Merge with /home/wd/git/u-boot/mailing-list/Haavard_Skinnemoen

1 files changed, 83 insertions, 0 deletions

diff --git a/cpu/at32ap/cpu.c b/cpu/at32ap/cpu.c
new file mode 100644
index 0000000..37e3ea0
--- /dev/null
+++ b/cpu/at32ap/cpu.c
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2005-2006 Atmel Corporation
+ *
+ * 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 <asm/io.h>
+#include <asm/sections.h>
+#include <asm/sysreg.h>
+
+#include <asm/arch/memory-map.h>
+#include <asm/arch/platform.h>
+
+#include "hsmc3.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int cpu_init(void)
+{
+	const struct device *hebi;
+	extern void _evba(void);
+	char *p;
+
+	gd->cpu_hz = CFG_OSC0_HZ;
+
+	/* fff03400: 00010001 04030402 00050005 10011103 */
+	hebi = get_device(DEVICE_HEBI);
+	hsmc3_writel(hebi, MODE0, 0x00031103);
+	hsmc3_writel(hebi, CYCLE0, 0x000c000d);
+	hsmc3_writel(hebi, PULSE0, 0x0b0a0906);
+	hsmc3_writel(hebi, SETUP0, 0x00010002);
+
+	pm_init();
+
+	sysreg_write(EVBA, (unsigned long)&_evba);
+	asm volatile("csrf	%0" : : "i"(SYSREG_EM_OFFSET));
+	gd->console_uart = get_device(CFG_CONSOLE_UART_DEV);
+
+	/* Lock everything that mess with the flash in the icache */
+	for (p = __flashprog_start; p <= (__flashprog_end + CFG_ICACHE_LINESZ);
+	     p += CFG_ICACHE_LINESZ)
+		asm volatile("cache %0, 0x02" : "=m"(*p) :: "memory");
+
+	return 0;
+}
+
+void prepare_to_boot(void)
+{
+	/* Flush both caches and the write buffer */
+	asm volatile("cache  %0[4], 010\n\t"
+		     "cache  %0[0], 000\n\t"
+		     "sync   0" : : "r"(0) : "memory");
+}
+
+int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	/* This will reset the CPU core, caches, MMU and all internal busses */
+	__builtin_mtdr(8, 1 << 13);	/* set DC:DBE */
+	__builtin_mtdr(8, 1 << 30);	/* set DC:RES */
+
+	/* Flush the pipeline before we declare it a failure */
+	asm volatile("sub   pc, pc, -4");
+
+	return -1;
+}