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-rw-r--r--arch/m68k/apollo/Makefile6
-rw-r--r--arch/m68k/apollo/config.c269
-rw-r--r--arch/m68k/apollo/dn_ints.c48
3 files changed, 323 insertions, 0 deletions
diff --git a/arch/m68k/apollo/Makefile b/arch/m68k/apollo/Makefile
new file mode 100644
index 000000000..676c74b26
--- /dev/null
+++ b/arch/m68k/apollo/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Makefile for Linux arch/m68k/apollo source directory
+#
+
+obj-y := config.o dn_ints.o
diff --git a/arch/m68k/apollo/config.c b/arch/m68k/apollo/config.c
new file mode 100644
index 000000000..42a8b8e2b
--- /dev/null
+++ b/arch/m68k/apollo/config.c
@@ -0,0 +1,269 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/console.h>
+#include <linux/rtc.h>
+#include <linux/vt_kern.h>
+#include <linux/interrupt.h>
+
+#include <asm/setup.h>
+#include <asm/bootinfo.h>
+#include <asm/bootinfo-apollo.h>
+#include <asm/byteorder.h>
+#include <asm/apollohw.h>
+#include <asm/irq.h>
+#include <asm/machdep.h>
+#include <asm/config.h>
+
+u_long sio01_physaddr;
+u_long sio23_physaddr;
+u_long rtc_physaddr;
+u_long pica_physaddr;
+u_long picb_physaddr;
+u_long cpuctrl_physaddr;
+u_long timer_physaddr;
+u_long apollo_model;
+
+extern void dn_sched_init(void);
+extern void dn_init_IRQ(void);
+extern int dn_dummy_hwclk(int, struct rtc_time *);
+extern void dn_dummy_reset(void);
+#ifdef CONFIG_HEARTBEAT
+static void dn_heartbeat(int on);
+#endif
+static irqreturn_t dn_timer_int(int irq,void *);
+static void dn_get_model(char *model);
+static const char *apollo_models[] = {
+ [APOLLO_DN3000-APOLLO_DN3000] = "DN3000 (Otter)",
+ [APOLLO_DN3010-APOLLO_DN3000] = "DN3010 (Otter)",
+ [APOLLO_DN3500-APOLLO_DN3000] = "DN3500 (Cougar II)",
+ [APOLLO_DN4000-APOLLO_DN3000] = "DN4000 (Mink)",
+ [APOLLO_DN4500-APOLLO_DN3000] = "DN4500 (Roadrunner)"
+};
+
+int __init apollo_parse_bootinfo(const struct bi_record *record)
+{
+ int unknown = 0;
+ const void *data = record->data;
+
+ switch (be16_to_cpu(record->tag)) {
+ case BI_APOLLO_MODEL:
+ apollo_model = be32_to_cpup(data);
+ break;
+
+ default:
+ unknown=1;
+ }
+
+ return unknown;
+}
+
+static void __init dn_setup_model(void)
+{
+ pr_info("Apollo hardware found: [%s]\n",
+ apollo_models[apollo_model - APOLLO_DN3000]);
+
+ switch(apollo_model) {
+ case APOLLO_UNKNOWN:
+ panic("Unknown apollo model");
+ break;
+ case APOLLO_DN3000:
+ case APOLLO_DN3010:
+ sio01_physaddr=SAU8_SIO01_PHYSADDR;
+ rtc_physaddr=SAU8_RTC_PHYSADDR;
+ pica_physaddr=SAU8_PICA;
+ picb_physaddr=SAU8_PICB;
+ cpuctrl_physaddr=SAU8_CPUCTRL;
+ timer_physaddr=SAU8_TIMER;
+ break;
+ case APOLLO_DN4000:
+ sio01_physaddr=SAU7_SIO01_PHYSADDR;
+ sio23_physaddr=SAU7_SIO23_PHYSADDR;
+ rtc_physaddr=SAU7_RTC_PHYSADDR;
+ pica_physaddr=SAU7_PICA;
+ picb_physaddr=SAU7_PICB;
+ cpuctrl_physaddr=SAU7_CPUCTRL;
+ timer_physaddr=SAU7_TIMER;
+ break;
+ case APOLLO_DN4500:
+ panic("Apollo model not yet supported");
+ break;
+ case APOLLO_DN3500:
+ sio01_physaddr=SAU7_SIO01_PHYSADDR;
+ sio23_physaddr=SAU7_SIO23_PHYSADDR;
+ rtc_physaddr=SAU7_RTC_PHYSADDR;
+ pica_physaddr=SAU7_PICA;
+ picb_physaddr=SAU7_PICB;
+ cpuctrl_physaddr=SAU7_CPUCTRL;
+ timer_physaddr=SAU7_TIMER;
+ break;
+ default:
+ panic("Undefined apollo model");
+ break;
+ }
+
+
+}
+
+int dn_serial_console_wait_key(struct console *co) {
+
+ while(!(sio01.srb_csrb & 1))
+ barrier();
+ return sio01.rhrb_thrb;
+}
+
+void dn_serial_console_write (struct console *co, const char *str,unsigned int count)
+{
+ while(count--) {
+ if (*str == '\n') {
+ sio01.rhrb_thrb = (unsigned char)'\r';
+ while (!(sio01.srb_csrb & 0x4))
+ ;
+ }
+ sio01.rhrb_thrb = (unsigned char)*str++;
+ while (!(sio01.srb_csrb & 0x4))
+ ;
+ }
+}
+
+void dn_serial_print (const char *str)
+{
+ while (*str) {
+ if (*str == '\n') {
+ sio01.rhrb_thrb = (unsigned char)'\r';
+ while (!(sio01.srb_csrb & 0x4))
+ ;
+ }
+ sio01.rhrb_thrb = (unsigned char)*str++;
+ while (!(sio01.srb_csrb & 0x4))
+ ;
+ }
+}
+
+void __init config_apollo(void)
+{
+ int i;
+
+ dn_setup_model();
+
+ mach_sched_init=dn_sched_init; /* */
+ mach_init_IRQ=dn_init_IRQ;
+ mach_hwclk = dn_dummy_hwclk; /* */
+ mach_reset = dn_dummy_reset; /* */
+#ifdef CONFIG_HEARTBEAT
+ mach_heartbeat = dn_heartbeat;
+#endif
+ mach_get_model = dn_get_model;
+
+ cpuctrl=0xaa00;
+
+ /* clear DMA translation table */
+ for(i=0;i<0x400;i++)
+ addr_xlat_map[i]=0;
+
+}
+
+irqreturn_t dn_timer_int(int irq, void *dev_id)
+{
+ volatile unsigned char x;
+
+ legacy_timer_tick(1);
+ timer_heartbeat();
+
+ x = *(volatile unsigned char *)(apollo_timer + 3);
+ x = *(volatile unsigned char *)(apollo_timer + 5);
+
+ return IRQ_HANDLED;
+}
+
+void dn_sched_init(void)
+{
+ /* program timer 1 */
+ *(volatile unsigned char *)(apollo_timer + 3) = 0x01;
+ *(volatile unsigned char *)(apollo_timer + 1) = 0x40;
+ *(volatile unsigned char *)(apollo_timer + 5) = 0x09;
+ *(volatile unsigned char *)(apollo_timer + 7) = 0xc4;
+
+ /* enable IRQ of PIC B */
+ *(volatile unsigned char *)(pica+1)&=(~8);
+
+#if 0
+ pr_info("*(0x10803) %02x\n",
+ *(volatile unsigned char *)(apollo_timer + 0x3));
+ pr_info("*(0x10803) %02x\n",
+ *(volatile unsigned char *)(apollo_timer + 0x3));
+#endif
+
+ if (request_irq(IRQ_APOLLO, dn_timer_int, 0, "time", NULL))
+ pr_err("Couldn't register timer interrupt\n");
+}
+
+int dn_dummy_hwclk(int op, struct rtc_time *t) {
+
+
+ if(!op) { /* read */
+ t->tm_sec=rtc->second;
+ t->tm_min=rtc->minute;
+ t->tm_hour=rtc->hours;
+ t->tm_mday=rtc->day_of_month;
+ t->tm_wday=rtc->day_of_week;
+ t->tm_mon = rtc->month - 1;
+ t->tm_year=rtc->year;
+ if (t->tm_year < 70)
+ t->tm_year += 100;
+ } else {
+ rtc->second=t->tm_sec;
+ rtc->minute=t->tm_min;
+ rtc->hours=t->tm_hour;
+ rtc->day_of_month=t->tm_mday;
+ if(t->tm_wday!=-1)
+ rtc->day_of_week=t->tm_wday;
+ rtc->month = t->tm_mon + 1;
+ rtc->year = t->tm_year % 100;
+ }
+
+ return 0;
+
+}
+
+void dn_dummy_reset(void) {
+
+ dn_serial_print("The end !\n");
+
+ for(;;);
+
+}
+
+void dn_dummy_waitbut(void) {
+
+ dn_serial_print("waitbut\n");
+
+}
+
+static void dn_get_model(char *model)
+{
+ strcpy(model, "Apollo ");
+ if (apollo_model >= APOLLO_DN3000 && apollo_model <= APOLLO_DN4500)
+ strcat(model, apollo_models[apollo_model - APOLLO_DN3000]);
+}
+
+#ifdef CONFIG_HEARTBEAT
+static int dn_cpuctrl=0xff00;
+
+static void dn_heartbeat(int on) {
+
+ if(on) {
+ dn_cpuctrl&=~0x100;
+ cpuctrl=dn_cpuctrl;
+ }
+ else {
+ dn_cpuctrl&=~0x100;
+ dn_cpuctrl|=0x100;
+ cpuctrl=dn_cpuctrl;
+ }
+}
+#endif
+
diff --git a/arch/m68k/apollo/dn_ints.c b/arch/m68k/apollo/dn_ints.c
new file mode 100644
index 000000000..02cff7efc
--- /dev/null
+++ b/arch/m68k/apollo/dn_ints.c
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+
+#include <asm/traps.h>
+#include <asm/apollohw.h>
+
+unsigned int apollo_irq_startup(struct irq_data *data)
+{
+ unsigned int irq = data->irq;
+
+ if (irq < 8)
+ *(volatile unsigned char *)(pica+1) &= ~(1 << irq);
+ else
+ *(volatile unsigned char *)(picb+1) &= ~(1 << (irq - 8));
+ return 0;
+}
+
+void apollo_irq_shutdown(struct irq_data *data)
+{
+ unsigned int irq = data->irq;
+
+ if (irq < 8)
+ *(volatile unsigned char *)(pica+1) |= (1 << irq);
+ else
+ *(volatile unsigned char *)(picb+1) |= (1 << (irq - 8));
+}
+
+void apollo_irq_eoi(struct irq_data *data)
+{
+ *(volatile unsigned char *)(pica) = 0x20;
+ *(volatile unsigned char *)(picb) = 0x20;
+}
+
+static struct irq_chip apollo_irq_chip = {
+ .name = "apollo",
+ .irq_startup = apollo_irq_startup,
+ .irq_shutdown = apollo_irq_shutdown,
+ .irq_eoi = apollo_irq_eoi,
+};
+
+
+void __init dn_init_IRQ(void)
+{
+ m68k_setup_user_interrupt(VEC_USER + 96, 16);
+ m68k_setup_irq_controller(&apollo_irq_chip, handle_fasteoi_irq,
+ IRQ_APOLLO, 16);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 01:36:15 +0000