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Commit aa6476f7 authored by Max Filippov's avatar Max Filippov
Browse files

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: default avatarMax Filippov <jcmvbkbc@gmail.com>
parent f4431396

arch/xtensa/kernel/setup.c

+9 −0
Original line number Diff line number Diff line
@@ -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,