mirror of
https://github.com/brain-hackers/u-boot-brain
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505 lines
13 KiB
C
505 lines
13 KiB
C
/*
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* (C) Copyright 2000-2006
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#if 0
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#define DEBUG
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#endif
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#include <common.h>
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#include <mpc8xx.h>
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#ifdef CONFIG_PS2MULT
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#include <ps2mult.h>
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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static long int dram_size (long int, long int *, long int);
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#define _NOT_USED_ 0xFFFFFFFF
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const uint sdram_table[] =
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{
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/*
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* Single Read. (Offset 0 in UPMA RAM)
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*/
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0x1F0DFC04, 0xEEAFBC04, 0x11AF7C04, 0xEFBAFC00,
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0x1FF5FC47, /* last */
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/*
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* SDRAM Initialization (offset 5 in UPMA RAM)
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*
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* This is no UPM entry point. The following definition uses
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* the remaining space to establish an initialization
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* sequence, which is executed by a RUN command.
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*
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*/
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0x1FF5FC34, 0xEFEABC34, 0x1FB57C35, /* last */
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/*
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* Burst Read. (Offset 8 in UPMA RAM)
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*/
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0x1F0DFC04, 0xEEAFBC04, 0x10AF7C04, 0xF0AFFC00,
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0xF0AFFC00, 0xF1AFFC00, 0xEFBAFC00, 0x1FF5FC47, /* last */
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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/*
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* Single Write. (Offset 18 in UPMA RAM)
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*/
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0x1F0DFC04, 0xEEABBC00, 0x01B27C04, 0x1FF5FC47, /* last */
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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/*
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* Burst Write. (Offset 20 in UPMA RAM)
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*/
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0x1F0DFC04, 0xEEABBC00, 0x10A77C00, 0xF0AFFC00,
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0xF0AFFC00, 0xE1BAFC04, 0x1FF5FC47, /* last */
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_NOT_USED_,
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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/*
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* Refresh (Offset 30 in UPMA RAM)
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*/
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0x1FFD7C84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04,
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0xFFFFFC84, 0xFFFFFC07, /* last */
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_NOT_USED_, _NOT_USED_,
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_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
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/*
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* Exception. (Offset 3c in UPMA RAM)
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*/
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0x7FFFFC07, /* last */
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_NOT_USED_, _NOT_USED_, _NOT_USED_,
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};
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/* ------------------------------------------------------------------------- */
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/*
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* Check Board Identity:
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*
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* Test TQ ID string (TQM8xx...)
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* If present, check for "L" type (no second DRAM bank),
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* otherwise "L" type is assumed as default.
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*
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* Set board_type to 'L' for "L" type, 'M' for "M" type, 0 else.
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*/
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int checkboard (void)
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{
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char *s = getenv ("serial#");
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puts ("Board: ");
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if (!s || strncmp (s, "TQM8", 4)) {
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puts ("### No HW ID - assuming TQM8xxL\n");
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return (0);
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}
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if ((*(s + 6) == 'L')) { /* a TQM8xxL type */
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gd->board_type = 'L';
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}
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if ((*(s + 6) == 'M')) { /* a TQM8xxM type */
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gd->board_type = 'M';
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}
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if ((*(s + 6) == 'D')) { /* a TQM885D type */
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gd->board_type = 'D';
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}
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for (; *s; ++s) {
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if (*s == ' ')
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break;
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putc (*s);
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}
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#ifdef CONFIG_VIRTLAB2
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puts (" (Virtlab2)");
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#endif
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putc ('\n');
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return (0);
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}
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/* ------------------------------------------------------------------------- */
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long int initdram (int board_type)
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{
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volatile immap_t *immap = (immap_t *) CFG_IMMR;
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volatile memctl8xx_t *memctl = &immap->im_memctl;
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long int size8, size9, size10;
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long int size_b0 = 0;
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long int size_b1 = 0;
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upmconfig (UPMA, (uint *) sdram_table,
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sizeof (sdram_table) / sizeof (uint));
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/*
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* Preliminary prescaler for refresh (depends on number of
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* banks): This value is selected for four cycles every 62.4 us
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* with two SDRAM banks or four cycles every 31.2 us with one
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* bank. It will be adjusted after memory sizing.
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*/
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memctl->memc_mptpr = CFG_MPTPR_2BK_8K;
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/*
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* The following value is used as an address (i.e. opcode) for
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* the LOAD MODE REGISTER COMMAND during SDRAM initialisation. If
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* the port size is 32bit the SDRAM does NOT "see" the lower two
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* address lines, i.e. mar=0x00000088 -> opcode=0x00000022 for
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* MICRON SDRAMs:
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* -> 0 00 010 0 010
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* | | | | +- Burst Length = 4
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* | | | +----- Burst Type = Sequential
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* | | +------- CAS Latency = 2
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* | +----------- Operating Mode = Standard
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* +-------------- Write Burst Mode = Programmed Burst Length
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*/
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memctl->memc_mar = 0x00000088;
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/*
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* Map controller banks 2 and 3 to the SDRAM banks 2 and 3 at
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* preliminary addresses - these have to be modified after the
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* SDRAM size has been determined.
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*/
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memctl->memc_or2 = CFG_OR2_PRELIM;
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memctl->memc_br2 = CFG_BR2_PRELIM;
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#ifndef CONFIG_CAN_DRIVER
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if ((board_type != 'L') &&
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(board_type != 'M') &&
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(board_type != 'D') ) { /* "L" and "M" type boards have only one bank SDRAM */
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memctl->memc_or3 = CFG_OR3_PRELIM;
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memctl->memc_br3 = CFG_BR3_PRELIM;
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}
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#endif /* CONFIG_CAN_DRIVER */
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memctl->memc_mamr = CFG_MAMR_8COL & (~(MAMR_PTAE)); /* no refresh yet */
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udelay (200);
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/* perform SDRAM initializsation sequence */
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memctl->memc_mcr = 0x80004105; /* SDRAM bank 0 */
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udelay (1);
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memctl->memc_mcr = 0x80004230; /* SDRAM bank 0 - execute twice */
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udelay (1);
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#ifndef CONFIG_CAN_DRIVER
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if ((board_type != 'L') &&
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(board_type != 'M') &&
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(board_type != 'D') ) { /* only one SDRAM bank on L, M and D modules */
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memctl->memc_mcr = 0x80006105; /* SDRAM bank 1 */
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udelay (1);
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memctl->memc_mcr = 0x80006230; /* SDRAM bank 1 - execute twice */
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udelay (1);
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}
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#endif /* CONFIG_CAN_DRIVER */
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memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */
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udelay (1000);
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/*
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* Check Bank 0 Memory Size for re-configuration
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*
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* try 8 column mode
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*/
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size8 = dram_size (CFG_MAMR_8COL, SDRAM_BASE2_PRELIM, SDRAM_MAX_SIZE);
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debug ("SDRAM Bank 0 in 8 column mode: %ld MB\n", size8 >> 20);
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udelay (1000);
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/*
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* try 9 column mode
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*/
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size9 = dram_size (CFG_MAMR_9COL, SDRAM_BASE2_PRELIM, SDRAM_MAX_SIZE);
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debug ("SDRAM Bank 0 in 9 column mode: %ld MB\n", size9 >> 20);
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udelay(1000);
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#if defined(CFG_MAMR_10COL)
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/*
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* try 10 column mode
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*/
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size10 = dram_size (CFG_MAMR_10COL, SDRAM_BASE2_PRELIM, SDRAM_MAX_SIZE);
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debug ("SDRAM Bank 0 in 10 column mode: %ld MB\n", size10 >> 20);
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#else
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size10 = 0;
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#endif /* CFG_MAMR_10COL */
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if ((size8 < size10) && (size9 < size10)) {
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size_b0 = size10;
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} else if ((size8 < size9) && (size10 < size9)) {
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size_b0 = size9;
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memctl->memc_mamr = CFG_MAMR_9COL;
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udelay (500);
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} else {
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size_b0 = size8;
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memctl->memc_mamr = CFG_MAMR_8COL;
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udelay (500);
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}
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debug ("SDRAM Bank 0: %ld MB\n", size_b0 >> 20);
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#ifndef CONFIG_CAN_DRIVER
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if ((board_type != 'L') &&
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(board_type != 'M') &&
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(board_type != 'D') ) { /* "L" and "M" type boards have only one bank SDRAM */
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/*
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* Check Bank 1 Memory Size
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* use current column settings
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* [9 column SDRAM may also be used in 8 column mode,
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* but then only half the real size will be used.]
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*/
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size_b1 = dram_size (memctl->memc_mamr, (long int *)SDRAM_BASE3_PRELIM,
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SDRAM_MAX_SIZE);
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debug ("SDRAM Bank 1: %ld MB\n", size_b1 >> 20);
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} else {
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size_b1 = 0;
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}
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#endif /* CONFIG_CAN_DRIVER */
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udelay (1000);
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/*
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* Adjust refresh rate depending on SDRAM type, both banks
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* For types > 128 MBit leave it at the current (fast) rate
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*/
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if ((size_b0 < 0x02000000) && (size_b1 < 0x02000000)) {
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/* reduce to 15.6 us (62.4 us / quad) */
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memctl->memc_mptpr = CFG_MPTPR_2BK_4K;
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udelay (1000);
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}
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/*
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* Final mapping: map bigger bank first
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*/
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if (size_b1 > size_b0) { /* SDRAM Bank 1 is bigger - map first */
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memctl->memc_or3 = ((-size_b1) & 0xFFFF0000) | CFG_OR_TIMING_SDRAM;
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memctl->memc_br3 = (CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V;
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if (size_b0 > 0) {
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/*
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* Position Bank 0 immediately above Bank 1
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*/
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memctl->memc_or2 = ((-size_b0) & 0xFFFF0000) | CFG_OR_TIMING_SDRAM;
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memctl->memc_br2 = ((CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V)
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+ size_b1;
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} else {
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unsigned long reg;
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/*
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* No bank 0
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*
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* invalidate bank
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*/
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memctl->memc_br2 = 0;
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/* adjust refresh rate depending on SDRAM type, one bank */
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reg = memctl->memc_mptpr;
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reg >>= 1; /* reduce to CFG_MPTPR_1BK_8K / _4K */
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memctl->memc_mptpr = reg;
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}
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} else { /* SDRAM Bank 0 is bigger - map first */
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memctl->memc_or2 = ((-size_b0) & 0xFFFF0000) | CFG_OR_TIMING_SDRAM;
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memctl->memc_br2 =
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(CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V;
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if (size_b1 > 0) {
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/*
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* Position Bank 1 immediately above Bank 0
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*/
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memctl->memc_or3 =
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((-size_b1) & 0xFFFF0000) | CFG_OR_TIMING_SDRAM;
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memctl->memc_br3 =
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((CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMA | BR_V)
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+ size_b0;
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} else {
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unsigned long reg;
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#ifndef CONFIG_CAN_DRIVER
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/*
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* No bank 1
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*
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* invalidate bank
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*/
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memctl->memc_br3 = 0;
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#endif /* CONFIG_CAN_DRIVER */
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/* adjust refresh rate depending on SDRAM type, one bank */
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reg = memctl->memc_mptpr;
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reg >>= 1; /* reduce to CFG_MPTPR_1BK_8K / _4K */
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memctl->memc_mptpr = reg;
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}
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}
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udelay (10000);
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#ifdef CONFIG_CAN_DRIVER
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/* Initialize OR3 / BR3 */
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memctl->memc_or3 = CFG_OR3_CAN;
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memctl->memc_br3 = CFG_BR3_CAN;
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/* Initialize MBMR */
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memctl->memc_mbmr = MBMR_GPL_B4DIS; /* GPL_B4 ouput line Disable */
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/* Initialize UPMB for CAN: single read */
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memctl->memc_mdr = 0xFFFFC004;
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memctl->memc_mcr = 0x0100 | UPMB;
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memctl->memc_mdr = 0x0FFFD004;
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memctl->memc_mcr = 0x0101 | UPMB;
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memctl->memc_mdr = 0x0FFFC000;
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memctl->memc_mcr = 0x0102 | UPMB;
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memctl->memc_mdr = 0x3FFFC004;
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memctl->memc_mcr = 0x0103 | UPMB;
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memctl->memc_mdr = 0xFFFFDC05;
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memctl->memc_mcr = 0x0104 | UPMB;
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/* Initialize UPMB for CAN: single write */
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memctl->memc_mdr = 0xFFFCC004;
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memctl->memc_mcr = 0x0118 | UPMB;
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memctl->memc_mdr = 0xCFFCD004;
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memctl->memc_mcr = 0x0119 | UPMB;
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memctl->memc_mdr = 0x0FFCC000;
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memctl->memc_mcr = 0x011A | UPMB;
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memctl->memc_mdr = 0x7FFCC004;
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memctl->memc_mcr = 0x011B | UPMB;
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memctl->memc_mdr = 0xFFFDCC05;
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memctl->memc_mcr = 0x011C | UPMB;
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#endif /* CONFIG_CAN_DRIVER */
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#ifdef CONFIG_ISP1362_USB
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/* Initialize OR5 / BR5 */
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memctl->memc_or5 = CFG_OR5_ISP1362;
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memctl->memc_br5 = CFG_BR5_ISP1362;
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#endif /* CONFIG_ISP1362_USB */
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return (size_b0 + size_b1);
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}
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/* ------------------------------------------------------------------------- */
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/*
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* Check memory range for valid RAM. A simple memory test determines
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* the actually available RAM size between addresses `base' and
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* `base + maxsize'. Some (not all) hardware errors are detected:
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* - short between address lines
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* - short between data lines
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*/
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static long int dram_size (long int mamr_value, long int *base, long int maxsize)
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{
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volatile immap_t *immap = (immap_t *) CFG_IMMR;
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volatile memctl8xx_t *memctl = &immap->im_memctl;
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memctl->memc_mamr = mamr_value;
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return (get_ram_size(base, maxsize));
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}
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/* ------------------------------------------------------------------------- */
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#ifdef CONFIG_PS2MULT
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#ifdef CONFIG_HMI10
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#define BASE_BAUD ( 1843200 / 16 )
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struct serial_state rs_table[] = {
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{ BASE_BAUD, 4, (void*)0xec140000 },
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{ BASE_BAUD, 2, (void*)0xec150000 },
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{ BASE_BAUD, 6, (void*)0xec160000 },
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{ BASE_BAUD, 10, (void*)0xec170000 },
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};
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#ifdef CONFIG_BOARD_EARLY_INIT_R
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int board_early_init_r (void)
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{
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ps2mult_early_init();
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return (0);
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}
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#endif
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#endif /* CONFIG_HMI10 */
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#endif /* CONFIG_PS2MULT */
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/* ---------------------------------------------------------------------------- */
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/* HMI10 specific stuff */
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/* ---------------------------------------------------------------------------- */
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#ifdef CONFIG_HMI10
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int misc_init_r (void)
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{
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# ifdef CONFIG_IDE_LED
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volatile immap_t *immap = (immap_t *) CFG_IMMR;
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/* Configure PA15 as output port */
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immap->im_ioport.iop_padir |= 0x0001;
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immap->im_ioport.iop_paodr |= 0x0001;
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immap->im_ioport.iop_papar &= ~0x0001;
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immap->im_ioport.iop_padat &= ~0x0001; /* turn it off */
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# endif
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return (0);
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}
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# ifdef CONFIG_IDE_LED
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void ide_led (uchar led, uchar status)
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{
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volatile immap_t *immap = (immap_t *) CFG_IMMR;
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/* We have one led for both pcmcia slots */
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if (status) { /* led on */
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immap->im_ioport.iop_padat |= 0x0001;
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} else {
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immap->im_ioport.iop_padat &= ~0x0001;
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}
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}
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# endif
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#endif /* CONFIG_HMI10 */
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/* ---------------------------------------------------------------------------- */
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/* NSCU specific stuff */
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/* ---------------------------------------------------------------------------- */
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#ifdef CONFIG_NSCU
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int misc_init_r (void)
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{
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volatile immap_t *immr = (immap_t *) CFG_IMMR;
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/* wake up ethernet module */
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immr->im_ioport.iop_pcpar &= ~0x0004; /* GPIO pin */
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immr->im_ioport.iop_pcdir |= 0x0004; /* output */
|
|
immr->im_ioport.iop_pcso &= ~0x0004; /* for clarity */
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immr->im_ioport.iop_pcdat |= 0x0004; /* enable */
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|
|
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return (0);
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|
}
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#endif /* CONFIG_NSCU */
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/* ------------------------------------------------------------------------- */
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