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authorPalmer Dabbelt <palmer@sifive.com>2018-12-21 19:15:39 +0300
committerPalmer Dabbelt <palmer@sifive.com>2018-12-21 19:15:39 +0300
commit358f3fff5271629f26261dadff73a9f8484aee12 (patch)
treefce342a1515854bf12cc21b8651d36d4782aaa95 /arch/riscv
parent3aed8c43267ebad70b5130d21155db6d9d7c8ebe (diff)
parent7ba12bb676c2f7848a53224f9a65c6ef256bb3b6 (diff)
downloadlinux-358f3fff5271629f26261dadff73a9f8484aee12.tar.xz
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.
Diffstat (limited to 'arch/riscv')
-rw-r--r--arch/riscv/Kconfig.debug2
-rw-r--r--arch/riscv/configs/defconfig1
-rw-r--r--arch/riscv/kernel/setup.c28
3 files changed, 1 insertions, 30 deletions
diff --git a/arch/riscv/Kconfig.debug b/arch/riscv/Kconfig.debug
index c5a72f17c469..e69de29bb2d1 100644
--- a/arch/riscv/Kconfig.debug
+++ b/arch/riscv/Kconfig.debug
@@ -1,2 +0,0 @@
-config EARLY_PRINTK
- def_bool y
diff --git a/arch/riscv/configs/defconfig b/arch/riscv/configs/defconfig
index ef4f15df9adf..f399659d3b8d 100644
--- a/arch/riscv/configs/defconfig
+++ b/arch/riscv/configs/defconfig
@@ -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
diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
index 2c290e6aaa6e..fc8006a042eb 100644
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
@@ -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();