mirror of
https://github.com/AsahiLinux/u-boot
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118 lines
3 KiB
C
118 lines
3 KiB
C
/*
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* Copyright 2004 Freescale Semiconductor.
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* Jeff Brown
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* Srikanth Srinivasan (srikanth.srinivasan@freescale.com)
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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/*
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* cpu_init.c - low level cpu init
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*/
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#include <common.h>
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#include <mpc86xx.h>
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DECLARE_GLOBAL_DATA_PTR;
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/*
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* Breathe some life into the CPU...
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*
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* Set up the memory map
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* initialize a bunch of registers
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*/
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void cpu_init_f(void)
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{
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volatile immap_t *immap = (immap_t *)CFG_IMMR;
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volatile ccsr_lbc_t *memctl = &immap->im_lbc;
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/* Pointer is writable since we allocated a register for it */
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gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
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/* Clear initial global data */
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memset ((void *) gd, 0, sizeof (gd_t));
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/* Map banks 0 and 1 to the FLASH banks 0 and 1 at preliminary
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* addresses - these have to be modified later when FLASH size
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* has been determined
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*/
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#if defined(CFG_OR0_REMAP)
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memctl->or0 = CFG_OR0_REMAP;
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#endif
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#if defined(CFG_OR1_REMAP)
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memctl->or1 = CFG_OR1_REMAP;
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#endif
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/* now restrict to preliminary range */
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#if defined(CFG_BR0_PRELIM) && defined(CFG_OR0_PRELIM)
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memctl->br0 = CFG_BR0_PRELIM;
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memctl->or0 = CFG_OR0_PRELIM;
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#endif
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#if defined(CFG_BR1_PRELIM) && defined(CFG_OR1_PRELIM)
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memctl->or1 = CFG_OR1_PRELIM;
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memctl->br1 = CFG_BR1_PRELIM;
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#endif
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#if defined(CFG_BR2_PRELIM) && defined(CFG_OR2_PRELIM)
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memctl->or2 = CFG_OR2_PRELIM;
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memctl->br2 = CFG_BR2_PRELIM;
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#endif
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#if defined(CFG_BR3_PRELIM) && defined(CFG_OR3_PRELIM)
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memctl->or3 = CFG_OR3_PRELIM;
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memctl->br3 = CFG_BR3_PRELIM;
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#endif
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#if defined(CFG_BR4_PRELIM) && defined(CFG_OR4_PRELIM)
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memctl->or4 = CFG_OR4_PRELIM;
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memctl->br4 = CFG_BR4_PRELIM;
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#endif
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#if defined(CFG_BR5_PRELIM) && defined(CFG_OR5_PRELIM)
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memctl->or5 = CFG_OR5_PRELIM;
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memctl->br5 = CFG_BR5_PRELIM;
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#endif
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#if defined(CFG_BR6_PRELIM) && defined(CFG_OR6_PRELIM)
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memctl->or6 = CFG_OR6_PRELIM;
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memctl->br6 = CFG_BR6_PRELIM;
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#endif
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#if defined(CFG_BR7_PRELIM) && defined(CFG_OR7_PRELIM)
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memctl->or7 = CFG_OR7_PRELIM;
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memctl->br7 = CFG_BR7_PRELIM;
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#endif
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/* enable the timebase bit in HID0 */
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set_hid0(get_hid0() | 0x4000000);
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/* enable EMCP, SYNCBE | ABE bits in HID1 */
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set_hid1(get_hid1() | 0x80000C00);
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}
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/*
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* initialize higher level parts of CPU like timers
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*/
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int cpu_init_r(void)
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{
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return 0;
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}
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