arch/avr32/boards/atstk1000/setup.c

   1 /*
   2  * ATSTK1000 board-specific setup code.
   3  *
   4  * Copyright (C) 2005-2006 Atmel Corporation
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10 #include <linux/bootmem.h>
  11 #include <linux/init.h>
  12 #include <linux/types.h>
  13 #include <linux/linkage.h>
  14
  15 #include <asm/setup.h>
  16
  17 #include <asm/arch/board.h>
  18
  19 /* Initialized by bootloader-specific startup code. */
  20 struct tag *bootloader_tags __initdata;
  21
  22 struct lcdc_platform_data __initdata atstk1000_fb0_data;
  23
  24 void __init board_setup_fbmem(unsigned long fbmem_start,
  25                               unsigned long fbmem_size)
  26 {
  27         if (!fbmem_size)
  28                 return;
  29
  30         if (!fbmem_start) {
  31                 void *fbmem;
  32
  33                 fbmem = alloc_bootmem_low_pages(fbmem_size);
  34                 fbmem_start = __pa(fbmem);
  35         } else {
  36                 pg_data_t *pgdat;
  37
  38                 for_each_online_pgdat(pgdat) {
  39                         if (fbmem_start >= pgdat->bdata->node_boot_start
  40                             && fbmem_start <= pgdat->bdata->node_low_pfn)
  41                                 reserve_bootmem_node(pgdat, fbmem_start,
  42                                                      fbmem_size);
  43                 }
  44         }
  45
  46         printk("%luKiB framebuffer memory at address 0x%08lx\n",
  47                fbmem_size >> 10, fbmem_start);
  48         atstk1000_fb0_data.fbmem_start = fbmem_start;
  49         atstk1000_fb0_data.fbmem_size = fbmem_size;
  50 }