From e613d704d12592dfc371d81957a3d83b0742fa7d Mon Sep 17 00:00:00 2001
From: Kyösti Mälkki <kyosti.malkki@gmail.com>
Date: Tue, 12 Feb 2019 14:16:21 +0200
Subject: console: Split loglevel for fast and slow
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For fast CBMEM console use minimum BIOS_DEBUG level.
For other consoles, Kconfig and/or nvram settings
apply.

Change-Id: Iff56a0a3182f258200cac80e013957d598cc2130
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/31370
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
---
 src/console/init.c   | 14 +++++++++++++-
 src/console/printk.c | 22 ++++++++++++++++------
 2 files changed, 29 insertions(+), 7 deletions(-)

(limited to 'src/console')

diff --git a/src/console/init.c b/src/console/init.c
index 7d1f31a38b..b7cc43aef2 100644
--- a/src/console/init.c
+++ b/src/console/init.c
@@ -15,6 +15,7 @@
  */
 
 #include <arch/early_variables.h>
+#include <commonlib/helpers.h>
 #include <console/console.h>
 #include <console/uart.h>
 #include <console/streams.h>
@@ -64,7 +65,18 @@ static void init_log_level(void)
 
 int console_log_level(int msg_level)
 {
-	return (get_log_level() >= msg_level);
+	int log_level = get_log_level();
+
+	if (log_level < 0)
+		return CONSOLE_LOG_NONE;
+
+	if (msg_level <= log_level)
+		return CONSOLE_LOG_ALL;
+
+	if (IS_ENABLED(CONFIG_CONSOLE_CBMEM) && (msg_level <= BIOS_DEBUG))
+		return CONSOLE_LOG_FAST;
+
+	return 0;
 }
 
 asmlinkage void console_init(void)
diff --git a/src/console/printk.c b/src/console/printk.c
index 0a9d3bf8ae..6050620dca 100644
--- a/src/console/printk.c
+++ b/src/console/printk.c
@@ -17,6 +17,7 @@
  * blatantly copied from linux/kernel/printk.c
  */
 
+#include <console/cbmem_console.h>
 #include <console/console.h>
 #include <console/streams.h>
 #include <console/vtxprintf.h>
@@ -36,18 +37,24 @@ void do_putchar(unsigned char byte)
 
 static void wrap_putchar(unsigned char byte, void *data)
 {
-	do_putchar(byte);
+	console_tx_byte(byte);
+}
+
+static void wrap_putchar_cbmemc(unsigned char byte, void *data)
+{
+	__cbmemc_tx_byte(byte);
 }
 
 int vprintk(int msg_level, const char *fmt, va_list args)
 {
-	int i;
+	int i, log_this;
 
 	if (IS_ENABLED(CONFIG_SQUELCH_EARLY_SMP) && ENV_CACHE_AS_RAM &&
 		!boot_cpu())
 		return 0;
 
-	if (!console_log_level(msg_level))
+	log_this = console_log_level(msg_level);
+	if (log_this < CONSOLE_LOG_FAST)
 		return 0;
 
 	DISABLE_TRACE;
@@ -59,9 +66,12 @@ int vprintk(int msg_level, const char *fmt, va_list args)
 	spin_lock(&console_lock);
 #endif
 
-	i = vtxprintf(wrap_putchar, fmt, args, NULL);
-
-	console_tx_flush();
+	if (log_this == CONSOLE_LOG_FAST) {
+		i = vtxprintf(wrap_putchar_cbmemc, fmt, args, NULL);
+	} else {
+		i = vtxprintf(wrap_putchar, fmt, args, NULL);
+		console_tx_flush();
+	}
 
 #ifdef __PRE_RAM__
 #if IS_ENABLED(CONFIG_HAVE_ROMSTAGE_CONSOLE_SPINLOCK)
-- 
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