summaryrefslogtreecommitdiff
path: root/src/arch/x86
diff options
context:
space:
mode:
authorPetr Cvek <petrcvekcz@gmail.com>2019-09-29 01:26:12 +0200
committerPatrick Georgi <pgeorgi@google.com>2019-10-01 15:07:13 +0000
commit5adbc767f66224e617b6c8204a868542b8010999 (patch)
tree90eebdf8b0686462d732b547a69614842d888ed9 /src/arch/x86
parent2647b6f9baffcad8bf52b591b2dc3f40a2ba7243 (diff)
downloadcoreboot-5adbc767f66224e617b6c8204a868542b8010999.tar.xz
mb/kontron/986lcd-m: Add gameport base allocation workaround
A missing definition of gameport base (PNP io 0x60) will cause an automatic address assignment during PCI/PNP enumeration, which won't obey limit 0x7ff. This will cause the enumeration to fail as other devices already have the values enabled. The symptoms are: not working USB, PS/2, garbled UART console, not working PCIe GPUs and crashes. Probably because of wrongly assigned IO ports. Example of log (shortened): Done reading resources. Setting resources... !! Resource didn't fit !! aligned base 1000 size 1000 limit 2e7 1fff needs to be <= 2e7 (limit) PCI: 00:1c.0 1c * [0x0 - 0xfff] io !! Resource didn't fit !! aligned base 1000 size 1000 limit 2e7 1fff needs to be <= 2e7 (limit) PCI: 00:1c.1 1c * [0x1000 - 0x1fff] io !! Resource didn't fit !! aligned base 1000 size 1000 limit 2e7 1fff needs to be <= 2e7 (limit) PCI: 00:1c.2 1c * [0x2000 - 0x2fff] io !! Resource didn't fit !! aligned base 400 size 10 limit 2e7 40f needs to be <= 2e7 (limit) PCI: 00:1f.2 20 * [0x3080 - 0x308f] io !! Resource didn't fit !! ... ERROR: PCI: 00:02.0 14 io size: 0x0000000008 not assigned ... ERROR: PCI: 00:1f.2 10 io size: 0x0000000008 not assigned ERROR: PCI: 00:1f.2 14 io size: 0x0000000004 not assigned ERROR: PCI: 00:1f.2 18 io size: 0x0000000008 not assigned ERROR: PCI: 00:1f.2 1c io size: 0x0000000004 not assigned ERROR: PCI: 00:1f.2 20 io size: 0x0000000010 not assigned ... PCI: 00:1b.0 subsystem <- 8086/27d8 PCI: 00:1b.0 cmd <- 102 PCI: 00:1c.0 bridge ctrl <- 0003 PCI: 00:1c.0 subsystem <- 8086/27d0 PCI: 00:1c.0 cmd <- 107 PCI: 00:1c.1 brids70c01mcu0PeC: 0 dV0i8s0immicrocode: upd10a00000y0025 x666600CPU physiaB 0 0 e k MTRR cheaeu60zeAttemfWaiting for 1st Sot AP: slot 1 apic_L0ecl0zsax a aInitiNntt kac:oIG0 Ua dUrSGSGL Ct0C07fintel_vga_int15_h VGA Option ROM wa7..Azalia0Azalia: codkAbCiPCI: 00:1c.0 init finished We can see the ports probably started to collide after the activation of 00:1c.0 device. A debug run with compiled SPEW shows the problem with enumeration: PCI: 00:1f.1 18 * [0x50b8 - 0x50bf] io PCI: 00:1f.2 10 * [0x50c0 - 0x50c7] io PCI: 00:1f.2 18 * [0x50c8 - 0x50cf] io PCI: 00:1f.1 14 * [0x50d0 - 0x50d3] io PCI: 00:1f.1 1c * [0x50d4 - 0x50d7] io PCI: 00:1f.2 14 * [0x50d8 - 0x50db] io PCI: 00:1f.2 1c * [0x50dc - 0x50df] io PNP: 002e.7 60 * [0x50e0 - 0x50e0] io <-- gameport base DOMAIN: 0000 io: base: 50e1 size: 40e1 align: 12 gran: 0 limit: 7ff done Notice a weird base for DOMAIN, along with the limit. Adding a definition of gameport (0x220) as a workaround fixes the problems. The gameport should be still disabled thanks to disable bits (W83627THF datasheet is little bit chaotic). I didn't find any info if the gameport is available on some pads of the motherboard. Signed-off-by: Petr Cvek <petrcvekcz@gmail.com> Change-Id: Ie8e42552ac5e638e91e5c290655edcce1f64e408 Reviewed-on: https://review.coreboot.org/c/coreboot/+/35671 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Diffstat (limited to 'src/arch/x86')
0 files changed, 0 insertions, 0 deletions