cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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pleb.c (3173B)

      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
     41static 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
     48static struct smc91x_platdata smc91x_platdata = {
     49	.flags = SMC91X_USE_16BIT | SMC91X_USE_8BIT | SMC91X_NOWAIT,
     50};
     51
     52static 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
     62static 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 */
     72static 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
     78static 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
     95static 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
    102static 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
    112static 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
    140MACHINE_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,
    148MACHINE_END