Commit d503187b authored by Leif Lindholm's avatar Leif Lindholm Committed by Greg Kroah-Hartman
Browse files

of/serial: move earlycon early_param handling to serial 



We have multiple "earlycon" early_param handlers - merge the DT one into
the main earlycon one.  It's a cleanup that also will be useful
to defer setting up DT console until ACPI/DT decision is made.

Rename the exported function to avoid clashing with the function from
arch/microblaze/kernel/prom.c

Signed-off-by: default avatarLeif Lindholm <leif.lindholm@linaro.org>
Signed-off-by: default avatarAleksey Makarov <aleksey.makarov@linaro.org>
Acked-by: default avatarRob Herring <robh@kernel.org>
Acked-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: default avatarPeter Hurley <peter@hurleysoftware.com>
Tested-by: default avatarKefeng Wang <wangkefeng.wang@huawei.com>
Tested-by: default avatarChristopher Covington <cov@codeaurora.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 094a3262

drivers/of/fdt.c

+1 −10
Original line number Diff line number Diff line
@@ -924,7 +924,7 @@ static inline void early_init_dt_check_for_initrd(unsigned long node) 


#ifdef CONFIG_SERIAL_EARLYCON



static int __init early_init_dt_scan_chosen_serial(void)

int __init early_init_dt_scan_chosen_stdout(void)

{

	int offset;

	const char *p, *q, *options = NULL;
@@ -968,15 +968,6 @@ static int __init early_init_dt_scan_chosen_serial(void) 
	}

	return -ENODEV;

}



static int __init setup_of_earlycon(char *buf)

{

	if (buf)

		return 0;



	return early_init_dt_scan_chosen_serial();

}

early_param("earlycon", setup_of_earlycon);

#endif



/**

drivers/tty/serial/earlycon.c

+1 −1
Original line number Diff line number Diff line
@@ -208,7 +208,7 @@ static int __init param_setup_earlycon(char *buf) 
	 * don't generate a warning from parse_early_params() in that case

	 */

	if (!buf || !buf[0])

		return 0;

		return early_init_dt_scan_chosen_stdout();



	err = setup_earlycon(buf);

	if (err == -ENOENT || err == -EALREADY)

include/linux/of_fdt.h

+3 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 


#include <linux/types.h>

#include <linux/init.h>

#include <linux/errno.h>



/* Definitions used by the flattened device tree */

#define OF_DT_HEADER		0xd00dfeed	/* marker */
@@ -66,6 +67,7 @@ extern int early_init_dt_scan_chosen(unsigned long node, const char *uname, 
				     int depth, void *data);

extern int early_init_dt_scan_memory(unsigned long node, const char *uname,

				     int depth, void *data);

extern int early_init_dt_scan_chosen_stdout(void);

extern void early_init_fdt_scan_reserved_mem(void);

extern void early_init_fdt_reserve_self(void);

extern void early_init_dt_add_memory_arch(u64 base, u64 size);
@@ -94,6 +96,7 @@ extern void early_get_first_memblock_info(void *, phys_addr_t *); 
extern u64 of_flat_dt_translate_address(unsigned long node);

extern void of_fdt_limit_memory(int limit);

#else /* CONFIG_OF_FLATTREE */

static inline int early_init_dt_scan_chosen_stdout(void) { return -ENODEV; }

static inline void early_init_fdt_scan_reserved_mem(void) {}

static inline void early_init_fdt_reserve_self(void) {}

static inline const char *of_flat_dt_get_machine_name(void) { return NULL; }

CRA Git | Maintained and supported by SUSTech CRA and CCSE