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console/cbmem: Add cbmem_dump_console 

This function is similar to cbmem_dump_console_to_uart except it uses
the normally configured consoles. A console_paused flag was added to
prevent the cbmem console from writing to itself.

BUG=b:213828947
TEST=Boot guybrush

Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: I3fe0f666e2e15c88b4568377923ad447c3ecf27e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61011
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
This commit is contained in:
Raul E Rangel 2022-01-11 12:48:50 -07:00 committed by Felix Held
parent 2abb826312
commit bf993110b3
2 changed files with 24 additions and 1 deletions
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1
src/include/console/cbmem_console.h
View File

@ -20,4 +20,5 @@ static inline void __cbmemc_tx_byte(u8 data) {}
#endif
void cbmem_dump_console_to_uart(void);
void cbmem_dump_console(void);
#endif

24
src/lib/cbmem_console.c
View File

@ -1,9 +1,11 @@
/* SPDX-License-Identifier: GPL-2.0-only */
#include <console/cbmem_console.h>
#include <console/console.h>
#include <console/uart.h>
#include <cbmem.h>
#include <symbols.h>
#include <types.h>
/*
* Structure describing console buffer. It is overlaid on a flat memory area,
@ -37,6 +39,8 @@ _Static_assert(CONFIG_CONSOLE_CBMEM_BUFFER_SIZE <= MAX_SIZE,
static struct cbmem_console *current_console;
static bool console_paused;
/*
* While running from ROM, before DRAM is initialized, some area in cache as
* RAM space is used for the console buffer storage. The size and location of
@ -88,7 +92,7 @@ void cbmemc_init(void)
void cbmemc_tx_byte(unsigned char data)
{
if (!current_console || !current_console->size)
if (!current_console || !current_console->size || console_paused)
return;
u32 flags = current_console->cursor & ~CURSOR_MASK;
@ -169,3 +173,21 @@ void cbmem_dump_console_to_uart(void)
uart_tx_byte(0, current_console->body[cursor]);
}
#endif
void cbmem_dump_console(void)
{
u32 cursor;
if (!current_console)
return;
console_paused = true;
if (current_console->cursor & OVERFLOW)
for (cursor = current_console->cursor & CURSOR_MASK;
cursor < current_console->size; cursor++)
do_putchar(current_console->body[cursor]);
for (cursor = 0; cursor < (current_console->cursor & CURSOR_MASK); cursor++)
do_putchar(current_console->body[cursor]);
console_paused = false;
}