SeaBIOS January 2013

seabios@seabios.org

27 participants
47 discussions

Re: [SeaBIOS] [Qemu-devel] [RFC PATCH v4 00/30] ACPI memory hotplug
by Andreas Färber 27 Mar '13

27 Mar '13

Am 18.12.2012 13:41, schrieb Vasilis Liaskovitis: > Because dimm layout needs to be configured on machine-boot, all dimm devices > need to be specified on startup command line (either with populated=on or with > populated=off). The dimm information is stored in dimm configuration structures. > > After machine startup, dimms are hot-added or removed with normal device_add > and device_del operations e.g.: > Hot-add syntax: "device_add dimm,id=mydimm0,bus=membus.0" > Hot-remove syntax: "device_del dimm,id=mydimm0" This sounds contradictory: Either all devices need to be specified on the command line, or they can be hot-added via monitor. Assuming a fixed layout at startup, I wonder if there is another clever way to model this... For CPU hotplug Anthony had suggested to have a fixed set of link<Socket> properties that get set to a CPU socket as needed. Might a similar strategy work for memory, i.e. a startup-configured amount of link<DIMM>s on /machine/dimm[n] that point to a QOM DIMM object or NULL if unpopulated? Hot(un)plug would then simply work via QMP qom-set command. (CC'ing some people) Regards, Andreas -- SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg

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[Qemu PATCH] add a boot option to do strict boot
by Amos Kong 04 Mar '13

04 Mar '13

Current seabios will try to boot from selected devices first, if they are all failed, seabios will also try to boot from un-selected devices. We need to make it configurable. I already posted a seabios patch to add a new device type to halt booting. Qemu can add "HALT" at the end of bootindex string, then seabios will halt booting after trying to boot from selected devices. This option only effects when boot priority is changed by bootindex options, the old style(-boot order=..) will still try to boot from un-selected devices. Signed-off-by: Amos Kong <akong(a)redhat.com> --- [SeaBIOS PATCH v3] boot: add a new type to halt booting https://github.com/kongove/seabios/commit/39aeded2da6254eab2c34de92371ce1ca… bios.bin: http://kongove.fedorapeople.org/pub/added-halt-type-bios.bin --- qemu-config.c | 3 +++ qemu-options.hx | 8 ++++++-- vl.c | 28 +++++++++++++++++++++++++++- 3 files changed, 36 insertions(+), 3 deletions(-) diff --git a/qemu-config.c b/qemu-config.c index 2188c3e..dd6d249 100644 --- a/qemu-config.c +++ b/qemu-config.c @@ -612,6 +612,9 @@ QemuOptsList qemu_boot_opts = { }, { .name = "reboot-timeout", .type = QEMU_OPT_STRING, + }, { + .name = "strict", + .type = QEMU_OPT_STRING, }, { /*End of list */ } }, diff --git a/qemu-options.hx b/qemu-options.hx index 9df0cde..5408837 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -376,14 +376,14 @@ ETEXI DEF("boot", HAS_ARG, QEMU_OPTION_boot, "-boot [order=drives][,once=drives][,menu=on|off]\n" - " [,splash=sp_name][,splash-time=sp_time][,reboot-timeout=rb_time]\n" + " [,splash=sp_name][,splash-time=sp_time][,reboot-timeout=rb_time][,strict=on|off]\n" " 'drives': floppy (a), hard disk (c), CD-ROM (d), network (n)\n" " 'sp_name': the file's name that would be passed to bios as logo picture, if menu=on\n" " 'sp_time': the period that splash picture last if menu=on, unit is ms\n" " 'rb_timeout': the timeout before guest reboot when boot failed, unit is ms\n", QEMU_ARCH_ALL) STEXI -@item -boot [order=@var{drives}][,once=@var{drives}][,menu=on|off][,splash=@var{sp_name}][,splash-time=@var{sp_time}][,reboot-timeout=@var{rb_timeout}] +@item -boot [order=@var{drives}][,once=@var{drives}][,menu=on|off][,splash=@var{sp_name}][,splash-time=@var{sp_time}][,reboot-timeout=@var{rb_timeout}][,strict=on|off] @findex -boot Specify boot order @var{drives} as a string of drive letters. Valid drive letters depend on the target achitecture. The x86 PC uses: a, b @@ -407,6 +407,10 @@ when boot failed, then reboot. If @var{rb_timeout} is '-1', guest will not reboot, qemu passes '-1' to bios by default. Currently Seabios for X86 system support it. +Do strict boot via @option{strict=on} as far as firmware/BIOS +supports it. This only effects when boot priority is changed by +bootindex options. The default is non-strict boot. + @example # try to boot from network first, then from hard disk qemu-system-i386 -boot order=nc diff --git a/vl.c b/vl.c index 79e5122..de79f6c 100644 --- a/vl.c +++ b/vl.c @@ -230,6 +230,7 @@ int ctrl_grab = 0; unsigned int nb_prom_envs = 0; const char *prom_envs[MAX_PROM_ENVS]; int boot_menu; +int boot_strict; uint8_t *boot_splash_filedata; int boot_splash_filedata_size; uint8_t qemu_extra_params_fw[2]; @@ -2804,7 +2805,7 @@ int main(int argc, char **argv, char **envp) static const char * const params[] = { "order", "once", "menu", "splash", "splash-time", - "reboot-timeout", NULL + "reboot-timeout", "strict", NULL }; char buf[sizeof(boot_devices)]; char *standard_boot_devices; @@ -2847,6 +2848,19 @@ int main(int argc, char **argv, char **envp) exit(1); } } + if (get_param_value(buf, sizeof(buf), + "strict", optarg)) { + if (!strcmp(buf, "on")) { + boot_strict = 1; + } else if (!strcmp(buf, "off")) { + boot_strict = 0; + } else { + fprintf(stderr, + "qemu: invalid option value '%s'\n", + buf); + exit(1); + } + } qemu_opts_parse(qemu_find_opts("boot-opts"), optarg, 0); } @@ -3907,6 +3921,18 @@ int main(int argc, char **argv, char **envp) net_check_clients(); + if (boot_strict) { + /* do strict boot, only boot from selected devices */ + FWBootEntry *node; + + QTAILQ_FOREACH(node, &fw_boot_order, link) { + if (!node->link.tqe_next) { + add_boot_device_path(node->bootindex + 1, NULL, "HALT"); + break; + } + } + } + /* just use the first displaystate for the moment */ ds = get_displaystate(); -- 1.7.1

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[PATCH 00/13] SeaBIOS as Compatibility Support Module for UEFI/OVMF
by David Woodhouse 05 Feb '13

05 Feb '13

This patch series adds support for using SeaBIOS as a Compatibility Support Module (CSM) to provide "Legacy" BIOS services under UEFI/OVMF. With a version of OVMF suitably patched to stop it from marking our stack in the 0xE0000 segment as read-only (see README.CSM), it has been tested with various Linux systems, Windows 7, OpenBSD 5.2, FreeBSD 8/9, NetBSD, DragonflyBSD, Solaris 10/11. It also fixes issues with Windows 2008r2 which rather stupidly invokes INT 10h for video setup even when booted in EFI mode! I haven't quite finished going through the corporate bureaucracy for releasing this, so it's for review only. Git tree at git://git.infradead.org/users/dwmw2/seabios.git or gitweb at http://git.infradead.org/users/dwmw2/seabios.git -- David Woodhouse Open Source Technology Centre David.Woodhouse(a)intel.com Intel Corporation

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Re: [SeaBIOS] [PATCH 05/13] Add macros for pushing and popping struct bregs
by David Woodhouse 31 Jan '13

31 Jan '13

On Wed, 2013-01-30 at 22:13 -0500, Kevin OConnor wrote: > This bothers me a little as well. Would it be possible to > separate out the UMBStart/End stuff into a separate patch. (The > main patch would assume OVMF doesn't lock 0xc0000-0xfffff at all, > and the UMBStart/End patch would assume that OVMF has your > proposed extensions.) I've done that and pushed it to the git tree. Although the latest version actually works fine anyway, as long as OVMF has the simple one-line to avoid locking the range. The extra fields in the table don't bother it at all since the table has a TableLength field and the checksum is calculated over that. So they're just ignored. -- dwmw2

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Re: [SeaBIOS] [PATCH 05/13] Add macros for pushing and popping struct bregs
by David Woodhouse 31 Jan '13

31 Jan '13

On Wed, 2013-01-30 at 09:58 -0700, Marc Jones wrote: > > > Not-yet-signed-off-by: David Woodhouse <David.Woodhouse(a)intel.com> > would-be-acked-by: Marc Jones <marc.jones(a)se-eng.com> Thanks. I've updated the git tree at git://, http://git.infradead.org/users/dwmw2/seabios.git accordingly. The 'not yet' bit has been revoked, btw. The bureaucracy is done and it's ready for merging once it's passed review. The main thing that bothers me is the UMBStart,UMBEnd fields and corresponding patch to OVMF; we haven't finalised that side of it yet but we certainly *need* it. -- David Woodhouse Open Source Technology Centre David.Woodhouse(a)intel.com Intel Corporation

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[PATCH] Reject non-compliant PCI option ROMs
by David Woodhouse 29 Jan '13

29 Jan '13

cf. http://lists.gnu.org/archive/html/qemu-devel/2013-01/msg03650.html Signed-off-by: David Woodhouse <David.Woodhouse(a)intel.com> diff --git a/src/Kconfig b/src/Kconfig index f35b0f5..e49dd82 100644 --- a/src/Kconfig +++ b/src/Kconfig @@ -293,6 +293,13 @@ menu "BIOS interfaces" default y help Support finding and running option roms during POST. + config PERMIT_UNALIGNED_PCIROM + bool "Allow broken PCI option ROMs with unaligned PCIR table" + default n + help + Support initialising PCI ROMs which violate the spec by having + their PCI information at an unaligned offset, and which may not + be accepted by other firmwares. config OPTIONROMS_DEPLOYED depends on OPTIONROMS bool "Option roms are already at 0xc0000-0xf0000" diff --git a/src/optionroms.c b/src/optionroms.c index c9e7d7b..99c4135 100644 --- a/src/optionroms.c +++ b/src/optionroms.c @@ -107,6 +107,8 @@ static struct pci_data * get_pci_rom(struct rom_header *rom) { struct pci_data *pd = (void*)((u32)rom + rom->pcioffset); + if ((rom->pcioffset & 3) && !CONFIG_PERMIT_UNALIGNED_PCIROM) + return NULL; if (pd->signature != PCI_ROM_SIGNATURE) return NULL; return pd; -- dwmw2

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[PATCH] Reformat .lst in case it is generated by new iasl.
by Bo Yang 26 Jan '13

26 Jan '13

New iasl generate .lst as 'number: ' instead of 'number....', then acpi_extrace.py fails to extract any useful information, building fails. Signed-off-by: Bo Yang <boyang(a)suse.com> --- Makefile | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/Makefile b/Makefile index f28d86c..e87210b 100644 --- a/Makefile +++ b/Makefile @@ -217,6 +217,7 @@ $(OUT)%.hex: src/%.dsl ./tools/acpi_extract_preprocess.py ./tools/acpi_extract.p $(Q)cpp -P $< > $(OUT)$*.dsl.i.orig $(Q)$(PYTHON) ./tools/acpi_extract_preprocess.py $(OUT)$*.dsl.i.orig > $(OUT)$*.dsl.i $(Q)$(IASL) $(call iasl-option,$(IASL),-Pn,) -vs -l -tc -p $(OUT)$* $(OUT)$*.dsl.i + $(Q)sed -i 's/^$ *[0-9A-Fa-f]\+$: /\1..../' $(OUT)$*.lst $(Q)$(PYTHON) ./tools/acpi_extract.py $(OUT)$*.lst > $(OUT)$*.off $(Q)cat $(OUT)$*.off > $@ -- 1.6.0.2

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[PATCH] Reformat .lst in case it is generated by new iasl.
by Bo Yang 24 Jan '13

24 Jan '13

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SeaBIOS CSM status
by David Woodhouse 24 Jan '13

24 Jan '13

Just a brief update for those who are interested... the CSM is fairly functional now. I've tested with: Various Linuxes including CentOS [56], Fedora 17. Windows 7 Windows 2008r2 (via EFI) OpenBSD 5.2 FreeBSD 9 FreeBSD 8 Debian/kFreeBSD (also FBSD 8 kernel I think) DragonflyBSD NetBSD Solaris 10 Solaris 11 OpenIndiana FreeDOS I think everything is working except a few problems with the ACPI tables that OVMF produces. OpenBSD crashes in its AML interpreter unless I revert OVMF commit r14403. FreeBSD 9 crashes when assigning PCI interrupts: pcib0: allocated type 3 (0x82000000-0x8201ffff) for rid 10 of pci0:0:3:0 map[14]: type I/O Port, range 32, base 0xc000, size 6, enabled pcib0: allocated type 4 (0xc000-0xc03f) for rid 14 of pci0:0:3:0 pcib0: matched entry for 0.3.INTA (src \_SB_.PCI0.LPC_.LNKC:0) ... and then it just sits there. If I boot with a normal SeaBIOS, it looks like this: pcib0: allocated type 3 (0xfeba0000-0xfebbffff) for rid 10 of pci0:0:3:0 map[14]: type I/O Port, range 32, base 0xc000, size 6, enabled pcib0: allocated type 4 (0xc000-0xc03f) for rid 14 of pci0:0:3:0 pcib0: matched entry for 0.3.INTA (src \_SB_.LNKC:0) pcib0: slot 3 INTA routed to irq 11 via \_SB_.LNKC isab0: <PCI-ISA bridge> at device 1.0 on pci0 isa0: <ISA bus> on isab0 ... and continues happily. FreeBSD 8 (and Debian/kFreeBSD) seem to work but keep complaining of a storm of IRQ9, which is the ACPI interrupt. At this point, I'm fairly much prepared to declare that all of those are Not My Fault™ and that the CSM is basically working. I'm probably going to look at NV variable storage for OVMF next, using qemu's fw_cfg (which *is* writeable) directly instead of the evil thing it does now with storing a file on the EFI partition. And also fix up the device detection on the OVMF side, and fix the fact that OVMF won't even *ask* the CSM to boot from a virtio or SCSI disk if they exist. -- dwmw2

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Problems booting FreeBSD9 under SeaBIOS as CSM
by David Woodhouse 23 Jan '13

23 Jan '13

I'm probably going to have to chase this one down for myself, but before I do I figured I'd ask if anyone's seen anything similar before, and can give me some pointers... When booting FreeBSD 9 under real SeaBIOS, it all works fine. When SeaBIOS is invoked for a 'legacy' boot under EFI, the FreeBSD bootloader gets as far as displaying its main screen with the FreeBSD banner and the ASCII-art dæmon and the options, but then seems to *stop* before displaying the 'Autoboot in 9 seconds. Press [Space] to pause' message. The qemu log shows that it's in an endless stream of Servicing hardware INT=0x20 44024: v=20 cr0=00000032 e=0000 i=0 cpl=0 IP=f000:000000000000ffec pc=00000000000fffec SP=0000:0000000000005d9c EAX=0000000000000000 EAX=00000000 EBX=00005dd0 ECX=0000ffea EDX=00000000 ESI=0000c350 EDI=00000000 EBP=00000000 ESP=00005d9c EIP=0000ffec EFL=00000202 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =d500 000d5000 ffffffff 00cf9300 CS =f000 000f0000 0000ffff 00009a00 SS =0000 00000000 ffffffff 00cf9300 DS =0000 00000000 ffffffff 00cf9300 FS =0000 00000000 ffffffff 00cff300 GS =0000 00000000 ffffffff 00cff300 LDT=0000 00000000 0000ffff 00008200 TR =0038 00005f98 00002067 00008900 GDT= 00009590 0000003f IDT= 00000000 000003ff CR0=00000032 CR2=00000000 CR3=7fb36000 CR4=00000648 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 CCS=00000044 CCD=00000000 CCO=EFLAGS EFER=0000000000000000 44025: v=1c cr0=00000032 e=0000 i=1 cpl=0 IP=f000:000000000000f856 pc=00000000000ff856 SP=0000:0000000000005d72 EAX=0000000000000000 EAX=00000000 EBX=00000000 ECX=00000000 EDX=00000000 ESI=00000000 EDI=00000000 EBP=00000000 ESP=00005d72 EIP=0000f856 EFL=00000202 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0 ES =0000 00000000 ffffffff 00cf9300 CS =f000 000f0000 0000ffff 00009a00 SS =0000 00000000 ffffffff 00cf9300 DS =0000 00000000 ffffffff 00cf9300 FS =0000 00000000 ffffffff 00cff300 GS =0000 00000000 ffffffff 00cff300 LDT=0000 00000000 0000ffff 00008200 TR =0038 00005f98 00002067 00008900 GDT= 00009590 0000003f IDT= 00000000 000003ff CR0=00000032 CR2=00000000 CR3=7fb36000 CR4=00000648 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 CCS=00000000 CCD=00000000 CCO=EFLAGS EFER=0000000000000000 Servicing hardware INT=0x20 -- dwmw2

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SeaBIOS January 2013