Hi,
On 12/19/09 3:57 PM, Himanshu Chauhan wrote:
> U-Boot hangs with qemu-system-mips with ##unknown flash error.
Do you have any idea what's the root cause of that unknown flash
error? Is this U-Boot CFI driver issue, or Qemu-side problem?
Using CONFIG_SYS_NO_FLASH is a quick, enough workaround for your
trial, but does not fix anything. Could you sort out the issue?
I don't think I can help regarding debugging Qemu (sorry!), but
u-boot/doc/README.qemu_mips and U-Boot/Qemu community will help.
> Disabling flash using CONFIG_SYS_NO_FLASH breaks the build.
> This patch fixes the issue. Don't know if its okay.
>
> Signed-off-by: Himanshu Chauhan<himan...@symmetricore.com>
Heh, let's use git-format-patch when preparing patches.
$ git format-patch HEAD^..
$ git format-patch --no-thread HEAD^^..
$ mkdir foo && git format-patch -o foo/ HEAD~3..
and so on.
> diff --git a/common/cmd_bootm.c b/common/cmd_bootm.c
> index efd6aec..5bd3af0 100644
> --- a/common/cmd_bootm.c
> +++ b/common/cmd_bootm.c
> @@ -76,7 +76,7 @@ extern void bz_internal_error(int);
> static int image_info (unsigned long addr);
> #endif
>
> -#if defined(CONFIG_CMD_IMLS)
> +#if !defined(CONFIG_SYS_NO_FLASH)&& defined(CONFIG_CMD_IMLS)
> #include<flash.h>
> extern flash_info_t flash_info[]; /* info for FLASH chips */
> static int do_imls (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
> @@ -1153,7 +1153,7 @@ U_BOOT_CMD(
> /*******************************************************************/
> /* imls - list all images found in flash */
> /*******************************************************************/
> -#if defined(CONFIG_CMD_IMLS)
> +#if !defined(CONFIG_SYS_NO_FLASH)&& defined(CONFIG_CMD_IMLS)
> int do_imls (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
> {
> flash_info_t *info;
Disabling IMLS command in configs/qemu_mips.h?
> diff --git a/drivers/mtd/cfi_flash.c b/drivers/mtd/cfi_flash.c
> index 24eb33f..06c7271 100644
> --- a/drivers/mtd/cfi_flash.c
> +++ b/drivers/mtd/cfi_flash.c
> @@ -41,6 +41,7 @@
> #include<environment.h>
> #include<mtd/cfi_flash.h>
>
> +#ifndef CONFIG_SYS_NO_FLASH
> /*
> * This file implements a Common Flash Interface (CFI) driver for
> * U-Boot.
> @@ -2020,3 +2021,5 @@ unsigned long flash_init (void)
>
> return (size);
> }
> +
> +#endif
Removing CONFIG_CFI_DRIVER from configs/qemu_mips.h?
> diff --git a/include/configs/qemu-mips.h b/include/configs/qemu-mips.h
> index cbacdf9..49a1a1c 100644
> --- a/include/configs/qemu-mips.h
> +++ b/include/configs/qemu-mips.h
> :q
> @@ -142,6 +142,7 @@
> #define CONFIG_SYS_INIT_SP_OFFSET 0x400000
>
> /* We boot from this flash, selected with dip switch */
> +#define CONFIG_SYS_NO_FLASH
> #define CONFIG_SYS_FLASH_BASE 0xbfc00000
> #define CONFIG_SYS_MAX_FLASH_BANKS 1
> #define CONFIG_SYS_MAX_FLASH_SECT 128
> @@ -149,7 +150,8 @@
> #define CONFIG_FLASH_CFI_DRIVER 1
> #define CONFIG_SYS_FLASH_USE_BUFFER_WRITE 1
>
> -#define CONFIG_ENV_IS_IN_FLASH 1
> +#define CONFIG_ENV_IS_IN_FLASH 0
> +#define CONFIG_ENV_IS_NOWHERE
> #define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE +
> CONFIG_SYS_MONITOR_LEN)
>
> /* Address and size of Primary Environment Sector */
[...]
> diff --git a/include/mtd/cfi_flash.h b/include/mtd/cfi_flash.h
> index 2aa6911..2229ddf 100644
> --- a/include/mtd/cfi_flash.h
> +++ b/include/mtd/cfi_flash.h
> @@ -151,7 +151,8 @@ struct cfi_pri_hdr {
> u8 minor_version;
> } __attribute__((packed));
>
> -void flash_write_cmd(flash_info_t * info, flash_sect_t sect,
> - uint offset, u32 cmd);
> +#ifndef CONFIG_SYS_NO_FLASH
> +void flash_write_cmd(flash_info_t * info, flash_sect_t sect, uint offset,
> u32 cmd);
> +#endif
>
> #endif /* __CFI_FLASH_H__ */
Removing CONFIG_CFI_DRIVER from configs/qemu_mips.h?
Anyway, I'd like to leave this issue as-is for now, and look
forward to the read bug fix.
Shinya
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