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firmware: stratix10-svc: extend svc to support RSU feature 

Extend Intel Stratix10 service layer driver to support new RSU
DCMF status reporting.

The status of each DCMF is reported. The currently used DCMF is used as
reference, while the other three are compared against it to determine if
they are corrupted.

DCMF = Decision Configuration Management Firmware
RSU = Remote System Update

Signed-off-by: Radu Bacrau <radu.bacrau@intel.com>
Signed-off-by: Ang Tien Sung <tien.sung.ang@intel.com>
Signed-off-by: Kah Jing Lee <kah.jing.lee@intel.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
Link: https://lore.kernel.org/r/20220711223140.2307945-5-dinguyen@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kah Jing Lee 2022-07-11 17:31:39 -05:00 committed by Greg Kroah-Hartman
parent 4a6c8c565d
commit 1b4394c5d7
3 changed files with 37 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/firmware/stratix10-svc.c
View File

@ -338,6 +338,7 @@ static void svc_thread_recv_status_ok(struct stratix10_svc_data *p_data,
break;
case COMMAND_RSU_RETRY:
case COMMAND_RSU_MAX_RETRY:
case COMMAND_RSU_DCMF_STATUS:
case COMMAND_FIRMWARE_VERSION:
cb_data->status = BIT(SVC_STATUS_OK);
cb_data->kaddr1 = &res.a1;
@ -518,7 +519,11 @@ static int svc_normal_to_secure_thread(void *data)
a1 = (unsigned long)pdata->paddr;
a2 = (unsigned long)pdata->size;
break;
case COMMAND_RSU_DCMF_STATUS:
a0 = INTEL_SIP_SMC_RSU_DCMF_STATUS;
a1 = 0;
a2 = 0;
break;
default:
pr_warn("it shouldn't happen\n");
break;
@ -596,8 +601,9 @@ static int svc_normal_to_secure_thread(void *data)
pr_err("%s: STATUS_ERROR\n", __func__);
cbdata->status = BIT(SVC_STATUS_ERROR);
cbdata->kaddr1 = &res.a1;
cbdata->kaddr2 = NULL;
cbdata->kaddr3 = NULL;
cbdata->kaddr2 = (res.a2) ?
svc_pa_to_va(res.a2) : NULL;
cbdata->kaddr3 = (res.a3) ? &res.a3 : NULL;
pdata->chan->scl->receive_cb(pdata->chan->scl, cbdata);
break;
default:
@ -605,12 +611,10 @@ static int svc_normal_to_secure_thread(void *data)
/*
* be compatible with older version firmware which
* doesn't support RSU notify or retry
* doesn't support newer RSU commands
*/
if ((pdata->command == COMMAND_RSU_RETRY) ||
(pdata->command == COMMAND_RSU_MAX_RETRY) ||
(pdata->command == COMMAND_RSU_NOTIFY) ||
(pdata->command == COMMAND_FIRMWARE_VERSION)) {
if ((pdata->command != COMMAND_RSU_UPDATE) &&
(pdata->command != COMMAND_RSU_STATUS)) {
cbdata->status =
BIT(SVC_STATUS_NO_SUPPORT);
cbdata->kaddr1 = NULL;

21
include/linux/firmware/intel/stratix10-smc.h
View File

@ -403,6 +403,27 @@ INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_FPGA_CONFIG_COMPLETED_WRITE)
#define INTEL_SIP_SMC_RSU_MAX_RETRY \
INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_RSU_MAX_RETRY)
/**
* Request INTEL_SIP_SMC_RSU_DCMF_STATUS
*
* Sync call used by service driver at EL1 to query DCMF status from FW
*
* Call register usage:
* a0 INTEL_SIP_SMC_RSU_DCMF_STATUS
* a1-7 not used
*
* Return status
* a0 INTEL_SIP_SMC_STATUS_OK
* a1 dcmf3 | dcmf2 | dcmf1 | dcmf0
*
* Or
*
* a0 INTEL_SIP_SMC_RSU_ERROR
*/
#define INTEL_SIP_SMC_FUNCID_RSU_DCMF_STATUS 20
#define INTEL_SIP_SMC_RSU_DCMF_STATUS \
INTEL_SIP_SMC_FAST_CALL_VAL(INTEL_SIP_SMC_FUNCID_RSU_DCMF_STATUS)
/**
* Request INTEL_SIP_SMC_SERVICE_COMPLETED
* Sync call to check if the secure world have completed service request

4
include/linux/firmware/intel/stratix10-svc-client.h
View File

@ -114,6 +114,9 @@ struct stratix10_svc_chan;
* @COMMAND_FIRMWARE_VERSION: query running firmware version, return status
* is SVC_STATUS_OK or SVC_STATUS_ERROR
*
* @COMMAND_RSU_DCMF_STATUS: query firmware for the DCMF status
* return status is SVC_STATUS_OK or SVC_STATUS_ERROR
*
* @COMMAND_FCS_REQUEST_SERVICE: request validation of image from firmware,
* return status is SVC_STATUS_OK, SVC_STATUS_INVALID_PARAM
*
@ -146,6 +149,7 @@ enum stratix10_svc_command_code {
COMMAND_RSU_RETRY,
COMMAND_RSU_MAX_RETRY,
COMMAND_RSU_DCMF_VERSION,
COMMAND_RSU_DCMF_STATUS,
COMMAND_FIRMWARE_VERSION,
/* for FCS */
COMMAND_FCS_REQUEST_SERVICE = 20,