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Diffstat (limited to 'board/sl8245/sl8245.c')
-rw-r--r--board/sl8245/sl8245.c86
1 files changed, 86 insertions, 0 deletions
diff --git a/board/sl8245/sl8245.c b/board/sl8245/sl8245.c
new file mode 100644
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+++ b/board/sl8245/sl8245.c
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+/*
+ * (C) Copyright 2003
+ * 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 <mpc824x.h>
+
+int checkboard (void)
+{
+ ulong busfreq = get_bus_freq(0);
+ char buf[32];
+
+ printf("Board: SL8245, local bus @ %s MHz\n", strmhz(buf, busfreq));
+ return 0;
+}
+
+long int initdram (int board_type)
+{
+#ifndef CFG_RAMBOOT
+ int i, cnt;
+ volatile uchar * base= CFG_SDRAM_BASE;
+ volatile ulong * addr;
+ ulong save[32];
+ ulong val, ret = 0;
+
+ for (i=0, cnt=(CFG_MAX_RAM_SIZE / sizeof(long)) >> 1; cnt > 0; cnt >>= 1) {
+ addr = (volatile ulong *)base + cnt;
+ save[i++] = *addr;
+ *addr = ~cnt;
+ }
+
+ addr = (volatile ulong *)base;
+ save[i] = *addr;
+ *addr = 0;
+
+ if (*addr != 0) {
+ *addr = save[i];
+ goto Done;
+ }
+
+ for (cnt = 1; cnt < CFG_MAX_RAM_SIZE / sizeof(long); cnt <<= 1) {
+ addr = (volatile ulong *)base + cnt;
+ val = *addr;
+ *addr = save[--i];
+ if (val != ~cnt) {
+ ulong new_bank0_end = cnt * sizeof(long) - 1;
+ ulong mear1 = mpc824x_mpc107_getreg(MEAR1);
+ ulong emear1 = mpc824x_mpc107_getreg(EMEAR1);
+ mear1 = (mear1 & 0xFFFFFF00) |
+ ((new_bank0_end & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT);
+ emear1 = (emear1 & 0xFFFFFF00) |
+ ((new_bank0_end & MICR_ADDR_MASK) >> MICR_EADDR_SHIFT);
+ mpc824x_mpc107_setreg(MEAR1, mear1);
+ mpc824x_mpc107_setreg(EMEAR1, emear1);
+
+ ret = cnt * sizeof(long);
+ goto Done;
+ }
+ }
+
+ ret = CFG_MAX_RAM_SIZE;
+Done:
+ return ret;
+#else
+ return CFG_MAX_RAM_SIZE;
+#endif
+}