SeaBIOS November 2022

seabios@seabios.org

13 participants
12 discussions

[PATCH 1/1] virtio-blk: Fix incorrect type conversion in virtio_blk_op()
by Xiaofei 10 Nov '22

10 Nov '22

When using spdk aio bdev driver, the qemu command line like this: qemu-system-x86_64 \ -chardev socket,id=char0,path=/tmp/vhost.0 \ -device vhost-user-blk-pci,id=blk0,chardev=char0 \ ... Boot failure message as below: e820 map has 7 items: 0: 0000000000000000 - 000000000009fc00 = 1 RAM 1: 000000000009fc00 - 00000000000a0000 = 2 RESERVED 2: 00000000000f0000 - 0000000000100000 = 2 RESERVED 3: 0000000000100000 - 000000007ffdd000 = 1 RAM 4: 000000007ffdd000 - 0000000080000000 = 2 RESERVED 5: 00000000feffc000 - 00000000ff000000 = 2 RESERVED 6: 00000000fffc0000 - 0000000100000000 = 2 RESERVED enter handle_19: NULL Booting from Hard Disk... Boot failed: could not read the boot disk Signed-off-by: Xiaofei <hbuxiaofei(a)gmail.com> --- src/hw/virtio-blk.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/hw/virtio-blk.c b/src/hw/virtio-blk.c index 9b4a05a..ce3265e 100644 --- a/src/hw/virtio-blk.c +++ b/src/hw/virtio-blk.c @@ -92,7 +92,7 @@ virtio_blk_op(struct disk_op_s *op, int write) u16 blk_num_max; if (vdrive->drive.blksize != 0 && max_io_size != 0) - blk_num_max = (u16)max_io_size / vdrive->drive.blksize; + blk_num_max = (u16)(max_io_size / vdrive->drive.blksize); else /* default blk_num_max if hardware doesnot advise a proper value */ blk_num_max = 64; -- 2.27.0

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PCIe ECAM space
by Ugo Cirmignani 10 Nov '22

10 Nov '22

Hello, I would like to read the MAC address from PCIe ECAM space under SeaBIOS, I have been able to read from the PCI standard registers with the pci_config_read(w-l-b) functions, but I have seen that there are no functions to read from the ECAM space. According to the PCIe standards there is a base address and an offset for each PCIe device where to read from, but it seems there are no examples or other implementation in the source codes except for QEMU. Any help would be appreciated. Regards Ugo

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SeaBIOS November 2022