Dear Thomas Chou,
In message 1294211855-18584-1-git-send-email-thomas@wytron.com.tw you wrote:
Flash might be in unknown state when u-boot is started with jtag. And got wrong env data. So reset it in board early init.
Signed-off-by: Thomas Chou thomas@wytron.com.tw
board/altera/nios2-generic/nios2-generic.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/board/altera/nios2-generic/nios2-generic.c b/board/altera/nios2-generic/nios2-generic.c index 89848cf..b76e479 100644 --- a/board/altera/nios2-generic/nios2-generic.c +++ b/board/altera/nios2-generic/nios2-generic.c @@ -24,12 +24,18 @@
#include <common.h> #include <netdev.h> +#include <mtd/cfi_flash.h> +#include <asm/io.h>
void text_base_hook(void); /* nop hook for text_base.S */
int board_early_init_f(void) { text_base_hook(); +#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_SYS_FLASH_BASE)
- writeb(AMD_CMD_RESET, CONFIG_SYS_FLASH_BASE);
- writeb(FLASH_CMD_RESET, CONFIG_SYS_FLASH_BASE);
+#endif
Instead of making fixed assumptions about flash type and it's properties here you should use generic routines from the CFI driver to do the reset.
Best regards,
Wolfgang Denk