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-rw-r--r--board/gen860t/gen860t.c299
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diff --git a/board/gen860t/gen860t.c b/board/gen860t/gen860t.c
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+/*
+ * (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"
+
+#ifdef CONFIG_STATUS_LED
+#include <status_led.h>
+#endif
+
+#if defined(CFG_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)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ unsigned char *s;
+ unsigned char buf[64];
+ int i;
+
+ i = getenv_r("board_id", buf, sizeof(buf));
+ s = (i>0) ? buf : NULL;
+
+ if (s) {
+ printf("%s ", s);
+ } else {
+ printf("<unknown> ");
+ }
+
+ i = getenv_r("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
+ */
+long int
+initdram(int board_type)
+{
+ volatile immap_t *immr = (immap_t *)CFG_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 = CFG_MPTPR_1BK_8K;
+ memctl->memc_mamr = CFG_MAMR_8COL & (~(MAMR_PTAE)); /* no refresh yet */
+
+ /*
+ * Map CS1* to SDRAM bank
+ */
+ memctl->memc_or1 = CFG_OR1;
+ memctl->memc_br1 = CFG_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 (CONFIG_COMMANDS & CFG_CMD_DOC)
+extern void
+doc_probe(ulong physadr);
+
+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 *)CFG_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 (CONFIG_COMMANDS & CFG_CMD_MII)
+ mii_init();
+#endif
+
+#if (CONFIG_FPGA)
+ gen860t_init_fpga();
+#endif
+ return 0;
+}
+
+/*
+ * Final init hook before entering command loop.
+ */
+int
+last_stage_init(void)
+{
+ unsigned char buf[256];
+ int i;
+
+ /*
+ * Set LEDs here since status LED init code has already run
+ */
+ status_led_set(STATUS_LED_BIT1, STATUS_LED_ON);
+ status_led_set(STATUS_LED_BIT3, STATUS_LED_ON);
+
+ /*
+ * 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_r("beeper", buf, sizeof(buf));
+ if (i > 0) {
+ do_beeper(buf);
+ }
+ return 0;
+}
+/* vim: set ts=4 sw=4 tw=78 : */
generated by cgit v1.1 at 2024-11-16 16:37:55 +0000