prom.c 969 B

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  1. /*
  2. * Atheros AR71XX/AR724X/AR913X specific prom routines
  3. *
  4. * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
  5. * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
  6. *
  7. * This program is free software; you can redistribute it and/or modify it
  8. * under the terms of the GNU General Public License version 2 as published
  9. * by the Free Software Foundation.
  10. */
  11. #include <linux/kernel.h>
  12. #include <linux/init.h>
  13. #include <linux/io.h>
  14. #include <linux/string.h>
  15. #include <linux/initrd.h>
  16. #include <asm/bootinfo.h>
  17. #include <asm/addrspace.h>
  18. #include <asm/fw/fw.h>
  19. #include "common.h"
  20. void __init prom_init(void)
  21. {
  22. fw_init_cmdline();
  23. /* Read the initrd address from the firmware environment */
  24. initrd_start = fw_getenvl("initrd_start");
  25. if (initrd_start) {
  26. initrd_start = KSEG0ADDR(initrd_start);
  27. initrd_end = initrd_start + fw_getenvl("initrd_size");
  28. }
  29. }
  30. void __init prom_free_prom_memory(void)
  31. {
  32. /* We do not have to prom memory to free */
  33. }