rockchip: hotkey: add fdt dump

Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Change-Id: I9bb158f13b723decae01069f4324289c599e0e5f

arch/arm/include/asm/arch-rockchip/hotkey.h

@@ -13,6 +13,7 @@ enum hotkey_t {
 	HK_CLI_OS_GO,
 	HK_CMDLINE,
 	HK_FASTBOOT,
+	HK_FDT,
 	HK_INITCALL,
 	HK_REGULATOR,
 	HK_ROCKUSB_DNL,

arch/arm/mach-rockchip/board.c

@@ -450,6 +450,8 @@ int init_kernel_dtb(void)
 	ufdt_blob = (void *)gd->fdt_blob;
 	gd->fdt_blob = (void *)fdt_addr;
 
+	hotkey_run(HK_FDT);
+
 	/*
 	 * There is a phandle miss match between U-Boot and kernel dtb node,
 	 * we fixup it in U-Boot live dt nodes.

arch/arm/mach-rockchip/hotkey.c

@@ -21,6 +21,7 @@ DECLARE_GLOBAL_DATA_PTR;
 #define CTRL_P		0x10	/* parameter(cmdline) dump */
 #define CTRL_R		0x12	/* regulator initial state dump */
 #define CTRL_S		0x13	/* shell(cli) on BOOTM_STATE_OS_GO */
+#define CTRL_T		0x14	/* print fdt */
 
 bool is_hotkey(enum hotkey_t id)
 {
@@ -66,6 +67,10 @@ void hotkey_run(enum hotkey_t id)
 		if (gd->console_evt == CTRL_I)
 			env_update("bootargs", "initcall_debug debug");
 		break;
+	case HK_FDT:
+		if (gd->console_evt == CTRL_T)
+			run_command("fdt print", 0);
+		break;
 #if defined(CONFIG_CONSOLE_DISABLE_CTRLC) && \
     defined(CONFIG_BOOTDELAY) && (CONFIG_BOOTDELAY <= 0)
 	case HK_CLI_OS_PRE: