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

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2010
   4  * Vipin Kumar, ST Micoelectronics, vipin.kumar@st.com.
   5  */
   6
   7 #include <common.h>
   8 #include <init.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 #if defined(CONFIG_SPEAR_GPIO)
  54         periph1_clken |= MISC_GPIO3ENB | MISC_GPIO4ENB;
  55 #endif
  56 #if defined(CONFIG_PL022_SPI)
  57         periph1_clken |= MISC_SSP1ENB | MISC_SSP2ENB | MISC_SSP3ENB;
  58 #endif
  59
  60         writel(periph1_clken, &misc_p->periph1_clken);
  61
  62         return 0;
  63 }
  64
  65 #ifdef CONFIG_DISPLAY_CPUINFO
  66 int print_cpuinfo(void)
  67 {
  68 #ifdef CONFIG_SPEAR300
  69         printf("CPU:   SPEAr300\n");
  70 #elif defined(CONFIG_SPEAR310)
  71         printf("CPU:   SPEAr310\n");
  72 #elif defined(CONFIG_SPEAR320)
  73         printf("CPU:   SPEAr320\n");
  74 #elif defined(CONFIG_SPEAR600)
  75         printf("CPU:   SPEAr600\n");
  76 #else
  77 #error CPU not supported in spear platform
  78 #endif
  79         return 0;
  80 }
  81 #endif
  82
  83 #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_NAND_ECC_BCH) && defined(CONFIG_NAND_FSMC)
  84 static int do_switch_ecc(cmd_tbl_t *cmdtp, int flag, int argc,
  85                          char *const argv[])
  86 {
  87         if (argc != 2)
  88                 goto usage;
  89
  90         if (strncmp(argv[1], "hw", 2) == 0) {
  91                 /* 1-bit HW ECC */
  92                 printf("Switching to 1-bit HW ECC\n");
  93                 fsmc_nand_switch_ecc(1);
  94         } else if (strncmp(argv[1], "bch4", 2) == 0) {
  95                 /* 4-bit SW ECC BCH4 */
  96                 printf("Switching to 4-bit SW ECC (BCH4)\n");
  97                 fsmc_nand_switch_ecc(4);
  98         } else {
  99                 goto usage;
 100         }
 101
 102         return 0;
 103
 104 usage:
 105         printf("Usage: nandecc %s\n", cmdtp->usage);
 106         return 1;
 107 }
 108
 109 U_BOOT_CMD(
 110         nandecc, 2, 0,  do_switch_ecc,
 111         "switch NAND ECC calculation algorithm",
 112         "hw|bch4 - Switch between NAND hardware 1-bit HW and"
 113         " 4-bit SW BCH\n"
 114 );
 115 #endif