linux_dsm_epyc7002/arch/arm/mach-spear13xx/spear1310.c

/*
 * arch/arm/mach-spear13xx/spear1310.c
 *
 * SPEAr1310 machine source file
 *
 * Copyright (C) 2012 ST Microelectronics
 * Viresh Kumar <viresh.linux@gmail.com>
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2. This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#define pr_fmt(fmt) "SPEAr1310: " fmt

#include <linux/amba/pl022.h>
#include <linux/of_platform.h>
#include <linux/pata_arasan_cf_data.h>
#include <asm/hardware/gic.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <mach/generic.h>
#include <mach/spear.h>

/* Base addresses */
#define SPEAR1310_SSP1_BASE			UL(0x5D400000)
#define SPEAR1310_SATA0_BASE			UL(0xB1000000)
#define SPEAR1310_SATA1_BASE			UL(0xB1800000)
#define SPEAR1310_SATA2_BASE			UL(0xB4000000)

#define SPEAR1310_RAS_GRP1_BASE			UL(0xD8000000)
#define VA_SPEAR1310_RAS_GRP1_BASE		UL(0xFA000000)
#define SPEAR1310_RAS_BASE			UL(0xD8400000)
#define VA_SPEAR1310_RAS_BASE			IOMEM(UL(0xFA400000))

static struct arasan_cf_pdata cf_pdata = {
	.cf_if_clk = CF_IF_CLK_166M,
	.quirk = CF_BROKEN_UDMA,
	.dma_priv = &cf_dma_priv,
};

/* ssp device registration */
static struct pl022_ssp_controller ssp1_plat_data = {
	.enable_dma = 0,
};

/* Add SPEAr1310 auxdata to pass platform data */
static struct of_dev_auxdata spear1310_auxdata_lookup[] __initdata = {
	OF_DEV_AUXDATA("arasan,cf-spear1340", MCIF_CF_BASE, NULL, &cf_pdata),
	OF_DEV_AUXDATA("snps,dma-spear1340", DMAC0_BASE, NULL, &dmac_plat_data),
	OF_DEV_AUXDATA("snps,dma-spear1340", DMAC1_BASE, NULL, &dmac_plat_data),
	OF_DEV_AUXDATA("arm,pl022", SSP_BASE, NULL, &pl022_plat_data),

	OF_DEV_AUXDATA("arm,pl022", SPEAR1310_SSP1_BASE, NULL, &ssp1_plat_data),
	{}
};

static void __init spear1310_dt_init(void)
{
	of_platform_populate(NULL, of_default_bus_match_table,
			spear1310_auxdata_lookup, NULL);
}

static const char * const spear1310_dt_board_compat[] = {
	"st,spear1310",
	"st,spear1310-evb",
	NULL,
};

/*
 * Following will create 16MB static virtual/physical mappings
 * PHYSICAL		VIRTUAL
 * 0xD8000000		0xFA000000
 */
struct map_desc spear1310_io_desc[] __initdata = {
	{
		.virtual	= VA_SPEAR1310_RAS_GRP1_BASE,
		.pfn		= __phys_to_pfn(SPEAR1310_RAS_GRP1_BASE),
		.length		= SZ_16M,
		.type		= MT_DEVICE
	},
};

static void __init spear1310_map_io(void)
{
	iotable_init(spear1310_io_desc, ARRAY_SIZE(spear1310_io_desc));
	spear13xx_map_io();
}

DT_MACHINE_START(SPEAR1310_DT, "ST SPEAr1310 SoC with Flattened Device Tree")
	.smp		=	smp_ops(spear13xx_smp_ops),
	.map_io		=	spear1310_map_io,
	.init_irq	=	spear13xx_dt_init_irq,
	.handle_irq	=	gic_handle_irq,
	.timer		=	&spear13xx_timer,
	.init_machine	=	spear1310_dt_init,
	.restart	=	spear_restart,
	.dt_compat	=	spear1310_dt_board_compat,
MACHINE_END