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 */
  73 static 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
  82 static void __init cpu8815_map_io(void)
  83 {
  84         iotable_init(cpu8815_io_desc, ARRAY_SIZE(cpu8815_io_desc));
  85 }
  86
  87 static 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
  97 static const char * cpu8815_board_compat[] = {
  98         "st,nomadik-nhk-15",
  99         "calaosystems,usb-s8815",
 100         NULL,
 101 };
 102
 103 DT_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,
 109 MACHINE_END