Merge branch '3.8/vram-conversion' of git://gitorious.org/linux-omap-dss2/linux

Conflicts:
	drivers/video/omap2/dss/Kconfig
	drivers/video/omap2/omapfb/omapfb-ioctl.c
	drivers/video/omap2/omapfb/omapfb-main.c

Merge changes to make omapfb use common dma_alloc, and remove omap's
custom vram allocator.

8 files changed, 48 insertions, 571 deletions

diff --git a/drivers/video/omap2/Kconfig b/drivers/video/omap2/Kconfig
index d877c361abd..346d67d6cf4 100644
--- a/drivers/video/omap2/Kconfig
+++ b/drivers/video/omap2/Kconfig
@@ -1,6 +1,3 @@
-config OMAP2_VRAM
-        bool
-
 config OMAP2_VRFB
         bool
 
diff --git a/drivers/video/omap2/Makefile b/drivers/video/omap2/Makefile
index 5ddef129f79..5ea7cb9aed1 100644
--- a/drivers/video/omap2/Makefile
+++ b/drivers/video/omap2/Makefile
@@ -1,4 +1,3 @@
-obj-$(CONFIG_OMAP2_VRAM) += vram.o
 obj-$(CONFIG_OMAP2_VRFB) += vrfb.o
 
 obj-$(CONFIG_OMAP2_DSS) += dss/
diff --git a/drivers/video/omap2/dss/Kconfig b/drivers/video/omap2/dss/Kconfig
index 50e880260d8..cb0f145c707 100644
--- a/drivers/video/omap2/dss/Kconfig
+++ b/drivers/video/omap2/dss/Kconfig
@@ -5,18 +5,6 @@ menuconfig OMAP2_DSS
 
 if OMAP2_DSS
 
-config OMAP2_VRAM_SIZE
-        int "VRAM size (MB)"
-        range 0 32
-        default 0
-        help
-          The amount of SDRAM to reserve at boot time for video RAM use.
-          This VRAM will be used by omapfb and other drivers that need
-          large continuous RAM area for video use.
-
-          You can also set this with "vram=<bytes>" kernel argument, or
-          in the board file.
-
 config OMAP2_DSS_DEBUG
         bool "Debug support"
         default n
diff --git a/drivers/video/omap2/omapfb/Kconfig b/drivers/video/omap2/omapfb/Kconfig
index 4ea17dc3258..4cb12ce6885 100644
--- a/drivers/video/omap2/omapfb/Kconfig
+++ b/drivers/video/omap2/omapfb/Kconfig
@@ -2,7 +2,6 @@ menuconfig FB_OMAP2
         tristate "OMAP2+ frame buffer support"
         depends on FB && OMAP2_DSS && !DRM_OMAP
 
-        select OMAP2_VRAM
         select OMAP2_VRFB if ARCH_OMAP2 || ARCH_OMAP3
         select FB_CFB_FILLRECT
         select FB_CFB_COPYAREA
diff --git a/drivers/video/omap2/omapfb/omapfb-ioctl.c b/drivers/video/omap2/omapfb/omapfb-ioctl.c
index 55a39be694a..3c73adbbf5f 100644
--- a/drivers/video/omap2/omapfb/omapfb-ioctl.c
+++ b/drivers/video/omap2/omapfb/omapfb-ioctl.c
@@ -31,7 +31,6 @@
 
 #include <video/omapdss.h>
 #include <video/omapvrfb.h>
-#include <plat/vram.h>
 
 #include "omapfb.h"
 
@@ -853,14 +852,15 @@ int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd, unsigned long arg)
                 break;
 
         case OMAPFB_GET_VRAM_INFO: {
-                unsigned long vram, free, largest;
-
                 DBG("ioctl GET_VRAM_INFO\n");
 
-                omap_vram_get_info(&vram, &free, &largest);
-                p.vram_info.total = vram;
-                p.vram_info.free = free;
-                p.vram_info.largest_free_block = largest;
+                /*
+                 * We don't have the ability to get this vram info anymore.
+                 * Fill in something that should keep the applications working.
+                 */
+                p.vram_info.total = SZ_1M * 64;
+                p.vram_info.free = SZ_1M * 64;
+                p.vram_info.largest_free_block = SZ_1M * 64;
 
                 if (copy_to_user((void __user *)arg, &p.vram_info,
                                         sizeof(p.vram_info)))
diff --git a/drivers/video/omap2/omapfb/omapfb-main.c b/drivers/video/omap2/omapfb/omapfb-main.c
index be9096ced79..408a3cce47a 100644
--- a/drivers/video/omap2/omapfb/omapfb-main.c
+++ b/drivers/video/omap2/omapfb/omapfb-main.c
@@ -31,7 +31,6 @@
 #include <linux/omapfb.h>
 
 #include <video/omapdss.h>
-#include <plat/vram.h>
 #include <video/omapvrfb.h>
 
 #include "omapfb.h"
@@ -1333,24 +1332,25 @@ static void omapfb_free_fbmem(struct fb_info *fbi)
 
         rg = ofbi->region;
 
-        WARN_ON(atomic_read(&rg->map_count));
-
-        if (rg->paddr)
-                if (omap_vram_free(rg->paddr, rg->size))
-                        dev_err(fbdev->dev, "VRAM FREE failed\n");
+        if (rg->token == NULL)
+                return;
 
-        if (rg->vaddr)
-                iounmap(rg->vaddr);
+        WARN_ON(atomic_read(&rg->map_count));
 
         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
                 /* unmap the 0 angle rotation */
                 if (rg->vrfb.vaddr[0]) {
                         iounmap(rg->vrfb.vaddr[0]);
-                        omap_vrfb_release_ctx(&rg->vrfb);
                         rg->vrfb.vaddr[0] = NULL;
                 }
+
+                omap_vrfb_release_ctx(&rg->vrfb);
         }
 
+        dma_free_attrs(fbdev->dev, rg->size, rg->token, rg->dma_handle,
+                        &rg->attrs);
+
+        rg->token = NULL;
         rg->vaddr = NULL;
         rg->paddr = 0;
         rg->alloc = 0;
@@ -1385,7 +1385,9 @@ static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
         struct omapfb_info *ofbi = FB2OFB(fbi);
         struct omapfb2_device *fbdev = ofbi->fbdev;
         struct omapfb2_mem_region *rg;
-        void __iomem *vaddr;
+        void *token;
+        DEFINE_DMA_ATTRS(attrs);
+        dma_addr_t dma_handle;
         int r;
 
         rg = ofbi->region;
@@ -1400,42 +1402,43 @@ static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
 
         size = PAGE_ALIGN(size);
 
-        if (!paddr) {
-                DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
-                r = omap_vram_alloc(size, &paddr);
-        } else {
-                DBG("reserving %lu bytes at %lx for fb %d\n", size, paddr,
-                                ofbi->id);
-                r = omap_vram_reserve(paddr, size);
-        }
+        WARN_ONCE(paddr,
+                "reserving memory at predefined address not supported\n");
 
-        if (r) {
+        dma_set_attr(DMA_ATTR_WRITE_COMBINE, &attrs);
+
+        if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
+                dma_set_attr(DMA_ATTR_NO_KERNEL_MAPPING, &attrs);
+
+        DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
+
+        token = dma_alloc_attrs(fbdev->dev, size, &dma_handle,
+                        GFP_KERNEL, &attrs);
+
+        if (token == NULL) {
                 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
                 return -ENOMEM;
         }
 
-        if (ofbi->rotation_type != OMAP_DSS_ROT_VRFB) {
-                vaddr = ioremap_wc(paddr, size);
-
-                if (!vaddr) {
-                        dev_err(fbdev->dev, "failed to ioremap framebuffer\n");
-                        omap_vram_free(paddr, size);
-                        return -ENOMEM;
-                }
+        DBG("allocated VRAM paddr %lx, vaddr %p\n",
+                        (unsigned long)dma_handle, token);
 
-                DBG("allocated VRAM paddr %lx, vaddr %p\n", paddr, vaddr);
-        } else {
+        if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
                 r = omap_vrfb_request_ctx(&rg->vrfb);
                 if (r) {
+                        dma_free_attrs(fbdev->dev, size, token, dma_handle,
+                                        &attrs);
                         dev_err(fbdev->dev, "vrfb create ctx failed\n");
                         return r;
                 }
-
-                vaddr = NULL;
         }
 
-        rg->paddr = paddr;
-        rg->vaddr = vaddr;
+        rg->attrs = attrs;
+        rg->token = token;
+        rg->dma_handle = dma_handle;
+
+        rg->paddr = (unsigned long)dma_handle;
+        rg->vaddr = (void __iomem *)token;
         rg->size = size;
         rg->alloc = 1;
 
diff --git a/drivers/video/omap2/omapfb/omapfb.h b/drivers/video/omap2/omapfb/omapfb.h
index 5ced9b334d3..5f72bf9017f 100644
--- a/drivers/video/omap2/omapfb/omapfb.h
+++ b/drivers/video/omap2/omapfb/omapfb.h
@@ -28,6 +28,8 @@
 #endif
 
 #include <linux/rwsem.h>
+#include <linux/dma-attrs.h>
+#include <linux/dma-mapping.h>
 
 #include <video/omapdss.h>
 
@@ -49,6 +51,9 @@ extern bool omapfb_debug;
 
 struct omapfb2_mem_region {
         int             id;
+        struct dma_attrs attrs;
+        void            *token;
+        dma_addr_t      dma_handle;
         u32             paddr;
         void __iomem    *vaddr;
         struct vrfb     vrfb;
diff --git a/drivers/video/omap2/vram.c b/drivers/video/omap2/vram.c
deleted file mode 100644
index f2b15c4a75b..00000000000
--- a/drivers/video/omap2/vram.c
+++ /dev/null
@@ -1,514 +0,0 @@
-/*
- * VRAM manager for OMAP
- *
- * Copyright (C) 2009 Nokia Corporation
- * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
- */
-
-/*#define DEBUG*/
-
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/list.h>
-#include <linux/slab.h>
-#include <linux/seq_file.h>
-#include <linux/memblock.h>
-#include <linux/completion.h>
-#include <linux/debugfs.h>
-#include <linux/jiffies.h>
-#include <linux/module.h>
-
-#include <asm/setup.h>
-
-#include <plat/vram.h>
-
-#ifdef DEBUG
-#define DBG(format, ...) pr_debug("VRAM: " format, ## __VA_ARGS__)
-#else
-#define DBG(format, ...)
-#endif
-
-/* postponed regions are used to temporarily store region information at boot
- * time when we cannot yet allocate the region list */
-#define MAX_POSTPONED_REGIONS 10
-
-static bool vram_initialized;
-static int postponed_cnt;
-static struct {
-        unsigned long paddr;
-        size_t size;
-} postponed_regions[MAX_POSTPONED_REGIONS];
-
-struct vram_alloc {
-        struct list_head list;
-        unsigned long paddr;
-        unsigned pages;
-};
-
-struct vram_region {
-        struct list_head list;
-        struct list_head alloc_list;
-        unsigned long paddr;
-        unsigned pages;
-};
-
-static DEFINE_MUTEX(region_mutex);
-static LIST_HEAD(region_list);
-
-static struct vram_region *omap_vram_create_region(unsigned long paddr,
-                unsigned pages)
-{
-        struct vram_region *rm;
-
-        rm = kzalloc(sizeof(*rm), GFP_KERNEL);
-
-        if (rm) {
-                INIT_LIST_HEAD(&rm->alloc_list);
-                rm->paddr = paddr;
-                rm->pages = pages;
-        }
-
-        return rm;
-}
-
-#if 0
-static void omap_vram_free_region(struct vram_region *vr)
-{
-        list_del(&vr->list);
-        kfree(vr);
-}
-#endif
-
-static struct vram_alloc *omap_vram_create_allocation(struct vram_region *vr,
-                unsigned long paddr, unsigned pages)
-{
-        struct vram_alloc *va;
-        struct vram_alloc *new;
-
-        new = kzalloc(sizeof(*va), GFP_KERNEL);
-
-        if (!new)
-                return NULL;
-
-        new->paddr = paddr;
-        new->pages = pages;
-
-        list_for_each_entry(va, &vr->alloc_list, list) {
-                if (va->paddr > new->paddr)
-                        break;
-        }
-
-        list_add_tail(&new->list, &va->list);
-
-        return new;
-}
-
-static void omap_vram_free_allocation(struct vram_alloc *va)
-{
-        list_del(&va->list);
-        kfree(va);
-}
-
-int omap_vram_add_region(unsigned long paddr, size_t size)
-{
-        struct vram_region *rm;
-        unsigned pages;
-
-        if (vram_initialized) {
-                DBG("adding region paddr %08lx size %d\n",
-                                paddr, size);
-
-                size &= PAGE_MASK;
-                pages = size >> PAGE_SHIFT;
-
-                rm = omap_vram_create_region(paddr, pages);
-                if (rm == NULL)
-                        return -ENOMEM;
-
-                list_add(&rm->list, &region_list);
-        } else {
-                if (postponed_cnt == MAX_POSTPONED_REGIONS)
-                        return -ENOMEM;
-
-                postponed_regions[postponed_cnt].paddr = paddr;
-                postponed_regions[postponed_cnt].size = size;
-
-                ++postponed_cnt;
-        }
-        return 0;
-}
-
-int omap_vram_free(unsigned long paddr, size_t size)
-{
-        struct vram_region *rm;
-        struct vram_alloc *alloc;
-        unsigned start, end;
-
-        DBG("free mem paddr %08lx size %d\n", paddr, size);
-
-        size = PAGE_ALIGN(size);
-
-        mutex_lock(&region_mutex);
-
-        list_for_each_entry(rm, &region_list, list) {
-                list_for_each_entry(alloc, &rm->alloc_list, list) {
-                        start = alloc->paddr;
-                        end = alloc->paddr + (alloc->pages >> PAGE_SHIFT);
-
-                        if (start >= paddr && end < paddr + size)
-                                goto found;
-                }
-        }
-
-        mutex_unlock(&region_mutex);
-        return -EINVAL;
-
-found:
-        omap_vram_free_allocation(alloc);
-
-        mutex_unlock(&region_mutex);
-        return 0;
-}
-EXPORT_SYMBOL(omap_vram_free);
-
-static int _omap_vram_reserve(unsigned long paddr, unsigned pages)
-{
-        struct vram_region *rm;
-        struct vram_alloc *alloc;
-        size_t size;
-
-        size = pages << PAGE_SHIFT;
-
-        list_for_each_entry(rm, &region_list, list) {
-                unsigned long start, end;
-
-                DBG("checking region %lx %d\n", rm->paddr, rm->pages);
-
-                start = rm->paddr;
-                end = start + (rm->pages << PAGE_SHIFT) - 1;
-                if (start > paddr || end < paddr + size - 1)
-                        continue;
-
-                DBG("block ok, checking allocs\n");
-
-                list_for_each_entry(alloc, &rm->alloc_list, list) {
-                        end = alloc->paddr - 1;
-
-                        if (start <= paddr && end >= paddr + size - 1)
-                                goto found;
-
-                        start = alloc->paddr + (alloc->pages << PAGE_SHIFT);
-                }
-
-                end = rm->paddr + (rm->pages << PAGE_SHIFT) - 1;
-
-                if (!(start <= paddr && end >= paddr + size - 1))
-                        continue;
-found:
-                DBG("found area start %lx, end %lx\n", start, end);
-
-                if (omap_vram_create_allocation(rm, paddr, pages) == NULL)
-                        return -ENOMEM;
-
-                return 0;
-        }
-
-        return -ENOMEM;
-}
-
-int omap_vram_reserve(unsigned long paddr, size_t size)
-{
-        unsigned pages;
-        int r;
-
-        DBG("reserve mem paddr %08lx size %d\n", paddr, size);
-
-        size = PAGE_ALIGN(size);
-        pages = size >> PAGE_SHIFT;
-
-        mutex_lock(&region_mutex);
-
-        r = _omap_vram_reserve(paddr, pages);
-
-        mutex_unlock(&region_mutex);
-
-        return r;
-}
-EXPORT_SYMBOL(omap_vram_reserve);
-
-static int _omap_vram_alloc(unsigned pages, unsigned long *paddr)
-{
-        struct vram_region *rm;
-        struct vram_alloc *alloc;
-
-        list_for_each_entry(rm, &region_list, list) {
-                unsigned long start, end;
-
-                DBG("checking region %lx %d\n", rm->paddr, rm->pages);
-
-                start = rm->paddr;
-
-                list_for_each_entry(alloc, &rm->alloc_list, list) {
-                        end = alloc->paddr;
-
-                        if (end - start >= pages << PAGE_SHIFT)
-                                goto found;
-
-                        start = alloc->paddr + (alloc->pages << PAGE_SHIFT);
-                }
-
-                end = rm->paddr + (rm->pages << PAGE_SHIFT);
-found:
-                if (end - start < pages << PAGE_SHIFT)
-                        continue;
-
-                DBG("found %lx, end %lx\n", start, end);
-
-                alloc = omap_vram_create_allocation(rm, start, pages);
-                if (alloc == NULL)
-                        return -ENOMEM;
-
-                *paddr = start;
-
-                return 0;
-        }
-
-        return -ENOMEM;
-}
-
-int omap_vram_alloc(size_t size, unsigned long *paddr)
-{
-        unsigned pages;
-        int r;
-
-        BUG_ON(!size);
-
-        DBG("alloc mem size %d\n", size);
-
-        size = PAGE_ALIGN(size);
-        pages = size >> PAGE_SHIFT;
-
-        mutex_lock(&region_mutex);
-
-        r = _omap_vram_alloc(pages, paddr);
-
-        mutex_unlock(&region_mutex);
-
-        return r;
-}
-EXPORT_SYMBOL(omap_vram_alloc);
-
-void omap_vram_get_info(unsigned long *vram,
-                unsigned long *free_vram,
-                unsigned long *largest_free_block)
-{
-        struct vram_region *vr;
-        struct vram_alloc *va;
-
-        *vram = 0;
-        *free_vram = 0;
-        *largest_free_block = 0;
-
-        mutex_lock(&region_mutex);
-
-        list_for_each_entry(vr, &region_list, list) {
-                unsigned free;
-                unsigned long pa;
-
-                pa = vr->paddr;
-                *vram += vr->pages << PAGE_SHIFT;
-
-                list_for_each_entry(va, &vr->alloc_list, list) {
-                        free = va->paddr - pa;
-                        *free_vram += free;
-                        if (free > *largest_free_block)
-                                *largest_free_block = free;
-                        pa = va->paddr + (va->pages << PAGE_SHIFT);
-                }
-
-                free = vr->paddr + (vr->pages << PAGE_SHIFT) - pa;
-                *free_vram += free;
-                if (free > *largest_free_block)
-                        *largest_free_block = free;
-        }
-
-        mutex_unlock(&region_mutex);
-}
-EXPORT_SYMBOL(omap_vram_get_info);
-
-#if defined(CONFIG_DEBUG_FS)
-static int vram_debug_show(struct seq_file *s, void *unused)
-{
-        struct vram_region *vr;
-        struct vram_alloc *va;
-        unsigned size;
-
-        mutex_lock(&region_mutex);
-
-        list_for_each_entry(vr, &region_list, list) {
-                size = vr->pages << PAGE_SHIFT;
-                seq_printf(s, "%08lx-%08lx (%d bytes)\n",
-                                vr->paddr, vr->paddr + size - 1,
-                                size);
-
-                list_for_each_entry(va, &vr->alloc_list, list) {
-                        size = va->pages << PAGE_SHIFT;
-                        seq_printf(s, "    %08lx-%08lx (%d bytes)\n",
-                                        va->paddr, va->paddr + size - 1,
-                                        size);
-                }
-        }
-
-        mutex_unlock(&region_mutex);
-
-        return 0;
-}
-
-static int vram_debug_open(struct inode *inode, struct file *file)
-{
-        return single_open(file, vram_debug_show, inode->i_private);
-}
-
-static const struct file_operations vram_debug_fops = {
-        .open           = vram_debug_open,
-        .read           = seq_read,
-        .llseek         = seq_lseek,
-        .release        = single_release,
-};
-
-static int __init omap_vram_create_debugfs(void)
-{
-        struct dentry *d;
-
-        d = debugfs_create_file("vram", S_IRUGO, NULL,
-                        NULL, &vram_debug_fops);
-        if (IS_ERR(d))
-                return PTR_ERR(d);
-
-        return 0;
-}
-#endif
-
-static __init int omap_vram_init(void)
-{
-        int i;
-
-        vram_initialized = 1;
-
-        for (i = 0; i < postponed_cnt; i++)
-                omap_vram_add_region(postponed_regions[i].paddr,
-                                postponed_regions[i].size);
-
-#ifdef CONFIG_DEBUG_FS
-        if (omap_vram_create_debugfs())
-                pr_err("VRAM: Failed to create debugfs file\n");
-#endif
-
-        return 0;
-}
-
-arch_initcall(omap_vram_init);
-
-/* boottime vram alloc stuff */
-
-/* set from board file */
-static u32 omap_vram_sdram_start __initdata;
-static u32 omap_vram_sdram_size __initdata;
-
-/* set from kernel cmdline */
-static u32 omap_vram_def_sdram_size __initdata;
-static u32 omap_vram_def_sdram_start __initdata;
-
-static int __init omap_vram_early_vram(char *p)
-{
-        omap_vram_def_sdram_size = memparse(p, &p);
-        if (*p == ',')
-                omap_vram_def_sdram_start = simple_strtoul(p + 1, &p, 16);
-        return 0;
-}
-early_param("vram", omap_vram_early_vram);
-
-/*
- * Called from map_io. We need to call to this early enough so that we
- * can reserve the fixed SDRAM regions before VM could get hold of them.
- */
-void __init omap_vram_reserve_sdram_memblock(void)
-{
-        u32 paddr;
-        u32 size = 0;
-
-        /* cmdline arg overrides the board file definition */
-        if (omap_vram_def_sdram_size) {
-                size = omap_vram_def_sdram_size;
-                paddr = omap_vram_def_sdram_start;
-        }
-
-        if (!size) {
-                size = omap_vram_sdram_size;
-                paddr = omap_vram_sdram_start;
-        }
-
-#ifdef CONFIG_OMAP2_VRAM_SIZE
-        if (!size) {
-                size = CONFIG_OMAP2_VRAM_SIZE * 1024 * 1024;
-                paddr = 0;
-        }
-#endif
-
-        if (!size)
-                return;
-
-        size = ALIGN(size, SZ_2M);
-
-        if (paddr) {
-                if (paddr & ~PAGE_MASK) {
-                        pr_err("VRAM start address 0x%08x not page aligned\n",
-                                        paddr);
-                        return;
-                }
-
-                if (!memblock_is_region_memory(paddr, size)) {
-                        pr_err("Illegal SDRAM region 0x%08x..0x%08x for VRAM\n",
-                                        paddr, paddr + size - 1);
-                        return;
-                }
-
-                if (memblock_is_region_reserved(paddr, size)) {
-                        pr_err("FB: failed to reserve VRAM - busy\n");
-                        return;
-                }
-
-                if (memblock_reserve(paddr, size) < 0) {
-                        pr_err("FB: failed to reserve VRAM - no memory\n");
-                        return;
-                }
-        } else {
-                paddr = memblock_alloc(size, SZ_2M);
-        }
-
-        memblock_free(paddr, size);
-        memblock_remove(paddr, size);
-
-        omap_vram_add_region(paddr, size);
-
-        pr_info("Reserving %u bytes SDRAM for VRAM\n", size);
-}
-
-void __init omap_vram_set_sdram_vram(u32 size, u32 start)
-{
-        omap_vram_sdram_start = start;
-        omap_vram_sdram_size = size;
-}