--- /dev/null
+/*
+ *(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;
+}
+
+
projects / karo-tx-uboot.git / commitdiff