The firmware invoking main U-Boot uses

* a0 to pass the boot hart * a1 to pass a device-tree

Let the bdinfo command print this information, e.g.

boot hart = 0x000000000000001b firmware fdt= 0x0000000087e00000

The firmware fdt field will only be printed if it is non-zero.

Signed-off-by: Heinrich Schuchardt heinrich.schuchardt@canonical.com --- arch/riscv/lib/Makefile | 1 + arch/riscv/lib/bdinfo.c | 18 ++++++++++++++++++ 2 files changed, 19 insertions(+) create mode 100644 arch/riscv/lib/bdinfo.c

diff --git a/arch/riscv/lib/Makefile b/arch/riscv/lib/Makefile index 9a05b662fd6..65dc49f6fa5 100644 --- a/arch/riscv/lib/Makefile +++ b/arch/riscv/lib/Makefile @@ -26,6 +26,7 @@ obj-y += setjmp.o obj-$(CONFIG_$(SPL_)SMP) += smp.o obj-$(CONFIG_SPL_BUILD) += spl.o obj-y += fdt_fixup.o +obj-$(CONFIG_$(SPL)CMD_BDI) += bdinfo.o

# For building EFI apps CFLAGS_NON_EFI := -fstack-protector-strong diff --git a/arch/riscv/lib/bdinfo.c b/arch/riscv/lib/bdinfo.c new file mode 100644 index 00000000000..7734e51d670 --- /dev/null +++ b/arch/riscv/lib/bdinfo.c @@ -0,0 +1,18 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * RISC-V-specific information for the 'bdinfo' command + */ + +#include <init.h> +#include <asm/global_data.h> + +DECLARE_GLOBAL_DATA_PTR; + +void arch_print_bdinfo(void) +{ + bdinfo_print_num_l("boot hart", gd->arch.boot_hart); + + if (gd->arch.firmware_fdt_addr) + bdinfo_print_num_ll("firmware fdt", + (long long)gd->arch.firmware_fdt_addr); +}