SeaBIOS April 2014

seabios@seabios.org

15 participants
35 discussions

[QEMU v8 PATCH 0/7] SMBIOS: build full tables in QEMU
by Gabriel L. Somlo 23 Apr '14

23 Apr '14

On Wed, Apr 23, 2014 at 12:13:48PM +0200, Gerd Hoffmann wrote: > Series looks good to me. Awesome, thanks! Here's one more iteration, rearranging things to start with the most benign and uncontroversial patches, and progressing toward the "payload" at the end :) > /me wonders though how you've tested the final revision and the compat > stuff. Patch #6 doesn't actually add a new machine type where the > non-legacy mode is active ... Why, by commenting and uncommenting "smbios_legacy_mode = true;" in the *compat_2_0() functions :) I realized I was being silly after sending out the v7 series, and added something more or less similar to what you wrote, and was saving it for v8. I squashed it on top of the compat functions, see patch 2/7. > I'll go wait for a few days for additional feedback, then [...] > send out a pull request. Sounds like a plan! BTW, would it make sense to have Kevin apply this: http://www.seabios.org/pipermail/seabios/2014-April/007856.html to SeaBIOS and then pull a new blob from there around the same time (or before ?) this patch set is applied to QEMU ? Thanks much, Gabriel Gabriel L. Somlo (7): E820: Add interface for accessing e820 table PC: Add machine version 2.1 for piix and q35 SMBIOS: Rename symbols to better reflect future use SMBIOS: Update header file definitions SMBIOS: Use macro to set smbios defaults SMBIOS: Use bitmaps to prevent incompatible comand line options SMBIOS: Build aggregate smbios tables and entry point hw/i386/pc.c | 39 ++- hw/i386/pc_piix.c | 43 ++- hw/i386/pc_q35.c | 37 ++- hw/i386/smbios.c | 789 +++++++++++++++++++++++++++++++++++++++++++---- include/hw/i386/pc.h | 2 + include/hw/i386/smbios.h | 99 ++++-- 6 files changed, 902 insertions(+), 107 deletions(-) -- 1.9.0

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[QEMU v7 PATCH 0/7] SMBIOS: build full tables in QEMU
by Gabriel L. Somlo 23 Apr '14

23 Apr '14

New in version 7 of the patch set: - patch set now down to only 7 patches; - machine versions 2.0 and older currently unaffected by this patch set, will continue using field overrides as before - patches 1..6 are very small and simple, and set the stage for patch #7 - patch 7 introduces the new aggregate-table functionality; it consists mostly of insertions, and should therefore be relatively easy to follow. - "-smbios file=<foo>" functionality happens before we know whether we're in legacy or new/aggregate-table mode, so we insert the file blob(s) into both the legacy and the aggregate tables, and keep the one we need once we know which one that is. For those interested, the code is also structured for easy subsequent removal of the legacy mode, if/when that becomes applicable ;) Thanks again for any feedback and comments (or for just applying the patch) ! Gabriel Gabriel L. Somlo (7): SMBIOS: Rename symbols to better reflect future use SMBIOS: Update header file definitions SMBIOS: Use macro to set smbios defaults SMBIOS: Use bitmaps to prevent incompatible comand line options E820: Add interface for accessing e820 table PC: Add (empty) compat functions for machine version 2.0 SMBIOS: Build aggregate smbios tables and entry point hw/i386/pc.c | 39 ++- hw/i386/pc_piix.c | 29 +- hw/i386/pc_q35.c | 25 +- hw/i386/smbios.c | 789 +++++++++++++++++++++++++++++++++++++++++++---- include/hw/i386/pc.h | 2 + include/hw/i386/smbios.h | 99 ++++-- 6 files changed, 879 insertions(+), 104 deletions(-) -- 1.9.0

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[QEMU v6 PATCH 00/17] SMBIOS: build full tables in QEMU
by Gabriel L. Somlo 22 Apr '14

22 Apr '14

New in version 6 of the patch set: - down to 17 patches (squashed adding spec v2.4 fields in together with adding v2.8 fields further down). - switching to monolithic aggregate tables plus entry point in patch 11/17, right after accomplishing full SeaBIOS compatibility (in 10/17). - Type 0 (bios info) structure continues to be optional. The BIOS is expected to supply its own Type 0 structure unless we force one to be provided via the command line. On Mon, Apr 14, 2014 at 11:14:08AM +0200, Gerd Hoffmann wrote: > I also think we should continue providing the tables one-by-one using > the old interface, at least for a transition period, so older seabios > versions continue to work. Is *this* a hard requirement for merging ? I'm currently brainstorming for ways to do this that won't be horrifyingly ugly, but so far everything I managed to come up with makes me want to scratch my eyes out :) Thanks, Gabriel Gabriel L. Somlo (17): SMBIOS: Rename smbios_set_type1_defaults() for more general use SMBIOS: Use macro to set smbios defaults SMBIOS: Use bitmaps to check for smbios table collisions SMBIOS: Add code to build full smbios tables; build type 2 table SMBIOS: Build full tables for types 0 and 1 SMBIOS: Remove unused code for passing individual fields to bios SMBIOS: Build full type 3 table SMBIOS: Build full type 4 tables SMBIOS: Build full smbios memory tables (type 16, 17, 19, and 20) SMBIOS: Build full tables for type 32 and 127 SMBIOS: Generate aggregate smbios tables, including entry point SMBIOS: Remove SeaBIOS compatibility quirks SMBIOS: Stop including type 20 tables SMBIOS: Use e820 memory map to generate type 19 tables SMBIOS: Update type 3 definition to smbios spec v2.7 SMBIOS: Update type 4 definition to smbios spec v2.6 SMBIOS: Update memory table types (16, 17, and 19) to smbios spec v2.8 hw/i386/pc.c | 35 ++- hw/i386/pc_piix.c | 14 +- hw/i386/pc_q35.c | 10 +- hw/i386/smbios.c | 762 +++++++++++++++++++++++++++++++++++++++-------- include/hw/i386/pc.h | 2 + include/hw/i386/smbios.h | 98 ++++-- 6 files changed, 745 insertions(+), 176 deletions(-) -- 1.9.0

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ASL: Warning 3104 - Reserved method should not return a value ^ (_EJ0)
by Paul Menzel 21 Apr '14

21 Apr '14

Dear SeaBIOS folks, building SeaBIOS from commit 0784d04cb6f6e5c893aaf368091f20326fb847fe Author: Marcel Apfelbaum <marcel.a(a)redhat.com> Date: Thu Apr 10 21:55:22 2014 +0300 hw/pci: check if pci2pci bridges implement optional limit registers with IASL 20140325 (from Debian Sid/unstable) and the attached config, the following warning is shown. Compilation complete. 0 Errors, 0 Warnings, 0 Remarks, 0 Optimizations Compiling IASL out/src/fw/ssdt-pcihp.hex out/src/fw/ssdt-pcihp.dsl.i 30: Return (PCEJ(_SUN)) Warning 3104 - Reserved method should not return a value ^ (_EJ0) Thanks, Paul

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Re: [SeaBIOS] [PATCH] If an int 1587 call is made from an option rom, stay in bigreal mode.
by Paul Menzel 20 Apr '14

20 Apr '14

Am Samstag, den 19.04.2014, 12:30 -0400 schrieb Kevin O'Connor: > Modify the int 1587 handler to check if the POST phase is still > running. If it is, use bigreal mode segment limits so that the caller > remains in bigreal mode when the 1587 handler completes. This helps > with SeaVGABIOS' use of "direct" framebuffer accesses (an option rom > may attempt to display text during its option rom execution which can > cause SeaVGABIOS to make the int 1587 calls). Did you experience this or is that just a precaution? If you did experience this, could you please elaborate what hardware you used and which Option ROMs were executed? […] Thanks, Paul

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[PATCH] If an int 1587 call is made from an option rom, stay in bigreal mode.
by Kevin O'Connor 19 Apr '14

19 Apr '14

Modify the int 1587 handler to check if the POST phase is still running. If it is, use bigreal mode segment limits so that the caller remains in bigreal mode when the 1587 handler completes. This helps with SeaVGABIOS' use of "direct" framebuffer accesses (an option rom may attempt to display text during its option rom execution which can cause SeaVGABIOS to make the int 1587 calls). Signed-off-by: Kevin O'Connor <kevin(a)koconnor.net> --- src/misc.c | 9 +++++++++ src/post.c | 2 ++ src/resume.c | 3 --- src/system.c | 9 +++++---- src/util.h | 1 + 5 files changed, 17 insertions(+), 7 deletions(-) diff --git a/src/misc.c b/src/misc.c index 191e707..6712355 100644 --- a/src/misc.c +++ b/src/misc.c @@ -14,6 +14,15 @@ #define PORT_MATH_CLEAR 0x00f0 +// Indicator if POST phase has been started (and if it has completed). +int HaveRunPost VARFSEG; + +int +in_post(void) +{ + return GET_GLOBAL(HaveRunPost) == 1; +} + /**************************************************************** * Misc 16bit ISRs diff --git a/src/post.c b/src/post.c index 5fc1968..0d9e66f 100644 --- a/src/post.c +++ b/src/post.c @@ -185,6 +185,8 @@ prepareboot(void) malloc_prepboot(); memmap_prepboot(); + HaveRunPost = 2; + // Setup bios checksum. BiosChecksum -= checksum((u8*)BUILD_BIOS_ADDR, BUILD_BIOS_SIZE); } diff --git a/src/resume.c b/src/resume.c index e2ceef1..1903174 100644 --- a/src/resume.c +++ b/src/resume.c @@ -17,9 +17,6 @@ #include "string.h" // memset #include "util.h" // dma_setup -// Indicator if POST phase has been run. -int HaveRunPost VARFSEG; - // Handler for post calls that look like a resume. void VISIBLE16 handle_resume(void) diff --git a/src/system.c b/src/system.c index 5d10cc8..3cb2228 100644 --- a/src/system.c +++ b/src/system.c @@ -115,12 +115,13 @@ handle_1587(struct bregs *regs) SET_FARVAR(gdt_seg, gdt_far[1], GDT_DATA | GDT_LIMIT((6*sizeof(u64))-1) | GDT_BASE(loc)); // Initialize CS descriptor - SET_FARVAR(gdt_seg, gdt_far[4], GDT_CODE | GDT_LIMIT(BUILD_BIOS_SIZE-1) - | GDT_BASE(BUILD_BIOS_ADDR)); + u64 lim = GDT_LIMIT(0x0ffff); + if (in_post()) + lim = GDT_GRANLIMIT(0xffffffff); + SET_FARVAR(gdt_seg, gdt_far[4], GDT_CODE | lim | GDT_BASE(BUILD_BIOS_ADDR)); // Initialize SS descriptor loc = (u32)MAKE_FLATPTR(GET_SEG(SS), 0); - SET_FARVAR(gdt_seg, gdt_far[5], GDT_DATA | GDT_LIMIT(0x0ffff) - | GDT_BASE(loc)); + SET_FARVAR(gdt_seg, gdt_far[5], GDT_DATA | lim | GDT_BASE(loc)); u16 count = regs->cx; asm volatile( diff --git a/src/util.h b/src/util.h index 4f242bf..438adac 100644 --- a/src/util.h +++ b/src/util.h @@ -177,6 +177,7 @@ void process_key(u8 key); // misc.c extern struct bios_config_table_s BIOS_CONFIG_TABLE __aligned(1); extern u8 BiosChecksum; +int in_post(void); void mathcp_setup(void); // mouse.c -- 1.9.0

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Re: [SeaBIOS] [PATCH] Factor out smbios table walking from display_uuid to smbios_next().
by Kevin O'Connor 16 Apr '14

16 Apr '14

On Sat, Apr 12, 2014 at 12:00:50PM -0400, Kevin O'Connor wrote: > Signed-off-by: Kevin O'Connor <kevin(a)koconnor.net> FYI, I have committed this patch. -Kevin

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[Qemu-devel] [PATCH V6 0/2] hw/pci: reserve IO and mem for pci-2-pci bridges with no devices attached
by Marcel Apfelbaum 16 Apr '14

16 Apr '14

v5 -> v6: - Minor, fixed a typo in the subject v4 -> v5 - Addressed Michael S. Tsirkin's comments (patch 2/2): - Open-coded pci_config_is_reserved() method. v3 -> v4: - Addressed Kevin O'Connor's comments: - Refactored a for loop in patch 1/2. - Addressed Michael S. Tsirkin's comments (patch 2/2): - Removed not needed method - Test only base registers (dropped limits tests) - Renamed a helper method - Used 0xFF to test if the memory is reserved - Simplified code in pci_bridge_has_region - I did keep the code that restores base's address as I don't want to modify the registers in a 'query' method. (as replied on the mail thread) v2 -> v3: - Addressed Michael S. Tsirkin's comments: - I/O and Prefetchable Memory are optional. Do not allocate ranges if they are not implemented (2/2). - Note that 2/2 patch can be seen as a separate fix. However, it is related to ranges reservation. v1 -> v2: - Thanks Gerd Hoffmann for the review. - Addressed Michael S. Tsirkin's comments: - Limit capabilities query to 256 iterations, to make sure we don't get into an infinite loop with a broken device. If a pci-2-pci bridge supports hot-plug functionality but there are no devices connected to it, reserve IO/mem in order to be able to attach devices later. Do not waste space, use minimum allowed. Marcel Apfelbaum (2): hw/pci: reserve IO and mem for pci-2-pci bridges with no devices attached hw/pci: check if pci2pci bridges implement optional limit registers src/fw/pciinit.c | 12 +++++------- src/hw/pci.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ src/hw/pci.h | 10 ++++++++++ 3 files changed, 60 insertions(+), 7 deletions(-) -- 1.8.3.1

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Re: [SeaBIOS] [PATCH v2] ld: don't hardcode "-melf_i386"
by Idwer Vollering 16 Apr '14

16 Apr '14

2014-04-16 14:38 GMT+02:00 Idwer Vollering <vidwer(a)gmail.com>: > 2014-04-16 9:14 GMT+02:00 Roger Pau Monne <roger.pau(a)citrix.com>: >> On FreeBSD, the name of the emulation is "-melf_i386_fbsd", so allow >> SeaBIOS to fetch the emulation to use from the environment variables. >> >> This allows SeaBIOS to compile on FreeBSD with gcc. > >> +LD32BIT_FLAG:=-melf_i386 > > That will not work, see below for proof. > > With your patch applied, on FreeBSD 10.0-RELEASE and gcc 4.7.3 > installed from ports: > >> Building ld scripts >> ./scripts/buildversion.sh out/version.c >> Version: rel-1.7.4-86-g028f348-dirty-20140416_140430-machete >> gcc -Iout/ -Isrc -Os -MD -g -Wall -Wno-strict-aliasing -Wold-style-definition -Wtype-limits -m32 -march=i386 -mregparm=3 -mpreferred-stack-boundary=2 -minline-all-stringops -freg-struct-return -ffreestanding -fno-delete-null-pointer-checks -ffunction-sections -fdata-sections -fno-common -fno-stack-protector -DMODE16=0 -DMODESEGMENT=0 -fomit-frame-pointer -c out/version.c -o out/version.o >> ld -melf_i386 -r out/ccode32flat.o out/version.o -o out/code32flat.o >> ld: unrecognised emulation mode: elf_i386 >> Supported emulations: elf_x86_64_fbsd elf_i386_fbsd >> gmake: *** [out/romlayout16.lds] Error 1 > > With 'LD32BIT_FLAG:=-melf_i386_fbsd': > >> Building ld scripts >> ./scripts/buildversion.sh out/version.c >> Version: rel-1.7.4-86-g028f348-dirty-20140416_140652-machete >> gcc -Iout/ -Isrc -Os -MD -g -Wall -Wno-strict-aliasing -Wold-style-definition -Wtype-limits -m32 -march=i386 -mregparm=3 -mpreferred-stack-boundary=2 -minline-all-stringops -freg-struct-return -ffreestanding -fno-delete-null-pointer-checks -ffunction-sections -fdata-sections -fno-common -fno-stack-protector -DMODE16=0 -DMODESEGMENT=0 -fomit-frame-pointer -c out/version.c -o out/version.o >> ld -melf_i386_fbsd -r out/ccode32flat.o out/version.o -o out/code32flat.o >> ld -melf_i386_fbsd -r out/ccode16.o out/romlayout.o -o out/code16.o > > And: > >> $ gcc47 -dumpspecs | grep elf_i386 >> %{!static:--eh-frame-hdr} %{m32:-m elf_i386_fbsd} %{p:%nconsider using '-pg' instead of '-p' with gprof(1)} %{v:-V} %{assert*} %{R*} %{rpath*} %{defsym*} %{shared:-Bshareable %{h*} %{soname*}} %{!shared: %{!static: %{rdynamic:-export-dynamic} -dynamic-linker %(fbsd_dynamic_linker) } %{static:-Bstatic}} %{symbolic:-Bsymbolic} False alarm, I had to override the linker with LD=/usr/local/bin/ld.

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Re: [SeaBIOS] [PATCH] ld: don't hardcode "-melf_i386"
by Roger Pau Monné 15 Apr '14

15 Apr '14

On 15/04/14 19:57, Idwer Vollering wrote: > 2014-04-15 19:22 GMT+02:00 Roger Pau Monne <roger.pau(a)citrix.com>: >> On FreeBSD, the name of the emulation is "-melf_i386_fbsd", so allow >> SeaBIOS to fetch the emulation to use from the environment variables. >> >> This allows SeaBIOS to compile on FreeBSD with gcc. > > What about clang? On FreeBSD >= 10 you need gcc from ports. Well, as stated on the commit message, this only fixes the linker issue, it still requires gcc. I will certainly look into getting it compiled with clang, but it is not a priority for me right now. Roger.

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SeaBIOS April 2014