mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-15 23:56:23 +09:00
a47a12becf
As discussed on the list, move "arch/ppc" to "arch/powerpc" to better match the Linux directory structure. Please note that this patch also changes the "ppc" target in MAKEALL to "powerpc" to match this new infrastructure. But "ppc" is kept as an alias for now, to not break compatibility with scripts using this name. Signed-off-by: Stefan Roese <sr@denx.de> Acked-by: Wolfgang Denk <wd@denx.de> Acked-by: Detlev Zundel <dzu@denx.de> Acked-by: Kim Phillips <kim.phillips@freescale.com> Cc: Peter Tyser <ptyser@xes-inc.com> Cc: Anatolij Gustschin <agust@denx.de>
113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
/*
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* Copyright (C) 2004-2008 Freescale Semiconductor, Inc.
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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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#include <common.h>
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#include <mpc83xx.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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* initialize the UPM's
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*/
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void cpu_init_f (volatile immap_t * im)
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{
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int i;
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/* Pointer is writable since we allocated a register for it */
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gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET);
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/* Clear initial global data */
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for (i = 0; i < sizeof(gd_t); i++)
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((char *)gd)[i] = 0;
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/* system performance tweaking */
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#ifdef CONFIG_SYS_ACR_PIPE_DEP
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/* Arbiter pipeline depth */
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im->arbiter.acr = (im->arbiter.acr & ~ACR_PIPE_DEP) |
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(CONFIG_SYS_ACR_PIPE_DEP << ACR_PIPE_DEP_SHIFT);
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#endif
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#ifdef CONFIG_SYS_ACR_RPTCNT
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/* Arbiter repeat count */
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im->arbiter.acr = (im->arbiter.acr & ~(ACR_RPTCNT)) |
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(CONFIG_SYS_ACR_RPTCNT << ACR_RPTCNT_SHIFT);
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#endif
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#ifdef CONFIG_SYS_SPCR_OPT
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/* Optimize transactions between CSB and other devices */
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im->sysconf.spcr = (im->sysconf.spcr & ~SPCR_OPT) |
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(CONFIG_SYS_SPCR_OPT << SPCR_OPT_SHIFT);
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#endif
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/* Enable Time Base & Decrimenter (so we will have udelay()) */
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im->sysconf.spcr |= SPCR_TBEN;
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/* DDR control driver register */
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#ifdef CONFIG_SYS_DDRCDR
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im->sysconf.ddrcdr = CONFIG_SYS_DDRCDR;
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#endif
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/* Output buffer impedance register */
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#ifdef CONFIG_SYS_OBIR
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im->sysconf.obir = CONFIG_SYS_OBIR;
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#endif
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/*
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* Memory Controller:
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*/
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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(CONFIG_SYS_NAND_BR_PRELIM) \
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&& defined(CONFIG_SYS_NAND_OR_PRELIM) \
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&& defined(CONFIG_SYS_NAND_LBLAWBAR_PRELIM) \
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&& defined(CONFIG_SYS_NAND_LBLAWAR_PRELIM)
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im->lbus.bank[0].br = CONFIG_SYS_NAND_BR_PRELIM;
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im->lbus.bank[0].or = CONFIG_SYS_NAND_OR_PRELIM;
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im->sysconf.lblaw[0].bar = CONFIG_SYS_NAND_LBLAWBAR_PRELIM;
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im->sysconf.lblaw[0].ar = CONFIG_SYS_NAND_LBLAWAR_PRELIM;
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#else
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#error CONFIG_SYS_NAND_BR_PRELIM, CONFIG_SYS_NAND_OR_PRELIM, CONFIG_SYS_NAND_LBLAWBAR_PRELIM & CONFIG_SYS_NAND_LBLAWAR_PRELIM must be defined
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#endif
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}
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/*
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* Get timebase clock frequency (like cpu_clk in Hz)
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*/
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unsigned long get_tbclk(void)
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{
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return (gd->bus_clk + 3L) / 4L;
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}
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void puts(const char *str)
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{
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while (*str)
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putc(*str++);
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}
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