mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-05 02:51:00 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
803 lines
22 KiB
C
803 lines
22 KiB
C
/*
|
|
* (C) Copyright 2001
|
|
* Denis Peter, MPL AG Switzerland, d.peter@mpl.ch
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*
|
|
* 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 <asm/ppc4xx.h>
|
|
#include <asm/ppc4xx-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 */
|
|
|
|
/* 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;
|
|
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 */
|
|
/* 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;
|
|
}
|
|
|
|
int board_early_init_r(void)
|
|
{
|
|
int mode;
|
|
|
|
/*
|
|
* since we are relocated, we can finally enable i-cache
|
|
* and set up the flash CS correctly
|
|
*/
|
|
icache_enable();
|
|
setup_cs_reloc();
|
|
/* get and display boot mode */
|
|
mode = get_boot_mode();
|
|
if (mode & BOOT_PCI)
|
|
printf("PCI Boot %s Map\n", (mode & BOOT_MPS) ?
|
|
"MPS" : "Flash");
|
|
else
|
|
printf("%s Boot\n", (mode & BOOT_MPS) ?
|
|
"MPS" : "Flash");
|
|
|
|
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_f("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;
|
|
unsigned long TotalSize;
|
|
|
|
/* 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;
|
|
}
|
|
}
|
|
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;
|
|
|
|
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);
|
|
}
|
|
|
|
|
|
extern int mk_date (char *, struct rtc_time *);
|
|
|
|
int last_stage_init (void)
|
|
{
|
|
unsigned long stop;
|
|
struct rtc_time newtm;
|
|
char *s;
|
|
|
|
/* 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 true if console should be overwritten */
|
|
return ((in8(PLD_EXT_CONF_REG) & 0x1) == 0);
|
|
}
|
|
|
|
|
|
/************************************************************************
|
|
* 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");
|
|
}
|