[RFC PATCH v4] fw/pci: Add support for mapping Intel IGD via QEMU
by Alex Williamson
QEMU provides two fw_cfg files to support IGD. The first holds the
OpRegion data which holds the Video BIOS Table (VBT). This needs to
be copied into reserved memory and the address stored in the ASL
Storage register of the device at 0xFC offset in PCI config space.
The OpRegion is generally 8KB. This file is named "etc/igd-opregion".
The second file tells us the required size of the stolen memory space
for the device. This is a dummy file, it has no backing so we only
allocate the space without copying anything into it. This space
requires 1MB alignment and is generally either 1MB or 2MB, depending
on the hardware config. If the user has opted in QEMU to expose
additional stolen memory beyond the GTT (GGMS), the GMS may add an
additional 32MB to 512MB. The base address of the reserved memory
allocated for this is written back to the Base Data of Stolen Memory
register (BDSM) at PCI config offset 0x5C on the device. This file is
named "etc/igd-bdsm".
Signed-off-by: Alex Williamson <alex.williamson(a)redhat.com>
---
v4: Back to a single patch thanks to Kevin's suggestion to use
memalign_tmphigh() for larger allocations. Now creating
reserved space for stolen memory and writing the value to
the BDSM register is queued off the existence of a fw_cfg
file, just like the OpRegion. The only difference is that
we don't copy the contents, just use the meta data.
src/fw/pciinit.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 47 insertions(+)
diff --git a/src/fw/pciinit.c b/src/fw/pciinit.c
index 0ed5dfb..dc2e433 100644
--- a/src/fw/pciinit.c
+++ b/src/fw/pciinit.c
@@ -269,6 +269,49 @@ static void ich9_smbus_setup(struct pci_device *dev, void *arg)
pci_config_writeb(bdf, ICH9_SMB_HOSTC, ICH9_SMB_HOSTC_HST_EN);
}
+static void intel_igd_setup(struct pci_device *dev, void *arg)
+{
+ struct romfile_s *opregion = romfile_find("etc/igd-opregion");
+ struct romfile_s *bdsm = romfile_find("etc/igd-bdsm");
+ void *addr;
+ u16 bdf = dev->bdf;
+
+ if (opregion && opregion->size) {
+ addr = memalign_high(PAGE_SIZE, opregion->size);
+ if (!addr) {
+ warn_noalloc();
+ return;
+ }
+
+ if (opregion->copy(opregion, addr, opregion->size) < 0) {
+ free(addr);
+ return;
+ }
+
+ pci_config_writel(bdf, 0xFC, cpu_to_le32((u32)addr));
+
+ dprintf(1, "Intel IGD OpRegion enabled at 0x%08x, size %dKB, dev "
+ "%02x:%02x.%x\n", (u32)addr, opregion->size >> 10,
+ pci_bdf_to_bus(bdf), pci_bdf_to_dev(bdf), pci_bdf_to_fn(bdf));
+ }
+
+ if (bdsm && bdsm->size) {
+ addr = memalign_tmphigh(1024 * 1024, bdsm->size);
+ if (!addr) {
+ warn_noalloc();
+ return;
+ }
+
+ e820_add((u32)addr, bdsm->size, E820_RESERVED);
+
+ pci_config_writel(bdf, 0x5C, cpu_to_le32((u32)addr));
+
+ dprintf(1, "Intel IGD BDSM enabled at 0x%08x, size %dMB, dev "
+ "%02x:%02x.%x\n", (u32)addr, bdsm->size >> 20,
+ pci_bdf_to_bus(bdf), pci_bdf_to_dev(bdf), pci_bdf_to_fn(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,
@@ -302,6 +345,10 @@ static const struct pci_device_id pci_device_tbl[] = {
PCI_DEVICE_CLASS(PCI_VENDOR_ID_APPLE, 0x0017, 0xff00, apple_macio_setup),
PCI_DEVICE_CLASS(PCI_VENDOR_ID_APPLE, 0x0022, 0xff00, apple_macio_setup),
+ /* Intel IGD OpRegion setup */
+ PCI_DEVICE_CLASS(PCI_VENDOR_ID_INTEL, PCI_ANY_ID, PCI_CLASS_DISPLAY_VGA,
+ intel_igd_setup),
+
PCI_DEVICE_END,
};
2 years, 10 months
[PATCH] fw/pci: add Q35 S3 support
by Marcel Apfelbaum
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
3 years
Entering protected mode (and back) in option ROM
by Bob Moore
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
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3 years
[PATCH 0/2] tpm2 logging
by Kevin O'Connor
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
3 years
[PATCH] ahci: set transfer mode according to the capabilities of connected drive
by Gerd Hoffmann
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
3 years
Re: [SeaBIOS] Serial keyboard support?
by Kevin O'Connor
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
3 years
Serial keyboard support?
by Dustin Brazeau
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.
3 years
[PATCH] ld: fix .text section address alignment
by Roger Pau Monne
According to the output from readelf, the .text section should be aligned to
16:
Section Headers:
[Nr] Name Type Addr Off Size ES Flg Lk Inf Al
[ 0] (null) NULL 00000000 000000 000000 00 0 0 0
[ 1] .text PROGBITS 000de300 000300 021d00 00 AX 0 0 16
[...]
This however doesn't seem to be enforced when the relocations are generated.
The following patch tries to address this by making sure the space used for
the relocations it also aligned to the same value as the .text section.
Signed-off-by: Roger Pau Monné <roger.pau(a)citrix.com>
Reported by: Ed Maste <emaste(a)FreeBSD.org>
---
Cc: Kevin O'Connor <kevin(a)koconnor.net>
---
scripts/layoutrom.py | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/layoutrom.py b/scripts/layoutrom.py
index b976fb0..5534a9e 100755
--- a/scripts/layoutrom.py
+++ b/scripts/layoutrom.py
@@ -397,7 +397,7 @@ def writeLinkerScripts(li, out16, out32seg, out32flat):
+ strRelocs("_reloc_rel", "code32init_start", relrelocs)
+ strRelocs("_reloc_init", "code32flat_start", initrelocs))
numrelocs = len(absrelocs + relrelocs + initrelocs)
- sec32all_start -= numrelocs * 4
+ sec32all_start -= alignpos(numrelocs * 4, li.sec32low_align)
filesections32flat = getSectionsFileid(li.sections, '32flat')
out = outXRefs([], exportsyms=li.varlowsyms
, forcedelta=li.final_sec32low_start-li.sec32low_start)
--
2.5.4 (Apple Git-61)
3 years
Re: [SeaBIOS] AHCI: Set transfer mode according to the capabilities of connected drive
by Kevin O'Connor
On Mon, Feb 15, 2016 at 12:00:48PM +0000, Zeh, Werner wrote:
> Hi Kevin.
>
> We had some issues with some connected AHCI devices in SeaBIOS. We
> have connected some CF-Cards by using a simple SATA<->IDE bridge to
> the mainboard and in some cases, the drive (which is the CF-card)
> was not recognized correctly. After some deeper analysis we found
> that SeaBIOS does not set up the transfer rate which is used to
> communicate to the drive. The supported transfer rate can be found
> in the data structure which is delivered by IDENTIFY_DEVICE command.
>
> So in our error cases the default transfer rate was too high and
> therefore data error has occurred. I have attached a patch which
> will deal with this case on AHCI controllers. Maybe you can push
> this patch to mainline or at least have a look at it.
>
> Up to now I have verified the function of this patch with the latest
> master branch of SeaBIOS and a Broadwell-DE CPU. I have used PIO4,
> default PIO, Multiword-DMA2 and several Ultra-DMA CF-cards to ensure
> that all three paths work properly.
>
> BTW: I am not that familiar with code style in SeaBIOS. If I made
> some formal mistakes, feel free to correct them.
Thanks. I'm not that familiar with the AHCI internals. Gerd, would
you be able to review?
-Kevin
3 years, 1 month
Error while compiling Seabios for Arch Linux ARM
by Xavier de Rauville
Greetings
I am currently trying to compile Seabios for Arch Linux ARM and I've
encountered an error during the compilation that appears to be caused by
a misconfiguration in the file downloaded from here:
http://code.coreboot.org/p/seabios/downloads/get/seabios-1.9.0.tar.gz
I have attached a log containing the entire stdout and stderr stream
output for Arch Linux's makepkg command but I think these might be the
only lines of interest:
Compile checking out/src/misc.o
cc -Iout/ -Isrc -Os -MD -g -Wall -Wno-strict-aliasing
-Wold-style-definition -Wtype-limits -m32 -march=i386 -mregparm=3
-mpreferred-stack-boundary=2 -minline-all-stringops -fomit-frame-pointer
-freg-struct-return -ffreestanding -fno-delete-null-pointer-checks
-ffunction-sections -fdata-sections -fno-common -fno-merge-constants
-fno-stack-protector -fstack-check=no -DMODE16=0 -DMODESEGMENT=0 -c
src/misc.c -o out/src/misc.o
cc: error: unrecognized argument in option '-march=i386'
cc: note: valid arguments to '-march=' are: armv2 armv2a armv3 armv3m
armv4 armv4t armv5 armv5e armv5t armv5te armv6 armv6-m armv6j armv6k
armv6s-m armv6t2 armv6z armv6zk armv7 armv7-a armv7-m armv7-r armv7e-m
armv7ve armv8-a armv8-a+crc iwmmxt iwmmxt2 native
cc: error: unrecognized command line option '-m32'
cc: error: unrecognized command line option '-mregparm=3'
cc: error: unrecognized command line option '-mpreferred-stack-boundary=2'
cc: error: unrecognized command line option '-minline-all-stringops'
Makefile:133: recipe for target 'out/src/misc.o' failed
The files Arch Linux uses to compile Seabios can be found here if
needed:
https://projects.archlinux.org/svntogit/packages.git/tree/trunk?h=package...
Can anyone help me get this error fixed? If a developer reads this and
there is a bug in the code, would it be possible to fix it? Help will be
greatly appreciated.
Kind regards
Xavier de Rauville
3 years, 1 month
