u-boot/arch/powerpc/cpu/mpc85xx/cpu_init_nand.c
Becky Bruce f51cdaf191 83xx/85xx/86xx: LBC register cleanup
Currently, 83xx, 86xx, and 85xx have a lot of duplicated code
dedicated to defining and manipulating the LBC registers.  Merge
this into a single spot.

To do this, we have to decide on a common name for the data structure
that holds the lbc registers - it will now be known as fsl_lbc_t, and we
adopt a common name for the immap layouts that include the lbc - this was
previously known as either im_lbc or lbus; use the former.

In addition, create accessors for the BR/OR regs that use in/out_be32
and use those instead of the mismash of access methods currently in play.

I have done a successful ppc build all and tested a board or two from
each processor family.

Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Acked-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
2010-07-16 10:55:09 -05:00

63 lines
1.9 KiB
C

/*
* Copyright 2009 Freescale Semiconductor, Inc.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
#include <common.h>
#include <asm/io.h>
void cpu_init_f(void)
{
fsl_lbc_t *lbc = LBC_BASE_ADDR;
/*
* LCRR - Clock Ratio Register - set up local bus timing
* when needed
*/
out_be32(&lbc->lcrr, LCRR_DBYP | LCRR_CLKDIV_8);
#if defined(CONFIG_NAND_BR_PRELIM) && defined(CONFIG_NAND_OR_PRELIM)
set_lbc_br(0, CONFIG_NAND_BR_PRELIM);
set_lbc_or(0, CONFIG_NAND_OR_PRELIM);
#else
#error CONFIG_NAND_BR_PRELIM, CONFIG_NAND_OR_PRELIM must be defined
#endif
#if defined(CONFIG_SYS_RAMBOOT) && defined(CONFIG_SYS_INIT_L2_ADDR)
ccsr_l2cache_t *l2cache = (void *)CONFIG_SYS_MPC85xx_L2_ADDR;
char *l2srbar;
int i;
out_be32(&l2cache->l2srbar0, CONFIG_SYS_INIT_L2_ADDR);
/* set MBECCDIS=1, SBECCDIS=1 */
out_be32(&l2cache->l2errdis,
(MPC85xx_L2ERRDIS_MBECC | MPC85xx_L2ERRDIS_SBECC));
/* set L2E=1 & L2SRAM=001 */
out_be32(&l2cache->l2ctl,
(MPC85xx_L2CTL_L2E | MPC85xx_L2CTL_L2SRAM_ENTIRE));
/* Initialize L2 SRAM to zero */
l2srbar = (char *)CONFIG_SYS_INIT_L2_ADDR;
for (i = 0; i < CONFIG_SYS_L2_SIZE; i++)
l2srbar[i] = 0;
#endif
}