Add support for PS/2 keyboard on TQM85xx board

Patch by Martin Krause, 07 Nov 2005

Tested on a STK85XX baseboard. Make sure the PS/2 controller
has been programmed. Jumper Settings: X66 1-2, 9-10; X61 2-3

CHANGELOG

@@ -2,6 +2,12 @@
 Changes since U-Boot 1.1.4:
 ======================================================================
 
+* Add support for PS/2 keyboard on TQM85xx board
+  Patch by Martin Krause, 07 Nov 2005
+
+  Tested on a STK85XX baseboard. Make sure the PS/2 controller
+  has been programmed. Jumper Settings: X66 1-2, 9-10; X61 2-3
+
 * Fix TRAB channel switching delay for trab_fkt.bin standalone applikation
   In tsc2000_read_channel() the delay after setting the multiplexer 
   to a temperature channel is increased from 1,5 ms to 10 ms. This

board/tqm85xx/tqm85xx.c

@@ -27,6 +27,9 @@
  * MA 02111-1307 USA
  */
 
+#ifdef CONFIG_PS2MULT
+void ps2mult_early_init(void);
+#endif
 
 #include <common.h>
 #include <pci.h>
@@ -410,3 +413,14 @@ void pci_init_board (void)
 	pci_mpc85xx_init (&hose);
 #endif /* CONFIG_PCI */
 }
+
+#ifdef CONFIG_BOARD_EARLY_INIT_R
+int board_early_init_r (void)
+{
+#ifdef CONFIG_PS2MULT
+	ps2mult_early_init();
+#endif /* CONFIG_PS2MULT */
+	return (0);
+}
+#endif /* CONFIG_BOARD_EARLY_INIT_R */
+

drivers/keyboard.c

@@ -33,7 +33,7 @@
 
 #define	KBD_BUFFER_LEN		0x20  /* size of the keyboardbuffer */
 
-#ifdef CONFIG_MPC5xxx
+#if defined(CONFIG_MPC5xxx) || defined(CONFIG_MPC85xx)
 int ps2ser_check(void);
 #endif
 
@@ -75,7 +75,7 @@ static void kbd_put_queue(char data)
 /* test if a character is in the queue */
 static int kbd_testc(void)
 {
-#ifdef CONFIG_MPC5xxx
+#if defined(CONFIG_MPC5xxx) || defined(CONFIG_MPC85xx)
 	/* no ISR is used, so received chars must be polled */
 	ps2ser_check();
 #endif
@@ -90,7 +90,7 @@ static int kbd_getc(void)
 {
 	char c;
 	while(in_pointer==out_pointer) {
-#ifdef CONFIG_MPC5xxx
+#if defined(CONFIG_MPC5xxx) || defined(CONFIG_MPC85xx)
 	/* no ISR is used, so received chars must be polled */
 	ps2ser_check();
 #endif

drivers/ps2ser.c

@@ -20,6 +20,9 @@
 #include <asm/io.h>
 #include <asm/atomic.h>
 #include <ps2mult.h>
+#ifdef CFG_NS16550
+#include <ns16550.h>
+#endif
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -45,13 +48,24 @@ DECLARE_GLOBAL_DATA_PTR;
 #else
 #error CONFIG_PS2SERIAL must be in 1 ... 6
 #endif
-#endif /* CONFIG_MPC5xxx */
+
+#elif defined(CONFIG_MPC85xx)
+
+#if CONFIG_PS2SERIAL == 1
+#define COM_BASE (CFG_CCSRBAR+0x4500)
+#elif CONFIG_PS2SERIAL == 2
+#define COM_BASE (CFG_CCSRBAR+0x4600)
+#else
+#error CONFIG_PS2SERIAL must be in 1 ... 2
+#endif
+
+#endif /* CONFIG_MPC5xxx / CONFIG_MPC85xx */
 
 static int	ps2ser_getc_hw(void);
 static void	ps2ser_interrupt(void *dev_id);
 
 extern struct	serial_state rs_table[]; /* in serial.c */
-#ifndef CONFIG_MPC5xxx
+#if !defined(CONFIG_MPC5xxx) && !defined(CONFIG_MPC85xx)
 static struct	serial_state *state;
 #endif
 
@@ -106,7 +120,23 @@ int ps2ser_init(void)
 	return (0);
 }
 
-#else /* !CONFIG_MPC5xxx */
+#elif defined(CONFIG_MPC85xx)
+int ps2ser_init(void)
+{
+	NS16550_t com_port = (NS16550_t)COM_BASE;
+
+	com_port->ier = 0x00;
+	com_port->lcr = LCR_BKSE | LCR_8N1;
+	com_port->dll = (CFG_NS16550_CLK / 16 / PS2SER_BAUD) & 0xff;
+	com_port->dlm = ((CFG_NS16550_CLK / 16 / PS2SER_BAUD) >> 8) & 0xff;
+	com_port->lcr = LCR_8N1;
+	com_port->mcr = (MCR_DTR | MCR_RTS);
+	com_port->fcr = (FCR_FIFO_EN | FCR_RXSR | FCR_TXSR);
+
+	return (0);
+}
+
+#else /* !CONFIG_MPC5xxx && !CONFIG_MPC85xx */
 
 static inline unsigned int ps2ser_in(int offset)
 {
@@ -150,12 +180,14 @@ int ps2ser_init(void)
 
 	return 0;
 }
-#endif /* CONFIG_MPC5xxx */
+#endif /* CONFIG_MPC5xxx / CONFIG_MPC85xx / other */
 
 void ps2ser_putc(int chr)
 {
 #ifdef CONFIG_MPC5xxx
 	volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
+#elif defined(CONFIG_MPC85xx)
+	NS16550_t com_port = (NS16550_t)COM_BASE;
 #endif
 #ifdef DEBUG
 	printf(">>>> 0x%02x\n", chr);
@@ -165,6 +197,9 @@ void ps2ser_putc(int chr)
 	while (!(psc->psc_status & PSC_SR_TXRDY));
 
 	psc->psc_buffer_8 = chr;
+#elif defined(CONFIG_MPC85xx)
+	while ((com_port->lsr & LSR_THRE) == 0);
+	com_port->thr = chr;
 #else
 	while (!(ps2ser_in(UART_LSR) & UART_LSR_THRE));
 
@@ -176,6 +211,8 @@ static int ps2ser_getc_hw(void)
 {
 #ifdef CONFIG_MPC5xxx
 	volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
+#elif defined(CONFIG_MPC85xx)
+	NS16550_t com_port = (NS16550_t)COM_BASE;
 #endif
 	int res = -1;
 
@@ -183,6 +220,10 @@ static int ps2ser_getc_hw(void)
 	if (psc->psc_status & PSC_SR_RXRDY) {
 		res = (psc->psc_buffer_8);
 	}
+#elif defined(CONFIG_MPC85xx)
+	if (com_port->lsr & LSR_DR) {
+		res = com_port->rbr;
+	}
 #else
 	if (ps2ser_in(UART_LSR) & UART_LSR_DR) {
 		res = (ps2ser_in(UART_RX));
@@ -238,6 +279,8 @@ static void ps2ser_interrupt(void *dev_id)
 {
 #ifdef CONFIG_MPC5xxx
 	volatile struct mpc5xxx_psc *psc = (struct mpc5xxx_psc *)PSC_BASE;
+#elif defined(CONFIG_MPC85xx)
+	NS16550_t com_port = (NS16550_t)COM_BASE;
 #endif
 	int chr;
 	int status;
@@ -246,6 +289,8 @@ static void ps2ser_interrupt(void *dev_id)
 		chr = ps2ser_getc_hw();
 #ifdef CONFIG_MPC5xxx
 		status = psc->psc_status;
+#elif defined(CONFIG_MPC85xx)
+		status = com_port->lsr;
 #else
 		status = ps2ser_in(UART_IIR);
 #endif
@@ -260,6 +305,8 @@ static void ps2ser_interrupt(void *dev_id)
 		}
 #ifdef CONFIG_MPC5xxx
 	} while (status & PSC_SR_RXRDY);
+#elif defined(CONFIG_MPC85xx)
+	} while (status & LSR_DR);
 #else
 	} while (status & UART_IIR_RDI);
 #endif

include/configs/TQM85xx.h

@@ -177,6 +177,13 @@
 #define CFG_BAUDRATE_TABLE  \
 	{300, 600, 1200, 2400, 4800, 9600, 19200, 38400,115200}
 
+/* PS/2 Keyboard */
+#define CONFIG_PS2KBD			/* AT-PS/2 Keyboard		*/
+#define CONFIG_PS2MULT			/* .. on PS/2 Multiplexer	*/
+#define CONFIG_PS2SERIAL	2	/* .. on DUART2			*/
+#define CONFIG_PS2MULT_DELAY	(CFG_HZ/2)	/* Initial delay	*/
+#define CONFIG_BOARD_EARLY_INIT_R	1
+
 /* Use the HUSH parser */
 #define CFG_HUSH_PARSER
 #ifdef	CFG_HUSH_PARSER