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author | Stefan Bosch <stefan_b@posteo.net> | 2020-07-10 20:07:37 +0300 |
---|---|---|
committer | Tom Rini <trini@konsulko.com> | 2020-07-29 15:43:40 +0300 |
commit | d1611086e0058c0b701cd487fc9735ffcc9c6c4c (patch) | |
tree | cd2df35500b43e418cb05cb5d25ba8f3679e884b /arch/arm/cpu/armv7 | |
parent | e1e96ba6a21a7988d5dc9e33f7f078799b0890b9 (diff) | |
download | u-boot-d1611086e0058c0b701cd487fc9735ffcc9c6c4c.tar.xz |
arm: add support for SoC s5p4418 (cpu) / nanopi2 board
Changes in relation to FriendlyARM's U-Boot nanopi2-v2016.01:
- SPL not supported yet --> no spl-dir in arch/arm/cpu/armv7/s5p4418/.
Appropriate line in Makefile removed.
- cpu.c: '#include <cpu_func.h>' added.
- arch/arm/cpu/armv7/s5p4418/u-boot.lds removed, is not required
anylonger.
- "obj-$(CONFIG_ARCH_NEXELL) += s5p-common/" added to
arch/arm/cpu/armv7/Makefile since s5p-common/pwm.c is used instead
of drivers/pwm/pwm-nexell.c.
- s5p4418.dtsi: '#include "../../../include/generated/autoconf.h"'
removed, is not necessary, error at out-of-tree building.
'#ifdef CONFIG_CPU_NXP4330'-blocks (2x) removed. Some minor changes
regarding mmc. 'u-boot,dm-pre-reloc' added to dp0 because of added
DM_VIDEO support.
- board/s5p4418/ renamed to board/friendlyarm/
- All s5p4418-boards except nanopi2 removed because there is no
possibility to test the other boards.
- Kconfig: Changes to have a structure like mach-bcm283x (RaspberryPi),
e.g. "config ..." entries moved from/to other Kconfig.
- "CONFIG_" removed from several s5p4418/nanopi2 specific defines
because the appropriate values do not need to be configurable.
- nanopi2/board.c: All getenv(), getenv_ulong(), setenv() and saveenv()
renamed to env_get(), env_get_ulong(), env_set() and env_save(),
respectively. MACH_TYPE_S5P4418 is not defined anymore, therefore
appropriate code removed (not necessary for DT-kernels).
- nanopi2/onewire.c: All crc8() renamed to crc8_ow() because crc8() is
already defined in lib/crc8.c (with different parameters).
- dts: "nexell,s5pxx18-i2c" used instead of "i2c-gpio", i2c0 and
i2c1 added. gmac-, ehci- and dwc2otg-entries removed because the
appropriate functionality is not supported yet. New mmc-property
"mmcboost" added.
s5p4418-pinctrl.dtsi: gmac-entries removed, mmc- and i2c-entries
added.
- '#ifdef CONFIG...' changed to 'if (IS_ENABLED(CONFIG...))' where
possible (and similar).
Signed-off-by: Stefan Bosch <stefan_b@posteo.net>
Diffstat (limited to 'arch/arm/cpu/armv7')
-rw-r--r-- | arch/arm/cpu/armv7/Makefile | 2 | ||||
-rw-r--r-- | arch/arm/cpu/armv7/s5p4418/Makefile | 6 | ||||
-rw-r--r-- | arch/arm/cpu/armv7/s5p4418/cpu.c | 121 |
3 files changed, 129 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/Makefile b/arch/arm/cpu/armv7/Makefile index 8c955d0d52..0e83e394d5 100644 --- a/arch/arm/cpu/armv7/Makefile +++ b/arch/arm/cpu/armv7/Makefile @@ -42,3 +42,5 @@ obj-$(CONFIG_RMOBILE) += rmobile/ obj-$(if $(filter stv0991,$(SOC)),y) += stv0991/ obj-$(CONFIG_ARCH_SUNXI) += sunxi/ obj-$(CONFIG_VF610) += vf610/ +obj-$(CONFIG_ARCH_S5P4418) += s5p4418/ +obj-$(CONFIG_ARCH_NEXELL) += s5p-common/ diff --git a/arch/arm/cpu/armv7/s5p4418/Makefile b/arch/arm/cpu/armv7/s5p4418/Makefile new file mode 100644 index 0000000000..321b257b6d --- /dev/null +++ b/arch/arm/cpu/armv7/s5p4418/Makefile @@ -0,0 +1,6 @@ +# SPDX-License-Identifier: GPL-2.0+ +# +# (C) Copyright 2016 Nexell +# Hyunseok, Jung <hsjung@nexell.co.kr> + +obj-y += cpu.o diff --git a/arch/arm/cpu/armv7/s5p4418/cpu.c b/arch/arm/cpu/armv7/s5p4418/cpu.c new file mode 100644 index 0000000000..8add9474ad --- /dev/null +++ b/arch/arm/cpu/armv7/s5p4418/cpu.c @@ -0,0 +1,121 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2016 Nexell + * Hyunseok, Jung <hsjung@nexell.co.kr> + */ + +#include <common.h> +#include <command.h> +#include <asm/system.h> +#include <asm/cache.h> +#include <asm/sections.h> +#include <asm/io.h> +#include <asm/arch/nexell.h> +#include <asm/arch/clk.h> +#include <asm/arch/reset.h> +#include <asm/arch/tieoff.h> +#include <cpu_func.h> +#include <linux/delay.h> + +DECLARE_GLOBAL_DATA_PTR; + +#ifndef CONFIG_ARCH_CPU_INIT +#error must be define the macro "CONFIG_ARCH_CPU_INIT" +#endif + +void s_init(void) +{ +} + +static void cpu_soc_init(void) +{ + /* + * NOTE> ALIVE Power Gate must enable for Alive register access. + * must be clear wfi jump address + */ + writel(1, ALIVEPWRGATEREG); + writel(0xFFFFFFFF, SCR_ARM_SECOND_BOOT); + + /* write 0xf0 on alive scratchpad reg for boot success check */ + writel(readl(SCR_SIGNAGURE_READ) | 0xF0, (SCR_SIGNAGURE_SET)); + + /* set l2 cache tieoff */ + nx_tieoff_set(NX_TIEOFF_CORTEXA9MP_TOP_QUADL2C_L2RET1N_0, 1); + nx_tieoff_set(NX_TIEOFF_CORTEXA9MP_TOP_QUADL2C_L2RET1N_1, 1); +} + +#ifdef CONFIG_PL011_SERIAL +static void serial_device_init(void) +{ + char dev[10]; + int id; + + sprintf(dev, "nx-uart.%d", CONFIG_CONS_INDEX); + id = RESET_ID_UART0 + CONFIG_CONS_INDEX; + + struct clk *clk = clk_get((const char *)dev); + + /* reset control: Low active ___|--- */ + nx_rstcon_setrst(id, RSTCON_ASSERT); + udelay(10); + nx_rstcon_setrst(id, RSTCON_NEGATE); + udelay(10); + + /* set clock */ + clk_disable(clk); + clk_set_rate(clk, CONFIG_PL011_CLOCK); + clk_enable(clk); +} +#endif + +int arch_cpu_init(void) +{ + flush_dcache_all(); + cpu_soc_init(); + clk_init(); + + if (IS_ENABLED(CONFIG_PL011_SERIAL)) + serial_device_init(); + + return 0; +} + +#if defined(CONFIG_DISPLAY_CPUINFO) +int print_cpuinfo(void) +{ + return 0; +} +#endif + +void reset_cpu(ulong ignored) +{ + void *clkpwr_reg = (void *)PHY_BASEADDR_CLKPWR; + const u32 sw_rst_enb_bitpos = 3; + const u32 sw_rst_enb_mask = 1 << sw_rst_enb_bitpos; + const u32 sw_rst_bitpos = 12; + const u32 sw_rst_mask = 1 << sw_rst_bitpos; + int pwrcont = 0x224; + int pwrmode = 0x228; + u32 read_value; + + read_value = readl((void *)(clkpwr_reg + pwrcont)); + + read_value &= ~sw_rst_enb_mask; + read_value |= 1 << sw_rst_enb_bitpos; + + writel(read_value, (void *)(clkpwr_reg + pwrcont)); + writel(sw_rst_mask, (void *)(clkpwr_reg + pwrmode)); +} + +void enable_caches(void) +{ + /* Enable D-cache. I-cache is already enabled in start.S */ + dcache_enable(); +} + +#if defined(CONFIG_ARCH_MISC_INIT) +int arch_misc_init(void) +{ + return 0; +} +#endif /* CONFIG_ARCH_MISC_INIT */ |