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authorMax Filippov <jcmvbkbc@gmail.com>2017-08-08 14:06:14 -0700
committerMax Filippov <jcmvbkbc@gmail.com>2017-12-10 16:19:28 -0800
commitaa6476f76c1678d5d1087b39d3047601f0139ef0 (patch)
tree6933cc8650445de1d1ef507db339143c677109ac /arch/xtensa
parentf4431396be5b26a9960daf502d129b1b5d126f5e (diff)
downloadblackbird-op-linux-aa6476f76c1678d5d1087b39d3047601f0139ef0.tar.gz
blackbird-op-linux-aa6476f76c1678d5d1087b39d3047601f0139ef0.zip
xtensa: print hardware config ID on startup
Print hardware config ID on startup and config ID recorded in the configuration if it doesn't match one read from the hardware. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa')
-rw-r--r--arch/xtensa/kernel/setup.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/xtensa/kernel/setup.c b/arch/xtensa/kernel/setup.c
index 253a0178f1bd..3732c91b7200 100644
--- a/arch/xtensa/kernel/setup.c
+++ b/arch/xtensa/kernel/setup.c
@@ -317,6 +317,13 @@ static inline int mem_reserve(unsigned long start, unsigned long end)
void __init setup_arch(char **cmdline_p)
{
+ pr_info("config ID: %08x:%08x\n",
+ get_sr(SREG_EPC), get_sr(SREG_EXCSAVE));
+ if (get_sr(SREG_EPC) != XCHAL_HW_CONFIGID0 ||
+ get_sr(SREG_EXCSAVE) != XCHAL_HW_CONFIGID1)
+ pr_info("built for config ID: %08x:%08x\n",
+ XCHAL_HW_CONFIGID0, XCHAL_HW_CONFIGID1);
+
*cmdline_p = command_line;
platform_setup(cmdline_p);
strlcpy(boot_command_line, *cmdline_p, COMMAND_LINE_SIZE);
@@ -582,12 +589,14 @@ c_show(struct seq_file *f, void *slot)
"model\t\t: Xtensa " XCHAL_HW_VERSION_NAME "\n"
"core ID\t\t: " XCHAL_CORE_ID "\n"
"build ID\t: 0x%x\n"
+ "config ID\t: %08x:%08x\n"
"byte order\t: %s\n"
"cpu MHz\t\t: %lu.%02lu\n"
"bogomips\t: %lu.%02lu\n",
num_online_cpus(),
cpumask_pr_args(cpu_online_mask),
XCHAL_BUILD_UNIQUE_ID,
+ get_sr(SREG_EPC), get_sr(SREG_EXCSAVE),
XCHAL_HAVE_BE ? "big" : "little",
ccount_freq/1000000,
(ccount_freq/10000) % 100,
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