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binman: Add support for selecting firmware to use with split-elf

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In some cases it is desired for SPL to start TF-A instead of U-Boot
proper. Add support for a new property fit,firmware that picks a
valid entry and prepends the remaining valid entries to the
loadables list generated by the split-elf generator.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Jonas Karlman 2023-01-21 19:02:12 +00:00 committed by Simon Glass
parent 99e3a2cd4e
commit f584d44c23
4 changed files with 205 additions and 13 deletions
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16
tools/binman/entries.rst
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@ -721,6 +721,12 @@ split-elf
fit,data
Generates a `data = <...>` property with the contents of the segment
fit,firmware
Generates a `firmware = <...>` property. Provides a list of possible
nodes to be used as the `firmware` property value. The first valid
node is picked as the firmware. Any remaining valid nodes is
prepended to the `loadable` property generated by `fit,loadables`
fit,loadables
Generates a `loadable = <...>` property with a list of the generated
nodes (including all nodes if this operation is used multiple times)
@ -791,7 +797,7 @@ Here is an example showing ATF, TEE and a device tree all combined::
@config-SEQ {
description = "conf-NAME.dtb";
fdt = "fdt-SEQ";
firmware = "u-boot";
fit,firmware = "atf-1", "u-boot";
fit,loadables;
};
};
@ -846,15 +852,15 @@ is::
configurations {
default = "config-1";
config-1 {
loadables = "atf-1", "atf-2", "atf-3", "tee-1", "tee-2";
loadables = "u-boot", "atf-2", "atf-3", "tee-1", "tee-2";
description = "rk3399-firefly.dtb";
fdt = "fdt-1";
firmware = "u-boot";
firmware = "atf-1";
};
};
U-Boot SPL can then load the firmware (U-Boot proper) and all the loadables
(ATF and TEE), then proceed with the boot.
U-Boot SPL can then load the firmware (ATF) and all the loadables (U-Boot
proper, ATF and TEE), then proceed with the boot.

62
tools/binman/etype/fit.py
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@ -187,6 +187,12 @@ class Entry_fit(Entry_section):
fit,data
Generates a `data = <...>` property with the contents of the segment
fit,firmware
Generates a `firmware = <...>` property. Provides a list of possible
nodes to be used as the `firmware` property value. The first valid
node is picked as the firmware. Any remaining valid nodes is
prepended to the `loadable` property generated by `fit,loadables`
fit,loadables
Generates a `loadable = <...>` property with a list of the generated
nodes (including all nodes if this operation is used multiple times)
@ -257,7 +263,7 @@ class Entry_fit(Entry_section):
@config-SEQ {
description = "conf-NAME.dtb";
fdt = "fdt-SEQ";
firmware = "u-boot";
fit,firmware = "atf-1", "u-boot";
fit,loadables;
};
};
@ -312,15 +318,15 @@ class Entry_fit(Entry_section):
configurations {
default = "config-1";
config-1 {
loadables = "atf-1", "atf-2", "atf-3", "tee-1", "tee-2";
loadables = "u-boot", "atf-2", "atf-3", "tee-1", "tee-2";
description = "rk3399-firefly.dtb";
fdt = "fdt-1";
firmware = "u-boot";
firmware = "atf-1";
};
};
U-Boot SPL can then load the firmware (U-Boot proper) and all the loadables
(ATF and TEE), then proceed with the boot.
U-Boot SPL can then load the firmware (ATF) and all the loadables (U-Boot
proper, ATF and TEE), then proceed with the boot.
"""
def __init__(self, section, etype, node):
"""
@ -510,6 +516,42 @@ class Entry_fit(Entry_section):
return
fsw.property(pname, prop.bytes)
def _process_firmware_prop(node):
"""Process optional fit,firmware property
Picks the first valid entry for use as the firmware, remaining valid
entries is prepended to loadables
Args:
node (Node): Generator node to process
Returns:
firmware (str): Firmware or None
result (list): List of remaining loadables
"""
val = fdt_util.GetStringList(node, 'fit,firmware')
if val is None:
return None, self._loadables
valid_entries = list(self._loadables)
for name, entry in self.GetEntries().items():
missing = []
entry.CheckMissing(missing)
entry.CheckOptional(missing)
if not missing:
valid_entries.append(name)
firmware = None
result = []
for name in val:
if name in valid_entries:
if not firmware:
firmware = name
elif name not in result:
result.append(name)
for name in self._loadables:
if name != firmware and name not in result:
result.append(name)
return firmware, result
def _gen_fdt_nodes(base_node, node, depth, in_images):
"""Generate FDT nodes
@ -520,20 +562,24 @@ class Entry_fit(Entry_section):
first.
Args:
node (None): Generator node to process
node (Node): Generator node to process
depth: Current node depth (0 is the base 'fit' node)
in_images: True if this is inside the 'images' node, so that
'data' properties should be generated
"""
if self._fdts:
firmware, fit_loadables = _process_firmware_prop(node)
# Generate nodes for each FDT
for seq, fdt_fname in enumerate(self._fdts):
node_name = node.name[1:].replace('SEQ', str(seq + 1))
fname = tools.get_input_filename(fdt_fname + '.dtb')
with fsw.add_node(node_name):
for pname, prop in node.props.items():
if pname == 'fit,loadables':
val = '\0'.join(self._loadables) + '\0'
if pname == 'fit,firmware':
if firmware:
fsw.property_string('firmware', firmware)
elif pname == 'fit,loadables':
val = '\0'.join(fit_loadables) + '\0'
fsw.property('loadables', val.encode('utf-8'))
elif pname == 'fit,operation':
pass

44
tools/binman/ftest.py
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@ -6337,6 +6337,50 @@ fdt fdtmap Extract the devicetree blob from the fdtmap
}
self.assertEqual(expected, props)
def testFitFirmwareLoadables(self):
"""Test an image with an FIT that use fit,firmware"""
if not elf.ELF_TOOLS:
self.skipTest('Python elftools not available')
entry_args = {
'of-list': 'test-fdt1',
'default-dt': 'test-fdt1',
'atf-bl31-path': 'bl31.elf',
'tee-os-path': 'missing.bin',
}
test_subdir = os.path.join(self._indir, TEST_FDT_SUBDIR)
data = self._DoReadFileDtb(
'276_fit_firmware_loadables.dts',
entry_args=entry_args,
extra_indirs=[test_subdir])[0]
dtb = fdt.Fdt.FromData(data)
dtb.Scan()
node = dtb.GetNode('/configurations/conf-uboot-1')
self.assertEqual('u-boot', node.props['firmware'].value)
self.assertEqual(['atf-1', 'atf-2'],
fdt_util.GetStringList(node, 'loadables'))
node = dtb.GetNode('/configurations/conf-atf-1')
self.assertEqual('atf-1', node.props['firmware'].value)
self.assertEqual(['u-boot', 'atf-2'],
fdt_util.GetStringList(node, 'loadables'))
node = dtb.GetNode('/configurations/conf-missing-uboot-1')
self.assertEqual('u-boot', node.props['firmware'].value)
self.assertEqual(['atf-1', 'atf-2'],
fdt_util.GetStringList(node, 'loadables'))
node = dtb.GetNode('/configurations/conf-missing-atf-1')
self.assertEqual('atf-1', node.props['firmware'].value)
self.assertEqual(['u-boot', 'atf-2'],
fdt_util.GetStringList(node, 'loadables'))
node = dtb.GetNode('/configurations/conf-missing-tee-1')
self.assertEqual('atf-1', node.props['firmware'].value)
self.assertEqual(['u-boot', 'atf-2'],
fdt_util.GetStringList(node, 'loadables'))
if __name__ == "__main__":
unittest.main()

96
tools/binman/test/276_fit_firmware_loadables.dts Normal file
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@ -0,0 +1,96 @@
// SPDX-License-Identifier: GPL-2.0+
/dts-v1/;
/ {
#address-cells = <1>;
#size-cells = <1>;
binman {
fit {
description = "test desc";
#address-cells = <1>;
fit,fdt-list = "of-list";
images {
u-boot {
description = "test u-boot";
type = "standalone";
arch = "arm64";
os = "u-boot";
compression = "none";
load = <0x00000000>;
entry = <0x00000000>;
u-boot-nodtb {
};
};
tee {
description = "test tee";
type = "tee";
arch = "arm64";
os = "tee";
compression = "none";
load = <0x00200000>;
tee-os {
optional;
};
};
@atf-SEQ {
fit,operation = "split-elf";
description = "test tf-a";
type = "firmware";
arch = "arm64";
os = "arm-trusted-firmware";
compression = "none";
fit,load;
fit,entry;
fit,data;
atf-bl31 {
};
};
@fdt-SEQ {
description = "test fdt";
type = "flat_dt";
compression = "none";
};
};
configurations {
default = "@conf-uboot-DEFAULT-SEQ";
@conf-uboot-SEQ {
description = "uboot config";
fdt = "fdt-SEQ";
fit,firmware = "u-boot";
fit,loadables;
};
@conf-atf-SEQ {
description = "atf config";
fdt = "fdt-SEQ";
fit,firmware = "atf-1", "u-boot";
fit,loadables;
};
@conf-missing-uboot-SEQ {
description = "missing uboot config";
fdt = "fdt-SEQ";
fit,firmware = "missing-1", "u-boot";
fit,loadables;
};
@conf-missing-atf-SEQ {
description = "missing atf config";
fdt = "fdt-SEQ";
fit,firmware = "missing-1", "atf-1", "u-boot";
fit,loadables;
};
@conf-missing-tee-SEQ {
description = "missing tee config";
fdt = "fdt-SEQ";
fit,firmware = "atf-1", "u-boot", "tee";
fit,loadables;
};
};
};
};
};