Author: uwe Date: 2007-06-19 09:33:39 +0200 (Tue, 19 Jun 2007) New Revision: 2725
Modified: trunk/LinuxBIOSv2/src/mainboard/asus/mew-vm/Options.lb trunk/LinuxBIOSv2/src/northbridge/intel/i82810/raminit.c Log: This patch fixes up a couple mistakes I made with the i82810 and mew-vw to make the system boot to a command line.
This patch comments out the code to set up the vga framebuffer to allow the system to boot, without this fix the system hangs during elfboot.
The only line that is absolutely necessary to change is the SMRAM setup, however I've commented out all vga setup to make it very obvious to both the kernel/payload and anyone looking at the code that vga isn't currently working. This setup might also be better handled in northbridge.c, if it doesn't need to be done before ram init, yet another reason to comment it all. In the future, LinuxBIOS needs to be told that the graphics memory area, 1mb or 512kb (at the user or developer's option), is reserved for the onchip vga, but I'm not sure if it's taken at the top or bottom of the memory, yet. LB may also need to set a base address for the AGP aperture and/or be told that range is reserved as well, whether this was originally the job of the system bios or vga bios is still a mystery. It also corrects the number of entries in irq_tables.c, without this fix the kernel would probably complain and hang due to unmapped IRQs.
Signed-off-by: Corey Osgood corey.osgood@gmail.com Acked-by: Uwe Hermann uwe@hermann-uwe.de
Modified: trunk/LinuxBIOSv2/src/mainboard/asus/mew-vm/Options.lb =================================================================== --- trunk/LinuxBIOSv2/src/mainboard/asus/mew-vm/Options.lb 2007-06-14 21:45:21 UTC (rev 2724) +++ trunk/LinuxBIOSv2/src/mainboard/asus/mew-vm/Options.lb 2007-06-19 07:33:39 UTC (rev 2725) @@ -67,7 +67,7 @@ ## Build code to export a programmable irq routing table ## default HAVE_PIRQ_TABLE = 1 -default IRQ_SLOT_COUNT = 4 +default IRQ_SLOT_COUNT = 11
## ## Build code to export a CMOS option table
Modified: trunk/LinuxBIOSv2/src/northbridge/intel/i82810/raminit.c =================================================================== --- trunk/LinuxBIOSv2/src/northbridge/intel/i82810/raminit.c 2007-06-14 21:45:21 UTC (rev 2724) +++ trunk/LinuxBIOSv2/src/northbridge/intel/i82810/raminit.c 2007-06-19 07:33:39 UTC (rev 2725) @@ -69,7 +69,6 @@ static void do_ram_command(const struct mem_controller *ctrl, uint32_t command, uint32_t addr_offset, uint32_t row_offset) { - int i; uint8_t reg;
/* TODO: Support for multiple DIMMs. */ @@ -242,22 +241,25 @@ */
/* Ideally, this should be R/W for as many ranges as possible. */ - pci_write_config8(ctrl->d0, PAM, 0x00); + pci_write_config8(ctrl->d0, PAM, 0xff);
+ /* Enabling the VGA Framebuffer currently screws up the rest of the boot. + * Disable for now */ + /* Enable 1MB framebuffer. */ - pci_write_config8(ctrl->d0, SMRAM, 0xC0); + //pci_write_config8(ctrl->d0, SMRAM, 0xC0);
- val = pci_read_config16(ctrl->d0, MISSC); + //val = pci_read_config16(ctrl->d0, MISSC); /* Preserve reserved bits. */ - val &= 0xff06; + //val &= 0xff06; /* Set graphics cache window to 32MB, no power throttling. */ - val |= 0x0001; - pci_write_config16(ctrl->d0, MISSC, val); + //val |= 0x0001; + //pci_write_config16(ctrl->d0, MISSC, val);
- val = pci_read_config8(ctrl->d0, MISSC2); + //val = pci_read_config8(ctrl->d0, MISSC2); /* Enable graphics palettes and clock gating (not optional!) */ - val |= 0x06; - pci_write_config8(ctrl->d0, MISSC2, val); + //val |= 0x06; + //pci_write_config8(ctrl->d0, MISSC2, val); }
/**