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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2020 Ahmad Fatoum <a.fatoum@pengutronix.de>
*/
#include <common.h>
#include <init.h>
#include <mach/ddramc.h>
#include <mach/hardware.h>
#include <asm/barebox-arm.h>
#include <mach/at91_ddrsdrc.h>
#include <mach/sama5_bootsource.h>
#include <asm/memory.h>
#include <pbl.h>
#include <io.h>
static unsigned sama5_ramsize(void __iomem *base)
{
return at91_get_ddram_size(base, true);
}
void __noreturn sama5d2_barebox_entry(unsigned int r4, void *boarddata)
{
__sama5d2_stashed_bootrom_r4 = r4;
barebox_arm_entry(SAMA5_DDRCS, sama5_ramsize(SAMA5D2_BASE_MPDDRC),
boarddata);
}
static int sama5_ddr_probe(struct device_d *dev)
{
struct resource *iores;
void __iomem *base;
iores = dev_request_mem_resource(dev, 0);
if (IS_ERR(iores))
return PTR_ERR(iores);
base = IOMEM(iores->start);
arm_add_mem_device("ram0", SAMA5_DDRCS, sama5_ramsize(base));
return 0;
}
static struct of_device_id sama5_ddr_dt_ids[] = {
{ .compatible = "atmel,sama5d3-ddramc" },
{ /* sentinel */ }
};
static struct driver_d sama5_ddr_driver = {
.name = "sama5-ddramc",
.probe = sama5_ddr_probe,
.of_compatible = sama5_ddr_dt_ids,
};
static int sama5_ddr_init(void)
{
return platform_driver_register(&sama5_ddr_driver);
}
mem_initcall(sama5_ddr_init);
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