diff options
| author | Lukas Auer <lukas.auer@aisec.fraunhofer.de> | 2019-08-21 22:14:44 +0300 |
|---|---|---|
| committer | Andes <uboot@andestech.com> | 2019-08-26 11:07:42 +0300 |
| commit | 5e30e45c83264841018dc8135034426fd0c0f857 (patch) | |
| tree | 87054cf4d9db17ca06e610b6325c8a6138d5c29c /common/spl/spl.c | |
| parent | fbfd92bf9bdc39d6537806ab58a83a48e5a2c004 (diff) | |
| download | u-boot-5e30e45c83264841018dc8135034426fd0c0f857.tar.xz | |
spl: support booting via RISC-V OpenSBI
RISC-V OpenSBI is an open-source implementation of the RISC-V Supervisor
Binary Interface (SBI) specification. It is required by Linux and U-Boot
running in supervisor mode. This patch adds support for booting via the
OpenSBI FW_DYNAMIC firmware. It supports OpenSBI version 0.4 and higher.
In this configuration, U-Boot SPL starts in machine mode. After loading
OpenSBI and U-Boot proper, it will start OpenSBI. All necessary
parameters are generated by U-Boot SPL and are passed to OpenSBI. U-Boot
proper is started in supervisor mode by OpenSBI. Support for OpenSBI is
enabled with CONFIG_SPL_OPENSBI. An additional configuration entry,
CONFIG_SPL_OPENSBI_LOAD_ADDR, is used to specify the load address of the
OpenSBI firmware binary. It is not used directly in U-Boot and instead
is intended to make the value available to scripts such as FIT
configuration generators.
The header file include/opensbi.h is based on header files from the
OpenSBI project. They are recent, as of commit bae54f764570 ("firmware:
Add fw_dynamic firmware").
Signed-off-by: Lukas Auer <lukas.auer@aisec.fraunhofer.de>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Anup Patel <anup.patel@wdc.com>
Diffstat (limited to 'common/spl/spl.c')
| -rw-r--r-- | common/spl/spl.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/common/spl/spl.c b/common/spl/spl.c index 2c696f2a79..8c9415bedf 100644 --- a/common/spl/spl.c +++ b/common/spl/spl.c @@ -659,6 +659,12 @@ void board_init_r(gd_t *dummy1, ulong dummy2) (void *)spl_image.entry_point); break; #endif +#if CONFIG_IS_ENABLED(OPENSBI) + case IH_OS_OPENSBI: + debug("Jumping to U-Boot via RISC-V OpenSBI\n"); + spl_invoke_opensbi(&spl_image); + break; +#endif #ifdef CONFIG_SPL_OS_BOOT case IH_OS_LINUX: debug("Jumping to Linux\n"); |