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u-boot-brain/board/keymile/mgcoge/mgcoge.c
Andreas Huber 91a3c14cd0 ppc, mgcoge: add DIP switch detection 
This reads the DIP switch on mgcoge. The DIP switch is connected to
the BFTICU (0x40000089) FPGA. If the DIP switch is set the environment
variable 'actual_bank' is set to 0 and starts the SW in bank0.

Signed-off-by: Andreas Huber <andreas.huber@keymile.com>
Signed-off-by: Holger Brunck <holger.brunck@keymile.com>
2011-04-11 22:41:37 +02:00

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/*
* (C) Copyright 2007 - 2008
* Heiko Schocher, DENX Software Engineering, hs@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 <mpc8260.h>
#include <ioports.h>
#include <malloc.h>
#include <asm/io.h>
#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
#include <libfdt.h>
#endif
#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
#include <i2c.h>
#endif
#include "../common/common.h"
/*
* I/O Port configuration table
*
* if conf is 1, then that port pin will be configured at boot time
* according to the five values podr/pdir/ppar/psor/pdat for that entry
*/
const iop_conf_t iop_conf_tab[4][32] = {
/* Port A */
{ /* conf ppar psor pdir podr pdat */
/* PA31 */ { 0, 0, 0, 0, 0, 0 }, /* PA31 */
/* PA30 */ { 0, 0, 0, 0, 0, 0 }, /* PA30 */
/* PA29 */ { 0, 0, 0, 0, 0, 0 }, /* PA29 */
/* PA28 */ { 0, 0, 0, 0, 0, 0 }, /* PA28 */
/* PA27 */ { 0, 0, 0, 0, 0, 0 }, /* PA27 */
/* PA26 */ { 0, 0, 0, 0, 0, 0 }, /* PA26 */
/* PA25 */ { 0, 0, 0, 0, 0, 0 }, /* PA25 */
/* PA24 */ { 0, 0, 0, 0, 0, 0 }, /* PA24 */
/* PA23 */ { 0, 0, 0, 0, 0, 0 }, /* PA23 */
/* PA22 */ { 0, 0, 0, 0, 0, 0 }, /* PA22 */
/* PA21 */ { 0, 0, 0, 0, 0, 0 }, /* PA21 */
/* PA20 */ { 0, 0, 0, 0, 0, 0 }, /* PA20 */
/* PA19 */ { 0, 0, 0, 0, 0, 0 }, /* PA19 */
/* PA18 */ { 0, 0, 0, 0, 0, 0 }, /* PA18 */
/* PA17 */ { 0, 0, 0, 0, 0, 0 }, /* PA17 */
/* PA16 */ { 0, 0, 0, 0, 0, 0 }, /* PA16 */
/* PA15 */ { 0, 0, 0, 0, 0, 0 }, /* PA15 */
/* PA14 */ { 0, 0, 0, 0, 0, 0 }, /* PA14 */
/* PA13 */ { 0, 0, 0, 0, 0, 0 }, /* PA13 */
/* PA12 */ { 0, 0, 0, 0, 0, 0 }, /* PA12 */
/* PA11 */ { 0, 0, 0, 0, 0, 0 }, /* PA11 */
/* PA10 */ { 0, 0, 0, 0, 0, 0 }, /* PA10 */
/* PA9 */ { 1, 1, 0, 1, 0, 0 }, /* SMC2 TxD */
/* PA8 */ { 1, 1, 0, 0, 0, 0 }, /* SMC2 RxD */
/* PA7 */ { 0, 0, 0, 0, 0, 0 }, /* PA7 */
/* PA6 */ { 0, 0, 0, 0, 0, 0 }, /* PA6 */
/* PA5 */ { 0, 0, 0, 0, 0, 0 }, /* PA5 */
/* PA4 */ { 0, 0, 0, 0, 0, 0 }, /* PA4 */
/* PA3 */ { 0, 0, 0, 0, 0, 0 }, /* PA3 */
/* PA2 */ { 0, 0, 0, 0, 0, 0 }, /* PA2 */
/* PA1 */ { 0, 0, 0, 0, 0, 0 }, /* PA1 */
/* PA0 */ { 0, 0, 0, 0, 0, 0 } /* PA0 */
},
/* Port B */
{ /* conf ppar psor pdir podr pdat */
/* PB31 */ { 0, 0, 0, 0, 0, 0 }, /* PB31 */
/* PB30 */ { 0, 0, 0, 0, 0, 0 }, /* PB30 */
/* PB29 */ { 0, 0, 0, 0, 0, 0 }, /* PB29 */
/* PB28 */ { 0, 0, 0, 0, 0, 0 }, /* PB28 */
/* PB27 */ { 0, 0, 0, 0, 0, 0 }, /* PB27 */
/* PB26 */ { 0, 0, 0, 0, 0, 0 }, /* PB26 */
/* PB25 */ { 0, 0, 0, 0, 0, 0 }, /* PB25 */
/* PB24 */ { 0, 0, 0, 0, 0, 0 }, /* PB24 */
/* PB23 */ { 0, 0, 0, 0, 0, 0 }, /* PB23 */
/* PB22 */ { 0, 0, 0, 0, 0, 0 }, /* PB22 */
/* PB21 */ { 0, 0, 0, 0, 0, 0 }, /* PB21 */
/* PB20 */ { 0, 0, 0, 0, 0, 0 }, /* PB20 */
/* PB19 */ { 0, 0, 0, 0, 0, 0 }, /* PB19 */
/* PB18 */ { 0, 0, 0, 0, 0, 0 }, /* PB18 */
/* PB17 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PB16 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PB15 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PB14 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PB13 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PB12 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PB11 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PB10 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PB9 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PB8 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PB7 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PB6 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PB5 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PB4 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PB3 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PB2 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PB1 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PB0 */ { 0, 0, 0, 0, 0, 0 } /* non-existent */
},
/* Port C */
{ /* conf ppar psor pdir podr pdat */
/* PC31 */ { 0, 0, 0, 0, 0, 0 }, /* PC31 */
/* PC30 */ { 0, 0, 0, 0, 0, 0 }, /* PC30 */
/* PC29 */ { 0, 0, 0, 0, 0, 0 }, /* PC29 */
/* PC28 */ { 0, 0, 0, 0, 0, 0 }, /* PC28 */
/* PC27 */ { 0, 0, 0, 0, 0, 0 }, /* PC27 */
/* PC26 */ { 0, 0, 0, 0, 0, 0 }, /* PC26 */
/* PC25 */ { 1, 1, 0, 0, 0, 0 }, /* SCC4 RxClk */
/* PC24 */ { 1, 1, 0, 0, 0, 0 }, /* SCC4 TxClk */
/* PC23 */ { 0, 0, 0, 0, 0, 0 }, /* PC23 */
/* PC22 */ { 0, 0, 0, 0, 0, 0 }, /* PC22 */
/* PC21 */ { 0, 0, 0, 0, 0, 0 }, /* PC21 */
/* PC20 */ { 0, 0, 0, 0, 0, 0 }, /* PC20 */
/* PC19 */ { 0, 0, 0, 0, 0, 0 }, /* PC19 */
/* PC18 */ { 0, 0, 0, 0, 0, 0 }, /* PC18 */
/* PC17 */ { 0, 0, 0, 0, 0, 0 }, /* PC17 */
/* PC16 */ { 0, 0, 0, 0, 0, 0 }, /* PC16 */
/* PC15 */ { 0, 0, 0, 0, 0, 0 }, /* PC15 */
/* PC14 */ { 0, 0, 0, 0, 0, 0 }, /* PC14 */
/* PC13 */ { 0, 0, 0, 0, 0, 0 }, /* PC13 */
/* PC12 */ { 0, 0, 0, 0, 0, 0 }, /* PC12 */
/* PC11 */ { 0, 0, 0, 0, 0, 0 }, /* PC11 */
/* PC10 */ { 0, 0, 0, 0, 0, 0 }, /* PC10 */
/* PC9 */ { 1, 1, 0, 0, 0, 0 }, /* SCC4: CTS */
/* PC8 */ { 1, 1, 0, 0, 0, 0 }, /* SCC4: CD */
/* PC7 */ { 0, 0, 0, 0, 0, 0 }, /* PC7 */
/* PC6 */ { 0, 0, 0, 0, 0, 0 }, /* PC6 */
/* PC5 */ { 0, 0, 0, 0, 0, 0 }, /* PC5 */
/* PC4 */ { 0, 0, 0, 0, 0, 0 }, /* PC4 */
/* PC3 */ { 0, 0, 0, 0, 0, 0 }, /* PC3 */
/* PC2 */ { 0, 0, 0, 0, 0, 0 }, /* PC2 */
/* PC1 */ { 0, 0, 0, 0, 0, 0 }, /* PC1 */
/* PC0 */ { 0, 0, 0, 0, 0, 0 }, /* PC0 */
},
/* Port D */
{ /* conf ppar psor pdir podr pdat */
/* PD31 */ { 0, 0, 0, 0, 0, 0 }, /* PD31 */
/* PD30 */ { 0, 0, 0, 0, 0, 0 }, /* PD30 */
/* PD29 */ { 0, 0, 0, 0, 0, 0 }, /* PD29 */
/* PD28 */ { 0, 0, 0, 0, 0, 0 }, /* PD28 */
/* PD27 */ { 0, 0, 0, 0, 0, 0 }, /* PD27 */
/* PD26 */ { 0, 0, 0, 0, 0, 0 }, /* PD26 */
/* PD25 */ { 0, 0, 0, 0, 0, 0 }, /* PD25 */
/* PD24 */ { 0, 0, 0, 0, 0, 0 }, /* PD24 */
/* PD23 */ { 0, 0, 0, 0, 0, 0 }, /* PD23 */
/* PD22 */ { 1, 1, 0, 0, 0, 0 }, /* SCC4: RXD */
/* PD21 */ { 1, 1, 0, 1, 0, 0 }, /* SCC4: TXD */
/* PD20 */ { 1, 1, 0, 1, 0, 0 }, /* SCC4: RTS */
/* PD19 */ { 0, 0, 0, 0, 0, 0 }, /* PD19 */
/* PD18 */ { 0, 0, 0, 0, 0, 0 }, /* PD18 */
/* PD17 */ { 0, 0, 0, 0, 0, 0 }, /* PD17 */
/* PD16 */ { 0, 0, 0, 0, 0, 0 }, /* PD16 */
#if defined(CONFIG_HARD_I2C)
/* PD15 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SDA */
/* PD14 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SCL */
#else
/* PD15 */ { 1, 0, 0, 0, 1, 1 }, /* PD15 */
/* PD14 */ { 1, 0, 0, 1, 1, 1 }, /* PD14 */
#endif
/* PD13 */ { 0, 0, 0, 0, 0, 0 }, /* PD13 */
/* PD12 */ { 0, 0, 0, 0, 0, 0 }, /* PD12 */
/* PD11 */ { 0, 0, 0, 0, 0, 0 }, /* PD11 */
/* PD10 */ { 0, 0, 0, 0, 0, 0 }, /* PD10 */
/* PD9 */ { 0, 0, 0, 0, 0, 0 }, /* PD9 */
/* PD8 */ { 0, 0, 0, 0, 0, 0 }, /* PD8 */
/* PD7 */ { 0, 0, 0, 0, 0, 0 }, /* PD7 */
/* PD6 */ { 0, 0, 0, 0, 0, 0 }, /* PD6 */
/* PD5 */ { 0, 0, 0, 0, 0, 0 }, /* PD5 */
/* PD4 */ { 0, 0, 0, 0, 0, 0 }, /* PD4 */
/* PD3 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PD2 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PD1 */ { 0, 0, 0, 0, 0, 0 }, /* non-existent */
/* PD0 */ { 0, 0, 0, 0, 0, 0 } /* non-existent */
}
};
/* Try SDRAM initialization with P/LSDMR=sdmr and ORx=orx
*
* This routine performs standard 8260 initialization sequence
* and calculates the available memory size. It may be called
* several times to try different SDRAM configurations on both
* 60x and local buses.
*/
static long int try_init (volatile memctl8260_t * memctl, ulong sdmr,
ulong orx, volatile uchar * base)
{
volatile uchar c = 0xff;
volatile uint *sdmr_ptr;
volatile uint *orx_ptr;
ulong maxsize, size;
int i;
/* We must be able to test a location outsize the maximum legal size
* to find out THAT we are outside; but this address still has to be
* mapped by the controller. That means, that the initial mapping has
* to be (at least) twice as large as the maximum expected size.
*/
maxsize = (1 + (~orx | 0x7fff))/* / 2*/;
sdmr_ptr = &memctl->memc_psdmr;
orx_ptr = &memctl->memc_or1;
*orx_ptr = orx;
/*
* Quote from 8260 UM (10.4.2 SDRAM Power-On Initialization, 10-35):
*
* "At system reset, initialization software must set up the
* programmable parameters in the memory controller banks registers
* (ORx, BRx, P/LSDMR). After all memory parameters are configured,
* system software should execute the following initialization sequence
* for each SDRAM device.
*
* 1. Issue a PRECHARGE-ALL-BANKS command
* 2. Issue eight CBR REFRESH commands
* 3. Issue a MODE-SET command to initialize the mode register
*
* The initial commands are executed by setting P/LSDMR[OP] and
* accessing the SDRAM with a single-byte transaction."
*
* The appropriate BRx/ORx registers have already been set when we
* get here. The SDRAM can be accessed at the address CONFIG_SYS_SDRAM_BASE.
*/
*sdmr_ptr = sdmr | PSDMR_OP_PREA;
*base = c;
*sdmr_ptr = sdmr | PSDMR_OP_CBRR;
for (i = 0; i < 8; i++)
*base = c;
*sdmr_ptr = sdmr | PSDMR_OP_MRW;
*(base + CONFIG_SYS_MRS_OFFS) = c; /* setting MR on address lines */
*sdmr_ptr = sdmr | PSDMR_OP_NORM | PSDMR_RFEN;
*base = c;
size = get_ram_size ((long *)base, maxsize);
*orx_ptr = orx | ~(size - 1);
return (size);
}
phys_size_t initdram (int board_type)
{
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
volatile memctl8260_t *memctl = &immap->im_memctl;
long psize;
memctl->memc_psrt = CONFIG_SYS_PSRT;
memctl->memc_mptpr = CONFIG_SYS_MPTPR;
#ifndef CONFIG_SYS_RAMBOOT
/* 60x SDRAM setup:
*/
psize = try_init (memctl, CONFIG_SYS_PSDMR, CONFIG_SYS_OR1,
(uchar *) CONFIG_SYS_SDRAM_BASE);
#endif /* CONFIG_SYS_RAMBOOT */
icache_enable ();
return (psize);
}
int checkboard(void)
{
puts ("Board: Keymile mgcoge");
if (ethernet_present ())
puts (" with PIGGY.");
puts ("\n");
return 0;
}
#define DIPSWITCH_OFFSET 0x89
#define DIPSWITCH_MASK 0x0f
int last_stage_init(void)
{
u8 dip_switch;
/* Dip switch */
dip_switch = readb(CONFIG_SYS_BFTICU_BASE + DIPSWITCH_OFFSET);
dip_switch &= DIPSWITCH_MASK;
/* dip switch 'full reset' or 'db erase' */
if (dip_switch & 0x1 || dip_switch & 0x2) {
/* start bootloader */
puts("DIP: Enabled\n");
setenv("actual_bank", "0");
}
return 0;
}
/*
* Early board initalization.
*/
int board_early_init_r (void)
{
/* setup the UPIOx */
/* General Unit Reset disabled, Flash Bank enabled, UnitLed on */
out_8((u8 *)(CONFIG_SYS_PIGGY_BASE + 0x02), 0xc2);
/* SCC4 enable, halfduplex, FCC1 powerdown */
out_8((u8 *)(CONFIG_SYS_PIGGY_BASE + 0x03), 0x15);
return 0;
}
int hush_init_var (void)
{
ivm_read_eeprom ();
return 0;
}
#if defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT)
void ft_board_setup (void *blob, bd_t *bd)
{
ft_cpu_setup (blob, bd);
}
#endif /* defined(CONFIG_OF_BOARD_SETUP) && defined(CONFIG_OF_LIBFDT) */
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