On Sat, Jan 17, 2026 at 02:01:36PM -0500, Raymond Mao wrote: > From: Raymond Mao <[email protected]> > > Add SPL support featuring debug UART output for early boot > diagnostics on K1 SoC. > > Signed-off-by: Raymond Mao <[email protected]> > --- > arch/riscv/cpu/k1/Kconfig | 2 ++ > arch/riscv/dts/Makefile | 1 + > arch/riscv/dts/k1-spl.dts | 26 ++++++++++++++++++++++++++ > arch/riscv/dts/k1.dtsi | 2 +- > board/spacemit/k1/Makefile | 2 ++ > board/spacemit/k1/spl.c | 24 ++++++++++++++++++++++++ > configs/k1_defconfig | 21 ++++++++++++++++++++- > include/configs/k1.h | 2 ++ > 8 files changed, 78 insertions(+), 2 deletions(-) > create mode 100644 arch/riscv/dts/k1-spl.dts > create mode 100644 board/spacemit/k1/spl.c
... > diff --git a/configs/k1_defconfig b/configs/k1_defconfig > index 0bdc3c800f0..f1a16735943 100644 > --- a/configs/k1_defconfig > +++ b/configs/k1_defconfig > @@ -3,7 +3,19 @@ CONFIG_SYS_MALLOC_LEN=0x1000000 > CONFIG_NR_DRAM_BANKS=2 > CONFIG_HAS_CUSTOM_SYS_INIT_SP_ADDR=y > CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x1000000 > -CONFIG_DEFAULT_DEVICE_TREE="k1-bananapi-f3" > +CONFIG_DEFAULT_DEVICE_TREE="k1-spl" > +CONFIG_SPL=y > +CONFIG_SPL_TEXT_BASE=0xC0801000 Please be consistent about cases in hex. Rest of the file uses lowercases, and I think it's better to align. > +CONFIG_SPL_MAX_SIZE=0x33000 > +CONFIG_SPL_BSS_START_ADDR=0xC0837000 > +CONFIG_SPL_BSS_MAX_SIZE=0x2000 > +# CONFIG_SPL_SHARES_INIT_SP_ADDR is not set > +CONFIG_SPL_HAVE_INIT_STACK=y > +CONFIG_SPL_STACK=0xC0840000 > +CONFIG_SPL_SIZE_LIMIT=0x31000 > +CONFIG_SPL_FIT_SIGNATURE=y > +CONFIG_SPL_LOAD_FIT_ADDRESS=0x08000000 > +CONFIG_STACK_SIZE=0x100000 > CONFIG_SYS_BOOTM_LEN=0xa000000 > CONFIG_SYS_LOAD_ADDR=0x200000 > CONFIG_ARCH_RV64I=y > @@ -23,3 +35,10 @@ CONFIG_PINCTRL_SINGLE=y > CONFIG_RESET_SPACEMIT_K1=y > CONFIG_SYS_NS16550=y > CONFIG_SYS_NS16550_MEM32=y > +CONFIG_DEBUG_UART=y > +CONFIG_DEBUG_UART_BASE=0xD4017000 > +CONFIG_DEBUG_UART_CLOCK=14700000 > +CONFIG_DEBUG_UART_SHIFT=2 > +CONFIG_DEBUG_UART_NS16550=y > +CONFIG_DEBUG_UART_ANNOUNCE=y Regards, Yao Zi
