diff options
Diffstat (limited to 'src/dev-i440fx.c')
| -rw-r--r-- | src/dev-i440fx.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/src/dev-i440fx.c b/src/dev-i440fx.c new file mode 100644 index 00000000..864a52c1 --- /dev/null +++ b/src/dev-i440fx.c @@ -0,0 +1,57 @@ +// initialization function which are specific to i440fx chipset +// +// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net> +// Copyright (C) 2006 Fabrice Bellard +// +// Copyright (C) 2010 Isaku Yamahata <yamahata at valinux co jp> +// Split out from pciinit.c +// +// This file may be distributed under the terms of the GNU LGPLv3 license. +// + +#include "config.h" // CONFIG_DEBUG_LEVEL +#include "util.h" // dprintf +#include "ioport.h" // outb +#include "pci.h" // pci_config_writeb +#include "pci_regs.h" // PCI_INTERRUPT_LINE +#include "dev-i440fx.h" + +/* PIIX3/PIIX4 PCI to ISA bridge */ +void piix_isa_bridge_init(u16 bdf, void *arg) +{ + int i, irq; + u8 elcr[2]; + + elcr[0] = 0x00; + elcr[1] = 0x00; + for (i = 0; i < 4; i++) { + irq = pci_irqs[i]; + /* set to trigger level */ + elcr[irq >> 3] |= (1 << (irq & 7)); + /* activate irq remapping in PIIX */ + pci_config_writeb(bdf, 0x60 + i, irq); + } + outb(elcr[0], 0x4d0); + outb(elcr[1], 0x4d1); + dprintf(1, "PIIX3/PIIX4 init: elcr=%02x %02x\n", elcr[0], elcr[1]); +} + +/* PIIX3/PIIX4 IDE */ +void piix_ide_init(u16 bdf, void *arg) +{ + pci_config_writew(bdf, 0x40, 0x8000); // enable IDE0 + pci_config_writew(bdf, 0x42, 0x8000); // enable IDE1 + pci_bios_allocate_regions(bdf, NULL); +} + +/* PIIX4 Power Management device (for ACPI) */ +void piix4_pm_init(u16 bdf, void *arg) +{ + // acpi sci is hardwired to 9 + pci_config_writeb(bdf, PCI_INTERRUPT_LINE, 9); + + pci_config_writel(bdf, 0x40, PORT_ACPI_PM_BASE | 1); + pci_config_writeb(bdf, 0x80, 0x01); /* enable PM io space */ + pci_config_writel(bdf, 0x90, PORT_SMB_BASE | 1); + pci_config_writeb(bdf, 0xd2, 0x09); /* enable SMBus io space */ +} |