From 4d13cbad1c81ad7901151fec381bae8c30f4338a Mon Sep 17 00:00:00 2001
From: wdenk <wdenk>
Date: Sun, 14 Mar 2004 14:09:05 +0000
Subject: * Patch by Tolunay Orkun, 5 Mar 2004:   Fix early board
 initialization for Cogent CSB272 board

* Patch by Ed Okerson, 3 Mar 2004:
  fix CFI flash writes for little endian systems

* Patch by Reinhard Meyer, 01 Mar 2004:
  generalize USB and IDE support for MPC5200 with according
  changes to IceCube.h and TOP5200.h
  add Am29LV256 256 MBit FLASH support for TOP5200 boards
  add info about USB and IDE to README
---
 board/emk/common/flash.c | 96 ++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 81 insertions(+), 15 deletions(-)

(limited to 'board/emk/common/flash.c')

diff --git a/board/emk/common/flash.c b/board/emk/common/flash.c
index adfa9a0..966bb5c 100644
--- a/board/emk/common/flash.c
+++ b/board/emk/common/flash.c
@@ -40,9 +40,11 @@ flash_info_t	flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
   #define FLASH_CYCLE2	0x02aa
   #define FLASH_ID1		0
   #define FLASH_ID2		1
+  #define FLASH_ID3		0x0e
+  #define FLASH_ID4		0x0F
 #endif
 
-#if defined (CONFIG_TOP5200)
+#if defined (CONFIG_TOP5200) && !defined (CONFIG_LITE5200)
   typedef unsigned char FLASH_PORT_WIDTH;
   typedef volatile unsigned char FLASH_PORT_WIDTHV;
   #define	FLASH_ID_MASK	0xFF
@@ -54,6 +56,24 @@ flash_info_t	flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
   #define FLASH_CYCLE2	0x0555
   #define FLASH_ID1		0
   #define FLASH_ID2		2
+  #define FLASH_ID3		0x1c
+  #define FLASH_ID4		0x1E
+#endif
+
+#if defined (CONFIG_TOP5200) && defined (CONFIG_LITE5200)
+  typedef unsigned char FLASH_PORT_WIDTH;
+  typedef volatile unsigned char FLASH_PORT_WIDTHV;
+  #define	FLASH_ID_MASK	0xFF
+
+  #define FPW	FLASH_PORT_WIDTH
+  #define FPWV	FLASH_PORT_WIDTHV
+
+  #define FLASH_CYCLE1	0x0555
+  #define FLASH_CYCLE2	0x02aa
+  #define FLASH_ID1		0
+  #define FLASH_ID2		1
+  #define FLASH_ID3		0x0E
+  #define FLASH_ID4		0x0F
 #endif
 
 /*-----------------------------------------------------------------------
@@ -183,6 +203,15 @@ void flash_print_info (flash_info_t *info)
 	case FLASH_AM160B:
 		fmt = "29LV160%s (16 Mbit, %s)\n";
 		break;
+	case FLASH_AMLV640U:
+		fmt = "29LV640M (64 Mbit)\n";
+		break;
+	case FLASH_AMDLV065D:
+		fmt = "29LV065D (64 Mbit)\n";
+		break;
+	case FLASH_AMLV256U:
+		fmt = "29LV256M (256 Mbit)\n";
+		break;
 	default:
 		fmt = "Unknown Chip Type\n";
 		break;
@@ -239,7 +268,6 @@ void flash_print_info (flash_info_t *info)
 ulong flash_get_size (FPWV *addr, flash_info_t *info)
 {
 	int		i;
-	ulong	offset;
 
 	/* Write auto select command: read Manufacturer ID */
 	/* Write auto select command sequence and test FLASH answer */
@@ -278,27 +306,64 @@ ulong flash_get_size (FPWV *addr, flash_info_t *info)
 		info->flash_id += FLASH_AM160B;
 		info->sector_count = 35;
 		info->size = 0x00200000;
-#ifdef CFG_LOWBOOT
-		offset = 0;
-#else
-		offset = 0x00e00000;
-#endif
-		info->start[0] = (ulong)addr + offset;
-		info->start[1] = (ulong)addr + offset + 0x4000;
-		info->start[2] = (ulong)addr + offset + 0x6000;
-		info->start[3] = (ulong)addr + offset + 0x8000;
+		info->start[0] = (ulong)addr;
+		info->start[1] = (ulong)addr + 0x4000;
+		info->start[2] = (ulong)addr + 0x6000;
+		info->start[3] = (ulong)addr + 0x8000;
 		for (i = 4; i < info->sector_count; i++)
 		{
-			info->start[i] = (ulong)addr + offset + 0x10000 * (i-3);
+			info->start[i] = (ulong)addr + 0x10000 * (i-3);
+		}
+		break;
+
+	case (FPW)AMD_ID_LV065D:
+		info->flash_id += FLASH_AMDLV065D;
+		info->sector_count = 128;
+		info->size = 0x00800000;
+		for (i = 0; i < info->sector_count; i++)
+		{
+			info->start[i] = (ulong)addr + 0x10000 * i;
 		}
 		break;
 
+	case (FPW)AMD_ID_MIRROR:
+		/* MIRROR BIT FLASH, read more ID bytes */
+		if ((FPW)addr[FLASH_ID3] == (FPW)AMD_ID_LV640U_2 &&
+			(FPW)addr[FLASH_ID4] == (FPW)AMD_ID_LV640U_3)
+		{
+			info->flash_id += FLASH_AMLV640U;
+			info->sector_count = 128;
+			info->size = 0x00800000;
+			for (i = 0; i < info->sector_count; i++)
+			{
+				info->start[i] = (ulong)addr + 0x10000 * i;
+			}
+			break;
+		}
+		if ((FPW)addr[FLASH_ID3] == (FPW)AMD_ID_LV256U_2 &&
+			(FPW)addr[FLASH_ID4] == (FPW)AMD_ID_LV256U_3)
+		{
+			/* attention: only the first 16 MB will be used in u-boot */
+			info->flash_id += FLASH_AMLV256U;
+			info->sector_count = 256;
+			info->size = 0x01000000;
+			for (i = 0; i < info->sector_count; i++)
+			{
+				info->start[i] = (ulong)addr + 0x10000 * i;
+			}
+			break;
+		}
+		
+		/* fall thru to here ! */
 	default:
-		printf ("unknown AMD device=%x ", (FPW)addr[FLASH_ID2]);
+		printf ("unknown AMD device=%x %x %x",
+			(FPW)addr[FLASH_ID2],
+			(FPW)addr[FLASH_ID3],
+			(FPW)addr[FLASH_ID4]);
 		info->flash_id = FLASH_UNKNOWN;
 		info->sector_count = 0;
-		info->size = 0;
-		return (0);			/* => no or unknown flash */
+		info->size = 0x800000;
+		break;
 	}
 
 	/* Put FLASH back in read mode */
@@ -329,6 +394,7 @@ int	flash_erase (flash_info_t *info, int s_first, int s_last)
 
 	switch (info->flash_id & FLASH_TYPEMASK) {
 	case FLASH_AM160B:
+	case FLASH_AMLV640U:
 		break;
 	case FLASH_UNKNOWN:
 	default:
-- 
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