mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-17 10:18:38 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
43 lines
951 B
C
43 lines
951 B
C
/*
|
|
* Copyright 2009 Freescale Semiconductor, Inc.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#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);
|
|
}
|