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authorJohn Rigby <jcrigby@gmail.com>2010-01-26 19:24:17 -0700
committerScott Wood <scottwood@freescale.com>2010-01-27 14:22:41 -0600
commitf3bb63a304c4e76010a2a4e99da61f7b6ffffc77 (patch)
treefba1d9dba27647d73a756ca0cbf88bb4f8edaa8f /include
parentef22b50370f7b6d8deba9e9e64d2cb13c542b647 (diff)
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Add MX25 support to nand_spl fsl nfc driver
MX25 has a different version of the fsl_nfc flash controller known as version 1.1. Add support to the nand_spl fsl_nfc driver Versioning differs from mainline mxc kernel driver no consensus yet on if the naming here and in Redboot or the kernel is "correct". Signed-off-by: John Rigby <jcrigby@gmail.com> Signed-off-by: Wolfgang Denk <wd@denx.de> CC: Scott Wood <scottwood@freescale.com>
Diffstat (limited to 'include')
-rw-r--r--include/fsl_nfc.h86
1 files changed, 74 insertions, 12 deletions
diff --git a/include/fsl_nfc.h b/include/fsl_nfc.h
index da5be37..279aaa5 100644
--- a/include/fsl_nfc.h
+++ b/include/fsl_nfc.h
@@ -1,5 +1,4 @@
/*
- *
* (c) 2009 Magnus Lilja <lilja.magnus@gmail.com>
*
* See file CREDITS for list of people who contributed to this
@@ -25,21 +24,57 @@
#define __FSL_NFC_H
/*
+ * TODO: Use same register defs for nand_spl mxc nand driver
+ * and mtd mxc nand driver.
+ *
* Register map and bit definitions for the Freescale NAND Flash
- * Controller present in i.MX31 and other devices.
+ * Controller present in various i.MX devices.
+ *
+ * MX31 and MX27 have version 1 which has
+ * 4 512 byte main buffers and
+ * 4 16 byte spare buffers
+ * to support up to 2K byte pagesize nand.
+ * Reading or writing a 2K page requires 4 FDI/FDO cycles.
+ *
+ * MX25 has version 1.1 which has
+ * 8 512 byte main buffers and
+ * 8 64 byte spare buffers
+ * to support up to 4K byte pagesize nand.
+ * Reading or writing a 2K or 4K page requires only 1 FDI/FDO cycle.
+ * Also some of registers are moved and/or changed meaning as seen below.
*/
+#if defined(CONFIG_MX31) || defined(CONFIG_MX27)
+#define MXC_NFC_V1
+#elif defined(CONFIG_MX25)
+#define MXC_NFC_V1_1
+#else
+#warning "MXC NFC version not defined"
+#endif
+
+#if defined(MXC_NFC_V1)
+#define NAND_MXC_NR_BUFS 4
+#define NAND_MXC_SPARE_BUF_SIZE 16
+#define NAND_MXC_REG_OFFSET 0xe00
+#define NAND_MXC_2K_MULTI_CYCLE 1
+#elif defined(MXC_NFC_V1_1)
+#define NAND_MXC_NR_BUFS 8
+#define NAND_MXC_SPARE_BUF_SIZE 64
+#define NAND_MXC_REG_OFFSET 0x1e00
+#else
+#error "define CONFIG_NAND_MXC_VXXX to use the mxc spl_nand driver"
+#endif
struct fsl_nfc_regs {
- u32 main_area0[128]; /* @0x000 */
- u32 main_area1[128];
- u32 main_area2[128];
- u32 main_area3[128];
- u32 spare_area0[4];
- u32 spare_area1[4];
- u32 spare_area2[4];
- u32 spare_area3[4];
- u32 reserved1[64 - 16 + 64 * 5];
- u16 bufsiz; /* @ 0xe00 */
+ u32 main_area[NAND_MXC_NR_BUFS][512/4];
+ u32 spare_area[NAND_MXC_NR_BUFS][NAND_MXC_SPARE_BUF_SIZE/4];
+ /*
+ * reserved size is offset of nfc registers
+ * minus total main and spare sizes
+ */
+ u8 reserved1[NAND_MXC_REG_OFFSET
+ - NAND_MXC_NR_BUFS * (512 + NAND_MXC_SPARE_BUF_SIZE)];
+#if defined(MXC_NFC_V1)
+ u16 bufsiz;
u16 reserved2;
u16 buffer_address;
u16 flash_add;
@@ -54,6 +89,30 @@ struct fsl_nfc_regs {
u16 nand_flash_wr_pr_st;
u16 nand_flash_config1;
u16 nand_flash_config2;
+#elif defined(MXC_NFC_V1_1)
+ u16 reserved2[2];
+ u16 buffer_address;
+ u16 flash_add;
+ u16 flash_cmd;
+ u16 configuration;
+ u16 ecc_status_result;
+ u16 ecc_status_result2;
+ u16 spare_area_size;
+ u16 nf_wr_prot;
+ u16 reserved3[2];
+ u16 nand_flash_wr_pr_st;
+ u16 nand_flash_config1;
+ u16 nand_flash_config2;
+ u16 reserved4;
+ u16 unlock_start_blk_add0;
+ u16 unlock_end_blk_add0;
+ u16 unlock_start_blk_add1;
+ u16 unlock_end_blk_add1;
+ u16 unlock_start_blk_add2;
+ u16 unlock_end_blk_add2;
+ u16 unlock_start_blk_add3;
+ u16 unlock_end_blk_add3;
+#endif
};
/*
@@ -98,6 +157,9 @@ struct fsl_nfc_regs {
*/
#define NFC_INT 0x8000
+#ifdef MXC_NFC_V1_1
+#define NFC_4_8N_ECC (1 << 0)
+#endif
#define NFC_SP_EN (1 << 2)
#define NFC_ECC_EN (1 << 3)
#define NFC_INT_MSK (1 << 4)