arch/mips/bcm63xx/prom.c

   1 /*
   2  * This file is subject to the terms and conditions of the GNU General Public
   3  * License.  See the file "COPYING" in the main directory of this archive
   4  * for more details.
   5  *
   6  * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
   7  */
   8
   9 #include <linux/init.h>
  10 #include <linux/bootmem.h>
  11 #include <asm/bootinfo.h>
  12 #include <bcm63xx_board.h>
  13 #include <bcm63xx_cpu.h>
  14 #include <bcm63xx_io.h>
  15 #include <bcm63xx_regs.h>
  16 #include <bcm63xx_gpio.h>
  17
  18 void __init prom_init(void)
  19 {
  20         u32 reg, mask;
  21
  22         bcm63xx_cpu_init();
  23
  24         /* stop any running watchdog */
  25         bcm_wdt_writel(WDT_STOP_1, WDT_CTL_REG);
  26         bcm_wdt_writel(WDT_STOP_2, WDT_CTL_REG);
  27
  28         /* disable all hardware blocks clock for now */
  29         if (BCMCPU_IS_6338())
  30                 mask = CKCTL_6338_ALL_SAFE_EN;
  31         else if (BCMCPU_IS_6345())
  32                 mask = CKCTL_6345_ALL_SAFE_EN;
  33         else if (BCMCPU_IS_6348())
  34                 mask = CKCTL_6348_ALL_SAFE_EN;
  35         else
  36                 /* BCMCPU_IS_6358() */
  37                 mask = CKCTL_6358_ALL_SAFE_EN;
  38
  39         reg = bcm_perf_readl(PERF_CKCTL_REG);
  40         reg &= ~mask;
  41         bcm_perf_writel(reg, PERF_CKCTL_REG);
  42
  43         /* assign command line from kernel config */
  44         strcpy(arcs_cmdline, CONFIG_CMDLINE);
  45
  46         /* register gpiochip */
  47         bcm63xx_gpio_init();
  48
  49         /* do low level board init */
  50         board_prom_init();
  51 }
  52
  53 void __init prom_free_prom_memory(void)
  54 {
  55 }