On Tue, May 21, 2019 at 10:09 AM Sekhar Nori <nsek...@ti.com> wrote:
>
> 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.
The README also states preloader_console_init() can get called from
board_init_f(). Doing this enables for debugging of board_init_r
>
> Tested using MMC/SD boot on OMAP-L138 LCDK board.
>
> Signed-off-by: Sekhar Nori <nsek...@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();
What about a reference to board_early_init_f()?
Looking at other boards, it appears that we should call that here.
Both the LCDK and da850 evm have the function enabled to configure the
DSP.
adam
> +}
> +
> u32 spl_boot_device(void)
> {
> switch (davinci_syscfg_regs->bootcfg) {
> --
> 2.16.2
>
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