[PATCH v3] arm: xea: Modify board code to generate single binary u-boot

[Lukasz Majewski]

This change provides the possibility to build XEA (imx287 based) board
U-Boot as a single binary (without support for CONFIG_SPL_FRAMEWORK).

The generated u-boot.sb can be used in the factory environment to for
example perform initial setup or HW testing.

It can be used with 'uuu' utility
(SDPS: boot -f /srv/tftp/xea/u-boot.sb)

In the configs/imx28_xea_defconfig one needs to disable following configs:
# CONFIG_SPL_BLK is not set
# CONFIG_SPL_FRAMEWORK is not set

The board_init_ll() is used in arch/arm/cpu/arm926ejs/mxs/start.S, which
is utilized when CONFIG_SPL_FRAMEWORK is disabled.

However, when it is enabled - the arch/arm/cpu/arm926ejs/start.S is used,
which requires the lowlevel_init() function.

Signed-off-by: Lukasz Majewski <lukma at denx.de>

---

Changes in v3:
- Use just #ifdef for CONFIG_SPL_BUILD and CONFIG_SPL_FRAMEWORK as those
  two are some kind of a special defines for low level code

Changes in v2:
- Use CONFIG_IS_ENABLED(FRAMEWORK) instead of #ifdef CONFIG_SPL_FRAMEWORK
  (previous version used CONFIG_IS_ENABLED(SPL_FRAMEWORK), which was
   wrong).
- Restructure spl_xea.c code to be more readable

 board/liebherr/xea/spl_xea.c | 7 +++++++
 board/liebherr/xea/xea.c     | 2 +-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/board/liebherr/xea/spl_xea.c b/board/liebherr/xea/spl_xea.c
index 192f68fca5..df354cac64 100644
--- a/board/liebherr/xea/spl_xea.c
+++ b/board/liebherr/xea/spl_xea.c
@@ -290,6 +290,12 @@ u32 mxs_dram_vals[] = {
 	0x00000000, 0xffffffff
 };
 
+#ifndef CONFIG_SPL_FRAMEWORK
+void board_init_ll(const u32 arg, const uint32_t *resptr)
+{
+	mxs_common_spl_init(arg, resptr, iomux_setup, ARRAY_SIZE(iomux_setup));
+}
+#else
 void lowlevel_init(void)
 {
 	struct mxs_pinctrl_regs *pinctrl_regs =
@@ -301,3 +307,4 @@ void lowlevel_init(void)
 
 	mxs_common_spl_init(0, NULL, iomux_setup, ARRAY_SIZE(iomux_setup));
 }
+#endif
diff --git a/board/liebherr/xea/xea.c b/board/liebherr/xea/xea.c
index cd11b0ada7..38e841c5f6 100644
--- a/board/liebherr/xea/xea.c
+++ b/board/liebherr/xea/xea.c
@@ -58,7 +58,7 @@ static void init_clocks(void)
 	mxs_set_sspclk(MXC_SSPCLK3, 96000, 0);
 }
 
-#ifdef CONFIG_SPL_BUILD
+#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_FRAMEWORK)
 void board_init_f(ulong arg)
 {
 	init_clocks();
-- 
2.20.1