Merge branch 'master' of git://git.denx.de/u-boot-nand-flash

6 files changed, 45 insertions, 225 deletions

diff --git a/arch/arm/cpu/armv7/am33xx/Makefile b/arch/arm/cpu/armv7/am33xx/Makefile
index 966fcab..5566310 100644
--- a/arch/arm/cpu/armv7/am33xx/Makefile
+++ b/arch/arm/cpu/armv7/am33xx/Makefile
@@ -19,4 +19,3 @@ obj-y	+= ddr.o
 obj-y	+= emif4.o
 obj-y	+= board.o
 obj-y	+= mux.o
-obj-$(CONFIG_NAND_OMAP_GPMC)	+= elm.o
diff --git a/arch/arm/cpu/armv7/am33xx/elm.c b/arch/arm/cpu/armv7/am33xx/elm.c
deleted file mode 100644
index 8f1d6af..0000000
--- a/arch/arm/cpu/armv7/am33xx/elm.c
+++ /dev/null
@@ -1,196 +0,0 @@
-/*
- * (C) Copyright 2010-2011 Texas Instruments, <www.ti.com>
- * Mansoor Ahamed <mansoor.ahamed@ti.com>
- *
- * BCH Error Location Module (ELM) support.
- *
- * NOTE:
- * 1. Supports only continuous mode. Dont see need for page mode in uboot
- * 2. Supports only syndrome polynomial 0. i.e. poly local variable is
- *    always set to ELM_DEFAULT_POLY. Dont see need for other polynomial
- *    sets in uboot
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/errno.h>
-#include <asm/arch/cpu.h>
-#include <asm/omap_gpmc.h>
-#include <asm/arch/elm.h>
-
-#define ELM_DEFAULT_POLY (0)
-
-struct elm *elm_cfg;
-
-/**
- * elm_load_syndromes - Load BCH syndromes based on nibble selection
- * @syndrome: BCH syndrome
- * @nibbles:
- * @poly: Syndrome Polynomial set to use
- *
- * Load BCH syndromes based on nibble selection
- */
-static void elm_load_syndromes(u8 *syndrome, u32 nibbles, u8 poly)
-{
-	u32 *ptr;
-	u32 val;
-
-	/* reg 0 */
-	ptr = &elm_cfg->syndrome_fragments[poly].syndrome_fragment_x[0];
-	val = syndrome[0] | (syndrome[1] << 8) | (syndrome[2] << 16) |
-				(syndrome[3] << 24);
-	writel(val, ptr);
-	/* reg 1 */
-	ptr = &elm_cfg->syndrome_fragments[poly].syndrome_fragment_x[1];
-	val = syndrome[4] | (syndrome[5] << 8) | (syndrome[6] << 16) |
-				(syndrome[7] << 24);
-	writel(val, ptr);
-
-	/* BCH 8-bit with 26 nibbles (4*8=32) */
-	if (nibbles > 13) {
-		/* reg 2 */
-		ptr = &elm_cfg->syndrome_fragments[poly].syndrome_fragment_x[2];
-		val = syndrome[8] | (syndrome[9] << 8) | (syndrome[10] << 16) |
-				(syndrome[11] << 24);
-		writel(val, ptr);
-		/* reg 3 */
-		ptr = &elm_cfg->syndrome_fragments[poly].syndrome_fragment_x[3];
-		val = syndrome[12] | (syndrome[13] << 8) |
-			(syndrome[14] << 16) | (syndrome[15] << 24);
-		writel(val, ptr);
-	}
-
-	/* BCH 16-bit with 52 nibbles (7*8=56) */
-	if (nibbles > 26) {
-		/* reg 4 */
-		ptr = &elm_cfg->syndrome_fragments[poly].syndrome_fragment_x[4];
-		val = syndrome[16] | (syndrome[17] << 8) |
-			(syndrome[18] << 16) | (syndrome[19] << 24);
-		writel(val, ptr);
-
-		/* reg 5 */
-		ptr = &elm_cfg->syndrome_fragments[poly].syndrome_fragment_x[5];
-		val = syndrome[20] | (syndrome[21] << 8) |
-			(syndrome[22] << 16) | (syndrome[23] << 24);
-		writel(val, ptr);
-
-		/* reg 6 */
-		ptr = &elm_cfg->syndrome_fragments[poly].syndrome_fragment_x[6];
-		val = syndrome[24] | (syndrome[25] << 8) |
-			(syndrome[26] << 16) | (syndrome[27] << 24);
-		writel(val, ptr);
-	}
-}
-
-/**
- * elm_check_errors - Check for BCH errors and return error locations
- * @syndrome: BCH syndrome
- * @nibbles:
- * @error_count: Returns number of errrors in the syndrome
- * @error_locations: Returns error locations (in decimal) in this array
- *
- * Check the provided syndrome for BCH errors and return error count
- * and locations in the array passed. Returns -1 if error is not correctable,
- * else returns 0
- */
-int elm_check_error(u8 *syndrome, u32 nibbles, u32 *error_count,
-		u32 *error_locations)
-{
-	u8 poly = ELM_DEFAULT_POLY;
-	s8 i;
-	u32 location_status;
-
-	elm_load_syndromes(syndrome, nibbles, poly);
-
-	/* start processing */
-	writel((readl(&elm_cfg->syndrome_fragments[poly].syndrome_fragment_x[6])
-				| ELM_SYNDROME_FRAGMENT_6_SYNDROME_VALID),
-		&elm_cfg->syndrome_fragments[poly].syndrome_fragment_x[6]);
-
-	/* wait for processing to complete */
-	while ((readl(&elm_cfg->irqstatus) & (0x1 << poly)) != 0x1)
-		;
-	/* clear status */
-	writel((readl(&elm_cfg->irqstatus) | (0x1 << poly)),
-			&elm_cfg->irqstatus);
-
-	/* check if correctable */
-	location_status = readl(&elm_cfg->error_location[poly].location_status);
-	if (!(location_status & ELM_LOCATION_STATUS_ECC_CORRECTABLE_MASK))
-		return -1;
-
-	/* get error count */
-	*error_count = readl(&elm_cfg->error_location[poly].location_status) &
-					ELM_LOCATION_STATUS_ECC_NB_ERRORS_MASK;
-
-	for (i = 0; i < *error_count; i++) {
-		error_locations[i] =
-			readl(&elm_cfg->error_location[poly].error_location_x[i]);
-	}
-
-	return 0;
-}
-
-
-/**
- * elm_config - Configure ELM module
- * @level: 4 / 8 / 16 bit BCH
- *
- * Configure ELM module based on BCH level.
- * Set mode as continuous mode.
- * Currently we are using only syndrome 0 and syndromes 1 to 6 are not used.
- * Also, the mode is set only for syndrome 0
- */
-int elm_config(enum bch_level level)
-{
-	u32 val;
-	u8 poly = ELM_DEFAULT_POLY;
-	u32 buffer_size = 0x7FF;
-
-	/* config size and level */
-	val = (u32)(level) & ELM_LOCATION_CONFIG_ECC_BCH_LEVEL_MASK;
-	val |= ((buffer_size << ELM_LOCATION_CONFIG_ECC_SIZE_POS) &
-				ELM_LOCATION_CONFIG_ECC_SIZE_MASK);
-	writel(val, &elm_cfg->location_config);
-
-	/* config continous mode */
-	/* enable interrupt generation for syndrome polynomial set */
-	writel((readl(&elm_cfg->irqenable) | (0x1 << poly)),
-			&elm_cfg->irqenable);
-	/* set continuous mode for the syndrome polynomial set */
-	writel((readl(&elm_cfg->page_ctrl) & ~(0x1 << poly)),
-			&elm_cfg->page_ctrl);
-
-	return 0;
-}
-
-/**
- * elm_reset - Do a soft reset of ELM
- *
- * Perform a soft reset of ELM and return after reset is done.
- */
-void elm_reset(void)
-{
-	/* initiate reset */
-	writel((readl(&elm_cfg->sysconfig) | ELM_SYSCONFIG_SOFTRESET),
-				&elm_cfg->sysconfig);
-
-	/* wait for reset complete and normal operation */
-	while ((readl(&elm_cfg->sysstatus) & ELM_SYSSTATUS_RESETDONE) !=
-		ELM_SYSSTATUS_RESETDONE)
-		;
-}
-
-/**
- * elm_init - Initialize ELM module
- *
- * Initialize ELM support. Currently it does only base address init
- * and ELM reset.
- */
-void elm_init(void)
-{
-	elm_cfg = (struct elm *)ELM_BASE;
-	elm_reset();
-}
diff --git a/arch/arm/cpu/armv7/am33xx/mem.c b/arch/arm/cpu/armv7/am33xx/mem.c
index b6eb466..56c9e7d 100644
--- a/arch/arm/cpu/armv7/am33xx/mem.c
+++ b/arch/arm/cpu/armv7/am33xx/mem.c
@@ -22,17 +22,6 @@
 
 struct gpmc *gpmc_cfg;
 
-#if defined(CONFIG_CMD_NAND)
-static const u32 gpmc_m_nand[GPMC_MAX_REG] = {
-	M_NAND_GPMC_CONFIG1,
-	M_NAND_GPMC_CONFIG2,
-	M_NAND_GPMC_CONFIG3,
-	M_NAND_GPMC_CONFIG4,
-	M_NAND_GPMC_CONFIG5,
-	M_NAND_GPMC_CONFIG6, 0
-};
-#endif
-
 
 void enable_gpmc_cs_config(const u32 *gpmc_config, struct gpmc_cs *cs, u32 base,
 			u32 size)
@@ -61,11 +50,34 @@ void gpmc_init(void)
 {
 	/* putting a blanket check on GPMC based on ZeBu for now */
 	gpmc_cfg = (struct gpmc *)GPMC_BASE;
-
-#ifdef CONFIG_CMD_NAND
-	const u32 *gpmc_config = NULL;
-	u32 base = 0;
+#if defined(CONFIG_NOR)
+/* configure GPMC for NOR */
+	const u32 gpmc_regs[GPMC_MAX_REG] = {	STNOR_GPMC_CONFIG1,
+						STNOR_GPMC_CONFIG2,
+						STNOR_GPMC_CONFIG3,
+						STNOR_GPMC_CONFIG4,
+						STNOR_GPMC_CONFIG5,
+						STNOR_GPMC_CONFIG6,
+						STNOR_GPMC_CONFIG7
+						};
+	u32 size = GPMC_SIZE_16M;
+	u32 base = CONFIG_SYS_FLASH_BASE;
+#elif defined(CONFIG_NAND)
+/* configure GPMC for NAND */
+	const u32  gpmc_regs[GPMC_MAX_REG] = {	M_NAND_GPMC_CONFIG1,
+						M_NAND_GPMC_CONFIG2,
+						M_NAND_GPMC_CONFIG3,
+						M_NAND_GPMC_CONFIG4,
+						M_NAND_GPMC_CONFIG5,
+						M_NAND_GPMC_CONFIG6,
+						0
+						};
+	u32 size = GPMC_SIZE_256M;
+	u32 base = CONFIG_SYS_NAND_BASE;
+#else
+	const u32 gpmc_regs[GPMC_MAX_REG] = { 0, 0, 0, 0, 0, 0, 0 };
 	u32 size = 0;
+	u32 base = 0;
 #endif
 	/* global settings */
 	writel(0x00000008, &gpmc_cfg->sysconfig);
@@ -81,12 +93,6 @@ void gpmc_init(void)
 	 */
 	writel(0, &gpmc_cfg->cs[0].config7);
 	sdelay(1000);
-
-#ifdef CONFIG_CMD_NAND
-	gpmc_config = gpmc_m_nand;
-
-	base = PISMO1_NAND_BASE;
-	size = PISMO1_NAND_SIZE;
-	enable_gpmc_cs_config(gpmc_config, &gpmc_cfg->cs[0], base, size);
-#endif
+	/* enable chip-select specific configurations */
+	enable_gpmc_cs_config(gpmc_regs, &gpmc_cfg->cs[0], base, size);
 }
diff --git a/arch/arm/include/asm/arch-am33xx/mem.h b/arch/arm/include/asm/arch-am33xx/mem.h
index 983ea28..e7e8c58 100644
--- a/arch/arm/include/asm/arch-am33xx/mem.h
+++ b/arch/arm/include/asm/arch-am33xx/mem.h
@@ -68,9 +68,4 @@
 #define PISMO2_NAND_CS0		7
 #define PISMO2_NAND_CS1		8
 
-/* make it readable for the gpmc_init */
-#define PISMO1_NOR_BASE	FLASH_BASE
-#define PISMO1_NAND_BASE	CONFIG_SYS_NAND_BASE
-#define PISMO1_NAND_SIZE	GPMC_SIZE_256M
-
 #endif /* endif _MEM_H_ */
diff --git a/arch/arm/include/asm/arch-am33xx/elm.h b/arch/arm/include/asm/omap_elm.h
index 45454ea..45454ea 100644
--- a/arch/arm/include/asm/arch-am33xx/elm.h
+++ b/arch/arm/include/asm/omap_elm.h
diff --git a/arch/arm/include/asm/omap_gpmc.h b/arch/arm/include/asm/omap_gpmc.h
index dd40cb6..d4143ec 100644
--- a/arch/arm/include/asm/omap_gpmc.h
+++ b/arch/arm/include/asm/omap_gpmc.h
@@ -68,4 +68,20 @@
 }
 #endif
 
+enum omap_ecc {
+	/* 1-bit  ECC calculation by Software, Error detection by Software */
+	OMAP_ECC_HAM1_CODE_SW = 1, /* avoid un-initialized int can be 0x0 */
+	/* 1-bit  ECC calculation by GPMC, Error detection by Software */
+	/* ECC layout compatible to legacy ROMCODE. */
+	OMAP_ECC_HAM1_CODE_HW,
+	/* 4-bit  ECC calculation by GPMC, Error detection by Software */
+	OMAP_ECC_BCH4_CODE_HW_DETECTION_SW,
+	/* 4-bit  ECC calculation by GPMC, Error detection by ELM */
+	OMAP_ECC_BCH4_CODE_HW,
+	/* 8-bit  ECC calculation by GPMC, Error detection by Software */
+	OMAP_ECC_BCH8_CODE_HW_DETECTION_SW,
+	/* 8-bit  ECC calculation by GPMC, Error detection by ELM */
+	OMAP_ECC_BCH8_CODE_HW,
+};
+
 #endif /* __ASM_OMAP_GPMC_H */