SeaBIOS October 2020

seabios@seabios.org

5 participants
7 discussions

[PATCH v3 0/4] nvme: Add PRP List support
by Alexander Graf 18 Jan '22

18 Jan '22

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

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[PATCH v3 0/5] Make seabios linkable with lld
by Fangrui Song 11 Aug '21

11 Aug '21

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

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[PATCH] AHCI: The attached ATA device cannot be detected when binding AHCI controller to Virtual Machine
by RunaGuo-oc＠zhaoxin.com 29 Mar '21

29 Mar '21

When binding AHCI controller to virtual machine, the attached ATA device cannot be recognized for the following reason: The first Identify PACKET CMD will be failed without dobut which will lead PORT_IRQ_TF_ERR be set in PxIS due to ERR bit set to 1 in D2H Register FIS(PxTFD.STS.ERR=1). In this case, the first CMD will be timeout for seabios only polling PORT_IRQ_D2H_REG_FIS & PORT_IRQ_PIOS_FIS before triggering error handling which leads AHCI controller is an error state, then the second IDENTIFY CMD cannot be issued by AHCI controller, no ATA device will be detected. In AHCI spec HBA Port State Machine section(5.3.8.1 and 5.3.16.5), we can see this sequence: RegFIS:Entry --> ERR:FatalTaskfile (PxTFD.STS.ERR=1) --> ERR:WaitForClear, no entry for PORT_IRQ_D2H_REG_FIS/PORT_IRQ_PIOS_FIS to be set at this time. May be we can also add PORT_IRQ_TF_ERR bit check when polling command completion status? fail log: 02.386: |bffa6000| AHCI/1: link up 02.387: |bffa6000| AHCI/1: send cmd ... 02.387: |bffa7000| phys_free bffa9c00 (detail=0xbffaa320) 02.396: |bffa7000| phys_free bffaa200 (detail=0xbffaa1d0) 02.396: |bffa7000| phys_free bffaa000 (detail=0xbffaa1a0) 02.396: |bffa7000| phys_free bffaa380 (detail=0xbffaa350) 02.400: \bffa7000/ End thread 02.401: phys_free bffa7000 (detail=0xbffaa170) 34.391: |bffa6000| WARNING - Timeout at ahci_command:153! 34.392: |bffa6000| AHCI/1: send cmd ... 66.397: |bffa6000| WARNING - Timeout at ahci_command:153! Signed-off-by: zhaoxin\runaguooc <RunaGuo-oc(a)zhaoxin.com> --- src/hw/ahci.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/src/hw/ahci.c b/src/hw/ahci.c index d45b430..bab5c35 100644 --- a/src/hw/ahci.c +++ b/src/hw/ahci.c @@ -104,7 +104,7 @@ static void ahci_port_writel(struct ahci_ctrl_s *ctrl, u32 pnr, u32 reg, u32 val static int ahci_command(struct ahci_port_s *port_gf, int iswrite, int isatapi, void *buffer, u32 bsize) { - u32 val, status, success, flags, intbits, error; + u32 val, status, success, flags, intbits, error, tf; struct ahci_ctrl_s *ctrl = port_gf->ctrl; struct ahci_cmd_s *cmd = port_gf->cmd; struct ahci_fis_s *fis = port_gf->fis; @@ -148,6 +148,14 @@ static int ahci_command(struct ahci_port_s *port_gf, int iswrite, int isatapi, error = GET_LOWFLAT(fis->rfis[3]); break; } + + if(intbits & PORT_IRQ_TF_ERR){ + tf = ahci_port_readl(ctrl,pnr,PORT_TFDATA); + status = tf & 0xff; + error = tf & 0xff00; + break; + } + } if (timer_check(end)) { warn_timeout(); -- 2.17.1

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Universal Payload Project
by Paul Menzel 29 Oct '20

29 Oct '20

Dear coreboot, GRUB, and SeaBIOS folks, In #coreboot(a)irc.freenode.net somebody mentioned the Universal Payload Project [1]. > The goal of this project is to define an interface between a first > stage platform initialization bootloader and a second stage payload. As there also is a specification [2], I just wanted to make you aware of it, in case you have comments. Please keep in mind, that I do not know more details, so please do not jump to conclusions. Kind regards, Paul [1]: https://github.com/universalpayload/Introduction [2]: https://universalpayload.github.io/documentation/spec/spec.html

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[PATCH] usb boot: add xhci mmio example
by Gerd Hoffmann 15 Oct '20

15 Oct '20

Signed-off-by: Gerd Hoffmann <kraxel(a)redhat.com> --- src/boot.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/boot.c b/src/boot.c index bd78fb907c5a..1effd802ce06 100644 --- a/src/boot.c +++ b/src/boot.c @@ -423,7 +423,9 @@ int bootprio_find_usb(struct usbdevice_s *usbdev, int lun) { if (!CONFIG_BOOTORDER) return -1; - // Find usb - for example: /pci@i0cf8/usb@1,2/storage@1/channel@0/disk@0,0 + // Find usb - examples: + // pci: /pci@i0cf8/usb@1,2/storage@1/channel@0/disk@0,0 + // mmio: /sysbus-xhci@00000000fe900000/storage@1/channel@0/disk@0,0 char desc[256], *p; if (usbdev->hub->cntl->pci) -- 2.27.0

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[PATCH 0/3] usb/xhci: add support for mmio host adapters (via acpi).
by Gerd Hoffmann 13 Oct '20

13 Oct '20

Gerd Hoffmann (3): usb: add boot prio support for mmio host adapters usb/xhci: split xhci setup into generic and pci parts usb/xhci: add support for mmio host adapters (via acpi). src/hw/usb.h | 1 + src/boot.c | 10 ++++++- src/hw/usb-xhci.c | 71 ++++++++++++++++++++++++++++++++++++++--------- 3 files changed, 68 insertions(+), 14 deletions(-) -- 2.27.0

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[PATCH 0/2] dsdt: add support for pnp ids as strings
by Gerd Hoffmann 13 Oct '20

13 Oct '20

Gerd Hoffmann (2): output: add support for uppercase hex numbers dsdt: add support for pnp ids as strings src/fw/dsdt_parser.c | 21 +++++++++++-------- src/output.c | 49 ++++++++++++++++++++++++-------------------- 2 files changed, 40 insertions(+), 30 deletions(-) -- 2.27.0

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SeaBIOS October 2020