3 files changed, 49 insertions, 31 deletions

diff --git a/arch/i386/mach-es7000/es7000.h b/arch/i386/mach-es7000/es7000.h
index 70691f0c4ce2..898ed905e119 100644
--- a/arch/i386/mach-es7000/es7000.h
+++ b/arch/i386/mach-es7000/es7000.h
@@ -104,7 +104,8 @@ struct mip_reg {
 #define MIP_SW_APIC             0x1020b
 #define MIP_FUNC(VALUE)         (VALUE & 0xff)
 
-extern int parse_unisys_oem (char *oemptr, int oem_entries);
-extern int find_unisys_acpi_oem_table(unsigned long *oem_addr, int *length);
+extern int parse_unisys_oem (char *oemptr);
+extern int find_unisys_acpi_oem_table(unsigned long *oem_addr);
+extern void setup_unisys ();
 extern int es7000_start_cpu(int cpu, unsigned long eip);
 extern void es7000_sw_apic(void);
diff --git a/arch/i386/mach-es7000/es7000plat.c b/arch/i386/mach-es7000/es7000plat.c
index d5936d500479..2000bdca2fc2 100644
--- a/arch/i386/mach-es7000/es7000plat.c
+++ b/arch/i386/mach-es7000/es7000plat.c
@@ -75,12 +75,29 @@ es7000_rename_gsi(int ioapic, int gsi)
 
 #endif // (CONFIG_X86_IO_APIC) && (CONFIG_ACPI_INTERPRETER || CONFIG_ACPI_BOOT)
 
+void __init
+setup_unisys ()
+{
+        /*
+         * Determine the generation of the ES7000 currently running.
+         *
+         * es7000_plat = 1 if the machine is a 5xx ES7000 box
+         * es7000_plat = 2 if the machine is a x86_64 ES7000 box
+         *
+         */
+        if (!(boot_cpu_data.x86 <= 15 && boot_cpu_data.x86_model <= 2))
+                es7000_plat = 2;
+        else
+                es7000_plat = 1;
+        ioapic_renumber_irq = es7000_rename_gsi;
+}
+
 /*
  * Parse the OEM Table
  */
 
 int __init
-parse_unisys_oem (char *oemptr, int oem_entries)
+parse_unisys_oem (char *oemptr)
 {
         int                     i;
         int                     success = 0;
@@ -95,7 +112,7 @@ parse_unisys_oem (char *oemptr, int oem_entries)
 
         tp += 8;
 
-        for (i=0; i <= oem_entries; i++) {
+        for (i=0; i <= 6; i++) {
                 type = *tp++;
                 size = *tp++;
                 tp -= 2;
@@ -130,34 +147,18 @@ parse_unisys_oem (char *oemptr, int oem_entries)
                 default:
                         break;
                 }
-                if (i == 6) break;
                 tp += size;
         }
 
         if (success < 2) {
                 es7000_plat = 0;
-        } else {
-                printk("\nEnabling ES7000 specific features...\n");
-                /*
-                 * Determine the generation of the ES7000 currently running.
-                 *
-                 * es7000_plat = 0 if the machine is NOT a Unisys ES7000 box
-                 * es7000_plat = 1 if the machine is a 5xx ES7000 box
-                 * es7000_plat = 2 if the machine is a x86_64 ES7000 box
-                 *
-                 */
-                if (!(boot_cpu_data.x86 <= 15 && boot_cpu_data.x86_model <= 2))
-                        es7000_plat = 2;
-                else
-                        es7000_plat = 1;
-
-                ioapic_renumber_irq = es7000_rename_gsi;
-        }
+        } else
+                setup_unisys();
         return es7000_plat;
 }
 
 int __init
-find_unisys_acpi_oem_table(unsigned long *oem_addr, int *length)
+find_unisys_acpi_oem_table(unsigned long *oem_addr)
 {
         struct acpi_table_rsdp          *rsdp = NULL;
         unsigned long                   rsdp_phys = 0;
@@ -201,13 +202,11 @@ find_unisys_acpi_oem_table(unsigned long *oem_addr, int *length)
                                 acpi_table_print(header, sdt.entry[i].pa);
                                 t = (struct oem_table *) __acpi_map_table(sdt.entry[i].pa, header->length);
                                 addr = (void *) __acpi_map_table(t->OEMTableAddr, t->OEMTableSize);
-                                *length = header->length;
                                 *oem_addr = (unsigned long) addr;
                                 return 0;
                         }
                 }
         }
-        Dprintk("ES7000: did not find Unisys ACPI OEM table!\n");
         return -1;
 }
 
diff --git a/include/asm-i386/mach-es7000/mach_mpparse.h b/include/asm-i386/mach-es7000/mach_mpparse.h
index 85809e0898d7..28a84f6185a7 100644
--- a/include/asm-i386/mach-es7000/mach_mpparse.h
+++ b/include/asm-i386/mach-es7000/mach_mpparse.h
@@ -1,6 +1,8 @@
 #ifndef __ASM_MACH_MPPARSE_H
 #define __ASM_MACH_MPPARSE_H
 
+#include <linux/acpi.h>
+
 static inline void mpc_oem_bus_info(struct mpc_config_bus *m, char *name, 
                                 struct mpc_config_translation *translation)
 {
@@ -12,8 +14,9 @@ static inline void mpc_oem_pci_bus(struct mpc_config_bus *m,
 {
 }
 
-extern int parse_unisys_oem (char *oemptr, int oem_entries);
-extern int find_unisys_acpi_oem_table(unsigned long *oem_addr, int *length);
+extern int parse_unisys_oem (char *oemptr);
+extern int find_unisys_acpi_oem_table(unsigned long *oem_addr);
+extern void setup_unisys();
 
 static inline int mps_oem_check(struct mp_config_table *mpc, char *oem,
                 char *productid)
@@ -22,18 +25,33 @@ static inline int mps_oem_check(struct mp_config_table *mpc, char *oem,
                 struct mp_config_oemtable *oem_table = 
                         (struct mp_config_oemtable *)mpc->mpc_oemptr;
                 if (!strncmp(oem, "UNISYS", 6))
-                        return parse_unisys_oem((char *)oem_table, oem_table->oem_length);
+                        return parse_unisys_oem((char *)oem_table);
         }
         return 0;
 }
 
+static inline int es7000_check_dsdt()
+{
+        struct acpi_table_header *header = NULL;
+        if(!acpi_get_table_header_early(ACPI_DSDT, &header))
+                acpi_table_print(header, 0);
+        if (!strncmp(header->oem_id, "UNISYS", 6))
+                return 1;
+        return 0;
+}
+
 /* Hook from generic ACPI tables.c */
 static inline int acpi_madt_oem_check(char *oem_id, char *oem_table_id)
 {
         unsigned long oem_addr; 
-        int oem_entries;
-        if (!find_unisys_acpi_oem_table(&oem_addr, &oem_entries))
-                return parse_unisys_oem((char *)oem_addr, oem_entries);
+        if (!find_unisys_acpi_oem_table(&oem_addr)) {
+                if (es7000_check_dsdt())
+                        return parse_unisys_oem((char *)oem_addr);
+                else {
+                        setup_unisys();
+                        return 1;
+                }
+        }
         return 0;
 }