diff options
Diffstat (limited to 'qemu/roms/u-boot/board/fads/fads.c')
| -rw-r--r-- | qemu/roms/u-boot/board/fads/fads.c | 870 |
1 files changed, 0 insertions, 870 deletions
diff --git a/qemu/roms/u-boot/board/fads/fads.c b/qemu/roms/u-boot/board/fads/fads.c deleted file mode 100644 index fdb46b1f3..000000000 --- a/qemu/roms/u-boot/board/fads/fads.c +++ /dev/null @@ -1,870 +0,0 @@ -/* - * (C) Copyright 2000-2004 - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * Modified by, Yuli Barcohen, Arabella Software Ltd., yuli@arabellasw.com - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#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 */ - memctl->memc_mamr = 0x13a01114; /* PTA 0x13 AMA 010 */ - 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 */ - memctl->memc_mamr = 0x13b01114; /* PTA 0x13 AMA 011 */ - 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 m = 0; /* size of dram in Mbytes */ -#ifndef CONFIG_MPC885ADS - uint base = 0; /* base of dram in bytes */ - uint k, s; -#endif - -#ifdef CONFIG_FADS - if (!initsdram (0x00000000, &sdramsz)) { -#ifndef CONFIG_MPC885ADS - base = sdramsz << 20; -#endif - 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: - */ - -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) { - case 0x00: - puts ("ENG\n"); - break; - case 0x01: - puts ("PILOT\n"); - break; - 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_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 */ |