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authorMichael Ellerman <mpe@ellerman.id.au>2014-08-06 11:08:22 +0200
committerMichael Ellerman <mpe@ellerman.id.au>2014-09-25 15:14:55 +0200
commit87d99c0e2c2f9d1386d8e284a5fbc13e96adbe25 (patch)
tree06fa995d12d12340b31dd32df8c7d1b2fda6ca59
parentpowerpc/ppc64: Clean up the boot-time settings display (diff)
downloadlinux-87d99c0e2c2f9d1386d8e284a5fbc13e96adbe25.tar.xz
linux-87d99c0e2c2f9d1386d8e284a5fbc13e96adbe25.zip
powerpc/ppc64: Print CPU/MMU/FW features at boot
"Helps debug funky firmware issues". After: Starting Linux PPC64 #108 SMP Wed Aug 6 19:04:51 EST 2014 ----------------------------------------------------- ppc64_pft_size = 0x1a phys_mem_size = 0x200000000 cpu_features = 0x17fc7a6c18500249 possible = 0x1fffffff18700649 always = 0x0000000000000040 cpu_user_features = 0xdc0065c2 0xee000000 mmu_features = 0x5a000001 firmware_features = 0x00000001405a440b htab_hash_mask = 0x7ffff ----------------------------------------------------- Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
-rw-r--r--arch/powerpc/kernel/setup_64.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 32f4c320b9dc..2ef9893a06bd 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -533,6 +533,14 @@ void __init setup_system(void)
if (ppc64_caches.iline_size != 0x80)
printk("icache_line_size = 0x%x\n", ppc64_caches.iline_size);
+ printk("cpu_features = 0x%016lx\n", cur_cpu_spec->cpu_features);
+ printk(" possible = 0x%016lx\n", CPU_FTRS_POSSIBLE);
+ printk(" always = 0x%016lx\n", CPU_FTRS_ALWAYS);
+ printk("cpu_user_features = 0x%08x 0x%08x\n", cur_cpu_spec->cpu_user_features,
+ cur_cpu_spec->cpu_user_features2);
+ printk("mmu_features = 0x%08x\n", cur_cpu_spec->mmu_features);
+ printk("firmware_features = 0x%016lx\n", powerpc_firmware_features);
+
#ifdef CONFIG_PPC_STD_MMU_64
if (htab_address)
printk("htab_address = 0x%p\n", htab_address);