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-rw-r--r--arch/m68k/Kconfig.debug2
-rw-r--r--arch/m68k/kernel/head.S117
-rw-r--r--arch/m68k/mac/config.c29
3 files changed, 89 insertions, 59 deletions
diff --git a/arch/m68k/Kconfig.debug b/arch/m68k/Kconfig.debug
index 8702dc65f7f2..a0c8863bd08b 100644
--- a/arch/m68k/Kconfig.debug
+++ b/arch/m68k/Kconfig.debug
@@ -4,7 +4,7 @@ source "lib/Kconfig.debug"
config EARLY_PRINTK
bool "Early printk" if EMBEDDED
- depends on MVME16x
+ depends on MVME16x || MAC
default y
help
Write kernel log output directly to a serial port.
diff --git a/arch/m68k/kernel/head.S b/arch/m68k/kernel/head.S
index 27622b3273c1..d197e7ff62c5 100644
--- a/arch/m68k/kernel/head.S
+++ b/arch/m68k/kernel/head.S
@@ -250,9 +250,8 @@
* USE_MFP: Use the ST-MFP port (Modem1) for serial debug.
*
* Macintosh constants:
- * MAC_SERIAL_DEBUG: Turns on serial debug output for the Macintosh.
- * MAC_USE_SCC_A: Use the SCC port A (modem) for serial debug.
- * MAC_USE_SCC_B: Use the SCC port B (printer) for serial debug (default).
+ * MAC_USE_SCC_A: Use SCC port A (modem) for serial debug and early console.
+ * MAC_USE_SCC_B: Use SCC port B (printer) for serial debug and early console.
*/
#include <linux/linkage.h>
@@ -268,33 +267,25 @@
#include <asm/machw.h>
-/*
- * Macintosh console support
- */
-
#ifdef CONFIG_FRAMEBUFFER_CONSOLE
#define CONSOLE
#define CONSOLE_PENGUIN
#endif
-/*
- * Macintosh serial debug support; outputs boot info to the printer
- * and/or modem serial ports
- */
-#undef MAC_SERIAL_DEBUG
+#ifdef CONFIG_EARLY_PRINTK
+#define SERIAL_DEBUG
+#else
+#undef SERIAL_DEBUG
+#endif
-/*
- * Macintosh serial debug port selection; define one or both;
- * requires MAC_SERIAL_DEBUG to be defined
- */
-#define MAC_USE_SCC_A /* Macintosh modem serial port */
-#define MAC_USE_SCC_B /* Macintosh printer serial port */
+#else /* !CONFIG_MAC */
-#endif /* CONFIG_MAC */
+#define SERIAL_DEBUG
+
+#endif /* !CONFIG_MAC */
#undef MMU_PRINT
#undef MMU_NOCACHE_KERNEL
-#define SERIAL_DEBUG
#undef DEBUG
/*
@@ -655,11 +646,11 @@ ENTRY(__start)
lea %pc@(L(mac_rowbytes)),%a1
movel %a0@,%a1@
-#ifdef MAC_SERIAL_DEBUG
+#ifdef SERIAL_DEBUG
get_bi_record BI_MAC_SCCBASE
lea %pc@(L(mac_sccbase)),%a1
movel %a0@,%a1@
-#endif /* MAC_SERIAL_DEBUG */
+#endif
#if 0
/*
@@ -1427,7 +1418,7 @@ L(mmu_fixup_done):
subl %d0,L(console_font)
subl %d0,L(console_font_data)
#endif
-#ifdef MAC_SERIAL_DEBUG
+#ifdef SERIAL_DEBUG
orl #0x50000000,L(mac_sccbase)
#endif
1:
@@ -1917,7 +1908,7 @@ mmu_030_print:
jbne 30b
mmu_print_done:
- puts "\n\n"
+ puts "\n"
func_return mmu_print
@@ -2768,7 +2759,7 @@ L(scc_initable_mac):
.byte 9,0 /* no interrupts */
.byte 10,0 /* NRZ */
.byte 11,0x50 /* use baud rate generator */
- .byte 12,10,13,0 /* 9600 baud */
+ .byte 12,1,13,0 /* 38400 baud */
.byte 14,1 /* Baud rate generator enable */
.byte 3,0xc1 /* enable receiver */
.byte 5,0xea /* enable transmitter */
@@ -2906,10 +2897,12 @@ func_start serial_init,%d0/%d1/%a0/%a1
#endif
#ifdef CONFIG_MAC
is_not_mac(L(serial_init_not_mac))
-#ifdef MAC_SERIAL_DEBUG
-#if !defined(MAC_USE_SCC_A) && !defined(MAC_USE_SCC_B)
-#define MAC_USE_SCC_B
-#endif
+
+#ifdef SERIAL_DEBUG
+/* You may define either or both of these. */
+#define MAC_USE_SCC_A /* Modem port */
+#define MAC_USE_SCC_B /* Printer port */
+
#define mac_scc_cha_b_ctrl_offset 0x0
#define mac_scc_cha_a_ctrl_offset 0x2
#define mac_scc_cha_b_data_offset 0x4
@@ -2940,7 +2933,7 @@ func_start serial_init,%d0/%d1/%a0/%a1
jra 7b
8:
#endif /* MAC_USE_SCC_B */
-#endif /* MAC_SERIAL_DEBUG */
+#endif /* SERIAL_DEBUG */
jra L(serial_init_done)
L(serial_init_not_mac):
@@ -3011,7 +3004,7 @@ func_start serial_putc,%d0/%d1/%a0/%a1
#ifdef CONFIG_MAC
is_not_mac(5f)
-#ifdef MAC_SERIAL_DEBUG
+#ifdef SERIAL_DEBUG
#ifdef MAC_USE_SCC_A
movel %pc@(L(mac_sccbase)),%a1
@@ -3029,7 +3022,7 @@ func_start serial_putc,%d0/%d1/%a0/%a1
moveb %d0,%a1@(mac_scc_cha_b_data_offset)
#endif /* MAC_USE_SCC_B */
-#endif /* MAC_SERIAL_DEBUG */
+#endif /* SERIAL_DEBUG */
jra L(serial_putc_done)
5:
@@ -3248,33 +3241,39 @@ func_return putn
#ifdef CONFIG_MAC
/*
- * mac_serial_print
+ * mac_early_print
*
* This routine takes its parameters on the stack. It then
- * turns around and calls the internal routine. This routine
- * is used until the Linux console driver initializes itself.
+ * turns around and calls the internal routines. This routine
+ * is used by the boot console.
*
* The calling parameters are:
- * void mac_serial_print(const char *str);
+ * void mac_early_print(const char *str, unsigned length);
*
* This routine does NOT understand variable arguments only
* simple strings!
*/
-ENTRY(mac_serial_print)
- moveml %d0/%a0,%sp@-
-#if 1
- move %sr,%sp@-
+ENTRY(mac_early_print)
+ moveml %d0/%d1/%a0,%sp@-
+ movew %sr,%sp@-
ori #0x0700,%sr
-#endif
- movel %sp@(10),%a0 /* fetch parameter */
+ movel %sp@(18),%a0 /* fetch parameter */
+ movel %sp@(22),%d1 /* fetch parameter */
jra 2f
-1: serial_putc %d0
-2: moveb %a0@+,%d0
- jne 1b
-#if 1
- move %sp@+,%sr
+1:
+#ifdef CONSOLE
+ console_putc %d0
#endif
- moveml %sp@+,%d0/%a0
+#ifdef SERIAL_DEBUG
+ serial_putc %d0
+#endif
+ subq #1,%d1
+2: jeq 3f
+ moveb %a0@+,%d0
+ jne 1b
+3:
+ movew %sp@+,%sr
+ moveml %sp@+,%d0/%d1/%a0
rts
#endif /* CONFIG_MAC */
@@ -3409,10 +3408,10 @@ func_start console_put_stats,%a0/%d7
* a0 = pointer to boot_info
* d7 = value of boot_info fields
*/
- puts "\nMacLinux\n\n"
+ puts "\nMacLinux\n"
#ifdef SERIAL_DEBUG
- puts " vidaddr:"
+ puts "\n vidaddr:"
putn %pc@(L(mac_videobase)) /* video addr. */
puts "\n _stext:"
@@ -3423,19 +3422,21 @@ func_start console_put_stats,%a0/%d7
lea %pc@(_end),%a0
putn %a0
- puts "\ncpuid:"
+ puts "\n cpuid:"
putn %pc@(L(cputype))
- putc '\n'
-#ifdef MAC_SERIAL_DEBUG
+# ifdef CONFIG_MAC
+ puts "\n sccbase:"
putn %pc@(L(mac_sccbase))
+# endif
+# ifdef MMU_PRINT
putc '\n'
-#endif
-# if defined(MMU_PRINT)
jbsr mmu_print_machine_cpu_types
-# endif /* MMU_PRINT */
+# endif
#endif /* SERIAL_DEBUG */
+ putc '\n'
+
func_return console_put_stats
#ifdef CONSOLE_PENGUIN
@@ -3896,11 +3897,11 @@ L(mac_dimensions):
.long 0
L(mac_rowbytes):
.long 0
-#ifdef MAC_SERIAL_DEBUG
+#ifdef SERIAL_DEBUG
L(mac_sccbase):
.long 0
-#endif /* MAC_SERIAL_DEBUG */
#endif
+#endif /* CONFIG_MAC */
#if defined (CONFIG_APOLLO)
LSRB0 = 0x10412
diff --git a/arch/m68k/mac/config.c b/arch/m68k/mac/config.c
index c247de02bc7e..55db101dd36d 100644
--- a/arch/m68k/mac/config.c
+++ b/arch/m68k/mac/config.c
@@ -71,6 +71,31 @@ static void mac_get_model(char *str);
static void mac_identify(void);
static void mac_report_hardware(void);
+#ifdef CONFIG_EARLY_PRINTK
+asmlinkage void __init mac_early_print(const char *s, unsigned n);
+
+static void __init mac_early_cons_write(struct console *con,
+ const char *s, unsigned n)
+{
+ mac_early_print(s, n);
+}
+
+static struct console __initdata mac_early_cons = {
+ .name = "early",
+ .write = mac_early_cons_write,
+ .flags = CON_PRINTBUFFER | CON_BOOT,
+ .index = -1
+};
+
+int __init mac_unregister_early_cons(void)
+{
+ /* mac_early_print can't be used after init sections are discarded */
+ return unregister_console(&mac_early_cons);
+}
+
+late_initcall(mac_unregister_early_cons);
+#endif
+
static void __init mac_sched_init(irq_handler_t vector)
{
via_init_clock(vector);
@@ -164,6 +189,10 @@ void __init config_mac(void)
mach_beep = mac_mksound;
#endif
+#ifdef CONFIG_EARLY_PRINTK
+ register_console(&mac_early_cons);
+#endif
+
/*
* Determine hardware present
*/
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-21 17:07:58 +0000