106f60ae3SScott Wood /* 206f60ae3SScott Wood * Copyright (C) 2004-2008 Freescale Semiconductor, Inc. 306f60ae3SScott Wood * 4*1a459660SWolfgang Denk * SPDX-License-Identifier: GPL-2.0+ 506f60ae3SScott Wood */ 606f60ae3SScott Wood 706f60ae3SScott Wood #include <common.h> 806f60ae3SScott Wood #include <mpc83xx.h> 906f60ae3SScott Wood 1006f60ae3SScott Wood DECLARE_GLOBAL_DATA_PTR; 1106f60ae3SScott Wood 1206f60ae3SScott Wood /* 1306f60ae3SScott Wood * Breathe some life into the CPU... 1406f60ae3SScott Wood * 1506f60ae3SScott Wood * Set up the memory map, 1606f60ae3SScott Wood * initialize a bunch of registers, 1706f60ae3SScott Wood * initialize the UPM's 1806f60ae3SScott Wood */ 1906f60ae3SScott Wood void cpu_init_f (volatile immap_t * im) 2006f60ae3SScott Wood { 2106f60ae3SScott Wood int i; 2206f60ae3SScott Wood 2306f60ae3SScott Wood /* Pointer is writable since we allocated a register for it */ 2406f60ae3SScott Wood gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET); 2506f60ae3SScott Wood 2606f60ae3SScott Wood /* Clear initial global data */ 2706f60ae3SScott Wood for (i = 0; i < sizeof(gd_t); i++) 2806f60ae3SScott Wood ((char *)gd)[i] = 0; 2906f60ae3SScott Wood 3006f60ae3SScott Wood /* system performance tweaking */ 3106f60ae3SScott Wood 3206f60ae3SScott Wood #ifdef CONFIG_SYS_ACR_PIPE_DEP 3306f60ae3SScott Wood /* Arbiter pipeline depth */ 3406f60ae3SScott Wood im->arbiter.acr = (im->arbiter.acr & ~ACR_PIPE_DEP) | 3506f60ae3SScott Wood (CONFIG_SYS_ACR_PIPE_DEP << ACR_PIPE_DEP_SHIFT); 3606f60ae3SScott Wood #endif 3706f60ae3SScott Wood 3806f60ae3SScott Wood #ifdef CONFIG_SYS_ACR_RPTCNT 3906f60ae3SScott Wood /* Arbiter repeat count */ 4006f60ae3SScott Wood im->arbiter.acr = (im->arbiter.acr & ~(ACR_RPTCNT)) | 4106f60ae3SScott Wood (CONFIG_SYS_ACR_RPTCNT << ACR_RPTCNT_SHIFT); 4206f60ae3SScott Wood #endif 4306f60ae3SScott Wood 4406f60ae3SScott Wood #ifdef CONFIG_SYS_SPCR_OPT 4506f60ae3SScott Wood /* Optimize transactions between CSB and other devices */ 4606f60ae3SScott Wood im->sysconf.spcr = (im->sysconf.spcr & ~SPCR_OPT) | 4706f60ae3SScott Wood (CONFIG_SYS_SPCR_OPT << SPCR_OPT_SHIFT); 4806f60ae3SScott Wood #endif 4906f60ae3SScott Wood 5006f60ae3SScott Wood /* Enable Time Base & Decrimenter (so we will have udelay()) */ 5106f60ae3SScott Wood im->sysconf.spcr |= SPCR_TBEN; 5206f60ae3SScott Wood 5306f60ae3SScott Wood /* DDR control driver register */ 5406f60ae3SScott Wood #ifdef CONFIG_SYS_DDRCDR 5506f60ae3SScott Wood im->sysconf.ddrcdr = CONFIG_SYS_DDRCDR; 5606f60ae3SScott Wood #endif 5706f60ae3SScott Wood /* Output buffer impedance register */ 5806f60ae3SScott Wood #ifdef CONFIG_SYS_OBIR 5906f60ae3SScott Wood im->sysconf.obir = CONFIG_SYS_OBIR; 6006f60ae3SScott Wood #endif 6106f60ae3SScott Wood 6206f60ae3SScott Wood /* 6306f60ae3SScott Wood * Memory Controller: 6406f60ae3SScott Wood */ 6506f60ae3SScott Wood 6606f60ae3SScott Wood /* Map banks 0 and 1 to the FLASH banks 0 and 1 at preliminary 6706f60ae3SScott Wood * addresses - these have to be modified later when FLASH size 6806f60ae3SScott Wood * has been determined 6906f60ae3SScott Wood */ 7006f60ae3SScott Wood 7106f60ae3SScott Wood #if defined(CONFIG_SYS_NAND_BR_PRELIM) \ 7206f60ae3SScott Wood && defined(CONFIG_SYS_NAND_OR_PRELIM) \ 7306f60ae3SScott Wood && defined(CONFIG_SYS_NAND_LBLAWBAR_PRELIM) \ 7406f60ae3SScott Wood && defined(CONFIG_SYS_NAND_LBLAWAR_PRELIM) 7506f60ae3SScott Wood set_lbc_br(0, CONFIG_SYS_NAND_BR_PRELIM); 7606f60ae3SScott Wood set_lbc_or(0, CONFIG_SYS_NAND_OR_PRELIM); 7706f60ae3SScott Wood im->sysconf.lblaw[0].bar = CONFIG_SYS_NAND_LBLAWBAR_PRELIM; 7806f60ae3SScott Wood im->sysconf.lblaw[0].ar = CONFIG_SYS_NAND_LBLAWAR_PRELIM; 7906f60ae3SScott Wood #else 8006f60ae3SScott Wood #error CONFIG_SYS_NAND_BR_PRELIM, CONFIG_SYS_NAND_OR_PRELIM, CONFIG_SYS_NAND_LBLAWBAR_PRELIM & CONFIG_SYS_NAND_LBLAWAR_PRELIM must be defined 8106f60ae3SScott Wood #endif 8206f60ae3SScott Wood } 8306f60ae3SScott Wood 8406f60ae3SScott Wood /* 8506f60ae3SScott Wood * Get timebase clock frequency (like cpu_clk in Hz) 8606f60ae3SScott Wood */ 8706f60ae3SScott Wood unsigned long get_tbclk(void) 8806f60ae3SScott Wood { 8906f60ae3SScott Wood return (gd->bus_clk + 3L) / 4L; 9006f60ae3SScott Wood } 9106f60ae3SScott Wood 9206f60ae3SScott Wood void puts(const char *str) 9306f60ae3SScott Wood { 9406f60ae3SScott Wood while (*str) 9506f60ae3SScott Wood putc(*str++); 9606f60ae3SScott Wood } 97