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tools: don't exclude device-tree reserved memory

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... from the device UT listed by platform_gen. The kernel itself
does not care about this memory, and it is just given as device UT.

We also just remove the reserved array entirely from the return of
`get_physical_memory` since it only seems to be a footgun, it's
only used internally to affect what memory the kernel wants to use.

Co-authored-by: Kent McLeod <kent@kry10.com>
Signed-off-by: julia <git.ts@trainwit.ch>
This commit is contained in:
julia
2025-10-16 17:02:38 +11:00
committed by Indan Zupancic
parent 97b25da8b1
commit f9eb65c9a5
4 changed files with 9 additions and 11 deletions
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2
tools/hardware/outputs/c_header.py
View File

@@ -212,7 +212,7 @@ def run(tree: FdtParser, hw_yaml: HardwareYaml, config: Config, kernel_config_di
if not args.header_out:
raise ValueError('You need to specify a header-out to use c header output')
physical_memory, reserved, physBase = hardware.utils.memory.get_physical_memory(tree, config)
physical_memory, physBase = hardware.utils.memory.get_physical_memory(tree, config)
kernel_regions, kernel_macros = get_kernel_devices(tree, hw_yaml, kernel_config_dict)
create_c_header_file(

5
tools/hardware/outputs/json.py
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@@ -56,10 +56,9 @@ def run(tree: FdtParser, hw_yaml: HardwareYaml, config: Config,
if not args.json_out:
raise ValueError('you need to provide a json-out to use the JSON output method')
phys_mem, reserved, _ = hardware.utils.memory.get_physical_memory(tree, config)
phys_mem, _ = hardware.utils.memory.get_physical_memory(tree, config)
kernel_devs = get_kernel_devices(tree, hw_yaml, kernel_config_dict)
dev_mem = hardware.utils.memory.get_addrspace_exclude(
list(reserved) + phys_mem + kernel_devs, config)
dev_mem = hardware.utils.memory.get_addrspace_exclude(phys_mem + kernel_devs, config)
create_json_file(dev_mem, phys_mem, args.json_out)

5
tools/hardware/outputs/yaml.py
View File

@@ -61,10 +61,9 @@ def run(tree: FdtParser, hw_yaml: HardwareYaml, config: Config,
if not args.yaml_out:
raise ValueError('you need to provide a yaml-out to use the yaml output method')
phys_mem, reserved, _ = hardware.utils.memory.get_physical_memory(tree, config)
phys_mem, _ = hardware.utils.memory.get_physical_memory(tree, config)
kernel_devs = get_kernel_devices(tree, hw_yaml, kernel_config_dict)
dev_mem = hardware.utils.memory.get_addrspace_exclude(
list(reserved) + phys_mem + kernel_devs, config)
dev_mem = hardware.utils.memory.get_addrspace_exclude(phys_mem + kernel_devs, config)
create_yaml_file(dev_mem, phys_mem, args.yaml_out)

8
tools/hardware/utils/memory.py
View File

@@ -4,7 +4,7 @@
# SPDX-License-Identifier: GPL-2.0-only
#
from typing import List, Set
from typing import List, Set, Tuple
import hardware
from hardware.config import Config
@@ -83,7 +83,7 @@ def reserve_regions(regions: Set[Region], reserved: Set[Region]) -> Set[Region]:
return ret
def align_memory(regions: Set[Region], config: Config) -> List[Region]:
def align_memory(regions: Set[Region], config: Config) -> Tuple[List[Region], int]:
''' Given a set of regions, sort them and align the first so that the
ELF loader will be able to load the kernel into it. Will return the
aligned memory region list, a set of any regions of memory that were
@@ -99,14 +99,14 @@ def align_memory(regions: Set[Region], config: Config) -> List[Region]:
return ret, physBase
def get_physical_memory(tree: FdtParser, config: Config) -> List[Region]:
def get_physical_memory(tree: FdtParser, config: Config) -> Tuple[List[Region], int]:
''' returns a list of regions representing physical memory as used by the kernel '''
regions = merge_memory_regions(get_memory_regions(tree))
reserved = parse_reserved_regions(tree.get_path('/reserved-memory'))
regions = reserve_regions(regions, reserved)
regions, physBase = align_memory(regions, config)
return regions, reserved, physBase
return regions, physBase
def get_addrspace_exclude(regions: List[Region], config: Config):