This patchset allows u-boot on RK3288 device to load and boot kernels from MMC using the standard distro boot commands. Patchset is on top of the rockchip-working branch of u-boot dm
There are some small oddities with the support: - Linux crashes when try to use the FDT if it's re-allocated to memory locations above 512MB. So fdt_high is set to ensure it stays below that. - This SoC seems sensitive to the order in which the caches are disabled, when disabling the i-cache before the d-cache starting linux fails (unsure if it fails before or after jumping to linux though)
To fix the latter ``arm: Turn of d-cache before i-cache'' changes the ordering in the general v7 code. However i have not tested this yet on other device, so it may well need to be handled in rockchip specific code.
Tested on a Radxa Rock 2 with square baseboard, booting from SD card. I haven't tested eMMC yet however i suspect the SPL will need modifications there to load u-boot from eMMC rather then SD (which has index 0) ideally by detecting where the SPL itself got loaded from.
Changes in v2: - Check error code from uclass_get and thread it through to mmc_initialize - Also drop CONFIG_SPL_LED from the firefly defconfig - Fixed various typos and inconsitencies in commit message
Sjoerd Simons (8): doc: Fix reference to Rock pro when Rock 2 is meant mmc: Probe DM based mmc devices in u-boot rockchip: Disable sdio mmc slot on rk3288-firefly rockchip: Turn off CONFIG_SPL_LED_SUPPORT for firefly rockchip: Add config_distro_bootcmd support arm: Turn of d-cache before i-cache rockchip: Drop first 32kb of zeros from the rkSD image type rockchip: Update todo in README.rockchip
arch/arm/cpu/armv7/cpu.c | 15 ++++++++------ arch/arm/dts/rk3288-firefly.dtsi | 2 +- configs/firefly-rk3288_defconfig | 1 - doc/README.rockchip | 9 ++++----- drivers/mmc/mmc.c | 43 ++++++++++++++++++++++++++++++++++++---- include/configs/firefly-rk3288.h | 1 - include/configs/rk3288_common.h | 21 ++++++++++++++++++++ tools/rksd.c | 9 ++------- 8 files changed, 76 insertions(+), 25 deletions(-)