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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 18:50:03 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-18 18:50:03 +0000
commit01a69402cf9d38ff180345d55c2ee51c7e89fbc7 (patch)
treeb406c5242a088c4f59c6e4b719b783f43aca6ae9 /drivers/tty/serial/earlycon-riscv-sbi.c
parentAdding upstream version 6.7.12. (diff)
downloadlinux-01a69402cf9d38ff180345d55c2ee51c7e89fbc7.tar.xz
linux-01a69402cf9d38ff180345d55c2ee51c7e89fbc7.zip
Adding upstream version 6.8.9.upstream/6.8.9
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/tty/serial/earlycon-riscv-sbi.c')
-rw-r--r--drivers/tty/serial/earlycon-riscv-sbi.c27
1 files changed, 24 insertions, 3 deletions
diff --git a/drivers/tty/serial/earlycon-riscv-sbi.c b/drivers/tty/serial/earlycon-riscv-sbi.c
index 27afb0b74e..0162155f0c 100644
--- a/drivers/tty/serial/earlycon-riscv-sbi.c
+++ b/drivers/tty/serial/earlycon-riscv-sbi.c
@@ -15,17 +15,38 @@ static void sbi_putc(struct uart_port *port, unsigned char c)
sbi_console_putchar(c);
}
-static void sbi_console_write(struct console *con,
- const char *s, unsigned n)
+static void sbi_0_1_console_write(struct console *con,
+ const char *s, unsigned int n)
{
struct earlycon_device *dev = con->data;
uart_console_write(&dev->port, s, n, sbi_putc);
}
+static void sbi_dbcn_console_write(struct console *con,
+ const char *s, unsigned int n)
+{
+ int ret;
+
+ while (n) {
+ ret = sbi_debug_console_write(s, n);
+ if (ret < 0)
+ break;
+
+ s += ret;
+ n -= ret;
+ }
+}
+
static int __init early_sbi_setup(struct earlycon_device *device,
const char *opt)
{
- device->con->write = sbi_console_write;
+ if (sbi_debug_console_available)
+ device->con->write = sbi_dbcn_console_write;
+ else if (IS_ENABLED(CONFIG_RISCV_SBI_V01))
+ device->con->write = sbi_0_1_console_write;
+ else
+ return -ENODEV;
+
return 0;
}
EARLYCON_DECLARE(sbi, early_sbi_setup);