ARM: Separate the early console (romstage) from the bootblock console.

It might be that you want an early console in romstage before RAM is up, but
you can't or don't want to support the console all the way back in the
bootblock. By making the console in those two different environments
configurable seperately that becomes possible.

On the 5250 console output as early as the bootblock works, but on the 5420 it
only starts working in the ROM stage after clocks have been initialized.

Change-Id: I68ae3fcb4d828fa8a328a30001c23c81a4423bb8
Signed-off-by: Gabe Black <gabeblack@chromium.org>
Reviewed-on: http://review.coreboot.org/3671
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
Gabe Black 2013-06-06 00:21:20 -07:00 committed by Stefan Reinauer
parent c2c4f84644
commit fbb11cf979
10 changed files with 31 additions and 18 deletions

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@ -163,7 +163,7 @@ $(obj)/mainboard/$(MAINBOARDDIR)/romstage.pre.inc: $(src)/mainboard/$(MAINBOARDD
ramstage-y += exception.c
ramstage-y += exception_asm.S
bootblock-$(CONFIG_EARLY_CONSOLE) += early_console.c
bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += early_console.c
bootblock-y += cache.c
romstage-y += cache.c

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@ -68,7 +68,7 @@ void main(void)
bootblock_mainboard_init();
}
#ifdef CONFIG_EARLY_CONSOLE
#ifdef CONFIG_BOOTBLOCK_CONSOLE
console_init();
#endif

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@ -1,5 +1,15 @@
menu "Console"
config DEFAULT_BOOTBLOCK_CONSOLE
bool
default n
config BOOTBLOCK_CONSOLE
bool "Enable early (bootblock) console output."
default DEFAULT_BOOTBLOCK_CONSOLE
help
Use console during the bootblock if supported
config DEFAULT_EARLY_CONSOLE
bool
default n

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@ -14,7 +14,7 @@ romstage-y += console.c
romstage-y += post.c
romstage-y += die.c
bootblock-$(CONFIG_EARLY_CONSOLE) += vtxprintf.c
bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += vtxprintf.c
bootblock-y += console.c
bootblock-y += die.c

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@ -101,7 +101,8 @@ int console_tst_byte(void)
void console_init(void)
{
#if CONFIG_EARLY_CONSOLE
#if defined(__BOOT_BLOCK__) && CONFIG_BOOTBLOCK_CONSOLE || \
!defined(__BOOT_BLOCK__) && CONFIG_EARLY_CONSOLE
#if CONFIG_USBDEBUG
enable_usbdebug(CONFIG_USBDEBUG_DEFAULT_PORT);

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@ -2,6 +2,7 @@ config CPU_SAMSUNG_EXYNOS5250
depends on ARCH_ARMV7
select HAVE_MONOTONIC_TIMER
select HAVE_UART_SPECIAL
select DEFAULT_BOOTBLOCK_CONSOLE
select DEFAULT_EARLY_CONSOLE
bool
default n

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@ -6,14 +6,14 @@ INTERMEDIATE += exynos5250_add_bl1
bootblock-y += spi.c
bootblock-y += pinmux.c mct.c power.c
# Clock is required for UART
bootblock-$(CONFIG_EARLY_CONSOLE) += clock_init.c
bootblock-$(CONFIG_EARLY_CONSOLE) += clock.c
bootblock-$(CONFIG_EARLY_CONSOLE) += monotonic_timer.c
bootblock-$(CONFIG_EARLY_CONSOLE) += uart.c
bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += clock_init.c
bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += clock.c
bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += monotonic_timer.c
bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += uart.c
bootblock-y += wakeup.c
bootblock-y += gpio.c
bootblock-$(CONFIG_EARLY_CONSOLE) += pwm.c
bootblock-$(CONFIG_EARLY_CONSOLE) += timer.c
bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += pwm.c
bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += timer.c
romstage-y += spi.c
romstage-y += clock.c

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@ -6,14 +6,14 @@ INTERMEDIATE += exynos5420_add_bl1
bootblock-y += spi.c
bootblock-y += pinmux.c mct.c power.c
# Clock is required for UART
bootblock-$(CONFIG_EARLY_CONSOLE) += clock_init.c
bootblock-$(CONFIG_EARLY_CONSOLE) += clock.c
bootblock-$(CONFIG_EARLY_CONSOLE) += monotonic_timer.c
bootblock-$(CONFIG_EARLY_CONSOLE) += uart.c
bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += clock_init.c
bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += clock.c
bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += monotonic_timer.c
bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += uart.c
bootblock-y += wakeup.c
bootblock-y += gpio.c
bootblock-$(CONFIG_EARLY_CONSOLE) += pwm.c
bootblock-$(CONFIG_EARLY_CONSOLE) += timer.c
bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += pwm.c
bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += timer.c
romstage-y += spi.c
romstage-y += clock.c

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@ -77,7 +77,8 @@ void mainboard_post(u8 value);
void __attribute__ ((noreturn)) die(const char *msg);
int do_printk(int msg_level, const char *fmt, ...) __attribute__((format(printf, 2, 3)));
#if defined(__PRE_RAM__) && !CONFIG_EARLY_CONSOLE
#if defined(__BOOT_BLOCK__) && !CONFIG_BOOTBLOCK_CONSOLE || \
(defined(__PRE_RAM__) && !defined(__BOOT_BLOCK__)) && !CONFIG_EARLY_CONSOLE
static inline void printk(int LEVEL, const char *fmt, ...);
static inline void printk(int LEVEL, const char *fmt, ...) {

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@ -22,6 +22,6 @@ bootblock-y += timer.c
romstage-y += timer.c
ramstage-y += timer.c
bootblock-$(CONFIG_EARLY_CONSOLE) += uart.c
bootblock-$(CONFIG_BOOTBLOCK_CONSOLE) += uart.c
romstage-$(CONFIG_EARLY_CONSOLE) += uart.c
ramstage-y += uart.c