Robert Allan JamesandClaude Sonnet 5
cabb0e8bd4
Punch list §25 item 0.6 complete. Ruling applied (AskUserQuestion, this session): DTB is confirmed unreachable on this system's aarch64 firmware too (qemu-efi-aarch64 2025.11-3ubuntu7, same finding as riscv64's item 0.3), so GICD/GICC base addresses and the timer PPI are named QEMU-virt constants with a recorded caveat, not DTB-discovered as the item originally asked. Nothing here was recalled from memory. Base addresses (GICD 0x08000000, GICC 0x08010000) and the timer PPI (30, non-secure EL1 physical) were read out of QEMU 10.2.1's own internal devicetree via `qemu-system-aarch64 -machine virt,dumpdtb=...`, decoded with this tree's own fdt.c reader rather than a new tool -- correct for this exact QEMU version, not assumed stable across others. Bonus finding from the same dump: PPI 26 for the EL2 hypervisor timer, which item 0.7 will need for its EL2 path. Register offsets within each block (GICD_CTLR, GICC_IAR, etc.) are GICv2 architectural constants, not board-specific, and were cross-checked against Linux's own arm-gic.h driver header rather than recalled either. Acceptance amended before implementing (§25.0 "when an item is genuinely wrong"): the original text required observing a delivered-and-acknowledged timer interrupt, which cannot happen within this item's own scope -- apic_timer_start() (item 0.7) is still the no-op stub, so nothing arms the timer. This is the same defect the earlier review's C2 fix already applied to items 0.2 and 0.5; it was missed here. Acceptance is now: GIC initialises without fault, the IAR/EOIR path is wired into aarch64_irq_handler() and ready, boots with no regression -- item 0.7's tick-advance is what proves delivery, exactly as 0.5 already defers to 0.7. EL-aware (B3, same discipline as items 0.4/0.5): apic_init() selects PPI 30 or 26 from aarch64_current_el(), decided once and cached, not re-derived per interrupt. aarch64_irq_handler() now does real work: reads GICC_IAR (the GICv2 acknowledgement step), dispatches to heartbeat_tick() when the INTID matches the timer PPI, and always completes with GICC_EOIR (INTID 1023 = spurious handled per the GICv2 spec, not as a special case of "unrecognised"). This mirrors exactly how riscv64's item 0.2 built full cause-dispatch logic before its timer was armed in 0.3. Investigated and resolved a real scare during verification: QEMU's `-d int` trace showed 1,728 "Taking exception 5 [IRQ]" events by the time boot reached the prompt, which looked exactly like an interrupt storm (hypothesis: EDK2 firmware leaves CNTP_CTL_EL0 enabled with a stale comparator, and enabling the GIC path exposes it before item 0.7 reprograms the timer). A direct one-shot probe inside aarch64_irq_handler() itself -- ground truth for whether this code path runs at all -- fired zero times across a clean, bounded boot. The trace events were almost certainly from EDK2 firmware's own internal timer usage during its own boot phase, before control passes to this kernel; the earlier conclusion was drawn from the external trace alone without checking that distinction, and the probe (not the trace) is what settled it. Probe code fully reverted; not part of the commit. Verified: builds clean, boots to ok> with no regression, dict_hash 0x3d4e1daf289da94f unchanged from the item 0.1-0.5 baseline, EL banner and IDT-installed lines still print in order, GIC init line confirms PPI 30 selected. Only aarch64-scoped files touched; amd64/riscv64 not rebuilt. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
12 KiB
12 KiB
Capsule Block Manifest — Auto-generated
Capsule Summary
| Capsule | Blocks claimed | xxHash64 |
|---|---|---|
ACL.4th |
4000, 4001, 4002, 4003, 4004, 4005, 4006, 4007, 4015 | 0xd781d22148ff171d |
artemis:init.4th |
4110, 4111, 4112, 4113, 4122, 4123, 4124, 4125, 4126, 4127, 4128, 4129, 4130, 4131, 4132, 4133, 4134, 4135, 4136, 4137, 4138, 4139, 4140, 4141, 4160, 4161, 4162, 4163, 4164, 4165, 4166, 4167, 4168, 4169, 4170, 4171, 4172, 4173, 4174, 4851, 4852 | 0xc9e92cd18f4c7b49 |
common:msg.4th |
4055 | 0xa99c5bcd3877f80e |
doe-campaign.4th |
4060, 4061, 4062, 4063, 4064, 4065 | 0x3d4549142d91ec20 |
doe.4th |
2100, 2101, 2102, 2103, 2104, 2105, 2106, 2107 | 0xb6ecf5374e8ee77c |
hermes:init.4th |
4100, 4101, 4102, 4103, 4104, 4105, 4106, 4107, 4108, 4109, 4114, 4115, 4116, 4117, 4118, 4119, 4120, 4121, 4142, 4143, 4144, 4145, 4146, 4147, 4148, 4149, 4150, 4151, 4152, 4153 | 0xbb77f3ac463f507f |
init-0.4th |
2200, 2201 | 0xd0a9550baf786bb3 |
init-1.4th |
4406, 4415, 4425, 4435 | 0x63e251adb0a03613 |
init-2.4th |
4506, 4515, 4525, 4535, 4545 | 0xf113b3d0bcccae47 |
init-3.4th |
4606, 4615, 4625, 4635, 4645, 4655, 4665 | 0x62b7a71576ad1041 |
init-4.4th |
2130, 2131, 2132 | 0x89e3ef1db5ac0627 |
init-5.4th |
(none — raw code capsule) | 0xda0c179af10a46a9 |
init-6.4th |
2080, 2081, 2082, 2083, 2084, 2085, 2086, 2087, 2088, 2089, 2090, 2091, 2092, 2093, 2094, 2095 | 0x06fc0ce1e369ef5a |
init-7.4th |
2150 | 0xb88df2efeb753d64 |
init-8.4th |
2160 | 0x714746312b72f83d |
init-9.4th |
4706, 4715, 4725, 4735, 4745 | 0x3f2bec73142aa424 |
init-l8-diverse.4th |
4820, 4821, 4822 | 0xaa293201a6c91838 |
init-l8-omni.4th |
2064, 2065, 2066, 2067, 2068, 2069, 2070, 2071, 2072, 2073, 2074, 2075, 2076, 2077, 2078, 2079 | 0x5979e314d6452045 |
init-l8-stable.4th |
4806 | 0xdc3830f189063a9a |
init-l8-temporal.4th |
4830, 4831 | 0x51abd4c138246651 |
init-l8-transition.4th |
4840, 4841, 4842 | 0xbcc1a81976f0a4c9 |
init-l8-volatile.4th |
4810, 4811, 4812, 4813 | 0x98caabbbd92abac4 |
init.4th |
2049, 2050, 2057 | 0xb4c4b5559146a3bd |
lib.4th |
4050 | 0x20625ebf1276c239 |
process.4th |
4300, 4301 | 0x781afc1dbd0294f7 |
zuse.4th |
4016, 4017, 4018 | 0x12f38ec782434a77 |
Block Map (sorted by LBN)
| LBN | Capsule | xxHash64 | Status |
|---|---|---|---|
| 2049 | init.4th |
0xb4c4b5559146a3bd |
ok |
| 2050 | init.4th |
0xb4c4b5559146a3bd |
ok |
| 2057 | init.4th |
0xb4c4b5559146a3bd |
ok |
| 2064 | init-l8-omni.4th |
0x5979e314d6452045 |
ok |
| 2065 | init-l8-omni.4th |
0x5979e314d6452045 |
ok |
| 2066 | init-l8-omni.4th |
0x5979e314d6452045 |
ok |
| 2067 | init-l8-omni.4th |
0x5979e314d6452045 |
ok |
| 2068 | init-l8-omni.4th |
0x5979e314d6452045 |
ok |
| 2069 | init-l8-omni.4th |
0x5979e314d6452045 |
ok |
| 2070 | init-l8-omni.4th |
0x5979e314d6452045 |
ok |
| 2071 | init-l8-omni.4th |
0x5979e314d6452045 |
ok |
| 2072 | init-l8-omni.4th |
0x5979e314d6452045 |
ok |
| 2073 | init-l8-omni.4th |
0x5979e314d6452045 |
ok |
| 2074 | init-l8-omni.4th |
0x5979e314d6452045 |
ok |
| 2075 | init-l8-omni.4th |
0x5979e314d6452045 |
ok |
| 2076 | init-l8-omni.4th |
0x5979e314d6452045 |
ok |
| 2077 | init-l8-omni.4th |
0x5979e314d6452045 |
ok |
| 2078 | init-l8-omni.4th |
0x5979e314d6452045 |
ok |
| 2079 | init-l8-omni.4th |
0x5979e314d6452045 |
ok |
| 2080 | init-6.4th |
0x06fc0ce1e369ef5a |
ok |
| 2081 | init-6.4th |
0x06fc0ce1e369ef5a |
ok |
| 2082 | init-6.4th |
0x06fc0ce1e369ef5a |
ok |
| 2083 | init-6.4th |
0x06fc0ce1e369ef5a |
ok |
| 2084 | init-6.4th |
0x06fc0ce1e369ef5a |
ok |
| 2085 | init-6.4th |
0x06fc0ce1e369ef5a |
ok |
| 2086 | init-6.4th |
0x06fc0ce1e369ef5a |
ok |
| 2087 | init-6.4th |
0x06fc0ce1e369ef5a |
ok |
| 2088 | init-6.4th |
0x06fc0ce1e369ef5a |
ok |
| 2089 | init-6.4th |
0x06fc0ce1e369ef5a |
ok |
| 2090 | init-6.4th |
0x06fc0ce1e369ef5a |
ok |
| 2091 | init-6.4th |
0x06fc0ce1e369ef5a |
ok |
| 2092 | init-6.4th |
0x06fc0ce1e369ef5a |
ok |
| 2093 | init-6.4th |
0x06fc0ce1e369ef5a |
ok |
| 2094 | init-6.4th |
0x06fc0ce1e369ef5a |
ok |
| 2095 | init-6.4th |
0x06fc0ce1e369ef5a |
ok |
| 2100 | doe.4th |
0xb6ecf5374e8ee77c |
ok |
| 2101 | doe.4th |
0xb6ecf5374e8ee77c |
ok |
| 2102 | doe.4th |
0xb6ecf5374e8ee77c |
ok |
| 2103 | doe.4th |
0xb6ecf5374e8ee77c |
ok |
| 2104 | doe.4th |
0xb6ecf5374e8ee77c |
ok |
| 2105 | doe.4th |
0xb6ecf5374e8ee77c |
ok |
| 2106 | doe.4th |
0xb6ecf5374e8ee77c |
ok |
| 2107 | doe.4th |
0xb6ecf5374e8ee77c |
ok |
| 2130 | init-4.4th |
0x89e3ef1db5ac0627 |
ok |
| 2131 | init-4.4th |
0x89e3ef1db5ac0627 |
ok |
| 2132 | init-4.4th |
0x89e3ef1db5ac0627 |
ok |
| 2150 | init-7.4th |
0xb88df2efeb753d64 |
ok |
| 2160 | init-8.4th |
0x714746312b72f83d |
ok |
| 2200 | init-0.4th |
0xd0a9550baf786bb3 |
ok |
| 2201 | init-0.4th |
0xd0a9550baf786bb3 |
ok |
| 4000 | ACL.4th |
0xd781d22148ff171d |
ok |
| 4001 | ACL.4th |
0xd781d22148ff171d |
ok |
| 4002 | ACL.4th |
0xd781d22148ff171d |
ok |
| 4003 | ACL.4th |
0xd781d22148ff171d |
ok |
| 4004 | ACL.4th |
0xd781d22148ff171d |
ok |
| 4005 | ACL.4th |
0xd781d22148ff171d |
ok |
| 4006 | ACL.4th |
0xd781d22148ff171d |
ok |
| 4007 | ACL.4th |
0xd781d22148ff171d |
ok |
| 4015 | ACL.4th |
0xd781d22148ff171d |
ok |
| 4016 | zuse.4th |
0x12f38ec782434a77 |
ok |
| 4017 | zuse.4th |
0x12f38ec782434a77 |
ok |
| 4018 | zuse.4th |
0x12f38ec782434a77 |
ok |
| 4050 | lib.4th |
0x20625ebf1276c239 |
ok |
| 4055 | common:msg.4th |
0xa99c5bcd3877f80e |
ok |
| 4060 | doe-campaign.4th |
0x3d4549142d91ec20 |
ok |
| 4061 | doe-campaign.4th |
0x3d4549142d91ec20 |
ok |
| 4062 | doe-campaign.4th |
0x3d4549142d91ec20 |
ok |
| 4063 | doe-campaign.4th |
0x3d4549142d91ec20 |
ok |
| 4064 | doe-campaign.4th |
0x3d4549142d91ec20 |
ok |
| 4065 | doe-campaign.4th |
0x3d4549142d91ec20 |
ok |
| 4100 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4101 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4102 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4103 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4104 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4105 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4106 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4107 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4108 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4109 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4110 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4111 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4112 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4113 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4114 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4115 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4116 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4117 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4118 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4119 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4120 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4121 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4122 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4123 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4124 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4125 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4126 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4127 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4128 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4129 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4130 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4131 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4132 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4133 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4134 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4135 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4136 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4137 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4138 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4139 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4140 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4141 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4142 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4143 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4144 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4145 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4146 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4147 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4148 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4149 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4150 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4151 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4152 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4153 | hermes:init.4th |
0xbb77f3ac463f507f |
ok |
| 4160 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4161 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4162 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4163 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4164 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4165 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4166 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4167 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4168 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4169 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4170 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4171 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4172 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4173 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4174 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4300 | process.4th |
0x781afc1dbd0294f7 |
ok |
| 4301 | process.4th |
0x781afc1dbd0294f7 |
ok |
| 4406 | init-1.4th |
0x63e251adb0a03613 |
ok |
| 4415 | init-1.4th |
0x63e251adb0a03613 |
ok |
| 4425 | init-1.4th |
0x63e251adb0a03613 |
ok |
| 4435 | init-1.4th |
0x63e251adb0a03613 |
ok |
| 4506 | init-2.4th |
0xf113b3d0bcccae47 |
ok |
| 4515 | init-2.4th |
0xf113b3d0bcccae47 |
ok |
| 4525 | init-2.4th |
0xf113b3d0bcccae47 |
ok |
| 4535 | init-2.4th |
0xf113b3d0bcccae47 |
ok |
| 4545 | init-2.4th |
0xf113b3d0bcccae47 |
ok |
| 4606 | init-3.4th |
0x62b7a71576ad1041 |
ok |
| 4615 | init-3.4th |
0x62b7a71576ad1041 |
ok |
| 4625 | init-3.4th |
0x62b7a71576ad1041 |
ok |
| 4635 | init-3.4th |
0x62b7a71576ad1041 |
ok |
| 4645 | init-3.4th |
0x62b7a71576ad1041 |
ok |
| 4655 | init-3.4th |
0x62b7a71576ad1041 |
ok |
| 4665 | init-3.4th |
0x62b7a71576ad1041 |
ok |
| 4706 | init-9.4th |
0x3f2bec73142aa424 |
ok |
| 4715 | init-9.4th |
0x3f2bec73142aa424 |
ok |
| 4725 | init-9.4th |
0x3f2bec73142aa424 |
ok |
| 4735 | init-9.4th |
0x3f2bec73142aa424 |
ok |
| 4745 | init-9.4th |
0x3f2bec73142aa424 |
ok |
| 4806 | init-l8-stable.4th |
0xdc3830f189063a9a |
ok |
| 4810 | init-l8-volatile.4th |
0x98caabbbd92abac4 |
ok |
| 4811 | init-l8-volatile.4th |
0x98caabbbd92abac4 |
ok |
| 4812 | init-l8-volatile.4th |
0x98caabbbd92abac4 |
ok |
| 4813 | init-l8-volatile.4th |
0x98caabbbd92abac4 |
ok |
| 4820 | init-l8-diverse.4th |
0xaa293201a6c91838 |
ok |
| 4821 | init-l8-diverse.4th |
0xaa293201a6c91838 |
ok |
| 4822 | init-l8-diverse.4th |
0xaa293201a6c91838 |
ok |
| 4830 | init-l8-temporal.4th |
0x51abd4c138246651 |
ok |
| 4831 | init-l8-temporal.4th |
0x51abd4c138246651 |
ok |
| 4840 | init-l8-transition.4th |
0xbcc1a81976f0a4c9 |
ok |
| 4841 | init-l8-transition.4th |
0xbcc1a81976f0a4c9 |
ok |
| 4842 | init-l8-transition.4th |
0xbcc1a81976f0a4c9 |
ok |
| 4851 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
| 4852 | artemis:init.4th |
0xc9e92cd18f4c7b49 |
ok |
Conflicts
None.
26 capsule(s) scanned. Re-run mkcapsule --manifest <dir> to refresh.