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Diffstat (limited to 'u-boot/board/gen860t/gen860t.c')
| -rw-r--r-- | u-boot/board/gen860t/gen860t.c | 294 |
1 files changed, 294 insertions, 0 deletions
diff --git a/u-boot/board/gen860t/gen860t.c b/u-boot/board/gen860t/gen860t.c new file mode 100644 index 0000000..d175858 --- /dev/null +++ b/u-boot/board/gen860t/gen860t.c @@ -0,0 +1,294 @@ +/* + * (C) Copyright 2000 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * Keith Outwater, keith_outwater@mvis.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 <virtex2.h> +#include <common.h> +#include <mpc8xx.h> +#include <asm/8xx_immap.h> +#include "beeper.h" +#include "fpga.h" +#include "ioport.h" + +DECLARE_GLOBAL_DATA_PTR; + +#ifdef CONFIG_STATUS_LED +#include <status_led.h> +#endif + +#if defined(CONFIG_CMD_MII) && defined(CONFIG_MII) +#include <net.h> +#endif + +#if 0 +#define GEN860T_DEBUG +#endif + +#ifdef GEN860T_DEBUG +#define PRINTF(fmt,args...) printf (fmt ,##args) +#else +#define PRINTF(fmt,args...) +#endif + +/* + * The following UPM init tables were generated automatically by + * Motorola's MCUINIT program. See the README file for UPM to + * SDRAM pin assignments if you want to type this data into + * MCUINIT in order to reverse engineer the waveforms. + */ + +/* + * UPM initialization tables for MICRON MT48LC16M16A2TG SDRAM devices + * (UPMA) and Virtex FPGA SelectMap interface (UPMB). + * NOTE that unused areas of the table are used to hold NOP, precharge + * and mode register set sequences. + * + */ +#define UPMA_NOP_ADDR 0x5 +#define UPMA_PRECHARGE_ADDR 0x6 +#define UPMA_MRS_ADDR 0x12 + +#define UPM_SINGLE_READ_ADDR 0x00 +#define UPM_BURST_READ_ADDR 0x08 +#define UPM_SINGLE_WRITE_ADDR 0x18 +#define UPM_BURST_WRITE_ADDR 0x20 +#define UPM_REFRESH_ADDR 0x30 + +const uint sdram_upm_table[] = { + /* single read (offset 0x00 in upm ram) */ + 0x0e0fdc04, 0x01adfc04, 0x0fbffc00, 0x1fff5c05, + 0xffffffff, 0x0fffffcd, 0x0fff0fce, 0xefcfffff, + /* burst read (offset 0x08 in upm ram) */ + 0x0f0fdc04, 0x00fdfc04, 0xf0fffc00, 0xf0fffc00, + 0xf1fffc00, 0xfffffc00, 0xfffffc05, 0xffffffff, + 0xffffffff, 0xffffffff, 0x0ffffff4, 0x1f3d5ff4, + 0xfffffff4, 0xfffffff5, 0xffffffff, 0xffffffff, + /* single write (offset 0x18 in upm ram) */ + 0x0f0fdc04, 0x00ad3c00, 0x1fff5c05, 0xffffffff, + 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, + /* burst write (offset 0x20 in upm ram) */ + 0x0f0fdc00, 0x10fd7c00, 0xf0fffc00, 0xf0fffc00, + 0xf1fffc04, 0xfffffc05, 0xffffffff, 0xffffffff, + 0xffffffff, 0xffffffff, 0xffffffff, 0xfffff7ff, + 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, + /* refresh (offset 0x30 in upm ram) */ + 0x1ffddc84, 0xfffffc04, 0xfffffc04, 0xfffffc84, + 0xfffffc05, 0xffffffff, 0xffffffff, 0xffffffff, + 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, + /* exception (offset 0x3C in upm ram) */ +}; + +const uint selectmap_upm_table[] = { + /* single read (offset 0x00 in upm ram) */ + 0x88fffc06, 0x00fff404, 0x00fffc04, 0x33fffc00, + 0xfffffc05, 0xffffffff, 0xffffffff, 0xffffffff, + /* burst read (offset 0x08 in upm ram) */ + 0xfffffc04, 0xfffffc05, 0xffffffff, 0xffffffff, + 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, + 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, + 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, + /* single write (offset 0x18 in upm ram) */ + 0x88fffc04, 0x00fff400, 0x77fffc05, 0xffffffff, + 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, + /* burst write (offset 0x20 in upm ram) */ + 0xfffffc04, 0xfffffc05, 0xffffffff, 0xffffffff, + 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, + 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, + 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, + /* refresh (offset 0x30 in upm ram) */ + 0xfffffc04, 0xfffffc05, 0xffffffff, 0xffffffff, + 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, + 0xffffffff, 0xffffffff, 0xffffffff, 0xffffffff, + /* exception (offset 0x3C in upm ram) */ + 0xfffffc05, 0xffffffff, 0xffffffff, 0xffffffff +}; + +/* + * Check board identity. Always successful (gives information only) + */ +int checkboard (void) +{ + char *s; + char buf[64]; + int i; + + i = getenv_f("board_id", buf, sizeof (buf)); + s = (i > 0) ? buf : NULL; + + if (s) { + printf ("%s ", s); + } else { + printf ("<unknown> "); + } + + i = getenv_f("serial#", buf, sizeof (buf)); + s = (i > 0) ? buf : NULL; + + if (s) { + printf ("S/N %s\n", s); + } else { + printf ("S/N <unknown>\n"); + } + + printf ("CPU at %s MHz, ", strmhz (buf, gd->cpu_clk)); + printf ("local bus at %s MHz\n", strmhz (buf, gd->bus_clk)); + return (0); +} + +/* + * Initialize SDRAM + */ +phys_size_t initdram (int board_type) +{ + volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR; + volatile memctl8xx_t *memctl = &immr->im_memctl; + + upmconfig (UPMA, + (uint *) sdram_upm_table, + sizeof (sdram_upm_table) / sizeof (uint) + ); + + /* + * Setup MAMR register + */ + memctl->memc_mptpr = CONFIG_SYS_MPTPR_1BK_8K; + memctl->memc_mamr = CONFIG_SYS_MAMR_8COL & (~(MAMR_PTAE)); /* no refresh yet */ + + /* + * Map CS1* to SDRAM bank + */ + memctl->memc_or1 = CONFIG_SYS_OR1; + memctl->memc_br1 = CONFIG_SYS_BR1; + + /* + * Perform SDRAM initialization sequence: + * 1. Apply at least one NOP command + * 2. 100 uS delay (JEDEC standard says 200 uS) + * 3. Issue 4 precharge commands + * 4. Perform two refresh cycles + * 5. Program mode register + * + * Program SDRAM for standard operation, sequential burst, burst length + * of 4, CAS latency of 2. + */ + memctl->memc_mar = 0x00000000; + memctl->memc_mcr = MCR_UPM_A | MCR_OP_RUN | MCR_MB_CS1 | + MCR_MLCF (0) | UPMA_NOP_ADDR; + udelay (200); + memctl->memc_mar = 0x00000000; + memctl->memc_mcr = MCR_UPM_A | MCR_OP_RUN | MCR_MB_CS1 | + MCR_MLCF (4) | UPMA_PRECHARGE_ADDR; + + memctl->memc_mar = 0x00000000; + memctl->memc_mcr = MCR_UPM_A | MCR_OP_RUN | MCR_MB_CS1 | + MCR_MLCF (2) | UPM_REFRESH_ADDR; + + memctl->memc_mar = 0x00000088; + memctl->memc_mcr = MCR_UPM_A | MCR_OP_RUN | MCR_MB_CS1 | + MCR_MLCF (1) | UPMA_MRS_ADDR; + + memctl->memc_mar = 0x00000000; + memctl->memc_mcr = MCR_UPM_A | MCR_OP_RUN | MCR_MB_CS1 | + MCR_MLCF (0) | UPMA_NOP_ADDR; + /* + * Enable refresh + */ + memctl->memc_mamr |= MAMR_PTAE; + + return (SDRAM_SIZE); +} + +/* + * Disk On Chip (DOC) Millenium initialization. + * The DOC lives in the CS2* space + */ +#if defined(CONFIG_CMD_DOC) +void doc_init (void) +{ + printf ("Probing at 0x%.8x: ", DOC_BASE); + doc_probe (DOC_BASE); +} +#endif + +/* + * Miscellaneous intialization + */ +int misc_init_r (void) +{ + volatile immap_t *immr = (immap_t *) CONFIG_SYS_IMMR; + volatile memctl8xx_t *memctl = &immr->im_memctl; + + /* + * Set up UPMB to handle the Virtex FPGA SelectMap interface + */ + upmconfig (UPMB, (uint *) selectmap_upm_table, + sizeof (selectmap_upm_table) / sizeof (uint)); + + memctl->memc_mbmr = 0x0; + + config_mpc8xx_ioports (immr); + +#if defined(CONFIG_CMD_MII) + mii_init (); +#endif + +#if defined(CONFIG_FPGA) + gen860t_init_fpga (); +#endif + return 0; +} + +/* + * Final init hook before entering command loop. + */ +int last_stage_init (void) +{ +#if !defined(CONFIG_SC) + char buf[256]; + int i; + + /* + * Turn the beeper volume all the way down in case this is a warm boot. + */ + set_beeper_volume (-64); + init_beeper (); + + /* + * Read the environment to see what to do with the beeper + */ + i = getenv_f("beeper", buf, sizeof (buf)); + if (i > 0) { + do_beeper (buf); + } +#endif + return 0; +} + +/* + * Stub to make POST code happy. Can't self-poweroff, so just hang. + */ +void board_poweroff (void) +{ + puts ("### Please power off the board ###\n"); + while (1); +} |