mirror of
https://github.com/torvalds/linux.git
synced 2024-11-07 20:51:47 +00:00
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
/*
|
|
* Samsung's EXYNOS4 flattened device tree enabled machine
|
|
*
|
|
* Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
|
|
* http://www.samsung.com
|
|
* Copyright (c) 2010-2011 Linaro Ltd.
|
|
* www.linaro.org
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/of_platform.h>
|
|
#include <linux/of_fdt.h>
|
|
#include <linux/serial_core.h>
|
|
#include <linux/memblock.h>
|
|
#include <linux/clocksource.h>
|
|
|
|
#include <asm/mach/arch.h>
|
|
#include <plat/mfc.h>
|
|
|
|
#include "common.h"
|
|
|
|
static void __init exynos4_dt_map_io(void)
|
|
{
|
|
exynos_init_io(NULL, 0);
|
|
}
|
|
|
|
static void __init exynos4_dt_machine_init(void)
|
|
{
|
|
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
|
|
}
|
|
|
|
static char const *exynos4_dt_compat[] __initdata = {
|
|
"samsung,exynos4210",
|
|
"samsung,exynos4212",
|
|
"samsung,exynos4412",
|
|
NULL
|
|
};
|
|
|
|
static void __init exynos4_reserve(void)
|
|
{
|
|
#ifdef CONFIG_S5P_DEV_MFC
|
|
struct s5p_mfc_dt_meminfo mfc_mem;
|
|
|
|
/* Reserve memory for MFC only if it's available */
|
|
mfc_mem.compatible = "samsung,mfc-v5";
|
|
if (of_scan_flat_dt(s5p_fdt_find_mfc_mem, &mfc_mem))
|
|
s5p_mfc_reserve_mem(mfc_mem.roff, mfc_mem.rsize, mfc_mem.loff,
|
|
mfc_mem.lsize);
|
|
#endif
|
|
}
|
|
DT_MACHINE_START(EXYNOS4210_DT, "Samsung Exynos4 (Flattened Device Tree)")
|
|
/* Maintainer: Thomas Abraham <thomas.abraham@linaro.org> */
|
|
.smp = smp_ops(exynos_smp_ops),
|
|
.init_irq = exynos4_init_irq,
|
|
.map_io = exynos4_dt_map_io,
|
|
.init_early = exynos_firmware_init,
|
|
.init_machine = exynos4_dt_machine_init,
|
|
.init_late = exynos_init_late,
|
|
.init_time = exynos_init_time,
|
|
.dt_compat = exynos4_dt_compat,
|
|
.restart = exynos4_restart,
|
|
.reserve = exynos4_reserve,
|
|
MACHINE_END
|