[U-Boot] [PATCH 1/2] mx6sabresd: Add Falcon mode support

[Otavio Salvador]

On Tue, Oct 11, 2016 at 11:09 AM, Diego Dorta <diego.dorta at nxp.com> wrote:
> Allow i.MX6Q Sabre SD to load the kernel and dtb via SPL in Falcon mode.
>
> Based on the Falcon mode code for MX6 Gateworks Ventana board.
>
> Signed-off-by: Diego Dorta <diego.dorta at nxp.com>
> ---
>  board/freescale/mx6sabresd/mx6sabresd.c | 12 ++++++++++++
>  include/configs/mx6sabresd.h            | 12 ++++++++++++
>  2 files changed, 24 insertions(+)
>
> diff --git a/board/freescale/mx6sabresd/mx6sabresd.c b/board/freescale/mx6sabresd/mx6sabresd.c
> index e58c03c..2b6d7be 100644
> --- a/board/freescale/mx6sabresd/mx6sabresd.c
> +++ b/board/freescale/mx6sabresd/mx6sabresd.c
> @@ -57,6 +57,8 @@ DECLARE_GLOBAL_DATA_PTR;
>
>  #define DISP0_PWR_EN   IMX_GPIO_NR(1, 21)
>
> +#define KEY_VOL_UP     IMX_GPIO_NR(1, 4)
> +
>  int dram_init(void)
>  {
>         gd->ram_size = imx_ddr_size();
> @@ -682,6 +684,16 @@ int checkboard(void)
>  #include <spl.h>
>  #include <libfdt.h>
>
> +#ifdef CONFIG_SPL_OS_BOOT
> +int spl_start_uboot(void)
> +{
> +       gpio_direction_input(KEY_VOL_UP);
> +
> +       /* Only enter in Falcon mode if KEY_VOL_UP is pressed */
> +       return gpio_get_value(KEY_VOL_UP);

I would prefer if it booted on falcon by default and vol-up could make
it load the U-Boot.img as a recovery option.

> +}
> +#endif
> +
>  static void ccgr_init(void)
>  {
>         struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
> diff --git a/include/configs/mx6sabresd.h b/include/configs/mx6sabresd.h
> index 5c2734d..6a7a0d3 100644
> --- a/include/configs/mx6sabresd.h
> +++ b/include/configs/mx6sabresd.h
> @@ -11,6 +11,7 @@
>
>  #ifdef CONFIG_SPL
>  #include "imx6_spl.h"
> +#undef CONFIG_SPL_EXT_SUPPORT
>  #endif
>
>  #define CONFIG_MACH_TYPE       3980
> @@ -22,6 +23,17 @@
>
>  #include "mx6sabre_common.h"
>
> +/* Falcon Mode */
> +#define CONFIG_CMD_SPL
> +#define CONFIG_SPL_OS_BOOT
> +#define CONFIG_SYS_SPL_ARGS_ADDR       0x18000000
> +#define CONFIG_CMD_SPL_WRITE_SIZE      (128 * SZ_1K)
> +
> +/* Falcon Mode - MMC support: args at 1MB kernel at 2MB */
> +#define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR  0x800   /* 1MB */
> +#define CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS (CONFIG_CMD_SPL_WRITE_SIZE / 512)
> +#define CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR        0x1000  /* 2MB */
> +
>  #define CONFIG_SYS_FSL_USDHC_NUM       3
>  #if defined(CONFIG_ENV_IS_IN_MMC)
>  #define CONFIG_SYS_MMC_ENV_DEV         1       /* SDHC3 */
> --
> 2.7.4
>
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-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750