[U-Boot] [PATCH 2/5] imx: Define common routines to set cpu and board environment variables

[Eric Nelson <eric.nelson@boundarydevices.com>]

Defines two environment variables for use in producing DTB file
names, among other uses:

imx_type: defines the CPU variant through the get_imx_type() routine
board_name: environment variable equivalent of CONFIG_SYS_BOARD_NAME

Both can be over-ridden by a user. This is expected to be most useful
when transitioning to a custom board.

Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
---
 arch/arm/imx-common/cpu.c | 24 ++++++++++++++++++++++--
 1 file changed, 22 insertions(+), 2 deletions(-)

diff --git a/arch/arm/imx-common/cpu.c b/arch/arm/imx-common/cpu.c
index 0cd2538..7c434c7 100644
--- a/arch/arm/imx-common/cpu.c
+++ b/arch/arm/imx-common/cpu.c
@@ -99,8 +99,6 @@ unsigned imx_ddr_size(void)
 }
 #endif
 
-#if defined(CONFIG_DISPLAY_CPUINFO)
-
 const char *get_imx_type(u32 imxtype)
 {
 	switch (imxtype) {
@@ -121,6 +119,28 @@ const char *get_imx_type(u32 imxtype)
 	}
 }
 
+#ifdef CONFIG_ARCH_MISC_INIT
+void __weak set_imx_type(void)
+{
+	setenv("imx_type", get_imx_type(cpu_type(get_cpu_rev())));
+}
+
+void __weak set_board_name(void)
+{
+	char *old = getenv("board_name");
+	if (!old)
+		setenv("board_name", CONFIG_SYS_BOARD);
+}
+
+int arch_misc_init(void)
+{
+	set_imx_type();
+	set_board_name();
+	return 0;
+}
+#endif
+
+#if defined(CONFIG_DISPLAY_CPUINFO)
 int print_cpuinfo(void)
 {
 	u32 cpurev;
-- 
1.8.1.2