Unverified Commit 358f3fff authored by Palmer Dabbelt's avatar Palmer Dabbelt
Browse files

RISC-V: Move from EARLY_PRINTK to SBI earlycon 

Now that we have earlycon support in the SBI console driver there is no
reason to have our arch-specific early printk support.  This patch set
turns on SBI earlycon support and removes the old early printk.
parents 3aed8c43 7ba12bb6

arch/riscv/Kconfig.debug

+0 −2
Original line number Diff line number Diff line 
config EARLY_PRINTK

	def_bool y

arch/riscv/configs/defconfig

+1 −0
Original line number Diff line number Diff line
@@ -46,6 +46,7 @@ CONFIG_INPUT_MOUSEDEV=y 
CONFIG_SERIAL_8250=y

CONFIG_SERIAL_8250_CONSOLE=y

CONFIG_SERIAL_OF_PLATFORM=y

CONFIG_SERIAL_EARLYCON_RISCV_SBI=y

CONFIG_HVC_RISCV_SBI=y

# CONFIG_PTP_1588_CLOCK is not set

CONFIG_DRM=y

arch/riscv/kernel/setup.c

+0 −28
Original line number Diff line number Diff line
@@ -35,31 +35,9 @@ 
#include <asm/sections.h>

#include <asm/pgtable.h>

#include <asm/smp.h>

#include <asm/sbi.h>

#include <asm/tlbflush.h>

#include <asm/thread_info.h>



#ifdef CONFIG_EARLY_PRINTK

static void sbi_console_write(struct console *co, const char *buf,

			      unsigned int n)

{

	int i;



	for (i = 0; i < n; ++i) {

		if (buf[i] == '\n')

			sbi_console_putchar('\r');

		sbi_console_putchar(buf[i]);

	}

}



struct console riscv_sbi_early_console_dev __initdata = {

	.name	= "early",

	.write	= sbi_console_write,

	.flags	= CON_PRINTBUFFER | CON_BOOT | CON_ANYTIME,

	.index	= -1

};

#endif



#ifdef CONFIG_DUMMY_CONSOLE

struct screen_info screen_info = {

	.orig_video_lines	= 30,
@@ -219,12 +197,6 @@ static void __init setup_bootmem(void) 


void __init setup_arch(char **cmdline_p)

{

#if defined(CONFIG_EARLY_PRINTK)

       if (likely(early_console == NULL)) {

               early_console = &riscv_sbi_early_console_dev;

               register_console(early_console);

       }

#endif

	*cmdline_p = boot_command_line;



	parse_early_param();