Initial revision

13 files changed, 265 insertions, 0 deletions

diff --git a/board/cogent/Makefile b/board/cogent/Makefile
new file mode 100644
index 0000000..0cf6411
--- /dev/null
+++ b/board/cogent/Makefile
@@ -0,0 +1,47 @@
+#
+# (C) Copyright 2000
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+include $(TOPDIR)/config.mk
+
+LIB	= lib$(BOARD).a
+
+OBJS	:= mb.o flash.o dipsw.o lcd.o serial.o # pci.o rtc.o par.o kbm.o
+SOBJS	:=
+
+$(LIB):	$(OBJS)
+	$(AR) crv $@ $^
+
+clean:
+	rm -f $(SOBJS) $(OBJS)
+
+distclean:	clean
+	rm -f $(LIB) core *.bak .depend
+
+#########################################################################
+
+.depend:	Makefile $(SOBJS:.o=.S) $(OBJS:.o=.c)
+		$(CC) -M $(CPPFLAGS) $(SOBJS:.o=.S) $(OBJS:.o=.c) > $@
+
+-include .depend
+
+#########################################################################
diff --git a/board/cogent/README.cma286 b/board/cogent/README.cma286
new file mode 100644
index 0000000..aeebc85
--- /dev/null
+++ b/board/cogent/README.cma286
@@ -0,0 +1,69 @@
+CPU module revisions
+--------------------
+
+My cpu module has the model number "CMA286-60-990526-01". My motherboard
+has the model number "CMA102-32M-990526-01". These are both fairly old,
+and may not reflect current design. In particular, I can see from the
+Cogent web site that the CMA286 has been significantly redesigned - it
+now has on board RAM (4M), ethernet 10baseT PHY (on SCC2), 2 serial ports
+(SMC1 and SMC2), and 48pin DIN for the FEC (if present i.e. MPC860T), and
+also the EPROM is 512K.
+
+My CMA286-60 has none of this, and only 128K EPROM. In addition, the CPU
+clock is listed as 66MHz, whereas mine is 33.333MHz.
+
+Clocks
+------
+
+Quote from my "CMA286 MPC860/821 User's Manual":
+
+"When setting up the Periodic Interrupt Timer (PIT), be aware that the
+CMA286 places the MPC860/821 in PLL X1 Mode. This means that we feed
+a 25MHz clock directly into the MPC860/821. This mode sets the divisor
+for the PIT to be 512. In addition, the Time Base Register (TMB)
+divisor is set to 16."
+
+I interpreted this information to mean that EXTCLK is 25MHz and that at
+power on reset, MODCK1=1 and MODCK2=0, which selects EXTCLK as the
+source for OSCCLK and PITRTCLK, sets RTDIV to 512 and sets MF (the
+multiplication factor) to 1 (I assume this is what they mean by X1
+mode above). MF=1 means the cpus internal clock runs at the same
+rate as EXTCLK i.e. 25MHz.
+
+Furthermore, since SCCR[TBS] (the Time Base Source selector bit in the
+System Clock and Reset Control register) is set in the cpu initialisation
+code, the TMBCLK source is forced to be GCLK2 and the TMBCLK prescale is
+forced to be 16. This results in TMBCLK=1562500.
+
+One problem - since PITRTCLK source is EXTCLK (25Mhz) and RTDIV is 512,
+PITRTCLK will be 48828.125 (huh?). Another quote from the MPC860 Users
+Manual:
+
+"When used by the real-time clock (RTC), the PITRTCLK source is first
+divided as determined by RTDIV, and then divided in the RTC circuits by
+either 8192 or 9600. Therefore, in order for the RTC to count in
+seconds, the clock source must satisfy:
+
+	(EXTCLK or OSCM) / [(4 or 512) x (8192 or 9600)] = 1
+
+The RTC will operate with other frequencies, but it will not count in
+units of seconds."
+
+Therefore, the internal RTC of the MPC860 is not going to count in
+seconds, so we must use the motherboard RTC (if we need a RTC).
+
+I presume this means that they do not provide a fixed oscillator for
+OSCM. The code in get_gclk_freq() assumes PITRTCLK source is OSCM,
+RTDIV is 4, and that OSCM/4 is 8192 (i.e. a ~32KHz oscillator). Since
+the CMA286-60 doesn't have this (at least mine doesn't) we can't use
+the code in get_gclk_freq().
+
+Finally, it appears that the internal clock in my CMA286-60 is actually
+33.333MHz. Which makes TMBCLK=2083312.5 (another huh?) and
+PITRTCLK=65103.515625 (bloody hell!).
+
+If anyone finds anything wrong with the stuff above, I would appreciate
+an email about it.
+
+Murray Jensen <Murray.Jensen@cmst.csiro.au>
+21-Aug-00
diff --git a/board/cogent/config.mk b/board/cogent/config.mk
new file mode 100644
index 0000000..ee77939
--- /dev/null
+++ b/board/cogent/config.mk
@@ -0,0 +1,31 @@
+#
+# (C) Copyright 2000
+# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+#
+# See file CREDITS for list of people who contributed to this
+# project.
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of
+# the License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+# MA 02111-1307 USA
+#
+
+#
+# Cogent Modular Architecture
+#
+
+# Boot EPROM location
+TEXT_BASE = 0xfff00000
+
+PLATFORM_CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE) -I$(TOPDIR)
diff --git a/board/cogent/dipsw.h b/board/cogent/dipsw.h
new file mode 100644
index 0000000..4f52fd4
--- /dev/null
+++ b/board/cogent/dipsw.h
@@ -0,0 +1,3 @@
+extern unsigned char dipsw_raw(void);
+extern unsigned char dipsw_cooked(void);
+extern void dipsw_init(void);
diff --git a/board/cogent/kbm.c b/board/cogent/kbm.c
new file mode 100644
index 0000000..8496402
--- /dev/null
+++ b/board/cogent/kbm.c
@@ -0,0 +1,3 @@
+/* keyboard/mouse not implemented yet */
+
+int cma_kbm_not_implemented = 1;
diff --git a/board/cogent/kbm.h b/board/cogent/kbm.h
new file mode 100644
index 0000000..7eb419c
--- /dev/null
+++ b/board/cogent/kbm.h
@@ -0,0 +1,79 @@
+/* keyboard/mouse not implemented yet */
+
+extern int cma_kbm_not_implemented;
+
+/**************** DEFINES for H8542B Keyboard/Mouse Controller ***************/
+
+/*
+ * note the auxillary port is used to control the mouse
+ */
+
+/* 8542B Commands (Sent to the Command Port) */
+#define HT8542_CMD_SET_BYTE	0x60	/* Set the command byte */
+#define HT8542_CMD_GET_BYTE	0x20	/* Get the command byte */
+#define HT8542_CMD_KBD_OBUFF	0xD2	/* Write to HT8542 Kbd Output Buffer */
+#define HT8542_CMD_AUX_OBUFF	0xD3	/* Write to HT8542 Mse Output Buffer */
+#define HT8542_CMD_AUX_WRITE	0xD4	/* Write to Mouse Port */
+#define HT8542_CMD_AUX_OFF	0xA7	/* Disable Mouse Port */
+#define HT8542_CMD_AUX_ON	0xA8	/* Re-Enable Mouse Port */
+#define HT8542_CMD_AUX_TEST	0xA9	/* Test for the presence of a Mouse */
+#define HT8542_CMD_DIAG		0xAA	/* Start Diagnostics */
+#define HT8542_CMD_KBD_TEST	0xAB	/* Test for presence of a keyboard */
+#define HT8542_CMD_KBD_OFF	0xAD	/* Disable Kbd Port (use KBD_DAT_ON) */
+#define HT8542_CMD_KBD_ON	0xAE	/* Enable Kbd Port (use KBD_DAT_OFF) */
+
+/* HT8542B cmd byte set by KBD_CMD_SET_BYTE and retrieved by KBD_CMD_GET_BYTE */
+#define HT8542_CMD_BYTE_TRANS	0x40
+#define HT8542_CMD_BYTE_AUX_OFF	0x20	/* 1 = mse port disabled, 0 = enabled */
+#define HT8542_CMD_BYTE_KBD_OFF	0x10	/* 1 = kbd port disabled, 0 = enabled */
+#define HT8542_CMD_BYTE_OVER	0x08	/* 1 = override keyboard lock */
+#define HT8542_CMD_BYTE_RES	0x04	/* reserved */
+#define HT8542_CMD_BYTE_AUX_INT	0x02	/* 1 = enable mouse interrupt */
+#define HT8542_CMD_BYTE_KBD_INT	0x01	/* 1 = enable keyboard interrupt */
+
+/* Keyboard Commands (Sent to the Data Port) */
+#define KBD_CMD_LED		0xED	/* Set Keyboard LEDS with next byte */
+#define KBD_CMD_ECHO		0xEE	/* Echo - we get 0xFA, 0xEE back */
+#define KBD_CMD_MODE		0xF0	/* set scan code mode with next byte */
+#define KBD_CMD_ID		0xF2	/* get keyboard/mouse ID */
+#define KBD_CMD_RPT		0xF3	/* Set Repeat Rate and Delay 2nd Byte */
+#define KBD_CMD_ON		0xF4	/* Enable keyboard */
+#define KBD_CMD_OFF		0xF5	/* Disables Scanning, Resets to Def */
+#define KBD_CMD_DEF		0xF6	/* Reverts kbd to default settings */
+#define KBD_CMD_RST		0xFF	/* Reset - should get 0xFA, 0xAA back */
+
+/* Set LED second bit defines */
+#define KBD_CMD_LED_SCROLL	0x01	/* Set SCROLL LOCK LED on */
+#define KBD_CMD_LED_NUM		0x02	/* Set NUM LOCK LED on */
+#define KBD_CMD_LED_CAPS	0x04	/* Set CAPS LOCK LED on */
+
+/* Set Mode second byte defines */
+#define KBD_CMD_MODE_STAT	0x00	/* get current scan code mode */
+#define KBD_CMD_MODE_SCAN1	0x01	/* set mode to scan code 1 */
+#define KBD_CMD_MODE_SCAN2	0x02	/* set mode to scan code 2 */
+#define KBD_CMD_MODE_SCAN3	0x03	/* set mode to scan code 3 */
+
+/* Keyboard/Mouse ID Codes */
+#define KBD_CMD_ID_1ST		0xAB	/* 1st byte is 0xAB, 2nd is actual ID */
+#define KBD_CMD_ID_KBD		0x83	/* Keyboard */
+#define KBD_CMD_ID_MOUSE	0x00	/* Mouse */
+
+/* Keyboard Data Return Defines */
+#define KBD_STAT_OVER		0x00	/* Buffer Overrun */
+#define KBD_STAT_DIAG_OK	0x55	/* Internal Self Test OK */
+#define KBD_STAT_RST_OK		0xAA	/* Reset Complete */
+#define KBD_STAT_ECHO		0xEE	/* Echo Command Return */
+#define KBD_STAT_BRK		0xF0	/* Prefix for Break Key Code */
+#define KBD_STAT_ACK		0xFA	/* Received after all commands */
+#define KBD_STAT_DIAG_FAIL	0xFD	/* Internal Self Test Failed */
+#define KBD_STAT_RESEND		0xFE	/* Resend Last Command */
+
+/* HT8542B Status Register Bit Defines */
+#define HT8542_STAT_OBF		0x01	/* 1 = output buffer is full */
+#define HT8542_STAT_IBF		0x02	/* 1 = input buffer is full */
+#define HT8542_STAT_SYS		0x04	/* system flag - unused */
+#define HT8542_STAT_CMD		0x08	/* 1 = cmd in input buffer, 0 = data */
+#define HT8542_STAT_INH		0x10	/* 1 = Inhibit - unused */
+#define HT8542_STAT_TX		0x20	/* 1 = Transmit Timeout has occured */
+#define HT8542_STAT_RX		0x40	/* 1 = Receive Timeout has occured */
+#define HT8542_STAT_PERR	0x80	/* 1 = Parity Error from Keyboard */
diff --git a/board/cogent/par.c b/board/cogent/par.c
new file mode 100644
index 0000000..a03c0f1
--- /dev/null
+++ b/board/cogent/par.c
@@ -0,0 +1,3 @@
+/* parallel not implemented yet */
+
+int cma_parallel_not_implemented = 1;
diff --git a/board/cogent/par.h b/board/cogent/par.h
new file mode 100644
index 0000000..664ae4a
--- /dev/null
+++ b/board/cogent/par.h
@@ -0,0 +1,3 @@
+/* parallel not implemented yet */
+
+extern int cma_parallel_not_implemented;
diff --git a/board/cogent/pci.c b/board/cogent/pci.c
new file mode 100644
index 0000000..0a57c0c
--- /dev/null
+++ b/board/cogent/pci.c
@@ -0,0 +1,3 @@
+/* pci not implemented yet */
+
+int cma_pci_not_implemented = 1;
diff --git a/board/cogent/pci.h b/board/cogent/pci.h
new file mode 100644
index 0000000..35aa354
--- /dev/null
+++ b/board/cogent/pci.h
@@ -0,0 +1,3 @@
+/* pci not implemented yet */
+
+extern int cma_pci_not_implemented;
diff --git a/board/cogent/rtc.c b/board/cogent/rtc.c
new file mode 100644
index 0000000..ace9193
--- /dev/null
+++ b/board/cogent/rtc.c
@@ -0,0 +1,3 @@
+/* rtc not implemented yet */
+
+int cma_rtc_not_implemented = 1;
diff --git a/board/cogent/rtc.h b/board/cogent/rtc.h
new file mode 100644
index 0000000..4b55bd2
--- /dev/null
+++ b/board/cogent/rtc.h
@@ -0,0 +1,3 @@
+/* rtc not implemented yet */
+
+extern int cma_rtc_not_implemented;
diff --git a/board/cogent/serial.h b/board/cogent/serial.h
new file mode 100644
index 0000000..89962d8
--- /dev/null
+++ b/board/cogent/serial.h
@@ -0,0 +1,15 @@
+/* Line Status Register bits */
+#define LSR_DR		0x01	/* Data ready */
+#define LSR_OE		0x02	/* Overrun */
+#define LSR_PE		0x04	/* Parity error */
+#define LSR_FE		0x08	/* Framing error */
+#define LSR_BI		0x10	/* Break */
+#define LSR_THRE	0x20	/* Xmit holding register empty */
+#define LSR_TEMT	0x40	/* Xmitter empty */
+#define LSR_ERR		0x80	/* Error */
+
+#define CLKRATE		3686400	/* cogent motherboard serial clk = 3.6864MHz */
+#define DEFDIV		1	/* default to 230400 bps */
+
+#define br_to_div(br)	(CLKRATE / (16 * (br)))
+#define div_to_br(div)	(CLKRATE / (16 * (div)))