This patchset allows us runing u-boot in S-mode.
This is particularly useful on platforms where M-mode runtime firmware is an independent firmware and u-boot is used as last stage OS bootloader.
The patchset is tested on QEMU in both M-mode and S-mode.
Anup Patel (3): riscv: Add kconfig option to run u-boot in S-mode riscv: qemu: Use different SYS_TEXT_BASE for S-mode riscv: Add S-mode defconfigs for QEMU virt machine
arch/riscv/Kconfig | 6 ++++++ arch/riscv/cpu/start.S | 31 ++++++++++++++++++++++++++++ board/emulation/qemu-riscv/Kconfig | 3 ++- configs/qemu-riscv32-smode_defconfig | 7 +++++++ configs/qemu-riscv64-smode_defconfig | 8 +++++++ 5 files changed, 54 insertions(+), 1 deletion(-) create mode 100644 configs/qemu-riscv32-smode_defconfig create mode 100644 configs/qemu-riscv64-smode_defconfig