Changeset 286 for trunk/softs/tsar_boot/io_drivers

Timestamp:

Jan 14, 2013, 4:39:14 PM (11 years ago)

Author:

cfuguet

Message:

Fixing bug in boot_tty.c:

Use address of tty status when reading with the ioread32 function.

Makefile and ioc.c:
Introducing SYSCLK_FREQ environment variable to choose a clock frequency when
using FPGA platform. 50000000 Hz by default.

File:

• trunk/softs/tsar_boot/io_drivers/ioc.c (modified) (5 diffs)

trunk/softs/tsar_boot/io_drivers/ioc.c

@@ -55 +55 @@
 //    // iterate on lines to invalidate each one of them
 //    for ( i=0; i<size; i+=dcache_line_size )
-//        asm volatile(" cache %0, %1"
-//                :
-//                :"i" (0x11), "R" (*((char*)buffer+i)));
+//        asm volatile
+//            (" mtc2 %0,     $7\n"
+//             :
+//             : "r" (*((char*)buffer+i))
+//             );
 //}
 
@@ -105 +107 @@
     boot_puts(init_begin);
 
+#ifndef SYSCLK_FREQ
+#warning "Using default value for SYSCLK_FREQ = 50000000"
+#define SYSCLK_FREQ 50000000U
+#endif
+
     /**
      * Initializing the SPI controller
@@ -111 +118 @@
       _spi_device   ,
       200000        , /**< SPI_clk: 200 Khz */
-      50000000      , /**< Sys_clk: 50  Mhz */
+      SYSCLK_FREQ   , /**< Sys_clk          */
       8             , /**< Charlen: 8       */
       SPI_TX_NEGEDGE,
@@ -132 +139 @@
         _spi_device ,
         10000000    , /**< SPI_clkL 10 Mhz */
-        50000000    , /**< Sys_clk: 50 Mhz */
+        SYSCLK_FREQ , /**< Sys_clk         */
         -1          , /**< Charlen: 8      */
         -1          ,
@@ -327 +334 @@
 
     //_ioc_lock = 0;
-    //
-    //_dcache_buf_invalidate(buffer, count);
 
     return 0;