add signal in advance of reboot to e.g. switch of Serdes / SFP

diff --git a/special/fpga_reboot.vhd b/special/fpga_reboot.vhd
index a1e22ec6bc3a4981304e31de2ac427497fa5b520..ffa7d79eb262ba3eade9f746ba65926fa64bb0ea 100644 (file)
--- a/special/fpga_reboot.vhd
+++ b/special/fpga_reboot.vhd
@@ -9,6 +9,7 @@ entity fpga_reboot is
     RESET     : in std_logic;
     DO_REBOOT : in std_logic;
     REBOOT_ON_RESET : in std_logic := '0';
+    PREPARE_FOR_RELOAD : out std_logic;
     PROGRAMN  : out std_logic := '1'
     );
 end entity;
@@ -29,10 +30,14 @@ PROC_REBOOT : process
       restart_fpga_counter   <= x"000";
     else
       delayed_restart_fpga     <= '0';
+      PREPARE_FOR_RELOAD       <= '0';
       if DO_REBOOT = '1' then
         restart_fpga_counter   <= x"001";
       elsif restart_fpga_counter /= x"000" then
         restart_fpga_counter   <= restart_fpga_counter + 1;
+        if restart_fpga_counter >= x"800" then
+          PREPARE_FOR_RELOAD <= '1';
+        end if;
         if restart_fpga_counter >= x"F00" then
           delayed_restart_fpga <= '1';
         end if;

diff --git a/special/spi_flash_and_fpga_reload_record.vhd b/special/spi_flash_and_fpga_reload_record.vhd
index 6cc586a508353e539c42d3aed9a42e020b9f27c3..d66527e46050c9c4010518cbc10e8ec3c615fec4 100644 (file)
--- a/special/spi_flash_and_fpga_reload_record.vhd
+++ b/special/spi_flash_and_fpga_reload_record.vhd
@@ -18,8 +18,9 @@ entity spi_flash_and_fpga_reload_record is
 
     DO_REBOOT_IN    : in  std_logic;
     REBOOT_ON_RESET : in std_logic := '0';
-    PROGRAMN        : out std_logic;
-    
+    PROGRAMN           : out std_logic;
+    PREPARE_FOR_RELOAD : out std_logic;
+
     SPI_CS_OUT     : out std_logic;
     SPI_SCK_OUT    : out std_logic;
     SPI_SDO_OUT    : out std_logic;
@@ -162,6 +163,7 @@ THE_FPGA_REBOOT : entity work.fpga_reboot
     RESET     => RESET_IN,
     DO_REBOOT => DO_REBOOT_IN,
     REBOOT_ON_RESET => REBOOT_ON_RESET,
+    PREPARE_FOR_RELOAD => PREPARE_FOR_RELOAD,
     PROGRAMN  => PROGRAMN
     );