/* * Copyright 2007 Freescale Semiconductor. * * (C) Copyright 2003 Motorola Inc. * Modified by Xianghua Xiao, X.Xiao@motorola.com * * (C) Copyright 2000 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * 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 */ #include #include #include #include #include DECLARE_GLOBAL_DATA_PTR; #ifdef CONFIG_CPM2 static void config_8560_ioports (volatile immap_t * immr) { int portnum; for (portnum = 0; portnum < 4; portnum++) { uint pmsk = 0, ppar = 0, psor = 0, pdir = 0, podr = 0, pdat = 0; iop_conf_t *iopc = (iop_conf_t *) & iop_conf_tab[portnum][0]; iop_conf_t *eiopc = iopc + 32; uint msk = 1; /* * NOTE: * index 0 refers to pin 31, * index 31 refers to pin 0 */ while (iopc < eiopc) { if (iopc->conf) { pmsk |= msk; if (iopc->ppar) ppar |= msk; if (iopc->psor) psor |= msk; if (iopc->pdir) pdir |= msk; if (iopc->podr) podr |= msk; if (iopc->pdat) pdat |= msk; } msk <<= 1; iopc++; } if (pmsk != 0) { volatile ioport_t *iop = ioport_addr (immr, portnum); uint tpmsk = ~pmsk; /* * the (somewhat confused) paragraph at the * bottom of page 35-5 warns that there might * be "unknown behaviour" when programming * PSORx and PDIRx, if PPARx = 1, so I * decided this meant I had to disable the * dedicated function first, and enable it * last. */ iop->ppar &= tpmsk; iop->psor = (iop->psor & tpmsk) | psor; iop->podr = (iop->podr & tpmsk) | podr; iop->pdat = (iop->pdat & tpmsk) | pdat; iop->pdir = (iop->pdir & tpmsk) | pdir; iop->ppar |= ppar; } } } #endif /* * Breathe some life into the CPU... * * Set up the memory map * initialize a bunch of registers */ void cpu_init_f (void) { volatile immap_t *immap = (immap_t *)CFG_IMMR; volatile ccsr_lbc_t *memctl = &immap->im_lbc; extern void m8560_cpm_reset (void); /* Pointer is writable since we allocated a register for it */ gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET); /* Clear initial global data */ memset ((void *) gd, 0, sizeof (gd_t)); #ifdef CONFIG_CPM2 config_8560_ioports(immap); #endif /* Map banks 0 and 1 to the FLASH banks 0 and 1 at preliminary * addresses - these have to be modified later when FLASH size * has been determined */ #if defined(CFG_OR0_REMAP) memctl->or0 = CFG_OR0_REMAP; #endif #if defined(CFG_OR1_REMAP) memctl->or1 = CFG_OR1_REMAP; #endif /* now restrict to preliminary range */ /* if cs1 is already set via debugger, leave cs0/cs1 alone */ if (! memctl->br1 & 1) { #if defined(CFG_BR0_PRELIM) && defined(CFG_OR0_PRELIM) memctl->br0 = CFG_BR0_PRELIM; memctl->or0 = CFG_OR0_PRELIM; #endif #if defined(CFG_BR1_PRELIM) && defined(CFG_OR1_PRELIM) memctl->or1 = CFG_OR1_PRELIM; memctl->br1 = CFG_BR1_PRELIM; #endif } #if defined(CFG_BR2_PRELIM) && defined(CFG_OR2_PRELIM) memctl->or2 = CFG_OR2_PRELIM; memctl->br2 = CFG_BR2_PRELIM; #endif #if defined(CFG_BR3_PRELIM) && defined(CFG_OR3_PRELIM) memctl->or3 = CFG_OR3_PRELIM; memctl->br3 = CFG_BR3_PRELIM; #endif #if defined(CFG_BR4_PRELIM) && defined(CFG_OR4_PRELIM) memctl->or4 = CFG_OR4_PRELIM; memctl->br4 = CFG_BR4_PRELIM; #endif #if defined(CFG_BR5_PRELIM) && defined(CFG_OR5_PRELIM) memctl->or5 = CFG_OR5_PRELIM; memctl->br5 = CFG_BR5_PRELIM; #endif #if defined(CFG_BR6_PRELIM) && defined(CFG_OR6_PRELIM) memctl->or6 = CFG_OR6_PRELIM; memctl->br6 = CFG_BR6_PRELIM; #endif #if defined(CFG_BR7_PRELIM) && defined(CFG_OR7_PRELIM) memctl->or7 = CFG_OR7_PRELIM; memctl->br7 = CFG_BR7_PRELIM; #endif #if defined(CONFIG_CPM2) m8560_cpm_reset(); #endif } /* * Initialize L2 as cache. * * The newer 8548, etc, parts have twice as much cache, but * use the same bit-encoding as the older 8555, etc, parts. * */ int cpu_init_r(void) { #if defined(CONFIG_CLEAR_LAW0) || defined(CONFIG_L2_CACHE) volatile immap_t *immap = (immap_t *)CFG_IMMR; #endif #ifdef CONFIG_CLEAR_LAW0 volatile ccsr_local_ecm_t *ecm = &immap->im_local_ecm; /* clear alternate boot location LAW (used for sdram, or ddr bank) */ ecm->lawar0 = 0; #endif #if defined(CONFIG_L2_CACHE) volatile ccsr_l2cache_t *l2cache = &immap->im_l2cache; volatile uint cache_ctl; uint svr, ver; uint l2srbar; svr = get_svr(); ver = SVR_VER(svr); asm("msync;isync"); cache_ctl = l2cache->l2ctl; switch (cache_ctl & 0x30000000) { case 0x20000000: if (ver == SVR_8548 || ver == SVR_8548_E || ver == SVR_8544) { printf ("L2 cache 512KB:"); /* set L2E=1, L2I=1, & L2SRAM=0 */ cache_ctl = 0xc0000000; } else { printf ("L2 cache 256KB:"); /* set L2E=1, L2I=1, & L2BLKSZ=2 (256 Kbyte) */ cache_ctl = 0xc8000000; } break; case 0x10000000: printf ("L2 cache 256KB:"); if (ver == SVR_8544 || ver == SVR_8544_E) { cache_ctl = 0xc0000000; /* set L2E=1, L2I=1, & L2SRAM=0 */ } break; case 0x30000000: case 0x00000000: default: printf ("L2 cache unknown size (0x%08x)\n", cache_ctl); return -1; } if (l2cache->l2ctl & 0x80000000) { printf(" already enabled."); l2srbar = l2cache->l2srbar0; #ifdef CFG_INIT_L2_ADDR if (l2cache->l2ctl & 0x00010000 && l2srbar >= CFG_FLASH_BASE) { l2srbar = CFG_INIT_L2_ADDR; l2cache->l2srbar0 = l2srbar; printf(" Moving to 0x%08x", CFG_INIT_L2_ADDR); } #endif /* CFG_INIT_L2_ADDR */ puts("\n"); } else { asm("msync;isync"); l2cache->l2ctl = cache_ctl; /* invalidate & enable */ asm("msync;isync"); printf(" enabled\n"); } #else printf("L2 cache: disabled\n"); #endif return 0; }