--- /dev/null
+// Coreboot interface support.
+//
+// Copyright (C) 2008,2009 Kevin O'Connor <kevin@koconnor.net>
+//
+// This file may be distributed under the terms of the GNU LGPLv3 license.
+
+#include "config.h" // CONFIG_*
+#include "util.h" // dprintf
+#include "pci.h" // struct pir_header
+#include "acpi.h" // struct rsdp_descriptor
+#include "mptable.h" // MPTABLE_SIGNATURE
+#include "smbios.h" // struct smbios_entry_point
+
+void
+copy_pir(void *pos)
+{
+ struct pir_header *p = pos;
+ if (p->signature != PIR_SIGNATURE)
+ return;
+ if (PirOffset)
+ return;
+ if (p->size < sizeof(*p))
+ return;
+ if (checksum(pos, p->size) != 0)
+ return;
+ void *newpos = malloc_fseg(p->size);
+ if (!newpos) {
+ warn_noalloc();
+ return;
+ }
+ dprintf(1, "Copying PIR from %p to %p\n", pos, newpos);
+ memcpy(newpos, pos, p->size);
+ PirOffset = (u32)newpos - BUILD_BIOS_ADDR;
+}
+
+void
+copy_mptable(void *pos)
+{
+ struct mptable_floating_s *p = pos;
+ if (p->signature != MPTABLE_SIGNATURE)
+ return;
+ if (!p->physaddr)
+ return;
+ if (checksum(pos, sizeof(*p)) != 0)
+ return;
+ u32 length = p->length * 16;
+ u16 mpclength = ((struct mptable_config_s *)p->physaddr)->length;
+ struct mptable_floating_s *newpos = malloc_fseg(length + mpclength);
+ if (!newpos) {
+ warn_noalloc();
+ return;
+ }
+ dprintf(1, "Copying MPTABLE from %p/%x to %p\n", pos, p->physaddr, newpos);
+ memcpy(newpos, pos, length);
+ newpos->physaddr = (u32)newpos + length;
+ newpos->checksum -= checksum(newpos, sizeof(*newpos));
+ memcpy((void*)newpos + length, (void*)p->physaddr, mpclength);
+}
+
+void
+copy_acpi_rsdp(void *pos)
+{
+ if (RsdpAddr)
+ return;
+ struct rsdp_descriptor *p = pos;
+ if (p->signature != RSDP_SIGNATURE)
+ return;
+ u32 length = 20;
+ if (checksum(pos, length) != 0)
+ return;
+ if (p->revision > 1) {
+ length = p->length;
+ if (checksum(pos, length) != 0)
+ return;
+ }
+ void *newpos = malloc_fseg(length);
+ if (!newpos) {
+ warn_noalloc();
+ return;
+ }
+ dprintf(1, "Copying ACPI RSDP from %p to %p\n", pos, newpos);
+ memcpy(newpos, pos, length);
+ RsdpAddr = newpos;
+}
+
+void
+copy_smbios(void *pos)
+{
+ if (SMBiosAddr)
+ return;
+ struct smbios_entry_point *p = pos;
+ if (memcmp(p->anchor_string, "_SM_", 4))
+ return;
+ if (checksum(pos, 0x10) != 0)
+ return;
+ if (memcmp(p->intermediate_anchor_string, "_DMI_", 5))
+ return;
+ if (checksum(pos+0x10, p->length-0x10) != 0)
+ return;
+ struct smbios_entry_point *newpos = malloc_fseg(p->length);
+ if (!newpos) {
+ warn_noalloc();
+ return;
+ }
+ dprintf(1, "Copying SMBIOS entry point from %p to %p\n", pos, newpos);
+ memcpy(newpos, pos, p->length);
+ SMBiosAddr = newpos;
+}