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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2021 Rouven Czerwinski, Pengutronix
*/
#define pr_fmt(fmt) "tqma6ul: " fmt
#include <common.h>
#include <bootsource.h>
#include <init.h>
#include <mach/imx/generic.h>
#include <mach/imx/bbu.h>
#include <of.h>
#include <string.h>
#include <linux/clk.h>
#include <asm/optee.h>
#include <asm-generic/memory_layout.h>
#include "tqma6ulx.h"
static const struct of_device_id mba6ulx_of_match[] = {
{ .compatible = "tq,imx6ul-tqma6ul2l" },
{ .compatible = "tq,imx6ul-tqma6ul2" },
{ .compatible = "tq,imx6ull-tqma6ull2" },
{ .compatible = "tq,imx6ull-tqma6ull2l" },
{ /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, mba6ulx_of_match);
#ifdef CONFIG_FIRMWARE_TQMA6UL_OPTEE
static int mba6ulx_optee_fixup(void)
{
struct device_node *overlay;
struct fdt_header *fdt;
struct device_node *root = of_get_root_node();
int ret;
if (!of_match_node(mba6ulx_of_match, root))
return 0;
fdt = (void*)OPTEE_OVERLAY_LOCATION;
overlay = of_unflatten_dtb(fdt, INT_MAX);
if (IS_ERR(overlay))
return PTR_ERR(overlay);
/* register the overlay for fixing up the kernel device tree */
ret = of_register_overlay(overlay);
if (ret) {
printf("cannot apply oftree overlay: %s\n", strerror(-ret));
goto err;
}
/*
* Apply the overlay to the live tree to enable OP-TEE support
* for barebox and to reserve the SDRAM regions occupied by
* OP-TEE
*/
of_overlay_apply_tree(root, overlay);
return 0;
err:
of_delete_node(overlay);
return ret;
}
postcore_initcall(mba6ulx_optee_fixup);
#endif
static int mba6ulx_probe(struct device *dev)
{
int flags;
struct clk *clk;
clk = clk_lookup("enet_ref_125m");
if (IS_ERR(clk))
pr_err("Cannot find enet_ref_125m: %pe\n", clk);
else
clk_enable(clk);
/* the bootloader is stored in one of the two boot partitions */
flags = bootsource_get_instance() == 1 ? BBU_HANDLER_FLAG_DEFAULT : 0;
imx6_bbu_internal_mmc_register_handler("SD", "/dev/mmc1.barebox", flags);
flags = bootsource_get_instance() == 0 ? BBU_HANDLER_FLAG_DEFAULT : 0;
imx6_bbu_internal_mmcboot_register_handler("eMMC", "/dev/mmc0", flags);
if (bootsource_get_instance() == 0)
of_device_enable_path("/chosen/environment-sd");
else
of_device_enable_path("/chosen/environment-emmc");
return 0;
}
static struct driver mba6ulx_board_driver = {
.name = "board-mba6ulx",
.probe = mba6ulx_probe,
.of_compatible = mba6ulx_of_match,
};
device_platform_driver(mba6ulx_board_driver);
BAREBOX_DEEP_PROBE_ENABLE(mba6ulx_of_match);
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