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DA830 EVM: Enable NAND support on Spectrum Digital EVM

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The EVM UI extender card has a NAND device. This change will enable
saveenv to work with NAND and Linux to be booted using:

	mtdparts default
	nboot kernel
	bootm

Signed-off-by: Nick Thompson <nick.thompson@ge.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
This commit is contained in:
Nick Thompson 2010-02-08 11:36:16 -05:00 committed by Tom Rix
parent 6228e6389e
commit 3a4e43921d
2 changed files with 53 additions and 5 deletions
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37
board/davinci/da830evm/da830evm.c
View file

@ -35,6 +35,7 @@
#include <common.h>
#include <i2c.h>
#include <asm/arch/hardware.h>
#include <asm/arch/emif_defs.h>
#include <asm/io.h>
#include "../common/misc.h"
@ -51,6 +52,23 @@ static const struct pinmux_config spi0_pins[] = {
{ pinmux[7], 1, 7 }
};
/* EMIF-A bus pins for 8-bit NAND support on CS3 */
static const struct pinmux_config emifa_nand_pins[] = {
{ pinmux[13], 1, 6 },
{ pinmux[13], 1, 7 },
{ pinmux[14], 1, 0 },
{ pinmux[14], 1, 1 },
{ pinmux[14], 1, 2 },
{ pinmux[14], 1, 3 },
{ pinmux[14], 1, 4 },
{ pinmux[14], 1, 5 },
{ pinmux[15], 1, 7 },
{ pinmux[16], 1, 0 },
{ pinmux[18], 1, 1 },
{ pinmux[18], 1, 4 },
{ pinmux[18], 1, 5 },
};
/* UART pin muxer settings */
static const struct pinmux_config uart_pins[] = {
{ pinmux[8], 2, 7 },
@ -77,6 +95,9 @@ static const struct pinmux_resource pinmuxes[] = {
#ifdef CONFIG_USB_DA8XX
PINMUX_ITEM(usb_pins),
#endif
#ifdef CONFIG_USE_NAND
PINMUX_ITEM(emifa_nand_pins),
#endif
};
int board_init(void)
@ -96,6 +117,22 @@ int board_init(void)
writel(0xffffffff, &davinci_aintc_regs->ecr3);
#endif
#ifdef CONFIG_NAND_DAVINCI
/* EMIFA 100MHz clock select */
writel(readl(&davinci_syscfg_regs->cfgchip3) & ~2,
&davinci_syscfg_regs->cfgchip3);
/* NAND CS setup */
writel((DAVINCI_ABCR_WSETUP(0) |
DAVINCI_ABCR_WSTROBE(2) |
DAVINCI_ABCR_WHOLD(0) |
DAVINCI_ABCR_RSETUP(0) |
DAVINCI_ABCR_RSTROBE(2) |
DAVINCI_ABCR_RHOLD(0) |
DAVINCI_ABCR_TA(2) |
DAVINCI_ABCR_ASIZE_8BIT),
&davinci_emif_regs->AB2CR);
#endif
/* arch number of the board */
gd->bd->bi_arch_number = MACH_TYPE_DAVINCI_DA830_EVM;

21
include/configs/da830evm.h
View file

@ -103,14 +103,15 @@
#define CONFIG_NAND_DAVINCI
#define CONFIG_SYS_NO_FLASH
#define CONFIG_ENV_IS_IN_NAND /* U-Boot env in NAND Flash */
#define CONFIG_ENV_OFFSET 0x0 /* Block 0--not used by bootcode */
#define CONFIG_ENV_SIZE (128 << 10)
#define CONFIG_ENV_OFFSET (512 << 10)
#define CONFIG_ENV_SIZE (512 << 10)
#define CONFIG_SYS_NAND_4BIT_HW_ECC_OOBFIRST
#define CONFIG_SYS_NAND_CS 3
#define CONFIG_SYS_NAND_BASE DAVINCI_ASYNC_EMIF_DATA_CE3_BASE
#define CONFIG_SYS_NAND_PAGE_2K
#define CONFIG_SYS_64BIT_VSPRINTF /* needed for nand_util.c */
#define CONFIG_SYS_CLE_MASK 0x10
#define CONFIG_SYS_ALE_MASK 0x8
#define CONFIG_SYS_NAND_HW_ECC
#define CONFIG_SYS_MAX_NAND_DEVICE 1 /* Max number of NAND devices */
#define NAND_MAX_CHIPS 1
#define DEF_BOOTM ""
@ -216,8 +217,7 @@
#define CONFIG_CMD_NAND
#define CONFIG_CMD_MTDPARTS
#define CONFIG_MTD_PARTITIONS
#define CONFIG_CMD_UBI
#define CONFIG_RBTREE
#define CONFIG_MTD_DEVICE
#endif
#ifdef CONFIG_USE_SPIFLASH
@ -268,4 +268,15 @@
#endif /* CONFIG_MUSB_UDC */
#endif /* CONFIG_USB_DA8XX */
#ifdef CONFIG_MTD_PARTITIONS
#define MTDIDS_DEFAULT "nand0=davinci_nand.1"
#define PART_BOOT "512k(bootloader)ro,"
#define PART_PARAMS "512k(params)ro,"
#define PART_KERNEL "4m(kernel),"
#define PART_REST "-(filesystem)"
#define MTDPARTS_DEFAULT \
"mtdparts=davinci_nand.1:" PART_BOOT PART_PARAMS PART_KERNEL PART_REST
#endif
#endif /* __CONFIG_H */