SeaBIOS April 2018

seabios@seabios.org

7 participants
6 discussions

Re: [SeaBIOS] [coreboot] Upgrade the 12 years old LZMA libraries - should we do it?

by Carl-Daniel Hailfinger

Hi Ivan, On 03.04.2018 20:03, Ivan Ivanov wrote: > I have noticed that both coreboot and seabios are using the very old > versions of LZMA SDK. True. I introduced the lzma code in coreboot (back when it was called LinuxBIOS) when we were working on OLPC XO-1 support. > If we will upgrade our LZMA libraries from the > outdated-by-12-years 4.42 to the current version 18.04 , speed and > compression ratio should improve and maybe a few bugs will be fixed. Do you have any numbers for this? An improved compression ratio and improved speed would be nice indeed, but how does the size of the decompression code change? If the decompression code grows more than the size reduction from better compression, it would be a net loss. A significantly reduced decompression speed would also be a problem. Decompression speed would have to be measured both for stream decompression (i.e. the decompressor gets the compressed data in single-byte or multibyte chunks) as well as full-size decompression (i.e. the decompressor can access all compressed data at once). We also have to make sure that stream decompression still works after the change. > Do you think it should be done, or you are OK with using such an > outdated version? A size benefit for the resulting image is a good reason to switch. Regards, Carl-Daniel

2 years, 8 months

K-TEK-M275TP-FN-BL-ML USB keyboard support

by Аладышев Константин

Hello! I'm having problems with K-TEK-M275TP-FN-BL-ML keyboard (http://www.key-tek.cn/Productview.asp?id=777). It is USB device with keyboard and touchpad combined. It works in OS correctly, but doesn't work in SeaBIOS. I've tried to debug this issue and found that "usb_kbd_setup" function fails on "(epdesc->wMaxPacketSize != 8)" check, cause "epdesc->wMaxPacketSize" is actually 32. I've modified this "if" statement to pass 32 value also and now function completes successfully. But it didn't help to solve my issue. There are no interrupts from keyboard, "ehci_poll_intr" always returns -1 on check: if (token & QTD_STS_ACTIVE) { // No intrs found. return -1; } I don't know what to do now. What should I check next? Does SeaBIOS support USB keyboard+touchpad devices at all?

3 years, 5 months

[PATCH] tpm: Request access to locality 0

by Stefan Berger

The CRB driver has to request access to locality 0. Our QEMU CRB model will enforce that as well. Signed-off-by: Stefan Berger <stefanb(a)linux.vnet.ibm.com> --- src/hw/tpm_drivers.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/src/hw/tpm_drivers.c b/src/hw/tpm_drivers.c index bd971f7..e4770b3 100644 --- a/src/hw/tpm_drivers.c +++ b/src/hw/tpm_drivers.c @@ -442,6 +442,8 @@ static u32 crb_activate(u8 locty) if (!CONFIG_TCGBIOS) return 0; + writeb(CRB_REG(locty, CRB_REG_LOC_CTRL), 1); + return 0; } -- 2.5.5

3 years, 6 months

Re: [SeaBIOS] [coreboot] Upgrade the 12 years old LZMA libraries - should we do it?

by Zoran Stojsavljevic

Privet Ivan, I would say that Coreboot should go for the greatest and latest. Since everything from far back in Time is refined, mostly bug free (unless the new releases do not include some new introduced bugs, which are fixed (usually) in immediate releases). This is more matter of the right chosen strategy, which every package and/or library should follow. Zoran _______ On Tue, Apr 3, 2018 at 8:03 PM, Ivan Ivanov <qmastery16(a)gmail.com> wrote: > I have noticed that both coreboot and seabios are using the very old > versions of LZMA SDK. If we will upgrade our LZMA libraries from the > outdated-by-12-years 4.42 to the current version 18.04 , speed and > compression ratio should improve and maybe a few bugs will be fixed. > Do you think it should be done, or you are OK with using such an > outdated version? > > Best regards, > Ivan Ivanov aka qmastery > > -- > coreboot mailing list: coreboot(a)coreboot.org > https://mail.coreboot.org/mailman/listinfo/coreboot

3 years, 6 months

Upgrade the 12 years old LZMA libraries - should we do it?

by Ivan Ivanov

I have noticed that both coreboot and seabios are using the very old versions of LZMA SDK. If we will upgrade our LZMA libraries from the outdated-by-12-years 4.42 to the current version 18.04 , speed and compression ratio should improve and maybe a few bugs will be fixed. Do you think it should be done, or you are OK with using such an outdated version? Best regards, Ivan Ivanov aka qmastery

3 years, 6 months

[PATCH] tpm: Disable TCGBIOS by default

by Jean Lucas

When TCGBIOS is enabled on a machine without a physical TPM, SeaBIOS takes over half a minute to print to the display, and over another half minute before handing control over to a boot device. Disable this option by default to have it be an explicit choice. Tested on a Dell Inspiron 660s (no TPM) configured with libgfxinit, and, separately, configured with a PCIe video card with onboard VGA BIOS. Signed-off-by: Jean Lucas <jean(a)4ray.co> --- src/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/Kconfig b/src/Kconfig index 55a87cb..b5d370a 100644 --- a/src/Kconfig +++ b/src/Kconfig @@ -467,7 +467,7 @@ menu "BIOS interfaces" config TCGBIOS depends on S3_RESUME bool "TPM support and TCG BIOS extensions" - default y + default n help Provide TPM support along with TCG BIOS extensions -- 2.16.2

3 years, 6 months

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SeaBIOS April 2018