AM3358 的 Uboot 识别不了 Nand。该如何正确配置Uboot？
以下是所有的配置：
SDK 版本：ti-sdk-am335x-evm-08.00.00.00
Uboot版本：u-boot-2014.07-g7e537bf
config：am335x_evm_config
mux.c pinmux配置片段：
#ifdef CONFIG_NAND
static struct module_pin_mux nand_pin_mux[] = {
{OFFSET(gpmc_ad0), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD0 */
{OFFSET(gpmc_ad1), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD1 */
{OFFSET(gpmc_ad2), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD2 */
{OFFSET(gpmc_ad3), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD3 */
{OFFSET(gpmc_ad4), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD4 */
{OFFSET(gpmc_ad5), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD5 */
{OFFSET(gpmc_ad6), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD6 */
{OFFSET(gpmc_ad7), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD7 */
#ifdef CONFIG_SYS_NAND_BUSWIDTH_16BIT
{OFFSET(gpmc_ad8), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD8 */
{OFFSET(gpmc_ad9), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD9 */
{OFFSET(gpmc_ad10), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD10 */
{OFFSET(gpmc_ad11), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD11 */
{OFFSET(gpmc_ad12), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD12 */
{OFFSET(gpmc_ad13), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD13 */
{OFFSET(gpmc_ad14), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD14 */
{OFFSET(gpmc_ad15), (MODE(0) | PULLUDDIS | RXACTIVE)}, /* AD15 */
#endif
{OFFSET(gpmc_wait0), (MODE(0) | PULLUP_EN | RXACTIVE)}, /* nWAIT */
{OFFSET(gpmc_wpn), (MODE(7) | PULLUP_EN)}, /* nWP */
{OFFSET(gpmc_csn0), (MODE(0) | PULLUP_EN)}, /* nCS */
{OFFSET(gpmc_wen), (MODE(0) | PULLDOWN_EN)}, /* WEN */
{OFFSET(gpmc_oen_ren), (MODE(0) | PULLDOWN_EN)}, /* OE */
{OFFSET(gpmc_advn_ale), (MODE(0) | PULLDOWN_EN)}, /* ADV_ALE */
{OFFSET(gpmc_be0n_cle), (MODE(0) | PULLDOWN_EN)}, /* BE_CLE */
{-1},
};
*
*
*
if (board_is_evm_sk(header)) {
/* Starter Kit EVM */
enable_uart0_pin_mux();
enable_uart1_pin_mux();
configure_module_pin_mux(i2c1_pin_mux);
configure_module_pin_mux(gpio0_7_pin_mux);
configure_module_pin_mux(rgmii1_pin_mux);
configure_module_pin_mux(mmc0_pin_mux_sk_evm);
configure_module_pin_mux(nand_pin_mux);
}
下面是Uboot打印：
U-Boot SPL 2014.07-00107-gd28f2b9-dirty (Mar 20 2015 - 10:23:48) reading args spl_load_image_fat_os: error reading image args, err - -1 reading u-boot.img reading u-boot.img U-Boot 2014.07-00107-gd28f2b9-dirty (Jul 16 2015 - 11:01:15) I2C: ready DRAM: 256 MiB NAND: 0 MiB MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1 reading uboot.env ** Unable to read "uboot.env" from mmc0:1 ** Using default environment Net: <ethaddr> not set. Validating first E-fuse MAC cpsw, usb_ether Hit any key to stop autoboot: 0 U-Boot#
以下是 自动生成的 config.h ，看上去Nand 已经被定义了。
/* Automatically generated - do not edit */
#define CONFIG_SERIAL1 1
#define CONFIG_CONS_INDEX 1
#define CONFIG_NAND 1
#define CONFIG_SYS_ARCH "arm"
#define CONFIG_SYS_CPU "armv7"
#define CONFIG_SYS_BOARD "am335x"
#define CONFIG_SYS_VENDOR "ti"
#define CONFIG_SYS_SOC "am33xx"
#define CONFIG_BOARDDIR board/ti/am335x
#include <config_cmd_defaults.h>
#include <config_defaults.h>
#include <configs/am335x_evm.h>
#include <asm/config.h>
#include <config_fallbacks.h>
#include <config_uncmd_spl.h>
