diff options
| author | Martin Roth <martin@coreboot.org> | 2020-05-28 00:44:50 -0600 |
|---|---|---|
| committer | Martin Roth <martinroth@google.com> | 2020-07-08 19:34:59 +0000 |
| commit | c7acf1666a517f0fcfec3a5f64791932ca145c45 (patch) | |
| tree | 8f2e6c0539a028ee3f2e27e5c80fe613678e7444 /src/soc/amd/picasso/psp_verstage/include/arch/io.h | |
| parent | ac41f582351dc2c6aaaf0c1ef662e6d99b67b4ce (diff) | |
soc/amd/picasso: add psp_verstage
This is the main code for building coreboot's verstage as a userspace
application to run on the PSP. It does a minimal setup of hardware,
then runs verstage_main. It uses hardware hashing to increase the speed
and will directly reboot into recovery mode if there are any failures.
BUG=b:158124527
TEST=Build & boot trembyle
Signed-off-by: Martin Roth <martin@coreboot.org>
Change-Id: Ia58839caa5bfbae0408702ee8d02ef482f2861c4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41816
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Diffstat (limited to 'src/soc/amd/picasso/psp_verstage/include/arch/io.h')
| -rw-r--r-- | src/soc/amd/picasso/psp_verstage/include/arch/io.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/soc/amd/picasso/psp_verstage/include/arch/io.h b/src/soc/amd/picasso/psp_verstage/include/arch/io.h new file mode 100644 index 0000000000..efa128b25c --- /dev/null +++ b/src/soc/amd/picasso/psp_verstage/include/arch/io.h @@ -0,0 +1,21 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef __ARCH_IO_H__ +#define __ARCH_IO_H__ + +#include <stdint.h> + +u8 io_read8(u16 reg); +void io_write8(u16 reg, u8 value); + +static inline void outb(uint8_t value, uint16_t port) +{ + io_write8(port, value); +} + +static inline uint8_t inb(uint16_t port) +{ + return io_read8(port); +} + +#endif |