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u-boot/board/ppmc8260/ppmc8260.c
Wolfgang Denk cdb749778a Rename getenv_r() into getenv_f() 
While running from flash, i. e. before relocation, we have only a
limited C runtime environment without writable data segment. In this
phase, some configurations (for example with environment in EEPROM)
must not use the normal getenv(), but a special function.  This
function had been called getenv_r(), with the idea that the "_r"
suffix would mean the same as in the _r_eentrant versions of some of
the C library functions (for example getdate vs. getdate_r, getgrent
vs. getgrent_r, etc.).

Unfortunately this was a misleading name, as in U-Boot the "_r"
generally means "running from RAM", i. e. _after_ relocation.

To avoid confusion, rename into getenv_f() [as "running from flash"]

Signed-off-by: Wolfgang Denk <wd@denx.de>
Acked-by: Detlev Zundel <dzu@denx.de>
2010-08-04 00:45:36 +02:00

308 lines
13 KiB
C
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/*
* (C) Copyright 2000
* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
* Marius Groeger <mgroeger@sysgo.de>
*
* (C) Copyright 2001
* Advent Networks, Inc. <http://www.adventnetworks.com>
* Jay Monkman <jtm@smoothsmoothie.com>
*
* 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>
/*
* 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, 0, 0, 0 }, /* FCC1 *ATMTXEN */
/* PA30 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMTCA */
/* PA29 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMTSOC */
/* PA28 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 *ATMRXEN */
/* PA27 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMRSOC */
/* PA26 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMRCA */
/* PA25 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMTXD[0] */
/* PA24 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMTXD[1] */
/* PA23 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMTXD[2] */
/* PA22 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMTXD[3] */
/* PA21 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMTXD[4] */
/* PA20 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMTXD[5] */
/* PA19 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMTXD[6] */
/* PA18 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMTXD[7] */
/* PA17 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMRXD[7] */
/* PA16 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMRXD[6] */
/* PA15 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMRXD[5] */
/* PA14 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMRXD[4] */
/* PA13 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMRXD[3] */
/* PA12 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMRXD[2] */
/* PA11 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMRXD[1] */
/* PA10 */ { 0, 0, 0, 0, 0, 0 }, /* FCC1 ATMRXD[0] */
/* PA9 */ { 1, 1, 0, 1, 0, 0 }, /* SMC2 TXD */
/* PA8 */ { 1, 1, 0, 0, 0, 0 }, /* SMC2 RXD */
/* PA7 */ { 1, 0, 0, 1, 0, 0 }, /* TDM_A1:L1TSYNC */
/* PA6 */ { 1, 0, 0, 1, 0, 0 }, /* TDN_A1:L1RSYNC */
/* 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 configuration */
{ /* conf ppar psor pdir podr pdat */
/* PB31 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TX_ER */
/* PB30 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RX_DV */
/* PB29 */ { 1, 1, 1, 1, 0, 0 }, /* FCC2 MII TX_EN */
/* PB28 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RX_ER */
/* PB27 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII COL */
/* PB26 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII CRS */
/* PB25 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[3] */
/* PB24 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[2] */
/* PB23 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[1] */
/* PB22 */ { 1, 1, 0, 1, 0, 0 }, /* FCC2 MII TxD[0] */
/* PB21 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[0] */
/* PB20 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[1] */
/* PB19 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[2] */
/* PB18 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RxD[3] */
/* PB17 */ { 0, 0, 0, 0, 0, 0 }, /* PB17 */
/* PB16 */ { 1, 0, 0, 0, 0, 0 }, /* TDM_A1:L1CLK0 */
/* PB15 */ { 1, 0, 0, 1, 0, 1 }, /* /FETHRST */
/* PB14 */ { 1, 0, 0, 1, 0, 0 }, /* FETHDIS */
/* PB13 */ { 0, 0, 0, 0, 0, 0 }, /* PB13 */
/* PB12 */ { 1, 0, 0, 1, 0, 0 }, /* TDM_B1:L1CLK0 */
/* PB11 */ { 1, 0, 0, 1, 0, 0 }, /* TDM_D1:L1TXD */
/* PB10 */ { 1, 0, 0, 1, 0, 0 }, /* TDM_D1:L1RXD */
/* PB9 */ { 1, 0, 0, 1, 0, 0 }, /* TDM_D1:L1TSYNC */
/* PB8 */ { 1, 0, 0, 1, 0, 0 }, /* TDM_D1:L1RSYNC */
/* PB7 */ { 0, 0, 0, 0, 0, 0 }, /* PB7 */
/* PB6 */ { 0, 0, 0, 0, 0, 0 }, /* PB6 */
/* PB5 */ { 0, 0, 0, 0, 0, 0 }, /* PB5 */
/* PB4 */ { 0, 0, 0, 0, 0, 0 }, /* PB4 */
/* 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, 0, 0, 0 }, /* PC31 */
/* PC30 */ { 0, 0, 0, 0, 0, 0 }, /* PC30 */
/* PC29 */ { 0, 0, 0, 0, 0, 0 }, /* PC28 */
/* PC28 */ { 1, 1, 0, 0, 0, 0 }, /* CLK4 */
/* PC27 */ { 0, 0, 0, 0, 0, 0 }, /* PC27 */
/* PC26 */ { 0, 0, 0, 0, 0, 0 }, /* PC26 */
/* PC25 */ { 1, 1, 0, 0, 0, 0 }, /* CLK7 */
/* PC24 */ { 0, 0, 0, 0, 0, 0 }, /* PC24 */
/* PC23 */ { 1, 0, 0, 1, 0, 0 }, /* ATMTFCLK */
/* PC22 */ { 0, 0, 0, 0, 0, 0 }, /* PC22 */
/* PC21 */ { 0, 0, 0, 0, 0, 0 }, /* PC23 */
/* PC20 */ { 0, 0, 0, 0, 0, 0 }, /* PC24 */
/* PC19 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII RX_CLK */
/* PC18 */ { 1, 1, 0, 0, 0, 0 }, /* FCC2 MII TX_CLK */
/* PC17 */ { 0, 0, 0, 0, 0, 0 }, /* PC17 */
/* PC16 */ { 0, 0, 0, 0, 0, 0 }, /* PC16 */
/* PC15 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1:TxAddr[0] */
/* PC14 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1:RxAddr[0] */
/* PC13 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1:TxAddr[1] */
/* PC12 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1:RxAddr[1] */
/* PC11 */ { 1, 1, 0, 1, 0, 0 }, /* TDM_D1:L1CLK0 */
/* PC10 */ { 1, 0, 0, 1, 0, 0 }, /* FCC2 MDC */
/* PC9 */ { 1, 0, 0, 1, 0, 0 }, /* FCC2 MDIO */
/* PC8 */ { 0, 0, 0, 0, 0, 0 }, /* PC8 */
/* PC7 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1:TxAddr[2]*/
/* PC6 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1:RxAddr[2] */
/* PC5 */ { 0, 0, 0, 0, 0, 0 }, /* PC5 */
/* PC4 */ { 0, 0, 0, 0, 0, 0 }, /* PC4 */
/* PC3 */ { 1, 0, 0, 1, 0, 0 }, /* IDMA2:DACK */
/* PC2 */ { 1, 0, 0, 1, 0, 0 }, /* IDMA2:DONE */
/* PC1 */ { 1, 0, 0, 1, 0, 0 }, /* IDMA2:DREQ */
/* PC0 */ { 1, 0, 0, 1, 0, 0 }, /* IDMA1:DREQ */
},
/* 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 */ { 1, 0, 0, 1, 0, 0 }, /* FCC1:RxAddr[3] */
/* PD28 */ { 0, 0, 0, 0, 0, 0 }, /* PD28 */
/* PD27 */ { 0, 0, 0, 0, 0, 0 }, /* PD27 */
/* PD26 */ { 1, 0, 0, 1, 0, 0 }, /* TDM_C1:L1RSYNC */
/* 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 */ { 0, 0, 0, 0, 0, 0 }, /* PD22 */
/* PD21 */ { 0, 0, 0, 0, 0, 0 }, /* PD21 */
/* PD20 */ { 0, 0, 0, 0, 0, 0 }, /* PD20 */
/* PD19 */ { 0, 0, 0, 0, 0, 0 }, /* PD19 */
/* PD18 */ { 0, 0, 0, 0, 0, 0 }, /* PD19 */
/* PD17 */ { 1, 1, 0, 0, 0, 0 }, /* FCC1 ATMRXPRTY */
/* PD16 */ { 1, 1, 0, 1, 0, 0 }, /* FCC1 ATMTXPRTY */
/* PD15 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SDA */
/* PD14 */ { 1, 1, 1, 0, 1, 0 }, /* I2C SCL */
/* PD13 */ { 1, 0, 0, 0, 0, 0 }, /* TDM_B1:L1TXD */
/* PD12 */ { 1, 0, 0, 0, 0, 0 }, /* TDM_B1:L1RXD */
/* PD11 */ { 1, 0, 0, 0, 0, 0 }, /* TDM_B1:L1TSYNC */
/* PD10 */ { 1, 0, 0, 0, 0, 0 }, /* TDM_B1:L1RSYNC*/
/* PD9 */ { 1, 1, 0, 1, 0, 0 }, /* SMC1:TXD */
/* PD8 */ { 1, 1, 0, 0, 0, 0 }, /* SMC1:RXD */
/* PD7 */ { 1, 1, 0, 0, 0, 0 }, /* SMC1:SMSYN */
/* PD6 */ { 1, 0, 0, 1, 0, 0 }, /* IDMA1:DACK */
/* PD5 */ { 1, 0, 0, 1, 0, 0 }, /* IDMA1:DONE */
/* PD4 */ { 0, 0, 0, 0, 0, 0 }, /* 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 */
}
};
/* ------------------------------------------------------------------------- */
/*
* Check Board Identity:
*/
int checkboard (void)
{
puts ("Board: Wind River PPMC8260\n");
return 0;
}
/* ------------------------------------------------------------------------- */
phys_size_t initdram (int board_type)
{
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
volatile memctl8260_t *memctl = &immap->im_memctl;
volatile uchar c = 0xff;
volatile uchar *ramaddr0 = (uchar *) (CONFIG_SYS_SDRAM0_BASE);
volatile uchar *ramaddr1 = (uchar *) (CONFIG_SYS_SDRAM1_BASE);
ulong psdmr = CONFIG_SYS_PSDMR;
volatile uchar *ramaddr2 = (uchar *) (CONFIG_SYS_SDRAM2_BASE);
ulong lsdmr = CONFIG_SYS_LSDMR;
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 CONFIG_SYS_SDRAM_BASE.
*/
memctl->memc_psrt = CONFIG_SYS_PSRT;
memctl->memc_mptpr = CONFIG_SYS_MPTPR;
#ifndef CONFIG_SYS_RAMBOOT
memctl->memc_psdmr = psdmr | PSDMR_OP_PREA;
*ramaddr0++ = c;
*ramaddr1++ = c;
memctl->memc_psdmr = psdmr | PSDMR_OP_CBRR;
for (i = 0; i < 8; i++) {
*ramaddr0++ = c;
*ramaddr1++ = c;
}
memctl->memc_psdmr = psdmr | PSDMR_OP_MRW;
ramaddr0 = (uchar *) (CONFIG_SYS_SDRAM0_BASE + 0x110);
ramaddr1 = (uchar *) (CONFIG_SYS_SDRAM1_BASE + 0x110);
*ramaddr0 = c;
*ramaddr1 = c;
memctl->memc_psdmr = psdmr | PSDMR_OP_NORM | PSDMR_RFEN;
*ramaddr0 = c;
*ramaddr1 = c;
memctl->memc_lsdmr = lsdmr | PSDMR_OP_PREA;
*ramaddr2++ = c;
memctl->memc_lsdmr = lsdmr | PSDMR_OP_CBRR;
for (i = 0; i < 8; i++) {
*ramaddr2++ = c;
}
memctl->memc_lsdmr = lsdmr | PSDMR_OP_MRW;
*ramaddr2++ = c;
memctl->memc_lsdmr = lsdmr | PSDMR_OP_NORM | PSDMR_RFEN;
*ramaddr2 = c;
#endif
/* return total ram size */
return ((CONFIG_SYS_SDRAM0_SIZE + CONFIG_SYS_SDRAM1_SIZE) * 1024 * 1024);
}
#ifdef CONFIG_MISC_INIT_R
/* ------------------------------------------------------------------------- */
int misc_init_r (void)
{
#ifdef CONFIG_SYS_LED_BASE
uchar ds = *(unsigned char *) (CONFIG_SYS_LED_BASE + 1);
uchar ss;
uchar tmp[64];
int res;
if ((ds != 0) && (ds != 0xff)) {
res = getenv_f("ethaddr", (char *)tmp, sizeof (tmp));
if (res > 0) {
ss = ((ds >> 4) & 0x0f);
ss += ss < 0x0a ? '0' : ('a' - 10);
tmp[15] = ss;
ss = (ds & 0x0f);
ss += ss < 0x0a ? '0' : ('a' - 10);
tmp[16] = ss;
tmp[17] = '\0';
setenv ("ethaddr", (char *)tmp);
/* set the led to show the address */
*((unsigned char *) (CONFIG_SYS_LED_BASE + 1)) = ds;
}
}
#endif /* CONFIG_SYS_LED_BASE */
return (0);
}
#endif /* CONFIG_MISC_INIT_R */
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