u-boot/arch/powerpc/cpu/mpc85xx/spl_minimal.c
Scott Wood c97cd1ba48 spl/85xx: new SPL support
Update CONFIG_RAMBOOT and CONFIG_NAND_SPL references to accept CONFIG_SPL
and CONFIG_SPL_BUILD, respectively.  CONFIG_NAND_SPL can be removed once
the last mpc85xx nand_spl target is gone.

CONFIG_RAMBOOT will need to remain for other use cases, but it doesn't
seem right to overload it for meaning SPL as well as nand_spl does.  Even
if it's somewhat appropriate for the main u-boot, the SPL itself isn't
(necessarily) ramboot, and we don't have separate configs for SPL and
main u-boot.  It was also inconsistent, as other platforms such as
mpc83xx didn't use CONFIG_RAMBOOT in this way.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Cc: Andy Fleming <afleming@freescale.com>
2012-11-26 15:41:25 -06:00

59 lines
1.7 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/processor.h>
#include <asm/global_data.h>
#include <asm/fsl_ifc.h>
#include <asm/io.h>
DECLARE_GLOBAL_DATA_PTR;
void cpu_init_f(void)
{
#ifdef CONFIG_SYS_INIT_L2_ADDR
ccsr_l2cache_t *l2cache = (void *)CONFIG_SYS_MPC85xx_L2_ADDR;
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));
#endif
}
#ifndef CONFIG_SYS_FSL_TBCLK_DIV
#define CONFIG_SYS_FSL_TBCLK_DIV 8
#endif
void udelay(unsigned long usec)
{
u32 ticks_per_usec = gd->bus_clk / (CONFIG_SYS_FSL_TBCLK_DIV * 1000000);
u32 ticks = ticks_per_usec * usec;
u32 s = mfspr(SPRN_TBRL);
while ((mfspr(SPRN_TBRL) - s) < ticks);
}