| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Copyright 2009 Freescale Semiconductor, Inc. |
| */ |
| |
| #include <common.h> |
| #include <asm/processor.h> |
| #include <asm/global_data.h> |
| #include <fsl_ifc.h> |
| #include <asm/io.h> |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| ulong 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 |
| |
| return 0; |
| } |
| |
| #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); |
| } |
