diff options
Diffstat (limited to 'board/flagadm')
| -rw-r--r-- | board/flagadm/flagadm.c | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/board/flagadm/flagadm.c b/board/flagadm/flagadm.c new file mode 100644 index 0000000..bfd1525 --- /dev/null +++ b/board/flagadm/flagadm.c @@ -0,0 +1,150 @@ +/* + * (C) Copyright 2001 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * 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 <common.h> +#include <mpc8xx.h> + +#define _NOT_USED_ 0xFFFFFFFF + +/*Orginal table, GPL4 disabled*/ +const uint sdram_table[] = +{ + /* single read (offset 0x00 in upm ram) */ + 0x1f07cc04, 0xeeaeec04, 0x11adcc04, 0xefbbac00, + 0x1ff74c47, + /* Precharge */ + 0x1FF74C05, + _NOT_USED_, + _NOT_USED_, + /* burst read (offset 0x08 in upm ram) */ + 0x1f07cc04, 0xeeaeec04, 0x00adcc04, 0x00afcc00, + 0x00afcc00, 0x01afcc00, 0x0fbb8c00, 0x1ff74c47, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + /* single write (offset 0x18 in upm ram) */ + 0x1f27cc04, 0xeeaeac00, 0x01b90c04, 0x1ff74c47, + /* Load moderegister */ + 0x1FF74C34, /*Precharge*/ + 0xEFEA8C34, /*NOP*/ + 0x1FB54C35, /*Load moderegister*/ + _NOT_USED_, + + /* burst write (offset 0x20 in upm ram) */ + 0x1f07cc04, 0xeeaeac00, 0x00ad4c00, 0x00afcc00, + 0x00afcc00, 0x01bb8c04, 0x1ff74c47, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + /* refresh (offset 0x30 in upm ram) */ + 0x1ff5cc84, 0xffffec04, 0xffffec04, 0xffffec04, + 0xffffec84, 0xffffec07, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + /* exception (offset 0x3C in upm ram) */ + 0x7fffec07, _NOT_USED_, _NOT_USED_, _NOT_USED_, +}; + +/* GPL5 driven every cycle */ +/* the display and the DSP */ +const uint dsp_disp_table[] = +{ + /* single read (offset 0x00 in upm ram) */ + 0xffffc80c, 0xffffc004, 0x0fffc004, 0x0fffd004, + 0x0fffc000, 0x0fffc004, 0x3fffc004, 0xffffcc05, + /* burst read (offset 0x08 in upm ram) */ + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + /* single write (offset 0x18 in upm ram) */ + 0xffffcc0c, 0xffffc004, 0x0fffc004, 0x0fffd004, + 0x0fffc000, 0x0fffc004, 0x7fffc004, 0xfffffc05, + /* burst write (offset 0x20 in upm ram) */ + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + /* refresh (offset 0x30 in upm ram) */ + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + /* exception (offset 0x3C in upm ram) */ + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, +}; + +int checkboard (void) +{ + puts ("Board: FlagaDM V3.0\n"); + return 0; +} + +long int initdram (int board_type) +{ + volatile immap_t *immap = (immap_t *)CFG_IMMR; + volatile memctl8xx_t *memctl = &immap->im_memctl; + long int size_b0; + + memctl->memc_or2 = CFG_OR2; + memctl->memc_br2 = CFG_BR2; + + udelay(100); + upmconfig(UPMA, (uint *)sdram_table, sizeof(sdram_table)/sizeof(uint)); + + memctl->memc_mptpr = MPTPR_PTP_DIV16; + memctl->memc_mamr = CFG_MAMR_48_SDR | MAMR_TLFA_1X; + + /*Do the initialization of the SDRAM*/ + /*Start with the precharge cycle*/ + memctl->memc_mcr = (MCR_OP_RUN | MCR_UPM_A | MCR_MB_CS2 | \ + MCR_MLCF(1) | MCR_MAD(0x5)); + + /*Then we need two refresh cycles*/ + memctl->memc_mamr = CFG_MAMR_48_SDR | MAMR_TLFA_2X; + memctl->memc_mcr = (MCR_OP_RUN | MCR_UPM_A | MCR_MB_CS2 | \ + MCR_MLCF(2) | MCR_MAD(0x30)); + + /*Mode register programming*/ + memctl->memc_mar = 0x00000088; /*CAS Latency = 2 and burst length = 4*/ + memctl->memc_mcr = (MCR_OP_RUN | MCR_UPM_A | MCR_MB_CS2 | \ + MCR_MLCF(1) | MCR_MAD(0x1C)); + + /* That should do it, just enable the periodic refresh in burst of 4*/ + memctl->memc_mamr = CFG_MAMR_48_SDR | MAMR_TLFA_4X; + memctl->memc_mamr |= (MAMR_PTAE | MAMR_GPL_B4DIS); + + size_b0 = 16*1024*1024; + + /* + * No bank 1 or 3 + * invalidate bank + */ + memctl->memc_br1 = 0; + memctl->memc_br3 = 0; + + upmconfig(UPMB, (uint *)dsp_disp_table, sizeof(dsp_disp_table)/sizeof(uint)); + + memctl->memc_mbmr = MAMR_GPL_B4DIS; + + memctl->memc_or4 = CFG_OR4; + memctl->memc_br4 = CFG_BR4; + + return (size_b0); +} |