diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/video/sunxi_display.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/drivers/video/sunxi_display.c b/drivers/video/sunxi_display.c index f5f24fc..cd5963a 100644 --- a/drivers/video/sunxi_display.c +++ b/drivers/video/sunxi_display.c @@ -1060,6 +1060,11 @@ static const char *sunxi_get_mon_desc(enum sunxi_monitor monitor) return NULL; /* never reached */ } +ulong board_get_usable_ram_top(ulong total_size) +{ + return gd->ram_top - CONFIG_SUNXI_MAX_FB_SIZE; +} + void *video_hw_init(void) { static GraphicDevice *graphic_device = &sunxi_display.graphic_device; @@ -1076,7 +1081,7 @@ void *video_hw_init(void) memset(&sunxi_display, 0, sizeof(struct sunxi_display)); printf("Reserved %dkB of RAM for Framebuffer.\n", - CONFIG_SUNXI_FB_SIZE >> 10); + CONFIG_SUNXI_MAX_FB_SIZE >> 10); gd->fb_base = gd->ram_top; video_get_ctfb_res_modes(RES_MODE_1024x768, 24, &mode, @@ -1194,6 +1199,7 @@ int sunxi_simplefb_setup(void *blob) { static GraphicDevice *graphic_device = &sunxi_display.graphic_device; int offset, ret; + u64 start, size; const char *pipeline = NULL; #ifdef CONFIG_MACH_SUN4I @@ -1237,6 +1243,20 @@ int sunxi_simplefb_setup(void *blob) return 0; /* Keep older kernels working */ } + /* + * Do not report the framebuffer as free RAM to the OS, note we cannot + * use fdt_add_mem_rsv() here, because then it is still seen as RAM, + * and e.g. Linux refuses to iomap RAM on ARM, see: + * linux/arch/arm/mm/ioremap.c around line 301. + */ + start = gd->bd->bi_dram[0].start; + size = gd->bd->bi_dram[0].size - CONFIG_SUNXI_MAX_FB_SIZE; + ret = fdt_fixup_memory_banks(blob, &start, &size, 1); + if (ret) { + eprintf("Cannot setup simplefb: Error reserving memory\n"); + return ret; + } + ret = fdt_setup_simplefb_node(blob, offset, gd->fb_base, graphic_device->winSizeX, graphic_device->winSizeY, graphic_device->winSizeX * graphic_device->gdfBytesPP, |