seabios.patch

--- a/src/fw/acpi.c
+++ b/src/fw/acpi.c
@@ -23,6 +23,11 @@ struct srat_memory_affinity
 
 #include "src/fw/acpi-dsdt.hex"
 
+#define CONFIG_OEM_SLIC
+#ifdef CONFIG_OEM_SLIC
+#include "acpi-slic.hex"
+#endif
+
 static void
 build_header(struct acpi_table_header *h, u32 sig, int len, u8 rev)
 {
@@ -35,6 +40,10 @@ build_header(struct acpi_table_header *h, u32 sig, int len, u8 rev)
     h->oem_revision = cpu_to_le32(1);
     memcpy(h->asl_compiler_id, BUILD_APPNAME4, 4);
     h->asl_compiler_revision = cpu_to_le32(1);
+    #ifdef CONFIG_OEM_SLIC
+    if (sig == RSDT_SIGNATURE) // only RSDT is checked by win7 & vista
+        memcpy(h->oem_id, ((struct acpi_table_header*)SLIC)->oem_id, 14);
+    #endif
     h->checksum -= checksum(h, len);
 }
 
@@ -624,6 +633,18 @@ acpi_bios_init(void)
     if (pci->device == PCI_DEVICE_ID_INTEL_ICH9_LPC)
         ACPI_INIT_TABLE(build_mcfg_q35());
 
+    #ifdef CONFIG_OEM_SLIC
+    {
+        void *buf = malloc_high(sizeof(SLIC));
+        if (!buf)
+            warn_noalloc();
+        else {
+            memcpy(buf, SLIC, sizeof(SLIC));
+            ACPI_INIT_TABLE(buf);
+        }
+    }
+    #endif
+
     struct romfile_s *file = NULL;
     for (;;) {
         file = romfile_findprefix("acpi/", file);