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-rw-r--r--src/soc/amd/common/block/include/amdblocks/psp.h55
-rw-r--r--src/soc/amd/common/block/psp/Makefile.inc1
-rw-r--r--src/soc/amd/common/block/psp/psp_def.h19
-rw-r--r--src/soc/amd/common/block/psp/psp_smm.c78
4 files changed, 143 insertions, 10 deletions
diff --git a/src/soc/amd/common/block/include/amdblocks/psp.h b/src/soc/amd/common/block/include/amdblocks/psp.h
index 53946fb8d2..a1c1152af9 100644
--- a/src/soc/amd/common/block/include/amdblocks/psp.h
+++ b/src/soc/amd/common/block/include/amdblocks/psp.h
@@ -7,21 +7,56 @@
/* Get the mailbox base address - specific to family of device. */
void *soc_get_mbox_address(void);
+#define SMM_TRIGGER_IO 0
+#define SMM_TRIGGER_MEM 1
+
+#define SMM_TRIGGER_BYTE 0
+#define SMM_TRIGGER_WORD 1
+#define SMM_TRIGGER_DWORD 2
+
+struct smm_trigger_info {
+ uint64_t address; /* Memory or IO address */
+ uint32_t address_type; /* 0=I/O, 1=memory */
+ uint32_t value_width; /* 0=byte, 1=word, 2=qword */
+ uint32_t value_and_mask;
+ uint32_t value_or_mask;
+} __packed;
+
+struct smm_register {
+ uint64_t address; /* Memory or IO address */
+ uint32_t address_type; /* 0=I/O, 1=memory */
+ uint32_t value_width; /* 0=byte, 1=word, 2=qword */
+ uint32_t reg_bit_mask;
+ uint32_t expect_value;
+} __packed;
+
+struct smm_register_info {
+ struct smm_register smi_enb;
+ struct smm_register eos;
+ struct smm_register psp_smi_en;
+ struct smm_register reserved[5];
+} __packed;
+
+void soc_fill_smm_trig_info(struct smm_trigger_info *trig);
+void soc_fill_smm_reg_info(struct smm_register_info *reg); /* v2 only */
+
/* BIOS-to-PSP functions return 0 if successful, else negative value */
-#define PSPSTS_SUCCESS 0
-#define PSPSTS_NOBASE 1
-#define PSPSTS_HALTED 2
-#define PSPSTS_RECOVERY 3
-#define PSPSTS_SEND_ERROR 4
-#define PSPSTS_INIT_TIMEOUT 5
-#define PSPSTS_CMD_TIMEOUT 6
+#define PSPSTS_SUCCESS 0
+#define PSPSTS_NOBASE 1
+#define PSPSTS_HALTED 2
+#define PSPSTS_RECOVERY 3
+#define PSPSTS_SEND_ERROR 4
+#define PSPSTS_INIT_TIMEOUT 5
+#define PSPSTS_CMD_TIMEOUT 6
/* other error codes */
-#define PSPSTS_UNSUPPORTED 7
-#define PSPSTS_INVALID_NAME 8
-#define PSPSTS_INVALID_BLOB 9
+#define PSPSTS_UNSUPPORTED 7
+#define PSPSTS_INVALID_NAME 8
+#define PSPSTS_INVALID_BLOB 9
int psp_notify_dram(void);
+int psp_notify_smm(void);
+
/*
* type: identical to the corresponding PSP command, e.g. pass
* MBOX_BIOS_CMD_SMU_FW2 to load SMU FW2 blob.
diff --git a/src/soc/amd/common/block/psp/Makefile.inc b/src/soc/amd/common/block/psp/Makefile.inc
index dc9a385e39..c2a33354ad 100644
--- a/src/soc/amd/common/block/psp/Makefile.inc
+++ b/src/soc/amd/common/block/psp/Makefile.inc
@@ -11,5 +11,6 @@ ramstage-$(CONFIG_SOC_AMD_COMMON_BLOCK_PSP_GEN1) += psp_gen1.c
ramstage-$(CONFIG_SOC_AMD_COMMON_BLOCK_PSP_GEN2) += psp_gen2.c
smm-$(CONFIG_SOC_AMD_COMMON_BLOCK_PSP) += psp.c
+smm-$(CONFIG_SOC_AMD_COMMON_BLOCK_PSP) += psp_smm.c
smm-$(CONFIG_SOC_AMD_COMMON_BLOCK_PSP_GEN1) += psp_gen1.c
smm-$(CONFIG_SOC_AMD_COMMON_BLOCK_PSP_GEN2) += psp_gen2.c
diff --git a/src/soc/amd/common/block/psp/psp_def.h b/src/soc/amd/common/block/psp/psp_def.h
index f3ac5c2181..63ca3abb0a 100644
--- a/src/soc/amd/common/block/psp/psp_def.h
+++ b/src/soc/amd/common/block/psp/psp_def.h
@@ -6,6 +6,7 @@
#include <types.h>
#include <commonlib/helpers.h>
+#include <amdblocks/psp.h>
/* x86 to PSP commands */
#define MBOX_BIOS_CMD_DRAM_INFO 0x01
@@ -81,6 +82,24 @@ struct mbox_default_buffer { /* command-response buffer unused by command */
struct mbox_buffer_header header;
} __attribute__((packed, aligned(32)));
+struct smm_req_buffer {
+ uint64_t smm_base; /* TSEG base */
+ uint64_t smm_mask; /* TSEG mask */
+ uint64_t psp_smm_data_region; /* PSP region in SMM space */
+ uint64_t psp_smm_data_length; /* PSP region length in SMM space */
+ struct smm_trigger_info smm_trig_info;
+#if CONFIG(SOC_AMD_COMMON_BLOCK_PSP_GEN2)
+ struct smm_register_info smm_reg_info;
+#endif
+ uint64_t psp_mbox_smm_buffer_address;
+ uint64_t psp_mbox_smm_flag_address;
+} __packed;
+
+struct mbox_cmd_smm_info_buffer {
+ struct mbox_buffer_header header;
+ struct smm_req_buffer req;
+} __attribute__((packed, aligned(32)));
+
struct mbox_cmd_sx_info_buffer {
struct mbox_buffer_header header;
u8 sleep_type;
diff --git a/src/soc/amd/common/block/psp/psp_smm.c b/src/soc/amd/common/block/psp/psp_smm.c
new file mode 100644
index 0000000000..cc15738881
--- /dev/null
+++ b/src/soc/amd/common/block/psp/psp_smm.c
@@ -0,0 +1,78 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/* This file is part of the coreboot project. */
+
+#include <device/mmio.h>
+#include <cpu/x86/msr.h>
+#include <cpu/amd/msr.h>
+#include <cbfs.h>
+#include <region_file.h>
+#include <timer.h>
+#include <bootstate.h>
+#include <rules.h>
+#include <console/console.h>
+#include <amdblocks/psp.h>
+#include <soc/iomap.h>
+#include <soc/northbridge.h>
+#include "psp_def.h"
+
+#define C2P_BUFFER_MAXSIZE 0xc00 /* Core-to-PSP buffer */
+#define P2C_BUFFER_MAXSIZE 0xc00 /* PSP-to-core buffer */
+
+struct {
+ u8 buffer[C2P_BUFFER_MAXSIZE];
+} __attribute__((aligned(32))) c2p_buffer;
+
+struct {
+ u8 buffer[P2C_BUFFER_MAXSIZE];
+} __attribute__((aligned(32))) p2c_buffer;
+
+static uint32_t smm_flag; /* Non-zero for SMM, clear when not */
+
+static void set_smm_flag(void)
+{
+ smm_flag = 1;
+}
+
+static void clear_smm_flag(void)
+{
+ smm_flag = 0;
+}
+
+int psp_notify_smm(void)
+{
+ msr_t msr;
+ int cmd_status;
+ struct mbox_cmd_smm_info_buffer buffer = {
+ .header = {
+ .size = sizeof(buffer)
+ },
+ .req = {
+ .psp_smm_data_region = (uintptr_t)p2c_buffer.buffer,
+ .psp_smm_data_length = sizeof(p2c_buffer),
+ .psp_mbox_smm_buffer_address = (uintptr_t)c2p_buffer.buffer,
+ .psp_mbox_smm_flag_address = (uintptr_t)&smm_flag,
+ }
+ };
+
+ msr = rdmsr(SMM_ADDR_MSR);
+ buffer.req.smm_base = ((uint64_t)msr.hi << 32) | msr.lo;
+ msr = rdmsr(SMM_MASK_MSR);
+ msr.lo &= 0xffff0000; /* mask SMM_LOCK and SMM_TSEG_VALID and reserved bits */
+ buffer.req.smm_mask = ((uint64_t)msr.hi << 32) | msr.lo;
+
+ soc_fill_smm_trig_info(&buffer.req.smm_trig_info);
+#if (CONFIG(SOC_AMD_COMMON_BLOCK_PSP_GEN2))
+ soc_fill_smm_reg_info(&buffer.req.smm_reg_info);
+#endif
+
+ printk(BIOS_DEBUG, "PSP: Notify SMM info... ");
+
+ set_smm_flag();
+ cmd_status = send_psp_command(MBOX_BIOS_CMD_SMM_INFO, &buffer);
+ clear_smm_flag();
+
+ /* buffer's status shouldn't change but report it if it does */
+ psp_print_cmd_status(cmd_status, (struct mbox_default_buffer *)&buffer);
+
+ return cmd_status;
+}