diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2006-11-27 12:10:23 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2006-12-06 10:45:39 +0900 |
| commit | 6fc21b82ef74911887ced1aff8d37ce079bb8b36 (patch) | |
| tree | 7accfcb402a530dcddb4d755f413e8098037801f /arch/sh/kernel/early_printk.c | |
| parent | 510c72ad2dd4e05e6908755f51ac89482c6eb987 (diff) | |
| download | linux-6fc21b82ef74911887ced1aff8d37ce079bb8b36.tar.bz2 | |
sh: More flexible + SH7780 earlyprintk SCIF support.
This makes the early printk support somewhat more flexible,
moving the port definition to a config option, and making the
port initialization configurable for sh-ipl+g users.
At the same time, this allows us to trivially wire up the
SH7780 SCIF0, so that's thrown in too more or less for free.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/kernel/early_printk.c')
| -rw-r--r-- | arch/sh/kernel/early_printk.c | 44 |
1 files changed, 21 insertions, 23 deletions
diff --git a/arch/sh/kernel/early_printk.c b/arch/sh/kernel/early_printk.c index a00022722e9e..60340823798a 100644 --- a/arch/sh/kernel/early_printk.c +++ b/arch/sh/kernel/early_printk.c @@ -12,7 +12,7 @@ #include <linux/console.h> #include <linux/tty.h> #include <linux/init.h> -#include <asm/io.h> +#include <linux/io.h> #ifdef CONFIG_SH_STANDARD_BIOS #include <asm/sh_bios.h> @@ -62,17 +62,9 @@ static struct console bios_console = { #include <linux/serial_core.h> #include "../../../drivers/serial/sh-sci.h" -#ifdef CONFIG_CPU_SH4 -#define SCIF_REG 0xffe80000 -#elif defined(CONFIG_CPU_SUBTYPE_SH72060) -#define SCIF_REG 0xfffe9800 -#else -#error "Undefined SCIF for this subtype" -#endif - static struct uart_port scif_port = { - .mapbase = SCIF_REG, - .membase = (char __iomem *)SCIF_REG, + .mapbase = CONFIG_EARLY_SCIF_CONSOLE_PORT, + .membase = (char __iomem *)CONFIG_EARLY_SCIF_CONSOLE_PORT, }; static void scif_sercon_putc(int c) @@ -113,23 +105,29 @@ static struct console scif_console = { .index = -1, }; +#if defined(CONFIG_CPU_SH4) && !defined(CONFIG_SH_STANDARD_BIOS) +/* + * Simple SCIF init, primarily aimed at SH7750 and other similar SH-4 + * devices that aren't using sh-ipl+g. + */ static void scif_sercon_init(int baud) { - ctrl_outw(0, SCIF_REG + 8); - ctrl_outw(0, SCIF_REG); + ctrl_outw(0, scif_port.mapbase + 8); + ctrl_outw(0, scif_port.mapbase); /* Set baud rate */ ctrl_outb((CONFIG_SH_PCLK_FREQ + 16 * baud) / - (32 * baud) - 1, SCIF_REG + 4); - - ctrl_outw(12, SCIF_REG + 24); - ctrl_outw(8, SCIF_REG + 24); - ctrl_outw(0, SCIF_REG + 32); - ctrl_outw(0x60, SCIF_REG + 16); - ctrl_outw(0, SCIF_REG + 36); - ctrl_outw(0x30, SCIF_REG + 8); + (32 * baud) - 1, scif_port.mapbase + 4); + + ctrl_outw(12, scif_port.mapbase + 24); + ctrl_outw(8, scif_port.mapbase + 24); + ctrl_outw(0, scif_port.mapbase + 32); + ctrl_outw(0x60, scif_port.mapbase + 16); + ctrl_outw(0, scif_port.mapbase + 36); + ctrl_outw(0x30, scif_port.mapbase + 8); } -#endif +#endif /* CONFIG_CPU_SH4 && !CONFIG_SH_STANDARD_BIOS */ +#endif /* CONFIG_EARLY_SCIF_CONSOLE */ /* * Setup a default console, if more than one is compiled in, rely on the @@ -168,7 +166,7 @@ int __init setup_early_printk(char *opt) if (!strncmp(buf, "serial", 6)) { early_console = &scif_console; -#ifdef CONFIG_CPU_SH4 +#if defined(CONFIG_CPU_SH4) && !defined(CONFIG_SH_STANDARD_BIOS) scif_sercon_init(115200); #endif } |