SeaBIOS May 2021

seabios@seabios.org

13 participants
18 discussions

[PATCH v3 0/4] nvme: Add PRP List support

by Alexander Graf

While looking at VM bootup times, we stumbled over the fact that the NVMe code only does I/O operations of up to 4kb at a given point in time. This is usually ok, but if you have an OS that loads a lot of data on boot in combination to network backed storage, it shows in bootup times. There is no need to restrict ourselves to 4kb though. The INT13 call we receive gives us much larger chunks which we can just map into a native bigger NVMe I/O call if the request buffer is page aligned. This patch implements all logic required to do the above and gives a substantial performance boost on boot. v1 -> v2: - fix dprintf - Fix bounds check on PRP list add logic - Reduce PRP list to 15 entries embedded in the ns struct. This reduces BIOS reserved memory footprint by 4kb. v2 -> v3: - new patch: nvme: Split requests by maximum allowed size - Adjust the maximum request size to sector units. The hardware field describes it in pages. Alexander Graf (4): nvme: Record maximum allowed request size nvme: Allow to set PRP2 nvme: Pass large I/O requests as PRP lists nvme: Split requests by maximum allowed size src/hw/nvme-int.h | 16 ++++++- src/hw/nvme.c | 122 +++++++++++++++++++++++++++++++++++++++++++++++------- 2 files changed, 121 insertions(+), 17 deletions(-) -- 2.16.4 Amazon Development Center Germany GmbH Krausenstr. 38 10117 Berlin Geschaeftsfuehrung: Christian Schlaeger, Jonathan Weiss Eingetragen am Amtsgericht Charlottenburg unter HRB 149173 B Sitz: Berlin Ust-ID: DE 289 237 879

1 day, 6 hours

[PATCH 00/19] Support SMBIOS 3.0 entry points

by Eduardo Habkost

This series implements support for SMBIOS 3.0 entry points in SeaBIOS. The main advantage of SMBIOS 3.0 entry points is the higher limit for total table size. The SMBIOS 2.1 64435 bytes limit can be easily hit in QEMU if creating virtual machines with more than 720 VCPUs. Eduardo Habkost (19): biostables: copy_fseg_table() function util.h: Delete unused get_smbios_entry_point() prototype smbios: Rename code specific for SMBIOS 2.1 entry points smbios: Generic smbios_next() function smbios: smbios_get_tables() function smbios: Use smbios_get_tables()/smbios_next() at display_uuid() smbios: smbios_major_version()/smbios_minor_version() helpers tpm: Use smbios_get_tables() csm: Don't check SMBios21Addr before calling copy_smbios_21() smbios: Make SMBios21Addr variable static smbios: Use smbios_next() at smbios_romfile_setup() smbios: Extract SMBIOS table building code to separate function smbios: Make smbios_build_tables() more generic smbios: smbios_21_setup_entry_point() function smbios: Make some smbios_build_tables() arguments optional smbios: Make smbios_build_tables() ready for 64-bit tables smbios: copy_smbios_30() function smbios: Support SMBIOS 3.0 entry point at copy_table() smbios: Support SMBIOS 3.0 entry point at smbios_romfile_setup() src/std/smbios.h | 17 ++- src/util.h | 5 +- src/fw/biostables.c | 259 +++++++++++++++++++++++++++++++++----------- src/fw/csm.c | 6 +- src/fw/smbios.c | 12 +- src/tcgbios.c | 12 +- 6 files changed, 227 insertions(+), 84 deletions(-) -- 2.28.0

1 month

[PATCH] vgasrc/svgamodes: added 4k resolution

by vitaly＠cyberhaven.com

From: Vitaly Chipounov <vitaly(a)cyberhaven.com> This requires at least 32MB of video memory. Tested with Windows 10's default display driver and virtio-vga. Signed-off-by: Vitaly Chipounov <vitaly(a)cyberhaven.com> --- vgasrc/bochsvga.h | 4 ++-- vgasrc/svgamodes.c | 1 + 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/vgasrc/bochsvga.h b/vgasrc/bochsvga.h index ae5f75d..f08219f 100644 --- a/vgasrc/bochsvga.h +++ b/vgasrc/bochsvga.h @@ -6,8 +6,8 @@ #define VBE_DISPI_BANK_ADDRESS 0xA0000 #define VBE_DISPI_BANK_SIZE_KB 64 -#define VBE_DISPI_MAX_XRES 2560 -#define VBE_DISPI_MAX_YRES 1600 +#define VBE_DISPI_MAX_XRES 3840 +#define VBE_DISPI_MAX_YRES 2160 #define VBE_DISPI_IOPORT_INDEX 0x01CE #define VBE_DISPI_IOPORT_DATA 0x01CF diff --git a/vgasrc/svgamodes.c b/vgasrc/svgamodes.c index 6e494c7..63ef040 100644 --- a/vgasrc/svgamodes.c +++ b/vgasrc/svgamodes.c @@ -92,5 +92,6 @@ struct generic_svga_mode svga_modes[] VAR16 = { { 0x196, { MM_DIRECT, 2560, 1440, 16, 8, 16, SEG_GRAPH } }, { 0x197, { MM_DIRECT, 2560, 1440, 24, 8, 16, SEG_GRAPH } }, { 0x198, { MM_DIRECT, 2560, 1440, 32, 8, 16, SEG_GRAPH } }, + { 0x199, { MM_DIRECT, 3840, 2160, 32, 8, 16, SEG_GRAPH } }, }; unsigned int svga_mcount VAR16 = ARRAY_SIZE(svga_modes); -- 2.25.1

1 month, 1 week

[PATCH v3 0/5] Make seabios linkable with lld

by Fangrui Song

This patch series make seabios linkable with lld. This is beneficial for FreeBSD ports as well https://svnweb.freebsd.org/ports/head/misc/seabios/Makefile as they can drop an LLD_UNSAFE As a maintainer of lld ELF, I have triaged numerous pieces of software. seabios is the only one making use of This drops the only instance https://sourceware.org/bugzilla/show_bug.cgi?id=12726 1, 2, 3 and 4 are really independent and can be applied in arbitrary order. 5 depends on 4. I originally combined 4 and 5 and that was why I don't think a patch series made sense. Fangrui Song (5): romlayout.S: Add missing SHF_ALLOC flag to .fixedaddr.\addr Make rom16.o linkable with lld Makefile: Change ET_EXEC to ET_REL so that lld can link bios.bin.elf romlayout32flag.lds: Use `. +=` instead of `. =` test-build.sh: Delete unneeded LD capability test Makefile | 4 ++++ scripts/layoutrom.py | 13 ++++++++++--- scripts/test-build.sh | 42 +----------------------------------------- src/romlayout.S | 2 +- 4 files changed, 16 insertions(+), 45 deletions(-) -- 2.26.0.292.g33ef6b2f38-goog

5 months, 1 week

[PATCH v3] Increate BUILD_MIN_BIOSTABLE for large roms

by Gerd Hoffmann

BUILD_MIN_BIOSTABLE reserves space in the f-segment. Some data structures -- for example disk drives known to seabios -- must be stored there, so the space available here limits the number of devices seabios is able to manage. This patch sets BUILD_MIN_BIOSTABLE to 8k for bios images being 256k or larger in size. 32bit code is moved off in that case, so we have more room in the f-segment then. Signed-off-by: Gerd Hoffmann <kraxel(a)redhat.com> --- scripts/layoutrom.py | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/scripts/layoutrom.py b/scripts/layoutrom.py index 6616721d1b58..abebf0211fa9 100755 --- a/scripts/layoutrom.py +++ b/scripts/layoutrom.py @@ -651,6 +651,10 @@ def main(): # Read kconfig config file config = scanconfig(cfgfile) + # larger roms have more room in the f-segment due to moving out 32bit code + if config.get('CONFIG_ROM_SIZE') >= 256: + BUILD_MIN_BIOSTABLE = 8192 + # Figure out which sections to keep. allsections = info16[0] + info32seg[0] + info32flat[0] symbols = {'16': info16[1], '32seg': info32seg[1], '32flat': info32flat[1]} -- 2.31.1

7 months, 2 weeks

[PATCH 0/1] stacks: disable NMIs during state restore on call32_post()

by Heitor Alves de Siqueira

Hi all, We've had reports of users hitting KVM emulation failures in certain workloads and were able to track down a missing NMI_DISABLE_BIT in call32_post() when accessing CMOS ports. This patch disables NMIs on state restore, following other accesses to CMOS_PORT_INDEX throughout the seabios code. Heitor Alves de Siqueira (1): stacks: fix missing NMI_DISABLE_BIT on call32_post() src/stacks.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) -- 2.31.1

7 months, 3 weeks

[PATCH 0/2] nvme fixes

by Gerd Hoffmann

Gerd Hoffmann (2): nvme: improve namespace allocation nvme: drive desc should not include the newline src/hw/nvme-int.h | 1 - src/hw/nvme.c | 44 ++++++++++++++++++-------------------------- 2 files changed, 18 insertions(+), 27 deletions(-) -- 2.31.1

7 months, 3 weeks

[PATCH v2] make BUILD_MIN_BIOSTABLE configurable

by Gerd Hoffmann

BUILD_MIN_BIOSTABLE reserves space in the f-segment. Some data structures -- for example disk drives known to seabios -- must be stored there, so the space available here limits the number of devices seabios is able to manage. This patch adds an config option for BUILD_MIN_BIOSTABLE so the size of the reservation can be configured at build time. Default is 8k for bios images being 256k or larger in size (32bit code is moved off then so we have more room in the f-segment), 2k (current value) otherwise. Signed-off-by: Gerd Hoffmann <kraxel(a)redhat.com> --- Makefile | 2 +- scripts/layoutrom.py | 3 ++- src/Kconfig | 7 +++++++ 3 files changed, 10 insertions(+), 2 deletions(-) diff --git a/Makefile b/Makefile index 3d8943ef5f25..ddcd1dff399d 100644 --- a/Makefile +++ b/Makefile @@ -172,7 +172,7 @@ $(OUT)romlayout16.lds: $(OUT)ccode32flat.o $(OUT)code32seg.o $(OUT)ccode16.o $(O $(Q)$(OBJDUMP) -thr $(OUT)code32flat.o > $(OUT)code32flat.o.objdump $(Q)$(OBJDUMP) -thr $(OUT)code32seg.o > $(OUT)code32seg.o.objdump $(Q)$(OBJDUMP) -thr $(OUT)code16.o > $(OUT)code16.o.objdump - $(Q)$(PYTHON) ./scripts/layoutrom.py $(OUT)code16.o.objdump $(OUT)code32seg.o.objdump $(OUT)code32flat.o.objdump $(OUT)$(KCONFIG_AUTOHEADER) $(OUT)romlayout16.lds $(OUT)romlayout32seg.lds $(OUT)romlayout32flat.lds + $(Q)$(PYTHON) ./scripts/layoutrom.py $(OUT)code16.o.objdump $(OUT)code32seg.o.objdump $(OUT)code32flat.o.objdump $(OUT)$(KCONFIG_AUTOHEADER) $(OUT)romlayout16.lds $(OUT)romlayout32seg.lds $(OUT)romlayout32flat.lds $(CONFIG_MIN_BIOSTABLE) # These are actually built by scripts/layoutrom.py above, but by pulling them # into an extra rule we prevent make -j from spawning layoutrom.py 4 times. diff --git a/scripts/layoutrom.py b/scripts/layoutrom.py index 6616721d1b58..94deca9fcc85 100755 --- a/scripts/layoutrom.py +++ b/scripts/layoutrom.py @@ -636,7 +636,8 @@ def scanconfig(file): def main(): # Get output name - in16, in32seg, in32flat, cfgfile, out16, out32seg, out32flat = sys.argv[1:] + in16, in32seg, in32flat, cfgfile, out16, out32seg, out32flat, biostable = sys.argv[1:] + BUILD_MIN_BIOSTABLE = biostable * 1024 # Read in the objdump information infile16 = open(in16, 'r') diff --git a/src/Kconfig b/src/Kconfig index 3a8ffa15fded..95519fc50fa3 100644 --- a/src/Kconfig +++ b/src/Kconfig @@ -140,6 +140,13 @@ endchoice it into 128 KB (which was big enouth for a long time) you'll probably have to disable some featues such as xhci support. + config MIN_BIOSTABLE + int "biostable size (in KB)" + default 8 if ROM_SIZE >= 256 + default 2 + help + Memory space for BIOS tables in f-segment. + endmenu menu "Hardware support" -- 2.31.1

7 months, 3 weeks

[PATCH v2 0/1] fix PS/2 keyboard initialization failures

by Volker Rümelin

Hi, I wrote a few patches for qemu [1] and patch 10/11 exposes a bug in seabios. Sometimes the PS/2 keyboard initialization fails and seabios doesn't detect the keyboard. This patch fixes the PS/2 keyboard initialization. I wouldn't be surprised if my patch also fixes PS/2 keyboard initialization problems on bare metal. A few bug reports look very similar to what I see on my computer with qemu. With best regards, Volker v2: Kevin suggested to call check_irqs() in run_thread(). [1] https://lists.nongnu.org/archive/html/qemu-devel/2021-05/msg02152.html Volker Rümelin (1): stacks: call check_irqs() in run_thread() src/stacks.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) -- 2.26.2

7 months, 4 weeks

[PATCH] vgasrc/vgalayout.lds.S: ignore .node.gnu.property (binutils-2.36 support)

by Sergei Trofimovich

From: Sergei Trofimovich <slyfox(a)gentoo.org> Modern binutils unconditionally tracks x86_64 ISA levels in intermediate files in .note.gnu.property. Custom liker script does not handle the section and complains about it: ld --gc-sections -T out/vgasrc/vgalayout.lds out/vgaccode16.o \ out/vgaentry.o out/vgaversion.o -o out/vgarom.o ld: section .note.gnu.property LMA [0000000000000000,0000000000000027] \ overlaps section .text LMA [0000000000000000,00000000000098af] The change ignores .note.gnu.property section. Signed-off-by: Sergei Trofimovich <slyfox(a)gentoo.org> --- vgasrc/vgalayout.lds.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/vgasrc/vgalayout.lds.S b/vgasrc/vgalayout.lds.S index 533734d..e17d89e 100644 --- a/vgasrc/vgalayout.lds.S +++ b/vgasrc/vgalayout.lds.S @@ -19,5 +19,5 @@ SECTIONS // Discard regular data sections to force a link error if // 16bit code attempts to access data not marked with VAR16. - /DISCARD/ : { *(.text*) *(.rodata*) *(.data*) *(.bss*) *(COMMON) } + /DISCARD/ : { *(.text*) *(.rodata*) *(.data*) *(.bss*) *(COMMON) *(.note.gnu.property) } } -- 2.31.1

7 months, 4 weeks

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SeaBIOS May 2021