OpenBIOS September 2018

openbios@openbios.org

2 participants
3 discussions

Re: [OpenBIOS] Back at it again( PCI Passthrough )
by Jd Lyons 13 Jul '19

13 Jul '19

Ok, I made those changes to openbios, here is the output. > On May 8, 2018, at 6:50 AM, Joe van Tunen <joevt(a)shaw.ca> wrote: > > : (debug-feval) ( fcode# -- fcode# ) > \ Address > fcode-stream 1 - . here u. ." : " > > \ Indicate if word is compiled > state @ 0<> if > ." (compile) " > then > dup fcode>xt cell - lfa2name type > dup ." [ 0x" . ." ]" cr > ;

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[PATCH 0/4] Add virtio-blk driver support
by Mark Cave-Ayland 18 Oct '18

18 Oct '18

These patches add support for booting from virtio-blk (PCI) devices as used by QEMU. Patches 1 and 2 add bootindex support which is the new way for passing boot order information from QEMU to OpenBIOS. Note that there are also corresponding patches for QEMU required, without which the generated device paths will be incorrect and cause virtio boot to fail. Patch 3 adds the legacy virtio-blk driver (it follows the 0.9 rather than the 1.0 specification). Patch 4 enables the new driver for both PPC and SPARC64 architectures so that virtio-blk devices will be usable out-of-the-box with QEMU. Once these patches have been applied to OpenBIOS (along with the corresponding fw path fixes for QEMU) it is possible to boot from virtio-blk devices like this: PPC: ./qemu-system-ppc -drive file=debian-9.0-powerpc-NETINST.iso,if=none,index=0,id=cd,media=cdrom \ -device virtio-blk-pci,drive=cd,bootindex=0 -m 256 -boot d SPARC: ./qemu-system-sparc64 -drive debian-9.0-sparc64-NETINST.iso,if=none,index=0,id=cd,media=cdrom \ -device virtio-blk-pci,bus=pciB,drive=cd,bootindex=0 -m 256 -boot d -nographic Signed-off-by: Mark Cave-Ayland <mark.cave-ayland(a)ilande.co.uk> Mark Cave-Ayland (4): ppc: add bootindex support SPARC64: add bootindex support drivers: add legacy virtio-blk driver config: enable virtio-blk driver for default PPC and SPARC64 builds arch/ppc/qemu/init.c | 55 ++++- arch/sparc64/boot.c | 2 +- arch/sparc64/boot.h | 2 +- arch/sparc64/openbios.c | 38 +++- config/examples/ppc_config.xml | 1 + config/examples/sparc64_config.xml | 1 + drivers/build.xml | 1 + drivers/pci.c | 18 ++ drivers/pci_database.c | 4 +- drivers/pci_database.h | 1 + drivers/virtio.c | 424 +++++++++++++++++++++++++++++++++++++ drivers/virtio.h | 331 +++++++++++++++++++++++++++++ include/drivers/drivers.h | 4 + 13 files changed, 862 insertions(+), 20 deletions(-) create mode 100644 drivers/virtio.c create mode 100644 drivers/virtio.h -- 2.11.0

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[PATCH] prep: change residual data model name to IBM PPS Model 6015
by Mark Cave-Ayland 10 Sep '18

10 Sep '18

With the corresponding QEMU patches applied, it is now possible to change the reported firmware name to that of a real 40p machine and boot to a working userspace with the Linux sandalfoot zImage. Note that whilst guest OSs should be relying on residual data rather than the OF device tree to determine the hardware, we still update the interrupt properties to match the new code in QEMU for consistency. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland(a)ilande.co.uk> --- arch/ppc/qemu/context.c | 2 +- drivers/pci.c | 24 ++++++++++++++++++++---- 2 files changed, 21 insertions(+), 5 deletions(-) diff --git a/arch/ppc/qemu/context.c b/arch/ppc/qemu/context.c index 06e0122..5815895 100644 --- a/arch/ppc/qemu/context.c +++ b/arch/ppc/qemu/context.c @@ -111,7 +111,7 @@ static void * residual_build(uint32_t memsize, uint32_t load_base, uint32_t load_size) { residual_t *res; - const unsigned char model[] = "Qemu\0PPC\0"; + const unsigned char model[] = "IBM PPS Model 6015\0"; int i; res = malloc(sizeof(residual_t)); diff --git a/drivers/pci.c b/drivers/pci.c index 8f97ae1..df6d9d0 100644 --- a/drivers/pci.c +++ b/drivers/pci.c @@ -1986,10 +1986,26 @@ static phandle_t ob_pci_host_set_interrupt_map(phandle_t host) static void ob_pci_host_bus_interrupt(ucell dnode, u32 *props, int *ncells, u32 addr, u32 intno) { *ncells += pci_encode_phys_addr(props + *ncells, 0, 0, addr, 0, 0); - props[(*ncells)++] = intno; - props[(*ncells)++] = dnode; - props[(*ncells)++] = arch->irqs[((intno - 1) + (addr >> 11)) & 3]; - props[(*ncells)++] = 1; + + if (is_oldworld() || is_newworld()) { + /* Mac machines */ + props[(*ncells)++] = intno; + props[(*ncells)++] = dnode; + props[(*ncells)++] = arch->irqs[((intno - 1) + (addr >> 11)) & 3]; + props[(*ncells)++] = 1; + } else { + /* PReP machines */ + props[(*ncells)++] = intno; + props[(*ncells)++] = dnode; + + if (PCI_DEV(addr) == 1 && PCI_FN(addr) == 0) { + /* LSI SCSI has fixed routing */ + props[(*ncells)++] = 2; + } else { + props[(*ncells)++] = arch->irqs[((intno - 1) + (addr >> 11)) & 1]; + } + props[(*ncells)++] = 1; + } } #elif defined(CONFIG_SPARC64) -- 2.11.0

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