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authorNick Thompson <nick.thompson@gefanuc.com>2009-12-12 12:12:26 -0500
committerTom Rix <Tom.Rix@windriver.com>2010-01-04 08:48:17 -0600
commit97f4eb8cfb97c7c5b158e3c0df4611efbf50f403 (patch)
tree61fc8af5589184dd825d70659b7e5c8491e369d3
parent90110e0eab5ac6ab714109ce1fd8873c858dd552 (diff)
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Davinci: Configurable NAND chip selects
Davinci: Configurable NAND chip selects Add a CONFIG_SYS_NAND_CS setting to all davinci configs and use it to setup the NAND controller in the davinci_nand mtd driver. Signed-off-by: Nick Thompson <nick.thompson@gefanuc.com>
Diffstat
-rw-r--r--drivers/mtd/nand/davinci_nand.c25
-rw-r--r--include/asm-arm/arch-davinci/emif_defs.h14
-rw-r--r--include/configs/davinci_dm355evm.h1
-rw-r--r--include/configs/davinci_dm355leopard.h1
-rw-r--r--include/configs/davinci_dm365evm.h1
-rw-r--r--include/configs/davinci_dm6467evm.h1
-rw-r--r--include/configs/davinci_dvevm.h1
-rw-r--r--include/configs/davinci_schmoogie.h1
-rw-r--r--include/configs/davinci_sffsdr.h1
-rw-r--r--include/configs/davinci_sonata.h1
10 files changed, 29 insertions, 18 deletions
diff --git a/drivers/mtd/nand/davinci_nand.c b/drivers/mtd/nand/davinci_nand.c
index 41a9568..1ad802a 100644
--- a/drivers/mtd/nand/davinci_nand.c
+++ b/drivers/mtd/nand/davinci_nand.c
@@ -82,26 +82,20 @@ static void nand_davinci_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int c
static void nand_davinci_enable_hwecc(struct mtd_info *mtd, int mode)
{
- int dummy;
+ u_int32_t val;
- dummy = emif_regs->NANDF1ECC;
+ (void)readl(&(emif_regs->NANDFECC[CONFIG_SYS_NAND_CS - 2]));
- /* FIXME: only chipselect 0 is supported for now */
- emif_regs->NANDFCR |= 1 << 8;
+ val = readl(&emif_regs->NANDFCR);
+ val |= DAVINCI_NANDFCR_1BIT_ECC_START(CONFIG_SYS_NAND_CS);
+ writel(val, &emif_regs->NANDFCR);
}
static u_int32_t nand_davinci_readecc(struct mtd_info *mtd, u_int32_t region)
{
u_int32_t ecc = 0;
- if (region == 1)
- ecc = emif_regs->NANDF1ECC;
- else if (region == 2)
- ecc = emif_regs->NANDF2ECC;
- else if (region == 3)
- ecc = emif_regs->NANDF3ECC;
- else if (region == 4)
- ecc = emif_regs->NANDF4ECC;
+ ecc = readl(&(emif_regs->NANDFECC[region - 1]));
return(ecc);
}
@@ -223,8 +217,11 @@ static void nand_davinci_4bit_enable_hwecc(struct mtd_info *mtd, int mode)
* Start a new ECC calculation for reading or writing 512 bytes
* of data.
*/
- val = (emif_regs->NANDFCR & ~(3 << 4)) | (1 << 12);
- emif_regs->NANDFCR = val;
+ val = readl(&emif_regs->NANDFCR);
+ val &= ~DAVINCI_NANDFCR_4BIT_ECC_SEL_MASK;
+ val |= DAVINCI_NANDFCR_4BIT_ECC_SEL(CONFIG_SYS_NAND_CS);
+ val |= DAVINCI_NANDFCR_4BIT_ECC_START;
+ writel(val, &emif_regs->NANDFCR);
break;
case NAND_ECC_READSYN:
val = emif_regs->NAND4BITECC1;
diff --git a/include/asm-arm/arch-davinci/emif_defs.h b/include/asm-arm/arch-davinci/emif_defs.h
index c91e30c..d67292f 100644
--- a/include/asm-arm/arch-davinci/emif_defs.h
+++ b/include/asm-arm/arch-davinci/emif_defs.h
@@ -51,10 +51,7 @@ typedef struct {
dv_reg NANDFCR;
dv_reg NANDFSR;
u_int8_t RSVD1[8];
- dv_reg NANDF1ECC;
- dv_reg NANDF2ECC;
- dv_reg NANDF3ECC;
- dv_reg NANDF4ECC;
+ dv_reg NANDFECC[4];
u_int8_t RSVD2[60];
dv_reg NAND4BITECCLOAD;
dv_reg NAND4BITECC1;
@@ -68,4 +65,13 @@ typedef struct {
} emif_registers;
typedef emif_registers *emifregs;
+
+#define DAVINCI_NANDFCR_4BIT_ECC_SEL_MASK (3 << 4)
+#define DAVINCI_NANDFCR_4BIT_ECC_SEL(n) ((n-2) << 4)
+
+#define DAVINCI_NANDFCR_1BIT_ECC_START(n) (1 << (8 + (n-2)))
+
+#define DAVINCI_NANDFCR_4BIT_ECC_START (1 << 12)
+#define DAVINCI_NANDFCR_4BIT_CALC_START (1 << 13)
+
#endif
diff --git a/include/configs/davinci_dm355evm.h b/include/configs/davinci_dm355evm.h
index d092fb8..37011c0 100644
--- a/include/configs/davinci_dm355evm.h
+++ b/include/configs/davinci_dm355evm.h
@@ -66,6 +66,7 @@
/* NAND: socketed, two chipselects, normally 2 GBytes */
#define CONFIG_NAND_DAVINCI
+#define CONFIG_SYS_NAND_CS 2
#define CONFIG_SYS_NAND_USE_FLASH_BBT
#define CONFIG_SYS_NAND_4BIT_HW_ECC_OOBFIRST
#define CONFIG_SYS_NAND_PAGE_2K
diff --git a/include/configs/davinci_dm355leopard.h b/include/configs/davinci_dm355leopard.h
index ca3dea4..e09fb75 100644
--- a/include/configs/davinci_dm355leopard.h
+++ b/include/configs/davinci_dm355leopard.h
@@ -65,6 +65,7 @@
/* NAND */
#define CONFIG_NAND_DAVINCI
+#define CONFIG_SYS_NAND_CS 2
#define CONFIG_SYS_NAND_USE_FLASH_BBT
#define CONFIG_SYS_NAND_HW_ECC
diff --git a/include/configs/davinci_dm365evm.h b/include/configs/davinci_dm365evm.h
index 4916077..c6e1d10 100644
--- a/include/configs/davinci_dm365evm.h
+++ b/include/configs/davinci_dm365evm.h
@@ -74,6 +74,7 @@
/* NAND: socketed, two chipselects, normally 2 GBytes */
#define CONFIG_NAND_DAVINCI
+#define CONFIG_SYS_NAND_CS 2
#define CONFIG_SYS_NAND_USE_FLASH_BBT
#define CONFIG_SYS_NAND_4BIT_HW_ECC_OOBFIRST
#define CONFIG_SYS_NAND_PAGE_2K
diff --git a/include/configs/davinci_dm6467evm.h b/include/configs/davinci_dm6467evm.h
index ce2d7c4..ddc5990 100644
--- a/include/configs/davinci_dm6467evm.h
+++ b/include/configs/davinci_dm6467evm.h
@@ -75,6 +75,7 @@
#define CONFIG_SYS_NO_FLASH
#ifdef CONFIG_SYS_USE_NAND
#define CONFIG_NAND_DAVINCI
+#define CONFIG_SYS_NAND_CS 2
#undef CONFIG_ENV_IS_IN_FLASH
#define CONFIG_ENV_IS_IN_NAND
#define CONFIG_ENV_SIZE (16 << 10) /* 16 KiB */
diff --git a/include/configs/davinci_dvevm.h b/include/configs/davinci_dvevm.h
index f7d2399..5774df5 100644
--- a/include/configs/davinci_dvevm.h
+++ b/include/configs/davinci_dvevm.h
@@ -114,6 +114,7 @@
/*=====================*/
#ifdef CONFIG_SYS_USE_NAND
#define CONFIG_NAND_DAVINCI
+#define CONFIG_SYS_NAND_CS 2
#undef CONFIG_ENV_IS_IN_FLASH
#define CONFIG_SYS_NO_FLASH
#define CONFIG_ENV_IS_IN_NAND /* U-Boot env in NAND Flash */
diff --git a/include/configs/davinci_schmoogie.h b/include/configs/davinci_schmoogie.h
index 47db2aa..3972ebc 100644
--- a/include/configs/davinci_schmoogie.h
+++ b/include/configs/davinci_schmoogie.h
@@ -83,6 +83,7 @@
#undef CONFIG_ENV_IS_IN_FLASH
#define CONFIG_SYS_NO_FLASH
#define CONFIG_NAND_DAVINCI
+#define CONFIG_SYS_NAND_CS 2
#define CONFIG_ENV_IS_IN_NAND /* U-Boot env in NAND Flash */
#define CONFIG_ENV_SECT_SIZE 2048 /* Env sector Size */
#define CONFIG_ENV_SIZE (128 << 10) /* 128 KiB */
diff --git a/include/configs/davinci_sffsdr.h b/include/configs/davinci_sffsdr.h
index f24eb7a..94be9dc 100644
--- a/include/configs/davinci_sffsdr.h
+++ b/include/configs/davinci_sffsdr.h
@@ -78,6 +78,7 @@
#undef CONFIG_ENV_IS_IN_FLASH
#define CONFIG_SYS_NO_FLASH
#define CONFIG_NAND_DAVINCI
+#define CONFIG_SYS_NAND_CS 2
#define CONFIG_ENV_IS_IN_NAND /* U-Boot env in NAND Flash */
#define CONFIG_ENV_SECT_SIZE 2048 /* Env sector Size */
#define CONFIG_ENV_SIZE (128 << 10) /* 128 KiB */
diff --git a/include/configs/davinci_sonata.h b/include/configs/davinci_sonata.h
index 5a55c56..490821a 100644
--- a/include/configs/davinci_sonata.h
+++ b/include/configs/davinci_sonata.h
@@ -114,6 +114,7 @@
/*=====================*/
#ifdef CONFIG_SYS_USE_NAND
#define CONFIG_NAND_DAVINCI
+#define CONFIG_SYS_NAND_CS 2
#undef CONFIG_ENV_IS_IN_FLASH
#define CONFIG_SYS_NO_FLASH
#define CONFIG_ENV_IS_IN_NAND /* U-Boot env in NAND Flash */
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