diff options
Diffstat (limited to 'u-boot/board/fads/fads.c')
| -rw-r--r-- | u-boot/board/fads/fads.c | 949 |
1 files changed, 949 insertions, 0 deletions
diff --git a/u-boot/board/fads/fads.c b/u-boot/board/fads/fads.c new file mode 100644 index 0000000..9f7faaf --- /dev/null +++ b/u-boot/board/fads/fads.c @@ -0,0 +1,949 @@ +/* + * (C) Copyright 2000-2004 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * Modified by, Yuli Barcohen, Arabella Software Ltd., yuli@arabellasw.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 <config.h> +#include <common.h> +#include <mpc8xx.h> +#include <pcmcia.h> + +#define _NOT_USED_ 0xFFFFFFFF + +/* ========================================================================= */ + +#ifndef CONFIG_MPC885ADS /* No old DRAM on MPC885ADS */ + +#if defined(CONFIG_DRAM_50MHZ) +/* 50MHz tables */ +static const uint dram_60ns[] = +{ 0x8fffec24, 0x0fffec04, 0x0cffec04, 0x00ffec04, + 0x00ffec00, 0x37ffec47, _NOT_USED_, _NOT_USED_, + 0x8fffec24, 0x0fffec04, 0x08ffec04, 0x00ffec0c, + 0x03ffec00, 0x00ffec44, 0x00ffcc08, 0x0cffcc44, + 0x00ffec0c, 0x03ffec00, 0x00ffec44, 0x00ffcc00, + 0x3fffc847, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x8fafcc24, 0x0fafcc04, 0x0cafcc00, 0x11bfcc47, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x8fafcc24, 0x0fafcc04, 0x0cafcc00, 0x03afcc4c, + 0x0cafcc00, 0x03afcc4c, 0x0cafcc00, 0x03afcc4c, + 0x0cafcc00, 0x33bfcc4f, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0xc0ffcc84, 0x00ffcc04, 0x07ffcc04, 0x3fffcc06, + 0xffffcc85, 0xffffcc05, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ }; + +static const uint dram_70ns[] = +{ 0x8fffcc24, 0x0fffcc04, 0x0cffcc04, 0x00ffcc04, + 0x00ffcc00, 0x37ffcc47, _NOT_USED_, _NOT_USED_, + 0x8fffcc24, 0x0fffcc04, 0x0cffcc04, 0x00ffcc04, + 0x00ffcc08, 0x0cffcc44, 0x00ffec0c, 0x03ffec00, + 0x00ffec44, 0x00ffcc08, 0x0cffcc44, 0x00ffec04, + 0x00ffec00, 0x3fffec47, _NOT_USED_, _NOT_USED_, + 0x8fafcc24, 0x0fafcc04, 0x0cafcc00, 0x11bfcc47, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x8fafcc24, 0x0fafcc04, 0x0cafcc00, 0x03afcc4c, + 0x0cafcc00, 0x03afcc4c, 0x0cafcc00, 0x03afcc4c, + 0x0cafcc00, 0x33bfcc4f, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0xe0ffcc84, 0x00ffcc04, 0x00ffcc04, 0x0fffcc04, + 0x7fffcc06, 0xffffcc85, 0xffffcc05, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ }; + +static const uint edo_60ns[] = +{ 0x8ffbec24, 0x0ff3ec04, 0x0cf3ec04, 0x00f3ec04, + 0x00f3ec00, 0x37f7ec47, _NOT_USED_, _NOT_USED_, + 0x8fffec24, 0x0ffbec04, 0x0cf3ec04, 0x00f3ec0c, + 0x0cf3ec00, 0x00f3ec4c, 0x0cf3ec00, 0x00f3ec4c, + 0x0cf3ec00, 0x00f3ec44, 0x03f3ec00, 0x3ff7ec47, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x8fffcc24, 0x0fefcc04, 0x0cafcc00, 0x11bfcc47, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x8fffcc24, 0x0fefcc04, 0x0cafcc00, 0x03afcc4c, + 0x0cafcc00, 0x03afcc4c, 0x0cafcc00, 0x03afcc4c, + 0x0cafcc00, 0x33bfcc4f, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0xc0ffcc84, 0x00ffcc04, 0x07ffcc04, 0x3fffcc06, + 0xffffcc85, 0xffffcc05, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ }; + +static const uint edo_70ns[] = +{ 0x8ffbcc24, 0x0ff3cc04, 0x0cf3cc04, 0x00f3cc04, + 0x00f3cc00, 0x37f7cc47, _NOT_USED_, _NOT_USED_, + 0x8fffcc24, 0x0ffbcc04, 0x0cf3cc04, 0x00f3cc0c, + 0x03f3cc00, 0x00f3cc44, 0x00f3ec0c, 0x0cf3ec00, + 0x00f3ec4c, 0x03f3ec00, 0x00f3ec44, 0x00f3cc00, + 0x33f7cc47, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x8fffcc24, 0x0fefcc04, 0x0cafcc00, 0x11bfcc47, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x8fffcc24, 0x0fefcc04, 0x0cafcc00, 0x03afcc4c, + 0x0cafcc00, 0x03afcc4c, 0x0cafcc00, 0x03afcc4c, + 0x0cafcc00, 0x33bfcc47, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0xe0ffcc84, 0x00ffcc04, 0x00ffcc04, 0x0fffcc04, + 0x7fffcc04, 0xffffcc86, 0xffffcc05, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ }; + +#elif defined(CONFIG_DRAM_25MHZ) + +/* 25MHz tables */ + +static const uint dram_60ns[] = +{ 0x0fffcc04, 0x08ffcc00, 0x33ffcc47, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x0fffcc24, 0x0fffcc04, 0x08ffcc00, 0x03ffcc4c, + 0x08ffcc00, 0x03ffcc4c, 0x08ffcc00, 0x03ffcc4c, + 0x08ffcc00, 0x33ffcc47, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x0fafcc04, 0x08afcc00, 0x3fbfcc47, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x0fafcc04, 0x0cafcc00, 0x01afcc4c, 0x0cafcc00, + 0x01afcc4c, 0x0cafcc00, 0x01afcc4c, 0x0cafcc00, + 0x31bfcc43, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x80ffcc84, 0x13ffcc04, 0xffffcc87, 0xffffcc05, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ }; + +static const uint dram_70ns[] = +{ 0x0fffec04, 0x08ffec04, 0x00ffec00, 0x3fffcc47, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x0fffcc24, 0x0fffcc04, 0x08ffcc00, 0x03ffcc4c, + 0x08ffcc00, 0x03ffcc4c, 0x08ffcc00, 0x03ffcc4c, + 0x08ffcc00, 0x33ffcc47, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x0fafcc04, 0x08afcc00, 0x3fbfcc47, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x0fafcc04, 0x0cafcc00, 0x01afcc4c, 0x0cafcc00, + 0x01afcc4c, 0x0cafcc00, 0x01afcc4c, 0x0cafcc00, + 0x31bfcc43, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0xc0ffcc84, 0x01ffcc04, 0x7fffcc86, 0xffffcc05, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ }; + +static const uint edo_60ns[] = +{ 0x0ffbcc04, 0x0cf3cc04, 0x00f3cc00, 0x33f7cc47, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x0ffbcc04, 0x09f3cc0c, 0x09f3cc0c, 0x09f3cc0c, + 0x08f3cc00, 0x3ff7cc47, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x0fefcc04, 0x08afcc04, 0x00afcc00, 0x3fbfcc47, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x0fefcc04, 0x08afcc00, 0x07afcc48, 0x08afcc48, + 0x08afcc48, 0x39bfcc47, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x80ffcc84, 0x13ffcc04, 0xffffcc87, 0xffffcc05, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ }; + +static const uint edo_70ns[] = +{ 0x0ffbcc04, 0x0cf3cc04, 0x00f3cc00, 0x33f7cc47, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x0ffbec04, 0x08f3ec04, 0x03f3ec48, 0x08f3cc00, + 0x0ff3cc4c, 0x08f3cc00, 0x0ff3cc4c, 0x08f3cc00, + 0x3ff7cc47, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x0fefcc04, 0x08afcc04, 0x00afcc00, 0x3fbfcc47, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x0fefcc04, 0x08afcc00, 0x07afcc4c, 0x08afcc00, + 0x07afcc4c, 0x08afcc00, 0x07afcc4c, 0x08afcc00, + 0x37bfcc47, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0xc0ffcc84, 0x01ffcc04, 0x7fffcc86, 0xffffcc05, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + 0x33ffcc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ }; +#else +#error dram not correctly defined - use CONFIG_DRAM_25MHZ or CONFIG_DRAM_50MHZ +#endif + +/* ------------------------------------------------------------------------- */ +static int _draminit (uint base, uint noMbytes, uint edo, uint delay) +{ + volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR; + volatile memctl8xx_t *memctl = &immap->im_memctl; + + /* init upm */ + + switch (delay) { + case 70: + if (edo) { + upmconfig (UPMA, (uint *) edo_70ns, + sizeof (edo_70ns) / sizeof (uint)); + } else { + upmconfig (UPMA, (uint *) dram_70ns, + sizeof (dram_70ns) / sizeof (uint)); + } + + break; + + case 60: + if (edo) { + upmconfig (UPMA, (uint *) edo_60ns, + sizeof (edo_60ns) / sizeof (uint)); + } else { + upmconfig (UPMA, (uint *) dram_60ns, + sizeof (dram_60ns) / sizeof (uint)); + } + + break; + + default: + return -1; + } + + memctl->memc_mptpr = 0x0400; /* divide by 16 */ + + switch (noMbytes) { + case 4: /* 4 Mbyte uses only CS2 */ +#ifdef CONFIG_ADS + memctl->memc_mamr = 0xc0a21114; +#else + memctl->memc_mamr = 0x13a01114; /* PTA 0x13 AMA 010 */ +#endif + memctl->memc_or2 = 0xffc00800; /* 4M */ + break; + + case 8: /* 8 Mbyte uses both CS3 and CS2 */ + memctl->memc_mamr = 0x13a01114; /* PTA 0x13 AMA 010 */ + memctl->memc_or3 = 0xffc00800; /* 4M */ + memctl->memc_br3 = 0x00400081 + base; + memctl->memc_or2 = 0xffc00800; /* 4M */ + break; + + case 16: /* 16 Mbyte uses only CS2 */ +#ifdef CONFIG_ADS /* XXX: why PTA=0x60 only in 16M case? - NTL */ + memctl->memc_mamr = 0x60b21114; /* PTA 0x60 AMA 011 */ +#else + memctl->memc_mamr = 0x13b01114; /* PTA 0x13 AMA 011 */ +#endif + memctl->memc_or2 = 0xff000800; /* 16M */ + break; + + case 32: /* 32 Mbyte uses both CS3 and CS2 */ + memctl->memc_mamr = 0x13b01114; /* PTA 0x13 AMA 011 */ + memctl->memc_or3 = 0xff000800; /* 16M */ + memctl->memc_br3 = 0x01000081 + base; + memctl->memc_or2 = 0xff000800; /* 16M */ + break; + + default: + return -1; + } + + memctl->memc_br2 = 0x81 + base; /* use upma */ + + *((uint *) BCSR1) &= ~BCSR1_DRAM_EN; /* enable dram */ + + /* if no dimm is inserted, noMbytes is still detected as 8m, so + * sanity check top and bottom of memory */ + + /* check bytes / 2 because get_ram_size tests at base+bytes, which + * is not mapped */ + if (noMbytes == 8) + if (get_ram_size ((long *) base, noMbytes << 19) != noMbytes << 19) { + *((uint *) BCSR1) |= BCSR1_DRAM_EN; /* disable dram */ + return -1; + } + + return 0; +} + +/* ------------------------------------------------------------------------- */ + +static void _dramdisable(void) +{ + volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; + volatile memctl8xx_t *memctl = &immap->im_memctl; + + memctl->memc_br2 = 0x00000000; + memctl->memc_br3 = 0x00000000; + + /* maybe we should turn off upma here or something */ +} +#endif /* !CONFIG_MPC885ADS */ + +/* ========================================================================= */ + +#ifdef CONFIG_FADS /* SDRAM exists on FADS and newer boards */ + +#if defined(CONFIG_SDRAM_100MHZ) + +/* ------------------------------------------------------------------------- */ +/* sdram table by Dan Malek */ + +/* This has the stretched early timing so the 50 MHz + * processor can make the 100 MHz timing. This will + * work at all processor speeds. + */ + +#ifdef SDRAM_ALT_INIT_SEQENCE +# define SDRAM_MBMRVALUE0 0xc3802114 /* PTx=195,PTxE,AMx=0,DSx=1,A11,RLFx=1,WLFx=1,TLFx=4 */ +#define SDRAM_MBMRVALUE1 SDRAM_MBMRVALUE0 +# define SDRAM_MCRVALUE0 0x80808111 /* run upmb cs4 loop 1 addr 0x11 MRS */ +# define SDRAM_MCRVALUE1 SDRAM_MCRVALUE0 /* ??? why not 0x80808130? */ +#else +# define SDRAM_MxMR_PTx 195 +# define UPM_MRS_ADDR 0x11 +# define UPM_REFRESH_ADDR 0x30 /* or 0x11 if we want to be like above? */ +#endif /* !SDRAM_ALT_INIT_SEQUENCE */ + +static const uint sdram_table[] = +{ + /* single read. (offset 0 in upm RAM) */ + 0xefebfc24, 0x1f07fc24, 0xeeaefc04, 0x11adfc04, + 0xefbbbc00, 0x1ff77c45, _NOT_USED_, _NOT_USED_, + + /* burst read. (offset 8 in upm RAM) */ + 0xefebfc24, 0x1f07fc24, 0xeeaefc04, 0x10adfc04, + 0xf0affc00, 0xf0affc00, 0xf1affc00, 0xefbbbc00, + 0x1ff77c45, + + /* precharge + MRS. (offset 11 in upm RAM) */ + 0xeffbbc04, 0x1ff77c34, 0xefeabc34, + 0x1fb57c35, _NOT_USED_, _NOT_USED_, _NOT_USED_, + + /* single write. (offset 18 in upm RAM) */ + 0xefebfc24, 0x1f07fc24, 0xeeaebc00, 0x01b93c04, + 0x1ff77c45, _NOT_USED_, _NOT_USED_, _NOT_USED_, + + /* burst write. (offset 20 in upm RAM) */ + 0xefebfc24, 0x1f07fc24, 0xeeaebc00, 0x10ad7c00, + 0xf0affc00, 0xf0affc00, 0xe1bbbc04, 0x1ff77c45, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + + /* refresh. (offset 30 in upm RAM) */ + 0xeffafc84, 0x1ff5fc04, 0xfffffc04, 0xfffffc04, + 0xfffffc84, 0xfffffc07, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + + /* exception. (offset 3c in upm RAM) */ + 0xeffffc06, 0x1ffffc07, _NOT_USED_, _NOT_USED_ }; + +#elif defined(CONFIG_SDRAM_50MHZ) + +/* ------------------------------------------------------------------------- */ +/* sdram table stolen from the fads manual */ +/* for chip MB811171622A-100 */ + +/* this table is for 32-50MHz operation */ +#ifdef SDRAM_ALT_INIT_SEQENCE +# define SDRAM_MBMRVALUE0 0x80802114 /* PTx=128,PTxE,AMx=0,DSx=1,A11,RLFx=1,WLFx=1,TLFx=4 */ +# define SDRAM_MBMRVALUE1 0x80802118 /* PTx=128,PTxE,AMx=0,DSx=1,A11,RLFx=1,WLFx=1,TLFx=8 */ +# define SDRAM_MCRVALUE0 0x80808105 /* run upmb cs4 loop 1 addr 0x5 MRS */ +# define SDRAM_MCRVALUE1 0x80808130 /* run upmb cs4 loop 1 addr 0x30 REFRESH */ +# define SDRAM_MPTRVALUE 0x400 +#define SDRAM_MARVALUE 0x88 +#else +# define SDRAM_MxMR_PTx 128 +# define UPM_MRS_ADDR 0x5 +# define UPM_REFRESH_ADDR 0x30 +#endif /* !SDRAM_ALT_INIT_SEQUENCE */ + +static const uint sdram_table[] = +{ + /* single read. (offset 0 in upm RAM) */ + 0x1f07fc04, 0xeeaefc04, 0x11adfc04, 0xefbbbc00, + 0x1ff77c47, + + /* precharge + MRS. (offset 5 in upm RAM) */ + 0x1ff77c34, 0xefeabc34, 0x1fb57c35, + + /* burst read. (offset 8 in upm RAM) */ + 0x1f07fc04, 0xeeaefc04, 0x10adfc04, 0xf0affc00, + 0xf0affc00, 0xf1affc00, 0xefbbbc00, 0x1ff77c47, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + + /* single write. (offset 18 in upm RAM) */ + 0x1f27fc04, 0xeeaebc00, 0x01b93c04, 0x1ff77c47, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + + /* burst write. (offset 20 in upm RAM) */ + 0x1f07fc04, 0xeeaebc00, 0x10ad7c00, 0xf0affc00, + 0xf0affc00, 0xe1bbbc04, 0x1ff77c47, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + + /* refresh. (offset 30 in upm RAM) */ + 0x1ff5fc84, 0xfffffc04, 0xfffffc04, 0xfffffc04, + 0xfffffc84, 0xfffffc07, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + + /* exception. (offset 3c in upm RAM) */ + 0x7ffffc07, _NOT_USED_, _NOT_USED_, _NOT_USED_ }; + +/* ------------------------------------------------------------------------- */ +#else +#error SDRAM not correctly configured +#endif +/* ------------------------------------------------------------------------- */ + +/* + * Memory Periodic Timer Prescaler + */ + +#define SDRAM_OR4VALUE 0x00000a00 /* SAM,GL5A/S=01,addr mask or'ed on later */ +#define SDRAM_BR4VALUE 0x000000c1 /* UPMB,base addr or'ed on later */ + +/* ------------------------------------------------------------------------- */ +#ifdef SDRAM_ALT_INIT_SEQENCE +/* ------------------------------------------------------------------------- */ + +static int _initsdram(uint base, uint noMbytes) +{ + volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; + volatile memctl8xx_t *memctl = &immap->im_memctl; + + upmconfig(UPMB, (uint *)sdram_table,sizeof(sdram_table)/sizeof(uint)); + + memctl->memc_mptpr = SDRAM_MPTPRVALUE; + + /* Configure the refresh (mostly). This needs to be + * based upon processor clock speed and optimized to provide + * the highest level of performance. For multiple banks, + * this time has to be divided by the number of banks. + * Although it is not clear anywhere, it appears the + * refresh steps through the chip selects for this UPM + * on each refresh cycle. + * We have to be careful changing + * UPM registers after we ask it to run these commands. + */ + + memctl->memc_mbmr = SDRAM_MBMRVALUE0; /* TLF 4 */ + memctl->memc_mar = SDRAM_MARVALUE; /* MRS code */ + + udelay(200); + + /* Now run the precharge/nop/mrs commands. + */ + + memctl->memc_mcr = 0x80808111; /* run umpb cs4 1 count 1, addr 0x11 ??? (50MHz) */ + /* run umpb cs4 1 count 1, addr 0x11 precharge+MRS (100MHz) */ + udelay(200); + + /* Run 8 refresh cycles */ + + memctl->memc_mcr = SDRAM_MCRVALUE0; /* run upmb cs4 loop 1 addr 0x5 precharge+MRS (50 MHz)*/ + /* run upmb cs4 loop 1 addr 0x11 precharge+MRS (100MHz) */ + + udelay(200); + + memctl->memc_mbmr = SDRAM_MBMRVALUE1; /* TLF 4 (100 MHz) or TLF 8 (50MHz) */ + memctl->memc_mcr = SDRAM_MCRVALUE1; /* run upmb cs4 loop 1 addr 0x30 refr (50 MHz) */ + /* run upmb cs4 loop 1 addr 0x11 precharge+MRS ??? (100MHz) */ + + udelay(200); + + memctl->memc_mbmr = SDRAM_MBMRVALUE0; /* TLF 4 */ + + memctl->memc_or4 = SDRAM_OR4VALUE | ~((noMbytes<<20)-1); + memctl->memc_br4 = SDRAM_BR4VALUE | base; + + return 0; +} + +/* ------------------------------------------------------------------------- */ +#else /* !SDRAM_ALT_INIT_SEQUENCE */ +/* ------------------------------------------------------------------------- */ + +/* refresh rate 15.6 us (= 64 ms / 4K = 62.4 / quad bursts) for <= 128 MBit */ +# define MPTPR_2BK_4K MPTPR_PTP_DIV16 /* setting for 2 banks */ +# define MPTPR_1BK_4K MPTPR_PTP_DIV32 /* setting for 1 bank */ + +/* refresh rate 7.8 us (= 64 ms / 8K = 31.2 / quad bursts) for 256 MBit */ +# define MPTPR_2BK_8K MPTPR_PTP_DIV8 /* setting for 2 banks */ +# define MPTPR_1BK_8K MPTPR_PTP_DIV16 /* setting for 1 bank */ + +/* + * MxMR settings for SDRAM + */ + +/* 8 column SDRAM */ +# define SDRAM_MxMR_8COL ((SDRAM_MxMR_PTx << MBMR_PTB_SHIFT) | MBMR_PTBE | \ + MBMR_AMB_TYPE_0 | MBMR_DSB_1_CYCL | MBMR_G0CLB_A11 | \ + MBMR_RLFB_1X | MBMR_WLFB_1X | MBMR_TLFB_4X) +/* 9 column SDRAM */ +# define SDRAM_MxMR_9COL ((SDRAM_MxMR_PTx << MBMR_PTB_SHIFT) | MBMR_PTAE | \ + MBMR_AMB_TYPE_1 | MBMR_DSB_1_CYCL | MBMR_G0CLB_A10 | \ + MBMR_RLFB_1X | MBMR_WLFB_1X | MBMR_TLFB_4X) + +static int _initsdram(uint base, uint noMbytes) +{ + volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; + volatile memctl8xx_t *memctl = &immap->im_memctl; + + upmconfig(UPMB, (uint *)sdram_table,sizeof(sdram_table)/sizeof(uint)); + + memctl->memc_mptpr = MPTPR_2BK_4K; + memctl->memc_mbmr = SDRAM_MxMR_8COL & (~(MBMR_PTBE)); /* no refresh yet */ + + /* map CS 4 */ + memctl->memc_or4 = SDRAM_OR4VALUE | ~((noMbytes<<20)-1); + memctl->memc_br4 = SDRAM_BR4VALUE | base; + + /* Perform SDRAM initilization */ +# ifdef UPM_NOP_ADDR /* not currently in UPM table */ + /* step 1: nop */ + memctl->memc_mar = 0x00000000; + memctl->memc_mcr = MCR_UPM_B | MCR_OP_RUN | MCR_MB_CS4 | + MCR_MLCF(0) | UPM_NOP_ADDR; +# endif + + /* step 2: delay */ + udelay(200); + +# ifdef UPM_PRECHARGE_ADDR /* merged with MRS in UPM table */ + /* step 3: precharge */ + memctl->memc_mar = 0x00000000; + memctl->memc_mcr = MCR_UPM_B | MCR_OP_RUN | MCR_MB_CS4 | + MCR_MLCF(4) | UPM_PRECHARGE_ADDR; +# endif + + /* step 4: refresh */ + memctl->memc_mar = 0x00000000; + memctl->memc_mcr = MCR_UPM_B | MCR_OP_RUN | MCR_MB_CS4 | + MCR_MLCF(2) | UPM_REFRESH_ADDR; + + /* + * note: for some reason, the UPM values we are using include + * precharge with MRS + */ + + /* step 5: mrs */ + memctl->memc_mar = 0x00000088; + memctl->memc_mcr = MCR_UPM_B | MCR_OP_RUN | MCR_MB_CS4 | + MCR_MLCF(1) | UPM_MRS_ADDR; + +# ifdef UPM_NOP_ADDR + memctl->memc_mar = 0x00000000; + memctl->memc_mcr = MCR_UPM_B | MCR_OP_RUN | MCR_MB_CS4 | + MCR_MLCF(0) | UPM_NOP_ADDR; +# endif + /* + * Enable refresh + */ + + memctl->memc_mbmr |= MBMR_PTBE; + return 0; +} +#endif /* !SDRAM_ALT_INIT_SEQUENCE */ + +/* ------------------------------------------------------------------------- */ + +static void _sdramdisable(void) +{ + volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; + volatile memctl8xx_t *memctl = &immap->im_memctl; + + memctl->memc_br4 = 0x00000000; + + /* maybe we should turn off upmb here or something */ +} + +/* ------------------------------------------------------------------------- */ + +static int initsdram(uint base, uint *noMbytes) +{ + uint m = CONFIG_SYS_SDRAM_SIZE>>20; + + /* _initsdram needs access to sdram */ + *((uint *)BCSR1) |= BCSR1_SDRAM_EN; /* enable sdram */ + + if(!_initsdram(base, m)) + { + *noMbytes += m; + return 0; + } + else + { + *((uint *)BCSR1) &= ~BCSR1_SDRAM_EN; /* disable sdram */ + + _sdramdisable(); + + return -1; + } +} + +#endif /* CONFIG_FADS */ + +/* ========================================================================= */ + +phys_size_t initdram (int board_type) +{ + uint sdramsz = 0; /* size of sdram in Mbytes */ + uint base = 0; /* base of dram in bytes */ + uint m = 0; /* size of dram in Mbytes */ +#ifndef CONFIG_MPC885ADS + uint k, s; +#endif + +#ifdef CONFIG_FADS + if (!initsdram (0x00000000, &sdramsz)) { + base = sdramsz << 20; + printf ("(%u MB SDRAM) ", sdramsz); + } +#endif +#ifndef CONFIG_MPC885ADS /* No old DRAM on MPC885ADS */ + k = (*((uint *) BCSR2) >> 23) & 0x0f; + + switch (k & 0x3) { + /* "MCM36100 / MT8D132X" */ + case 0x00: + m = 4; + break; + + /* "MCM36800 / MT16D832X" */ + case 0x01: + m = 32; + break; + /* "MCM36400 / MT8D432X" */ + case 0x02: + m = 16; + break; + /* "MCM36200 / MT16D832X ?" */ + case 0x03: + m = 8; + break; + + } + + switch (k >> 2) { + case 0x02: + k = 70; + break; + + case 0x03: + k = 60; + break; + + default: + printf ("unknown dramdelay (0x%x) - defaulting to 70 ns", k); + k = 70; + } + +#ifdef CONFIG_FADS + /* the FADS is missing this bit, all rams treated as non-edo */ + s = 0; +#else + s = (*((uint *) BCSR2) >> 27) & 0x01; +#endif + + if (!_draminit (base, m, s, k)) { + printf ("%dM %dns %sDRAM: ", m, k, s ? "EDO " : ""); + } else { + _dramdisable (); + m = 0; + } +#endif /* !CONFIG_MPC885ADS */ + m += sdramsz; /* add sdram size to total */ + + return (m << 20); +} + +/* ------------------------------------------------------------------------- */ + +int testdram (void) +{ + /* TODO: XXX XXX XXX */ + printf ("test: 16 MB - ok\n"); + + return (0); +} + +/* ========================================================================= */ + +/* + * Check Board Identity: + */ + +#if defined(CONFIG_FADS) && defined(CONFIG_SYS_DAUGHTERBOARD) +static void checkdboard(void) +{ + /* get db type from BCSR 3 */ + uint k = (*((uint *)BCSR3) >> 24) & 0x3f; + + puts (" with db "); + + switch(k) { + case 0x03 : + puts ("MPC823"); + break; + case 0x20 : + puts ("MPC801"); + break; + case 0x21 : + puts ("MPC850"); + break; + case 0x22 : + puts ("MPC821, MPC860 / MPC860SAR / MPC860T"); + break; + case 0x23 : + puts ("MPC860SAR"); + break; + case 0x24 : + case 0x2A : + puts ("MPC860T"); + break; + case 0x3F : + puts ("MPC850SAR"); + break; + default : printf("0x%x", k); + } +} +#endif /* defined(CONFIG_FADS) && defined(CONFIG_SYS_DAUGHTERBOARD) */ + +int checkboard (void) +{ +#if defined(CONFIG_MPC86xADS) + puts ("Board: MPC86xADS\n"); +#elif defined(CONFIG_MPC885ADS) + puts ("Board: MPC885ADS\n"); +#else /* Only old ADS/FADS have got revision ID in BCSR3 */ + uint r = (((*((uint *) BCSR3) >> 23) & 1) << 3) + | (((*((uint *) BCSR3) >> 19) & 1) << 2) + | (((*((uint *) BCSR3) >> 16) & 3)); + + puts ("Board: "); +#if defined(CONFIG_FADS) + puts ("FADS"); + checkdboard (); +#else + puts ("ADS"); +#endif + + puts (" rev "); + + switch (r) { +#if defined(CONFIG_ADS) + case 0x00: + puts ("ENG - this board sucks, check the errata, not supported\n"); + return -1; + case 0x01: + puts ("PILOT - warning, read errata \n"); + break; + case 0x02: + puts ("A - warning, read errata \n"); + break; + case 0x03: + puts ("B\n"); + break; +#else /* FADS */ + case 0x00: + puts ("ENG\n"); + break; + case 0x01: + puts ("PILOT\n"); + break; +#endif /* CONFIG_ADS */ + default: + printf ("unknown (0x%x)\n", r); + return -1; + } +#endif /* CONFIG_MPC86xADS */ + + return 0; +} + +/* ========================================================================= */ + +#if defined(CONFIG_CMD_PCMCIA) + +#ifdef CONFIG_SYS_PCMCIA_MEM_ADDR +volatile unsigned char *pcmcia_mem = (unsigned char*)CONFIG_SYS_PCMCIA_MEM_ADDR; +#endif + +int pcmcia_init(void) +{ + volatile pcmconf8xx_t *pcmp; + uint v, slota = 0, slotb = 0; + + /* + ** Enable the PCMCIA for a Flash card. + */ + pcmp = (pcmconf8xx_t *)(&(((immap_t *)CONFIG_SYS_IMMR)->im_pcmcia)); + +#if 0 + pcmp->pcmc_pbr0 = CONFIG_SYS_PCMCIA_MEM_ADDR; + pcmp->pcmc_por0 = 0xc00ff05d; +#endif + + /* Set all slots to zero by default. */ + pcmp->pcmc_pgcra = 0; + pcmp->pcmc_pgcrb = 0; +#ifdef CONFIG_PCMCIA_SLOT_A + pcmp->pcmc_pgcra = 0x40; +#endif +#ifdef CONFIG_PCMCIA_SLOT_B + pcmp->pcmc_pgcrb = 0x40; +#endif + + /* enable PCMCIA buffers */ + *((uint *)BCSR1) &= ~BCSR1_PCCEN; + + /* Check if any PCMCIA card is plugged in. */ + +#ifdef CONFIG_PCMCIA_SLOT_A + slota = (pcmp->pcmc_pipr & 0x18000000) == 0 ; +#endif +#ifdef CONFIG_PCMCIA_SLOT_B + slotb = (pcmp->pcmc_pipr & 0x00001800) == 0 ; +#endif + + if (!(slota || slotb)) { + printf("No card present\n"); + pcmp->pcmc_pgcra = 0; + pcmp->pcmc_pgcrb = 0; + return -1; + } + else + printf("Card present ("); + + v = 0; + + /* both the ADS and the FADS have a 5V keyed pcmcia connector (?) + ** + ** Paolo - Yes, but i have to insert some 3.3V card in that slot on + ** my FADS... :-) + */ + +#if defined(CONFIG_MPC86x) + switch ((pcmp->pcmc_pipr >> 30) & 3) +#elif defined(CONFIG_MPC823) || defined(CONFIG_MPC850) + switch ((pcmp->pcmc_pipr >> 14) & 3) +#endif + { + case 0x03 : + printf("5V"); + v = 5; + break; + case 0x01 : + printf("5V and 3V"); +#ifdef CONFIG_FADS + v = 3; /* User lower voltage if supported! */ +#else + v = 5; +#endif + break; + case 0x00 : + printf("5V, 3V and x.xV"); +#ifdef CONFIG_FADS + v = 3; /* User lower voltage if supported! */ +#else + v = 5; +#endif + break; + } + + switch (v) { +#ifdef CONFIG_FADS + case 3: + printf("; using 3V"); + /* + ** Enable 3 volt Vcc. + */ + *((uint *)BCSR1) &= ~BCSR1_PCCVCC1; + *((uint *)BCSR1) |= BCSR1_PCCVCC0; + break; +#endif + case 5: + printf("; using 5V"); +#ifdef CONFIG_ADS + /* + ** Enable 5 volt Vcc. + */ + *((uint *)BCSR1) &= ~BCSR1_PCCVCCON; +#endif +#ifdef CONFIG_FADS + /* + ** Enable 5 volt Vcc. + */ + *((uint *)BCSR1) &= ~BCSR1_PCCVCC0; + *((uint *)BCSR1) |= BCSR1_PCCVCC1; +#endif + break; + + default: + *((uint *)BCSR1) |= BCSR1_PCCEN; /* disable pcmcia */ + + printf("; unknown voltage"); + return -1; + } + printf(")\n"); + /* disable pcmcia reset after a while */ + + udelay(20); + +#ifdef CONFIG_PCMCIA_SLOT_A + pcmp->pcmc_pgcra = 0; +#endif +#ifdef CONFIG_PCMCIA_SLOT_B + pcmp->pcmc_pgcrb = 0; +#endif + + /* If you using a real hd you should give a short + * spin-up time. */ +#ifdef CONFIG_DISK_SPINUP_TIME + udelay(CONFIG_DISK_SPINUP_TIME); +#endif + + return 0; +} + +#endif + +/* ========================================================================= */ + +#ifdef CONFIG_SYS_PC_IDE_RESET + +void ide_set_reset(int on) +{ + volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR; + + /* + * Configure PC for IDE Reset Pin + */ + if (on) { /* assert RESET */ + immr->im_ioport.iop_pcdat &= ~(CONFIG_SYS_PC_IDE_RESET); + } else { /* release RESET */ + immr->im_ioport.iop_pcdat |= CONFIG_SYS_PC_IDE_RESET; + } + + /* program port pin as GPIO output */ + immr->im_ioport.iop_pcpar &= ~(CONFIG_SYS_PC_IDE_RESET); + immr->im_ioport.iop_pcso &= ~(CONFIG_SYS_PC_IDE_RESET); + immr->im_ioport.iop_pcdir |= CONFIG_SYS_PC_IDE_RESET; +} + +#endif /* CONFIG_SYS_PC_IDE_RESET */ |