LXR linux/arch/arm/mach-nomadik/cpu-8815.c

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Copyright STMicroelectronics, 2007.
   4 */
   5
   6#include <linux/types.h>
   7#include <linux/init.h>
   8#include <linux/device.h>
   9#include <linux/amba/bus.h>
  10#include <linux/platform_device.h>
  11#include <linux/io.h>
  12#include <linux/slab.h>
  13#include <linux/irq.h>
  14#include <linux/dma-mapping.h>
  15#include <linux/of_irq.h>
  16#include <linux/of_address.h>
  17#include <linux/of_platform.h>
  18
  19#include <asm/mach/arch.h>
  20#include <asm/mach/map.h>
  21#include <asm/mach/time.h>
  22#include <asm/mach-types.h>
  23
  24#include <asm/cacheflush.h>
  25#include <asm/hardware/cache-l2x0.h>
  26
  27/*
  28 * These are the only hard-coded address offsets we still have to use.
  29 */
  30#define NOMADIK_FSMC_BASE       0x10100000      /* FSMC registers */
  31#define NOMADIK_SDRAMC_BASE     0x10110000      /* SDRAM Controller */
  32#define NOMADIK_CLCDC_BASE      0x10120000      /* CLCD Controller */
  33#define NOMADIK_MDIF_BASE       0x10120000      /* MDIF */
  34#define NOMADIK_DMA0_BASE       0x10130000      /* DMA0 Controller */
  35#define NOMADIK_IC_BASE         0x10140000      /* Vectored Irq Controller */
  36#define NOMADIK_DMA1_BASE       0x10150000      /* DMA1 Controller */
  37#define NOMADIK_USB_BASE        0x10170000      /* USB-OTG conf reg base */
  38#define NOMADIK_CRYP_BASE       0x10180000      /* Crypto processor */
  39#define NOMADIK_SHA1_BASE       0x10190000      /* SHA-1 Processor */
  40#define NOMADIK_XTI_BASE        0x101A0000      /* XTI */
  41#define NOMADIK_RNG_BASE        0x101B0000      /* Random number generator */
  42#define NOMADIK_SRC_BASE        0x101E0000      /* SRC base */
  43#define NOMADIK_WDOG_BASE       0x101E1000      /* Watchdog */
  44#define NOMADIK_MTU0_BASE       0x101E2000      /* Multiple Timer 0 */
  45#define NOMADIK_MTU1_BASE       0x101E3000      /* Multiple Timer 1 */
  46#define NOMADIK_GPIO0_BASE      0x101E4000      /* GPIO0 */
  47#define NOMADIK_GPIO1_BASE      0x101E5000      /* GPIO1 */
  48#define NOMADIK_GPIO2_BASE      0x101E6000      /* GPIO2 */
  49#define NOMADIK_GPIO3_BASE      0x101E7000      /* GPIO3 */
  50#define NOMADIK_RTC_BASE        0x101E8000      /* Real Time Clock base */
  51#define NOMADIK_PMU_BASE        0x101E9000      /* Power Management Unit */
  52#define NOMADIK_OWM_BASE        0x101EA000      /* One wire master */
  53#define NOMADIK_SCR_BASE        0x101EF000      /* Secure Control registers */
  54#define NOMADIK_MSP2_BASE       0x101F0000      /* MSP 2 interface */
  55#define NOMADIK_MSP1_BASE       0x101F1000      /* MSP 1 interface */
  56#define NOMADIK_UART2_BASE      0x101F2000      /* UART 2 interface */
  57#define NOMADIK_SSIRx_BASE      0x101F3000      /* SSI 8-ch rx interface */
  58#define NOMADIK_SSITx_BASE      0x101F4000      /* SSI 8-ch tx interface */
  59#define NOMADIK_MSHC_BASE       0x101F5000      /* Memory Stick(Pro) Host */
  60#define NOMADIK_SDI_BASE        0x101F6000      /* SD-card/MM-Card */
  61#define NOMADIK_I2C1_BASE       0x101F7000      /* I2C1 interface */
  62#define NOMADIK_I2C0_BASE       0x101F8000      /* I2C0 interface */
  63#define NOMADIK_MSP0_BASE       0x101F9000      /* MSP 0 interface */
  64#define NOMADIK_FIRDA_BASE      0x101FA000      /* FIrDA interface */
  65#define NOMADIK_UART1_BASE      0x101FB000      /* UART 1 interface */
  66#define NOMADIK_SSP_BASE        0x101FC000      /* SSP interface */
  67#define NOMADIK_UART0_BASE      0x101FD000      /* UART 0 interface */
  68#define NOMADIK_SGA_BASE        0x101FE000      /* SGA interface */
  69#define NOMADIK_L2CC_BASE       0x10210000      /* L2 Cache controller */
  70#define NOMADIK_UART1_VBASE     0xF01FB000
  71
  72/* This is needed for LL-debug/earlyprintk/debug-macro.S */
  73static struct map_desc cpu8815_io_desc[] __initdata = {
  74        {
  75                .virtual =      NOMADIK_UART1_VBASE,
  76                .pfn =          __phys_to_pfn(NOMADIK_UART1_BASE),
  77                .length =       SZ_4K,
  78                .type =         MT_DEVICE,
  79        },
  80};
  81
  82static void __init cpu8815_map_io(void)
  83{
  84        iotable_init(cpu8815_io_desc, ARRAY_SIZE(cpu8815_io_desc));
  85}
  86
  87static void cpu8815_restart(enum reboot_mode mode, const char *cmd)
  88{
  89        void __iomem *srcbase = ioremap(NOMADIK_SRC_BASE, SZ_4K);
  90
  91        /* FIXME: use egpio when implemented */
  92
  93        /* Write anything to Reset status register */
  94        writel(1, srcbase + 0x18);
  95}
  96
  97static const char * cpu8815_board_compat[] = {
  98        "st,nomadik-nhk-15",
  99        "calaosystems,usb-s8815",
 100        NULL,
 101};
 102
 103DT_MACHINE_START(NOMADIK_DT, "Nomadik STn8815")
 104        .l2c_aux_val    = 0,
 105        .l2c_aux_mask   = ~0,
 106        .map_io         = cpu8815_map_io,
 107        .restart        = cpu8815_restart,
 108        .dt_compat      = cpu8815_board_compat,
 109MACHINE_END
 110