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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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bca28f8f6b
Some Exynos-based boards contain secure firmware and must use firmware
operations to set up some hardware.
This patch adds firmware operations for Exynos secure firmware and a way
for board code and device tree to specify that they must be used.
Example of use:
In board code:
...MACHINE_START(...)
/* ... */
.init_early = exynos_firmware_init,
/* ... */
MACHINE_END
In device tree:
/ {
/* ... */
firmware@0203F000 {
compatible = "samsung,secure-firmware";
reg = <0x0203F000 0x1000>;
};
/* ... */
};
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
68 lines
1.8 KiB
C
68 lines
1.8 KiB
C
/*
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* Samsung's EXYNOS4 flattened device tree enabled machine
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*
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* Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
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* http://www.samsung.com
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* Copyright (c) 2010-2011 Linaro Ltd.
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* www.linaro.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/of_platform.h>
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#include <linux/of_fdt.h>
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#include <linux/serial_core.h>
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#include <linux/memblock.h>
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#include <linux/clocksource.h>
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#include <asm/mach/arch.h>
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#include <plat/mfc.h>
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#include "common.h"
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static void __init exynos4_dt_map_io(void)
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{
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exynos_init_io(NULL, 0);
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}
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static void __init exynos4_dt_machine_init(void)
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{
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of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
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}
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static char const *exynos4_dt_compat[] __initdata = {
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"samsung,exynos4210",
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"samsung,exynos4212",
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"samsung,exynos4412",
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NULL
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};
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static void __init exynos4_reserve(void)
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{
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#ifdef CONFIG_S5P_DEV_MFC
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struct s5p_mfc_dt_meminfo mfc_mem;
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/* Reserve memory for MFC only if it's available */
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mfc_mem.compatible = "samsung,mfc-v5";
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if (of_scan_flat_dt(s5p_fdt_find_mfc_mem, &mfc_mem))
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s5p_mfc_reserve_mem(mfc_mem.roff, mfc_mem.rsize, mfc_mem.loff,
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mfc_mem.lsize);
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#endif
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}
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DT_MACHINE_START(EXYNOS4210_DT, "Samsung Exynos4 (Flattened Device Tree)")
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/* Maintainer: Thomas Abraham <thomas.abraham@linaro.org> */
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.smp = smp_ops(exynos_smp_ops),
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.init_irq = exynos4_init_irq,
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.map_io = exynos4_dt_map_io,
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.init_early = exynos_firmware_init,
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.init_machine = exynos4_dt_machine_init,
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.init_late = exynos_init_late,
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.init_time = exynos_init_time,
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.dt_compat = exynos4_dt_compat,
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.restart = exynos4_restart,
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.reserve = exynos4_reserve,
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MACHINE_END
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