arch/powerpc/boot/cuboot.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Compatibility for old (not device tree aware) U-Boot versions
   4  *
   5  * Author: Scott Wood <[email protected]>
   6  * Consolidated using macros by David Gibson <[email protected]>
   7  *
   8  * Copyright 2007 David Gibson, IBM Corporation.
   9  * Copyright (c) 2007 Freescale Semiconductor, Inc.
  10  */
  11
  12 #include "ops.h"
  13 #include "stdio.h"
  14
  15 #include "ppcboot.h"
  16
  17 void cuboot_init(unsigned long r4, unsigned long r5,
  18                  unsigned long r6, unsigned long r7,
  19                  unsigned long end_of_ram)
  20 {
  21         unsigned long avail_ram = end_of_ram - (unsigned long)_end;
  22
  23         loader_info.initrd_addr = r4;
  24         loader_info.initrd_size = r4 ? r5 - r4 : 0;
  25         loader_info.cmdline = (char *)r6;
  26         loader_info.cmdline_len = r7 - r6;
  27
  28         simple_alloc_init(_end, avail_ram - 1024*1024, 32, 64);
  29 }