powerpc/64: Add logical PVR to the hardware description

If we detect a logical PVR add that to the hardware description, which
is printed at boot and in case of an oops.

eg: Hardware name: ... 0xf000004

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220930082709.55830-3-mpe@ellerman.id.au

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 09f07cc..83fc722 100644 (file)
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -390,8 +390,10 @@ static int __init early_init_dt_scan_cpus(unsigned long node,
         */
        if (!dt_cpu_ftrs_in_use()) {
                prop = of_get_flat_dt_prop(node, "cpu-version", NULL);
-               if (prop && (be32_to_cpup(prop) & 0xff000000) == 0x0f000000)
+               if (prop && (be32_to_cpup(prop) & 0xff000000) == 0x0f000000) {
                        identify_cpu(0, be32_to_cpup(prop));
+                       seq_buf_printf(&ppc_hw_desc, "0x%04x ", be32_to_cpup(prop));
+               }
 
                check_cpu_feature_properties(node);
                check_cpu_features(node, "ibm,pa-features", ibm_pa_features,