From 7ade0c634a979c32fa91a74e8f5775f24651fbe6 Mon Sep 17 00:00:00 2001
From: Stefan Roese <sr@denx.de>
Date: Tue, 24 Oct 2006 18:06:48 +0200
Subject: [PATCH] Fix bug in PPC440 NAND driver cpu/ppc4xx/ndfc.c Patch by
Stefan Roese, 24 Oct 2006
---
CHANGELOG | 3 +++
cpu/ppc4xx/ndfc.c | 13 +++++++++----
2 files changed, 12 insertions(+), 4 deletions(-)
diff --git a/CHANGELOG b/CHANGELOG
index ed6396df8f..b9dd4469a5 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -4,6 +4,9 @@ Changes for U-Boot 1.1.5:
* Fix sequoia separate object direcory building problems.
+* Fix bug in PPC440 NAND driver cpu/ppc4xx/ndfc.c
+ Patch by Stefan Roese, 24 Oct 2006
+
* Cleanup compile warnings. Prepare for release 1.1.5
* Fix compile problem in include/configs/ep82xxm.h
diff --git a/cpu/ppc4xx/ndfc.c b/cpu/ppc4xx/ndfc.c
index 2c44111da6..352173128d 100644
--- a/cpu/ppc4xx/ndfc.c
+++ b/cpu/ppc4xx/ndfc.c
@@ -144,16 +144,21 @@ static int ndfc_verify_buf(struct mtd_info *mtdinfo, const uint8_t *buf, int len
void board_nand_select_device(struct nand_chip *nand, int chip)
{
+ /*
+ * Don't use "chip" to address the NAND device,
+ * generate the cs from the address where it is encoded.
+ */
+ int cs = (ulong)nand->IO_ADDR_W & 0x00000003;
ulong base = (ulong)nand->IO_ADDR_W & 0xfffffffc;
/* Set NandFlash Core Configuration Register */
/* 1col x 2 rows */
- out32(base + NDFC_CCR, 0x00000000 | (chip << 24));
+ out32(base + NDFC_CCR, 0x00000000 | (cs << 24));
}
void board_nand_init(struct nand_chip *nand)
{
- int chip = (ulong)nand->IO_ADDR_W & 0x00000003;
+ int cs = (ulong)nand->IO_ADDR_W & 0x00000003;
ulong base = (ulong)nand->IO_ADDR_W & 0xfffffffc;
nand->eccmode = NAND_ECC_SOFT;
@@ -181,8 +186,8 @@ void board_nand_init(struct nand_chip *nand)
/*
* Select required NAND chip in NDFC
*/
- board_nand_select_device(nand, chip);
- out32(base + NDFC_BCFG0 + (chip << 2), 0x80002222);
+ board_nand_select_device(nand, cs);
+ out32(base + NDFC_BCFG0 + (cs << 2), 0x80002222);
}
#endif
--
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