* Patch by Thomas Frieden, 13 Nov 2002:

  Add code for AmigaOne board
  (preliminary merge to U-Boot, still WIP)

* Patch by Jon Diekema, 12 Nov 2002:
  - Adding URL for IEEE OUI lookup
  - Making the autoboot #defines dependent on CONFIG_AUTOBOOT_KEYED
    being defined.
  - In the CONFIG_EXTRA_ENV_SETTINGS #define, the root-on-initrd and
    root-on-nfs macros are designed to switch how the default boot
    method gets defined.

1 files changed, 247 insertions, 0 deletions

diff --git a/board/MAI/AmigaOneG3SE/serial.c b/board/MAI/AmigaOneG3SE/serial.c
new file mode 100644
index 0000000..e83fb46
--- /dev/null
+++ b/board/MAI/AmigaOneG3SE/serial.c
@@ -0,0 +1,247 @@
+#include <common.h>
+#include <ns16550.h>
+#include "short_types.h"
+#include "memio.h"
+#include "articiaS.h"
+
+#ifndef CFG_NS16550
+static uint32 ComPort1;
+
+uint16 SerialEcho = 1;
+
+
+#define RECEIVER_HOLDING 0
+#define TRANSMITTER_HOLDING 0
+#define INTERRUPT_ENABLE 1
+#define INTERRUPT_STATUS 2
+#define FIFO_CONTROL 2
+#define LINE_CONTROL 3
+#define MODEM_CONTROL 4
+#define LINE_STATUS 5
+#define MODEM_STATUS 6
+#define SCRATCH_PAD 7
+
+#define DIVISOR_LATCH_LSB 0
+#define DIVISOR_LATCH_MSB 1
+#define PRESCALER_DIVISION 5
+
+#define COM_WRITE_BYTE(reg, byte) out_byte((ComPort1+reg), byte)
+#define COM_READ_BYTE(reg) in_byte((ComPort1+reg))
+
+static int serial_init_done = 0;
+
+void serial_init (void)
+{
+#if 0
+	uint32 clock_divisor = 115200 / baudrate;
+	uint8 cfg;
+	uint8 a;
+	uint16 devfn = 7 << 3;
+
+	if (serial_init_done)
+		return;
+
+	/*  Enter configuration mode */
+	cfg = pci_read_cfg_byte (0, devfn, 0x85);
+	pci_write_cfg_byte (0, devfn, 0x85, cfg | 0x02);
+
+	/* Set serial port COM1 as 3F8 */
+	out_byte (0x3F0, 0xE7);
+	out_byte (0x3f1, 0xfe);
+
+	/* Set serial port COM2 as 2F8 */
+	out_byte (0x3f0, 0xe8);
+	out_byte (0x3f1, 0xeb);
+
+	/* Enable */
+	out_byte (0x3f0, 0xe2);
+	a = in_byte (0x3f1);
+	a |= 0xc;
+	out_byte (0x3f0, 0xe2);
+	out_byte (0x3f1, a);
+
+	/*  Reset the configuration mode */
+	pci_write_cfg_byte (0, devfn, 0x85, cfg);
+#endif
+
+	ComPort1 = 0x3F8;
+
+	/*  Disable interrupts */
+	COM_WRITE_BYTE (INTERRUPT_ENABLE, 0x00);
+
+	/*  Set baud rate */
+	/* COM_WRITE_BYTE(LINE_CONTROL, 0x83); */
+	/* COM_WRITE_BYTE(DIVISOR_LATCH_LSB, (uint8)(clock_divisor & 0xFF)); */
+	/* COM_WRITE_BYTE(DIVISOR_LATCH_MSB, (uint8)(clock_divisor >> 8)); */
+	/* __asm("eieio"); */
+
+	/*  Set 8-N-1 */
+	COM_WRITE_BYTE (LINE_CONTROL, 0x03);
+	__asm ("eieio");
+
+	/*  Disable FIFO */
+	COM_WRITE_BYTE (MODEM_CONTROL, 0x03);
+	COM_WRITE_BYTE (FIFO_CONTROL, 0x07);
+
+	__asm ("eieio");
+	serial_init_done = 1;
+}
+
+extern int console_changed;
+
+void serial_putc (const char sendme)
+{
+	if (sendme == '\n') {
+		while ((in_byte (0x3FD) & 0x40) == 0);
+		out_byte (0x3f8, 0x0D);
+	}
+
+	while ((in_byte (0x3FD) & 0x40) == 0);
+	out_byte (0x3f8, sendme);
+}
+
+int serial_getc (void)
+{
+#if 0
+	uint8 c;
+
+	for (;;) {
+		uint8 x = in_byte (0x3FD);
+
+		if (x & 0x01)
+			break;
+
+		if (x & 0x0C)
+			out_byte (0x3fd, 0x0c);
+	}
+
+	c = in_byte (0x3F8);
+
+	return c;
+#else
+	while ((in_byte (0x3FD) & 0x01) == 0) {
+		if (console_changed != 0) {
+			printf ("Console changed\n");
+			console_changed = 0;
+			return 0;
+		}
+	}
+	return in_byte (0x3F8);
+#endif
+}
+
+int serial_tstc (void)
+{
+	return (in_byte (0x03FD) & 0x01) != 0;
+}
+
+void serial_debug_putc (int c)
+{
+	serial_puts ("DBG");
+	serial_putc (c);
+	serial_putc (0x0d);
+	serial_putc (0x0A);
+}
+
+#else
+
+const NS16550_t Com0 = (NS16550_t) CFG_NS16550_COM1;
+const NS16550_t Com1 = (NS16550_t) CFG_NS16550_COM2;
+
+int serial_init (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	uint32 clock_divisor = 115200 / gd->baudrate;
+
+	NS16550_init (Com0, clock_divisor);
+	/* NS16550_reinit(Com1, clock_divisor); */
+	/* serial_puts("COM1: 3F8h initalized"); */
+
+	return (0);
+}
+
+#if 0
+void serial_putc (const char c)
+{
+	NS16550_putc (Com0, c);
+	if (c == '\n')
+		NS16550_putc (Com0, 0x0D);
+}
+
+int serial_getc (void)
+{
+	return (int) NS16550_getc (Com0);
+}
+
+int serial_tstc (void)
+{
+	return NS16550_tstc (Com0);
+}
+#else
+void serial_putc (const char sendme)
+{
+	if (sendme == '\n') {
+		while ((in_byte (0x3FD) & 0x40) == 0);
+		out_byte (0x3f8, 0x0D);
+	}
+
+	while ((in_byte (0x3FD) & 0x40) == 0);
+	out_byte (0x3f8, sendme);
+}
+
+
+extern int console_changed;
+
+int serial_getc (void)
+{
+#if 0
+	uint8 c;
+
+	for (;;) {
+		uint8 x = in_byte (0x3FD);
+
+		if (x & 0x01)
+			break;
+
+		if (x & 0x0C)
+			out_byte (0x3fd, 0x0c);
+	}
+
+	c = in_byte (0x3F8);
+
+	return c;
+#else
+	while ((in_byte (0x3FD) & 0x01) == 0) {
+		if (console_changed != 0) {
+			console_changed = 0;
+			return 0;
+		}
+	}
+
+	return in_byte (0x3F8);
+#endif
+}
+
+int serial_tstc (void)
+{
+	return (in_byte (0x03FD) & 0x01) != 0;
+}
+#endif
+
+#endif
+
+void serial_puts (const char *string)
+{
+	while (*string)
+		serial_putc (*string++);
+}
+
+void serial_setbrg (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	uint32 clock_divisor = 115200 / gd->baudrate;
+
+	NS16550_init (Com0, clock_divisor);
+}