diff options
Diffstat (limited to 'board/kup/kup4x/kup4x.c')
| -rwxr-xr-x | board/kup/kup4x/kup4x.c | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/board/kup/kup4x/kup4x.c b/board/kup/kup4x/kup4x.c new file mode 100755 index 0000000..cd9ed13 --- /dev/null +++ b/board/kup/kup4x/kup4x.c @@ -0,0 +1,312 @@ +/* + * (C) Copyright 2000-2004 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * Klaus Heydeck, Kieback & Peter GmbH & Co KG, heydeck@kieback-peter.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> +#include <post.h> +#include "../common/kup.h" +#ifdef CONFIG_KUP4K_LOGO +/* #include "s1d13706.h" */ +#endif + +#define KUP4X_USB + + +typedef struct { + volatile unsigned char *VmemAddr; + volatile unsigned char *RegAddr; +} FB_INFO_S1D13xxx; + +/* ------------------------------------------------------------------------- */ + +int usb_init_kup4x (void); + + +#ifdef CONFIG_KUP4K_LOGO +void lcd_logo (bd_t * bd); +#endif + +/* ------------------------------------------------------------------------- */ + +#define _NOT_USED_ 0xFFFFFFFF + +const uint sdram_table[] = { + /* + * Single Read. (Offset 0 in UPMA RAM) + */ + 0x1F07FC04, 0xEEAEFC04, 0x11ADFC04, 0xEFBBBC00, + 0x1FF77C47, /* last */ + + /* + * SDRAM Initialization (offset 5 in UPMA RAM) + * + * This is no UPM entry point. The following definition uses + * the remaining space to establish an initialization + * sequence, which is executed by a RUN command. + * + */ + 0x1FF77C35, 0xEFEABC34, 0x1FB57C35, /* last */ + + /* + * Burst Read. (Offset 8 in UPMA RAM) + */ + 0x1F07FC04, 0xEEAEFC04, 0x10ADFC04, 0xF0AFFC00, + 0xF0AFFC00, 0xF1AFFC00, 0xEFBBBC00, 0x1FF77C47, /* last */ + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + + /* + * Single Write. (Offset 18 in UPMA RAM) + */ + 0x1F27FC04, 0xEEAEBC00, 0x01B93C04, 0x1FF77C47, /* last */ + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + + /* + * Burst Write. (Offset 20 in UPMA RAM) + */ + 0x1F07FC04, 0xEEAEBC00, 0x10AD7C00, 0xF0AFFC00, + 0xF0AFFC00, 0xE1BBBC04, 0x1FF77C47, /* last */ + _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + + /* + * Refresh (Offset 30 in UPMA RAM) + */ + 0x1FF5FC84, 0xFFFFFC04, 0xFFFFFC04, 0xFFFFFC04, + 0xFFFFFC84, 0xFFFFFC07, /* last */ + _NOT_USED_, _NOT_USED_, + _NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_, + + /* + * Exception. (Offset 3c in UPMA RAM) + */ + 0x7FFFFC07, /* last */ + _NOT_USED_, _NOT_USED_, _NOT_USED_, +}; + +/* ------------------------------------------------------------------------- */ + +/* + * Check Board Identity: + */ + +int checkboard (void) +{ + volatile immap_t *immap = (immap_t *) CFG_IMMR; + volatile memctl8xx_t *memctl = &immap->im_memctl; + volatile uchar *latch; + uchar rev, mod; + + /* + * Init ChipSelect #4 (CAN + HW-Latch) + */ + memctl->memc_or4 = 0xFFFF8926; + memctl->memc_br4 = 0x90000401; + __asm__ ("eieio"); + latch = (volatile uchar *) 0x90000200; + rev = (*latch & 0xF8) >> 3; + mod = (*latch & 0x03); + printf ("Board: KUP4X Rev %d.%d\n",rev,mod); + 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 = 0; + long int size_b1 = 0; + long int size_b2 = 0; + long int size_b3 = 0; + + upmconfig (UPMA, (uint *) sdram_table, + sizeof (sdram_table) / sizeof (uint)); + /* + * Preliminary prescaler for refresh (depends on number of + * banks): This value is selected for four cycles every 62.4 us + * with two SDRAM banks or four cycles every 31.2 us with one + * bank. It will be adjusted after memory sizing. + */ + memctl->memc_mptpr = CFG_MPTPR; + + memctl->memc_mar = 0x00000088; + + /* + * Map controller banks 1 and 2 to the SDRAM banks 2 and 3 at + * preliminary addresses - these have to be modified after the + * SDRAM size has been determined. + */ +/* memctl->memc_or1 = CFG_OR1_PRELIM; */ +/* memctl->memc_br1 = CFG_BR1_PRELIM; */ + +/* memctl->memc_or2 = CFG_OR2_PRELIM; */ +/* memctl->memc_br2 = CFG_BR2_PRELIM; */ + + memctl->memc_mamr = CFG_MAMR & (~(MAMR_PTAE)); /* no refresh yet */ + + udelay (200); + + /* perform SDRAM initializsation sequence */ + + memctl->memc_mcr = 0x80002105; /* SDRAM bank 0 */ + udelay (1); + memctl->memc_mcr = 0x80002830; /* SDRAM bank 0 - execute twice */ + udelay (1); + memctl->memc_mcr = 0x80002106; /* SDRAM bank 0 - RUN MRS Pattern from loc 6 */ + udelay (1); + + memctl->memc_mcr = 0x80004105; /* SDRAM bank 1 */ + udelay (1); + memctl->memc_mcr = 0x80004830; /* SDRAM bank 1 - execute twice */ + udelay (1); + memctl->memc_mcr = 0x80004106; /* SDRAM bank 1 - RUN MRS Pattern from loc 6 */ + udelay (1); + + memctl->memc_mcr = 0x80006105; /* SDRAM bank 2 */ + udelay (1); + memctl->memc_mcr = 0x80006830; /* SDRAM bank 2 - execute twice */ + udelay (1); + memctl->memc_mcr = 0x80006106; /* SDRAM bank 2 - RUN MRS Pattern from loc 6 */ + udelay (1); + + memctl->memc_mcr = 0x8000C105; /* SDRAM bank 2 */ + udelay (1); + memctl->memc_mcr = 0x8000C830; /* SDRAM bank 2 - execute twice */ + udelay (1); + memctl->memc_mcr = 0x8000C106; /* SDRAM bank 2 - RUN MRS Pattern from loc 6 */ + udelay (1); + + memctl->memc_mamr |= MAMR_PTAE; /* enable refresh */ + udelay (1000); +#if 0 /* 4 x 8MB */ + size_b0 = 0x00800000; + size_b1 = 0x00800000; + size_b2 = 0x00800000; + size_b3 = 0x00800000; + memctl->memc_mptpr = CFG_MPTPR; + udelay (1000); + memctl->memc_or1 = 0xFF800A00; + memctl->memc_br1 = 0x00000081; + memctl->memc_or2 = 0xFF000A00; + memctl->memc_br2 = 0x00800081; + memctl->memc_or3 = 0xFE000A00; + memctl->memc_br3 = 0x01000081; + memctl->memc_or6 = 0xFE000A00; + memctl->memc_br6 = 0x01800081; +#else /* 4 x 16 MB */ + size_b0 = 0x01000000; + size_b1 = 0x01000000; + size_b2 = 0x01000000; + size_b3 = 0x01000000; + memctl->memc_mptpr = CFG_MPTPR; + udelay (1000); + memctl->memc_or1 = 0xFF000A00; + memctl->memc_br1 = 0x00000081; + memctl->memc_or2 = 0xFE000A00; + memctl->memc_br2 = 0x01000081; + memctl->memc_or3 = 0xFD000A00; + memctl->memc_br3 = 0x02000081; + memctl->memc_or6 = 0xFC000A00; + memctl->memc_br6 = 0x03000081; +#endif + udelay (10000); + + return (size_b0 + size_b1 + size_b2 + size_b3); +} + +/* ------------------------------------------------------------------------- */ + +/* + * Check memory range for valid RAM. A simple memory test determines + * the actually available RAM size between addresses `base' and + * `base + maxsize'. Some (not all) hardware errors are detected: + * - short between address lines + * - short between data lines + */ +#if 0 +static long int dram_size (long int mamr_value, long int *base, + long int maxsize) +{ + volatile immap_t *immap = (immap_t *) CFG_IMMR; + volatile memctl8xx_t *memctl = &immap->im_memctl; + volatile long int *addr; + ulong cnt, val; + ulong save[32]; /* to make test non-destructive */ + unsigned char i = 0; + + memctl->memc_mamr = mamr_value; + + for (cnt = maxsize / sizeof (long); cnt > 0; cnt >>= 1) { + addr = base + cnt; /* pointer arith! */ + + save[i++] = *addr; + *addr = ~cnt; + } + + /* write 0 to base address */ + addr = base; + save[i] = *addr; + *addr = 0; + + /* check at base address */ + if ((val = *addr) != 0) { + *addr = save[i]; + return (0); + } + + for (cnt = 1; cnt <= maxsize / sizeof (long); cnt <<= 1) { + addr = base + cnt; /* pointer arith! */ + + val = *addr; + *addr = save[--i]; + + if (val != (~cnt)) { + return (cnt * sizeof (long)); + } + } + return (maxsize); +} +#endif + +int misc_init_r (void) +{ + volatile immap_t *immap = (immap_t *) CFG_IMMR; + +#ifdef CONFIG_IDE_LED + /* Configure PA8 as output port */ + immap->im_ioport.iop_padir |= 0x80; + immap->im_ioport.iop_paodr |= 0x80; + immap->im_ioport.iop_papar &= ~0x80; + immap->im_ioport.iop_padat |= 0x80; /* turn it off */ +#endif +#ifdef KUP4X_USB + usb_init_kup4x (); +#endif + setenv ("hw", "4x"); + poweron_key (); + return (0); +} |