Hi Eddie, On 22 October 2015 at 10:01, Eddie Cai <eddie....@rock-chips.com> wrote: > Hi Simon > > 2015-10-22 22:07 GMT+08:00 Simon Glass <s...@chromium.org>: >> >> Hi Lin, >> >> On 20 October 2015 at 20:37, Lin Huang <h...@rock-chips.com> wrote: >> > it may not use SPL in other rockchip SOC, so move SUPPORT_SPL and >> > SPL config to rk3288 configuration. >> > >> > Signed-off-by: Lin Huang <h...@rock-chips.com> >> > --- >> > Changes in v1: None >> > >> > arch/arm/Kconfig | 2 -- >> > arch/arm/mach-rockchip/Kconfig | 2 ++ >> > 2 files changed, 2 insertions(+), 2 deletions(-) >> > >> > diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig >> > index 194fb7b..40fa741 100644 >> > --- a/arch/arm/Kconfig >> > +++ b/arch/arm/Kconfig >> > @@ -831,8 +831,6 @@ config TARGET_STM32F429_DISCOVERY >> > >> > config ARCH_ROCKCHIP >> > bool "Support Rockchip SoCs" >> > - select SUPPORT_SPL >> > - select SPL >> > select OF_CONTROL >> > select CPU_V7 >> > select DM >> > diff --git a/arch/arm/mach-rockchip/Kconfig >> > b/arch/arm/mach-rockchip/Kconfig >> > index ab50f4e..15cd380 100644 >> > --- a/arch/arm/mach-rockchip/Kconfig >> > +++ b/arch/arm/mach-rockchip/Kconfig >> > @@ -2,6 +2,8 @@ if ARCH_ROCKCHIP >> > >> > config ROCKCHIP_RK3288 >> > bool "Support Rockchip RK3288" >> > + select SUPPORT_SPL >> > + select SPL >> > help >> > The Rockchip RK3288 is a ARM-based SoC with a quad-core >> > Cortex-A17 >> > including NEON and GPU, 1MB L2 cache, Mali-T7 graphics, two >> > -- >> > 1.9.1 >> > >> >> We should avoid little binary blobs for booting the chip. I think we >> can live with this as a stepping stone to having a proper SPL, but >> what is the plan for a proper SPL in U-Boot? > > RK3036 have only 8k sram. 4k used by boot rom. The ddr initialize code is > almost 4k. So i don't think we can do SPL.
How does U-Boot get loaded in this case? Does it use ROM code? If so then I think we should create an SPL that handles the DDR init and then returns to the ROM code for loading U-Boot. Also we should document how this works in the README. Regards, Simon _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
