arch/ppc/boot/simple/misc-katana.c

   1 /*
   2  * arch/ppc/boot/simple/misc-katana.c
   3  *
   4  * Set up MPSC values to bootwrapper can prompt user.
   5  *
   6  * Author: Mark A. Greer <source@mvista.com>
   7  *
   8  * 2004 (c) MontaVista Software, Inc. This file is licensed under
   9  * the terms of the GNU General Public License version 2. This program
  10  * is licensed "as is" without any warranty of any kind, whether express
  11  * or implied.
  12  */
  13
  14 #include <linux/config.h>
  15 #include <linux/types.h>
  16 #include <asm/io.h>
  17 #include <asm/mv64x60_defs.h>
  18 #include <platforms/katana.h>
  19
  20 extern u32 mv64x60_console_baud;
  21 extern u32 mv64x60_mpsc_clk_src;
  22 extern u32 mv64x60_mpsc_clk_freq;
  23
  24 /* Not in the kernel so won't include kernel.h to get its 'min' definition */
  25 #ifndef min
  26 #define min(a,b)        (((a) < (b)) ? (a) : (b))
  27 #endif
  28
  29 void
  30 mv64x60_board_init(void __iomem *old_base, void __iomem *new_base)
  31 {
  32         mv64x60_console_baud = KATANA_DEFAULT_BAUD;
  33         mv64x60_mpsc_clk_src = KATANA_MPSC_CLK_SRC;
  34         mv64x60_mpsc_clk_freq =
  35                 min(katana_bus_freq((void __iomem *)KATANA_CPLD_BASE),
  36                         MV64x60_TCLK_FREQ_MAX);
  37 }