1 files changed, 49 insertions, 0 deletions

diff --git a/arch/i386/mach-visws/setup.c b/arch/i386/mach-visws/setup.c
index 07fac7e749c7..8a9e1a6f745d 100644
--- a/arch/i386/mach-visws/setup.c
+++ b/arch/i386/mach-visws/setup.c
@@ -10,6 +10,8 @@
 #include <asm/fixmap.h>
 #include <asm/arch_hooks.h>
 #include <asm/io.h>
+#include <asm/e820.h>
+#include <asm/setup.h>
 #include "cobalt.h"
 #include "piix4.h"
 
@@ -133,3 +135,50 @@ void __init time_init_hook(void)
         /* Wire cpu IDT entry to s/w handler (and Cobalt APIC to IDT) */
         setup_irq(0, &irq0);
 }
+
+/* Hook for machine specific memory setup. */
+
+#define MB (1024 * 1024)
+
+static unsigned long sgivwfb_mem_phys;
+static unsigned long sgivwfb_mem_size;
+
+long long mem_size __initdata = 0;
+
+char * __init machine_specific_memory_setup(void)
+{
+        long long gfx_mem_size = 8 * MB;
+
+        mem_size = ALT_MEM_K;
+
+        if (!mem_size) {
+                printk(KERN_WARNING "Bootloader didn't set memory size, upgrade it !\n");
+                mem_size = 128 * MB;
+        }
+
+        /*
+         * this hardcodes the graphics memory to 8 MB
+         * it really should be sized dynamically (or at least
+         * set as a boot param)
+         */
+        if (!sgivwfb_mem_size) {
+                printk(KERN_WARNING "Defaulting to 8 MB framebuffer size\n");
+                sgivwfb_mem_size = 8 * MB;
+        }
+
+        /*
+         * Trim to nearest MB
+         */
+        sgivwfb_mem_size &= ~((1 << 20) - 1);
+        sgivwfb_mem_phys = mem_size - gfx_mem_size;
+
+        add_memory_region(0, LOWMEMSIZE(), E820_RAM);
+        add_memory_region(HIGH_MEMORY, mem_size - sgivwfb_mem_size - HIGH_MEMORY, E820_RAM);
+        add_memory_region(sgivwfb_mem_phys, sgivwfb_mem_size, E820_RESERVED);
+
+        return "PROM";
+
+        /* Remove gcc warnings */
+        (void) sanitize_e820_map(NULL, NULL);
+        (void) copy_e820_map(NULL, 0);
+}