Merge with /home/m8/git/u-boot/
diff --git a/CHANGELOG b/CHANGELOG
index 3403d06..41040ef 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,90 @@
+commit 787fa15860a57833e50bd30555079a9cd4e519b8
+Author: Wolfgang Denk <wd@pollux.denx.de>
+Date: Wed Jan 10 01:28:39 2007 +0100
+
+ Fix auto_update for MCC200 board.
+
+ The invocation of do_auto_update() is moved to the end of the
+ misc_init_r() function, after the flash mappings have been
+ initialized. Please find attached a patch that implements that
+ change.
+
+ Also correct the decoding of the keypad status. With this update, the
+ key that will trigger the update is Column 2, Row 2.
+
+commit 67fea022fa957f59653b5238c7496f80a6b70432
+Author: Markus Klotzbuecher <mk@denx.de>
+Date: Tue Jan 9 16:02:48 2007 +0100
+
+ SPC1920: cleanup memory contoller setup
+
+commit 8fc2102faa23593c80381437c09f7745a14deb40
+Author: Markus Klotzbuecher <mk@denx.de>
+Date: Tue Jan 9 14:57:14 2007 +0100
+
+ Fix the cpu speed setup to work with all boards.
+
+commit 9295acb77481cf099ef9b40e1fa2d145b3c7490c
+Author: Markus Klotzbuecher <mk@denx.de>
+Date: Tue Jan 9 14:57:13 2007 +0100
+
+ SPC1920: add support for the FM18L08 Ramtron FRAM
+
+commit 38ccd2fdf3364a53fe80e9b365303ecdafc9e223
+Author: Markus Klotzbuecher <mk@denx.de>
+Date: Tue Jan 9 14:57:13 2007 +0100
+
+ SPC1920: update the HPI register addresses to work with the second
+ generation of hardware
+
+commit 5921e5313fc3eadd42770c2b99badd7fae5ecf1e
+Author: Markus Klotzbuecher <mk@creamnet.de>
+Date: Tue Jan 9 14:57:13 2007 +0100
+
+ Miscellanious spc1920 related cleanups
+
+commit e4c2d37adc8bb1bf69dcf600cbc6c75f916a6120
+Author: Markus Klotzbuecher <mk@denx.de>
+Date: Tue Jan 9 14:57:12 2007 +0100
+
+ SPC1920 GO/NOGO led should be set to color red in U-Boot
+
+commit 0be62728aac459ba268d6d752ed49ec0e2bc7348
+Author: Markus Klotzbuecher <mk@creamnet.de>
+Date: Tue Jan 9 14:57:12 2007 +0100
+
+ Add support for the DS3231 RTC
+
+commit 8139567b60d678584b05f0718a681f2047c5e14f
+Author: Markus Klotzbuecher <mk@creamnet.de>
+Date: Tue Jan 9 14:57:11 2007 +0100
+
+ SMC1 uses external CLK4 instead of BRG on spc1920
+
+commit d8d9de1a02fbd880b613d607143d1f57342affc7
+Author: Markus Klotzbuecher <mk@creamnet.de>
+Date: Tue Jan 9 14:57:10 2007 +0100
+
+ Update the SPC1920 CMB PLD driver
+
+commit 3f34f869162750e5e999fd140f884f5de952bcfe
+Author: Markus Klotzbuecher <mk@creamnet.de>
+Date: Tue Jan 9 14:57:10 2007 +0100
+
+ Add / enable I2C support on the spc1920 board
+
+commit d28707dbce1e9ac2017ad051da4133bf22b4204f
+Author: Markus Klotzbuecher <mk@creamnet.de>
+Date: Tue Jan 9 14:57:10 2007 +0100
+
+ Add support for the tms320671x host port interface (HPI)
+
+commit f4eb54529bb3664c3a562e488b460fe075f79d67
+Author: Wolfgang Denk <wd@pollux.denx.de>
+Date: Sun Jan 7 00:13:11 2007 +0100
+
+ Prepare for release 1.2.0
+
commit f07ae7a9daef27a3d0213a4f3fe39d5342173c02
Author: Stefan Roese <sr@denx.de>
Date: Sat Jan 6 15:58:09 2007 +0100
diff --git a/board/mcc200/auto_update.c b/board/mcc200/auto_update.c
index 63e4139..f1bb721 100644
--- a/board/mcc200/auto_update.c
+++ b/board/mcc200/auto_update.c
@@ -121,10 +121,10 @@
#define I2C_PSOC_KEYPAD_ADDR 0x53
/* keypad mask */
-#define KEYPAD_ROW 3
-#define KEYPAD_COL 3
-#define KEYPAD_MASK_LO ((1<<(KEYPAD_COL-1+(KEYPAD_ROW*4-4)))&0xFF)
-#define KEYPAD_MASK_HI ((1<<(KEYPAD_COL-1+(KEYPAD_ROW*4-4)))>>8)
+#define KEYPAD_ROW 2
+#define KEYPAD_COL 2
+#define KEYPAD_MASK_LO ((1<<(KEYPAD_COL-1+(KEYPAD_ROW*3-3)))&0xFF)
+#define KEYPAD_MASK_HI ((1<<(KEYPAD_COL-1+(KEYPAD_ROW*3-3)))>>8)
/* externals */
extern int fat_register_device(block_dev_desc_t *, int);
diff --git a/board/mcc200/mcc200.c b/board/mcc200/mcc200.c
index 67969a6..554c51d 100644
--- a/board/mcc200/mcc200.c
+++ b/board/mcc200/mcc200.c
@@ -228,10 +228,6 @@
{
ulong flash_sup_end, snum;
-#ifdef CONFIG_AUTO_UPDATE
- /* this has priority over all else */
- do_auto_update();
-#endif
/*
* Adjust flash start and offset to detected values
*/
@@ -294,6 +290,9 @@
flash_info[0].sector_count = snum;
}
+#ifdef CONFIG_AUTO_UPDATE
+ do_auto_update();
+#endif
return (0);
}
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 @@
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 @@
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 @@
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 @@
{
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 PD10 (COM2_EN) */
+ /*
+ * 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;
+
+ /* 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 @@
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 @@
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 @@
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) */