@@ -25,7 +25,7 @@
#include "mlx-bootctl.h"
#define DRIVER_NAME "mlx-bootctl"
-#define DRIVER_VERSION "1.4"
+#define DRIVER_VERSION "1.5"
#define DRIVER_DESCRIPTION "Mellanox boot control driver"
#define SB_MODE_SECURE_MASK 0x03
@@ -99,6 +99,7 @@ enum {
MLNX_MFG_TYPE_UUID_2,
MLNX_MFG_TYPE_UUID_3,
MLNX_MFG_TYPE_UUID_4,
+ MLNX_MFG_TYPE_REV,
};
/* This mutex is used to serialize MFG write and lock operations. */
@@ -110,6 +111,7 @@ static DEFINE_MUTEX(mfg_ops_lock);
#define MLNX_MFG_MODL_VAL_LEN 24
#define MLNX_MFG_SN_VAL_LEN 24
#define MLNX_MFG_UUID_VAL_LEN 40
+#define MLNX_MFG_REV_VAL_LEN 8
#define MLNX_MFG_VAL_QWORD_CNT(type) \
(MLNX_MFG_##type##_VAL_LEN / sizeof(u64))
@@ -636,6 +638,57 @@ static ssize_t uuid_store(struct device_driver *drv, const char *buf,
return count;
}
+static ssize_t rev_show(struct device_driver *drv, char *buf)
+{
+ u64 rev_data[MLNX_MFG_VAL_QWORD_CNT(REV)] = { 0 };
+ char rev[MLNX_MFG_REV_VAL_LEN + 1] = { 0 };
+ struct arm_smccc_res res;
+ int word;
+
+ mutex_lock(&mfg_ops_lock);
+ for (word = 0; word < MLNX_MFG_VAL_QWORD_CNT(REV); word++) {
+ arm_smccc_smc(MLNX_HANDLE_GET_MFG_INFO,
+ MLNX_MFG_TYPE_REV + word,
+ 0, 0, 0, 0, 0, 0, &res);
+ if (res.a0) {
+ mutex_unlock(&mfg_ops_lock);
+ return -EPERM;
+ }
+ rev_data[word] = res.a1;
+ }
+ mutex_unlock(&mfg_ops_lock);
+ memcpy(rev, rev_data, MLNX_MFG_REV_VAL_LEN);
+
+ return snprintf(buf, PAGE_SIZE, "%s", rev);
+}
+
+static ssize_t rev_store(struct device_driver *drv, const char *buf,
+ size_t count)
+{
+ u64 rev[MLNX_MFG_VAL_QWORD_CNT(REV)] = { 0 };
+ struct arm_smccc_res res;
+ int word;
+
+ if (count > MLNX_MFG_REV_VAL_LEN)
+ return -EINVAL;
+
+ memcpy(rev, buf, count);
+
+ mutex_lock(&mfg_ops_lock);
+ for (word = 0; word < MLNX_MFG_VAL_QWORD_CNT(REV); word++) {
+ arm_smccc_smc(MLNX_HANDLE_SET_MFG_INFO,
+ MLNX_MFG_TYPE_REV + word,
+ sizeof(u64), rev[word], 0, 0, 0, 0, &res);
+ if (res.a0) {
+ mutex_unlock(&mfg_ops_lock);
+ return -EPERM;
+ }
+ }
+ mutex_unlock(&mfg_ops_lock);
+
+ return count;
+}
+
static ssize_t mfg_lock_store(struct device_driver *drv, const char *buf,
size_t count)
{
@@ -1114,6 +1167,7 @@ static DRIVER_ATTR_RW(sku);
static DRIVER_ATTR_RW(modl);
static DRIVER_ATTR_RW(sn);
static DRIVER_ATTR_RW(uuid);
+static DRIVER_ATTR_RW(rev);
static DRIVER_ATTR_WO(mfg_lock);
static DRIVER_ATTR_RW(rsh_log);
@@ -1130,6 +1184,7 @@ static struct attribute *mbc_dev_attrs[] = {
&driver_attr_modl.attr,
&driver_attr_sn.attr,
&driver_attr_uuid.attr,
+ &driver_attr_rev.attr,
&driver_attr_mfg_lock.attr,
&driver_attr_rsh_log.attr,
NULL
BugLink: https://bugs.launchpad.net/bugs/1948436 The VPD contains an EC (Engineering Changes) field to denote the HW Revision of a PN. Add support for this field in the EEPROM MFG. Signed-off-by: Shravan Kumar Ramani <shravankr@nvidia.com> --- drivers/platform/mellanox/mlx-bootctl.c | 57 ++++++++++++++++++++++++- 1 file changed, 56 insertions(+), 1 deletion(-)