SeaBIOS

seabios@seabios.org

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3801 discussions

Re: [SeaBIOS] [PATCH] coreboot: Add support for FMAP and multiple CBFS
by Kevin O'Connor 11 Mar '16

11 Mar '16

On Thu, Mar 10, 2016 at 11:11:59AM -0600, Ben Gardner wrote: > Hi Kevin, > > I plan to have the default CBFS contain only coreboot and SeabIOS and > a few payloads (coreinfo, memtest86, PXE) that I don't intend to > change often. > That would be protected with a hash and would be kept small for > performance reasons. > ChromeOS appears to do something similar and take it a step further > and write-protect that "read only" region of flash. > > The other CBFS would contain larger images that I'm likely to change, > such as Linux. > > There is a chance of name conflicts and that may cause problems. > In my use case, the answer is "don't do that". > > From a random sampling of FMD files in the coreboot tree > (google/glados/chromeos.fmd), I see that ChromeOS uses three: > FW_MAIN_A, FW_MAIN_B, and the default COREBOOT. > Assuming FW_MAIN_A and FW_MAIN_B contain files with similar names, > that would cause confusion if they use SeaBIOS. > But I think that ChromeOS is switching to use the Depthcharge bootloader. > > So, maybe this wouldn't work well for everyone. Thanks. If this may not work for everyone, then I suggest adding a build time (kconfig) or runtime (cbfs) setting to enable/disable it. Normally runtime settings are preferred, but that may not work here. -Kevin

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Re: [SeaBIOS] mame
by Gerd Hoffmann 11 Mar '16

11 Mar '16

Hi, > My name is Miodrag and I am coordinator of MAME project > (www.mamedev.org), we would like to distribute seabios roms if > possible together with our binaries to show PC capable emulation. All > is free and project is under GPL2+ license. seabios is GPL, so this is perfectly fine as long as you also provide the source code used to build the binaries (as required by GPL). If you are using seabios unmodified I'd recommend to place a upstream git mirror next to the mame repos @ github. qemu does the same on http://git.qemu.org/, for GPL compliance reasons, and also because it's more convenient that way for the seabios submodule we have in qemu. If you have patched seabios you have to publish the changes too of course, and I recommend to sent the patches for review and upstream merge to the seabios mailing list (which I've added to Cc). thanks, Gerd

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[PATCH] coreboot: Add support for FMAP and multiple CBFS
by Ben Gardner 10 Mar '16

10 Mar '16

ROM images with a FMAP may have multiple CBFS. Scan all available CBFS so that, say, a SeaBIOS bootable image doesn't have to be in the main CBFS. Coreboot puts the FMAP location in the BOOT_MEDIA_PARAMS entry in the coreboot table. We can grab that and can all regions for CBFS files. Signed-off-by: Ben Gardner <gardner.ben(a)gmail.com> --- src/fw/coreboot.c | 148 +++++++++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 124 insertions(+), 24 deletions(-) diff --git a/src/fw/coreboot.c b/src/fw/coreboot.c index 4957b80..0309832 100644 --- a/src/fw/coreboot.c +++ b/src/fw/coreboot.c @@ -86,6 +86,41 @@ struct cbmem_console { } PACKED; static struct cbmem_console *cbcon = NULL; +#define CB_TAG_BOOT_MEDIA_PARAMS 0x0030 +struct cb_boot_media_params { + u32 tag; + u32 size; + /* offsets are relative to start of boot media */ + u64 fmap_offset; + u64 cbfs_offset; + u64 cbfs_size; + u64 boot_media_size; +}; + +#define FMAP_SIGNATURE "__FMAP__" +#define FMAP_VER_MAJOR 1 /* this header's FMAP minor version */ +#define FMAP_VER_MINOR 1 /* this header's FMAP minor version */ +#define FMAP_STRLEN 32 /* maximum length for strings, */ + +/* Mapping of volatile and static regions in firmware binary */ +struct fmap_area { + u32 offset; /* offset relative to base */ + u32 size; /* size in bytes */ + u8 name[FMAP_STRLEN]; /* descriptive name */ + u16 flags; /* flags for this area */ +} PACKED; + +struct fmap { + u8 signature[8]; /* "__FMAP__" (0x5F5F464D41505F5F) */ + u8 ver_major; /* major version */ + u8 ver_minor; /* minor version */ + u64 base; /* address of the firmware binary */ + u32 size; /* size of firmware binary in bytes */ + u8 name[FMAP_STRLEN]; /* name of this firmware binary */ + u16 nareas; /* number of areas described by fmap_areas[] below */ + struct fmap_area areas[]; +} PACKED; + static u16 ipchksum(char *buf, int count) { @@ -159,6 +194,39 @@ find_cb_table(void) static struct cb_memory *CBMemTable; const char *CBvendor = "", *CBpart = ""; +struct fmap *CBfmap; + +static void +fmap_init(struct fmap *fm) +{ + if (memcmp(fm->signature, FMAP_SIGNATURE, sizeof(fm->signature)) != 0) { + dprintf(1, "FMAP: bad signature\n"); + return; + } + if ((fm->ver_major != FMAP_VER_MAJOR) || + (fm->ver_minor != FMAP_VER_MINOR)) { + dprintf(1, "FMAP: bad version %d.%d\n", fm->ver_major, fm->ver_minor); + return; + } + + /* print out the FMAP contents */ + void *base = (void *)(uintptr_t)fm->base; + dprintf(1, "FMAP: %p 0x%08x 0x%04x %s\n", + base, fm->size, fm->nareas, fm->name); + + int idx; + for (idx = 0; idx < fm->nareas; idx++) { + struct fmap_area *fa = &fm->areas[idx]; + const u8 *ptr = base + fa->offset; + int is_cbfs = (fa->size > 4096) && (memcmp(ptr, "LARCHIVE", 8) == 0); + dprintf(is_cbfs ? 1 : 3, + " [%d] %p 0x%08x 0x%04x %s%s\n", + idx, ptr, fa->size, fa->flags, fa->name, + is_cbfs ? "(CBFS)" : ""); + } + /* looks good -- save the FMAP pointer for later */ + CBfmap = fm; +} // Populate max ram and e820 map info by scanning for a coreboot table. void @@ -205,6 +273,17 @@ coreboot_preinit(void) dprintf(1, "Found mainboard %s %s\n", CBvendor, CBpart); } + struct cb_boot_media_params *cbbmb = find_cb_subtable(cbh, CB_TAG_BOOT_MEDIA_PARAMS); + if (cbbmb) { + /* ~0 is used to indicate 'not present' */ + if ((cbbmb->fmap_offset + 1) != 0) { + /* Assuming the ROM map ends at 4 GB */ + u8 *base = (u8 *)(u32)~(cbbmb->boot_media_size - 1); + struct fmap *fm = (void *)(base + cbbmb->fmap_offset); + fmap_init(fm); + } + } + return; fail: @@ -414,30 +493,11 @@ process_links_file(void) free(links); } -void -coreboot_cbfs_init(void) +static void +coreboot_cbfs_scan(struct cbfs_file *fhdr, u32 romsize, u32 align) { - if (!CONFIG_COREBOOT_FLASH) - return; - - struct cbfs_header *hdr = *(void **)(CONFIG_CBFS_LOCATION - 4); - if ((u32)hdr & 0x03) { - dprintf(1, "Invalid CBFS pointer %p\n", hdr); - return; - } - if (CONFIG_CBFS_LOCATION && (u32)hdr > CONFIG_CBFS_LOCATION) - // Looks like the pointer is relative to CONFIG_CBFS_LOCATION - hdr = (void*)hdr + CONFIG_CBFS_LOCATION; - if (hdr->magic != cpu_to_be32(CBFS_HEADER_MAGIC)) { - dprintf(1, "Unable to find CBFS (ptr=%p; got %x not %x)\n" - , hdr, hdr->magic, cpu_to_be32(CBFS_HEADER_MAGIC)); - return; - } - dprintf(1, "Found CBFS header at %p\n", hdr); + u32 romstart = (u32)fhdr; - u32 romsize = be32_to_cpu(hdr->romsize); - u32 romstart = CONFIG_CBFS_LOCATION - romsize; - struct cbfs_file *fhdr = (void*)romstart + be32_to_cpu(hdr->offset); for (;;) { if ((u32)fhdr - romstart > romsize) break; @@ -464,8 +524,48 @@ coreboot_cbfs_init(void) } romfile_add(&cfile->file); - fhdr = (void*)ALIGN((u32)cfile->data + cfile->rawsize - , be32_to_cpu(hdr->align)); + fhdr = (void*)ALIGN((u32)cfile->data + cfile->rawsize, align); + } +} + +void +coreboot_cbfs_init(void) +{ + if (!CONFIG_COREBOOT_FLASH) + return; + + if (CBfmap) { + void *base = (void *)(uintptr_t)CBfmap->base; + int idx; + + for (idx = 0; idx < CBfmap->nareas; idx++) { + struct fmap_area *fa = &CBfmap->areas[idx]; + struct cbfs_file *cf = (struct cbfs_file *)(base + fa->offset); + if (fa->size > 4096) { + coreboot_cbfs_scan(cf, fa->size, 64); + } + } + } else { + /* no FMAP - read CBFS header location from last 4 bytes of ROM */ + struct cbfs_header *hdr = *(void **)(CONFIG_CBFS_LOCATION - 4); + if ((u32)hdr & 0x03) { + dprintf(1, "Invalid CBFS pointer %p\n", hdr); + return; + } + if (CONFIG_CBFS_LOCATION && (u32)hdr > CONFIG_CBFS_LOCATION) + // Looks like the pointer is relative to CONFIG_CBFS_LOCATION + hdr = (void*)hdr + CONFIG_CBFS_LOCATION; + if (hdr->magic != cpu_to_be32(CBFS_HEADER_MAGIC)) { + dprintf(1, "Unable to find CBFS (ptr=%p; got %x not %x)\n", + hdr, hdr->magic, cpu_to_be32(CBFS_HEADER_MAGIC)); + return; + } + dprintf(1, "Found CBFS header at %p\n", hdr); + + u32 romsize = be32_to_cpu(hdr->romsize); + u32 romstart = CONFIG_CBFS_LOCATION - romsize; + struct cbfs_file *fhdr = (void*)romstart + be32_to_cpu(hdr->offset); + coreboot_cbfs_scan(fhdr, romsize, be32_to_cpu(hdr->align)); } process_links_file(); -- 1.9.1

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[PATCH V2] fw/pci: add Q35 S3 support
by Marcel Apfelbaum 07 Mar '16

07 Mar '16

Following the i440fx example, save the LPC, SMBUS and PCIEXBAR bdfs between OS sleeps and use them to re-configure the corresponding registers. Tested-by: Gal Hammer <ghammer(a)redhat.com> Signed-off-by: Marcel Apfelbaum <marcel(a)redhat.com> --- Hi, v1 -> v2: - made ICH9SmbusBDF static (Laszlo) - use "patience" diff for git-format (Laszlo) (no change this time, maybe will help next time, I added it to my script) The patch was tested with Win7 and Fedora 23 guests. Any comments are welcomed. Thanks, Marcel src/fw/pciinit.c | 73 +++++++++++++++++++++++++++++++++++++++++++------------- 1 file changed, 56 insertions(+), 17 deletions(-) diff --git a/src/fw/pciinit.c b/src/fw/pciinit.c index 5da6cf6..b2a546b 100644 --- a/src/fw/pciinit.c +++ b/src/fw/pciinit.c @@ -149,6 +149,22 @@ static void piix_isa_bridge_setup(struct pci_device *pci, void *arg) dprintf(1, "PIIX3/PIIX4 init: elcr=%02x %02x\n", elcr[0], elcr[1]); } +static void mch_isa_lpc_setup(u16 bdf) +{ + /* pm io base */ + pci_config_writel(bdf, ICH9_LPC_PMBASE, + acpi_pm_base | ICH9_LPC_PMBASE_RTE); + + /* acpi enable, SCI: IRQ9 000b = irq9*/ + pci_config_writeb(bdf, ICH9_LPC_ACPI_CTRL, ICH9_LPC_ACPI_CTRL_ACPI_EN); + + /* set root complex register block BAR */ + pci_config_writel(bdf, ICH9_LPC_RCBA, + ICH9_LPC_RCBA_ADDR | ICH9_LPC_RCBA_EN); +} + +static int ICH9LpcBDF = -1; + /* ICH9 LPC PCI to ISA bridge */ /* PCI_VENDOR_ID_INTEL && PCI_DEVICE_ID_INTEL_ICH9_LPC */ static void mch_isa_bridge_setup(struct pci_device *dev, void *arg) @@ -176,16 +192,10 @@ static void mch_isa_bridge_setup(struct pci_device *dev, void *arg) outb(elcr[1], ICH9_LPC_PORT_ELCR2); dprintf(1, "Q35 LPC init: elcr=%02x %02x\n", elcr[0], elcr[1]); - /* pm io base */ - pci_config_writel(bdf, ICH9_LPC_PMBASE, - acpi_pm_base | ICH9_LPC_PMBASE_RTE); + ICH9LpcBDF = bdf; - /* acpi enable, SCI: IRQ9 000b = irq9*/ - pci_config_writeb(bdf, ICH9_LPC_ACPI_CTRL, ICH9_LPC_ACPI_CTRL_ACPI_EN); + mch_isa_lpc_setup(bdf); - /* set root complex register block BAR */ - pci_config_writel(bdf, ICH9_LPC_RCBA, - ICH9_LPC_RCBA_ADDR | ICH9_LPC_RCBA_EN); e820_add(ICH9_LPC_RCBA_ADDR, 16*1024, E820_RESERVED); acpi_pm1a_cnt = acpi_pm_base + 0x04; @@ -244,11 +254,8 @@ static void piix4_pm_setup(struct pci_device *pci, void *arg) pmtimer_setup(acpi_pm_base + 0x08); } -/* ICH9 SMBUS */ -/* PCI_VENDOR_ID_INTEL && PCI_DEVICE_ID_INTEL_ICH9_SMBUS */ -static void ich9_smbus_setup(struct pci_device *dev, void *arg) +static void ich9_smbus_enable(u16 bdf) { - u16 bdf = dev->bdf; /* map smbus into io space */ pci_config_writel(bdf, ICH9_SMB_SMB_BASE, (acpi_pm_base + 0x100) | PCI_BASE_ADDRESS_SPACE_IO); @@ -257,6 +264,17 @@ static void ich9_smbus_setup(struct pci_device *dev, void *arg) pci_config_writeb(bdf, ICH9_SMB_HOSTC, ICH9_SMB_HOSTC_HST_EN); } +static int ICH9SmbusBDF = -1; + +/* ICH9 SMBUS */ +/* PCI_VENDOR_ID_INTEL && PCI_DEVICE_ID_INTEL_ICH9_SMBUS */ +static void ich9_smbus_setup(struct pci_device *dev, void *arg) +{ + ICH9SmbusBDF = dev->bdf; + + ich9_smbus_enable(dev->bdf); +} + static const struct pci_device_id pci_device_tbl[] = { /* PIIX3/PIIX4 PCI to ISA bridge */ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, @@ -293,6 +311,9 @@ static const struct pci_device_id pci_device_tbl[] = { PCI_DEVICE_END, }; +static int MCHMmcfgBDF = -1; +static void mch_mmconfig_setup(u16 bdf); + void pci_resume(void) { if (!CONFIG_QEMU) { @@ -302,6 +323,18 @@ void pci_resume(void) if (PiixPmBDF >= 0) { piix4_pm_config_setup(PiixPmBDF); } + + if (ICH9LpcBDF >= 0) { + mch_isa_lpc_setup(ICH9LpcBDF); + } + + if (ICH9SmbusBDF >= 0) { + ich9_smbus_enable(ICH9SmbusBDF); + } + + if(MCHMmcfgBDF >= 0) { + mch_mmconfig_setup(MCHMmcfgBDF); + } } static void pci_bios_init_device(struct pci_device *pci) @@ -388,18 +421,24 @@ static void i440fx_mem_addr_setup(struct pci_device *dev, void *arg) pci_slot_get_irq = piix_pci_slot_get_irq; } -static void mch_mem_addr_setup(struct pci_device *dev, void *arg) +static void mch_mmconfig_setup(u16 bdf) { u64 addr = Q35_HOST_BRIDGE_PCIEXBAR_ADDR; - u32 size = Q35_HOST_BRIDGE_PCIEXBAR_SIZE; - - /* setup mmconfig */ - u16 bdf = dev->bdf; u32 upper = addr >> 32; u32 lower = (addr & 0xffffffff) | Q35_HOST_BRIDGE_PCIEXBAREN; pci_config_writel(bdf, Q35_HOST_BRIDGE_PCIEXBAR, 0); pci_config_writel(bdf, Q35_HOST_BRIDGE_PCIEXBAR + 4, upper); pci_config_writel(bdf, Q35_HOST_BRIDGE_PCIEXBAR, lower); +} + +static void mch_mem_addr_setup(struct pci_device *dev, void *arg) +{ + u64 addr = Q35_HOST_BRIDGE_PCIEXBAR_ADDR; + u32 size = Q35_HOST_BRIDGE_PCIEXBAR_SIZE; + + /* setup mmconfig */ + MCHMmcfgBDF = dev->bdf; + mch_mmconfig_setup(dev->bdf); e820_add(addr, size, E820_RESERVED); /* setup pci i/o window (above mmconfig) */ -- 2.4.3

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[PATCH] fw/pci: add Q35 S3 support
by Marcel Apfelbaum 01 Mar '16

01 Mar '16

Following the i440fx example, save the LPC, SMBUS and PCIEXBAR bdfs between OS sleeps and use them to re-configure the corresponding registers. Signed-off-by: Marcel Apfelbaum <marcel(a)redhat.com> --- Hi, The patch was tested with Win7 and Fedora 23 guests. Any comments are welcomed. Thanks, Marcel src/fw/pciinit.c | 73 +++++++++++++++++++++++++++++++++++++++++++------------- 1 file changed, 56 insertions(+), 17 deletions(-) diff --git a/src/fw/pciinit.c b/src/fw/pciinit.c index 5da6cf6..e44bab0 100644 --- a/src/fw/pciinit.c +++ b/src/fw/pciinit.c @@ -149,6 +149,22 @@ static void piix_isa_bridge_setup(struct pci_device *pci, void *arg) dprintf(1, "PIIX3/PIIX4 init: elcr=%02x %02x\n", elcr[0], elcr[1]); } +static void mch_isa_lpc_setup(u16 bdf) +{ + /* pm io base */ + pci_config_writel(bdf, ICH9_LPC_PMBASE, + acpi_pm_base | ICH9_LPC_PMBASE_RTE); + + /* acpi enable, SCI: IRQ9 000b = irq9*/ + pci_config_writeb(bdf, ICH9_LPC_ACPI_CTRL, ICH9_LPC_ACPI_CTRL_ACPI_EN); + + /* set root complex register block BAR */ + pci_config_writel(bdf, ICH9_LPC_RCBA, + ICH9_LPC_RCBA_ADDR | ICH9_LPC_RCBA_EN); +} + +static int ICH9LpcBDF = -1; + /* ICH9 LPC PCI to ISA bridge */ /* PCI_VENDOR_ID_INTEL && PCI_DEVICE_ID_INTEL_ICH9_LPC */ static void mch_isa_bridge_setup(struct pci_device *dev, void *arg) @@ -176,16 +192,10 @@ static void mch_isa_bridge_setup(struct pci_device *dev, void *arg) outb(elcr[1], ICH9_LPC_PORT_ELCR2); dprintf(1, "Q35 LPC init: elcr=%02x %02x\n", elcr[0], elcr[1]); - /* pm io base */ - pci_config_writel(bdf, ICH9_LPC_PMBASE, - acpi_pm_base | ICH9_LPC_PMBASE_RTE); + ICH9LpcBDF = bdf; - /* acpi enable, SCI: IRQ9 000b = irq9*/ - pci_config_writeb(bdf, ICH9_LPC_ACPI_CTRL, ICH9_LPC_ACPI_CTRL_ACPI_EN); + mch_isa_lpc_setup(bdf); - /* set root complex register block BAR */ - pci_config_writel(bdf, ICH9_LPC_RCBA, - ICH9_LPC_RCBA_ADDR | ICH9_LPC_RCBA_EN); e820_add(ICH9_LPC_RCBA_ADDR, 16*1024, E820_RESERVED); acpi_pm1a_cnt = acpi_pm_base + 0x04; @@ -244,11 +254,8 @@ static void piix4_pm_setup(struct pci_device *pci, void *arg) pmtimer_setup(acpi_pm_base + 0x08); } -/* ICH9 SMBUS */ -/* PCI_VENDOR_ID_INTEL && PCI_DEVICE_ID_INTEL_ICH9_SMBUS */ -static void ich9_smbus_setup(struct pci_device *dev, void *arg) +static void ich9_smbus_enable(u16 bdf) { - u16 bdf = dev->bdf; /* map smbus into io space */ pci_config_writel(bdf, ICH9_SMB_SMB_BASE, (acpi_pm_base + 0x100) | PCI_BASE_ADDRESS_SPACE_IO); @@ -257,6 +264,17 @@ static void ich9_smbus_setup(struct pci_device *dev, void *arg) pci_config_writeb(bdf, ICH9_SMB_HOSTC, ICH9_SMB_HOSTC_HST_EN); } +int ICH9SmbusBDF = -1; + +/* ICH9 SMBUS */ +/* PCI_VENDOR_ID_INTEL && PCI_DEVICE_ID_INTEL_ICH9_SMBUS */ +static void ich9_smbus_setup(struct pci_device *dev, void *arg) +{ + ICH9SmbusBDF = dev->bdf; + + ich9_smbus_enable(dev->bdf); +} + static const struct pci_device_id pci_device_tbl[] = { /* PIIX3/PIIX4 PCI to ISA bridge */ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_0, @@ -293,6 +311,9 @@ static const struct pci_device_id pci_device_tbl[] = { PCI_DEVICE_END, }; +static int MCHMmcfgBDF = -1; +static void mch_mmconfig_setup(u16 bdf); + void pci_resume(void) { if (!CONFIG_QEMU) { @@ -302,6 +323,18 @@ void pci_resume(void) if (PiixPmBDF >= 0) { piix4_pm_config_setup(PiixPmBDF); } + + if (ICH9LpcBDF >= 0) { + mch_isa_lpc_setup(ICH9LpcBDF); + } + + if (ICH9SmbusBDF >= 0) { + ich9_smbus_enable(ICH9SmbusBDF); + } + + if(MCHMmcfgBDF >= 0) { + mch_mmconfig_setup(MCHMmcfgBDF); + } } static void pci_bios_init_device(struct pci_device *pci) @@ -388,18 +421,24 @@ static void i440fx_mem_addr_setup(struct pci_device *dev, void *arg) pci_slot_get_irq = piix_pci_slot_get_irq; } -static void mch_mem_addr_setup(struct pci_device *dev, void *arg) +static void mch_mmconfig_setup(u16 bdf) { u64 addr = Q35_HOST_BRIDGE_PCIEXBAR_ADDR; - u32 size = Q35_HOST_BRIDGE_PCIEXBAR_SIZE; - - /* setup mmconfig */ - u16 bdf = dev->bdf; u32 upper = addr >> 32; u32 lower = (addr & 0xffffffff) | Q35_HOST_BRIDGE_PCIEXBAREN; pci_config_writel(bdf, Q35_HOST_BRIDGE_PCIEXBAR, 0); pci_config_writel(bdf, Q35_HOST_BRIDGE_PCIEXBAR + 4, upper); pci_config_writel(bdf, Q35_HOST_BRIDGE_PCIEXBAR, lower); +} + +static void mch_mem_addr_setup(struct pci_device *dev, void *arg) +{ + u64 addr = Q35_HOST_BRIDGE_PCIEXBAR_ADDR; + u32 size = Q35_HOST_BRIDGE_PCIEXBAR_SIZE; + + /* setup mmconfig */ + MCHMmcfgBDF = dev->bdf; + mch_mmconfig_setup(dev->bdf); e820_add(addr, size, E820_RESERVED); /* setup pci i/o window (above mmconfig) */ -- 2.4.3

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Entering protected mode (and back) in option ROM
by Bob Moore 01 Mar '16

01 Mar '16

Hello, I have a need to access 32 bit address space from within a 16 bit option ROM I'm writing. As a test I added code to load the gdt as required to set up 32 bit protected mode but I've encountered a problem. Below are my code and gdt structures. My issue is that when the ljmp is executed the model reboots (this is running on seabios under Qemu). I suspect a GP violation but can't seem to put my finger on it. I tried defining an idt containing a handler that hangs (i.e. jmp .) but was never successful in seeing that work. Does anyone have ideas for why this won't work? Could the Qemu environment restrict this? Thanks. Bob -------------------------------------------- go_to_32bit_protected_mode: cli cld lgdtw %cs:opRom_gdt_32 movl %cr0, %eax orl $1, %eax movl %eax, %cr0 ljmp $MODE32_CS_SEL, $pmode .code32 pmode: movl $MODE32_DS_SEL, %eax movl $16, %eax movw %ax, %ds movw %ax, %es movw %ax, %ss movw %ax, %fs movw %ax, %gs sti ret // 32 bit protected mode GDT descriptors opRom_gdt_32_descs_start: .quad 0x0 .quad 0x00CF9B000000FFFF .quad 0x00CF93000000FFFF .quad 0x00CFFA000000FFFF .quad 0x00CFF2000000FFFF opRom_gdt_32_descs_end: opRom_gdt_32: .word (opRom_gdt_32_descs_end - opRom_gdt_32_descs_start) - 1 .long opRom_gdt_32_descs_start Western Digital Corporation (and its subsidiaries) E-mail Confidentiality Notice & Disclaimer: This e-mail and any files transmitted with it may contain confidential or legally privileged information of WDC and/or its affiliates, and are intended solely for the use of the individual or entity to which they are addressed. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it, is prohibited. If you have received this e-mail in error, please notify the sender immediately and delete the e-mail in its entirety from your system.

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[PATCH 0/2] tpm2 logging
by Kevin O'Connor 29 Feb '16

29 Feb '16

Hi Stefan, What do you think about something like these two patches in place of your last patch 10? Basically using 'struct tcg_pcr_event2_sha1' instead of introducing a new 'struct log_entry'. -Kevin Kevin O'Connor (2): tpm: Unify tpm_fill_hash()/tpm_log_extend_event() and use in BIOS interface tpm: Write logs in TPM 2 format src/std/tcg.h | 35 ++++++++++++++ src/tcgbios.c | 145 +++++++++++++++++++++++++++++++++++++++------------------- 2 files changed, 133 insertions(+), 47 deletions(-) -- 2.5.0

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[PATCH] ahci: set transfer mode according to the capabilities of connected drive
by Gerd Hoffmann 29 Feb '16

29 Feb '16

Use case: cf cards behind sata-ide bridge, which might not support the default transfer mode. Based on a patch by Werner Zeh <werner.zeh(a)siemens.com>, with some minor tweaks applied. Signed-off-by: Gerd Hoffmann <kraxel(a)redhat.com> --- src/hw/ahci.c | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ src/hw/ata.h | 5 +++++ 2 files changed, 63 insertions(+) diff --git a/src/hw/ahci.c b/src/hw/ahci.c index 9310850..ea862f2 100644 --- a/src/hw/ahci.c +++ b/src/hw/ahci.c @@ -515,6 +515,64 @@ static int ahci_port_setup(struct ahci_port_s *port) , ata_extract_version(buffer) , (u32)adjsize, adjprefix); port->prio = bootprio_find_ata_device(ctrl->pci_tmp, pnr, 0); + + s8 multi_dma = -1; + s8 pio_mode = -1; + s8 udma_mode = -1; + // If bit 2 in word 53 is set, udma information is valid in word 88. + if (buffer[53] & 0x04) { + udma_mode = 6; + while ((udma_mode >= 0) && + !((buffer[88] & 0x7f) & ( 1 << udma_mode ))) { + udma_mode--; + } + } + // If bit 1 in word 53 is set, multiword-dma and advanced pio modes + // are available in words 63 and 64. + if (buffer[53] & 0x02) { + pio_mode = 4; + multi_dma = 3; + while ((multi_dma >= 0) && + !((buffer[63] & 0x7) & ( 1 << multi_dma ))) { + multi_dma--; + } + while ((pio_mode >= 3) && + !((buffer[64] & 0x3) & ( 1 << ( pio_mode - 3 ) ))) { + pio_mode--; + } + + } + dprintf(2, "AHCI/%d: supported modes: udma %d, multi-dma %d, pio %d\n", + port->pnr, udma_mode, multi_dma, pio_mode); + + sata_prep_simple(&port->cmd->fis, ATA_CMD_SET_FEATURES); + port->cmd->fis.feature = ATA_SET_FEATRUE_TRANSFER_MODE; + // Select used mode. UDMA first, then Multi-DMA followed by + // advanced PIO modes 3 or 4. If non, set default PIO. + if (udma_mode >= 0) { + dprintf(1, "AHCI/%d: Set transfer mode to UDMA-%d\n", + port->pnr, udma_mode); + port->cmd->fis.sector_count = ATA_TRANSFER_MODE_ULTRA_DMA + | udma_mode; + } else if (multi_dma >= 0) { + dprintf(1, "AHCI/%d: Set transfer mode to Multi-DMA-%d\n", + port->pnr, multi_dma); + port->cmd->fis.sector_count = ATA_TRANSFER_MODE_MULTIWORD_DMA + | multi_dma; + } else if (pio_mode >= 3) { + dprintf(1, "AHCI/%d: Set transfer mode to PIO-%d\n", + port->pnr, pio_mode); + port->cmd->fis.sector_count = ATA_TRANSFER_MODE_PIO_FLOW_CTRL + | pio_mode; + } else { + dprintf(1, "AHCI/%d: Set transfer mode to default PIO\n", + port->pnr); + port->cmd->fis.sector_count = ATA_TRANSFER_MODE_DEFAULT_PIO; + } + rc = ahci_command(port, 1, 0, 0, 0); + if (rc < 0) { + dprintf(1, "AHCI/%d: Set transfer mode failed.\n", port->pnr); + } } else { // found cdrom (atapi) port->drive.type = DTYPE_AHCI_ATAPI; diff --git a/src/hw/ata.h b/src/hw/ata.h index cd14e59..9de2490 100644 --- a/src/hw/ata.h +++ b/src/hw/ata.h @@ -155,4 +155,9 @@ void ata_setup(void); #define ATA_CMD_READ_NATIVE_MAX_ADDRESS 0xF8 #define ATA_CMD_SET_MAX 0xF9 +#define ATA_SET_FEATRUE_TRANSFER_MODE 0x03 +#define ATA_TRANSFER_MODE_ULTRA_DMA 0x40 +#define ATA_TRANSFER_MODE_MULTIWORD_DMA 0x20 +#define ATA_TRANSFER_MODE_PIO_FLOW_CTRL 0x08 +#define ATA_TRANSFER_MODE_DEFAULT_PIO 0x00 #endif // ata.h -- 1.8.3.1

2 2

Re: [SeaBIOS] Serial keyboard support?
by Kevin O'Connor 25 Feb '16

25 Feb '16

On Thu, Feb 25, 2016 at 10:02:34AM -0800, Dustin Brazeau wrote: > As far as I can tell SeaBIOS does not currently support keyboard input over > serial. I was wondering if there is an unofficial patch that could add > support for this before I start looking into implementing it myself. Thanks. For traditional serial ports, sgabios generally fills that role. See the SeaBIOS coreboot wiki for info on sgabios: http://www.coreboot.org/SeaBIOS#Adding_sgabios_support -Kevin

1 0

Serial keyboard support?
by Dustin Brazeau 25 Feb '16

25 Feb '16

As far as I can tell SeaBIOS does not currently support keyboard input over serial. I was wondering if there is an unofficial patch that could add support for this before I start looking into implementing it myself. Thanks.

1 0

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