mirror of
https://github.com/brain-hackers/u-boot-brain
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701e640145
baord_init_f takes one argument, boot_flag. It has not been used for powerpc, until recently changing to use generic board architecture. The boot flag is added as a return value from cpu_init_f(). Signed-off-by: York Sun <yorksun@freescale.com> CC: Alexander Graf <agraf@suse.de>
46 lines
960 B
C
46 lines
960 B
C
/*
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* Copyright 2009 Freescale Semiconductor, Inc.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/processor.h>
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#include <asm/global_data.h>
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#include <fsl_ifc.h>
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#include <asm/io.h>
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DECLARE_GLOBAL_DATA_PTR;
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ulong cpu_init_f(void)
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{
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#ifdef CONFIG_SYS_INIT_L2_ADDR
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ccsr_l2cache_t *l2cache = (void *)CONFIG_SYS_MPC85xx_L2_ADDR;
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out_be32(&l2cache->l2srbar0, CONFIG_SYS_INIT_L2_ADDR);
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/* set MBECCDIS=1, SBECCDIS=1 */
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out_be32(&l2cache->l2errdis,
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(MPC85xx_L2ERRDIS_MBECC | MPC85xx_L2ERRDIS_SBECC));
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/* set L2E=1 & L2SRAM=001 */
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out_be32(&l2cache->l2ctl,
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(MPC85xx_L2CTL_L2E | MPC85xx_L2CTL_L2SRAM_ENTIRE));
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#endif
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return 0;
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}
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#ifndef CONFIG_SYS_FSL_TBCLK_DIV
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#define CONFIG_SYS_FSL_TBCLK_DIV 8
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#endif
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void udelay(unsigned long usec)
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{
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u32 ticks_per_usec = gd->bus_clk / (CONFIG_SYS_FSL_TBCLK_DIV * 1000000);
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u32 ticks = ticks_per_usec * usec;
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u32 s = mfspr(SPRN_TBRL);
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while ((mfspr(SPRN_TBRL) - s) < ticks);
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}
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