1 files changed, 98 insertions, 0 deletions
diff --git a/arch/arm/plat-mxc/cpu_common.c b/arch/arm/plat-mxc/cpu_common.c
new file mode 100644
index 000000000000..702489fc89f3
--- /dev/null
+++ b/arch/arm/plat-mxc/cpu_common.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright 2004-2007, 2010 Freescale Semiconductor,
+ * Inc. All Rights Reserved.
+ */
+
+/*
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <asm/setup.h>
+#include <mach/common.h>
+#include <mach/hardware.h>
+
+extern int mxc_early_serial_console_init(unsigned long base, struct clk *clk);
+
+/*!
+ * @file plat-mxc/cpu_common.c
+ *
+ * @brief This file contains the common CPU initialization code.
+ *
+ * @ingroup MSL_MX31 MSL_MXC91321
+ */
+
+static int __init system_rev_setup(char *p)
+{
+	system_rev = simple_strtoul(p, NULL, 16);
+	return 0;
+}
+early_param("system_rev", system_rev_setup);
+
+int mxc_jtag_enabled;		/* OFF: 0 (default), ON: 1 */
+int uart_at_24; 			/* OFF: 0 (default); ON: 1 */
+/*
+ * Here are the JTAG options from the command line. By default JTAG
+ * is OFF which means JTAG is not connected and WFI is enabled
+ *
+ *       "on" --  JTAG is connected, so WFI is disabled
+ *       "off" -- JTAG is disconnected, so WFI is enabled
+ */
+
+static int __init jtag_wfi_setup(char *p)
+{
+	if (memcmp(p, "on", 2) == 0) {
+		mxc_jtag_enabled = 1;
+		p += 2;
+	} else if (memcmp(p, "off", 3) == 0) {
+		mxc_jtag_enabled = 0;
+		p += 3;
+	}
+	return 0;
+}
+early_param("jtag", jtag_wfi_setup);
+
+static int __init uart_parent_setup(char *p)
+{
+	if (memcmp(p, "on", 2) == 0) {
+		/* set the UART parent clock to be lp-apm */
+		uart_at_24 = 1;
+		p += 2;
+	} else if (memcmp(p, "off", 3) == 0) {
+		uart_at_24 = 0;
+		p += 3;
+	}
+	return 0;
+}
+early_param("debug_uart", uart_parent_setup);
+
+void __init mxc_cpu_common_init(void)
+{
+	pr_info("CPU is %s%x Revision %u.%u\n",
+		(mxc_cpu() < 0x100) ? "i.MX" : "MXC",
+		mxc_cpu(), mxc_cpu_rev_major(), mxc_cpu_rev_minor());
+}
+
+/**
+ * early_console_setup - setup debugging console
+ *
+ * Consoles started here require little enough setup that we can start using
+ * them very early in the boot process, either right after the machine
+ * vector initialization, or even before if the drivers can detect their hw.
+ *
+ * Returns non-zero if a console couldn't be setup.
+ * This function is developed based on
+ * early_console_setup function as defined in arch/ia64/kernel/setup.c
+ */
+void __init early_console_setup(unsigned long base, struct clk *clk)
+{
+#ifdef CONFIG_SERIAL_MXC_CONSOLE
+	mxc_early_serial_console_init(base, clk);
+#endif
+}