Commit f0f4a753 authored by Paul Cercueil's avatar Paul Cercueil Committed by Thomas Bogendoerfer

MIPS: generic: Add support for Ingenic SoCs

Add support for Ingenic SoCs in arch/mips/generic/.

The Kconfig changes are here to ensure that it is possible to compile
either a generic kernel that supports Ingenic SoCs, or a Ingenic-only
kernel, both using the same code base, to avoid duplicated code.
Signed-off-by: default avatarPaul Cercueil <paul@crapouillou.net>
Signed-off-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
parent 02bd530f
......@@ -13,7 +13,6 @@ platform-$(CONFIG_MIPS_COBALT) += cobalt/
platform-$(CONFIG_MACH_DECSTATION) += dec/
platform-$(CONFIG_MIPS_GENERIC) += generic/
platform-$(CONFIG_MACH_JAZZ) += jazz/
platform-$(CONFIG_MACH_INGENIC) += jz4740/
platform-$(CONFIG_LANTIQ) += lantiq/
platform-$(CONFIG_MACH_LOONGSON2EF) += loongson2ef/
platform-$(CONFIG_MACH_LOONGSON32) += loongson32/
......
......@@ -96,6 +96,23 @@ config MIPS_FIXUP_BIGPHYS_ADDR
config MIPS_GENERIC
bool
config MACH_INGENIC
bool
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_LITTLE_ENDIAN
select SYS_SUPPORTS_ZBOOT
select CPU_SUPPORTS_HUGEPAGES
select DMA_NONCOHERENT
select IRQ_MIPS_CPU
select PINCTRL
select GPIOLIB
select COMMON_CLK
select GENERIC_IRQ_CHIP
select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
select USE_OF
select CPU_SUPPORTS_CPUFREQ
select MIPS_EXTERNAL_TIMER
menu "Machine selection"
choice
......@@ -394,20 +411,11 @@ config MACH_JAZZ
Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
Olivetti M700-10 workstations.
config MACH_INGENIC
config MACH_INGENIC_SOC
bool "Ingenic SoC based machines"
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_LITTLE_ENDIAN
select MIPS_GENERIC
select MACH_INGENIC
select SYS_SUPPORTS_ZBOOT_UART16550
select CPU_SUPPORTS_HUGEPAGES
select DMA_NONCOHERENT
select IRQ_MIPS_CPU
select PINCTRL
select GPIOLIB
select COMMON_CLK
select GENERIC_IRQ_CHIP
select BUILTIN_DTB if MIPS_NO_APPENDED_DTB
select USE_OF
config LANTIQ
bool "Lantiq based platforms"
......
......@@ -73,6 +73,12 @@ config FIT_IMAGE_FDT_OCELOT
from Microsemi in the FIT kernel image.
This requires u-boot on the platform.
config BOARD_INGENIC
bool "Support boards based on Ingenic SoCs"
select MACH_INGENIC_GENERIC
help
Enable support for boards based on Ingenic SoCs.
config VIRT_BOARD_RANCHU
bool "Support Ranchu platform for Android emulator"
help
......
......@@ -11,4 +11,5 @@ obj-y += proc.o
obj-$(CONFIG_YAMON_DT_SHIM) += yamon-dt.o
obj-$(CONFIG_LEGACY_BOARD_SEAD3) += board-sead3.o
obj-$(CONFIG_LEGACY_BOARD_OCELOT) += board-ocelot.o
obj-$(CONFIG_MACH_INGENIC) += board-ingenic.o
obj-$(CONFIG_VIRT_BOARD_RANCHU) += board-ranchu.o
......@@ -8,7 +8,10 @@
# option) any later version.
#
# Note: order matters, keep the asm/mach-generic include last.
cflags-$(CONFIG_MACH_INGENIC_SOC) += -I$(srctree)/arch/mips/include/asm/mach-jz4740
cflags-$(CONFIG_MIPS_GENERIC) += -I$(srctree)/arch/mips/include/asm/mach-generic
load-$(CONFIG_MIPS_GENERIC) += 0xffffffff80100000
zload-$(CONFIG_MIPS_GENERIC) += 0xffffffff81000000
all-$(CONFIG_MIPS_GENERIC) := vmlinux.gz.itb
......
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Support for Ingenic SoCs
*
* Copyright (C) 2009-2010, Lars-Peter Clausen <lars@metafoo.de>
* Copyright (C) 2011, Maarten ter Huurne <maarten@treewalker.org>
* Copyright (C) 2020 Paul Cercueil <paul@crapouillou.net>
*/
#include <linux/of_address.h>
#include <linux/of_fdt.h>
#include <linux/pm.h>
#include <linux/sizes.h>
#include <linux/suspend.h>
#include <linux/types.h>
#include <asm/bootinfo.h>
#include <asm/machine.h>
#include <asm/reboot.h>
static __init char *ingenic_get_system_type(unsigned long machtype)
{
switch (machtype) {
case MACH_INGENIC_X1830:
return "X1830";
case MACH_INGENIC_X1000:
return "X1000";
case MACH_INGENIC_JZ4780:
return "JZ4780";
case MACH_INGENIC_JZ4770:
return "JZ4770";
case MACH_INGENIC_JZ4725B:
return "JZ4725B";
default:
return "JZ4740";
}
}
static __init const void *ingenic_fixup_fdt(const void *fdt, const void *match_data)
{
/*
* Old devicetree files for the qi,lb60 board did not have a /memory
* node. Hardcode the memory info here.
*/
if (!fdt_node_check_compatible(fdt, 0, "qi,lb60") &&
fdt_path_offset(fdt, "/memory") < 0)
early_init_dt_add_memory_arch(0, SZ_32M);
mips_machtype = (unsigned long)match_data;
system_type = ingenic_get_system_type(mips_machtype);
return fdt;
}
static const struct of_device_id ingenic_of_match[] __initconst = {
{ .compatible = "ingenic,jz4740", .data = (void *)MACH_INGENIC_JZ4740 },
{ .compatible = "ingenic,jz4725b", .data = (void *)MACH_INGENIC_JZ4725B },
{ .compatible = "ingenic,jz4770", .data = (void *)MACH_INGENIC_JZ4770 },
{ .compatible = "ingenic,jz4780", .data = (void *)MACH_INGENIC_JZ4780 },
{ .compatible = "ingenic,x1000", .data = (void *)MACH_INGENIC_X1000 },
{ .compatible = "ingenic,x1830", .data = (void *)MACH_INGENIC_X1830 },
{}
};
MIPS_MACHINE(ingenic) = {
.matches = ingenic_of_match,
.fixup_fdt = ingenic_fixup_fdt,
};
static void ingenic_wait_instr(void)
{
__asm__(".set push;\n"
".set mips3;\n"
"wait;\n"
".set pop;\n"
);
}
static void ingenic_halt(void)
{
for (;;)
ingenic_wait_instr();
}
static int __maybe_unused ingenic_pm_enter(suspend_state_t state)
{
ingenic_wait_instr();
return 0;
}
static const struct platform_suspend_ops ingenic_pm_ops __maybe_unused = {
.valid = suspend_valid_only_mem,
.enter = ingenic_pm_enter,
};
static int __init ingenic_pm_init(void)
{
if (boot_cpu_type() == CPU_XBURST) {
if (IS_ENABLED(CONFIG_PM_SLEEP))
suspend_set_ops(&ingenic_pm_ops);
_machine_halt = ingenic_halt;
}
return 0;
}
late_initcall(ingenic_pm_init);
# SPDX-License-Identifier: GPL-2.0
config MACH_INGENIC_GENERIC
bool
select MACH_INGENIC
select MACH_JZ4740
select MACH_JZ4770
select MACH_JZ4780
select MACH_X1000
choice
prompt "Machine type"
depends on MACH_INGENIC
depends on MACH_INGENIC_SOC
default INGENIC_GENERIC_BOARD
config INGENIC_GENERIC_BOARD
bool "Generic board"
select MACH_JZ4740
select MACH_JZ4770
select MACH_JZ4780
select MACH_X1000
select MACH_INGENIC_GENERIC
config JZ4740_QI_LB60
bool "Qi Hardware Ben NanoNote"
......
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