1 files changed, 151 insertions, 0 deletions
diff --git a/cpu/mpc85xx/cpu.c b/cpu/mpc85xx/cpu.c
new file mode 100644
index 000000000..64f27820a
--- /dev/null
+++ b/cpu/mpc85xx/cpu.c
@@ -0,0 +1,151 @@
+/*
+ * (C) Copyright 2002, 2003 Motorola Inc.
+ * Xianghua Xiao (X.Xiao@motorola.com)
+ *
+ * (C) Copyright 2000
+ * 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 <watchdog.h>
+#include <command.h>
+#include <asm/cache.h>
+
+/* ------------------------------------------------------------------------- */
+
+int checkcpu (void)
+{
+	uint pir = get_pir();
+	uint pvr = get_pvr();
+
+	printf("Motorola PowerPC ProcessorID=%08x Rev. ",pir);
+	switch(pvr) {
+	default:
+		printf("PVR=%08x", pvr);
+		break;
+	}
+
+	printf("\n");
+
+	return 0;
+}
+
+
+/* ------------------------------------------------------------------------- */
+
+int do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
+{
+	/*
+	 * Initiate hard reset in debug control register DBCR0
+	 * Make sure MSR[DE] = 1
+	 */
+	__asm__ __volatile__("lis   3, 0x7000" ::: "r3");
+	mtspr(DBCR0,3);
+	return 1;
+}
+
+
+/*
+ * Get timebase clock frequency
+ */
+unsigned long get_tbclk (void)
+{
+
+	sys_info_t  sys_info;
+
+	get_sys_info(&sys_info);
+	return ((sys_info.freqSystemBus + 3L) / 4L);
+}
+
+
+#if defined(CONFIG_WATCHDOG)
+void
+watchdog_reset(void)
+{
+	int re_enable = disable_interrupts();
+	reset_85xx_watchdog();
+	if (re_enable) enable_interrupts();
+}
+
+void
+reset_85xx_watchdog(void)
+{
+	/*
+	 * Clear TSR(WIS) bit by writing 1
+	 */
+	unsigned long val;
+	val = mfspr(tsr);
+	val |= 0x40000000;
+	mtspr(tsr, val);
+}
+#endif	/* CONFIG_WATCHDOG */
+
+#if defined(CONFIG_DDR_ECC)
+__inline__ void dcbz(const void* addr)
+{
+	__asm__ __volatile__ ("dcbz 0,%0" :: "r" (addr));
+}
+
+__inline__ void dcbf(const void* addr)
+{
+	__asm__ __volatile__ ("dcbf 0,%0" :: "r" (addr));
+}
+
+void dma_init(void) {
+	volatile immap_t *immap = (immap_t *)CFG_IMMR;
+	volatile ccsr_dma_t *dma = &immap->im_dma;
+
+	dma->satr0 = 0x02c40000;
+	dma->datr0 = 0x02c40000;
+	asm("sync; isync; msync");
+	return;
+}
+
+uint dma_check(void) {
+	volatile immap_t *immap = (immap_t *)CFG_IMMR;
+	volatile ccsr_dma_t *dma = &immap->im_dma;
+	volatile uint status = dma->sr0;
+
+	/* While the channel is busy, spin */
+	while((status & 4) == 4) {
+		status = dma->sr0;
+	}
+
+	if (status != 0) {
+		printf ("DMA Error: status = %x\n", status);
+	}
+	return status;
+}
+
+int dma_xfer(void *dest, uint count, void *src) {
+	volatile immap_t *immap = (immap_t *)CFG_IMMR;
+	volatile ccsr_dma_t *dma = &immap->im_dma;
+
+	dma->dar0 = (uint) dest;
+	dma->sar0 = (uint) src;
+	dma->bcr0 = count;
+	dma->mr0 = 0xf000004;
+	asm("sync;isync;msync");
+	dma->mr0 = 0xf000005;
+	asm("sync;isync;msync");
+	return dma_check();
+}
+#endif