1 files changed, 73 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/arch/avr32/cpu/cpu.c b/qemu/roms/u-boot/arch/avr32/cpu/cpu.c
new file mode 100644
index 000000000..cef630ed4
--- /dev/null
+++ b/qemu/roms/u-boot/arch/avr32/cpu/cpu.c
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2005-2006 Atmel Corporation
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+#include <command.h>
+
+#include <asm/io.h>
+#include <asm/sections.h>
+#include <asm/sysreg.h>
+
+#include <asm/arch/clk.h>
+#include <asm/arch/hardware.h>
+
+#include "hsmc3.h"
+
+/* Sanity checks */
+#if (CONFIG_SYS_CLKDIV_CPU > CONFIG_SYS_CLKDIV_HSB)		\
+	|| (CONFIG_SYS_CLKDIV_HSB > CONFIG_SYS_CLKDIV_PBA)	\
+	|| (CONFIG_SYS_CLKDIV_HSB > CONFIG_SYS_CLKDIV_PBB)
+# error Constraint fCPU >= fHSB >= fPB{A,B} violated
+#endif
+#if defined(CONFIG_PLL) && ((CONFIG_SYS_PLL0_MUL < 1) || (CONFIG_SYS_PLL0_DIV < 1))
+# error Invalid PLL multiplier and/or divider
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int cpu_init(void)
+{
+	extern void _evba(void);
+
+	gd->arch.cpu_hz = CONFIG_SYS_OSC0_HZ;
+
+	/* TODO: Move somewhere else, but needs to be run before we
+	 * increase the clock frequency. */
+	hsmc3_writel(MODE0, 0x00031103);
+	hsmc3_writel(CYCLE0, 0x000c000d);
+	hsmc3_writel(PULSE0, 0x0b0a0906);
+	hsmc3_writel(SETUP0, 0x00010002);
+
+	clk_init();
+
+	/* Update the CPU speed according to the PLL configuration */
+	gd->arch.cpu_hz = get_cpu_clk_rate();
+
+	/* Set up the exception handler table and enable exceptions */
+	sysreg_write(EVBA, (unsigned long)&_evba);
+	asm volatile("csrf	%0" : : "i"(SYSREG_EM_OFFSET));
+
+	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 * const 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;
+}