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| author | Stefan Roese <sr@denx.de> | 2006-10-20 14:28:52 +0200 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2006-10-20 15:17:55 +0200 |
| commit | 43a2b0e76a56995f17e1b7628c192ebafe6051ee (patch) | |
| tree | 38eca89a07197a458f46aecc4bfc2901b54e8fc6 /cpu/ppc4xx | |
| parent | 73652699dd224dffb5cd8cca24d767bed02d7a28 (diff) | |
| download | barebox-43a2b0e76a56995f17e1b7628c192ebafe6051ee.tar.gz barebox-43a2b0e76a56995f17e1b7628c192ebafe6051ee.tar.xz | |
Add board/cpu specific NAND chip select function to 440 NDFC
Based on idea and implementation from Jeff Mann
Patch by Stefan Roese, 20 Oct 2006
Diffstat (limited to 'cpu/ppc4xx')
| -rw-r--r-- | cpu/ppc4xx/ndfc.c | 39 |
1 files changed, 26 insertions, 13 deletions
diff --git a/cpu/ppc4xx/ndfc.c b/cpu/ppc4xx/ndfc.c index 183ab5ef16..2c44111da6 100644 --- a/cpu/ppc4xx/ndfc.c +++ b/cpu/ppc4xx/ndfc.c @@ -66,7 +66,7 @@ static void ndfc_hwcontrol(struct mtd_info *mtdinfo, int cmd) static void ndfc_write_byte(struct mtd_info *mtdinfo, u_char byte) { struct nand_chip *this = mtdinfo->priv; - ulong base = (ulong) this->IO_ADDR_W; + ulong base = (ulong) this->IO_ADDR_W & 0xfffffffc; if (hwctl & 0x1) out8(base + NDFC_CMD, byte); @@ -79,7 +79,7 @@ static void ndfc_write_byte(struct mtd_info *mtdinfo, u_char byte) static u_char ndfc_read_byte(struct mtd_info *mtdinfo) { struct nand_chip *this = mtdinfo->priv; - ulong base = (ulong) this->IO_ADDR_W; + ulong base = (ulong) this->IO_ADDR_W & 0xfffffffc; return (in8(base + NDFC_DATA)); } @@ -87,7 +87,7 @@ static u_char ndfc_read_byte(struct mtd_info *mtdinfo) static int ndfc_dev_ready(struct mtd_info *mtdinfo) { struct nand_chip *this = mtdinfo->priv; - ulong base = (ulong) this->IO_ADDR_W; + ulong base = (ulong) this->IO_ADDR_W & 0xfffffffc; while (!(in32(base + NDFC_STAT) & NDFC_STAT_IS_READY)) ; @@ -111,30 +111,30 @@ static int ndfc_dev_ready(struct mtd_info *mtdinfo) static void ndfc_read_buf(struct mtd_info *mtdinfo, uint8_t *buf, int len) { struct nand_chip *this = mtdinfo->priv; - ulong base = (ulong) this->IO_ADDR_W; + ulong base = (ulong) this->IO_ADDR_W & 0xfffffffc; uint32_t *p = (uint32_t *) buf; - for(;len > 0; len -= 4) + for (;len > 0; len -= 4) *p++ = in32(base + NDFC_DATA); } static void ndfc_write_buf(struct mtd_info *mtdinfo, const uint8_t *buf, int len) { struct nand_chip *this = mtdinfo->priv; - ulong base = (ulong) this->IO_ADDR_W; + ulong base = (ulong) this->IO_ADDR_W & 0xfffffffc; uint32_t *p = (uint32_t *) buf; - for(; len > 0; len -= 4) + for (; len > 0; len -= 4) out32(base + NDFC_DATA, *p++); } static int ndfc_verify_buf(struct mtd_info *mtdinfo, const uint8_t *buf, int len) { struct nand_chip *this = mtdinfo->priv; - ulong base = (ulong) this->IO_ADDR_W; + ulong base = (ulong) this->IO_ADDR_W & 0xfffffffc; uint32_t *p = (uint32_t *) buf; - for(; len > 0; len -= 4) + for (; len > 0; len -= 4) if (*p++ != in32(base + NDFC_DATA)) return -1; @@ -142,8 +142,20 @@ static int ndfc_verify_buf(struct mtd_info *mtdinfo, const uint8_t *buf, int len } #endif /* #ifndef CONFIG_NAND_SPL */ +void board_nand_select_device(struct nand_chip *nand, int chip) +{ + ulong base = (ulong)nand->IO_ADDR_W & 0xfffffffc; + + /* Set NandFlash Core Configuration Register */ + /* 1col x 2 rows */ + out32(base + NDFC_CCR, 0x00000000 | (chip << 24)); +} + void board_nand_init(struct nand_chip *nand) { + int chip = (ulong)nand->IO_ADDR_W & 0x00000003; + ulong base = (ulong)nand->IO_ADDR_W & 0xfffffffc; + nand->eccmode = NAND_ECC_SOFT; nand->hwcontrol = ndfc_hwcontrol; @@ -166,10 +178,11 @@ void board_nand_init(struct nand_chip *nand) mtebc(pb0ap, CFG_EBC_PB0AP); #endif - /* Set NandFlash Core Configuration Register */ - /* Chip select 3, 1col x 2 rows */ - out32(CFG_NAND_BASE + NDFC_CCR, 0x00000000 | (CFG_NAND_CS << 24)); - out32(CFG_NAND_BASE + NDFC_BCFG0 + (CFG_NAND_CS << 2), 0x80002222); + /* + * Select required NAND chip in NDFC + */ + board_nand_select_device(nand, chip); + out32(base + NDFC_BCFG0 + (chip << 2), 0x80002222); } #endif |