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u-boot/board/mpl/mip405/mip405.c
Stefan Roese 95b602bab5 ppc4xx: Convert PPC4xx SDRAM defines from lower case to upper case 
The latest PPC4xx register cleanup patch missed some SDRAM defines.
This patch now changes lower case UIC defines to upper case. Also
some names are changed to match the naming in the IBM/AMCC users
manuals (e.g. mem_mcopt1 -> SDRAM0_CFG).

Signed-off-by: Stefan Roese <sr@denx.de>
2009-09-28 10:45:54 +02:00

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/*
* (C) Copyright 2001
* Denis Peter, MPL AG Switzerland, d.peter@mpl.ch
*
* 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
*
*
* TODO: clean-up
*/
/*
* How do I program the SDRAM Timing Register (SDRAM0_TR) for a specific SDRAM or DIMM?
*
* As an example, consider a case where PC133 memory with CAS Latency equal to 2 is being
* used with a 200MHz 405GP. For a typical 128Mb, PC133 SDRAM, the relevant minimum
* parameters from the datasheet are:
* Tclk = 7.5ns (CL = 2)
* Trp = 15ns
* Trc = 60ns
* Trcd = 15ns
* Trfc = 66ns
*
* If we are operating the 405GP with the MemClk output frequency set to 100 MHZ, the clock
* period is 10ns and the parameters needed for the Timing Register are:
* CASL = CL = 2 clock cycles
* PTA = Trp = 15ns / 10ns = 2 clock cycles
* CTP = Trc - Trcd - Trp = (60ns - 15ns - 15ns) / 10ns= 3 clock cycles
* LDF = 2 clock cycles (but can be extended to meet board-level timing)
* RFTA = Trfc = 66ns / 10ns= 7 clock cycles
* RCD = Trcd = 15ns / 10ns= 2 clock cycles
*
* The actual bit settings in the register would be:
*
* CASL = 0b01
* PTA = 0b01
* CTP = 0b10
* LDF = 0b01
* RFTA = 0b011
* RCD = 0b01
*
* If Trfc is not specified in the datasheet for PC100 or PC133 memory, set RFTA = Trc
* instead. Figure 24 in the PC SDRAM Specification Rev. 1.7 shows refresh to active delay
* defined as Trc rather than Trfc.
* When using DIMM modules, most but not all of the required timing parameters can be read
* from the Serial Presence Detect (SPD) EEPROM on the module. Specifically, Trc and Trfc
* are not available from the EEPROM
*/
#include <common.h>
#include "mip405.h"
#include <asm/processor.h>
#include <4xx_i2c.h>
#include <miiphy.h>
#include "../common/common_util.h"
#include <stdio_dev.h>
#include <i2c.h>
#include <rtc.h>
DECLARE_GLOBAL_DATA_PTR;
#undef SDRAM_DEBUG
#define ENABLE_ECC /* for ecc boards */
#define FALSE 0
#define TRUE 1
/* stdlib.h causes some compatibility problems; should fixe these! -- wd */
#ifndef __ldiv_t_defined
typedef struct {
long int quot; /* Quotient */
long int rem; /* Remainder */
} ldiv_t;
extern ldiv_t ldiv (long int __numer, long int __denom);
# define __ldiv_t_defined 1
#endif
#define PLD_PART_REG PER_PLD_ADDR + 0
#define PLD_VERS_REG PER_PLD_ADDR + 1
#define PLD_BOARD_CFG_REG PER_PLD_ADDR + 2
#define PLD_IRQ_REG PER_PLD_ADDR + 3
#define PLD_COM_MODE_REG PER_PLD_ADDR + 4
#define PLD_EXT_CONF_REG PER_PLD_ADDR + 5
#define MEGA_BYTE (1024*1024)
typedef struct {
unsigned char boardtype; /* Board revision and Population Options */
unsigned char cal; /* cas Latency (will be programmend as cal-1) */
unsigned char trp; /* datain27 in clocks */
unsigned char trcd; /* datain29 in clocks */
unsigned char tras; /* datain30 in clocks */
unsigned char tctp; /* tras - trcd in clocks */
unsigned char am; /* Address Mod (will be programmed as am-1) */
unsigned char sz; /* log binary => Size = (4MByte<<sz) 5 = 128, 4 = 64, 3 = 32, 2 = 16, 1=8 */
unsigned char ecc; /* if true, ecc is enabled */
} sdram_t;
#if defined(CONFIG_MIP405T)
const sdram_t sdram_table[] = {
{ 0x0F, /* MIP405T Rev A, 64MByte -1 Board */
3, /* Case Latenty = 3 */
3, /* trp 20ns / 7.5 ns datain[27] */
3, /* trcd 20ns /7.5 ns (datain[29]) */
6, /* tras 44ns /7.5 ns (datain[30]) */
4, /* tcpt 44 - 20ns = 24ns */
2, /* Address Mode = 2 (12x9x4) */
3, /* size value (32MByte) */
0}, /* ECC disabled */
{ 0xff, /* terminator */
0xff,
0xff,
0xff,
0xff,
0xff,
0xff,
0xff }
};
#else
const sdram_t sdram_table[] = {
{ 0x0f, /* Rev A, 128MByte -1 Board */
3, /* Case Latenty = 3 */
3, /* trp 20ns / 7.5 ns datain[27] */
3, /* trcd 20ns /7.5 ns (datain[29]) */
6, /* tras 44ns /7.5 ns (datain[30]) */
4, /* tcpt 44 - 20ns = 24ns */
3, /* Address Mode = 3 */
5, /* size value */
1}, /* ECC enabled */
{ 0x07, /* Rev A, 64MByte -2 Board */
3, /* Case Latenty = 3 */
3, /* trp 20ns / 7.5 ns datain[27] */
3, /* trcd 20ns /7.5 ns (datain[29]) */
6, /* tras 44ns /7.5 ns (datain[30]) */
4, /* tcpt 44 - 20ns = 24ns */
2, /* Address Mode = 2 */
4, /* size value */
1}, /* ECC enabled */
{ 0x03, /* Rev A, 128MByte -4 Board */
3, /* Case Latenty = 3 */
3, /* trp 20ns / 7.5 ns datain[27] */
3, /* trcd 20ns /7.5 ns (datain[29]) */
6, /* tras 44ns /7.5 ns (datain[30]) */
4, /* tcpt 44 - 20ns = 24ns */
3, /* Address Mode = 3 */
5, /* size value */
1}, /* ECC enabled */
{ 0x1f, /* Rev B, 128MByte -3 Board */
3, /* Case Latenty = 3 */
3, /* trp 20ns / 7.5 ns datain[27] */
3, /* trcd 20ns /7.5 ns (datain[29]) */
6, /* tras 44ns /7.5 ns (datain[30]) */
4, /* tcpt 44 - 20ns = 24ns */
3, /* Address Mode = 3 */
5, /* size value */
1}, /* ECC enabled */
{ 0x2f, /* Rev C, 128MByte -3 Board */
3, /* Case Latenty = 3 */
3, /* trp 20ns / 7.5 ns datain[27] */
3, /* trcd 20ns /7.5 ns (datain[29]) */
6, /* tras 44ns /7.5 ns (datain[30]) */
4, /* tcpt 44 - 20ns = 24ns */
3, /* Address Mode = 3 */
5, /* size value */
1}, /* ECC enabled */
{ 0xff, /* terminator */
0xff,
0xff,
0xff,
0xff,
0xff,
0xff,
0xff }
};
#endif /*CONFIG_MIP405T */
void SDRAM_err (const char *s)
{
#ifndef SDRAM_DEBUG
(void) get_clocks ();
gd->baudrate = 9600;
serial_init ();
#endif
serial_puts ("\n");
serial_puts (s);
serial_puts ("\n enable SDRAM_DEBUG for more info\n");
for (;;);
}
unsigned char get_board_revcfg (void)
{
out8 (PER_BOARD_ADDR, 0);
return (in8 (PER_BOARD_ADDR));
}
#ifdef SDRAM_DEBUG
void write_hex (unsigned char i)
{
char cc;
cc = i >> 4;
cc &= 0xf;
if (cc > 9)
serial_putc (cc + 55);
else
serial_putc (cc + 48);
cc = i & 0xf;
if (cc > 9)
serial_putc (cc + 55);
else
serial_putc (cc + 48);
}
void write_4hex (unsigned long val)
{
write_hex ((unsigned char) (val >> 24));
write_hex ((unsigned char) (val >> 16));
write_hex ((unsigned char) (val >> 8));
write_hex ((unsigned char) val);
}
#endif
int init_sdram (void)
{
unsigned long tmp, baseaddr;
unsigned short i;
unsigned char trp_clocks,
trcd_clocks,
tras_clocks,
trc_clocks,
tctp_clocks;
unsigned char cal_val;
unsigned char bc;
unsigned long sdram_tim, sdram_bank;
/*i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);*/
(void) get_clocks ();
gd->baudrate = 9600;
serial_init ();
/* set up the pld */
mtdcr (EBC0_CFGADDR, PB7AP);
mtdcr (EBC0_CFGDATA, PLD_AP);
mtdcr (EBC0_CFGADDR, PB7CR);
mtdcr (EBC0_CFGDATA, PLD_CR);
/* THIS IS OBSOLETE */
/* set up the board rev reg*/
mtdcr (EBC0_CFGADDR, PB5AP);
mtdcr (EBC0_CFGDATA, BOARD_AP);
mtdcr (EBC0_CFGADDR, PB5CR);
mtdcr (EBC0_CFGDATA, BOARD_CR);
#ifdef SDRAM_DEBUG
/* get all informations from PLD */
serial_puts ("\nPLD Part 0x");
bc = in8 (PLD_PART_REG);
write_hex (bc);
serial_puts ("\nPLD Vers 0x");
bc = in8 (PLD_VERS_REG);
write_hex (bc);
serial_puts ("\nBoard Rev 0x");
bc = in8 (PLD_BOARD_CFG_REG);
write_hex (bc);
serial_puts ("\n");
#endif
/* check board */
bc = in8 (PLD_PART_REG);
#if defined(CONFIG_MIP405T)
if((bc & 0x80)==0)
SDRAM_err ("U-Boot configured for a MIP405T not for a MIP405!!!\n");
#else
if((bc & 0x80)==0x80)
SDRAM_err ("U-Boot configured for a MIP405 not for a MIP405T!!!\n");
#endif
/* set-up the chipselect machine */
mtdcr (EBC0_CFGADDR, PB0CR); /* get cs0 config reg */
tmp = mfdcr (EBC0_CFGDATA);
if ((tmp & 0x00002000) == 0) {
/* MPS Boot, set up the flash */
mtdcr (EBC0_CFGADDR, PB1AP);
mtdcr (EBC0_CFGDATA, FLASH_AP);
mtdcr (EBC0_CFGADDR, PB1CR);
mtdcr (EBC0_CFGDATA, FLASH_CR);
} else {
/* Flash boot, set up the MPS */
mtdcr (EBC0_CFGADDR, PB1AP);
mtdcr (EBC0_CFGDATA, MPS_AP);
mtdcr (EBC0_CFGADDR, PB1CR);
mtdcr (EBC0_CFGDATA, MPS_CR);
}
/* set up UART0 (CS2) and UART1 (CS3) */
mtdcr (EBC0_CFGADDR, PB2AP);
mtdcr (EBC0_CFGDATA, UART0_AP);
mtdcr (EBC0_CFGADDR, PB2CR);
mtdcr (EBC0_CFGDATA, UART0_CR);
mtdcr (EBC0_CFGADDR, PB3AP);
mtdcr (EBC0_CFGDATA, UART1_AP);
mtdcr (EBC0_CFGADDR, PB3CR);
mtdcr (EBC0_CFGDATA, UART1_CR);
bc = in8 (PLD_BOARD_CFG_REG);
#ifdef SDRAM_DEBUG
serial_puts ("\nstart SDRAM Setup\n");
serial_puts ("\nBoard Rev: ");
write_hex (bc);
serial_puts ("\n");
#endif
i = 0;
baseaddr = CONFIG_SYS_SDRAM_BASE;
while (sdram_table[i].sz != 0xff) {
if (sdram_table[i].boardtype == bc)
break;
i++;
}
if (sdram_table[i].boardtype != bc)
SDRAM_err ("No SDRAM table found for this board!!!\n");
#ifdef SDRAM_DEBUG
serial_puts (" found table ");
write_hex (i);
serial_puts (" \n");
#endif
/* since the ECC initialisation needs some time,
* we show that we're alive
*/
if (sdram_table[i].ecc)
serial_puts ("\nInitializing SDRAM, Please stand by");
cal_val = sdram_table[i].cal - 1; /* Cas Latency */
trp_clocks = sdram_table[i].trp; /* 20ns / 7.5 ns datain[27] */
trcd_clocks = sdram_table[i].trcd; /* 20ns /7.5 ns (datain[29]) */
tras_clocks = sdram_table[i].tras; /* 44ns /7.5 ns (datain[30]) */
/* ctp = ((trp + tras) - trp - trcd) => tras - trcd */
tctp_clocks = sdram_table[i].tctp; /* 44 - 20ns = 24ns */
/* trc_clocks is sum of trp_clocks + tras_clocks */
trc_clocks = trp_clocks + tras_clocks;
/* get SDRAM timing register */
mtdcr (SDRAM0_CFGADDR, SDRAM0_TR);
sdram_tim = mfdcr (SDRAM0_CFGDATA) & ~0x018FC01F;
/* insert CASL value */
sdram_tim |= ((unsigned long) (cal_val)) << 23;
/* insert PTA value */
sdram_tim |= ((unsigned long) (trp_clocks - 1)) << 18;
/* insert CTP value */
sdram_tim |=
((unsigned long) (trc_clocks - trp_clocks -
trcd_clocks)) << 16;
/* insert LDF (always 01) */
sdram_tim |= ((unsigned long) 0x01) << 14;
/* insert RFTA value */
sdram_tim |= ((unsigned long) (trc_clocks - 4)) << 2;
/* insert RCD value */
sdram_tim |= ((unsigned long) (trcd_clocks - 1)) << 0;
tmp = ((unsigned long) (sdram_table[i].am - 1) << 13); /* AM = 3 */
/* insert SZ value; */
tmp |= ((unsigned long) sdram_table[i].sz << 17);
/* get SDRAM bank 0 register */
mtdcr (SDRAM0_CFGADDR, SDRAM0_B0CR);
sdram_bank = mfdcr (SDRAM0_CFGDATA) & ~0xFFCEE001;
sdram_bank |= (baseaddr | tmp | 0x01);
#ifdef SDRAM_DEBUG
serial_puts ("sdtr: ");
write_4hex (sdram_tim);
serial_puts ("\n");
#endif
/* write SDRAM timing register */
mtdcr (SDRAM0_CFGADDR, SDRAM0_TR);
mtdcr (SDRAM0_CFGDATA, sdram_tim);
#ifdef SDRAM_DEBUG
serial_puts ("mb0cf: ");
write_4hex (sdram_bank);
serial_puts ("\n");
#endif
/* write SDRAM bank 0 register */
mtdcr (SDRAM0_CFGADDR, SDRAM0_B0CR);
mtdcr (SDRAM0_CFGDATA, sdram_bank);
if (get_bus_freq (tmp) > 110000000) { /* > 110MHz */
/* get SDRAM refresh interval register */
mtdcr (SDRAM0_CFGADDR, SDRAM0_RTR);
tmp = mfdcr (SDRAM0_CFGDATA) & ~0x3FF80000;
tmp |= 0x07F00000;
} else {
/* get SDRAM refresh interval register */
mtdcr (SDRAM0_CFGADDR, SDRAM0_RTR);
tmp = mfdcr (SDRAM0_CFGDATA) & ~0x3FF80000;
tmp |= 0x05F00000;
}
/* write SDRAM refresh interval register */
mtdcr (SDRAM0_CFGADDR, SDRAM0_RTR);
mtdcr (SDRAM0_CFGDATA, tmp);
/* enable ECC if used */
#if defined(ENABLE_ECC) && !defined(CONFIG_BOOT_PCI)
if (sdram_table[i].ecc) {
/* disable checking for all banks */
unsigned long *p;
#ifdef SDRAM_DEBUG
serial_puts ("disable ECC.. ");
#endif
mtdcr (SDRAM0_CFGADDR, SDRAM0_ECCCFG);
tmp = mfdcr (SDRAM0_CFGDATA);
tmp &= 0xff0fffff; /* disable all banks */
mtdcr (SDRAM0_CFGADDR, SDRAM0_ECCCFG);
/* set up SDRAM Controller with ECC enabled */
#ifdef SDRAM_DEBUG
serial_puts ("setup SDRAM Controller.. ");
#endif
mtdcr (SDRAM0_CFGDATA, tmp);
mtdcr (SDRAM0_CFGADDR, SDRAM0_CFG);
tmp = (mfdcr (SDRAM0_CFGDATA) & ~0xFFE00000) | 0x90800000;
mtdcr (SDRAM0_CFGADDR, SDRAM0_CFG);
mtdcr (SDRAM0_CFGDATA, tmp);
udelay (600);
#ifdef SDRAM_DEBUG
serial_puts ("fill the memory..\n");
#endif
serial_puts (".");
/* now, fill all the memory */
tmp = ((4 * MEGA_BYTE) << sdram_table[i].sz);
p = (unsigned long) 0;
while ((unsigned long) p < tmp) {
*p++ = 0L;
if (!((unsigned long) p % 0x00800000)) /* every 8MByte */
serial_puts (".");
}
/* enable bank 0 */
serial_puts (".");
#ifdef SDRAM_DEBUG
serial_puts ("enable ECC\n");
#endif
udelay (400);
mtdcr (SDRAM0_CFGADDR, SDRAM0_ECCCFG);
tmp = mfdcr (SDRAM0_CFGDATA);
tmp |= 0x00800000; /* enable bank 0 */
mtdcr (SDRAM0_CFGDATA, tmp);
udelay (400);
} else
#endif
{
/* enable SDRAM controller with no ECC, 32-bit SDRAM width, 16 byte burst */
mtdcr (SDRAM0_CFGADDR, SDRAM0_CFG);
tmp = (mfdcr (SDRAM0_CFGDATA) & ~0xFFE00000) | 0x80C00000;
mtdcr (SDRAM0_CFGADDR, SDRAM0_CFG);
mtdcr (SDRAM0_CFGDATA, tmp);
udelay (400);
}
serial_puts ("\n");
return (0);
}
int board_early_init_f (void)
{
init_sdram ();
/*-------------------------------------------------------------------------+
| Interrupt controller setup for the PIP405 board.
| Note: IRQ 0-15 405GP internally generated; active high; level sensitive
| IRQ 16 405GP internally generated; active low; level sensitive
| IRQ 17-24 RESERVED
| IRQ 25 (EXT IRQ 0) SouthBridge; active low; level sensitive
| IRQ 26 (EXT IRQ 1) NMI: active low; level sensitive
| IRQ 27 (EXT IRQ 2) SMI: active Low; level sensitive
| IRQ 28 (EXT IRQ 3) PCI SLOT 3; active low; level sensitive
| IRQ 29 (EXT IRQ 4) PCI SLOT 2; active low; level sensitive
| IRQ 30 (EXT IRQ 5) PCI SLOT 1; active low; level sensitive
| IRQ 31 (EXT IRQ 6) PCI SLOT 0; active low; level sensitive
| Note for MIP405 board:
| An interrupt taken for the SouthBridge (IRQ 25) indicates that
| the Interrupt Controller in the South Bridge has caused the
| interrupt. The IC must be read to determine which device
| caused the interrupt.
|
+-------------------------------------------------------------------------*/
mtdcr (UIC0SR, 0xFFFFFFFF); /* clear all ints */
mtdcr (UIC0ER, 0x00000000); /* disable all ints */
mtdcr (UIC0CR, 0x00000000); /* set all to be non-critical (for now) */
mtdcr (UIC0PR, 0xFFFFFF80); /* set int polarities */
mtdcr (UIC0TR, 0x10000000); /* set int trigger levels */
mtdcr (UIC0VCR, 0x00000001); /* set vect base=0,INT0 highest priority */
mtdcr (UIC0SR, 0xFFFFFFFF); /* clear all ints */
return 0;
}
/*
* Get some PLD Registers
*/
unsigned short get_pld_parvers (void)
{
unsigned short result;
unsigned char rc;
rc = in8 (PLD_PART_REG);
result = (unsigned short) rc << 8;
rc = in8 (PLD_VERS_REG);
result |= rc;
return result;
}
void user_led0 (unsigned char on)
{
if (on)
out8 (PLD_COM_MODE_REG, (in8 (PLD_COM_MODE_REG) | 0x4));
else
out8 (PLD_COM_MODE_REG, (in8 (PLD_COM_MODE_REG) & 0xfb));
}
void ide_set_reset (int idereset)
{
/* if reset = 1 IDE reset will be asserted */
if (idereset)
out8 (PLD_COM_MODE_REG, (in8 (PLD_COM_MODE_REG) | 0x1));
else {
udelay (10000);
out8 (PLD_COM_MODE_REG, (in8 (PLD_COM_MODE_REG) & 0xfe));
}
}
/* ------------------------------------------------------------------------- */
void get_pcbrev_var(unsigned char *pcbrev, unsigned char *var)
{
#if !defined(CONFIG_MIP405T)
unsigned char bc,rc,tmp;
int i;
bc = in8 (PLD_BOARD_CFG_REG);
tmp = ~bc;
tmp &= 0xf;
rc = 0;
for (i = 0; i < 4; i++) {
rc <<= 1;
rc += (tmp & 0x1);
tmp >>= 1;
}
rc++;
if(( (((bc>>4) & 0xf)==0x2) /* Rev C PCB or */
|| (((bc>>4) & 0xf)==0x1)) /* Rev B PCB with */
&& (rc==0x1)) /* Population Option 1 is a -3 */
rc=3;
*pcbrev=(bc >> 4) & 0xf;
*var=rc;
#else
unsigned char bc;
bc = in8 (PLD_BOARD_CFG_REG);
*pcbrev=(bc >> 4) & 0xf;
*var=16-(bc & 0xf);
#endif
}
/*
* Check Board Identity:
*/
/* serial String: "MIP405_1000" OR "MIP405T_1000" */
#if !defined(CONFIG_MIP405T)
#define BOARD_NAME "MIP405"
#else
#define BOARD_NAME "MIP405T"
#endif
int checkboard (void)
{
char s[50];
unsigned char bc, var;
int i;
backup_t *b = (backup_t *) s;
puts ("Board: ");
get_pcbrev_var(&bc,&var);
i = getenv_r ("serial#", (char *)s, 32);
if ((i == 0) || strncmp ((char *)s, BOARD_NAME,sizeof(BOARD_NAME))) {
get_backup_values (b);
if (strncmp (b->signature, "MPL\0", 4) != 0) {
puts ("### No HW ID - assuming " BOARD_NAME);
printf ("-%d Rev %c", var, 'A' + bc);
} else {
b->serial_name[sizeof(BOARD_NAME)-1] = 0;
printf ("%s-%d Rev %c SN: %s", b->serial_name, var,
'A' + bc, &b->serial_name[sizeof(BOARD_NAME)]);
}
} else {
s[sizeof(BOARD_NAME)-1] = 0;
printf ("%s-%d Rev %c SN: %s", s, var,'A' + bc,
&s[sizeof(BOARD_NAME)]);
}
bc = in8 (PLD_EXT_CONF_REG);
printf (" Boot Config: 0x%x\n", bc);
return (0);
}
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
/*
initdram(int board_type) reads EEPROM via I2c. EEPROM contains all of
the necessary info for SDRAM controller configuration
*/
/* ------------------------------------------------------------------------- */
/* ------------------------------------------------------------------------- */
static int test_dram (unsigned long ramsize);
phys_size_t initdram (int board_type)
{
unsigned long bank_reg[4], tmp, bank_size;
int i, ds;
unsigned long TotalSize;
ds = 0;
/* since the DRAM controller is allready set up, calculate the size with the
bank registers */
mtdcr (SDRAM0_CFGADDR, SDRAM0_B0CR);
bank_reg[0] = mfdcr (SDRAM0_CFGDATA);
mtdcr (SDRAM0_CFGADDR, SDRAM0_B1CR);
bank_reg[1] = mfdcr (SDRAM0_CFGDATA);
mtdcr (SDRAM0_CFGADDR, SDRAM0_B2CR);
bank_reg[2] = mfdcr (SDRAM0_CFGDATA);
mtdcr (SDRAM0_CFGADDR, SDRAM0_B3CR);
bank_reg[3] = mfdcr (SDRAM0_CFGDATA);
TotalSize = 0;
for (i = 0; i < 4; i++) {
if ((bank_reg[i] & 0x1) == 0x1) {
tmp = (bank_reg[i] >> 17) & 0x7;
bank_size = 4 << tmp;
TotalSize += bank_size;
} else
ds = 1;
}
mtdcr (SDRAM0_CFGADDR, SDRAM0_ECCCFG);
tmp = mfdcr (SDRAM0_CFGDATA);
if (!tmp)
printf ("No ");
printf ("ECC ");
test_dram (TotalSize * MEGA_BYTE);
return (TotalSize * MEGA_BYTE);
}
/* ------------------------------------------------------------------------- */
static int test_dram (unsigned long ramsize)
{
#ifdef SDRAM_DEBUG
mem_test (0L, ramsize, 1);
#endif
/* not yet implemented */
return (1);
}
/* used to check if the time in RTC is valid */
static unsigned long start;
static struct rtc_time tm;
extern flash_info_t flash_info[]; /* info for FLASH chips */
int misc_init_r (void)
{
/* adjust flash start and size as well as the offset */
gd->bd->bi_flashstart=0-flash_info[0].size;
gd->bd->bi_flashsize=flash_info[0].size-CONFIG_SYS_MONITOR_LEN;
gd->bd->bi_flashoffset=0;
/* check, if RTC is running */
rtc_get (&tm);
start=get_timer(0);
/* if MIP405 has booted from PCI, reset CCR0[24] as described in errata PCI_18 */
if (mfdcr(CPC0_PSR) & PSR_ROM_LOC)
mtspr(SPRN_CCR0, (mfspr(SPRN_CCR0) & ~0x80));
return (0);
}
void print_mip405_rev (void)
{
unsigned char part, vers, pcbrev, var;
get_pcbrev_var(&pcbrev,&var);
part = in8 (PLD_PART_REG);
vers = in8 (PLD_VERS_REG);
printf ("Rev: " BOARD_NAME "-%d Rev %c PLD %d Vers %d\n",
var, pcbrev + 'A', part & 0x7F, vers);
}
#ifdef CONFIG_POST
/*
* Returns 1 if keys pressed to start the power-on long-running tests
* Called from board_init_f().
*/
int post_hotkeys_pressed(void)
{
return 0; /* No hotkeys supported */
}
#endif
extern void mem_test_reloc(void);
extern int mk_date (char *, struct rtc_time *);
int last_stage_init (void)
{
unsigned long stop;
struct rtc_time newtm;
char *s;
mem_test_reloc();
/* write correct LED configuration */
if (miiphy_write("ppc_4xx_eth0", 0x1, 0x14, 0x2402) != 0) {
printf ("Error writing to the PHY\n");
}
/* since LED/CFG2 is not connected on the -2,
* write to correct capability information */
if (miiphy_write("ppc_4xx_eth0", 0x1, 0x4, 0x01E1) != 0) {
printf ("Error writing to the PHY\n");
}
print_mip405_rev ();
stdio_print_current_devices ();
check_env ();
/* check if RTC time is valid */
stop=get_timer(start);
while(stop<1200) { /* we wait 1.2 sec to check if the RTC is running */
udelay(1000);
stop=get_timer(start);
}
rtc_get (&newtm);
if(tm.tm_sec==newtm.tm_sec) {
s=getenv("defaultdate");
if(!s)
mk_date ("010112001970", &newtm);
else
if(mk_date (s, &newtm)!=0) {
printf("RTC: Bad date format in defaultdate\n");
return 0;
}
rtc_reset ();
rtc_set(&newtm);
}
return 0;
}
/***************************************************************************
* some helping routines
*/
int overwrite_console (void)
{
return ((in8 (PLD_EXT_CONF_REG) & 0x1)==0); /* return TRUE if console should be overwritten */
}
/************************************************************************
* Print MIP405 Info
************************************************************************/
void print_mip405_info (void)
{
unsigned char part, vers, cfg, irq_reg, com_mode, ext;
part = in8 (PLD_PART_REG);
vers = in8 (PLD_VERS_REG);
cfg = in8 (PLD_BOARD_CFG_REG);
irq_reg = in8 (PLD_IRQ_REG);
com_mode = in8 (PLD_COM_MODE_REG);
ext = in8 (PLD_EXT_CONF_REG);
printf ("PLD Part %d version %d\n", part & 0x7F, vers);
printf ("Board Revision %c\n", ((cfg >> 4) & 0xf) + 'A');
printf ("Population Options %d %d %d %d\n", (cfg) & 0x1,
(cfg >> 1) & 0x1, (cfg >> 2) & 0x1, (cfg >> 3) & 0x1);
printf ("User LED %s\n", (com_mode & 0x4) ? "on" : "off");
printf ("UART Clocks %d\n", (com_mode >> 4) & 0x3);
#if !defined(CONFIG_MIP405T)
printf ("User Config Switch %d %d %d %d %d %d %d %d\n",
(ext) & 0x1, (ext >> 1) & 0x1, (ext >> 2) & 0x1,
(ext >> 3) & 0x1, (ext >> 4) & 0x1, (ext >> 5) & 0x1,
(ext >> 6) & 0x1, (ext >> 7) & 0x1);
printf ("SER1 uses handshakes %s\n",
(ext & 0x80) ? "DTR/DSR" : "RTS/CTS");
#else
printf ("User Config Switch %d %d %d %d %d %d %d %d\n",
(ext) & 0x1, (ext >> 1) & 0x1, (ext >> 2) & 0x1,
(ext >> 3) & 0x1, (ext >> 4) & 0x1, (ext >> 5) & 0x1,
(ext >> 6) & 0x1,(ext >> 7) & 0x1);
#endif
printf ("IDE Reset %s\n", (ext & 0x01) ? "asserted" : "not asserted");
printf ("IRQs:\n");
printf (" PIIX INTR: %s\n", (irq_reg & 0x80) ? "inactive" : "active");
#if !defined(CONFIG_MIP405T)
printf (" UART0 IRQ: %s\n", (irq_reg & 0x40) ? "inactive" : "active");
printf (" UART1 IRQ: %s\n", (irq_reg & 0x20) ? "inactive" : "active");
#endif
printf (" PIIX SMI: %s\n", (irq_reg & 0x10) ? "inactive" : "active");
printf (" PIIX INIT: %s\n", (irq_reg & 0x8) ? "inactive" : "active");
printf (" PIIX NMI: %s\n", (irq_reg & 0x4) ? "inactive" : "active");
}
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