arm/mach-nomadik/cpu-8815.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  * Copyright STMicroelectronics, 2007.
0004  */
0005
0006 #include <linux/types.h>
0007 #include <linux/init.h>
0008 #include <linux/device.h>
0009 #include <linux/amba/bus.h>
0010 #include <linux/platform_device.h>
0011 #include <linux/io.h>
0012 #include <linux/slab.h>
0013 #include <linux/irq.h>
0014 #include <linux/dma-mapping.h>
0015 #include <linux/of_irq.h>
0016 #include <linux/of_address.h>
0017 #include <linux/of_platform.h>
0018
0019 #include <asm/mach/arch.h>
0020 #include <asm/mach/map.h>
0021 #include <asm/mach/time.h>
0022 #include <asm/mach-types.h>
0023
0024 #include <asm/cacheflush.h>
0025 #include <asm/hardware/cache-l2x0.h>
0026
0027 /*
0028  * These are the only hard-coded address offsets we still have to use.
0029  */
0030 #define NOMADIK_FSMC_BASE   0x10100000  /* FSMC registers */
0031 #define NOMADIK_SDRAMC_BASE 0x10110000  /* SDRAM Controller */
0032 #define NOMADIK_CLCDC_BASE  0x10120000  /* CLCD Controller */
0033 #define NOMADIK_MDIF_BASE   0x10120000  /* MDIF */
0034 #define NOMADIK_DMA0_BASE   0x10130000  /* DMA0 Controller */
0035 #define NOMADIK_IC_BASE     0x10140000  /* Vectored Irq Controller */
0036 #define NOMADIK_DMA1_BASE   0x10150000  /* DMA1 Controller */
0037 #define NOMADIK_USB_BASE    0x10170000  /* USB-OTG conf reg base */
0038 #define NOMADIK_CRYP_BASE   0x10180000  /* Crypto processor */
0039 #define NOMADIK_SHA1_BASE   0x10190000  /* SHA-1 Processor */
0040 #define NOMADIK_XTI_BASE    0x101A0000  /* XTI */
0041 #define NOMADIK_RNG_BASE    0x101B0000  /* Random number generator */
0042 #define NOMADIK_SRC_BASE    0x101E0000  /* SRC base */
0043 #define NOMADIK_WDOG_BASE   0x101E1000  /* Watchdog */
0044 #define NOMADIK_MTU0_BASE   0x101E2000  /* Multiple Timer 0 */
0045 #define NOMADIK_MTU1_BASE   0x101E3000  /* Multiple Timer 1 */
0046 #define NOMADIK_GPIO0_BASE  0x101E4000  /* GPIO0 */
0047 #define NOMADIK_GPIO1_BASE  0x101E5000  /* GPIO1 */
0048 #define NOMADIK_GPIO2_BASE  0x101E6000  /* GPIO2 */
0049 #define NOMADIK_GPIO3_BASE  0x101E7000  /* GPIO3 */
0050 #define NOMADIK_RTC_BASE    0x101E8000  /* Real Time Clock base */
0051 #define NOMADIK_PMU_BASE    0x101E9000  /* Power Management Unit */
0052 #define NOMADIK_OWM_BASE    0x101EA000  /* One wire master */
0053 #define NOMADIK_SCR_BASE    0x101EF000  /* Secure Control registers */
0054 #define NOMADIK_MSP2_BASE   0x101F0000  /* MSP 2 interface */
0055 #define NOMADIK_MSP1_BASE   0x101F1000  /* MSP 1 interface */
0056 #define NOMADIK_UART2_BASE  0x101F2000  /* UART 2 interface */
0057 #define NOMADIK_SSIRx_BASE  0x101F3000  /* SSI 8-ch rx interface */
0058 #define NOMADIK_SSITx_BASE  0x101F4000  /* SSI 8-ch tx interface */
0059 #define NOMADIK_MSHC_BASE   0x101F5000  /* Memory Stick(Pro) Host */
0060 #define NOMADIK_SDI_BASE    0x101F6000  /* SD-card/MM-Card */
0061 #define NOMADIK_I2C1_BASE   0x101F7000  /* I2C1 interface */
0062 #define NOMADIK_I2C0_BASE   0x101F8000  /* I2C0 interface */
0063 #define NOMADIK_MSP0_BASE   0x101F9000  /* MSP 0 interface */
0064 #define NOMADIK_FIRDA_BASE  0x101FA000  /* FIrDA interface */
0065 #define NOMADIK_UART1_BASE  0x101FB000  /* UART 1 interface */
0066 #define NOMADIK_SSP_BASE    0x101FC000  /* SSP interface */
0067 #define NOMADIK_UART0_BASE  0x101FD000  /* UART 0 interface */
0068 #define NOMADIK_SGA_BASE    0x101FE000  /* SGA interface */
0069 #define NOMADIK_L2CC_BASE   0x10210000  /* L2 Cache controller */
0070 #define NOMADIK_UART1_VBASE 0xF01FB000
0071
0072 /* This is needed for LL-debug/earlyprintk/debug-macro.S */
0073 static struct map_desc cpu8815_io_desc[] __initdata = {
0074     {
0075         .virtual =  NOMADIK_UART1_VBASE,
0076         .pfn =      __phys_to_pfn(NOMADIK_UART1_BASE),
0077         .length =   SZ_4K,
0078         .type =     MT_DEVICE,
0079     },
0080 };
0081
0082 static void __init cpu8815_map_io(void)
0083 {
0084     iotable_init(cpu8815_io_desc, ARRAY_SIZE(cpu8815_io_desc));
0085 }
0086
0087 static void cpu8815_restart(enum reboot_mode mode, const char *cmd)
0088 {
0089     void __iomem *srcbase = ioremap(NOMADIK_SRC_BASE, SZ_4K);
0090
0091     /* FIXME: use egpio when implemented */
0092
0093     /* Write anything to Reset status register */
0094     writel(1, srcbase + 0x18);
0095 }
0096
0097 static const char * cpu8815_board_compat[] = {
0098     "st,nomadik-nhk-15",
0099     "calaosystems,usb-s8815",
0100     NULL,
0101 };
0102
0103 DT_MACHINE_START(NOMADIK_DT, "Nomadik STn8815")
0104     .l2c_aux_val    = 0,
0105     .l2c_aux_mask   = ~0,
0106     .map_io     = cpu8815_map_io,
0107     .restart    = cpu8815_restart,
0108     .dt_compat      = cpu8815_board_compat,
0109 MACHINE_END