT_DATA),
+ 'section:offset': 0,
+ 'section:image-pos': 0,
+ 'section:uncomp-size': len(COMPRESS_DATA + U_BOOT_DATA),
+ 'section:size': 0x30,
+ 'offset': 0,
+ 'image-pos': 0,
+ 'size': 0x30,
+ }
+ self.assertEqual(expected, props)
+
+ def testCompressSection(self):
+ """Test compression of a section with no fixed size"""
+ self._CheckLz4()
+ data, _, _, out_dtb_fname = self._DoReadFileDtb(
+ '182_compress_section.dts', use_real_dtb=True, update_dtb=True)
+ dtb = fdt.Fdt(out_dtb_fname)
+ dtb.Scan()
+ props = self._GetPropTree(dtb, ['offset', 'image-pos', 'size',
+ 'uncomp-size'])
+ orig = self._decompress(data)
+ self.assertEquals(COMPRESS_DATA + U_BOOT_DATA, orig)
+ expected = {
+ 'section/blob:offset': 0,
+ 'section/blob:size': len(COMPRESS_DATA),
+ 'section/u-boot:offset': len(COMPRESS_DATA),
+ 'section/u-boot:size': len(U_BOOT_DATA),
+ 'section:offset': 0,
+ 'section:image-pos': 0,
+ 'section:uncomp-size': len(COMPRESS_DATA + U_BOOT_DATA),
+ 'section:size': len(data),
+ 'offset': 0,
+ 'image-pos': 0,
+ 'size': len(data),
+ }
+ self.assertEqual(expected, props)
+
+ def testCompressExtra(self):
+ """Test compression of a section with no fixed size"""
+ self._CheckLz4()
+ data, _, _, out_dtb_fname = self._DoReadFileDtb(
+ '183_compress_extra.dts', use_real_dtb=True, update_dtb=True)
+ dtb = fdt.Fdt(out_dtb_fname)
+ dtb.Scan()
+ props = self._GetPropTree(dtb, ['offset', 'image-pos', 'size',
+ 'uncomp-size'])
+
+ base = data[len(U_BOOT_DATA):]
+ self.assertEquals(U_BOOT_DATA, base[:len(U_BOOT_DATA)])
+ rest = base[len(U_BOOT_DATA):]
+
+ # Check compressed data
+ section1 = self._decompress(rest)
+ expect1 = tools.Compress(COMPRESS_DATA + U_BOOT_DATA, 'lz4')
+ self.assertEquals(expect1, rest[:len(expect1)])
+ self.assertEquals(COMPRESS_DATA + U_BOOT_DATA, section1)
+ rest1 = rest[len(expect1):]
+
+ section2 = self._decompress(rest1)
+ expect2 = tools.Compress(COMPRESS_DATA + COMPRESS_DATA, 'lz4')
+ self.assertEquals(expect2, rest1[:len(expect2)])
+ self.assertEquals(COMPRESS_DATA + COMPRESS_DATA, section2)
+ rest2 = rest1[len(expect2):]
+
+ expect_size = (len(U_BOOT_DATA) + len(U_BOOT_DATA) + len(expect1) +
+ len(expect2) + len(U_BOOT_DATA))
+ #self.assertEquals(expect_size, len(data))
+
+ #self.assertEquals(U_BOOT_DATA, rest2)
+
+ self.maxDiff = None
+ expected = {
+ 'u-boot:offset': 0,
+ 'u-boot:image-pos': 0,
+ 'u-boot:size': len(U_BOOT_DATA),
+
+ 'base:offset': len(U_BOOT_DATA),
+ 'base:image-pos': len(U_BOOT_DATA),
+ 'base:size': len(data) - len(U_BOOT_DATA),
+ 'base/u-boot:offset': 0,
+ 'base/u-boot:image-pos': len(U_BOOT_DATA),
+ 'base/u-boot:size': len(U_BOOT_DATA),
+ 'base/u-boot2:offset': len(U_BOOT_DATA) + len(expect1) +
+ len(expect2),
+ 'base/u-boot2:image-pos': len(U_BOOT_DATA) * 2 + len(expect1) +
+ len(expect2),
+ 'base/u-boot2:size': len(U_BOOT_DATA),
+
+ 'base/section:offset': len(U_BOOT_DATA),
+ 'base/section:image-pos': len(U_BOOT_DATA) * 2,
+ 'base/section:size': len(expect1),
+ 'base/section:uncomp-size': len(COMPRESS_DATA + U_BOOT_DATA),
+ 'base/section/blob:offset': 0,
+ 'base/section/blob:size': len(COMPRESS_DATA),
+ 'base/section/u-boot:offset': len(COMPRESS_DATA),
+ 'base/section/u-boot:size': len(U_BOOT_DATA),
+
+ 'base/section2:offset': len(U_BOOT_DATA) + len(expect1),
+ 'base/section2:image-pos': len(U_BOOT_DATA) * 2 + len(expect1),
+ 'base/section2:size': len(expect2),
+ 'base/section2:uncomp-size': len(COMPRESS_DATA + COMPRESS_DATA),
+ 'base/section2/blob:offset': 0,
+ 'base/section2/blob:size': len(COMPRESS_DATA),
+ 'base/section2/blob2:offset': len(COMPRESS_DATA),
+ 'base/section2/blob2:size': len(COMPRESS_DATA),
+
+ 'offset': 0,
+ 'image-pos': 0,
+ 'size': len(data),
+ }
+ self.assertEqual(expected, props)
+
if __name__ == "__main__":
unittest.main()
diff --git a/tools/binman/test/179_compress_image.dts b/tools/binman/test/179_compress_image.dts
new file mode 100644
index 00000000000..4176b7f2e62
--- /dev/null
+++ b/tools/binman/test/179_compress_image.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0+
+/dts-v1/;
+
+/ {
+ binman {
+ compress = "lz4";
+ blob {
+ filename = "compress";
+ };
+
+ u-boot {
+ };
+ };
+};
diff --git a/tools/binman/test/180_compress_image_less.dts b/tools/binman/test/180_compress_image_less.dts
new file mode 100644
index 00000000000..1d9d57b78c9
--- /dev/null
+++ b/tools/binman/test/180_compress_image_less.dts
@@ -0,0 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0+
+/dts-v1/;
+
+/ {
+ binman {
+ compress = "lz4";
+ blob {
+ filename = "compress_big";
+ };
+
+ u-boot {
+ };
+ };
+};
diff --git a/tools/binman/test/181_compress_section_size.dts b/tools/binman/test/181_compress_section_size.dts
new file mode 100644
index 00000000000..95ed30add1a
--- /dev/null
+++ b/tools/binman/test/181_compress_section_size.dts
@@ -0,0 +1,17 @@
+// SPDX-License-Identifier: GPL-2.0+
+/dts-v1/;
+
+/ {
+ binman {
+ section {
+ size = <0x30>;
+ compress = "lz4";
+ blob {
+ filename = "compress";
+ };
+
+ u-boot {
+ };
+ };
+ };
+};
diff --git a/tools/binman/test/182_compress_section.dts b/tools/binman/test/182_compress_section.dts
new file mode 100644
index 00000000000..dc3e340c5d6
--- /dev/null
+++ b/tools/binman/test/182_compress_section.dts
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0+
+/dts-v1/;
+
+/ {
+ binman {
+ section {
+ compress = "lz4";
+ blob {
+ filename = "compress";
+ };
+
+ u-boot {
+ };
+ };
+ };
+};
diff --git a/tools/binman/test/183_compress_extra.dts b/tools/binman/test/183_compress_extra.dts
new file mode 100644
index 00000000000..59aae822638
--- /dev/null
+++ b/tools/binman/test/183_compress_extra.dts
@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0+
+/dts-v1/;
+
+/ {
+ binman {
+ u-boot {
+ };
+ base {
+ type = "section";
+ u-boot {
+ };
+ section {
+ compress = "lz4";
+ blob {
+ filename = "compress";
+ };
+
+ u-boot {
+ };
+ };
+ section2 {
+ type = "section";
+ compress = "lz4";
+ blob {
+ filename = "compress";
+ };
+ blob2 {
+ type = "blob";
+ filename = "compress";
+ };
+ };
+ u-boot2 {
+ type = "u-boot";
+ };
+ };
+ };
+};
--
2.29.0.rc1.297.gfa9743e501-goog
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