diff options
Diffstat (limited to 'arch/powerpc/cpu/mpc512x/cpu_init.c')
| -rw-r--r-- | arch/powerpc/cpu/mpc512x/cpu_init.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc512x/cpu_init.c b/arch/powerpc/cpu/mpc512x/cpu_init.c new file mode 100644 index 0000000..0e20ded --- /dev/null +++ b/arch/powerpc/cpu/mpc512x/cpu_init.c @@ -0,0 +1,212 @@ +/* + * Copyright (C) 2004-2006 Freescale Semiconductor, Inc. + * Copyright (C) 2007-2009 DENX Software Engineering + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + * + * Derived from the MPC83xx code. + * + */ + +#include <common.h> +#include <asm/io.h> +#include <asm/mpc512x.h> +#include <asm/processor.h> + +DECLARE_GLOBAL_DATA_PTR; + +/* + * Set up the memory map, initialize registers, + */ +void cpu_init_f (volatile immap_t * im) +{ + u32 ips_div; + + /* Pointer is writable since we allocated a register for it */ + gd = (gd_t *) (CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_GBL_DATA_OFFSET); + + /* Clear initial global data */ + memset ((void *) gd, 0, sizeof (gd_t)); + + /* Local Window and chip select configuration */ +#if defined(CONFIG_SYS_CS0_START) && defined(CONFIG_SYS_CS0_SIZE) + out_be32(&im->sysconf.lpcs0aw, + CSAW_START(CONFIG_SYS_CS0_START) | + CSAW_STOP(CONFIG_SYS_CS0_START, CONFIG_SYS_CS0_SIZE)); + sync_law(&im->sysconf.lpcs0aw); +#endif +#if defined(CONFIG_SYS_CS0_CFG) + out_be32(&im->lpc.cs_cfg[0], CONFIG_SYS_CS0_CFG); +#endif + +#if defined(CONFIG_SYS_CS1_START) && defined(CONFIG_SYS_CS1_SIZE) + out_be32(&im->sysconf.lpcs1aw, + CSAW_START(CONFIG_SYS_CS1_START) | + CSAW_STOP(CONFIG_SYS_CS1_START, CONFIG_SYS_CS1_SIZE)); + sync_law(&im->sysconf.lpcs1aw); +#endif +#if defined(CONFIG_SYS_CS1_CFG) + out_be32(&im->lpc.cs_cfg[1], CONFIG_SYS_CS1_CFG); +#endif + +#if defined(CONFIG_SYS_CS2_START) && (defined CONFIG_SYS_CS2_SIZE) + out_be32(&im->sysconf.lpcs2aw, + CSAW_START(CONFIG_SYS_CS2_START) | + CSAW_STOP(CONFIG_SYS_CS2_START, CONFIG_SYS_CS2_SIZE)); + sync_law(&im->sysconf.lpcs2aw); +#endif +#if defined(CONFIG_SYS_CS2_CFG) + out_be32(&im->lpc.cs_cfg[2], CONFIG_SYS_CS2_CFG); +#endif + +#if defined(CONFIG_SYS_CS3_START) && defined(CONFIG_SYS_CS3_SIZE) + out_be32(&im->sysconf.lpcs3aw, + CSAW_START(CONFIG_SYS_CS3_START) | + CSAW_STOP(CONFIG_SYS_CS3_START, CONFIG_SYS_CS3_SIZE)); + sync_law(&im->sysconf.lpcs3aw); +#endif +#if defined(CONFIG_SYS_CS3_CFG) + out_be32(&im->lpc.cs_cfg[3], CONFIG_SYS_CS3_CFG); +#endif + +#if defined(CONFIG_SYS_CS4_START) && defined(CONFIG_SYS_CS4_SIZE) + out_be32(&im->sysconf.lpcs4aw, + CSAW_START(CONFIG_SYS_CS4_START) | + CSAW_STOP(CONFIG_SYS_CS4_START, CONFIG_SYS_CS4_SIZE)); + sync_law(&im->sysconf.lpcs4aw); +#endif +#if defined(CONFIG_SYS_CS4_CFG) + out_be32(&im->lpc.cs_cfg[4], CONFIG_SYS_CS4_CFG); +#endif + +#if defined(CONFIG_SYS_CS5_START) && defined(CONFIG_SYS_CS5_SIZE) + out_be32(&im->sysconf.lpcs5aw, + CSAW_START(CONFIG_SYS_CS5_START) | + CSAW_STOP(CONFIG_SYS_CS5_START, CONFIG_SYS_CS5_SIZE)); + sync_law(&im->sysconf.lpcs5aw); +#endif +#if defined(CONFIG_SYS_CS5_CFG) + out_be32(&im->lpc.cs_cfg[5], CONFIG_SYS_CS5_CFG); +#endif + +#if defined(CONFIG_SYS_CS6_START) && defined(CONFIG_SYS_CS6_SIZE) + out_be32(&im->sysconf.lpcs6aw, + CSAW_START(CONFIG_SYS_CS6_START) | + CSAW_STOP(CONFIG_SYS_CS6_START, CONFIG_SYS_CS6_SIZE)); + sync_law(&im->sysconf.lpcs6aw); +#endif +#if defined(CONFIG_SYS_CS6_CFG) + out_be32(&im->lpc.cs_cfg[6], CONFIG_SYS_CS6_CFG); +#endif + +#if defined(CONFIG_SYS_CS7_START) && defined(CONFIG_SYS_CS7_SIZE) + out_be32(&im->sysconf.lpcs7aw, + CSAW_START(CONFIG_SYS_CS7_START) | + CSAW_STOP(CONFIG_SYS_CS7_START, CONFIG_SYS_CS7_SIZE)); + sync_law(&im->sysconf.lpcs7aw); +#endif +#if defined(CONFIG_SYS_CS7_CFG) + out_be32(&im->lpc.cs_cfg[7], CONFIG_SYS_CS7_CFG); +#endif + +#if defined CONFIG_SYS_CS_ALETIMING + if (SVR_MJREV(in_be32(&im->sysconf.spridr)) >= 2) + out_be32(&im->lpc.altr, CONFIG_SYS_CS_ALETIMING); +#endif +#if defined CONFIG_SYS_CS_BURST + out_be32(&im->lpc.cs_bcr, CONFIG_SYS_CS_BURST); +#endif +#if defined CONFIG_SYS_CS_DEADCYCLE + out_be32(&im->lpc.cs_dccr, CONFIG_SYS_CS_DEADCYCLE); +#endif +#if defined CONFIG_SYS_CS_HOLDCYCLE + out_be32(&im->lpc.cs_hccr, CONFIG_SYS_CS_HOLDCYCLE); +#endif + + /* system performance tweaking */ + +#ifdef CONFIG_SYS_ACR_PIPE_DEP + /* Arbiter pipeline depth */ + out_be32(&im->arbiter.acr, + (im->arbiter.acr & ~ACR_PIPE_DEP) | + (CONFIG_SYS_ACR_PIPE_DEP << ACR_PIPE_DEP_SHIFT) + ); +#endif + +#ifdef CONFIG_SYS_ACR_RPTCNT + /* Arbiter repeat count */ + out_be32(im->arbiter.acr, + (im->arbiter.acr & ~(ACR_RPTCNT)) | + (CONFIG_SYS_ACR_RPTCNT << ACR_RPTCNT_SHIFT) + ); +#endif + + /* RSR - Reset Status Register - clear all status */ + gd->arch.reset_status = im->reset.rsr; + out_be32(&im->reset.rsr, ~RSR_RES); + + /* + * RMR - Reset Mode Register - enable checkstop reset + */ + out_be32(&im->reset.rmr, RMR_CSRE & (1 << RMR_CSRE_SHIFT)); + + /* Set IPS-CSB divider: IPS = 1/2 CSB */ + ips_div = in_be32(&im->clk.scfr[0]); + ips_div &= ~(SCFR1_IPS_DIV_MASK); + ips_div |= SCFR1_IPS_DIV << SCFR1_IPS_DIV_SHIFT; + out_be32(&im->clk.scfr[0], ips_div); + +#ifdef SCFR1_LPC_DIV + clrsetbits_be32(&im->clk.scfr[0], SCFR1_LPC_DIV_MASK, + SCFR1_LPC_DIV << SCFR1_LPC_DIV_SHIFT); +#endif + +#ifdef SCFR1_NFC_DIV + clrsetbits_be32(&im->clk.scfr[0], SCFR1_NFC_DIV_MASK, + SCFR1_NFC_DIV << SCFR1_NFC_DIV_SHIFT); +#endif + +#ifdef SCFR1_DIU_DIV + clrsetbits_be32(&im->clk.scfr[0], SCFR1_DIU_DIV_MASK, + SCFR1_DIU_DIV << SCFR1_DIU_DIV_SHIFT); +#endif + + /* + * Enable Time Base/Decrementer + * + * NOTICE: TB needs to be enabled as early as possible in order to + * have udelay() working; if not enabled, usually leads to a hang, like + * during FLASH chip identification etc. + */ + setbits_be32(&im->sysconf.spcr, SPCR_TBEN); + + /* + * Enable clocks + */ + out_be32(&im->clk.sccr[0], SCCR1_CLOCKS_EN); + out_be32(&im->clk.sccr[1], SCCR2_CLOCKS_EN); +#if defined(CONFIG_FSL_IIM) || defined(CONFIG_CMD_FUSE) + setbits_be32(&im->clk.sccr[1], CLOCK_SCCR2_IIM_EN); +#endif +} + +int cpu_init_r (void) +{ + return 0; +} |
