test/py: Make the number of SPL banners seen a variable

Currently we have the option to tell the console code that we should
ignore the SPL banner. We also have an option to say that we can see it
a second time, and ignore it. However, some platforms such as TI AM64x
will have us see the SPL banner three times. Rather than add an
"spl3_skipped" option, rework the code. By default we expect to see the
banner once, but boards can specify seeing it as many times as they
expect to.

Signed-off-by: Tom Rini <trini@konsulko.com>

test/py/u_boot_console_base.py

@@ -17,7 +17,6 @@
 
 # Regexes for text we expect U-Boot to send to the console.
 pattern_u_boot_spl_signon = re.compile('(U-Boot SPL \\d{4}\\.\\d{2}[^\r\n]*\\))')
-pattern_u_boot_spl2_signon = re.compile('(U-Boot SPL \\d{4}\\.\\d{2}[^\r\n]*\\))')
 pattern_u_boot_main_signon = re.compile('(U-Boot \\d{4}\\.\\d{2}[^\r\n]*\\))')
 pattern_stop_autoboot_prompt = re.compile('Hit any key to stop autoboot: ')
 pattern_unknown_command = re.compile('Unknown command \'.*\' - try \'help\'')
@@ -29,7 +28,6 @@
 
 bad_pattern_defs = (
     ('spl_signon', pattern_u_boot_spl_signon),
-    ('spl2_signon', pattern_u_boot_spl2_signon),
     ('main_signon', pattern_u_boot_main_signon),
     ('stop_autoboot_prompt', pattern_stop_autoboot_prompt),
     ('unknown_command', pattern_unknown_command),
@@ -152,25 +150,20 @@ def wait_for_boot_prompt(self, loop_num = 1):
         """
         try:
             bcfg = self.config.buildconfig
-            config_spl = bcfg.get('config_spl', 'n') == 'y'
             config_spl_serial = bcfg.get('config_spl_serial', 'n') == 'y'
             env_spl_skipped = self.config.env.get('env__spl_skipped', False)
-            env_spl2_skipped = self.config.env.get('env__spl2_skipped', True)
+            env_spl_banner_times = self.config.env.get('env__spl_banner_times', 1)
 
             while loop_num > 0:
                 loop_num -= 1
-                if config_spl and config_spl_serial and not env_spl_skipped:
+                while config_spl_serial and not env_spl_skipped and env_spl_banner_times > 0:
                     m = self.p.expect([pattern_u_boot_spl_signon] +
                                       self.bad_patterns)
                     if m != 0:
                         raise Exception('Bad pattern found on SPL console: ' +
                                         self.bad_pattern_ids[m - 1])
-                if not env_spl2_skipped:
-                    m = self.p.expect([pattern_u_boot_spl2_signon] +
-                                      self.bad_patterns)
-                    if m != 0:
-                        raise Exception('Bad pattern found on SPL2 console: ' +
-                                        self.bad_pattern_ids[m - 1])
+                    env_spl_banner_times -= 1
+
                 m = self.p.expect([pattern_u_boot_main_signon] + self.bad_patterns)
                 if m != 0:
                     raise Exception('Bad pattern found on console: ' +