1 files changed, 18 insertions, 0 deletions

diff --git a/arch/ia64/sn/kernel/setup.c b/arch/ia64/sn/kernel/setup.c
index 7a2d824c5ce3..1d009f93244d 100644
--- a/arch/ia64/sn/kernel/setup.c
+++ b/arch/ia64/sn/kernel/setup.c
@@ -388,6 +388,14 @@ void __init sn_setup(char **cmdline_p)
         ia64_sn_plat_set_error_handling_features();     // obsolete
         ia64_sn_set_os_feature(OSF_MCA_SLV_TO_OS_INIT_SLV);
         ia64_sn_set_os_feature(OSF_FEAT_LOG_SBES);
+        /*
+         * Note: The calls to notify the PROM of ACPI and PCI Segment
+         *       support must be done prior to acpi_load_tables(), as
+         *       an ACPI capable PROM will rebuild the DSDT as result
+         *       of the call.
+         */
+        ia64_sn_set_os_feature(OSF_PCISEGMENT_ENABLE);
+        ia64_sn_set_os_feature(OSF_ACPI_ENABLE);
 
 
 #if defined(CONFIG_VT) && defined(CONFIG_VGA_CONSOLE)
@@ -413,6 +421,16 @@ void __init sn_setup(char **cmdline_p)
         if (! vga_console_membase)
                 sn_scan_pcdp();
 
+        /*
+         *      Setup legacy IO space.
+         *      vga_console_iobase maps to PCI IO Space address 0 on the
+         *      bus containing the VGA console.
+         */
+        if (vga_console_iobase) {
+                io_space[0].mmio_base = vga_console_iobase;
+                io_space[0].sparse = 0;
+        }
+
         if (vga_console_membase) {
                 /* usable vga ... make tty0 the preferred default console */
                 if (!strstr(*cmdline_p, "console="))