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

   1 /*
   2  * (C) Copyright 2010
   3  * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0+
   6  */
   7
   8 #include <common.h>
   9 #include <asm/io.h>
  10 #include <asm/arch/hardware.h>
  11 #include <asm/arch/spr_misc.h>
  12
  13 int arch_cpu_init(void)
  14 {
  15         struct misc_regs *const misc_p =
  16             (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
  17         u32 periph1_clken, periph_clk_cfg;
  18
  19         periph1_clken = readl(&misc_p->periph1_clken);
  20
  21 #if defined(CONFIG_SPEAR3XX)
  22         periph1_clken |= MISC_GPT2ENB;
  23 #elif defined(CONFIG_SPEAR600)
  24         periph1_clken |= MISC_GPT3ENB;
  25 #endif
  26
  27 #if defined(CONFIG_PL011_SERIAL)
  28         periph1_clken |= MISC_UART0ENB;
  29
  30         periph_clk_cfg = readl(&misc_p->periph_clk_cfg);
  31         periph_clk_cfg &= ~CONFIG_SPEAR_UARTCLKMSK;
  32         periph_clk_cfg |= CONFIG_SPEAR_UART48M;
  33         writel(periph_clk_cfg, &misc_p->periph_clk_cfg);
  34 #endif
  35 #if defined(CONFIG_ETH_DESIGNWARE)
  36         periph1_clken |= MISC_ETHENB;
  37 #endif
  38 #if defined(CONFIG_DW_UDC)
  39         periph1_clken |= MISC_USBDENB;
  40 #endif
  41 #if defined(CONFIG_SYS_I2C_DW)
  42         periph1_clken |= MISC_I2CENB;
  43 #endif
  44 #if defined(CONFIG_ST_SMI)
  45         periph1_clken |= MISC_SMIENB;
  46 #endif
  47 #if defined(CONFIG_NAND_FSMC)
  48         periph1_clken |= MISC_FSMCENB;
  49 #endif
  50 #if defined(CONFIG_USB_EHCI_SPEAR)
  51         periph1_clken |= PERIPH_USBH1 | PERIPH_USBH2;
  52 #endif
  53
  54         writel(periph1_clken, &misc_p->periph1_clken);
  55
  56         return 0;
  57 }
  58
  59 void enable_caches(void)
  60 {
  61 #ifndef CONFIG_SYS_ICACHE_OFF
  62         icache_enable();
  63 #endif
  64 #ifndef CONFIG_SYS_DCACHE_OFF
  65         dcache_enable();
  66 #endif
  67 }
  68
  69 #ifdef CONFIG_DISPLAY_CPUINFO
  70 int print_cpuinfo(void)
  71 {
  72 #ifdef CONFIG_SPEAR300
  73         printf("CPU:   SPEAr300\n");
  74 #elif defined(CONFIG_SPEAR310)
  75         printf("CPU:   SPEAr310\n");
  76 #elif defined(CONFIG_SPEAR320)
  77         printf("CPU:   SPEAr320\n");
  78 #elif defined(CONFIG_SPEAR600)
  79         printf("CPU:   SPEAr600\n");
  80 #else
  81 #error CPU not supported in spear platform
  82 #endif
  83         return 0;
  84 }
  85 #endif