[U-Boot] [PATCH v1] ARM: socfpga: stratix10: Probe FPGA status before bridge enable

From: Marek Vasut <marex@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v1] ARM: socfpga: stratix10: Probe FPGA status before bridge enable
Date: Fri, 3 May 2019 17:10:07 +0200	[thread overview]
Message-ID: <694515e3-5dd1-8167-faa6-b5943aa0b852@denx.de> (raw)
In-Reply-To: <1556871507-17614-1-git-send-email-chee.hong.ang@intel.com>

On 5/3/19 10:18 AM, chee.hong.ang at intel.com wrote:
> From: "Ang, Chee Hong" <chee.hong.ang@intel.com>
> 
> Send CONFIG_STATUS and RECONFIG_STATUS mailbox commands to Secure
> Device Manager (SDM) to get the status of FPGA and make sure the
> FPGA is in user mode before enable the bridge.
> 
> Signed-off-by: Ang, Chee Hong <chee.hong.ang@intel.com>
> ---
>  arch/arm/mach-socfpga/misc_s10.c | 12 ++++++++++++
>  1 file changed, 12 insertions(+)
> 
> diff --git a/arch/arm/mach-socfpga/misc_s10.c b/arch/arm/mach-socfpga/misc_s10.c
> index 113eace..0e4133f 100644
> --- a/arch/arm/mach-socfpga/misc_s10.c
> +++ b/arch/arm/mach-socfpga/misc_s10.c
> @@ -16,6 +16,7 @@
>  #include <asm/arch/misc.h>
>  #include <asm/pl310.h>
>  #include <linux/libfdt.h>
> +#include <asm/arch/mailbox_s10.h>
>  
>  #include <dt-bindings/reset/altr,rst-mgr-s10.h>
>  
> @@ -152,5 +153,16 @@ int arch_early_init_r(void)
>  
>  void do_bridge_reset(int enable)
>  {
> +	/* Check FPGA status before bridge enable */
> +	if (enable) {
> +		int ret = mbox_get_fpga_config_status(MBOX_RECONFIG_STATUS);
> +
> +		if (ret && ret != MBOX_CFGSTAT_STATE_CONFIG)
> +			ret = mbox_get_fpga_config_status(MBOX_CONFIG_STATUS);
> +
> +		if (ret)
> +			return;
> +	}
> +
>  	socfpga_bridges_reset(enable);
>  }
> 
Applied, thanks

-- 
Best regards,
Marek Vasut