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/*
* (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 <common.h>
#include <watchdog.h>
#include <asm/processor.h>
#include <ioports.h>
#include <asm/io.h>
#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)
{
DECLARE_GLOBAL_DATA_PTR;
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 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(CONFIG_MPC85xx)
#if defined(CFG_BR2_PRELIM) && defined(CFG_OR2_PRELIM)
memctl->or2 = CFG_OR2_PRELIM;
memctl->br2 = CFG_BR2_PRELIM;
#endif
#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
}
/*
* We initialize L2 as cache here.
*/
int cpu_init_r (void)
{
#if defined(CONFIG_L2_CACHE)
volatile immap_t *immap = (immap_t *)CFG_IMMR;
volatile ccsr_l2cache_t *l2cache = &immap->im_l2cache;
volatile uint temp;
asm("msync;isync");
temp = l2cache->l2ctl;
temp &= 0x30000000;
switch ( temp ) {
case 0x20000000:
printf ("L2 cache 256KB:");
break;
case 0x00000000:
case 0x10000000:
case 0x30000000:
default:
printf ("L2 cache unknown size. Check the silicon!\n");
return -1;
}
asm("msync;isync");
l2cache->l2ctl = 0x68000000; /* invalidate */
temp = l2cache->l2ctl;
asm("msync;isync");
l2cache->l2ctl = 0xa8000000; /* enable 256KB L2 cache */
temp = l2cache->l2ctl;
asm("msync;isync");
printf("enabled\n");
#else
printf("L2: disabled.\n");
#endif
return 0;
}
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