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 <command.h>
   9 #include <init.h>
  10 #include <asm/io.h>
  11 #include <asm/arch/hardware.h>
  12 #include <asm/arch/spr_misc.h>
  13
  14 int arch_cpu_init(void)
  15 {
  16         struct misc_regs *const misc_p =
  17             (struct misc_regs *)CONFIG_SPEAR_MISCBASE;
  18         u32 periph1_clken, periph_clk_cfg;
  19
  20         periph1_clken = readl(&misc_p->periph1_clken);
  21
  22 #if defined(CONFIG_SPEAR3XX)
  23         periph1_clken |= MISC_GPT2ENB;
  24 #elif defined(CONFIG_SPEAR600)
  25         periph1_clken |= MISC_GPT3ENB;
  26 #endif
  27
  28 #if defined(CONFIG_PL011_SERIAL)
  29         periph1_clken |= MISC_UART0ENB;
  30
  31         periph_clk_cfg = readl(&misc_p->periph_clk_cfg);
  32         periph_clk_cfg &= ~CONFIG_SPEAR_UARTCLKMSK;
  33         periph_clk_cfg |= CONFIG_SPEAR_UART48M;
  34         writel(periph_clk_cfg, &misc_p->periph_clk_cfg);
  35 #endif
  36 #if defined(CONFIG_ETH_DESIGNWARE)
  37         periph1_clken |= MISC_ETHENB;
  38 #endif
  39 #if defined(CONFIG_DW_UDC)
  40         periph1_clken |= MISC_USBDENB;
  41 #endif
  42 #if defined(CONFIG_SYS_I2C_DW)
  43         periph1_clken |= MISC_I2CENB;
  44 #endif
  45 #if defined(CONFIG_ST_SMI)
  46         periph1_clken |= MISC_SMIENB;
  47 #endif
  48 #if defined(CONFIG_NAND_FSMC)
  49         periph1_clken |= MISC_FSMCENB;
  50 #endif
  51 #if defined(CONFIG_USB_EHCI_SPEAR)
  52         periph1_clken |= PERIPH_USBH1 | PERIPH_USBH2;
  53 #endif
  54 #if defined(CONFIG_SPEAR_GPIO)
  55         periph1_clken |= MISC_GPIO3ENB | MISC_GPIO4ENB;
  56 #endif
  57 #if defined(CONFIG_PL022_SPI)
  58         periph1_clken |= MISC_SSP1ENB | MISC_SSP2ENB | MISC_SSP3ENB;
  59 #endif
  60
  61         writel(periph1_clken, &misc_p->periph1_clken);
  62
  63         return 0;
  64 }
  65
  66 #ifdef CONFIG_DISPLAY_CPUINFO
  67 int print_cpuinfo(void)
  68 {
  69 #ifdef CONFIG_SPEAR300
  70         printf("CPU:   SPEAr300\n");
  71 #elif defined(CONFIG_SPEAR310)
  72         printf("CPU:   SPEAr310\n");
  73 #elif defined(CONFIG_SPEAR320)
  74         printf("CPU:   SPEAr320\n");
  75 #elif defined(CONFIG_SPEAR600)
  76         printf("CPU:   SPEAr600\n");
  77 #else
  78 #error CPU not supported in spear platform
  79 #endif
  80         return 0;
  81 }
  82 #endif
  83
  84 #if !defined(CONFIG_SPL_BUILD) && defined(CONFIG_NAND_ECC_BCH) && defined(CONFIG_NAND_FSMC)
  85 static int do_switch_ecc(struct cmd_tbl *cmdtp, int flag, int argc,
  86                          char *const argv[])
  87 {
  88         if (argc != 2)
  89                 goto usage;
  90
  91         if (strncmp(argv[1], "hw", 2) == 0) {
  92                 /* 1-bit HW ECC */
  93                 printf("Switching to 1-bit HW ECC\n");
  94                 fsmc_nand_switch_ecc(1);
  95         } else if (strncmp(argv[1], "bch4", 2) == 0) {
  96                 /* 4-bit SW ECC BCH4 */
  97                 printf("Switching to 4-bit SW ECC (BCH4)\n");
  98                 fsmc_nand_switch_ecc(4);
  99         } else {
 100                 goto usage;
 101         }
 102
 103         return 0;
 104
 105 usage:
 106         printf("Usage: nandecc %s\n", cmdtp->usage);
 107         return 1;
 108 }
 109
 110 U_BOOT_CMD(
 111         nandecc, 2, 0,  do_switch_ecc,
 112         "switch NAND ECC calculation algorithm",
 113         "hw|bch4 - Switch between NAND hardware 1-bit HW and"
 114         " 4-bit SW BCH\n"
 115 );
 116 #endif