1 files changed, 314 insertions, 0 deletions
diff --git a/arch/m68k/q40/config.c b/arch/m68k/q40/config.c
new file mode 100644
index 000000000..4a25ce6a1
--- /dev/null
+++ b/arch/m68k/q40/config.c
@@ -0,0 +1,314 @@
+/*
+ *  arch/m68k/q40/config.c
+ *
+ *  Copyright (C) 1999 Richard Zidlicky
+ *
+ * originally based on:
+ *
+ *  linux/bvme/config.c
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file README.legal in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/errno.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/tty.h>
+#include <linux/console.h>
+#include <linux/linkage.h>
+#include <linux/init.h>
+#include <linux/major.h>
+#include <linux/serial_reg.h>
+#include <linux/rtc.h>
+#include <linux/vt_kern.h>
+#include <linux/bcd.h>
+#include <linux/platform_device.h>
+
+#include <asm/io.h>
+#include <asm/bootinfo.h>
+#include <asm/pgtable.h>
+#include <asm/setup.h>
+#include <asm/irq.h>
+#include <asm/traps.h>
+#include <asm/machdep.h>
+#include <asm/q40_master.h>
+
+extern void q40_init_IRQ(void);
+static void q40_get_model(char *model);
+extern void q40_sched_init(irq_handler_t handler);
+
+static u32 q40_gettimeoffset(void);
+static int q40_hwclk(int, struct rtc_time *);
+static unsigned int q40_get_ss(void);
+static int q40_get_rtc_pll(struct rtc_pll_info *pll);
+static int q40_set_rtc_pll(struct rtc_pll_info *pll);
+
+extern void q40_mksound(unsigned int /*freq*/, unsigned int /*ticks*/);
+
+static void q40_mem_console_write(struct console *co, const char *b,
+				  unsigned int count);
+
+extern int ql_ticks;
+
+static struct console q40_console_driver = {
+	.name	= "debug",
+	.write	= q40_mem_console_write,
+	.flags	= CON_PRINTBUFFER,
+	.index	= -1,
+};
+
+
+/* early debugging function:*/
+extern char *q40_mem_cptr; /*=(char *)0xff020000;*/
+static int _cpleft;
+
+static void q40_mem_console_write(struct console *co, const char *s,
+				  unsigned int count)
+{
+	const char *p = s;
+
+	if (count < _cpleft) {
+		while (count-- > 0) {
+			*q40_mem_cptr = *p++;
+			q40_mem_cptr += 4;
+			_cpleft--;
+		}
+	}
+}
+
+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)) {
+		/*pr_info("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)
+{
+	int l = strlen(str);
+	char *p = q40_mem_cptr;
+
+	while (l-- > 0 && _cpleft-- > 0) {
+		*p = *str++;
+		p += 4;
+	}
+	q40_mem_cptr = p;
+}
+#endif
+
+static int halted;
+
+#ifdef CONFIG_HEARTBEAT
+static void q40_heartbeat(int on)
+{
+	if (halted)
+		return;
+
+	if (on)
+		Q40_LED_ON();
+	else
+		Q40_LED_OFF();
+}
+#endif
+
+static void q40_reset(void)
+{
+	halted = 1;
+	pr_info("*******************************************\n"
+		"Called q40_reset : press the RESET button!!\n"
+		"*******************************************\n");
+	Q40_LED_ON();
+	while (1)
+		;
+}
+
+static void q40_halt(void)
+{
+	halted = 1;
+	pr_info("*******************\n"
+		"  Called q40_halt\n"
+		"*******************\n");
+	Q40_LED_ON();
+	while (1)
+		;
+}
+
+static void q40_get_model(char *model)
+{
+	sprintf(model, "Q40");
+}
+
+static unsigned int serports[] =
+{
+	0x3f8,0x2f8,0x3e8,0x2e8,0
+};
+
+static void __init q40_disable_irqs(void)
+{
+	unsigned i, j;
+
+	j = 0;
+	while ((i = serports[j++]))
+		outb(0, i + UART_IER);
+	master_outb(0, EXT_ENABLE_REG);
+	master_outb(0, KEY_IRQ_ENABLE_REG);
+}
+
+void __init config_q40(void)
+{
+	mach_sched_init = q40_sched_init;
+
+	mach_init_IRQ = q40_init_IRQ;
+	arch_gettimeoffset = q40_gettimeoffset;
+	mach_hwclk = q40_hwclk;
+	mach_get_ss = q40_get_ss;
+	mach_get_rtc_pll = q40_get_rtc_pll;
+	mach_set_rtc_pll = q40_set_rtc_pll;
+
+	mach_reset = q40_reset;
+	mach_get_model = q40_get_model;
+
+#if IS_ENABLED(CONFIG_INPUT_M68K_BEEP)
+	mach_beep = q40_mksound;
+#endif
+#ifdef CONFIG_HEARTBEAT
+	mach_heartbeat = q40_heartbeat;
+#endif
+	mach_halt = q40_halt;
+
+	/* disable a few things that SMSQ might have left enabled */
+	q40_disable_irqs();
+
+	/* no DMA at all, but ide-scsi requires it.. make sure
+	 * all physical RAM fits into the boundary - otherwise
+	 * allocator may play costly and useless tricks */
+	mach_max_dma_address = 1024*1024*1024;
+}
+
+
+int __init q40_parse_bootinfo(const struct bi_record *rec)
+{
+	return 1;
+}
+
+
+static u32 q40_gettimeoffset(void)
+{
+	return 5000 * (ql_ticks != 0) * 1000;
+}
+
+
+/*
+ * Looks like op is non-zero for setting the clock, and zero for
+ * reading the clock.
+ *
+ *  struct hwclk_time {
+ *         unsigned        sec;       0..59
+ *         unsigned        min;       0..59
+ *         unsigned        hour;      0..23
+ *         unsigned        day;       1..31
+ *         unsigned        mon;       0..11
+ *         unsigned        year;      00...
+ *         int             wday;      0..6, 0 is Sunday, -1 means unknown/don't set
+ * };
+ */
+
+static int q40_hwclk(int op, struct rtc_time *t)
+{
+	if (op) {
+		/* Write.... */
+		Q40_RTC_CTRL |= Q40_RTC_WRITE;
+
+		Q40_RTC_SECS = bin2bcd(t->tm_sec);
+		Q40_RTC_MINS = bin2bcd(t->tm_min);
+		Q40_RTC_HOUR = bin2bcd(t->tm_hour);
+		Q40_RTC_DATE = bin2bcd(t->tm_mday);
+		Q40_RTC_MNTH = bin2bcd(t->tm_mon + 1);
+		Q40_RTC_YEAR = bin2bcd(t->tm_year%100);
+		if (t->tm_wday >= 0)
+			Q40_RTC_DOW = bin2bcd(t->tm_wday+1);
+
+		Q40_RTC_CTRL &= ~(Q40_RTC_WRITE);
+	} else {
+		/* Read....  */
+		Q40_RTC_CTRL |= Q40_RTC_READ;
+
+		t->tm_year = bcd2bin (Q40_RTC_YEAR);
+		t->tm_mon  = bcd2bin (Q40_RTC_MNTH)-1;
+		t->tm_mday = bcd2bin (Q40_RTC_DATE);
+		t->tm_hour = bcd2bin (Q40_RTC_HOUR);
+		t->tm_min  = bcd2bin (Q40_RTC_MINS);
+		t->tm_sec  = bcd2bin (Q40_RTC_SECS);
+
+		Q40_RTC_CTRL &= ~(Q40_RTC_READ);
+
+		if (t->tm_year < 70)
+			t->tm_year += 100;
+		t->tm_wday = bcd2bin(Q40_RTC_DOW)-1;
+	}
+
+	return 0;
+}
+
+static unsigned int q40_get_ss(void)
+{
+	return bcd2bin(Q40_RTC_SECS);
+}
+
+/* get and set PLL calibration of RTC clock */
+#define Q40_RTC_PLL_MASK ((1<<5)-1)
+#define Q40_RTC_PLL_SIGN (1<<5)
+
+static int q40_get_rtc_pll(struct rtc_pll_info *pll)
+{
+	int tmp = Q40_RTC_CTRL;
+
+	pll->pll_ctrl = 0;
+	pll->pll_value = tmp & Q40_RTC_PLL_MASK;
+	if (tmp & Q40_RTC_PLL_SIGN)
+		pll->pll_value = -pll->pll_value;
+	pll->pll_max = 31;
+	pll->pll_min = -31;
+	pll->pll_posmult = 512;
+	pll->pll_negmult = 256;
+	pll->pll_clock = 125829120;
+
+	return 0;
+}
+
+static int q40_set_rtc_pll(struct rtc_pll_info *pll)
+{
+	if (!pll->pll_ctrl) {
+		/* the docs are a bit unclear so I am doublesetting */
+		/* RTC_WRITE here ... */
+		int tmp = (pll->pll_value & 31) | (pll->pll_value<0 ? 32 : 0) |
+			  Q40_RTC_WRITE;
+		Q40_RTC_CTRL |= Q40_RTC_WRITE;
+		Q40_RTC_CTRL = tmp;
+		Q40_RTC_CTRL &= ~(Q40_RTC_WRITE);
+		return 0;
+	} else
+		return -EINVAL;
+}
+
+static __init int q40_add_kbd_device(void)
+{
+	struct platform_device *pdev;
+
+	if (!MACH_IS_Q40)
+		return -ENODEV;
+
+	pdev = platform_device_register_simple("q40kbd", -1, NULL, 0);
+	return PTR_ERR_OR_ZERO(pdev);
+}
+arch_initcall(q40_add_kbd_device);