hv: shell: add cpuid command

Add cpuid shell command for test

Signed-off-by: Li, Fei1 <fei1.li@intel.com>

Author: lifeix

hypervisor/debug/shell_internal.c

@@ -1040,6 +1040,34 @@ int shell_set_loglevel(struct shell *p_shell, int argc, char **argv)
 	return status;
 }
 
+int shell_cpuid(struct shell *p_shell, int argc, char **argv)
+{
+	char str[MAX_STR_SIZE] = {0};
+	uint32_t leaf, subleaf = 0;
+	uint32_t eax, ebx, ecx, edx;
+
+	if (argc == 2) {
+		leaf = strtoul(argv[1], NULL, 16);
+	} else if (argc == 3) {
+		leaf = strtoul(argv[1], NULL, 16);
+		subleaf = strtoul(argv[2], NULL, 16);
+	} else {
+		shell_puts(p_shell,
+			"Please enter correct cmd with "
+			"cpuid <leaf> [subleaf]\r\n");
+		return -EINVAL;
+	}
+
+	cpuid_subleaf(leaf, subleaf, &eax, &ebx, &ecx, &edx);
+	snprintf(str, MAX_STR_SIZE,
+		"cpuid leaf: 0x%x, subleaf: 0x%x, 0x%x:0x%x:0x%x:0x%x\r\n",
+		leaf, subleaf, eax, ebx, ecx, edx);
+
+	shell_puts(p_shell, str);
+
+	return 0;
+}
+
 int shell_terminate_serial(struct shell *p_shell)
 {
 	/* Shell shouldn't own the serial port handle anymore. */

hypervisor/debug/shell_internal.h

@@ -149,6 +149,10 @@ struct shell_cmd {
 #define SHELL_CMD_SET_LOG_LVL_PARAM	"<console_loglevel> [mem_loglevel]"
 #define SHELL_CMD_SET_LOG_LVL_HELP	"Set loglevel [0-6]"
 
+#define SHELL_CMD_CPUID			"cpuid"
+#define SHELL_CMD_CPUID_PARAM		"<leaf> [subleaf]"
+#define SHELL_CMD_CPUID_HELP		"cpuid leaf [subleaf], in hexadecimal"
+
 
 /* Global function prototypes */
 int shell_show_req_info(struct shell *p_shell, int argc, char **argv);
@@ -172,6 +176,7 @@ int shell_show_vmexit_profile(struct shell *p_shell, int argc, char **argv);
 int shell_dump_logbuf(struct shell *p_shell, int argc, char **argv);
 int shell_get_loglevel(struct shell *p_shell, int argc, char **argv);
 int shell_set_loglevel(struct shell *p_shell, int argc, char **argv);
+int shell_cpuid(struct shell *p_shell, int argc, char **argv);
 struct shell_cmd *shell_find_cmd(struct shell *p_shell, const char *cmd);
 int shell_process_cmd(struct shell *p_shell, char *p_input_line);
 int shell_terminate_serial(struct shell *p_shell);

hypervisor/debug/shell_public.c

@@ -356,6 +356,17 @@ int shell_init(void)
 			pr_err("Error: Command \"%s\" registration failed.",
 				SHELL_CMD_SET_LOG_LVL);
 		}
+
+		status = shell_register_cmd(serial_session,
+					SHELL_CMD_CPUID,
+					SHELL_CMD_CPUID_PARAM,
+					SHELL_CMD_CPUID_HELP,
+					shell_cpuid);
+
+		if (status != 0) {
+			pr_err("Error: Command \"%s\" registration failed.",
+				SHELL_CMD_CPUID);
+		}
 	}
 
 	return status;