SeaBIOS March 2013

seabios@seabios.org

41 participants
83 discussions

i915 status on x60.
by Denis 'GNUtoo' Carikli 03 Mar '13

03 Mar '13

Hi, I've been working with ron minnich on trying to avoid the non-free vga option rom for the i915. Personally I target the x60 for now. After porting to the x60 I'll probably try to find a T60 with an intel card in order to port to it. Right now, I've got the screen that powers on, and even backlight if I add the option rom generated by SeaBIOS(it freezes after it though), however I've only a strange pattern on the screen...and my goal is to have graphics in SeaBIOS and grub(most important),by whatever mean,but without using the non-free i915 option rom. The code is here: http://review.coreboot.org/#/c/2559/ And the SeaBIOS code will also follow. As stated it isn't usable yet so it shouldn't be merged. Denis.

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Re: [SeaBIOS] [coreboot] [PATCH 1/2] Add i915 VGA test Driver.
by Denis 'GNUtoo' Carikli 02 Mar '13

02 Mar '13

On Fri, 1 Mar 2013 19:41:16 -0800 ron minnich <rminnich(a)gmail.com> wrote: > Assuming this stuff is set up in coreboot, it should not be necessary > to bring it into seabios, so I'm not sure what's going on here. > > ron > I was ask by Paul Menzel to do it(for the purpose of documentation): http://review.coreboot.org/#/c/2559/1//COMMIT_MSG Denis.

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[PATCH] pci vga: Support VGA behind bridges
by Alex Williamson 01 Mar '13

01 Mar '13

We currently expect to find VGA devices on the root bus but we will also support them below bridges iff the VGA routing across the bridges is pre-configured. This patch maintains that behavior, but also enables SeaBIOS to enable VGA routing to the first VGA class device it finds when there is no preconfigured device. This allows us to support VGA devices behind root ports and bridges without special setup from QEMU. Signed-off-by: Alex Williamson <alex.williamson(a)redhat.com> --- src/optionroms.c | 46 ++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 40 insertions(+), 6 deletions(-) diff --git a/src/optionroms.c b/src/optionroms.c index caa2151..1c2a714 100644 --- a/src/optionroms.c +++ b/src/optionroms.c @@ -439,13 +439,47 @@ vgarom_setup(void) memset((void*)BUILD_ROM_START, 0, rom_get_max() - BUILD_ROM_START); // Find and deploy PCI VGA rom. - struct pci_device *pci; + struct pci_device *pci, *pci_vga = NULL; + // Search for devices already enabled foreachpci(pci) { - if (!is_pci_vga(pci)) - continue; - vgahook_setup(pci); - init_pcirom(pci, 1, NULL); - break; + if (is_pci_vga(pci)) { + pci_vga = pci; + break; + } + } + + // Find and enable the first VGA device + if (!pci_vga && (pci = pci_find_class(PCI_CLASS_DISPLAY_VGA)) != NULL) { + dprintf(4, "Enabling device %02x:%02x.%x for primary VGA\n", + pci_bdf_to_bus(pci->bdf), pci_bdf_to_dev(pci->bdf), + pci_bdf_to_fn(pci->bdf)); + + u16 cmd = pci_config_readw(pci->bdf, PCI_COMMAND); + cmd |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY; + pci_config_writew(pci->bdf, PCI_COMMAND, cmd); + + pci_vga = pci; + + while (pci->parent) { + pci = pci->parent; + + dprintf(4, "Setting VGA enable for bridge %02x:%02x.%x\n", + pci_bdf_to_bus(pci->bdf), pci_bdf_to_dev(pci->bdf), + pci_bdf_to_fn(pci->bdf)); + + u8 ctrl = pci_config_readb(pci->bdf, PCI_BRIDGE_CONTROL); + ctrl |= PCI_BRIDGE_CTL_VGA; + pci_config_writeb(pci->bdf, PCI_BRIDGE_CONTROL, ctrl); + + u16 cmd = pci_config_readw(pci->bdf, PCI_COMMAND); + cmd |= PCI_COMMAND_IO | PCI_COMMAND_MEMORY; + pci_config_writew(pci->bdf, PCI_COMMAND, cmd); + } + } + + if (pci_vga) { + vgahook_setup(pci_vga); + init_pcirom(pci_vga, 1, NULL); } // Find and deploy CBFS vga-style roms not associated with a device.

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SeaBIOS March 2013