arch/x86: Enable postcar console
Add a Kconfig value to enable the console during postcar. Add a call to console_init at the beginning of the postcar stage in exit_car.S. TEST=Build and run on Galileo Gen2 Change-Id: I66e2ec83344129ede2c7d6e5627c8062e28f50ad Signed-off-by: Lee Leahy <leroy.p.leahy@intel.com> Reviewed-on: https://review.coreboot.org/16001 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>
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@ -26,6 +26,11 @@ stack_top:
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.text
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.global _start
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_start:
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#if IS_ENABLED(CONFIG_POSTCAR_CONSOLE)
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/* Enable the console */
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call console_init
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#endif /* CONFIG_POSTCAR_CONSOLE */
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/* chipset_teardown_car() is expected to disable cache-as-ram. */
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call chipset_teardown_car
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@ -7,6 +7,13 @@ config BOOTBLOCK_CONSOLE
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help
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Use console during the bootblock if supported
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config POSTCAR_CONSOLE
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bool "Enable console output during postcar."
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depends on POSTCAR_STAGE
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default n
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help
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Use console during the postcar if supported
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config SQUELCH_EARLY_SMP
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bool "Squelch AP CPUs from early console."
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default y
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@ -30,7 +30,7 @@ int console_log_level(int msg_level)
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return (console_loglevel >= msg_level);
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}
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void console_init(void)
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asmlinkage void console_init(void)
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{
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#if !defined(__PRE_RAM__)
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console_loglevel = CONFIG_DEFAULT_CONSOLE_LOGLEVEL;
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@ -18,6 +18,7 @@
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#include <stdint.h>
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#include <rules.h>
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#include <arch/cpu.h>
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#include <console/post_codes.h>
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#include <commonlib/loglevel.h>
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@ -51,7 +52,7 @@ void __attribute__ ((noreturn)) die(const char *msg);
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(ENV_SMM && CONFIG_DEBUG_SMI))
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#if __CONSOLE_ENABLE__
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void console_init(void);
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asmlinkage void console_init(void);
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int console_log_level(int msg_level);
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int do_printk(int msg_level, const char *fmt, ...) __attribute__((format(printf, 2, 3)));
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void do_putchar(unsigned char byte);
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