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Diffstat (limited to 'arch/powerpc/cpu/mpc8220/cpu.c')
-rw-r--r--arch/powerpc/cpu/mpc8220/cpu.c104
1 files changed, 104 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc8220/cpu.c b/arch/powerpc/cpu/mpc8220/cpu.c
new file mode 100644
index 000000000..563cfe053
--- /dev/null
+++ b/arch/powerpc/cpu/mpc8220/cpu.c
@@ -0,0 +1,104 @@
+/*
+ * (C) Copyright 2000-2003
+ * 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
+ */
+
+/*
+ * CPU specific code for the MPC8220 CPUs
+ */
+
+#include <common.h>
+#include <watchdog.h>
+#include <command.h>
+#include <mpc8220.h>
+#include <netdev.h>
+#include <asm/processor.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int checkcpu (void)
+{
+ ulong clock = gd->cpu_clk;
+ char buf[32];
+
+ puts ("CPU: ");
+
+ printf (CPU_ID_STR);
+
+ printf (" (JTAG ID %08lx)", *(vu_long *) (CONFIG_SYS_MBAR + 0x50));
+
+ printf (" at %s MHz\n", strmhz (buf, clock));
+
+ return 0;
+}
+
+/* ------------------------------------------------------------------------- */
+
+int do_reset (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+ volatile gptmr8220_t *gptmr = (volatile gptmr8220_t *) MMAP_GPTMR;
+ ulong msr;
+
+ /* Interrupts and MMU off */
+ __asm__ __volatile__ ("mfmsr %0":"=r" (msr):);
+
+ msr &= ~(MSR_ME | MSR_EE | MSR_IR | MSR_DR);
+ __asm__ __volatile__ ("mtmsr %0"::"r" (msr));
+
+ /* Charge the watchdog timer */
+ gptmr->Prescl = 10;
+ gptmr->Count = 1;
+
+ gptmr->Mode = GPT_TMS_SGPIO;
+
+ gptmr->Control = GPT_CTRL_WDEN | GPT_CTRL_CE;
+
+ return 1;
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Get timebase clock frequency (like cpu_clk in Hz)
+ *
+ */
+unsigned long get_tbclk (void)
+{
+ ulong tbclk;
+
+ tbclk = (gd->bus_clk + 3L) / 4L;
+
+ return (tbclk);
+}
+
+/* ------------------------------------------------------------------------- */
+
+/*
+ * Initializes on-chip ethernet controllers.
+ * to override, implement board_eth_init()
+ */
+int cpu_eth_init(bd_t *bis)
+{
+#if defined(CONFIG_MPC8220_FEC)
+ mpc8220_fec_initialize(bis);
+#endif
+ return 0;
+}