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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amcore.c (3305B)

      1/*
      2 * amcore.c -- Support for Sysam AMCORE open board
      3 *
      4 * (C) Copyright 2016, Angelo Dureghello <angelo@sysam.it>
      5 *
      6 * This file is subject to the terms and conditions of the GNU General Public
      7 * License.  See the file COPYING in the main directory of this archive
      8 * for more details.
      9 */
     10
     11#include <linux/device.h>
     12#include <linux/platform_device.h>
     13#include <linux/dm9000.h>
     14#include <linux/irq.h>
     15#include <linux/interrupt.h>
     16#include <linux/mtd/mtd.h>
     17#include <linux/mtd/map.h>
     18#include <linux/mtd/partitions.h>
     19#include <linux/mtd/physmap.h>
     20#include <linux/i2c.h>
     21
     22#include <asm/coldfire.h>
     23#include <asm/mcfsim.h>
     24#include <asm/io.h>
     25
     26#if IS_ENABLED(CONFIG_DM9000)
     27
     28#define DM9000_IRQ	25
     29#define DM9000_ADDR	0x30000000
     30
     31/*
     32 * DEVICES and related device RESOURCES
     33 */
     34static struct resource dm9000_resources[] = {
     35	/* physical address of the address register (CMD [A2] to 0)*/
     36	[0] = {
     37		.start  = DM9000_ADDR,
     38		.end    = DM9000_ADDR,
     39		.flags  = IORESOURCE_MEM,
     40	},
     41	/*
     42	 * physical address of the data register (CMD [A2] to 1),
     43	 * driver wants a range >=4 to assume a 32bit data bus
     44	 */
     45	[1] = {
     46		.start  = DM9000_ADDR + 4,
     47		.end    = DM9000_ADDR + 7,
     48		.flags  = IORESOURCE_MEM,
     49	},
     50	/* IRQ line the device's interrupt pin is connected to */
     51	[2] = {
     52		.start  = DM9000_IRQ,
     53		.end    = DM9000_IRQ,
     54		.flags  = IORESOURCE_IRQ,
     55	},
     56};
     57
     58static struct dm9000_plat_data dm9000_platdata = {
     59	.flags		= DM9000_PLATF_32BITONLY,
     60};
     61
     62static struct platform_device dm9000_device = {
     63	.name           = "dm9000",
     64	.id             = 0,
     65	.num_resources  = ARRAY_SIZE(dm9000_resources),
     66	.resource       = dm9000_resources,
     67	.dev = {
     68		.platform_data = &dm9000_platdata,
     69	}
     70};
     71#endif
     72
     73static void __init dm9000_pre_init(void)
     74{
     75	/* Set the dm9000 interrupt to be auto-vectored */
     76	mcf_autovector(DM9000_IRQ);
     77}
     78
     79/*
     80 * Partitioning of parallel NOR flash (39VF3201B)
     81 */
     82static struct mtd_partition amcore_partitions[] = {
     83	{
     84		.name	= "U-Boot (128K)",
     85		.size	= 0x20000,
     86		.offset	= 0x0
     87	},
     88	{
     89		.name	= "Kernel+ROMfs (2994K)",
     90		.size	= 0x2E0000,
     91		.offset	= MTDPART_OFS_APPEND
     92	},
     93	{
     94		.name	= "Flash Free Space (1024K)",
     95		.size	= MTDPART_SIZ_FULL,
     96		.offset	= MTDPART_OFS_APPEND
     97	}
     98};
     99
    100static struct physmap_flash_data flash_data = {
    101	.parts		= amcore_partitions,
    102	.nr_parts	= ARRAY_SIZE(amcore_partitions),
    103	.width		= 2,
    104};
    105
    106static struct resource flash_resource = {
    107	.start		= 0xffc00000,
    108	.end		= 0xffffffff,
    109	.flags		= IORESOURCE_MEM,
    110};
    111
    112static struct platform_device flash_device = {
    113	.name		= "physmap-flash",
    114	.id		= -1,
    115	.resource	= &flash_resource,
    116	.num_resources	= 1,
    117	.dev		= {
    118		.platform_data	= &flash_data,
    119	},
    120};
    121
    122static struct platform_device rtc_device = {
    123	.name	= "rtc-ds1307",
    124	.id	= -1,
    125};
    126
    127static struct i2c_board_info amcore_i2c_info[] __initdata = {
    128	{
    129		I2C_BOARD_INFO("ds1338", 0x68),
    130	},
    131};
    132
    133static struct platform_device *amcore_devices[] __initdata = {
    134#if IS_ENABLED(CONFIG_DM9000)
    135	&dm9000_device,
    136#endif
    137	&flash_device,
    138	&rtc_device,
    139};
    140
    141static int __init init_amcore(void)
    142{
    143#if IS_ENABLED(CONFIG_DM9000)
    144	dm9000_pre_init();
    145#endif
    146
    147	/* Add i2c RTC Dallas chip supprt */
    148	i2c_register_board_info(0, amcore_i2c_info,
    149				ARRAY_SIZE(amcore_i2c_info));
    150
    151	platform_add_devices(amcore_devices, ARRAY_SIZE(amcore_devices));
    152
    153	return 0;
    154}
    155
    156arch_initcall(init_amcore);