From 7205e4075d8b50e4dd89fe39ed03860b23cbb704 Mon Sep 17 00:00:00 2001
From: wdenk
Date: Wed, 10 Sep 2003 22:30:53 +0000
Subject: * Patches by Denis Peter, 9 Sep 2003:   add FAT support for IDE, SCSI
 and USB

* Patches by Gleb Natapov, 2 Sep 2003:
  - cleanup of POST code for unsupported architectures
  - MPC824x locks way0 of data cache for use as initial RAM;
    this patch unlocks it after relocation to RAM and invalidates
    the locked entries.

* Patch by Gleb Natapov, 30 Aug 2003:
  new I2C driver for mpc107 bridge. Now works from flash.

* Patch by Dave Ellis, 11 Aug 2003:
  - JFFS2: fix typo in common/cmd_jffs2.c
  - JFFS2: fix CFG_JFFS2_SORT_FRAGMENTS option
  - JFFS2: remove node version 0 warning
  - JFFS2: accept JFFS2 PADDING nodes
  - SXNI855T: add AM29LV800 support
  - SXNI855T: move environment from EEPROM to flash
  - SXNI855T: boot from JFFS2 in NOR or NAND flash

* Patch by Bill Hargen, 11 Aug 2003:
  fixes for I2C on MPC8240
  - fix i2c_write routine
  - fix iprobe command
  - eliminates use of global variables, plus dead code, cleanup.
---
 board/sixnet/flash.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

(limited to 'board/sixnet/flash.c')

diff --git a/board/sixnet/flash.c b/board/sixnet/flash.c
index 225513acca5..4ab6c1bdc42 100644
--- a/board/sixnet/flash.c
+++ b/board/sixnet/flash.c
@@ -23,6 +23,10 @@
 
 #include <common.h>
 #include <mpc8xx.h>
+/* environment.h defines the various CFG_ENV_... values in terms
+ * of whichever ones are given in the configuration file.
+ */
+#include <environment.h>
 
 flash_info_t	flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips	*/
 
@@ -104,6 +108,19 @@ unsigned long flash_init (void)
 		      &flash_info[0]);
 #endif
 
+#ifdef CFG_ENV_ADDR
+	flash_protect ( FLAG_PROTECT_SET,
+			CFG_ENV_ADDR,
+			CFG_ENV_ADDR + CFG_ENV_SIZE - 1, &flash_info[0]);
+#endif
+
+#ifdef CFG_ENV_ADDR_REDUND
+	flash_protect ( FLAG_PROTECT_SET,
+			CFG_ENV_ADDR_REDUND,
+			CFG_ENV_ADDR_REDUND + CFG_ENV_SIZE_REDUND - 1,
+			&flash_info[0]);
+#endif
+
 	return (size_b);
 }
 
@@ -154,6 +171,21 @@ static void flash_get_offsets (ulong base, flash_info_t *info)
 		for( i = 0; i < info->sector_count; i++ )
 			info->start[i] = base + (i * sect_size);
 	}
+	else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD
+		 && (info->flash_id & FLASH_TYPEMASK) == FLASH_AM800T) {
+
+		int sect_size;		/* number of bytes/sector */
+
+		sect_size = 0x00010000 * (sizeof(FPW)/2);
+
+		/* set up sector start address table (top boot sector type) */
+		for (i = 0; i < info->sector_count - 3; i++)
+			info->start[i] = base + (i * sect_size);
+		i = info->sector_count - 1;
+		info->start[i--] = base + (info->size - 0x00004000) * (sizeof(FPW)/2);
+		info->start[i--] = base + (info->size - 0x00006000) * (sizeof(FPW)/2);
+		info->start[i--] = base + (info->size - 0x00008000) * (sizeof(FPW)/2);
+	}
 }
 
 /*-----------------------------------------------------------------------
@@ -196,6 +228,9 @@ void flash_print_info (flash_info_t *info)
 	}
 
 	switch (info->flash_id & FLASH_TYPEMASK) {
+	case FLASH_AM800T:
+		fmt = "29LV800B%s (8 Mbit, %s)\n";
+		break;
 	case FLASH_AM640U:
 		fmt = "29LV641D (64 Mbit, uniform sectors)\n";
 		break;
@@ -295,6 +330,12 @@ ulong flash_get_size (FPWV *addr, flash_info_t *info)
 	/* Check 16 bits or 32 bits of ID so work on 32 or 16 bit bus. */
 	if (info->flash_id != FLASH_UNKNOWN) switch (addr[1]) {
 
+	case (FPW)AMD_ID_LV800T:
+		info->flash_id += FLASH_AM800T;
+		info->sector_count = 19;
+		info->size = 0x00100000 * (sizeof(FPW)/2);
+		break;				/* => 1 or 2 MiB	*/
+
 	case (FPW)AMD_ID_LV640U:	/* 29LV640 and 29LV641 have same ID */
 		info->flash_id += FLASH_AM640U;
 		info->sector_count = 128;
@@ -401,6 +442,7 @@ static void flash_sync_real_protect(flash_info_t *info)
 	break;
 
     case FLASH_AM640U:
+    case FLASH_AM800T:
     default:
 	/* no hardware protect that we support */
 	break;
@@ -438,6 +480,7 @@ int	flash_erase (flash_info_t *info, int s_first, int s_last)
 	case FLASH_28F320C3B:
 	case FLASH_28F640C3B:
 	case FLASH_AM640U:
+	case FLASH_AM800T:
 		break;
 	case FLASH_UNKNOWN:
 	default:
@@ -735,6 +778,7 @@ int flash_real_protect (flash_info_t * info, long sector, int prot)
 		break;
 
 	case FLASH_AM640U:
+	case FLASH_AM800T:
 	default:
 		/* no hardware protect that we support */
 		info->protect[sector] = prot;
-- 
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