Hi Thomas,
On 2019/11/15 上午12:09, Tom Hebb wrote:
Hi Kever,
On Thu, Nov 14, 2019 at 1:25 AM Kever Yang <kever.y...@rock-chips.com
<mailto:kever.y...@rock-chips.com>> wrote:
Hi Thomas,
On 2019/11/11 上午12:25, Thomas Hebb wrote:
> b7abef2ecbcc ("rockchip: rk3399: Migrate to use common spl board
file")
> removed SoC-specific code for RK3399's SPL and in the process
introduced
> two regressions:
>
> 1. It caused the previously-unconditional DRAM initialization in
> board_init_f() to only happen when compiling a
configuration that
> did not support TPL, meaning DRAM would never get
initialized if TPL
> was supported but disabled.
If the board support TPL, that means the dram init should be done in
TPL, no matter the really
implement is the U-Boot TPL or use rockchip rkbin instead. In this
case,
enable DRAM driver in SPL
make no sense, for dram driver itself would only get dram size
which do
not have any use other
than the case CONFIG_SPL_OS_BOOT.
I would like to boot my RK3399 board with only an SPL, loaded directly
by the.
BootROM into IRAM. I have no need for a three-stage bootloader, and adding
only increases boot time and adds complexity. Is there a reason not to
support
this use case?
OK, I understand it now, you update is necessary, thanks.
Well, it will be better to make this patch into two patches.
I do realize that this will add an unnecessary call if someone uses
rkbin for DDR
init and SPL for the second stage. Do any boards actually do that, though?
> 2. It reordered the DRAM initialization before
rockchip_stimer_init(),
> which as far as I can tell causes RK3399 to lock up completely.
The stimer_init should goes before dram_init.
So please only update the order.
Should timer_init() also go before dram_init(), like I have it now? Or
should I put
dram_init() between rockchip_stimer_init() and timer_init()?
timer_init() goes before dram_init, because the dram_init() will use
udelay().
Thanks,
- Kever
Thanks,
- Kever
>
> Fix both of these issues in the common code so that we can again
boot
> RK3399 without a TPL. This fixes custom configurations that have
> disabled TPL, and it should also unbreak the "ficus-rk3399",
> "rock960-rk3399", and "chromebook_bob" defconfigs, although since I
> don't have any of those devices I can't confirm they're broken now.
>
> Signed-off-by: Thomas Hebb <tommyh...@gmail.com
<mailto:tommyh...@gmail.com>>
> ---
> arch/arm/mach-rockchip/spl.c | 18 +++++++++---------
> 1 file changed, 9 insertions(+), 9 deletions(-)
>
> diff --git a/arch/arm/mach-rockchip/spl.c
b/arch/arm/mach-rockchip/spl.c
> index 92102b39e7..089f0a5258 100644
> --- a/arch/arm/mach-rockchip/spl.c
> +++ b/arch/arm/mach-rockchip/spl.c
> @@ -103,7 +103,7 @@ __weak int arch_cpu_init(void)
> void board_init_f(ulong dummy)
> {
> int ret;
> -#if !defined(CONFIG_SUPPORT_TPL) || defined(CONFIG_SPL_OS_BOOT)
> +#if !defined(CONFIG_TPL) || defined(CONFIG_SPL_OS_BOOT)
> struct udevice *dev;
> #endif
>
> @@ -128,20 +128,20 @@ void board_init_f(ulong dummy)
> hang();
> }
> arch_cpu_init();
> -#if !defined(CONFIG_SUPPORT_TPL) || defined(CONFIG_SPL_OS_BOOT)
> - debug("\nspl:init dram\n");
> - ret = uclass_get_device(UCLASS_RAM, 0, &dev);
> - if (ret) {
> - printf("DRAM init failed: %d\n", ret);
> - return;
> - }
> -#endif
> #if !defined(CONFIG_ROCKCHIP_RK3188)
> rockchip_stimer_init();
> #endif
> #ifdef CONFIG_SYS_ARCH_TIMER
> /* Init ARM arch timer in arch/arm/cpu/armv7/arch_timer.c */
> timer_init();
> +#endif
> +#if !defined(CONFIG_TPL) || defined(CONFIG_SPL_OS_BOOT)
> + debug("\nspl:init dram\n");
> + ret = uclass_get_device(UCLASS_RAM, 0, &dev);
> + if (ret) {
> + printf("DRAM init failed: %d\n", ret);
> + return;
> + }
> #endif
> preloader_console_init();
> }
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