1 files changed, 41 insertions, 0 deletions

diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c
index 5c1b246aaccc..7b45670c7af3 100644
--- a/arch/powerpc/sysdev/fsl_soc.c
+++ b/arch/powerpc/sysdev/fsl_soc.c
@@ -892,3 +892,44 @@ void fsl_rstcr_restart(char *cmd)
         while (1) ;
 }
 #endif
+
+#if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)
+struct platform_diu_data_ops diu_ops = {
+        .diu_size = 1280 * 1024 * 4,    /* default one 1280x1024 buffer */
+};
+EXPORT_SYMBOL(diu_ops);
+
+int __init preallocate_diu_videomemory(void)
+{
+        pr_debug("diu_size=%lu\n", diu_ops.diu_size);
+
+        diu_ops.diu_mem = __alloc_bootmem(diu_ops.diu_size, 8, 0);
+        if (!diu_ops.diu_mem) {
+                printk(KERN_ERR "fsl-diu: cannot allocate %lu bytes\n",
+                        diu_ops.diu_size);
+                return -ENOMEM;
+        }
+
+        pr_debug("diu_mem=%p\n", diu_ops.diu_mem);
+
+        rh_init(&diu_ops.diu_rh_info, 4096, ARRAY_SIZE(diu_ops.diu_rh_block),
+                diu_ops.diu_rh_block);
+        return rh_attach_region(&diu_ops.diu_rh_info,
+                                (unsigned long) diu_ops.diu_mem,
+                                diu_ops.diu_size);
+}
+
+static int __init early_parse_diufb(char *p)
+{
+        if (!p)
+                return 1;
+
+        diu_ops.diu_size = _ALIGN_UP(memparse(p, &p), 8);
+
+        pr_debug("diu_size=%lu\n", diu_ops.diu_size);
+
+        return 0;
+}
+early_param("diufb", early_parse_diufb);
+
+#endif