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/*
* (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Andreas Heppel <aheppel@sysgo.de>
* (C) Copyright 2001 ELTEC Elektronik AG
* Frank Gottschling <fgottschling@eltec.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 <command.h>
#include <mpc106.h>
#include <mk48t59.h>
#include <74xx_7xx.h>
#include <ns87308.h>
#include <video_fb.h>
/*---------------------------------------------------------------------------*/
/*
* Get Bus clock frequency
*/
ulong bab7xx_get_bus_freq (void)
{
/*
* The GPIO Port 1 on BAB7xx reflects the bus speed.
*/
volatile struct GPIO *gpio =
(struct GPIO *) (CFG_ISA_IO + CFG_NS87308_GPIO_BASE);
unsigned char data = gpio->dta1;
if (data & 0x02)
return 66666666;
return 83333333;
}
/*---------------------------------------------------------------------------*/
/*
* Measure CPU clock speed (core clock GCLK1) (Approx. GCLK frequency in Hz)
*/
ulong bab7xx_get_gclk_freq (void)
{
static const int pllratio_to_factor[] = {
00, 75, 70, 00, 20, 65, 100, 45, 30, 55, 40, 50, 80, 60, 35,
00,
};
return pllratio_to_factor[get_hid1 () >> 28] *
(bab7xx_get_bus_freq () / 10);
}
/*----------------------------------------------------------------------------*/
int checkcpu (void)
{
uint pvr = get_pvr ();
printf ("MPC7xx V%d.%d", (pvr >> 8) & 0xFF, pvr & 0xFF);
printf (" at %ld / %ld MHz\n", bab7xx_get_gclk_freq () / 1000000,
bab7xx_get_bus_freq () / 1000000);
return (0);
}
/* ------------------------------------------------------------------------- */
int checkboard (void)
{
#ifdef CFG_ADDRESS_MAP_A
puts ("Board: ELTEC BAB7xx PReP\n");
#else
puts ("Board: ELTEC BAB7xx CHRP\n");
#endif
return (0);
}
/* ------------------------------------------------------------------------- */
int checkflash (void)
{
/* TODO: XXX XXX XXX */
printf ("2 MB ## Test not implemented yet ##\n");
return (0);
}
/* ------------------------------------------------------------------------- */
static unsigned int mpc106_read_cfg_dword (unsigned int reg)
{
unsigned int reg_addr = MPC106_REG | (reg & 0xFFFFFFFC);
out32r (MPC106_REG_ADDR, reg_addr);
return (in32r (MPC106_REG_DATA | (reg & 0x3)));
}
/* ------------------------------------------------------------------------- */
long int dram_size (int board_type)
{
/* No actual initialisation to do - done when setting up
* PICRs MCCRs ME/SARs etc in ram_init.S.
*/
register unsigned long i, msar1, mear1, memSize;
#if defined(CFG_MEMTEST)
register unsigned long reg;
printf ("Testing DRAM\n");
/* write each mem addr with it's address */
for (reg = CFG_MEMTEST_START; reg < CFG_MEMTEST_END; reg += 4)
*reg = reg;
for (reg = CFG_MEMTEST_START; reg < CFG_MEMTEST_END; reg += 4) {
if (*reg != reg)
return -1;
}
#endif
/*
* Since MPC106 memory controller chip has already been set to
* control all memory, just read and interpret its memory boundery register.
*/
memSize = 0;
msar1 = mpc106_read_cfg_dword (MPC106_MSAR1);
mear1 = mpc106_read_cfg_dword (MPC106_MEAR1);
i = mpc106_read_cfg_dword (MPC106_MBER) & 0xf;
do {
if (i & 0x01) /* is bank enabled ? */
memSize += (mear1 & 0xff) - (msar1 & 0xff) + 1;
msar1 >>= 8;
mear1 >>= 8;
i >>= 1;
} while (i);
return (memSize * 0x100000);
}
/* ------------------------------------------------------------------------- */
long int initdram (int board_type)
{
return dram_size (board_type);
}
/* ------------------------------------------------------------------------- */
void after_reloc (ulong dest_addr)
{
DECLARE_GLOBAL_DATA_PTR;
/*
* Jump to the main U-Boot board init code
*/
board_init_r ((gd_t *) gd, dest_addr);
}
/* ------------------------------------------------------------------------- */
/*
* do_reset is done here because in this case it is board specific, since the
* 7xx CPUs can only be reset by external HW (the RTC in this case).
*/
void do_reset (cmd_tbl_t * cmdtp, bd_t * bd, int flag, int argc, char *argv[])
{
#if defined(CONFIG_RTC_MK48T59)
/* trigger watchdog immediately */
rtc_set_watchdog (1, RTC_WD_RB_16TH);
#else
#error "You must define the macro CONFIG_RTC_MK48T59."
#endif
}
/* ------------------------------------------------------------------------- */
#if defined(CONFIG_WATCHDOG)
/*
* Since the 7xx CPUs don't have an internal watchdog, this function is
* board specific. We use the RTC here.
*/
void watchdog_reset (void)
{
#if defined(CONFIG_RTC_MK48T59)
/* we use a 32 sec watchdog timer */
rtc_set_watchdog (8, RTC_WD_RB_4);
#else
#error "You must define the macro CONFIG_RTC_MK48T59."
#endif
}
#endif /* CONFIG_WATCHDOG */
/* ------------------------------------------------------------------------- */
#ifdef CONFIG_CONSOLE_EXTRA_INFO
extern GraphicDevice smi;
void video_get_info_str (int line_number, char *info)
{
/* init video info strings for graphic console */
switch (line_number) {
case 1:
sprintf (info, " MPC7xx V%d.%d at %ld / %ld MHz",
(get_pvr () >> 8) & 0xFF,
get_pvr () & 0xFF,
bab7xx_get_gclk_freq () / 1000000,
bab7xx_get_bus_freq () / 1000000);
return;
case 2:
sprintf (info,
" ELTEC BAB7xx with %ld MB DRAM and %ld MB FLASH",
dram_size (0) / 0x100000, flash_init () / 0x100000);
return;
case 3:
sprintf (info, " %s", smi.modeIdent);
return;
}
/* no more info lines */
*info = 0;
return;
}
#endif
/*---------------------------------------------------------------------------*/
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