diff options
| author | Xiang Wang <wxjstz@126.com> | 2019-03-28 12:19:30 +0800 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2019-08-03 17:17:24 +0000 |
| commit | a6f9eab44ab0590ca7da33da0b042a8fce8da0f1 (patch) | |
| tree | da04d80fb1c25357e757e3baa2e4480fdc026dd2 /src/arch/riscv/Kconfig | |
| parent | c989e0bd56ae19770af91e30cbbf9dc5c9717da8 (diff) | |
riscv: add support for OpenSBI
Call OpenSBI in M-Mode and use it to set up SBI and to lockdown the
platform. It will also jump to the specified payload when done.
This behaviour is similar to BL31 on aarch31.
The payload is 41KiB in size on qemu.
Tested on qemu-riscv:
Required to boot a kernel as OpenSBI's instruction emulation feature
is required on that virtual machine.
Tested on SiFive/unleashed:
The earlycon is working. No console after regular serial driver
should take over, which might be related to kernel config.
Change-Id: I2a178595bd2aa2e1f114cbc69e8eadd46955b54d
Signed-off-by: Xiang Wang <merle@hardenedlinux.org>
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32394
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Diffstat (limited to 'src/arch/riscv/Kconfig')
| -rw-r--r-- | src/arch/riscv/Kconfig | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/src/arch/riscv/Kconfig b/src/arch/riscv/Kconfig index a4f1788497..f2ca571c97 100644 --- a/src/arch/riscv/Kconfig +++ b/src/arch/riscv/Kconfig @@ -41,6 +41,30 @@ config ARCH_RISCV_S bool default n +config RISCV_HAS_OPENSBI + def_bool n + +config RISCV_OPENSBI + bool "Use OpenSBI to hand over control to payload" + depends on ARCH_RISCV_M && ARCH_RISCV_S + depends on RISCV_HAS_OPENSBI + default n + help + Load OpenSBI after payload has been loaded and use it to + provide the SBI and to handover control to payload. + +config OPENSBI_PLATFORM + string + depends on RISCV_HAS_OPENSBI + help + The OpenSBI platform to build for. + +config OPENSBI_TEXT_START + hex + depends on RISCV_HAS_OPENSBI + help + The linking address used to build opensbi. + config ARCH_RISCV_U # U (user) mode is for programs. bool |