Messages in this thread Patch in this message | | | From | Nayna Jain <> | Subject | [PATCH] powerpc/pseries: detect secure and trusted boot state of the system. | Date | Sat, 4 Jul 2020 13:08:55 -0400 |
| |
The device-tree property to check secure and trusted boot state is different for guests(pseries) compared to baremetal(powernv).
This patch updates the existing is_ppc_secureboot_enabled() and is_ppc_trustedboot_enabled() function to add support for pseries.
Signed-off-by: Nayna Jain <nayna@linux.ibm.com> --- arch/powerpc/kernel/secure_boot.c | 31 +++++++++++++++++++++++++------ 1 file changed, 25 insertions(+), 6 deletions(-)
diff --git a/arch/powerpc/kernel/secure_boot.c b/arch/powerpc/kernel/secure_boot.c index 4b982324d368..43fc6607c7a5 100644 --- a/arch/powerpc/kernel/secure_boot.c +++ b/arch/powerpc/kernel/secure_boot.c @@ -6,6 +6,7 @@ #include <linux/types.h> #include <linux/of.h> #include <asm/secure_boot.h> +#include <asm/machdep.h> static struct device_node *get_ppc_fw_sb_node(void) { @@ -23,11 +24,20 @@ bool is_ppc_secureboot_enabled(void) { struct device_node *node; bool enabled = false; + const u32 *secureboot; - node = get_ppc_fw_sb_node(); - enabled = of_property_read_bool(node, "os-secureboot-enforcing"); + if (machine_is(powernv)) { + node = get_ppc_fw_sb_node(); + enabled = + of_property_read_bool(node, "os-secureboot-enforcing"); + of_node_put(node); + } - of_node_put(node); + if (machine_is(pseries)) { + secureboot = of_get_property(of_root, "ibm,secure-boot", NULL); + if (secureboot) + enabled = (*secureboot > 1) ? true : false; + } pr_info("Secure boot mode %s\n", enabled ? "enabled" : "disabled"); @@ -38,11 +48,20 @@ bool is_ppc_trustedboot_enabled(void) { struct device_node *node; bool enabled = false; + const u32 *trustedboot; - node = get_ppc_fw_sb_node(); - enabled = of_property_read_bool(node, "trusted-enabled"); + if (machine_is(powernv)) { + node = get_ppc_fw_sb_node(); + enabled = of_property_read_bool(node, "trusted-enabled"); + of_node_put(node); + } - of_node_put(node); + if (machine_is(pseries)) { + trustedboot = + of_get_property(of_root, "ibm,trusted-boot", NULL); + if (trustedboot) + enabled = (*trustedboot > 0) ? true : false; + } pr_info("Trusted boot mode %s\n", enabled ? "enabled" : "disabled"); -- 2.18.1
| |