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/*
* (C) Copyright 2000-2003
* 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
*/
/*
* CPU specific code for the MPC5xxx CPUs
*/
#include <common.h>
#include <watchdog.h>
#include <command.h>
#include <mpc5xxx.h>
#include <asm/io.h>
#include <asm/processor.h>
#if defined(CONFIG_OF_LIBFDT)
#include <libfdt.h>
#include <libfdt_env.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
int checkcpu (void)
{
ulong clock = gd->cpu_clk;
char buf[32];
#ifndef CONFIG_MGT5100
uint svr, pvr;
#endif
puts ("CPU: ");
#ifdef CONFIG_MGT5100
puts (CPU_ID_STR);
printf (" (JTAG ID %08lx)", *(vu_long *)MPC5XXX_CDM_JTAGID);
#else
svr = get_svr();
pvr = get_pvr();
switch (pvr) {
case PVR_5200:
printf("MPC5200");
break;
case PVR_5200B:
printf("MPC5200B");
break;
default:
printf("Unknown MPC5xxx");
break;
}
printf (" v%d.%d, Core v%d.%d", SVR_MJREV (svr), SVR_MNREV (svr),
PVR_MAJ(pvr), PVR_MIN(pvr));
#endif
printf (" at %s MHz\n", strmhz (buf, clock));
return 0;
}
/* ------------------------------------------------------------------------- */
int
do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
ulong msr;
/* Interrupts and MMU off */
__asm__ __volatile__ ("mfmsr %0":"=r" (msr):);
msr &= ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR);
__asm__ __volatile__ ("mtmsr %0"::"r" (msr));
/* Charge the watchdog timer */
*(vu_long *)(MPC5XXX_GPT0_COUNTER) = 0x0001000f;
*(vu_long *)(MPC5XXX_GPT0_ENABLE) = 0x9004; /* wden|ce|timer_ms */
while(1);
return 1;
}
/* ------------------------------------------------------------------------- */
/*
* Get timebase clock frequency (like cpu_clk in Hz)
*
*/
unsigned long get_tbclk (void)
{
ulong tbclk;
tbclk = (gd->bus_clk + 3L) / 4L;
return (tbclk);
}
/* ------------------------------------------------------------------------- */
#ifdef CONFIG_OF_LIBFDT
static void do_fixup(void *fdt, const char *node, const char *prop,
const void *val, int len, int create)
{
#if defined(DEBUG)
int i;
debug("Updating property '%s/%s' = ", node, prop);
for (i = 0; i < len; i++)
debug(" %.2x", *(u8*)(val+i));
debug("\n");
#endif
int rc = fdt_find_and_setprop(fdt, node, prop, val, len, create);
if (rc)
printf("Unable to update property %s:%s, err=%s\n",
node, prop, fdt_strerror(rc));
}
static void do_fixup_u32(void *fdt, const char *node, const char *prop,
u32 val, int create)
{
val = cpu_to_fdt32(val);
do_fixup(fdt, node, prop, &val, sizeof(val), create);
}
void ft_cpu_setup(void *blob, bd_t *bd)
{
int div = in_8((void*)CFG_MBAR + 0x204) & 0x0020 ? 8 : 4;
char * cpu_path = "/cpus/" OF_CPU;
char * eth_path = "/" OF_SOC "/ethernet@3000";
do_fixup_u32(blob, cpu_path, "timebase-frequency", OF_TBCLK, 1);
do_fixup_u32(blob, cpu_path, "bus-frequency", bd->bi_busfreq, 1);
do_fixup_u32(blob, cpu_path, "clock-frequency", bd->bi_intfreq, 1);
do_fixup_u32(blob, "/" OF_SOC, "bus-frequency", bd->bi_ipbfreq, 1);
do_fixup_u32(blob, "/" OF_SOC, "system-frequency",
bd->bi_busfreq*div, 1);
do_fixup(blob, eth_path, "mac-address", bd->bi_enetaddr, 6, 0);
do_fixup(blob, eth_path, "local-mac-address", bd->bi_enetaddr, 6, 0);
}
#endif
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