[coreboot - Bug #499] coreboot will not boot edk2 on Lenovo T440p with CONFIG_RESOURCE_ALLOCATION_TOP_DOWN enabled, cannot disable this setting during build

Issue #499 has been updated by Matt DeVillier.


bug has been mitigated in the default edk2 branch used by coreboot, so marking fixed

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Bug #499: coreboot will not boot edk2 on Lenovo T440p with CONFIG_RESOURCE_ALLOCATION_TOP_DOWN enabled, cannot disable this setting during build
https://ticket.coreboot.org/issues/499#change-2090

* Author: Oberon 4071
* Status: New
* Priority: Normal
* Assignee: Nico Huber
* Start date: 2023-06-29
* Affected versions: 4.21
* Needs backport to: none
* Related links: https://review.coreboot.org/c/coreboot/+/76198
https://review.coreboot.org/c/coreboot/+/76199
* Affected hardware: lenovo/t440p
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coreboot revision in git: feb27dcbf3fc685b070c950a16e8adec958bc1ce
coreboot revision (git describe --tags): 4.20-520-gfeb27dcbf3
Tested payloads: edk2 from MrChromebox revision uefipayload_202304 and uefipayload_202306

coreboot will not boot my Lenovo ThinkPad T440p with CONFIG_RESOURCE_ALLOCATION_TOP_DOWN enabled, when using the edk2 payload (MrChromebox version, either uefipayload_202304 or uefipayload_202306). The display sometimes turns on, indicating that some of the hardware initialization was successful, but the payload will not start.

I tried to disable CONFIG_RESOURCE_ALLOCATION_TOP_DOWN in .config, but the build process insists on leaving this config enabled. This seems to be caused by the RESOURCE_ALLOCATION_TOP_DOWN setting changed to "def_bool y" in src/device/Kconfig in commit 5226301765ded70e0ef640e5252bbaca8cd14451 (allocator_v4: Treat above 4G resources more natively). The make target for building coreboot seems to automatically rerun olddefconfig, causing this setting to always remain enabled no matter what was previously saved in the .config file.

Modifying src/device/Kconfig to change RESOURCE_ALLOCATION_TOP_DOWN to "def_bool n" appears to fix the problem on my machine.

I have attached my .config file (with CONFIG_RESOURCE_ALLOCATION_TOP_DOWN enabled to reproduce the problem).



---Files--------------------------------
.config (20.7 KB)
console.log (128 KB)
cbmem.txt (151 KB)
cbmem_seabios_with_resource_allocation_top_down.txt (41.1 KB)
dmesg_change_76199.txt (56.7 KB)
cbmem_change_76199.txt (120 KB)
cbmem.txt (116 KB)
cbmem_top_down_n.txt (163 KB)
dmesg_top_down_n.txt (58.2 KB)
dmesg.txt (58.3 KB)
cbmem.txt (166 KB)


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