Merge with http://www.jdl.com/software/u-boot-86xx.git

1 files changed, 117 insertions, 0 deletions

diff --git a/cpu/mpc86xx/cpu_init.c b/cpu/mpc86xx/cpu_init.c
new file mode 100644
index 0000000..4673d05
--- /dev/null
+++ b/cpu/mpc86xx/cpu_init.c
@@ -0,0 +1,117 @@
+/*
+ * Copyright 2004 Freescale Semiconductor.
+ * Jeff Brown
+ * Srikanth Srinivasan (srikanth.srinivasan@freescale.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
+ */
+
+/*
+ * cpu_init.c - low level cpu init
+ */
+
+#include <common.h>
+#include <mpc86xx.h>
+
+/*
+ * Breathe some life into the CPU...
+ *
+ * Set up the memory map
+ * initialize a bunch of registers
+ */
+
+void cpu_init_f(void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+	volatile immap_t    *immap = (immap_t *)CFG_IMMR;
+	volatile ccsr_lbc_t *memctl = &immap->im_lbc;
+
+	/* Pointer is writable since we allocated a register for it */
+	gd = (gd_t *) (CFG_INIT_RAM_ADDR + CFG_GBL_DATA_OFFSET);
+
+	/* Clear initial global data */
+	memset ((void *) gd, 0, sizeof (gd_t));
+
+	/* Map banks 0 and 1 to the FLASH banks 0 and 1 at preliminary
+	 * addresses - these have to be modified later when FLASH size
+	 * has been determined
+	 */
+
+#if defined(CFG_OR0_REMAP)
+	memctl->or0 = CFG_OR0_REMAP;
+#endif
+#if defined(CFG_OR1_REMAP)
+	memctl->or1 = CFG_OR1_REMAP;
+#endif
+
+	/* now restrict to preliminary range */
+#if defined(CFG_BR0_PRELIM) && defined(CFG_OR0_PRELIM)
+	memctl->br0 = CFG_BR0_PRELIM;
+	memctl->or0 = CFG_OR0_PRELIM;
+#endif
+
+#if defined(CFG_BR1_PRELIM) && defined(CFG_OR1_PRELIM)
+	memctl->or1 = CFG_OR1_PRELIM;
+	memctl->br1 = CFG_BR1_PRELIM;
+#endif
+
+#if defined(CFG_BR2_PRELIM) && defined(CFG_OR2_PRELIM)
+	memctl->or2 = CFG_OR2_PRELIM;
+	memctl->br2 = CFG_BR2_PRELIM;
+#endif
+
+#if defined(CFG_BR3_PRELIM) && defined(CFG_OR3_PRELIM)
+	memctl->or3 = CFG_OR3_PRELIM;
+	memctl->br3 = CFG_BR3_PRELIM;
+#endif
+
+#if defined(CFG_BR4_PRELIM) && defined(CFG_OR4_PRELIM)
+	memctl->or4 = CFG_OR4_PRELIM;
+	memctl->br4 = CFG_BR4_PRELIM;
+#endif
+
+#if defined(CFG_BR5_PRELIM) && defined(CFG_OR5_PRELIM)
+	memctl->or5 = CFG_OR5_PRELIM;
+	memctl->br5 = CFG_BR5_PRELIM;
+#endif
+
+#if defined(CFG_BR6_PRELIM) && defined(CFG_OR6_PRELIM)
+	memctl->or6 = CFG_OR6_PRELIM;
+	memctl->br6 = CFG_BR6_PRELIM;
+#endif
+
+#if defined(CFG_BR7_PRELIM) && defined(CFG_OR7_PRELIM)
+	memctl->or7 = CFG_OR7_PRELIM;
+	memctl->br7 = CFG_BR7_PRELIM;
+#endif
+
+	/* enable the timebase bit in HID0 */
+	set_hid0(get_hid0() | 0x4000000);
+
+	/* enable SYNCBE | ABE bits in  HID1 */
+	set_hid1(get_hid1() | 0x00000C00);
+}
+
+/*
+ * initialize higher level parts of CPU like timers
+ */
+int cpu_init_r(void)
+{
+	return 0;
+}