arch/arm/mach-sa1100/pleb.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * linux/arch/arm/mach-sa1100/pleb.c
   4  */
   5
   6 #include <linux/init.h>
   7 #include <linux/kernel.h>
   8 #include <linux/tty.h>
   9 #include <linux/ioport.h>
  10 #include <linux/platform_data/sa11x0-serial.h>
  11 #include <linux/platform_device.h>
  12 #include <linux/irq.h>
  13 #include <linux/io.h>
  14 #include <linux/mtd/partitions.h>
  15 #include <linux/smc91x.h>
  16
  17 #include <mach/hardware.h>
  18 #include <asm/setup.h>
  19 #include <asm/mach-types.h>
  20
  21 #include <asm/mach/arch.h>
  22 #include <asm/mach/map.h>
  23 #include <asm/mach/flash.h>
  24 #include <mach/irqs.h>
  25
  26 #include "generic.h"
  27
  28
  29 /*
  30  * Ethernet IRQ mappings
  31  */
  32
  33 #define PLEB_ETH0_P             (0x20000300)    /* Ethernet 0 in PCMCIA0 IO */
  34 #define PLEB_ETH0_V             (0xf6000300)
  35
  36 #define GPIO_ETH0_IRQ           GPIO_GPIO(21)
  37 #define GPIO_ETH0_EN            GPIO_GPIO(26)
  38
  39 #define IRQ_GPIO_ETH0_IRQ       IRQ_GPIO21
  40
  41 static struct resource smc91x_resources[] = {
  42         [0] = DEFINE_RES_MEM(PLEB_ETH0_P, 0x04000000),
  43 #if 0 /* Autoprobe instead, to get rising/falling edge characteristic right */
  44         [1] = DEFINE_RES_IRQ(IRQ_GPIO_ETH0_IRQ),
  45 #endif
  46 };
  47
  48 static struct smc91x_platdata smc91x_platdata = {
  49         .flags = SMC91X_USE_16BIT | SMC91X_USE_8BIT | SMC91X_NOWAIT,
  50 };
  51
  52 static struct platform_device smc91x_device = {
  53         .name           = "smc91x",
  54         .id             = 0,
  55         .num_resources  = ARRAY_SIZE(smc91x_resources),
  56         .resource       = smc91x_resources,
  57         .dev = {
  58                 .platform_data  = &smc91x_platdata,
  59         },
  60 };
  61
  62 static struct platform_device *devices[] __initdata = {
  63         &smc91x_device,
  64 };
  65
  66
  67 /*
  68  * Pleb's memory map
  69  * has flash memory (typically 4 or 8 meg) selected by
  70  * the two SA1100 lowest chip select outputs.
  71  */
  72 static struct resource pleb_flash_resources[] = {
  73         [0] = DEFINE_RES_MEM(SA1100_CS0_PHYS, SZ_8M),
  74         [1] = DEFINE_RES_MEM(SA1100_CS1_PHYS, SZ_8M),
  75 };
  76
  77
  78 static struct mtd_partition pleb_partitions[] = {
  79         {
  80                 .name           = "blob",
  81                 .offset         = 0,
  82                 .size           = 0x00020000,
  83         }, {
  84                 .name           = "kernel",
  85                 .offset         = MTDPART_OFS_APPEND,
  86                 .size           = 0x000e0000,
  87         }, {
  88                 .name           = "rootfs",
  89                 .offset         = MTDPART_OFS_APPEND,
  90                 .size           = 0x00300000,
  91         }
  92 };
  93
  94
  95 static struct flash_platform_data pleb_flash_data = {
  96         .map_name = "cfi_probe",
  97         .parts = pleb_partitions,
  98         .nr_parts = ARRAY_SIZE(pleb_partitions),
  99 };
 100
 101
 102 static void __init pleb_init(void)
 103 {
 104         sa11x0_register_mtd(&pleb_flash_data, pleb_flash_resources,
 105                               ARRAY_SIZE(pleb_flash_resources));
 106
 107
 108         platform_add_devices(devices, ARRAY_SIZE(devices));
 109 }
 110
 111
 112 static void __init pleb_map_io(void)
 113 {
 114         sa1100_map_io();
 115
 116         sa1100_register_uart(0, 3);
 117         sa1100_register_uart(1, 1);
 118
 119         GAFR |= (GPIO_UART_TXD | GPIO_UART_RXD);
 120         GPDR |= GPIO_UART_TXD;
 121         GPDR &= ~GPIO_UART_RXD;
 122         PPAR |= PPAR_UPR;
 123
 124         /*
 125          * Fix expansion memory timing for network card
 126          */
 127         MECR = ((2<<10) | (2<<5) | (2<<0));
 128
 129         /*
 130          * Enable the SMC ethernet controller
 131          */
 132         GPDR |= GPIO_ETH0_EN;   /* set to output */
 133         GPCR  = GPIO_ETH0_EN;   /* clear MCLK (enable smc) */
 134
 135         GPDR &= ~GPIO_ETH0_IRQ;
 136
 137         irq_set_irq_type(GPIO_ETH0_IRQ, IRQ_TYPE_EDGE_FALLING);
 138 }
 139
 140 MACHINE_START(PLEB, "PLEB")
 141         .map_io         = pleb_map_io,
 142         .nr_irqs        = SA1100_NR_IRQS,
 143         .init_irq       = sa1100_init_irq,
 144         .init_time      = sa1100_timer_init,
 145         .init_machine   = pleb_init,
 146         .init_late      = sa11x0_init_late,
 147         .restart        = sa11x0_restart,
 148 MACHINE_END