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