[U-Boot] [PATCH 2/2] ARM: davinci: SPL: fix BSS initialization

[Sekhar Nori]

U-Boot README recommends initializing SDRAM in board_init_f(). DA850
was doing it as part of board_init_r() (through call to spl_board_init()
which calls arch_cpu_init() which calls da850_ddr_setup())

This worked fine till commit 15b8c7505819 ("davinci:
da850evm/omapl138-lcdk: Move BSS to SDRAM because SRAM is full") moved
BSS to SDRAM.

Functions like mmc_initialize() called in board_init_r() assume BSS is
available. Since SDRAM was not initialized when arch/arm/lib/crt0.S tried
to initialize BSS to 0, BSS is not initialized correctly.

Fix this by simply calling arch_cpu_init() from board_init_f(). Since the
README recommends calling preloader_console_init() from spl_board_init(),
we keep it as-it-is.

Tested using MMC/SD boot on OMAP-L138 LCDK board.

Signed-off-by: Sekhar Nori <nsekhar at ti.com>
---
 arch/arm/mach-davinci/spl.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-davinci/spl.c b/arch/arm/mach-davinci/spl.c
index 103639e34757..117b5ee836f8 100644
--- a/arch/arm/mach-davinci/spl.c
+++ b/arch/arm/mach-davinci/spl.c
@@ -33,10 +33,14 @@ void putc(char c)
 
 void spl_board_init(void)
 {
-	arch_cpu_init();
 	preloader_console_init();
 }
 
+void board_init_f(ulong dummy)
+{
+	arch_cpu_init();
+}
+
 u32 spl_boot_device(void)
 {
 	switch (davinci_syscfg_regs->bootcfg) {
-- 
2.16.2