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tools/arch/x86: intel_sdsi: Add support for new GUID 

The structure and content of the On Demand registers is based on the GUID
which is read from hardware through sysfs. Add support for decoding the
registers of a new GUID 0xF210D9EF.

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Link: https://lore.kernel.org/r/20221119002343.1281885-9-david.e.box@linux.intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
David E. Box 2022-11-18 16:23:42 -08:00 committed by Hans de Goede
parent a8041a89b7
commit 429e789c67
1 changed files with 25 additions and 11 deletions
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36
tools/arch/x86/intel_sdsi/intel_sdsi.c
View File

@ -35,8 +35,10 @@
#define SDSI_DEV "intel_vsec.sdsi"
#define AUX_DEV_PATH "/sys/bus/auxiliary/devices/"
#define SDSI_PATH (AUX_DEV_DIR SDSI_DEV)
#define GUID 0x6dd191
#define REGISTERS_MIN_SIZE 72
#define GUID_V1 0x6dd191
#define REGS_SIZE_GUID_V1 72
#define GUID_V2 0xF210D9EF
#define REGS_SIZE_GUID_V2 80
#define STATE_CERT_MAX_SIZE 4096
#define STATE_MAX_NUM_LICENSES 16
#define STATE_MAX_NUM_IN_BUNDLE (uint32_t)8
@ -100,9 +102,17 @@ struct sdsi_regs {
struct availability prov_avail;
struct nvram_update_limit limits;
uint64_t pcu_cr3_capid_cfg;
uint64_t socket_id;
union {
struct {
uint64_t socket_id;
} v1;
struct {
uint64_t reserved;
uint64_t socket_id;
uint64_t reserved2;
} v2;
} extra;
};
#define CONTENT_TYPE_LK_ENC 0xD
#define CONTENT_TYPE_LK_BLOB_ENC 0xE
@ -146,7 +156,7 @@ struct sdsi_dev {
struct state_certificate sc;
char *dev_name;
char *dev_path;
int guid;
uint32_t guid;
};
enum command {
@ -199,7 +209,7 @@ static int sdsi_update_registers(struct sdsi_dev *s)
return -1;
}
if (s->guid != GUID) {
if (s->guid != GUID_V1 && s->guid != GUID_V2) {
fprintf(stderr, "Unrecognized guid, 0x%x\n", s->guid);
fclose(regs_ptr);
return -1;
@ -207,7 +217,8 @@ static int sdsi_update_registers(struct sdsi_dev *s)
/* Update register info for this guid */
ret = fread(&s->regs, sizeof(uint8_t), sizeof(s->regs), regs_ptr);
if (ret != sizeof(s->regs)) {
if ((s->guid == GUID_V1 && ret != REGS_SIZE_GUID_V1) ||
(s->guid == GUID_V2 && ret != REGS_SIZE_GUID_V2)) {
fprintf(stderr, "Could not read 'registers' file\n");
fclose(regs_ptr);
return -1;
@ -252,10 +263,13 @@ static int sdsi_read_reg(struct sdsi_dev *s)
printf(" Updates Available: %d\n", s->regs.prov_avail.available);
printf(" Updates Threshold: %d\n", s->regs.prov_avail.threshold);
printf("NVRAM Udate Limit\n");
printf(" 50%% Limit Reached: %s\n", !!s->regs.limits.sdsi_50_pct ? "Yes" : "No");
printf(" 75%% Limit Reached: %s\n", !!s->regs.limits.sdsi_75_pct ? "Yes" : "No");
printf(" 90%% Limit Reached: %s\n", !!s->regs.limits.sdsi_90_pct ? "Yes" : "No");
printf("Socket ID: %ld\n", s->regs.socket_id & 0xF);
printf(" 50%% Limit Reached: %s\n", !!s->regs.limits.sdsi_50_pct ? "Yes" : "No");
printf(" 75%% Limit Reached: %s\n", !!s->regs.limits.sdsi_75_pct ? "Yes" : "No");
printf(" 90%% Limit Reached: %s\n", !!s->regs.limits.sdsi_90_pct ? "Yes" : "No");
if (s->guid == GUID_V1)
printf("Socket ID: %ld\n", s->regs.extra.v1.socket_id & 0xF);
else
printf("Socket ID: %ld\n", s->regs.extra.v2.socket_id & 0xF);
return 0;
}