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Add PPC4xx-HCU4 and HCU5 boards: HCU4 files

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Signed-off-by: Niklaus Giger <niklaus.giger@netstal.com>
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Niklaus Giger 18 years ago committed by Stefan Roese
parent e8397fc78c
commit 6e5de26c6e
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      board/netstal/hcu4/hcu4.c

393
board/netstal/hcu4/hcu4.c
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/*
*(C) Copyright 2005-2007 Netstal Maschinen AG
* Niklaus Giger (Niklaus.Giger@netstal.com)
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form 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 <ppc4xx.h>
#include <asm/processor.h>
#include <asm/io.h>
#include <asm-ppc/u-boot.h>
#include "../common/nm_bsp.c"
DECLARE_GLOBAL_DATA_PTR;
void sysLedSet(u32 value);
long int spd_sdram(int(read_spd)(uint addr))
#ifdef CONFIG_SPD_EEPROM
#define DEBUG
#endif
#if defined(DEBUG)
void show_sdram_registers(void);
#endif
/*
* This function is run very early, out of flash, and before devices are
* initialized. It is called by lib_ppc/board.c:board_init_f by virtue
* of being in the init_sequence array.
*
* The SDRAM has been initialized already -- start.S:start called
* init.S:init_sdram early on -- but it is not yet being used for
* anything, not even stack. So be careful.
*/
#define CPC0_CR0 0xb1 /* Chip control register 0 */
#define CPC0_CR1 0xb2 /* Chip control register 1 */
/* Attention: If you want 1 microsecs times from the external oscillator
* use 0x00804051. But this causes problems with u-boot and linux!
*/
#define CPC0_CR1_VALUE 0x00004051
#define CPC0_ECR 0xaa /* Edge condition register */
#define EBC0_CFG 0x23 /* External Peripheral Control Register */
#define CPC0_EIRR 0xb6 /* External Interrupt Register */
int board_early_init_f (void)
{
/*-------------------------------------------------------------------+
| Interrupt controller setup for the HCU4 board.
| Note: IRQ 0-15 405GP internally generated; high; level sensitive
| IRQ 16 405GP internally generated; low; level sensitive
| IRQ 17-24 RESERVED/UNUSED
| IRQ 31 (EXT IRQ 6) (unused)
+-------------------------------------------------------------------*/
mtdcr (uicsr, 0xFFFFFFFF); /* clear all ints */
mtdcr (uicer, 0x00000000); /* disable all ints */
mtdcr (uiccr, 0x00000000); /* set all to be non-critical */
mtdcr (uicpr, 0xFFFFFF87); /* set int polarities */
mtdcr (uictr, 0x10000000); /* set int trigger levels */
mtdcr (uicsr, 0xFFFFFFFF); /* clear all ints */
mtdcr(CPC0_CR1, CPC0_CR1_VALUE);
mtdcr(CPC0_ECR, 0x60606000);
mtdcr(CPC0_EIRR, 0x7c000000);
return 0;
}
#ifdef CONFIG_BOARD_PRE_INIT
int board_pre_init (void)
{
return board_early_init_f ();
}
#endif
enum {
/* HW_GENERATION_HCU wird nicht mehr unterstuetzt */
HW_GENERATION_HCU2 = 0x10,
HW_GENERATION_HCU3 = 0x10,
HW_GENERATION_HCU4 = 0x20,
HW_GENERATION_MCU = 0x08,
HW_GENERATION_MCU20 = 0x0a,
HW_GENERATION_MCU25 = 0x09,
};
int checkboard (void)
{
#define HCU_MACH_VERSIONS_REGISTER ( 0x7C000000 + 0xF00000 )
unsigned j;
uint16_t *boardVersReg = (uint16_t *) HCU_MACH_VERSIONS_REGISTER;
uint16_t generation = *boardVersReg & 0xf0;
uint16_t index = *boardVersReg & 0x0f;
/* Force /RTS to active. The board it not wired quite
correctly to use cts/rtc flow control, so just force the
/RST active and forget about it. */
writeb (readb (0xef600404) | 0x03, 0xef600404);
printf ("\nNetstal Maschinen AG ");
if (generation == HW_GENERATION_HCU3)
printf ("HCU3: index %d\n\n", index);
else if (generation == HW_GENERATION_HCU4)
printf ("HCU4: index %d\n\n", index);
/* GPIO here noch nicht richtig initialisert !!! */
sysLedSet(0);
for (j=0; j < 7;j++) {
sysLedSet(1 << j);
udelay(50*1000);
}
return 0;
}
u32 sysLedGet(void)
{
return( ~( (*(u32 *)GPIO0_OR)) >> 23) & 0xff;
}
void sysLedSet(u32 value /* value to place in LEDs */)
{
u32 tmp = ~value;
u32 *ledReg;
tmp = (tmp << 23) | 0x7FFFFF;
ledReg = (u32 *)GPIO0_OR;
*ledReg = tmp;
}
/*
* sdram_init - Dummy implementation for start.S, spd_sdram or initdram
* used for HCUx
*/
void sdram_init(void)
{
return;
}
#define mtsdram(reg, data) { mtdcr(memcfga,reg);mtdcr(memcfgd,data); }
#define mfsdram(value, reg) { mtdcr(memcfga,reg); value = mfdcr(memcfgd); }
#if defined(DEBUG)
void show_sdram_registers(void)
{
u32 value;
printf ("SDRAM Controller Registers --\n");
mfsdram(value, mem_mcopt1);
printf (" SDRAM0_CFG : 0x%08x\n", value);
mfsdram(value, mem_status);
printf (" SDRAM0_STATUS: 0x%08x\n", value);
mfsdram(value, mem_mb0cf);
printf (" SDRAM0_B0CR : 0x%08x\n", value);
mfsdram(value, mem_mb1cf);
printf (" SDRAM0_B1CR : 0x%08x\n", value);
mfsdram(value, mem_sdtr1);
printf (" SDRAM0_TR : 0x%08x\n", value);
mfsdram(value, mem_rtr);
printf (" SDRAM0_RTR : 0x%08x\n", value);
}
#endif
#define SDRAM_LEN 32*1024*1024 /* 32 MB -RAM */
/*
* this is even after checkboard. It returns the size of the SDRAM
* that we have installed. This function is called by board_init_f
* in lib_ppc/board.c to initialize the memory and return what I
* found. These are default value, which will be overridden later.
*/
long int fixed_hcu4_sdram (int board_type)
{
#ifdef DEBUG
printf (__FUNCTION__);
#endif
/* disable memory controller */
mtdcr (memcfga, mem_mcopt1);
mtdcr (memcfgd, 0x00000000);
udelay (500);
/* Clear SDRAM0_BESR0 (Bus Error Syndrome Register) */
mtdcr (memcfga, mem_besra);
mtdcr (memcfgd, 0xffffffff);
/* Clear SDRAM0_BESR1 (Bus Error Syndrome Register) */
mtdcr (memcfga, mem_besrb);
mtdcr (memcfgd, 0xffffffff);
/* Clear SDRAM0_ECCCFG (disable ECC) */
mtdcr (memcfga, mem_ecccf);
mtdcr (memcfgd, 0x00000000);
/* Clear SDRAM0_ECCESR (ECC Error Syndrome Register) */
mtdcr (memcfga, mem_eccerr);
mtdcr (memcfgd, 0xffffffff);
/* Timing register: CASL=2, PTA=2, CTP=2, LDF=1, RFTA=5, RCD=2
* TODO ngngng
*/
mtdcr (memcfga, mem_sdtr1);
mtdcr (memcfgd, 0x008a4015);
/* Memory Bank 0 Config == BA=0x00000000, SZ=64M, AM=3, BE=1
* TODO ngngng
*/
mtdcr (memcfga, mem_mb0cf);
mtdcr (memcfgd, 0x00062001);
/* refresh timer = 0x400 */
mtdcr (memcfga, mem_rtr);
mtdcr (memcfgd, 0x04000000);
/* Power management idle timer set to the default. */
mtdcr (memcfga, mem_pmit);
mtdcr (memcfgd, 0x07c00000);
udelay (500);
/* Enable banks (DCE=1, BPRF=1, ECCDD=1, EMDUL=1) TODO */
mtdcr (memcfga, mem_mcopt1);
mtdcr (memcfgd, 0x90800000);
#ifdef DEBUG
printf ("%s: done\n", __FUNCTION__);
#endif
return SDRAM_LEN;
}
/*---------------------------------------------------------------------------+
* getSerialNr
*---------------------------------------------------------------------------*/
static u32 getSerialNr(void)
{
u32 *serial = (u32 *)CFG_FLASH_BASE;
if (*serial == 0xffffffff) {
return get_ticks();
}
return *serial;
}
/*---------------------------------------------------------------------------+
* misc_init_r.
*---------------------------------------------------------------------------*/
int misc_init_r(void)
{
char *s = getenv("ethaddr");
char *e;
int i;
u32 serial = getSerialNr();
for (i = 0; i < 6; ++i) {
gd->bd->bi_enetaddr[i] = s ? simple_strtoul (s, &e, 16) : 0;
if (s)
s = (*e) ? e + 1 : e;
}
if (gd->bd->bi_enetaddr[3] == 0 &&
gd->bd->bi_enetaddr[4] == 0 &&
gd->bd->bi_enetaddr[5] == 0) {
char ethaddr[22];
/* [0..3] Must be in sync with CONFIG_ETHADDR */
gd->bd->bi_enetaddr[0] = 0x00;
gd->bd->bi_enetaddr[1] = 0x60;
gd->bd->bi_enetaddr[2] = 0x13;
gd->bd->bi_enetaddr[3] = (serial >> 16) & 0xff;
gd->bd->bi_enetaddr[4] = (serial >> 8) & 0xff;
gd->bd->bi_enetaddr[5] = (serial >> 0) & 0xff;
sprintf (ethaddr, "%02X:%02X:%02X:%02X:%02X:%02X\0",
gd->bd->bi_enetaddr[0], gd->bd->bi_enetaddr[1],
gd->bd->bi_enetaddr[2], gd->bd->bi_enetaddr[3],
gd->bd->bi_enetaddr[4], gd->bd->bi_enetaddr[5]) ;
printf("%s: Setting eth %s serial 0x%x\n", __FUNCTION__,
ethaddr, serial);
setenv ("ethaddr", ethaddr);
}
return 0;
}
#define DO_UGLY_SDRAM_WORKAROUND
#ifdef DO_UGLY_SDRAM_WORKAROUND
#include "i2c.h"
void set_spd_default_value(unsigned int spd_addr,uchar def_val)
{
uchar value;
int res = i2c_read(SPD_EEPROM_ADDRESS, spd_addr, 1, &value, 1) ;
if (res == 0 && value == 0xff) {
res = i2c_write(SPD_EEPROM_ADDRESS,
spd_addr, 1, &def_val, 1) ;
#ifdef DEBUG
printf("%s: Setting spd offset %3d to %3d res %d\n",
__FUNCTION__, spd_addr, def_val, res);
#endif
}
}
#endif
long int initdram(int board_type)
{
long dram_size = 0;
#if !defined(CONFIG_SPD_EEPROM)
dram_size = fixed_hcu4_sdram();
#else
#ifdef DO_UGLY_SDRAM_WORKAROUND
/* Workaround if you have no working I2C-EEPROM-SPD-configuration */
i2c_init(CFG_I2C_SPEED, CFG_I2C_SLAVE);
set_spd_default_value(2, 4); /* SDRAM Type */
set_spd_default_value(7, 0); /* module width, high byte */
set_spd_default_value(12, 1); /* Refresh or 0x81 */
/* Only correct for HCU3 with 32 MB RAM*/
/* Number of bytes used by module manufacturer */
set_spd_default_value( 0, 128);
set_spd_default_value( 1, 11 ); /* Total SPD memory size */
set_spd_default_value( 2, 4 ); /* Memory type */
set_spd_default_value( 3, 12 ); /* Number of row address bits */
set_spd_default_value( 4, 9 ); /* Number of column address bits */
set_spd_default_value( 5, 1 ); /* Number of module rows */
set_spd_default_value( 6, 32 ); /* Module data width, LSB */
set_spd_default_value( 7, 0 ); /* Module data width, MSB */
set_spd_default_value( 8, 1 ); /* Module interface signal levels */
/* SDRAM cycle time for highest CL (Tclk) */
set_spd_default_value( 9, 112);
/* SDRAM access time from clock for highest CL (Tac) */
set_spd_default_value(10, 84 );
set_spd_default_value(11, 2 ); /* Module configuration type */
set_spd_default_value(12, 128); /* Refresh rate/type */
set_spd_default_value(13, 16 ); /* Primary SDRAM width */
set_spd_default_value(14, 8 ); /* Error Checking SDRAM width */
/* SDRAM device attributes, min clock delay for back to back */
/*random column addresses (Tccd) */
set_spd_default_value(15, 1 );
/* SDRAM device attributes, burst lengths supported */
set_spd_default_value(16, 143);
/* SDRAM device attributes, number of banks on SDRAM device */
set_spd_default_value(17, 4 );
/* SDRAM device attributes, CAS latency */
set_spd_default_value(18, 6 );
/* SDRAM device attributes, CS latency */
set_spd_default_value(19, 1 );
/* SDRAM device attributes, WE latency */
set_spd_default_value(20, 1 );
set_spd_default_value(21, 0 ); /* SDRAM module attributes */
/* SDRAM device attributes, general */
set_spd_default_value(22, 14 );
/* SDRAM cycle time for 2nd highest CL (Tclk) */
set_spd_default_value(23, 117);
/* SDRAM access time from clock for2nd highest CL (Tac) */
set_spd_default_value(24, 84 );
/* SDRAM cycle time for 3rd highest CL (Tclk) */
set_spd_default_value(25, 0 );
/* SDRAM access time from clock for3rd highest CL (Tac) */
set_spd_default_value(26, 0 );
set_spd_default_value(27, 15 ); /* Minimum row precharge time (Trp) */
/* Minimum row active to row active delay (Trrd) */
set_spd_default_value(28, 14 );
set_spd_default_value(29, 15 ); /* Minimum CAS to RAS delay (Trcd) */
set_spd_default_value(30, 37 ); /* Minimum RAS pulse width (Tras) */
set_spd_default_value(31, 8 ); /* Module bank density */
/* Command and Address signal input setup time */
set_spd_default_value(32, 21 );
/* Command and Address signal input hold time */
set_spd_default_value(33, 8 );
set_spd_default_value(34, 21 ); /* Data signal input setup time */
set_spd_default_value(35, 8 ); /* Data signal input hold time */
#endif /* DO_UGLY_SDRAM_WORKAROUND */
dram_size = spd_sdram(0);
#endif
#ifdef DEBUG
show_sdram_registers();
#endif
#if defined(CFG_DRAM_TEST)
bcu4_testdram(dram_size);
printf("%s %d MB of SDRAM\n", __FUNCTION__, dram_size/(1024*1024));
#endif
return dram_size;
}
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