On Fri, 15 Jan 2021, Sam Creasey wrote:
Honestly, it probably doesn't boot. The last kernel I knew to boot
successfully was 2.6.16, and that required patches.
Here's a patch that might help with debugging. It enables the
'earlyprintk' kernel parameter for Sun 3. (Sun 3x builds already support
that and don't need this patch.)
Note that this patch is untested and may make things worse. I have a few
more Sun 3 patches that need testing (refactoring of DMA code in NCR5380).
diff --git a/arch/m68k/Kconfig.debug b/arch/m68k/Kconfig.debug
index 11b306bdd788..cf3f8442c839 100644
--- a/arch/m68k/Kconfig.debug
+++ b/arch/m68k/Kconfig.debug
@@ -10,7 +10,7 @@ config BOOTPARAM_STRING
config EARLY_PRINTK
bool "Early printk"
- depends on !(SUN3 || M68000 || COLDFIRE)
+ depends on !(M68000 || COLDFIRE)
help
Write kernel log output directly to a serial port.
Where implemented, output goes to the framebuffer as well.
diff --git a/arch/m68k/kernel/early_printk.c b/arch/m68k/kernel/early_printk.c
index 7d3fe08a48eb..4b06fb32298a 100644
--- a/arch/m68k/kernel/early_printk.c
+++ b/arch/m68k/kernel/early_printk.c
@@ -11,6 +11,9 @@
#include <linux/init.h>
#include <linux/string.h>
#include <asm/setup.h>
+#ifdef CONFIG_SUN3
+#include <asm/oplib.h>
+#endif
extern void mvme16x_cons_write(struct console *co,
const char *str, unsigned count);
@@ -20,8 +23,14 @@ asmlinkage void __init debug_cons_nputs(const char *s, unsigned n);
static void __ref debug_cons_write(struct console *c,
const char *s, unsigned n)
{
-#if !(defined(CONFIG_SUN3) || defined(CONFIG_M68000) || \
- defined(CONFIG_COLDFIRE))
+#if defined(CONFIG_SUN3)
+ while (n-- && *s) {
+ if (*s == '\n')
+ prom_putchar('\r');
+ prom_putchar(*s);
+ s++;
+ }
+#elif !(defined(CONFIG_M68000) || defined(CONFIG_COLDFIRE))
if (MACH_IS_MVME16x)
mvme16x_cons_write(c, s, n);
else
