From 60a4643d6f53c2770bede1a649c3f14cafaa8b75 Mon Sep 17 00:00:00 2001 From: Felix Held Date: Thu, 12 Nov 2020 00:14:16 +0100 Subject: soc/amd/common: factor out SMU code from Picasso The SMU mailbox access code from Picasso can be reused in the next generation, so factor out the code to soc/amd/common/block/smu. Since the mailbox register offsets in the indirect address space, the number of arguments and the message IDs don't always match between different devices, keep those in the soc-specific directories. Change-Id: Ibaf5b91ab35428e4c771e7163c6e0c4fc50371e7 Signed-off-by: Felix Held Reviewed-on: https://review.coreboot.org/c/coreboot/+/47483 Tested-by: build bot (Jenkins) Reviewed-by: Jeremy Soller Reviewed-by: Marshall Dawson --- src/soc/amd/common/block/include/amdblocks/smu.h | 26 ++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 src/soc/amd/common/block/include/amdblocks/smu.h (limited to 'src/soc/amd/common/block/include') diff --git a/src/soc/amd/common/block/include/amdblocks/smu.h b/src/soc/amd/common/block/include/amdblocks/smu.h new file mode 100644 index 0000000000..57ef3b324e --- /dev/null +++ b/src/soc/amd/common/block/include/amdblocks/smu.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef __AMD_BLOCK_SMU_H__ +#define __AMD_BLOCK_SMU_H__ + +#include +#include /* SoC-dependent definitions for SMU access */ + +/* SMU registers accessed indirectly using an index/data pair in D0F00 config space */ +#define SMU_INDEX_ADDR 0xb8 /* 32 bit */ +#define SMU_DATA_ADDR 0xbc /* 32 bit */ + +/* Arguments indexed locations are contiguous; the number is SoC-dependent */ +#define REG_ADDR_MESG_ARG(x) (REG_ADDR_MESG_ARGS_BASE + ((x) * sizeof(uint32_t))) + +struct smu_payload { + uint32_t msg[SMU_NUM_ARGS]; +}; + +/* + * Send a message and bi-directional payload to the SMU. The SMU's response, if any, is + * returned via *arg. Returns CB_SUCCESS if success or CB_ERR on failure. + */ +enum cb_err send_smu_message(enum smu_message_id message_id, struct smu_payload *arg); + +#endif /* __AMD_BLOCK_SMU_H__ */ -- cgit v1.2.3