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kernel/linux-rt-4.4.41/arch/powerpc/boot/cuboot-taishan.c 1.33 KB
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  /*
   * Old U-boot compatibility for Taishan
   *
   * Author: Hugh Blemings <hugh@au.ibm.com>
   *
   * Copyright 2007 Hugh Blemings, IBM Corporation.
   *   Based on cuboot-ebony.c which is:
   * Copyright 2007 David Gibson, IBM Corporation.
   *   Based on cuboot-83xx.c, which is:
   * Copyright (c) 2007 Freescale Semiconductor, Inc.
   *
   * 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.
   */
  
  #include "ops.h"
  #include "stdio.h"
  #include "cuboot.h"
  #include "reg.h"
  #include "dcr.h"
  #include "4xx.h"
  
  #define TARGET_4xx
  #define TARGET_44x
  #define TARGET_440GX
  #include "ppcboot.h"
  
  static bd_t bd;
  
  BSS_STACK(4096);
  
  static void taishan_fixups(void)
  {
  	/* FIXME: sysclk should be derived by reading the FPGA
  	   registers */
  	unsigned long sysclk = 33000000;
  
  	ibm440gx_fixup_clocks(sysclk, 6 * 1843200, 25000000);
  
  	ibm4xx_sdram_fixup_memsize();
  
  	dt_fixup_mac_address_by_alias("ethernet0", bd.bi_enetaddr);
  	dt_fixup_mac_address_by_alias("ethernet1", bd.bi_enet1addr);
  
  	ibm4xx_fixup_ebc_ranges("/plb/opb/ebc");
  }
  
  void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
  		   unsigned long r6, unsigned long r7)
  {
  	CUBOOT_INIT();
  
  	platform_ops.fixups = taishan_fixups;
  	fdt_init(_dtb_start);
  	serial_console_init();
  }