From: Grazvydas Ignotas <notasas@gmail.com>
Date: Tue, 22 Nov 2011 15:03:23 +0000 (+0200)
Subject: k9f1g08r0a: add support for reading parameter page
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d1ead6f8d9b05149d22577936a70489c4990ff4f;p=pandora-x-loader.git

k9f1g08r0a: add support for reading parameter page

this allows to read full NAND model name, which is useful to
distinguish between POP parts that both have the same manufacturer/device
id, but different RAM.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
---

diff --git a/drivers/k9f1g08r0a.c b/drivers/k9f1g08r0a.c
index b039b50..eeb17c1 100644
--- a/drivers/k9f1g08r0a.c
+++ b/drivers/k9f1g08r0a.c
@@ -177,6 +177,35 @@ int nand_readid(int *mfr, int *id)
 	return 0;
 }
 
+/* reads parameter page */
+int nand_read_param_page(unsigned char *data, unsigned int size)
+{
+	unsigned int i;
+
+	NAND_ENABLE_CE();
+
+	if (NanD_Command(NAND_CMD_RESET)) {
+		NAND_DISABLE_CE();
+		return 1;
+	}
+
+	if (NanD_Command(NAND_CMD_READPARAM)) {
+		NAND_DISABLE_CE();
+		return 1;
+	}
+
+	NanD_Address(ADDR_COLUMN, 0);
+	delay(10000);
+
+	for (i = 0; i < size; i++) {
+		data[i] = READ_NAND(NAND_ADDR);
+		delay(10);
+	}
+
+	NAND_DISABLE_CE();
+	return 0;
+}
+
 /* read chip mfr and id
  * return 0 if they match board config
  * return 1 if not
diff --git a/include/common.h b/include/common.h
index a3c5092..9cf3f3a 100644
--- a/include/common.h
+++ b/include/common.h
@@ -75,6 +75,7 @@ void 	udelay (unsigned long usec);
 #define NAND_CMD_READOOB	0x50
 #define NAND_CMD_STATUS		0x70
 #define NAND_CMD_READID		0x90
+#define NAND_CMD_READPARAM	0xec
 #define NAND_CMD_RESET		0xff
 
 /* Extended Commands for Large page devices */
@@ -82,6 +83,8 @@ void 	udelay (unsigned long usec);
 
 int 	nand_chip(void);
 int 	nand_read_block(uchar *buf, ulong block_addr);
+int	nand_readid(int *mfr, int *id);
+int	nand_read_param_page(unsigned char *data, unsigned int size);
 
 int 	onenand_chip(void);
 int	onenand_read_block(unsigned char *buf, ulong block);