Merge with /home/mk/11-cmb1920/u-boot#4upstream

9 files changed, 958 insertions, 25 deletions

diff --git a/board/spc1920/Makefile b/board/spc1920/Makefile
index 424ab1c..0c48c3a 100644
--- a/board/spc1920/Makefile
+++ b/board/spc1920/Makefile
@@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(BOARD).a
 
-COBJS	= $(BOARD).o
+COBJS	= $(BOARD).o hpi.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))
diff --git a/board/spc1920/hpi.c b/board/spc1920/hpi.c
new file mode 100644
index 0000000..3c36f79
--- /dev/null
+++ b/board/spc1920/hpi.c
@@ -0,0 +1,603 @@
+/*
+ * (C) Copyright 2006
+ * Markus Klotzbuecher, DENX Software Engineering, mk@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
+ */
+
+/*
+ * Host Port Interface (HPI)
+ */
+
+/* debug levels:
+ *  0 : errors
+ *  1 : usefull info
+ *  2 : lots of info
+ *  3 : noisy
+ */
+
+#define DEBUG 0
+
+#include <config.h>
+#include <common.h>
+#include <mpc8xx.h>
+
+#include "pld.h"
+#include "hpi.h"
+
+#define	_NOT_USED_	0xFFFFFFFF
+
+/* original table:
+ * - inserted loops to achieve long CS low and high Periods (~217ns)
+ * - move cs high 2/4 to the right
+ */
+const uint dsp_table_slow[] =
+{
+	/* single read   (offset  0x00 in upm ram) */
+	0x8fffdc04, 0x0fffdc84, 0x0fffdc84, 0x0fffdc00,
+	0x3fffdc04, 0xffffdc84, 0xffffdc84, 0xffffdc05,
+
+	/* burst read    (offset 0x08 in upm ram) */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+	/* single write  (offset 0x18 in upm ram) */
+	0x8fffd004, 0x0fffd084, 0x0fffd084, 0x3fffd000,
+	0xffffd084, 0xffffd084, 0xffffd005, _NOT_USED_,
+
+	/* burst write   (offset 0x20 in upm ram) */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/* refresh       (offset 0x30 in upm ram) */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/* exception     (offset 0x3C in upm ram) */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+};
+
+/* dsp hpi upm ram table
+ * works fine for noninc access, failes on incremental.
+ * - removed first word
+ */
+const uint dsp_table_fast[] =
+{
+	/* single read   (offset  0x00 in upm ram) */
+	0x8fffdc04, 0x0fffdc04, 0x0fffdc00, 0x3fffdc04,
+	0xffffdc05, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+	/* burst read    (offset 0x08 in upm ram) */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+	/* single write  (offset 0x18 in upm ram) */
+	0x8fffd004, 0x0fffd004, 0x3fffd000, 0xffffd005,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+
+	/* burst write   (offset 0x20 in upm ram) */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/* refresh       (offset 0x30 in upm ram) */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+	/* exception     (offset 0x3C in upm ram) */
+	_NOT_USED_, _NOT_USED_, _NOT_USED_, _NOT_USED_,
+};
+
+
+#ifdef CONFIG_SPC1920_HPI_TEST
+#undef HPI_TEST_OSZI
+
+#define HPI_TEST_CHUNKSIZE	0x1000
+#define HPI_TEST_PATTERN	0x00000000
+#define HPI_TEST_START		0x0
+#define HPI_TEST_END		0x30000
+
+#define TINY_AUTOINC_DATA_SIZE 16 /* 32bit words */
+#define TINY_AUTOINC_BASE_ADDR 0x0
+
+static int hpi_activate(void);
+static void hpi_inactivate(void);
+static void dsp_reset(void);
+
+static int hpi_write_inc(u32 addr, u32 *data, u32 count);
+static int hpi_read_inc(u32 addr, u32 *buf, u32 count);
+static int hpi_write_noinc(u32 addr, u32 data);
+static u32 hpi_read_noinc(u32 addr);
+
+int hpi_test(void);
+static int hpi_write_addr_test(u32 addr);
+static int hpi_read_write_test(u32 addr, u32 data);
+static int hpi_tiny_autoinc_test(void);
+#endif /* CONFIG_SPC1920_HPI_TEST */
+
+
+/* init the host port interface on UPMA */
+int hpi_init(void)
+{
+	volatile immap_t *immr = (immap_t *) CFG_IMMR;
+	volatile memctl8xx_t *memctl = &immr->im_memctl;
+	volatile spc1920_pld_t *pld = (spc1920_pld_t *) CFG_SPC1920_PLD_BASE;
+
+	upmconfig(UPMA, (uint *)dsp_table_slow, sizeof(dsp_table_slow)/sizeof(uint));
+	udelay(100);
+
+	memctl->memc_mamr = CFG_MAMR;
+	memctl->memc_or3 = CFG_OR3;
+	memctl->memc_br3 = CFG_BR3;
+
+	/* reset dsp */
+	dsp_reset();
+
+	/* activate hpi switch*/
+	pld->dsp_hpi_on = 0x1;
+
+	udelay(100);
+
+	return 0;
+}
+
+#ifdef CONFIG_SPC1920_HPI_TEST
+/* activate the Host Port interface */
+static int hpi_activate(void)
+{
+	volatile spc1920_pld_t *pld = (spc1920_pld_t *) CFG_SPC1920_PLD_BASE;
+
+	/* turn on hpi */
+	pld->dsp_hpi_on = 0x1;
+
+	udelay(5);
+
+	/* turn on the power EN_DSP_POWER high*/
+	/* currently always on TBD */
+
+	/* setup hpi control register */
+	HPI_HPIC_1 = (u16) 0x0008;
+	HPI_HPIC_2 = (u16) 0x0008;
+
+	udelay(100);
+
+	return 0;
+}
+
+/* turn off the host port interface */
+static void hpi_inactivate(void)
+{
+	volatile spc1920_pld_t *pld = (spc1920_pld_t *) CFG_SPC1920_PLD_BASE;
+
+	/* deactivate hpi */
+	pld->dsp_hpi_on = 0x0;
+
+	/* reset the dsp */
+	/* pld->dsp_reset = 0x0; */
+
+	/* turn off the power EN_DSP_POWER# high*/
+	/* currently always on TBD */
+
+}
+
+/* reset the DSP */
+static void dsp_reset(void)
+{
+	volatile spc1920_pld_t *pld = (spc1920_pld_t *) CFG_SPC1920_PLD_BASE;
+	pld->dsp_reset = 0x1;
+	pld->dsp_hpi_on = 0x0;
+
+	udelay(300000);
+
+	pld->dsp_reset = 0x0;
+	pld->dsp_hpi_on = 0x1;
+}
+
+
+/* write using autoinc (count is number of 32bit words) */
+static int hpi_write_inc(u32 addr, u32 *data, u32 count)
+{
+	int i;
+	u16 addr1, addr2;
+
+	addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
+	addr2 = (u16) (addr & 0xffff);
+
+	/* write address */
+	HPI_HPIA_1 = addr1;
+	HPI_HPIA_2 = addr2;
+
+	debugX(4, "writing from data=0x%x to 0x%x\n", data, (data+count));
+
+	for(i=0; i<count; i++) {
+		HPI_HPID_INC_1 = (u16) ((data[i] >> 16) & 0xffff);
+		HPI_HPID_INC_2 = (u16) (data[i] & 0xffff);
+		debugX(4, "hpi_write_inc: data1=0x%x, data2=0x%x\n",
+		       (u16) ((data[i] >> 16) & 0xffff),
+		       (u16) (data[i] & 0xffff));
+	}
+#if 0
+	while(data_ptr < (u16*) (data + count)) {
+		HPI_HPID_INC_1 = *(data_ptr++);
+		HPI_HPID_INC_2 = *(data_ptr++);
+	}
+#endif
+
+	/* return number of bytes written */
+	return count;
+}
+
+/*
+ * read using autoinc (count is number of 32bit words)
+ */
+static int hpi_read_inc(u32 addr, u32 *buf, u32 count)
+{
+	int i;
+	u16 addr1, addr2, data1, data2;
+
+	addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
+	addr2 = (u16) (addr & 0xffff);
+
+	/* write address */
+	HPI_HPIA_1 = addr1;
+	HPI_HPIA_2 = addr2;
+
+	for(i=0; i<count; i++) {
+		data1 = HPI_HPID_INC_1;
+		data2 = HPI_HPID_INC_2;
+		debugX(4, "hpi_read_inc: data1=0x%x, data2=0x%x\n", data1, data2);
+		buf[i] = (((u32) data1) << 16) | (data2 & 0xffff);
+	}
+
+#if 0
+	while(buf_ptr < (u16*) (buf + count)) {
+		*(buf_ptr++) = HPI_HPID_INC_1;
+		*(buf_ptr++) = HPI_HPID_INC_2;
+	}
+#endif
+
+	/* return number of bytes read */
+	return count;
+}
+
+
+/* write to non- auto inc regs */
+static int hpi_write_noinc(u32 addr, u32 data)
+{
+
+	u16 addr1, addr2, data1, data2;
+
+	addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
+	addr2 = (u16) (addr & 0xffff);
+
+	/* printf("hpi_write_noinc: addr1=0x%x, addr2=0x%x\n", addr1, addr2); */
+
+	HPI_HPIA_1 = addr1;
+	HPI_HPIA_2 = addr2;
+
+	data1 = (u16) ((data >> 16) & 0xffff);
+	data2 = (u16) (data & 0xffff);
+
+	/* printf("hpi_write_noinc: data1=0x%x, data2=0x%x\n", data1, data2); */
+
+	HPI_HPID_NOINC_1 = data1;
+	HPI_HPID_NOINC_2 = data2;
+
+	return 0;
+}
+
+/* read from non- auto inc regs */
+static u32 hpi_read_noinc(u32 addr)
+{
+	u16 addr1, addr2, data1, data2;
+	u32 ret;
+
+	addr1 = (u16) ((addr >> 16) & 0xffff); /* First HW is most significant */
+	addr2 = (u16) (addr & 0xffff);
+
+	HPI_HPIA_1 = addr1;
+	HPI_HPIA_2 = addr2;
+
+	/* printf("hpi_read_noinc: addr1=0x%x, addr2=0x%x\n", addr1, addr2); */
+
+	data1 = HPI_HPID_NOINC_1;
+	data2 = HPI_HPID_NOINC_2;
+
+	/* printf("hpi_read_noinc: data1=0x%x, data2=0x%x\n", data1, data2); */
+
+	ret = (((u32) data1) << 16) | (data2 & 0xffff);
+	return ret;
+
+}
+
+/*
+ * Host Port Interface Tests
+ */
+
+#ifndef HPI_TEST_OSZI
+/* main test function */
+int hpi_test(void)
+{
+	int err = 0;
+	u32 i, ii, pattern, tmp;
+
+	pattern = HPI_TEST_PATTERN;
+
+	u32 test_data[HPI_TEST_CHUNKSIZE];
+	u32 read_data[HPI_TEST_CHUNKSIZE];
+
+	debugX(2, "hpi_test: activating hpi...");
+	hpi_activate();
+	debugX(2, "OK.\n");
+
+#if 0
+	/* Dump the first 1024 bytes
+	 *
+	 */
+	for(i=0; i<1024; i+=4) {
+		if(i%16==0)
+			printf("\n0x%08x: ", i);
+		printf("0x%08x ", hpi_read_noinc(i));
+	}
+#endif
+
+	/* HPIA read-write test
+	 *
+	 */
+	debugX(1, "hpi_test: starting HPIA read-write tests...\n");
+	err |= hpi_write_addr_test(0xdeadc0de);
+	err |= hpi_write_addr_test(0xbeefd00d);
+	err |= hpi_write_addr_test(0xabcd1234);
+	err |= hpi_write_addr_test(0xaaaaaaaa);
+	if(err) {
+		debugX(1, "hpi_test: HPIA read-write tests: *** FAILED ***\n");
+		return -1;
+	}
+	debugX(1, "hpi_test: HPIA read-write tests: OK\n");
+
+
+	/* read write test using nonincremental data regs
+	 *
+	 */
+	debugX(1, "hpi_test: starting nonincremental tests...\n");
+	for(i=HPI_TEST_START; i<HPI_TEST_END; i+=4) {
+		err |= hpi_read_write_test(i, pattern);
+
+		/* stolen from cmd_mem.c */
+		if(pattern & 0x80000000) {
+			pattern = -pattern;	/* complement & increment */
+		} else {
+			pattern = ~pattern;
+		}
+		err |= hpi_read_write_test(i, pattern);
+
+		if(err) {
+			debugX(1, "hpi_test: nonincremental tests *** FAILED ***\n");
+			return -1;
+		}
+	}
+	debugX(1, "hpi_test: nonincremental test OK\n");
+
+	/* read write a chunk of data using nonincremental data regs
+	 *
+	 */
+	debugX(1, "hpi_test: starting nonincremental chunk tests...\n");
+	pattern = HPI_TEST_PATTERN;
+	for(i=HPI_TEST_START; i<HPI_TEST_END; i+=4) {
+		hpi_write_noinc(i, pattern);
+
+		/* stolen from cmd_mem.c */
+		if(pattern & 0x80000000) {
+			pattern = -pattern;	/* complement & increment */
+		} else {
+			pattern = ~pattern;
+		}
+	}
+	pattern = HPI_TEST_PATTERN;
+	for(i=HPI_TEST_START; i<HPI_TEST_END; i+=4) {
+		tmp = hpi_read_noinc(i);
+
+		if(tmp != pattern) {
+			debugX(1, "hpi_test: noninc chunk test *** FAILED *** @ 0x%x, written=0x%x, read=0x%x\n", i, pattern, tmp);
+			err = -1;
+		}
+		/* stolen from cmd_mem.c */
+		if(pattern & 0x80000000) {
+			pattern = -pattern;	/* complement & increment */
+		} else {
+			pattern = ~pattern;
+		}
+	}
+	if(err)
+		return -1;
+	debugX(1, "hpi_test: nonincremental chunk test OK\n");
+
+
+#ifdef DO_TINY_TEST
+	/* small verbose test using autoinc and nonautoinc to compare
+	 *
+	 */
+	debugX(1, "hpi_test: tiny_autoinc_test...\n");
+	hpi_tiny_autoinc_test();
+	debugX(1, "hpi_test: tiny_autoinc_test done\n");
+#endif /* DO_TINY_TEST */
+
+
+	/* $%& write a chunk of data using the autoincremental regs
+	 *
+	 */
+	debugX(1, "hpi_test: starting autoinc test %d chunks with 0x%x bytes...\n",
+	       ((HPI_TEST_END - HPI_TEST_START) / HPI_TEST_CHUNKSIZE),
+	       HPI_TEST_CHUNKSIZE);
+
+	for(i=HPI_TEST_START;
+	    i < ((HPI_TEST_END - HPI_TEST_START) / HPI_TEST_CHUNKSIZE);
+	    i++) {
+		/* generate the pattern data */
+		debugX(3, "generating pattern data: ");
+		for(ii = 0; ii < HPI_TEST_CHUNKSIZE; ii++) {
+			debugX(3, "0x%x ", pattern);
+
+			test_data[ii] = pattern;
+			read_data[ii] = 0x0; /* zero to be sure */
+
+			/* stolen from cmd_mem.c */
+			if(pattern & 0x80000000) {
+				pattern = -pattern;	/* complement & increment */
+			} else {
+				pattern = ~pattern;
+			}
+		}
+		debugX(3, "done\n");
+
+		debugX(2, "Writing autoinc data @ 0x%x\n", i);
+		hpi_write_inc(i, test_data, HPI_TEST_CHUNKSIZE);
+
+		debugX(2, "Reading autoinc data @ 0x%x\n", i);
+		hpi_read_inc(i, read_data, HPI_TEST_CHUNKSIZE);
+
+		/* compare */
+		for(ii = 0; ii < HPI_TEST_CHUNKSIZE; ii++) {
+			debugX(3, "hpi_test_autoinc: @ 0x%x, written=0x%x, read=0x%x", i+ii, test_data[ii], read_data[ii]);
+			if(read_data[ii] != test_data[ii]) {
+				debugX(0, "hpi_test: autoinc test @ 0x%x, written=0x%x, read=0x%x *** FAILED ***\n", i+ii, test_data[ii], read_data[ii]);
+				return -1;
+			}
+		}
+	}
+	debugX(1, "hpi_test: autoinc test OK\n");
+
+	return 0;
+}
+#else /* HPI_TEST_OSZI */
+int hpi_test(void)
+{
+	int i;
+	u32 read_data[TINY_AUTOINC_DATA_SIZE];
+
+	unsigned int dummy_data[TINY_AUTOINC_DATA_SIZE] = {
+		0x11112222, 0x33334444, 0x55556666, 0x77778888,
+		0x9999aaaa, 0xbbbbcccc, 0xddddeeee, 0xffff1111,
+		0x00010002, 0x00030004, 0x00050006, 0x00070008,
+		0x0009000a, 0x000b000c, 0x000d000e, 0x000f0001
+	};
+
+	debugX(0, "hpi_test: activating hpi...");
+	hpi_activate();
+	debugX(0, "OK.\n");
+
+	while(1) {
+		led9(1);
+		debugX(0, " writing to autoinc...\n");
+		hpi_write_inc(TINY_AUTOINC_BASE_ADDR,
+			      dummy_data, TINY_AUTOINC_DATA_SIZE);
+
+		debugX(0, " reading from autoinc...\n");
+		hpi_read_inc(TINY_AUTOINC_BASE_ADDR,
+			     read_data, TINY_AUTOINC_DATA_SIZE);
+
+		for(i=0; i < (TINY_AUTOINC_DATA_SIZE); i++) {
+			debugX(0, " written=0x%x, read(inc)=0x%x\n",
+			       dummy_data[i], read_data[i]);
+		}
+		led9(0);
+		udelay(2000000);
+	}
+	return 0;
+}
+#endif
+
+/* test if Host Port Address Register can be written correctly */
+static int hpi_write_addr_test(u32 addr)
+{
+	u32 read_back;
+	/* write address */
+	HPI_HPIA_1 = ((u16) (addr >> 16)); /* First HW is most significant */
+	HPI_HPIA_2 = ((u16) addr);
+
+	read_back = (((u32) HPI_HPIA_1)<<16) | ((u32) HPI_HPIA_2);
+
+	if(read_back == addr) {
+		debugX(2, " hpi_write_addr_test OK: written=0x%x, read=0x%x\n",
+		       addr, read_back);
+		return 0;
+	} else {
+		debugX(0, " hpi_write_addr_test *** FAILED ***: written=0x%x, read=0x%x\n",
+		      addr, read_back);
+		return -1;
+	}
+
+	return 0;
+}
+
+/* test if a simple read/write sequence succeeds */
+static int hpi_read_write_test(u32 addr, u32 data)
+{
+	u32 read_back;
+
+	hpi_write_noinc(addr, data);
+	read_back = hpi_read_noinc(addr);
+
+	if(read_back == data) {
+		debugX(2, " hpi_read_write_test: OK, addr=0x%x written=0x%x, read=0x%x\n", addr, data, read_back);
+		return 0;
+	} else {
+		debugX(0, " hpi_read_write_test: *** FAILED ***, addr=0x%x written=0x%x, read=0x%x\n", addr, data, read_back);
+		return -1;
+	}
+
+	return 0;
+}
+
+static int hpi_tiny_autoinc_test(void)
+{
+	int i;
+	u32 read_data[TINY_AUTOINC_DATA_SIZE];
+	u32 read_data_noinc[TINY_AUTOINC_DATA_SIZE];
+
+	unsigned int dummy_data[TINY_AUTOINC_DATA_SIZE] = {
+		0x11112222, 0x33334444, 0x55556666, 0x77778888,
+		0x9999aaaa, 0xbbbbcccc, 0xddddeeee, 0xffff1111,
+		0x00010002, 0x00030004, 0x00050006, 0x00070008,
+		0x0009000a, 0x000b000c, 0x000d000e, 0x000f0001
+	};
+
+	printf(" writing to autoinc...\n");
+	hpi_write_inc(TINY_AUTOINC_BASE_ADDR, dummy_data, TINY_AUTOINC_DATA_SIZE);
+
+	printf(" reading from autoinc...\n");
+	hpi_read_inc(TINY_AUTOINC_BASE_ADDR, read_data, TINY_AUTOINC_DATA_SIZE);
+
+	printf(" reading from noinc for comparison...\n");
+	for(i=0; i < (TINY_AUTOINC_DATA_SIZE); i++)
+		read_data_noinc[i] = hpi_read_noinc(TINY_AUTOINC_BASE_ADDR+i*4);
+
+	for(i=0; i < (TINY_AUTOINC_DATA_SIZE); i++) {
+		printf(" written=0x%x, read(inc)=0x%x, read(noinc)=0x%x\n",
+		       dummy_data[i], read_data[i], read_data_noinc[i]);
+	}
+	return 0;
+}
+
+#endif /* CONFIG_SPC1920_HPI_TEST */
diff --git a/board/spc1920/hpi.h b/board/spc1920/hpi.h
new file mode 100644
index 0000000..4503873
--- /dev/null
+++ b/board/spc1920/hpi.h
@@ -0,0 +1,28 @@
+/*
+ * (C) Copyright 2006
+ * Markus Klotzbuecher, DENX Software Engineering, mk@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
+ */
+
+int hpi_init(void);
+
+#ifdef CONFIG_SPC1920_HPI_TEST
+int hpi_test(void);
+#endif
diff --git a/board/spc1920/pld.h b/board/spc1920/pld.h
index 3254f82..5beb71b 100644
--- a/board/spc1920/pld.h
+++ b/board/spc1920/pld.h
@@ -5,8 +5,8 @@ typedef struct spc1920_pld {
 	uchar com1_en;
 	uchar dsp_reset;
 	uchar dsp_hpi_on;
+	uchar superv_mode;
 	uchar codec_dsp_power_en;
-	uchar clk2_en;
 	uchar clk3_select;
 	uchar clk4_select;
 } spc1920_pld_t;
diff --git a/board/spc1920/spc1920.c b/board/spc1920/spc1920.c
index 028f4c6..1f5dcb5 100644
--- a/board/spc1920/spc1920.c
+++ b/board/spc1920/spc1920.c
@@ -27,9 +27,9 @@
 #include <common.h>
 #include <mpc8xx.h>
 #include "pld.h"
+#include "hpi.h"
 
 #define	_NOT_USED_	0xFFFFFFFF
-/* #define debug(fmt,args...)     printf (fmt ,##args) */
 
 static long int dram_size (long int, long int *, long int);
 
@@ -172,10 +172,12 @@ long int initdram (int board_type)
 	memctl->memc_br1 = (CFG_SDRAM_BASE & BR_BA_MSK) | BR_MS_UPMB | BR_V;
 	udelay (1000);
 
+	/* initalize the DSP Host Port Interface */
+	hpi_init();
 
-	/* PLD Setup */
-	memctl->memc_or5 = CFG_OR5_PRELIM;
-	memctl->memc_br5 = CFG_BR5_PRELIM;
+	/* FRAM Setup */
+	memctl->memc_or4 = CFG_OR4;
+	memctl->memc_br4 = CFG_BR4;
 	udelay(1000);
 
 	return (size_b0);
@@ -207,13 +209,31 @@ int board_early_init_f(void)
 {
 	volatile immap_t *immap = (immap_t *) CFG_IMMR;
 
+	/* Set Go/NoGo led (PA15) to color red */
+	immap->im_ioport.iop_papar &= ~0x1;
+	immap->im_ioport.iop_paodr &= ~0x1;
+	immap->im_ioport.iop_padir |= 0x1;
+	immap->im_ioport.iop_padat |= 0x1;
 
+#if 0
 	/* Turn on LED PD9 */
 	immap->im_ioport.iop_pdpar &= ~(0x0040);
 	immap->im_ioport.iop_pddir |= 0x0040;
 	immap->im_ioport.iop_pddat |= 0x0040;
+#endif
+
+	/*
+	 * Enable console on SMC1. This requires turning on
+	 * the com2_en signal and SMC1_DISABLE
+	 */
+
+	/* SMC1_DISABLE: PB17 */
+	immap->im_cpm.cp_pbodr &= ~0x4000;
+	immap->im_cpm.cp_pbpar &= ~0x4000;
+	immap->im_cpm.cp_pbdir |= 0x4000;
+	immap->im_cpm.cp_pbdat &= ~0x4000;
 
-	/* Enable PD10 (COM2_EN) */
+	/* COM2_EN: PD10 */
 	immap->im_ioport.iop_pdpar &= ~0x0020;
 	immap->im_ioport.iop_pddir &= ~0x4000;
 	immap->im_ioport.iop_pddir |= 0x0020;
@@ -228,6 +248,14 @@ int board_early_init_f(void)
 	return 0;
 }
 
+int last_stage_init(void)
+{
+#ifdef CONFIG_SPC1920_HPI_TEST
+	printf("CMB1920 Host Port Interface Test: %s\n",
+	       hpi_test() ? "Failed!" : "OK");
+#endif
+	return 0;
+}
 
 int checkboard (void)
 {
diff --git a/cpu/mpc8xx/serial.c b/cpu/mpc8xx/serial.c
index 8ae584f..c8caa79 100644
--- a/cpu/mpc8xx/serial.c
+++ b/cpu/mpc8xx/serial.c
@@ -227,8 +227,17 @@ static int smc_init (void)
 	sp->smc_smcm = 0;
 	sp->smc_smce = 0xff;
 
-#ifdef CFG_SPC1920_SMC1_CLK4 /* clock source is PLD */
-	*((volatile uchar *) CFG_SPC1920_PLD_BASE+6) = 0xff;
+#ifdef CFG_SPC1920_SMC1_CLK4
+	/* clock source is PLD */
+	
+	/* set freq to 19200 Baud */
+	*((volatile uchar *) CFG_SPC1920_PLD_BASE+6) = 0x3;
+	/* configure clk4 as input */
+	im->im_ioport.iop_pdpar |= 0x800;
+	im->im_ioport.iop_pddir &= ~0x800;
+	
+	cp->cp_simode = 0x0000;
+        cp->cp_simode |= 0x7000;
 #else
 	/* Set up the baud rate generator */
 	smc_setbrg ();
diff --git a/include/configs/spc1920.h b/include/configs/spc1920.h
index 9d3609a..09bbebd 100644
--- a/include/configs/spc1920.h
+++ b/include/configs/spc1920.h
@@ -44,19 +44,19 @@
 #define CONFIG_BAUDRATE		19200
 
 /* use PLD CLK4 instead of brg */
-#undef CFG_SPC1920_SMC1_CLK4
+#define CFG_SPC1920_SMC1_CLK4
 
 #define CONFIG_8xx_OSCLK		10000000 /* 10 MHz oscillator on EXTCLK  */
 #define CONFIG_8xx_CPUCLK_DEFAULT	50000000
 #define CFG_8xx_CPUCLK_MIN		40000000
 #define CFG_8xx_CPUCLK_MAX		133000000
 
-#define CFG_RESET_ADDRESS		0xf8000000
+#define CFG_RESET_ADDRESS		0xC0000000
 
 #define CONFIG_BOARD_EARLY_INIT_F
+#define CONFIG_LAST_STAGE_INIT
 
-
-#if 1
+#if 0
 #define CONFIG_BOOTDELAY	-1	/* autoboot disabled		*/
 #else
 #define CONFIG_BOOTDELAY	5	/* autoboot after 5 seconds	*/
@@ -83,12 +83,13 @@
 #ifndef CONFIG_COMMANDS
 #define CONFIG_COMMANDS	(CONFIG_CMD_DFL   \
 			 | CFG_CMD_ASKENV \
+			 | CFG_CMD_DATE \
 			 | CFG_CMD_ECHO   \
 			 | CFG_CMD_IMMAP  \
 			 | CFG_CMD_JFFS2 \
 			 | CFG_CMD_PING \
 			 | CFG_CMD_DHCP \
-			 | CFG_CMD_IMMAP \
+			 | CFG_CMD_I2C \
 			 | CFG_CMD_MII)
 			/* & ~( CFG_CMD_NET)) */
 
@@ -193,13 +194,39 @@
 #define CFG_CACHELINE_SIZE	16	/* For all MPC8xx CPUs			*/
 #define CFG_CACHELINE_SHIFT	4	/* log base 2 of the above value	*/
 
+#ifdef CFG_CMD_DATE
+# define CONFIG_RTC_DS3231
+# define CFG_I2C_RTC_ADDR      0x68
+#endif
+
 /*-----------------------------------------------------------------------
  * I2C configuration
  */
 #if (CONFIG_COMMANDS & CFG_CMD_I2C)
-#define CONFIG_HARD_I2C		1	/* I2C with hardware support */
-#define CFG_I2C_SPEED		400000	/* I2C speed and slave address defaults */
-#define CFG_I2C_SLAVE		0x7F
+/* enable I2C and select the hardware/software driver */
+#undef CONFIG_HARD_I2C                 /* I2C with hardware support    */
+#define CONFIG_SOFT_I2C                1       /* I2C bit-banged               */
+
+#define CFG_I2C_SPEED          93000   /* 93 kHz is supposed to work   */
+#define CFG_I2C_SLAVE          0xFE
+
+#ifdef CONFIG_SOFT_I2C
+/*
+ * Software (bit-bang) I2C driver configuration
+ */
+#define PB_SCL         0x00000020      /* PB 26 */
+#define PB_SDA         0x00000010      /* PB 27 */
+
+#define I2C_INIT       (immr->im_cpm.cp_pbdir |=  PB_SCL)
+#define I2C_ACTIVE     (immr->im_cpm.cp_pbdir |=  PB_SDA)
+#define I2C_TRISTATE   (immr->im_cpm.cp_pbdir &= ~PB_SDA)
+#define I2C_READ       ((immr->im_cpm.cp_pbdat & PB_SDA) != 0)
+#define I2C_SDA(bit)   if(bit) immr->im_cpm.cp_pbdat |=  PB_SDA; \
+		       else    immr->im_cpm.cp_pbdat &= ~PB_SDA
+#define I2C_SCL(bit)   if(bit) immr->im_cpm.cp_pbdat |=  PB_SCL; \
+		       else    immr->im_cpm.cp_pbdat &= ~PB_SCL
+#define I2C_DELAY      udelay(2)       /* 1/4 I2C clock duration */
+#endif /* CONFIG_SOFT_I2C */
 #endif
 
 /*-----------------------------------------------------------------------
@@ -220,7 +247,7 @@
  *-----------------------------------------------------------------------
  * PCMCIA config., multi-function pin tri-state
  */
-#define CFG_SIUMCR	(SIUMCR_DBGC00 | SIUMCR_DBPC00 | SIUMCR_MLRC01)
+#define CFG_SIUMCR      (SIUMCR_FRC)
 
 /*-----------------------------------------------------------------------
  * TBSCR - Time Base Status and Control				11-26
@@ -283,7 +310,7 @@
  * FLASH timing:
  */
 #define CFG_OR_TIMING_FLASH	(OR_ACS_DIV1  | OR_TRLX | OR_CSNT_SAM | \
-				 OR_SCY_3_CLK | OR_EHTR | OR_BI)
+				 OR_SCY_6_CLK | OR_EHTR | OR_BI)
 
 #define CFG_OR0_REMAP	(CFG_REMAP_OR_AM  | CFG_OR_TIMING_FLASH)
 #define CFG_OR0_PRELIM	(CFG_PRELIM_OR_AM | CFG_OR_TIMING_FLASH)
@@ -330,7 +357,56 @@
 			MBMR_TLFB_4X) /* 0x04804114 */ /* 0x10802114 */
 
 
-/* PLD CS5 */
+/*
+ * DSP Host Port Interface CS3
+ */
+#define CFG_SPC1920_HPI_BASE   0x90000000
+#define CFG_PRELIM_OR3_AM      0xF8000000
+
+#define CFG_OR3         (CFG_PRELIM_OR3_AM | \
+				       OR_G5LS | \
+				       OR_SCY_0_CLK | \
+				       OR_BI)
+
+#define CFG_BR3 ((CFG_SPC1920_HPI_BASE & BR_BA_MSK) | \
+					       BR_MS_UPMA | \
+					       BR_PS_16 | \
+					       BR_V);
+
+#define CFG_MAMR (MAMR_GPL_A4DIS | \
+		MAMR_RLFA_5X | \
+		MAMR_WLFA_5X)
+
+#define CONFIG_SPC1920_HPI_TEST
+
+#ifdef CONFIG_SPC1920_HPI_TEST
+#define HPI_REG(x)             (*((volatile u16 *) (CFG_SPC1920_HPI_BASE + x)))
+#define HPI_HPIC_1             HPI_REG(0)
+#define HPI_HPIC_2             HPI_REG(2)
+#define HPI_HPIA_1             HPI_REG(0x2000008)
+#define HPI_HPIA_2             HPI_REG(0x2000008 + 2)
+#define HPI_HPID_INC_1         HPI_REG(0x1000004)
+#define HPI_HPID_INC_2         HPI_REG(0x1000004 + 2)
+#define HPI_HPID_NOINC_1       HPI_REG(0x300000c)
+#define HPI_HPID_NOINC_2       HPI_REG(0x300000c + 2)
+#endif /* CONFIG_SPC1920_HPI_TEST */
+
+/*
+ * Ramtron FM18L08 FRAM 32KB on CS4
+ */
+#define CFG_SPC1920_FRAM_BASE	0x80100000
+#define CFG_PRELIM_OR4_AM	0xffff8000
+#define CFG_OR4		(CFG_PRELIM_OR4_AM | \
+					OR_ACS_DIV2 | \
+					OR_BI | \
+					OR_SCY_4_CLK | \
+					OR_TRLX)
+
+#define CFG_BR4 ((CFG_SPC1920_FRAM_BASE & BR_BA_MSK) | BR_PS_8 | BR_V);
+
+/*
+ * PLD CS5
+ */
 #define CFG_SPC1920_PLD_BASE	0x80000000
 #define CFG_PRELIM_OR5_AM	0xffff8000
 
@@ -343,10 +419,6 @@
 
 #define CFG_BR5_PRELIM ((CFG_SPC1920_PLD_BASE & BR_BA_MSK) | BR_PS_8 | BR_V);
 
-/* #define CFG_PLD_BASE   0x30000000 */
-/* #define CFG_OR5_PRELIM 0xffff1110 */
-/* #define CFG_BR5_PRELIM 0x30000401 */
-
 /*
  * Internal Definitions
  *
diff --git a/rtc/Makefile b/rtc/Makefile
index cf2b24e..cdc8ac9 100644
--- a/rtc/Makefile
+++ b/rtc/Makefile
@@ -29,7 +29,7 @@ LIB	= $(obj)librtc.a
 
 COBJS	= date.o   \
 	  bf533_rtc.o ds12887.o ds1302.o ds1306.o ds1307.o \
-	  ds1337.o ds1374.o ds1556.o ds164x.o ds174x.o \
+	  ds1337.o ds1374.o ds1556.o ds164x.o ds174x.o ds3231.o \
 	  m41t11.o max6900.o m48t35ax.o mc146818.o mk48t59.o \
 	  mpc5xxx.o mpc8xx.o pcf8563.o s3c24x0_rtc.o rs5c372.o
 
diff --git a/rtc/ds3231.c b/rtc/ds3231.c
new file mode 100644
index 0000000..50aeeb5
--- /dev/null
+++ b/rtc/ds3231.c
@@ -0,0 +1,193 @@
+/*
+ * (C) Copyright 2006
+ * Markus Klotzbuecher, mk@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
+ */
+
+/*
+ * Date & Time support (no alarms) for Dallas Semiconductor (now Maxim)
+ * Extremly Accurate DS3231 Real Time Clock (RTC).
+ *
+ * copied from ds1337.c
+ */
+
+#include <common.h>
+#include <command.h>
+#include <rtc.h>
+#include <i2c.h>
+
+#if defined(CONFIG_RTC_DS3231) && (CONFIG_COMMANDS & CFG_CMD_DATE)
+
+/*---------------------------------------------------------------------*/
+#undef DEBUG_RTC
+
+#ifdef DEBUG_RTC
+#define DEBUGR(fmt,args...) printf(fmt ,##args)
+#else
+#define DEBUGR(fmt,args...)
+#endif
+/*---------------------------------------------------------------------*/
+
+/*
+ * RTC register addresses
+ */
+#define RTC_SEC_REG_ADDR	0x0
+#define RTC_MIN_REG_ADDR	0x1
+#define RTC_HR_REG_ADDR		0x2
+#define RTC_DAY_REG_ADDR	0x3
+#define RTC_DATE_REG_ADDR	0x4
+#define RTC_MON_REG_ADDR	0x5
+#define RTC_YR_REG_ADDR		0x6
+#define RTC_CTL_REG_ADDR	0x0e
+#define RTC_STAT_REG_ADDR	0x0f
+
+
+/*
+ * RTC control register bits
+ */
+#define RTC_CTL_BIT_A1IE	0x1	/* Alarm 1 interrupt enable     */
+#define RTC_CTL_BIT_A2IE	0x2	/* Alarm 2 interrupt enable     */
+#define RTC_CTL_BIT_INTCN	0x4	/* Interrupt control            */
+#define RTC_CTL_BIT_RS1		0x8	/* Rate select 1                */
+#define RTC_CTL_BIT_RS2		0x10	/* Rate select 2                */
+#define RTC_CTL_BIT_DOSC	0x80	/* Disable Oscillator           */
+
+/*
+ * RTC status register bits
+ */
+#define RTC_STAT_BIT_A1F	0x1	/* Alarm 1 flag                 */
+#define RTC_STAT_BIT_A2F	0x2	/* Alarm 2 flag                 */
+#define RTC_STAT_BIT_OSF	0x80	/* Oscillator stop flag         */
+
+
+static uchar rtc_read (uchar reg);
+static void rtc_write (uchar reg, uchar val);
+static uchar bin2bcd (unsigned int n);
+static unsigned bcd2bin (uchar c);
+
+
+/*
+ * Get the current time from the RTC
+ */
+void rtc_get (struct rtc_time *tmp)
+{
+	uchar sec, min, hour, mday, wday, mon_cent, year, control, status;
+
+	control = rtc_read (RTC_CTL_REG_ADDR);
+	status = rtc_read (RTC_STAT_REG_ADDR);
+	sec = rtc_read (RTC_SEC_REG_ADDR);
+	min = rtc_read (RTC_MIN_REG_ADDR);
+	hour = rtc_read (RTC_HR_REG_ADDR);
+	wday = rtc_read (RTC_DAY_REG_ADDR);
+	mday = rtc_read (RTC_DATE_REG_ADDR);
+	mon_cent = rtc_read (RTC_MON_REG_ADDR);
+	year = rtc_read (RTC_YR_REG_ADDR);
+
+	DEBUGR ("Get RTC year: %02x mon/cent: %02x mday: %02x wday: %02x "
+		"hr: %02x min: %02x sec: %02x control: %02x status: %02x\n",
+		year, mon_cent, mday, wday, hour, min, sec, control, status);
+
+	if (status & RTC_STAT_BIT_OSF) {
+		printf ("### Warning: RTC oscillator has stopped\n");
+		/* clear the OSF flag */
+		rtc_write (RTC_STAT_REG_ADDR,
+			   rtc_read (RTC_STAT_REG_ADDR) & ~RTC_STAT_BIT_OSF);
+	}
+
+	tmp->tm_sec  = bcd2bin (sec & 0x7F);
+	tmp->tm_min  = bcd2bin (min & 0x7F);
+	tmp->tm_hour = bcd2bin (hour & 0x3F);
+	tmp->tm_mday = bcd2bin (mday & 0x3F);
+	tmp->tm_mon  = bcd2bin (mon_cent & 0x1F);
+	tmp->tm_year = bcd2bin (year) + ((mon_cent & 0x80) ? 2000 : 1900);
+	tmp->tm_wday = bcd2bin ((wday - 1) & 0x07);
+	tmp->tm_yday = 0;
+	tmp->tm_isdst= 0;
+
+	DEBUGR ("Get DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",
+		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
+		tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
+}
+
+
+/*
+ * Set the RTC
+ */
+void rtc_set (struct rtc_time *tmp)
+{
+	uchar century;
+
+	DEBUGR ("Set DATE: %4d-%02d-%02d (wday=%d)  TIME: %2d:%02d:%02d\n",
+		tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday,
+		tmp->tm_hour, tmp->tm_min, tmp->tm_sec);
+
+	rtc_write (RTC_YR_REG_ADDR, bin2bcd (tmp->tm_year % 100));
+
+	century = (tmp->tm_year >= 2000) ? 0x80 : 0;
+	rtc_write (RTC_MON_REG_ADDR, bin2bcd (tmp->tm_mon) | century);
+
+	rtc_write (RTC_DAY_REG_ADDR, bin2bcd (tmp->tm_wday + 1));
+	rtc_write (RTC_DATE_REG_ADDR, bin2bcd (tmp->tm_mday));
+	rtc_write (RTC_HR_REG_ADDR, bin2bcd (tmp->tm_hour));
+	rtc_write (RTC_MIN_REG_ADDR, bin2bcd (tmp->tm_min));
+	rtc_write (RTC_SEC_REG_ADDR, bin2bcd (tmp->tm_sec));
+}
+
+
+/*
+ * Reset the RTC.  We also enable the oscillator output on the
+ * SQW/INTB* pin and program it for 32,768 Hz output. Note that
+ * according to the datasheet, turning on the square wave output
+ * increases the current drain on the backup battery from about
+ * 600 nA to 2uA.
+ */
+void rtc_reset (void)
+{
+	rtc_write (RTC_CTL_REG_ADDR, RTC_CTL_BIT_RS1 | RTC_CTL_BIT_RS2);
+}
+
+
+/*
+ * Helper functions
+ */
+
+static
+uchar rtc_read (uchar reg)
+{
+	return (i2c_reg_read (CFG_I2C_RTC_ADDR, reg));
+}
+
+
+static void rtc_write (uchar reg, uchar val)
+{
+	i2c_reg_write (CFG_I2C_RTC_ADDR, reg, val);
+}
+
+static unsigned bcd2bin (uchar n)
+{
+	return ((((n >> 4) & 0x0F) * 10) + (n & 0x0F));
+}
+
+static unsigned char bin2bcd (unsigned int n)
+{
+	return (((n / 10) << 4) | (n % 10));
+}
+
+#endif /* (CONFIG_RTC_DS3231) && (CONFIG_COMMANDS & CFG_CMD_DATE) */