diff options
author | Xiang Wang <wxjstz@126.com> | 2018-09-11 15:53:36 +0800 |
---|---|---|
committer | Patrick Georgi <pgeorgi@google.com> | 2018-10-11 10:56:54 +0000 |
commit | 4356e09235b911ad0c66f7467e25f6a88e823009 (patch) | |
tree | a430040c577e63efdf37bbe07e7da32fe2414728 /src/arch/riscv/include | |
parent | a08475e9abe48393453560a7bdd9ffc040be7845 (diff) |
riscv: add physical memory protection (PMP) support
These codes are written by me based on the privileged instruction set.
I tested it by qemu/riscv-probe.
Change-Id: I2e9e0c94e6518f63ade7680a3ce68bacfae219d4
Signed-off-by: Xiang Wang <wxjstz@126.com>
Reviewed-on: https://review.coreboot.org/28569
Reviewed-by: Philipp Hug <philipp@hug.cx>
Reviewed-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/arch/riscv/include')
-rw-r--r-- | src/arch/riscv/include/arch/pmp.h | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/src/arch/riscv/include/arch/pmp.h b/src/arch/riscv/include/arch/pmp.h new file mode 100644 index 0000000000..f671c0297b --- /dev/null +++ b/src/arch/riscv/include/arch/pmp.h @@ -0,0 +1,31 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2018 HardenedLinux + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __RISCV_PMP_H__ +#define __RISCV_PMP_H__ + +/* + * this function needs to be implemented by a specific SoC. + * return number of PMP entries for current hart + */ +extern int pmp_entries_num(void); + +/* reset PMP setting */ +void reset_pmp(void); + +/* set up PMP record */ +void setup_pmp(uintptr_t base, uintptr_t size, uintptr_t flags); + +#endif /* __RISCV_PMP_H__ */ |