m68k: early parameter support
Add early parameter support and convert current users to it.
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/arch/m68k/q40/config.c b/arch/m68k/q40/config.c
index 4c5b9e4..476e18e 100644
--- a/arch/m68k/q40/config.c
+++ b/arch/m68k/q40/config.c
@@ -54,7 +54,6 @@
extern void q40_mksound(unsigned int /*freq*/, unsigned int /*ticks*/);
-extern char m68k_debug_device[];
static void q40_mem_console_write(struct console *co, const char *b,
unsigned int count);
@@ -62,6 +61,7 @@
static struct console q40_console_driver = {
.name = "debug",
+ .write = q40_mem_console_write,
.flags = CON_PRINTBUFFER,
.index = -1,
};
@@ -85,6 +85,19 @@
}
}
+static int __init q40_debug_setup(char *arg)
+{
+ /* useful for early debugging stages - writes kernel messages into SRAM */
+ if (MACH_IS_Q40 && !strncmp(arg, "mem", 3)) {
+ /*printk("using NVRAM debug, q40_mem_cptr=%p\n",q40_mem_cptr);*/
+ _cpleft = 2000 - ((long)q40_mem_cptr-0xff020000) / 4;
+ register_console(&q40_console_driver);
+ }
+ return 0;
+}
+
+early_param("debug", q40_debug_setup);
+
#if 0
void printq40(char *str)
{
@@ -194,14 +207,6 @@
* all physical RAM fits into the boundary - otherwise
* allocator may play costly and useless tricks */
mach_max_dma_address = 1024*1024*1024;
-
- /* useful for early debugging stages - writes kernel messages into SRAM */
- if (!strncmp( m68k_debug_device,"mem", 3)) {
- /*printk("using NVRAM debug, q40_mem_cptr=%p\n",q40_mem_cptr);*/
- _cpleft = 2000 - ((long)q40_mem_cptr-0xff020000) / 4;
- q40_console_driver.write = q40_mem_console_write;
- register_console(&q40_console_driver);
- }
}