ENGR00315894-56 CMD: Add new command "bootaux" to boot auxiliary core

To boot a auxiliary core in asymmetric multicore system, introduce the
new command "bootaux" to do it.

Example of boot auxliary core from 0x70000000 where stores the boot head
information that should be parsed by each core.
"bootaux 0x70000000"

Signed-off-by: Ye.Li <B37916@freescale.com>
(cherry picked from commit fd00c322d058e02953a336517547174edaf2c573)
Signed-off-by: Peng Fan <Peng.Fan@freescale.com>

2 files changed, 43 insertions, 0 deletions

diff --git a/common/Makefile b/common/Makefile
index 252fbf1..ac7edba 100644
--- a/common/Makefile
+++ b/common/Makefile
@@ -209,6 +209,7 @@ obj-$(CONFIG_UPDATE_TFTP) += update.o
 obj-$(CONFIG_USB_KEYBOARD) += usb_kbd.o
 obj-$(CONFIG_CMD_DFU) += cmd_dfu.o
 obj-$(CONFIG_CMD_GPT) += cmd_gpt.o
+obj-$(CONFIG_CMD_BOOTAUX) += cmd_bootaux.o
 endif
 
 ifdef CONFIG_SPL_BUILD
diff --git a/common/cmd_bootaux.c b/common/cmd_bootaux.c
new file mode 100644
index 0000000..188cb73
--- /dev/null
+++ b/common/cmd_bootaux.c
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <command.h>
+
+/* Allow for arch specific config before we boot */
+static int __arch_auxiliary_core_up(u32 core_id, u32 boot_private_data)
+{
+	/* please define platform specific arch_auxiliary_core_up() */
+	return CMD_RET_FAILURE;
+}
+int arch_auxiliary_core_up(u32 core_id, u32 boot_private_data)
+	__attribute__((weak, alias("__arch_auxiliary_core_up")));
+
+int do_bootaux(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+	ulong addr;
+	int ret;
+
+	if (argc < 2)
+		return CMD_RET_USAGE;
+
+	addr = simple_strtoul(argv[1], NULL, 16);
+
+	printf("## Starting auxiliary core at 0x%08lX ...\n", addr);
+
+	ret = arch_auxiliary_core_up(0, addr);
+	if (ret)
+		return CMD_RET_FAILURE;
+
+	return CMD_RET_SUCCESS;
+}
+
+U_BOOT_CMD(
+	bootaux, CONFIG_SYS_MAXARGS, 1,	do_bootaux,
+	"Start auxiliary core",
+	""
+);