1 files changed, 87 insertions, 0 deletions
diff --git a/arch/arm/mach-keystone/keystone.c b/arch/arm/mach-keystone/keystone.c
new file mode 100644
index 0000000000..11a9357db4
--- /dev/null
+++ b/arch/arm/mach-keystone/keystone.c
@@ -0,0 +1,87 @@
+/*
+ * Keystone EVM : Board initialization
+ *
+ * (C) Copyright 2014
+ *     Texas Instruments Incorporated, <www.ti.com>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/mon.h>
+#include <asm/arch/psc_defs.h>
+#include <asm/arch/hardware.h>
+#include <asm/arch/hardware.h>
+
+/**
+ * cpu_to_bus - swap bytes of the 32-bit data if the device is BE
+ * @ptr - array of data
+ * @length - lenght of data array
+ */
+int cpu_to_bus(u32 *ptr, u32 length)
+{
+	u32 i;
+
+	if (!(readl(KS2_DEVSTAT) & 0x1))
+		for (i = 0; i < length; i++, ptr++)
+			*ptr = cpu_to_be32(*ptr);
+
+	return 0;
+}
+
+static int turn_off_myself(void)
+{
+	printf("Turning off ourselves\r\n");
+	mon_power_off(0);
+
+	psc_disable_module(KS2_LPSC_TETRIS);
+	psc_disable_domain(KS2_TETRIS_PWR_DOMAIN);
+
+	asm volatile ("isb\n"
+		      "dsb\n"
+		      "wfi\n");
+
+	printf("What! Should not see that\n");
+	return 0;
+}
+
+static void turn_off_all_dsps(int num_dsps)
+{
+	int i;
+
+	for (i = 0; i < num_dsps; i++) {
+		if (psc_disable_module(i + KS2_LPSC_GEM_0))
+			printf("Cannot disable module for #%d DSP", i);
+
+		if (psc_disable_domain(i + 8))
+			printf("Cannot disable domain for #%d DSP", i);
+	}
+}
+
+int do_killme_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	return turn_off_myself();
+}
+
+U_BOOT_CMD(
+	killme, 1,      0,      do_killme_cmd,
+	"turn off main ARM core",
+	"turn off main ARM core. Should not live after that :(\n"
+);
+
+int misc_init_r(void)
+{
+	char *env;
+	long ks2_debug = 0;
+
+	env = getenv("ks2_debug");
+
+	if (env)
+		ks2_debug = simple_strtol(env, NULL, 0);
+
+	if ((ks2_debug & DBG_LEAVE_DSPS_ON) == 0)
+		turn_off_all_dsps(KS2_NUM_DSPS);
+
+	return 0;
+}