1 files changed, 131 insertions, 0 deletions
diff --git a/arch/arm/mach-keystone/cmd_mon.c b/arch/arm/mach-keystone/cmd_mon.c
new file mode 100644
index 0000000000..f9f58a37df
--- /dev/null
+++ b/arch/arm/mach-keystone/cmd_mon.c
@@ -0,0 +1,131 @@
+/*
+ * K2HK: secure kernel command file
+ *
+ * (C) Copyright 2012-2014
+ *     Texas Instruments Incorporated, <www.ti.com>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+asm(".arch_extension sec\n\t");
+
+static int mon_install(u32 addr, u32 dpsc, u32 freq)
+{
+	int result;
+
+	__asm__ __volatile__ (
+		"stmfd r13!, {lr}\n"
+		"mov r0, %1\n"
+		"mov r1, %2\n"
+		"mov r2, %3\n"
+		"blx r0\n"
+		"ldmfd r13!, {lr}\n"
+		: "=&r" (result)
+		: "r" (addr), "r" (dpsc), "r" (freq)
+		: "cc", "r0", "r1", "r2", "memory");
+	return result;
+}
+
+static int do_mon_install(cmd_tbl_t *cmdtp, int flag, int argc,
+			  char * const argv[])
+{
+	u32 addr, dpsc_base = 0x1E80000, freq;
+	int     rcode = 0;
+
+	if (argc < 2)
+		return CMD_RET_USAGE;
+
+	freq = clk_get_rate(sys_clk0_6_clk);
+
+	addr = simple_strtoul(argv[1], NULL, 16);
+
+	rcode = mon_install(addr, dpsc_base, freq);
+	printf("## installed monitor, freq [%d], status %d\n",
+	       freq, rcode);
+
+	return 0;
+}
+
+U_BOOT_CMD(mon_install, 2, 0, do_mon_install,
+	   "Install boot kernel at 'addr'",
+	   ""
+);
+
+static void core_spin(void)
+{
+	while (1)
+		; /* forever */;
+}
+
+int mon_power_on(int core_id, void *ep)
+{
+	int result;
+
+	asm volatile (
+		"stmfd  r13!, {lr}\n"
+		"mov r1, %1\n"
+		"mov r2, %2\n"
+		"mov r0, #0\n"
+		"smc	#0\n"
+		"ldmfd  r13!, {lr}\n"
+		: "=&r" (result)
+		: "r" (core_id), "r" (ep)
+		: "cc", "r0", "r1", "r2", "memory");
+	return  result;
+}
+
+int mon_power_off(int core_id)
+{
+	int result;
+
+	asm volatile (
+		"stmfd  r13!, {lr}\n"
+		"mov r1, %1\n"
+		"mov r0, #1\n"
+		"smc	#1\n"
+		"ldmfd  r13!, {lr}\n"
+		: "=&r" (result)
+		: "r" (core_id)
+		: "cc", "r0", "r1", "memory");
+	return  result;
+}
+
+int do_mon_power(cmd_tbl_t *cmdtp, int flag, int argc,
+			char * const argv[])
+{
+	int     rcode = 0, core_id, on;
+	void (*fn)(void);
+
+	fn = core_spin;
+
+	if (argc < 3)
+		return CMD_RET_USAGE;
+
+	core_id = simple_strtoul(argv[1], NULL, 16);
+	on = simple_strtoul(argv[2], NULL, 16);
+
+	if (on)
+		rcode = mon_power_on(core_id, fn);
+	else
+		rcode = mon_power_off(core_id);
+
+	if (on) {
+		if (!rcode)
+			printf("core %d powered on successfully\n", core_id);
+		else
+			printf("core %d power on failure\n", core_id);
+	} else {
+		printf("core %d powered off successfully\n", core_id);
+	}
+
+	return 0;
+}
+
+U_BOOT_CMD(mon_power, 3, 0, do_mon_power,
+	   "Power On/Off secondary core",
+	   "mon_power <coreid> <oper>\n"
+	   "- coreid (1-3) and oper (1 - ON, 0 - OFF)\n"
+	   ""
+);