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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.
This commit is contained in:
Palmer Dabbelt 2018-12-21 08:15:39 -08:00
parent 3aed8c4326 7ba12bb676
commit 358f3fff52
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GPG Key ID: EF4CA1502CCBAB41
3 changed files with 1 additions and 30 deletions
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2
arch/riscv/Kconfig.debug
View File

@ -1,2 +0,0 @@
config EARLY_PRINTK
def_bool y

1
arch/riscv/configs/defconfig
View File

@ -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

28
arch/riscv/kernel/setup.c
View File

@ -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();