1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Copyright 2009 Freescale Semiconductor, Inc. 4 */ 5 6 #include <common.h> 7 #include <asm/processor.h> 8 #include <asm/global_data.h> 9 #include <fsl_ifc.h> 10 #include <asm/io.h> 11 12 DECLARE_GLOBAL_DATA_PTR; 13 14 ulong cpu_init_f(void) 15 { 16 #ifdef CONFIG_SYS_INIT_L2_ADDR 17 ccsr_l2cache_t *l2cache = (void *)CONFIG_SYS_MPC85xx_L2_ADDR; 18 19 out_be32(&l2cache->l2srbar0, CONFIG_SYS_INIT_L2_ADDR); 20 21 /* set MBECCDIS=1, SBECCDIS=1 */ 22 out_be32(&l2cache->l2errdis, 23 (MPC85xx_L2ERRDIS_MBECC | MPC85xx_L2ERRDIS_SBECC)); 24 25 /* set L2E=1 & L2SRAM=001 */ 26 out_be32(&l2cache->l2ctl, 27 (MPC85xx_L2CTL_L2E | MPC85xx_L2CTL_L2SRAM_ENTIRE)); 28 #endif 29 30 return 0; 31 } 32 33 #ifndef CONFIG_SYS_FSL_TBCLK_DIV 34 #define CONFIG_SYS_FSL_TBCLK_DIV 8 35 #endif 36 37 void udelay(unsigned long usec) 38 { 39 u32 ticks_per_usec = gd->bus_clk / (CONFIG_SYS_FSL_TBCLK_DIV * 1000000); 40 u32 ticks = ticks_per_usec * usec; 41 u32 s = mfspr(SPRN_TBRL); 42 43 while ((mfspr(SPRN_TBRL) - s) < ticks); 44 } 45
