Initial revision

1 files changed, 247 insertions, 0 deletions

diff --git a/board/eltec/bab7xx/bab7xx.c b/board/eltec/bab7xx/bab7xx.c
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+++ b/board/eltec/bab7xx/bab7xx.c
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+/*
+ * (C) Copyright 2001 Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Andreas Heppel <aheppel@sysgo.de>
+ * (C) Copyright 2001 ELTEC Elektronik AG
+ * Frank Gottschling <fgottschling@eltec.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 <command.h>
+#include <mpc106.h>
+#include <mk48t59.h>
+#include <74xx_7xx.h>
+#include <ns87308.h>
+#include <video_fb.h>
+
+/*---------------------------------------------------------------------------*/
+/*
+ * Get Bus clock frequency
+ */
+ulong bab7xx_get_bus_freq (void)
+{
+    /*
+     * The GPIO Port 1 on BAB7xx reflects the bus speed.
+     */
+    volatile struct GPIO *gpio = (struct GPIO *)(CFG_ISA_IO + CFG_NS87308_GPIO_BASE);
+
+    unsigned char data = gpio->dta1;
+
+    if (data & 0x02)
+        return 66666666;
+
+    return 83333333;
+}
+
+/*---------------------------------------------------------------------------*/
+
+/*
+ * Measure CPU clock speed (core clock GCLK1) (Approx. GCLK frequency in Hz)
+ */
+ulong bab7xx_get_gclk_freq (void)
+{
+    static const int pllratio_to_factor[] = {
+        00, 75, 70, 00, 20, 65, 100, 45, 30, 55, 40, 50, 80, 60, 35, 00,
+    };
+
+    return pllratio_to_factor[get_hid1 () >> 28] * (bab7xx_get_bus_freq() / 10);
+}
+
+/*----------------------------------------------------------------------------*/
+
+int checkcpu (void)
+{
+    uint pvr  = get_pvr();
+
+    printf ("MPC7xx V%d.%d",(pvr >> 8) & 0xFF, pvr & 0xFF);
+    printf (" at %ld / %ld MHz\n",  bab7xx_get_gclk_freq()/1000000,
+            bab7xx_get_bus_freq()/1000000);
+
+    return (0);
+}
+
+/* ------------------------------------------------------------------------- */
+
+int checkboard (void)
+{
+#ifdef CFG_ADDRESS_MAP_A
+    puts ("Board: ELTEC BAB7xx PReP\n");
+#else
+    puts ("Board: ELTEC BAB7xx CHRP\n");
+#endif
+    return (0);
+}
+
+/* ------------------------------------------------------------------------- */
+
+int checkflash (void)
+{
+    /* TODO: XXX XXX XXX */
+    printf ("2 MB ## Test not implemented yet ##\n");
+    return (0);
+}
+
+/* ------------------------------------------------------------------------- */
+
+
+static unsigned int mpc106_read_cfg_dword (unsigned int reg)
+{
+    unsigned int reg_addr = MPC106_REG | (reg & 0xFFFFFFFC);
+
+    out32r(MPC106_REG_ADDR, reg_addr);
+
+    return (in32r(MPC106_REG_DATA | (reg & 0x3)));
+}
+
+/* ------------------------------------------------------------------------- */
+
+long int dram_size (int board_type)
+{
+    /* No actual initialisation to do - done when setting up
+     * PICRs MCCRs ME/SARs etc in ram_init.S.
+     */
+
+    register unsigned long i, msar1, mear1, memSize;
+
+#if defined(CFG_MEMTEST)
+    register unsigned long reg;
+
+    printf("Testing DRAM\n");
+
+    /* write each mem addr with it's address */
+    for (reg = CFG_MEMTEST_START; reg < CFG_MEMTEST_END; reg+=4)
+    *reg = reg;
+
+    for (reg = CFG_MEMTEST_START; reg < CFG_MEMTEST_END; reg+=4)
+    {
+        if (*reg != reg)
+            return -1;
+    }
+#endif
+
+    /*
+    * Since MPC106 memory controller chip has already been set to
+    * control all memory, just read and interpret its memory boundery register.
+    */
+    memSize = 0;
+    msar1 = mpc106_read_cfg_dword(MPC106_MSAR1);
+    mear1 = mpc106_read_cfg_dword(MPC106_MEAR1);
+    i     = mpc106_read_cfg_dword(MPC106_MBER) & 0xf;
+
+    do
+    {
+        if (i & 0x01)   /* is bank enabled ? */
+            memSize += (mear1 & 0xff) - (msar1 & 0xff) + 1;
+        msar1 >>= 8;
+        mear1 >>= 8;
+        i     >>= 1;
+    } while (i);
+
+    return (memSize * 0x100000);
+}
+
+/* ------------------------------------------------------------------------- */
+
+long int initdram(int board_type)
+{
+    return dram_size(board_type);
+}
+
+/* ------------------------------------------------------------------------- */
+
+void after_reloc (ulong dest_addr)
+{
+    DECLARE_GLOBAL_DATA_PTR;
+
+    /*
+     * Jump to the main U-Boot board init code
+     */
+    board_init_r(gd, dest_addr);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * do_reset is done here because in this case it is board specific, since the
+ * 7xx CPUs can only be reset by external HW (the RTC in this case).
+ */
+void
+do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
+{
+#if defined(CONFIG_RTC_MK48T59)
+    /* trigger watchdog immediately */
+    rtc_set_watchdog(1, RTC_WD_RB_16TH);
+#else
+    #error "You must define the macro CONFIG_RTC_MK48T59."
+#endif
+}
+
+/* ------------------------------------------------------------------------- */
+
+#if defined(CONFIG_WATCHDOG)
+/*
+ * Since the 7xx CPUs don't have an internal watchdog, this function is
+ * board specific.  We use the RTC here.
+ */
+void watchdog_reset(void)
+{
+#if defined(CONFIG_RTC_MK48T59)
+    /* we use a 32 sec watchdog timer */
+    rtc_set_watchdog(8, RTC_WD_RB_4);
+#else
+    #error "You must define the macro CONFIG_RTC_MK48T59."
+#endif
+}
+#endif    /* CONFIG_WATCHDOG */
+
+/* ------------------------------------------------------------------------- */
+
+#ifdef CONFIG_CONSOLE_EXTRA_INFO
+extern GraphicDevice smi;
+
+void video_get_info_str (int line_number, char *info)
+{
+    /* init video info strings for graphic console */
+    switch (line_number)
+    {
+    case 1:
+        sprintf (info," MPC7xx V%d.%d at %ld / %ld MHz",
+            (get_pvr() >> 8) & 0xFF,
+            get_pvr() & 0xFF,
+            bab7xx_get_gclk_freq()/1000000,
+            bab7xx_get_bus_freq()/1000000);
+        return;
+    case 2:
+        sprintf (info, " ELTEC BAB7xx with %ld MB DRAM and %ld MB FLASH",
+            dram_size(0)/0x100000,
+            flash_init()/0x100000);
+        return;
+    case 3:
+        sprintf (info, " %s", smi.modeIdent);
+        return;
+    }
+
+    /* no more info lines */
+    *info = 0;
+    return;
+}
+#endif
+
+/*---------------------------------------------------------------------------*/