diff options
| author | Marshall Dawson <marshall.dawson@amd.corp-partner.google.com> | 2020-01-24 09:42:57 -0700 |
|---|---|---|
| committer | Felix Held <felix-coreboot@felixheld.de> | 2020-04-15 12:24:17 +0000 |
| commit | 5a73fc35e23b15b0a80e2a26553953764907be1d (patch) | |
| tree | 70cb0c6cca4558519464b5048db05b090a3e5564 /src/soc/amd/picasso/psp.c | |
| parent | 0c70b4ac117fb3e92aec4ffb81723a9c4d9da1e8 (diff) | |
| download | coreboot-5a73fc35e23b15b0a80e2a26553953764907be1d.tar.xz | |
soc/amd/picasso: Add common PSP support
Add a new psp.c file so the base address can be determined, and select
the common/block/psp feature.
BUG=b:153677737
Change-Id: I322fd11a867a817375ff38a008219f9236c4f2ea
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://chromium-review.googlesource.com/2020368
Tested-by: Eric Peers <epeers@google.com>
Reviewed-by: Eric Peers <epeers@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40296
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/amd/picasso/psp.c')
| -rw-r--r-- | src/soc/amd/picasso/psp.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/soc/amd/picasso/psp.c b/src/soc/amd/picasso/psp.c new file mode 100644 index 0000000000..d6eb7d31a3 --- /dev/null +++ b/src/soc/amd/picasso/psp.c @@ -0,0 +1,22 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* This file is part of the coreboot project. */ + +#include <console/console.h> +#include <cpu/x86/msr.h> +#include <amdblocks/psp.h> + +#define PSP_MAILBOX_OFFSET 0x10570 +#define MSR_CU_CBBCFG 0xc00110a2 + +void *soc_get_mbox_address(void) +{ + uintptr_t psp_mmio; + + psp_mmio = rdmsr(MSR_CU_CBBCFG).lo; + if (psp_mmio == 0xffffffff) { + printk(BIOS_WARNING, "PSP: MSR_CU_CBBCFG uninitialized\n"); + return 0; + } + + return (void *)(psp_mmio + PSP_MAILBOX_OFFSET); +} |