On Do, 2015-05-28 at 16:14 +0000, Ma, Maurice wrote: > Hi, Gerb, > > The current UEFI payload can support 16550 UART compatible UART only. > > The serial port I/O base and type (I/O or MMIO) are passed from coreboot to > the UEFI payload.
So I probably need serial console support in coreboot to get this going. Ah, yes. Now I at least get some output: $ qemu-system-x86_64 \ -bios /usr/share/coreboot.git/coreboot-i440fx-tianocore.rom \ -serial stdio [ ... ] Loading driver at 0x0000774A000 EntryPoint=0x0000774A2AF CpuDxe.efi InstallProtocolInterface: BC62157E-3E33-4FEC-9920-2D3B36D750DF 7788B18 PROGRESS CODE: V03040002 I0 InstallProtocolInterface: 26BACCB1-6F42-11D4-BCE7-0080C73C8881 77593A0 !!!! X64 Exception Type - 0000000000000000 CPU Apic ID - 00000000 !!!! RIP - 000000000774FD1C, CS - 0000000000000028, RFLAGS - 0000000000000202 RAX - 000000000774FD16, RCX - 00000000077593A0, RDX - 00000000077593A0 RBX - 0000000007F5A260, RSP - 0000000007F59618, RBP - 0000000007F59640 RSI - 0000000000000007, RDI - 0000000000000001 R8 - 0000000000000000, R9 - 00000000077889D8, R10 - 00000000000000C7 R11 - 000000000000003C, R12 - 0000000000000000, R13 - 0000000000000000 R14 - 0000000000000000, R15 - 0000000000000000 DS - 0000000000000008, ES - 0000000000000008, FS - 0000000000000008 GS - 0000000000000008, SS - 0000000000000008 CR0 - 0000000080000011, CR2 - 0000000000000000, CR3 - 0000000007B37000 CR4 - 0000000000000228, CR8 - 0000000000000000 DR0 - 0000000000000000, DR1 - 0000000000000000, DR2 - 0000000000000000 DR3 - 0000000000000000, DR6 - 00000000FFFF0FF0, DR7 - 0000000000000400 GDTR - 0000000007B24DD8 000000000000003F, LDTR - 0000000000000000 IDTR - 000000000778B018 0000000000000FFF, TR - 0000000000000000 FXSAVE_STATE - 0000000007F59270 !!!! Find PE image /var/lib/jenkins/jobs/edk2/workspace/rpmbuild/rpm/BUILD/edk2.git/Build/CorebootPayloadPkgX64/DEBUG_GCC48/X64/UefiCpuPkg/CpuDxe/CpuDxe/DEBUG/CpuDxe.dll (ImageBase=000000000774A000, EntryPoint=000000000774A2AF) !!!! [ ... hangs here ... ] Any idea what this could be? Note that on qemu the coreboot hardware initialization is alot simpler than on real hardware, so it could simply be that CorebootPkg expects some information from coreboot which simply isn't there in the qemu case. Given that CorebootPkg seems to crash in cpu initialization you might want to have a look at the very simple coreboot cpu driver for qemu, in src/cpu/qemu-x86/ cheers, Gerd ------------------------------------------------------------------------------ _______________________________________________ edk2-devel mailing list edk2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/edk2-devel
