diff options
| author | Patrick Georgi <patrick.georgi@coresystems.de> | 2010-06-25 13:43:22 +0000 |
|---|---|---|
| committer | Patrick Georgi <patrick.georgi@coresystems.de> | 2010-06-25 13:43:22 +0000 |
| commit | ab272664ee24c2e497186b4ed3f94e5910e8eac9 (patch) | |
| tree | 025c4d043ab3524bb96ee70253b0320ad3f5a732 /src/arch/i386/boot | |
| parent | 43c970f56a1dbba72543e9e1cd007726ad31c626 (diff) | |
Add new function to create all mptable entries for buses by
reading that information from the device tree.
Use this function on kontron/986lcd-m
Signed-off-by: Patrick Georgi <patrick.georgi@coresystems.de>
Acked-by: Peter Stuge <peter@stuge.se>
git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5647 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
Diffstat (limited to 'src/arch/i386/boot')
| -rw-r--r-- | src/arch/i386/boot/mpspec.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/arch/i386/boot/mpspec.c b/src/arch/i386/boot/mpspec.c index 57a10ac670..031f326b64 100644 --- a/src/arch/i386/boot/mpspec.c +++ b/src/arch/i386/boot/mpspec.c @@ -323,3 +323,37 @@ void mptable_add_isa_interrupts(struct mp_config_table *mc, unsigned long bus_is smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_EDGE|MP_IRQ_POLARITY_HIGH, bus_isa, 0xe, apicid, 0xe); smp_write_intsrc(mc, mp_INT, MP_IRQ_TRIGGER_EDGE|MP_IRQ_POLARITY_HIGH, bus_isa, 0xf, apicid, 0xf); } + +void mptable_write_buses(struct mp_config_table *mc, int *max_pci_bus, int *isa_bus) { + int dummy, i, highest; + char buses[256]; + struct device *dev; + + if (!max_pci_bus) max_pci_bus = &dummy; + if (!isa_bus) isa_bus = &dummy; + + *max_pci_bus = 0; + highest = 0; + memset(buses, 0, sizeof(buses)); + + for (dev = all_devices; dev; dev = dev->next) { + struct bus *bus; + for (bus = dev->link_list; bus; bus = bus->next) { + if (bus->secondary > 255) { + printk(BIOS_ERR, "A bus claims to have a bus ID > 255?!? Aborting"); + return; + } + buses[bus->secondary] = 1; + if (highest < bus->secondary) highest = bus->secondary; + } + } + for (i=0; i <= highest; i++) { + if (buses[i]) { + smp_write_bus(mc, i, "PCI "); + *max_pci_bus = i; + } + } + *isa_bus = *max_pci_bus + 1; + smp_write_bus(mc, *isa_bus, "ISA "); +} + |