Changes from NIKI

Corresponding to coreboot v1 svn r873.

1 files changed, 289 insertions, 0 deletions

diff --git a/msys_doc.c b/msys_doc.c
new file mode 100644
index 0000000..bfa4eca
--- /dev/null
+++ b/msys_doc.c
@@ -0,0 +1,289 @@
+/*
+ * msys_doc.c: driver for programming m-systems doc devices
+ *
+ *
+ * Copyright 2003   Niki W. Waibel <niki.waibel@gmx.net>
+ *
+ *	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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+
+
+#include <stdio.h>
+#include <unistd.h>
+#include "flash.h"
+#include "msys_doc.h"
+
+
+
+
+
+static int doc_wait(volatile char *bios, int timeout);
+static unsigned char doc_read_chipid(volatile char *bios);
+static unsigned char doc_read_docstatus(volatile char *bios);
+static unsigned char doc_read_cdsncontrol(volatile char *bios);
+static void doc_write_cdsncontrol(volatile char *bios, unsigned char data);
+
+
+
+
+
+int
+probe_md2802(struct flashchip * flash)
+{
+	volatile char *bios = flash->virt_addr;
+	unsigned char chipid;
+#ifndef MSYSTEMS_DOC_NO_55AA_CHECKING
+	unsigned char id_0x55, id_0xAA;
+#endif /* !MSYSTEMS_DOC_NO_55AA_CHECKING */
+	int i, toggle_a, toggle_b;
+
+	printf("%s:\n", __FUNCTION__);
+	printf("%s: *******************************\n", __FUNCTION__);
+	printf("%s: * THIS IS A PRE ALPHA VERSION *\n", __FUNCTION__);
+	printf("%s: * IN THE DEVELOPEMENT *********\n", __FUNCTION__);
+	printf("%s: * PROCESS RIGHT NOW. **********\n", __FUNCTION__);
+	printf("%s: *******************************\n", __FUNCTION__);
+	printf("%s: * IF YOU ARE NOT A DEVELOPER **\n", __FUNCTION__);
+	printf("%s: * THEN DO NOT TRY TO READ OR **\n", __FUNCTION__);
+	printf("%s: * WRITE TO THIS DEVICE ********\n", __FUNCTION__);
+	printf("%s: *******************************\n", __FUNCTION__);
+	printf("%s:\n", __FUNCTION__);
+
+	printf("%s: switching off reset mode ...\n", __FUNCTION__);
+	doc_write(0x85, bios, DOCControl);
+	doc_write(0x85, bios, DOCControl);
+	doc_read_4nop(bios);
+	if(doc_wait(bios, 5000))
+		return(-1);
+	printf("%s: switching off reset mode ... done\n", __FUNCTION__);
+	printf("%s:\n", __FUNCTION__);
+
+	printf("%s: switching off write protection ...\n", __FUNCTION__);
+	doc_write_cdsncontrol(bios, doc_read_cdsncontrol(bios)&(~0x08));
+	printf("%s: switching off write protection ... done\n", __FUNCTION__);
+	printf("%s:\n", __FUNCTION__);
+
+
+	chipid = doc_read_chipid(bios);
+#ifndef MSYSTEMS_DOC_NO_55AA_CHECKING
+	id_0x55 = doc_read(bios, IPL_0x0000);
+	id_0xAA = doc_read(bios, IPL_0x0001);
+#endif /* !MSYSTEMS_DOC_NO_55AA_CHECKING */
+	printf("%s: IPL_0x0000: 0x%02x\n", __FUNCTION__, id_0x55);
+	printf("%s: IPL_0x0001: 0x%02x\n", __FUNCTION__, id_0xAA);
+	printf("%s: IPL_0x0002: 0x%02x\n", __FUNCTION__,
+		doc_read(bios, IPL_0x0002));
+	printf("%s: IPL_0x0003: 0x%02x\n", __FUNCTION__,
+		doc_read(bios, IPL_0x0003));
+	printf("%s:\n", __FUNCTION__);
+	printf("%s: ChipID: 0x%02x\n", __FUNCTION__, chipid);
+	printf("%s: DOCStatus: 0x%02x\n", __FUNCTION__,
+		doc_read_docstatus(bios));
+	printf("%s: FloorSelect: 0x%02x\n", __FUNCTION__,
+		doc_read(bios, FloorSelect));
+	printf("%s: CDSNControl: 0x%02x\n", __FUNCTION__,
+		doc_read_cdsncontrol(bios));
+	printf("%s: CDSNDeviceSelect: 0x%02x\n", __FUNCTION__,
+		doc_read(bios, CDSNDeviceSelect));
+	printf("%s: ECCConfiguration: 0x%02x\n", __FUNCTION__,
+		doc_read(bios, ECCConfiguration));
+	printf("%s: CDSNSlowIO: 0x%02x\n", __FUNCTION__,
+		doc_read(bios, CDSNSlowIO));
+	printf("%s: ECCSyndrome0: 0x%02x\n", __FUNCTION__,
+		doc_read(bios, ECCSyndrome0));
+	printf("%s: ECCSyndrome1: 0x%02x\n", __FUNCTION__,
+		doc_read(bios, ECCSyndrome1));
+	printf("%s: ECCSyndrome2: 0x%02x\n", __FUNCTION__,
+		doc_read(bios, ECCSyndrome2));
+	printf("%s: ECCSyndrome3: 0x%02x\n", __FUNCTION__,
+		doc_read(bios, ECCSyndrome3));
+	printf("%s: ECCSyndrome4: 0x%02x\n", __FUNCTION__,
+		doc_read(bios, ECCSyndrome4));
+	printf("%s: ECCSyndrome5: 0x%02x\n", __FUNCTION__,
+		doc_read(bios, ECCSyndrome5));
+	printf("%s: AliasResolution: 0x%02x\n", __FUNCTION__,
+		doc_read(bios, AliasResolution));
+	printf("%s: ConfigurationInput: 0x%02x\n", __FUNCTION__,
+		doc_read(bios, ConfigurationInput));
+	printf("%s: ReadPipelineInitialization: 0x%02x\n", __FUNCTION__,
+		doc_read(bios, ReadPipelineInitialization));
+	printf("%s: LastDataRead: 0x%02x\n", __FUNCTION__,
+		doc_read(bios, LastDataRead));
+	printf("%s:\n", __FUNCTION__);
+
+	printf("%s: checking ECCConfiguration toggle bit\n", __FUNCTION__);
+	printf("%s:", __FUNCTION__);
+	toggle_a = toggle_b = 0;
+	for(i=0; i<10; i++)
+	{
+		unsigned char toggle = doc_toggle(bios);
+
+		printf(" 0x%02x", toggle);
+
+		if(i%2)
+			toggle_a += toggle;
+		else
+			toggle_b += toggle;
+	} /* for(i=0; i<10; i++) */
+	printf("\n%s: toggle result: %d/%d\n", __FUNCTION__, toggle_a, toggle_b);
+
+	if(chipid == flash->model_id
+		&& ((toggle_a==5 && toggle_b==0)||(toggle_a==0 && toggle_b==5))
+#ifndef MSYSTEMS_DOC_NO_55AA_CHECKING
+		&& id_0x55 == 0x55 && id_0xAA == 0xaa
+#endif /* !MSYSTEMS_DOC_NO_55AA_CHECKING */
+		)
+	{
+		return(1);
+	}
+
+	return(0);
+} /* int probe_md2802(struct flashchip *flash) */
+
+
+
+int
+read_md2802(struct flashchip *flash, unsigned char *buf)
+{
+	
+	return(0);
+} /* int read_md2802(struct flashchip *flash, unsigned char *buf) */
+
+
+
+int
+erase_md2802(struct flashchip *flash)
+{
+	volatile char *bios = flash->virt_addr;
+
+	return(1);
+	*(volatile char *)(bios + 0x5555) = 0xAA;
+	*(volatile char *)(bios + 0x2AAA) = 0x55;
+	*(volatile char *)(bios + 0x5555) = 0x80;
+
+	*(volatile char *)(bios + 0x5555) = 0xAA;
+	*(volatile char *)(bios + 0x2AAA) = 0x55;
+	*(volatile char *)(bios + 0x5555) = 0x10;
+} /* int erase_md2802(struct flashchip *flash) */
+
+
+
+int
+write_md2802(struct flashchip *flash, unsigned char *buf)
+{
+	int i;
+	int total_size = flash->total_size *1024, page_size = flash->page_size;
+	volatile unsigned char * bios = flash->virt_addr;
+
+	return(1);
+	erase_md2802 (flash);
+	if (*bios != (unsigned char ) 0xff) {
+		printf("ERASE FAILED\n");
+		return -1;
+	}
+	printf ("Programming Page: ");
+	for (i = 0; i < total_size/page_size; i++) {
+		printf ("%04d at address: 0x%08x", i, i * page_size);
+		//write_page_md2802(bios, buf + i * page_size, bios + i * page_size, page_size);
+		printf ("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
+	}
+	printf("\n");
+	//protect_md2802(bios);
+
+} /* int write_md2802(struct flashchip *flash, char *buf) */
+
+
+
+
+
+
+/*
+	wait timeout msec for doc to become ready
+	return:
+		0: ready
+		-1: timeout expired
+*/
+static int
+doc_wait(volatile char *bios, int timeout)
+{
+	int i = 20;
+
+	doc_read_4nop(bios);
+
+	while(_doc_busy(bios) && (i != 0))
+	{
+		usleep(timeout*1000/20);
+		i--;
+	}
+
+	doc_read_2nop(bios);
+
+	if(_doc_busy(bios))
+	{
+		doc_read_2nop(bios);
+		return(-1);
+	}
+
+	return(0);
+} /* static int doc_wait(volatile char *bios, int timeout) */
+
+
+
+static unsigned char
+doc_read_docstatus(volatile char *bios)
+{
+	doc_read(bios, CDSNSlowIO);
+	doc_read_2nop(bios);
+
+	return(doc_read(bios, _DOCStatus));
+} /* static unsigned char doc_read_docstatus(volatile char *bios) */
+
+
+
+static unsigned char
+doc_read_chipid(volatile char *bios)
+{
+	doc_read(bios, CDSNSlowIO);
+	doc_read_2nop(bios);
+
+	return(doc_read(bios, _ChipID));
+} /* static unsigned char doc_read_chipid(volatile char *bios) */
+
+
+
+static unsigned char
+doc_read_cdsncontrol(volatile char *bios)
+{
+	unsigned char value;
+
+	/* the delays might be necessary when reading the busy bit,
+		but because a read to this reg reads the busy bit
+		anyway we better do this delays... */
+	doc_read_4nop(bios);
+	value = doc_read(bios, _CDSNControl);
+	doc_read_2nop(bios);
+
+	return(value);
+} /* static unsigned char doc_read_chipid(volatile char *bios) */
+
+
+
+static void
+doc_write_cdsncontrol(volatile char *bios, unsigned char data)
+{
+	doc_write(data, bios, _CDSNControl);
+	doc_read_4nop(bios);
+} /* static void doc_write_chipid(volatile char *bios, unsigned char data) */