arch/arm/cpu/arm926ejs/spear/cpu.c

   1 /*
   2  * (C) Copyright 2010
   3  * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 #include <common.h>
  25 #include <asm/io.h>
  26 #include <asm/arch/hardware.h>
  27 #include <asm/arch/spr_misc.h>
  28
  29 int arch_cpu_init(void)
  30 {
  31         struct misc_regs *const misc_p =
  32             (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
  33         u32 periph1_clken, periph_clk_cfg;
  34
  35         periph1_clken = readl(&misc_p->periph1_clken);
  36
  37 #if defined(CONFIG_SPEAR3XX)
  38         periph1_clken |= MISC_GPT2ENB;
  39 #elif defined(CONFIG_SPEAR600)
  40         periph1_clken |= MISC_GPT3ENB;
  41 #endif
  42
  43 #if defined(CONFIG_PL011_SERIAL)
  44         periph1_clken |= MISC_UART0ENB;
  45
  46         periph_clk_cfg = readl(&misc_p->periph_clk_cfg);
  47         periph_clk_cfg &= ~CONFIG_SPEAR_UARTCLKMSK;
  48         periph_clk_cfg |= CONFIG_SPEAR_UART48M;
  49         writel(periph_clk_cfg, &misc_p->periph_clk_cfg);
  50 #endif
  51 #if defined(CONFIG_DESIGNWARE_ETH)
  52         periph1_clken |= MISC_ETHENB;
  53 #endif
  54 #if defined(CONFIG_DW_UDC)
  55         periph1_clken |= MISC_USBDENB;
  56 #endif
  57 #if defined(CONFIG_DW_I2C)
  58         periph1_clken |= MISC_I2CENB;
  59 #endif
  60 #if defined(CONFIG_ST_SMI)
  61         periph1_clken |= MISC_SMIENB;
  62 #endif
  63 #if defined(CONFIG_NAND_FSMC)
  64         periph1_clken |= MISC_FSMCENB;
  65 #endif
  66
  67         writel(periph1_clken, &misc_p->periph1_clken);
  68         return 0;
  69 }
  70
  71 #ifdef CONFIG_DISPLAY_CPUINFO
  72 int print_cpuinfo(void)
  73 {
  74 #ifdef CONFIG_SPEAR300
  75         printf("CPU:   SPEAr300\n");
  76 #elif defined(CONFIG_SPEAR310)
  77         printf("CPU:   SPEAr310\n");
  78 #elif defined(CONFIG_SPEAR320)
  79         printf("CPU:   SPEAr320\n");
  80 #elif defined(CONFIG_SPEAR600)
  81         printf("CPU:   SPEAr600\n");
  82 #else
  83 #error CPU not supported in spear platform
  84 #endif
  85         return 0;
  86 }
  87 #endif