The secure boot state of the BlueField SoC is represented by two bits:
0 = production state
1 = secure boot enabled
2 = non-secure (secure boot disabled)
3 = RMA state
There is also a single bit to indicate whether production keys or
development keys are being used when secure boot is enabled.
The current logic in "lifecycle_state_show()" does not handle the case
where the SoC is configured for secure boot and is using development
keys. This patch updates the logic in "lifecycle_state_show()" to
support this combination and properly report this state.
Fixes: 79e29cb8fbc5c ("platform/mellanox: Add bootctl driver for Mellanox BlueField Soc")
Reviewed-by: Khalil Blaiech <kblaiech@xxxxxxxxxx>
Signed-off-by: David Thompson <davthompson@xxxxxxxxxx>
---
v1->v2
a) commit message was expanded and re-worded for clarity
b) replaced use of hardcoded 0x10 with BIT(4) for MLXBF_BOOTCTL_SB_DEV_MASK
---
drivers/platform/mellanox/mlxbf-bootctl.c | 24 +++++++++++++++++------
1 file changed, 18 insertions(+), 6 deletions(-)
diff --git a/drivers/platform/mellanox/mlxbf-bootctl.c b/drivers/platform/mellanox/mlxbf-bootctl.c
index 1ac7dab22c63..13c62a97a6f7 100644
--- a/drivers/platform/mellanox/mlxbf-bootctl.c
+++ b/drivers/platform/mellanox/mlxbf-bootctl.c
@@ -20,6 +20,7 @@
#define MLXBF_BOOTCTL_SB_SECURE_MASK 0x03
#define MLXBF_BOOTCTL_SB_TEST_MASK 0x0c
+#define MLXBF_BOOTCTL_SB_DEV_MASK BIT(4)
#define MLXBF_SB_KEY_NUM 4
@@ -40,11 +41,18 @@ static struct mlxbf_bootctl_name boot_names[] = {
{ MLXBF_BOOTCTL_NONE, "none" },
};
+enum {
+ MLXBF_BOOTCTL_SB_LIFECYCLE_PRODUCTION = 0,
+ MLXBF_BOOTCTL_SB_LIFECYCLE_GA_SECURE = 1,
+ MLXBF_BOOTCTL_SB_LIFECYCLE_GA_NON_SECURE = 2,
+ MLXBF_BOOTCTL_SB_LIFECYCLE_RMA = 3
+};
+
static const char * const mlxbf_bootctl_lifecycle_states[] = {
- [0] = "Production",
- [1] = "GA Secured",
- [2] = "GA Non-Secured",
- [3] = "RMA",
+ [MLXBF_BOOTCTL_SB_LIFECYCLE_PRODUCTION] = "Production",
+ [MLXBF_BOOTCTL_SB_LIFECYCLE_GA_SECURE] = "GA Secured",
+ [MLXBF_BOOTCTL_SB_LIFECYCLE_GA_NON_SECURE] = "GA Non-Secured",
+ [MLXBF_BOOTCTL_SB_LIFECYCLE_RMA] = "RMA",
};
/* Log header format. */
@@ -254,8 +262,9 @@ static ssize_t lifecycle_state_show(struct device *dev,
if (lc_state < 0)
return lc_state;
- lc_state &=
- MLXBF_BOOTCTL_SB_TEST_MASK | MLXBF_BOOTCTL_SB_SECURE_MASK;
+ lc_state &= (MLXBF_BOOTCTL_SB_TEST_MASK |
+ MLXBF_BOOTCTL_SB_SECURE_MASK |
+ MLXBF_BOOTCTL_SB_DEV_MASK);
/*
* If the test bits are set, we specify that the current state may be
@@ -266,6 +275,9 @@ static ssize_t lifecycle_state_show(struct device *dev,
return sprintf(buf, "%s(test)\n",
mlxbf_bootctl_lifecycle_states[lc_state]);
+ } else if ((lc_state & MLXBF_BOOTCTL_SB_SECURE_MASK) == MLXBF_BOOTCTL_SB_LIFECYCLE_GA_SECURE
+ && (lc_state & MLXBF_BOOTCTL_SB_DEV_MASK)) {
+ return sprintf(buf, "Secured (development)\n");
}
return sprintf(buf, "%s\n", mlxbf_bootctl_lifecycle_states[lc_state]);
--
2.30.1
