SeaBIOS June 2021

seabios@seabios.org

10 participants
15 discussions

[PATCH v4 0/2] fix PS/2 keyboard initialization failures
by Volker Rümelin 09 Jun '21

09 Jun '21

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(). v3: Add a new patch to fix the asm constraints in run_thread(). The changes are required for the next patch. Kevin suggested to call check_irqs() after the new thread ran in run_thread(). Fixed an error in the commit message. Call check_irqs() after switch_next() in yield(). v4: Drop the patch to fix the asm constraints in run_thread(). Rename cur to edx in the asm constraints in run_thread() to make it clear that edx is clobbered after the asm statement. Volker Rümelin (2): stacks: call check_irqs() in run_thread() stacks: call check_irqs() after switch_next() src/stacks.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) -- 2.26.2

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[PATCH v3 0/3] fix PS/2 keyboard initialization failures
by Volker Rümelin 04 Jun '21

04 Jun '21

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(). v3: Add a new patch to fix the asm constraints in run_thread(). The changes are required for the next patch. Kevin suggested to call check_irqs() after the new thread ran in run_thread(). Fixed an error in the commit message. Call check_irqs() after switch_next() in yield(). [1]https://lists.nongnu.org/archive/html/qemu-devel/2021-05/msg02152.html Volker Rümelin (3): stacks: fix asm constraints in run_thread() stacks: call check_irqs() in run_thread() stacks: call check_irqs() after switch_next() src/stacks.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) -- 2.26.2

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[PATCH v3] Increate BUILD_MIN_BIOSTABLE for large roms
by Gerd Hoffmann 04 Jun '21

04 Jun '21

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

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[PATCH 0/1] stacks: disable NMIs during state restore on call32_post()
by Heitor Alves de Siqueira 01 Jun '21

01 Jun '21

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

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[PATCH 0/2] nvme fixes
by Gerd Hoffmann 01 Jun '21

01 Jun '21

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

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SeaBIOS June 2021