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upstream u-boot with additional patches for our devices/boards: https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ; Gbit ethernet patch for some LIME2 revisions ; with SPI flash support
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u-boot/board/ep8260/ep8260.c

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/*
* (C) Copyright 2001, 2002
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2002
* Frank Panno <fpanno@delphintech.com>, Delphin Technology AG
*
* 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 <ioports.h>
#include <mpc8260.h>
#include "ep8260.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 configuration */
{ /* conf ppar psor pdir podr pdat */
/* PA31 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA30 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA29 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA28 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA27 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA26 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA25 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA24 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA23 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA22 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA21 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA20 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA19 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA18 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA17 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA16 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA15 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA14 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA13 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA12 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA11 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA10 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PA9 */ { 0, 1, 0, 1, 0, 0 }, /* */
/* PA8 */ { 0, 1, 0, 0, 0, 0 }, /* */
/* PA7 */ { 0, 0, 0, 1, 0, 0 }, /* PA7 */
/* PA6 */ { 0, 0, 0, 1, 0, 0 }, /* PA6 */
/* PA5 */ { 0, 0, 0, 1, 0, 0 }, /* PA5 */
/* PA4 */ { 0, 0, 0, 1, 0, 0 }, /* PA4 */
/* PA3 */ { 0, 0, 0, 1, 0, 0 }, /* PA3 */
/* PA2 */ { 0, 0, 0, 1, 0, 0 }, /* PA2 */
/* PA1 */ { 0, 0, 0, 1, 0, 0 }, /* PA1 */
/* PA0 */ { 0, 0, 0, 1, 0, 0 } /* PA0 */
},
/* Port B configuration */
{ /* conf ppar psor pdir podr pdat */
/* PB31 */ { 0, 1, 0, 1, 0, 0 }, /* */
/* PB30 */ { 0, 1, 0, 0, 0, 0 }, /* */
/* PB29 */ { 0, 1, 1, 1, 0, 0 }, /* */
/* PB28 */ { 0, 1, 0, 0, 0, 0 }, /* */
/* PB27 */ { 0, 1, 0, 0, 0, 0 }, /* */
/* PB26 */ { 0, 1, 0, 0, 0, 0 }, /* */
/* PB25 */ { 0, 1, 0, 1, 0, 0 }, /* */
/* PB24 */ { 0, 1, 0, 1, 0, 0 }, /* */
/* PB23 */ { 0, 1, 0, 1, 0, 0 }, /* */
/* PB22 */ { 0, 1, 0, 1, 0, 0 }, /* */
/* PB21 */ { 0, 1, 0, 0, 0, 0 }, /* */
/* PB20 */ { 0, 1, 0, 0, 0, 0 }, /* */
/* PB19 */ { 0, 1, 0, 0, 0, 0 }, /* */
/* PB18 */ { 0, 1, 0, 0, 0, 0 }, /* */
/* PB17 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII RX_DV */
/* PB16 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII RX_ER */
/* PB15 */ { 1, 1, 0, 1, 0, 0 }, /* FCC3 MII TX_ER */
/* PB14 */ { 1, 1, 0, 1, 0, 0 }, /* FCC3 MII TX_EN */
/* PB13 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII COL */
/* PB12 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII CRS */
/* PB11 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII RxD[3] */
/* PB10 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII RxD[2] */
/* PB9 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII RxD[1] */
/* PB8 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII RxD[0] */
/* PB7 */ { 0, 0, 0, 0, 0, 0 }, /* PB7 */
/* PB6 */ { 1, 1, 0, 1, 0, 0 }, /* FCC3 MII TxD[1] */
/* PB5 */ { 1, 1, 0, 1, 0, 0 }, /* FCC3 MII TxD[2] */
/* PB4 */ { 1, 1, 0, 1, 0, 0 }, /* FCC3 MII TxD[3] */
/* PB3 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */
/* PB2 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */
/* PB1 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */
/* PB0 */ { 0, 0, 0, 0, 0, 0 } /* pin doesn't exist */
},
/* Port C */
{ /* conf ppar psor pdir podr pdat */
/* PC31 */ { 0, 0, 0, 1, 0, 0 }, /* PC31 */
/* PC30 */ { 0, 0, 0, 1, 0, 0 }, /* PC30 */
/* PC29 */ { 0, 1, 1, 0, 0, 0 }, /* */
/* PC28 */ { 0, 0, 0, 1, 0, 0 }, /* PC28 */
/* PC27 */ { 1, 1, 0, 1, 0, 0 }, /* FCC3 MII TxD[0] */
/* PC26 */ { 0, 0, 0, 1, 0, 0 }, /* PC26 */
/* PC25 */ { 0, 0, 0, 1, 0, 0 }, /* PC25 */
/* PC24 */ { 0, 0, 0, 1, 0, 0 }, /* PC24 */
/* PC23 */ { 0, 1, 0, 1, 0, 0 }, /* */
/* PC22 */ { 0, 1, 0, 0, 0, 0 }, /* */
/* PC21 */ { 0, 1, 0, 0, 0, 0 }, /* */
/* PC20 */ { 0, 1, 0, 0, 0, 0 }, /* */
/* PC19 */ { 0, 1, 0, 0, 0, 0 }, /* */
/* PC18 */ { 0, 1, 0, 0, 0, 0 }, /* */
/* PC17 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII CLK15 */
/* PC16 */ { 1, 1, 0, 0, 0, 0 }, /* FCC3 MII CLK16 */
/* PC15 */ { 0, 0, 0, 1, 0, 0 }, /* PC15 */
/* PC14 */ { 0, 1, 0, 0, 0, 0 }, /* */
/* PC13 */ { 0, 0, 0, 1, 0, 0 }, /* PC13 */
/* PC12 */ { 0, 0, 0, 1, 0, 0 }, /* PC12 */
/* PC11 */ { 0, 0, 0, 1, 0, 0 }, /* PC11 */
/* PC10 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PC9 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PC8 */ { 0, 0, 0, 1, 0, 0 }, /* PC8 */
/* PC7 */ { 0, 0, 0, 1, 0, 0 }, /* PC7 */
/* PC6 */ { 0, 0, 0, 1, 0, 0 }, /* PC6 */
/* PC5 */ { 0, 0, 0, 1, 0, 0 }, /* PC5 */
/* PC4 */ { 0, 0, 0, 1, 0, 0 }, /* PC4 */
/* PC3 */ { 0, 0, 0, 1, 0, 0 }, /* PC3 */
/* PC2 */ { 0, 0, 0, 1, 0, 1 }, /* */
/* PC1 */ { 0, 0, 0, 1, 0, 0 }, /* */
/* PC0 */ { 0, 0, 0, 1, 0, 0 }, /* */
},
/* Port D */
{ /* conf ppar psor pdir podr pdat */
/* PD31 */ { 0, 1, 0, 0, 0, 0 }, /* */
/* PD30 */ { 0, 1, 1, 1, 0, 0 }, /* */
/* PD29 */ { 0, 1, 0, 1, 0, 0 }, /* */
/* PD28 */ { 0, 0, 0, 1, 0, 0 }, /* PD28 */
/* PD27 */ { 0, 0, 0, 1, 0, 0 }, /* PD27 */
/* PD26 */ { 0, 0, 0, 1, 0, 0 }, /* PD26 */
/* PD25 */ { 0, 0, 0, 1, 0, 0 }, /* PD25 */
/* PD24 */ { 0, 0, 0, 1, 0, 0 }, /* PD24 */
/* PD23 */ { 0, 0, 0, 1, 0, 0 }, /* PD23 */
/* PD22 */ { 0, 0, 0, 1, 0, 0 }, /* PD22 */
/* PD21 */ { 0, 0, 0, 1, 0, 0 }, /* PD21 */
/* PD20 */ { 0, 0, 0, 1, 0, 0 }, /* PD20 */
/* PD19 */ { 0, 0, 0, 1, 0, 0 }, /* PD19 */
/* PD18 */ { 0, 0, 0, 1, 0, 0 }, /* PD19 */
/* PD17 */ { 0, 1, 0, 0, 0, 0 }, /* */
/* PD16 */ { 0, 1, 0, 1, 0, 0 }, /* */
/* PD15 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SDA */
/* PD14 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SCL */
/* 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 */ { 1, 1, 0, 1, 0, 0 }, /* SMC1 TXD */
/* PD8 */ { 1, 1, 0, 0, 0, 0 }, /* SMC1 RXD */
/* PD7 */ { 0, 0, 0, 1, 0, 1 }, /* PD7 */
/* PD6 */ { 0, 0, 0, 1, 0, 1 }, /* PD6 */
/* PD5 */ { 0, 0, 0, 1, 0, 1 }, /* PD5 */
/* PD4 */ { 0, 0, 0, 1, 0, 1 }, /* PD4 */
/* PD3 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */
/* PD2 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */
/* PD1 */ { 0, 0, 0, 0, 0, 0 }, /* pin doesn't exist */
/* PD0 */ { 0, 0, 0, 0, 0, 0 } /* pin doesn't exist */
}
};
/* ------------------------------------------------------------------------- */
/*
* Setup CS4 to enable the Board Control/Status registers.
* Otherwise the smcs won't work.
*/
int board_early_init_f (void)
{
volatile t_ep_regs *regs = (t_ep_regs *) CFG_REGS_BASE;
volatile immap_t *immap = (immap_t *) CFG_IMMR;
volatile memctl8260_t *memctl = &immap->im_memctl;
memctl->memc_br4 = CFG_BR4_PRELIM;
memctl->memc_or4 = CFG_OR4_PRELIM;
regs->bcsr1 = 0x62; /* to enable terminal on SMC1 */
regs->bcsr2 = 0x30; /* enable NVRAM and writing FLASH */
return 0;
}
void reset_phy (void)
{
volatile t_ep_regs *regs = (t_ep_regs *) CFG_REGS_BASE;
regs->bcsr4 = 0xC0;
}
/*
* Check Board Identity:
* I don' know, how the next board revisions will be coded.
* Thats why its a static interpretation ...
*/
int checkboard (void)
{
volatile t_ep_regs *regs = (t_ep_regs *) CFG_REGS_BASE;
uint major = 0, minor = 0;
switch (regs->bcsr0) {
case 0x02:
major = 1;
break;
case 0x03:
major = 1;
minor = 1;
break;
default:
break;
}
printf ("Board: Embedded Planet EP8260, Revision %d.%d\n",
major, minor);
return 0;
}
/* ------------------------------------------------------------------------- */
long int initdram (int board_type)
{
volatile immap_t *immap = (immap_t *) CFG_IMMR;
volatile memctl8260_t *memctl = &immap->im_memctl;
volatile uchar c = 0;
volatile uchar *ramaddr = (uchar *) (CFG_SDRAM_BASE) + 0x110;
/*
ulong psdmr = CFG_PSDMR;
#ifdef CFG_LSDRAM
ulong lsdmr = CFG_LSDMR;
#endif
*/
long size = CFG_SDRAM0_SIZE;
int i;
/*
* 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 CFG_SDRAM_BASE.
*/
memctl->memc_psrt = CFG_PSRT;
memctl->memc_mptpr = CFG_MPTPR;
memctl->memc_psdmr = (ulong) CFG_PSDMR | PSDMR_OP_PREA;
*ramaddr = c;
memctl->memc_psdmr = (ulong) CFG_PSDMR | PSDMR_OP_CBRR;
for (i = 0; i < 8; i++)
*ramaddr = c;
memctl->memc_psdmr = (ulong) CFG_PSDMR | PSDMR_OP_MRW;
*ramaddr = c;
memctl->memc_psdmr = (ulong) CFG_PSDMR | PSDMR_OP_NORM | PSDMR_RFEN;
*ramaddr = c;
#ifndef CFG_RAMBOOT
#ifdef CFG_LSDRAM
size += CFG_SDRAM1_SIZE;
ramaddr = (uchar *) (CFG_SDRAM1_BASE) + 0x8c;
memctl->memc_lsrt = CFG_LSRT;
memctl->memc_lsdmr = (ulong) CFG_LSDMR | PSDMR_OP_PREA;
*ramaddr = c;
memctl->memc_lsdmr = (ulong) CFG_LSDMR | PSDMR_OP_CBRR;
for (i = 0; i < 8; i++)
*ramaddr = c;
memctl->memc_lsdmr = (ulong) CFG_LSDMR | PSDMR_OP_MRW;
*ramaddr = c;
memctl->memc_lsdmr = (ulong) CFG_LSDMR | PSDMR_OP_NORM | PSDMR_RFEN;
*ramaddr = c;
#endif /* CFG_LSDRAM */
#endif /* CFG_RAMBOOT */
return (size * 1024 * 1024);
}