Add kalray coolidge arch/ support.
Signed-off-by: Clement Leger <cleger@xxxxxxxxx>
---
arch/k1c/Kconfig | 45 ++++++++++
arch/k1c/Makefile | 36 ++++++++
arch/k1c/boards/generic/Makefile | 0
arch/k1c/configs/generic_defconfig | 9 ++
arch/k1c/cpu/Makefile | 7 ++
arch/k1c/cpu/barebox.lds.S | 98 ++++++++++++++++++++++
arch/k1c/cpu/cpu.c | 22 +++++
arch/k1c/cpu/exception.S | 18 ++++
arch/k1c/cpu/start.S | 164 ++++++++++++++++++++++++++++++++++++
arch/k1c/include/asm/barrier.h | 18 ++++
arch/k1c/include/asm/bitops.h | 27 ++++++
arch/k1c/include/asm/bitsperlong.h | 12 +++
arch/k1c/include/asm/byteorder.h | 12 +++
arch/k1c/include/asm/common.h | 19 +++++
arch/k1c/include/asm/elf.h | 21 +++++
arch/k1c/include/asm/io.h | 14 ++++
arch/k1c/include/asm/linkage.h | 10 +++
arch/k1c/include/asm/posix_types.h | 12 +++
arch/k1c/include/asm/privilege.h | 166 +++++++++++++++++++++++++++++++++++++
arch/k1c/include/asm/sections.h | 12 +++
arch/k1c/include/asm/sfr.h | 61 ++++++++++++++
arch/k1c/include/asm/string.h | 14 ++++
arch/k1c/include/asm/swab.h | 14 ++++
arch/k1c/include/asm/sys_arch.h | 46 ++++++++++
arch/k1c/include/asm/types.h | 14 ++++
arch/k1c/include/asm/unaligned.h | 17 ++++
arch/k1c/lib/Makefile | 6 ++
arch/k1c/lib/asm-offsets.c | 11 +++
arch/k1c/lib/board.c | 20 +++++
arch/k1c/lib/cpuinfo.c | 20 +++++
arch/k1c/lib/dtb.c | 31 +++++++
arch/k1c/lib/poweroff.c | 43 ++++++++++
drivers/of/Kconfig | 2 +-
33 files changed, 1020 insertions(+), 1 deletion(-)
create mode 100644 arch/k1c/Kconfig
create mode 100644 arch/k1c/Makefile
create mode 100644 arch/k1c/boards/generic/Makefile
create mode 100644 arch/k1c/configs/generic_defconfig
create mode 100644 arch/k1c/cpu/Makefile
create mode 100644 arch/k1c/cpu/barebox.lds.S
create mode 100644 arch/k1c/cpu/cpu.c
create mode 100644 arch/k1c/cpu/exception.S
create mode 100644 arch/k1c/cpu/start.S
create mode 100644 arch/k1c/include/asm/barrier.h
create mode 100644 arch/k1c/include/asm/bitops.h
create mode 100644 arch/k1c/include/asm/bitsperlong.h
create mode 100644 arch/k1c/include/asm/byteorder.h
create mode 100644 arch/k1c/include/asm/common.h
create mode 100644 arch/k1c/include/asm/elf.h
create mode 100644 arch/k1c/include/asm/io.h
create mode 100644 arch/k1c/include/asm/linkage.h
create mode 100644 arch/k1c/include/asm/posix_types.h
create mode 100644 arch/k1c/include/asm/privilege.h
create mode 100644 arch/k1c/include/asm/sections.h
create mode 100644 arch/k1c/include/asm/sfr.h
create mode 100644 arch/k1c/include/asm/string.h
create mode 100644 arch/k1c/include/asm/swab.h
create mode 100644 arch/k1c/include/asm/sys_arch.h
create mode 100644 arch/k1c/include/asm/types.h
create mode 100644 arch/k1c/include/asm/unaligned.h
create mode 100644 arch/k1c/lib/Makefile
create mode 100644 arch/k1c/lib/asm-offsets.c
create mode 100644 arch/k1c/lib/board.c
create mode 100644 arch/k1c/lib/cpuinfo.c
create mode 100644 arch/k1c/lib/dtb.c
create mode 100644 arch/k1c/lib/poweroff.c
diff --git a/arch/k1c/Kconfig b/arch/k1c/Kconfig
new file mode 100644
index 000000000..f0f9d1728
--- /dev/null
+++ b/arch/k1c/Kconfig
@@ -0,0 +1,45 @@
+config K1C
+ bool
+ select 64BIT
+ select CLKDEV_LOOKUP
+ select COMMON_CLK
+ select COMMON_CLK_OF_PROVIDER
+ select FLEXIBLE_BOOTARGS
+ select GENERIC_FIND_NEXT_BIT
+ select OF_BAREBOX_DRIVERS
+ select OFDEVICE
+ select PARTITION
+ default y
+
+config PHYS_ADDR_T_64BIT
+ bool
+
+config 64BIT
+ bool
+ select ARCH_DMA_ADDR_T_64BIT
+ select PHYS_ADDR_T_64BIT
+ default y
+
+config ARCH_TEXT_BASE
+ hex
+ default 0x00000000
+
+menu "Kalray specific settings"
+
+config ARCHINFO
+ string
+ default "coolidge"
+
+config SMEM_SIZE
+ hex
+ default 0x400000
+
+config MALLOC_BASE
+ hex
+ default 0x100000000
+
+config MALLOC_SIZE
+ hex
+ default 0x800000
+ prompt "malloc area size"
+endmenu
diff --git a/arch/k1c/Makefile b/arch/k1c/Makefile
new file mode 100644
index 000000000..10852406f
--- /dev/null
+++ b/arch/k1c/Makefile
@@ -0,0 +1,36 @@
+KBUILD_DEFCONFIG := generic_defconfig
+
+CPPFLAGS += -fno-strict-aliasing
+
+board-$(CONFIG_GENERIC) := generic
+
+KALLSYMS += --symbol-prefix=_
+
+ifeq ($(CROSS_COMPILE),)
+CROSS_COMPILE := k1-elf-
+endif
+
+DEFAULT_CFLAGS := -nostdlib -fno-builtin -fstrict-align -g
+DEFAULT_CFLAGS += -DTEXT_BASE=$(CONFIG_TEXT_BASE)
+
+LIBGCC_PATH = $(dir $(shell $(CC) $(CFLAGS) --print-libgcc-file-name))
+
+CFLAGS += $(DEFAULT_CFLAGS)
+AFLAGS += $(DEFAULT_CFLAGS)
+
+LDFLAGS += -m elf64k1
+
+archprepare: maketools
+
+PHONY += maketools
+
+common-y += arch/k1c/lib/
+common-y += arch/k1c/cpu/
+
+lds-y += arch/k1c/cpu/barebox.lds
+
+cmd_barebox__ ?= $(LD) $(LDFLAGS) $(LDFLAGS_barebox) -o $@ \
+ -T $(barebox-lds) \
+ --start-group $(barebox-common) --end-group \
+ -L$(LIBGCC_PATH) -lgcc \
+ $(filter-out $(barebox-lds) $(barebox-common) FORCE ,$^)
diff --git a/arch/k1c/boards/generic/Makefile b/arch/k1c/boards/generic/Makefile
new file mode 100644
index 000000000..e69de29bb
diff --git a/arch/k1c/configs/generic_defconfig b/arch/k1c/configs/generic_defconfig
new file mode 100644
index 000000000..535f1cf8b
--- /dev/null
+++ b/arch/k1c/configs/generic_defconfig
@@ -0,0 +1,9 @@
+CONFIG_AUTO_COMPLETE=y
+CONFIG_BAUDRATE=115200
+# CONFIG_BOOTM is not set
+CONFIG_CMD_CMP=y
+CONFIG_CMD_OF_DUMP=y
+CONFIG_CMD_POWEROFF=y
+CONFIG_CONSOLE_RATP=y
+CONFIG_DRIVER_SERIAL_NS16550=y
+CONFIG_PINCTRL_SINGLE=y
diff --git a/arch/k1c/cpu/Makefile b/arch/k1c/cpu/Makefile
new file mode 100644
index 000000000..1d0635206
--- /dev/null
+++ b/arch/k1c/cpu/Makefile
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Copyright (C) 2019 Kalray Inc.
+#
+
+obj-y += start.o cpu.o exception.o
+extra-y += barebox.lds
diff --git a/arch/k1c/cpu/barebox.lds.S b/arch/k1c/cpu/barebox.lds.S
new file mode 100644
index 000000000..9b0c338d2
--- /dev/null
+++ b/arch/k1c/cpu/barebox.lds.S
@@ -0,0 +1,98 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#include <config.h>
+#include <asm/common.h>
+#include <asm/sys_arch.h>
+#include <asm-generic/barebox.lds.h>
+
+OUTPUT_FORMAT("elf64-k1")
+OUTPUT_ARCH("k1:k1c:64")
+
+#define K1C_ENTRY_ADDRESS 0x0
+#define DTB_DEFAULT_SIZE (24 * 1024)
+
+MEMORY
+{
+ smem : ORIGIN = 0, LENGTH = CONFIG_SMEM_SIZE
+}
+
+SECTIONS
+{
+ . = K1C_ENTRY_ADDRESS;
+ . = ALIGN(4);
+
+ __start = .;
+ .text : AT (__start) {
+ *(.startup);
+ _stext = .;
+ *(.text)
+ _etext = .;
+ } > smem
+
+ /* Exception vector must be aligned on a huge frontier */
+ .exception ALIGN(EXCEPTION_ALIGNMENT) :
+ {
+ _exception_start = ABSOLUTE(.);
+ /**
+ * First handler is at _exception_start + EXCEPTION_STRIDE
+ * In order to force getting to the next stride, add at
+ * least 1 byte of data. The next ALIGN will then be
+ * forced to get to the next stride.
+ */
+ . += 1;
+ . = ALIGN(EXCEPTION_STRIDE);
+
+ /* Entry for traps */
+ KEEP(*(.exception.trap));
+ . += 1;
+
+ /* Entry for interrupts */
+ . = ALIGN(EXCEPTION_STRIDE);
+ KEEP(*(.exception.interrupt));
+ . += 1;
+
+ /* Entry for syscall */
+ . = ALIGN(EXCEPTION_STRIDE);
+ KEEP(*(.exception.syscall));
+ } > smem
+
+ .rodata ALIGN(8) : {
+ *(.rodata*)
+ . = ALIGN(8);
+ RO_DATA_SECTION
+ } > smem
+
+ __etext = .; /* End of text and rodata section */
+
+ . = ALIGN(4);
+ .data : {
+ sdata = .;
+ _sdata = .;
+ *(.data)
+ edata = .;
+ _edata = .;
+ } > smem
+
+ .gdb_page ALIGN(4 * 1024) :
+ {
+ _debug_start = ABSOLUTE(.);
+ _debug_phy_start = ABSOLUTE(.);
+ . += 4 * 1024;
+ }
+ __debug_phy_end = ABSOLUTE(.);
+
+ /* We use store quad for bss init so align on 16 bytes */
+ .bss ALIGN(16):
+ {
+ __bss_start = .;
+ *(.shbss)
+ *(.bss)
+ *(COMMON)
+ } > smem
+ . = ALIGN(16);
+ __bss_stop = .;
+ __end = .;
+}
diff --git a/arch/k1c/cpu/cpu.c b/arch/k1c/cpu/cpu.c
new file mode 100644
index 000000000..209f333a2
--- /dev/null
+++ b/arch/k1c/cpu/cpu.c
@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#include <common.h>
+#include <asm/sfr.h>
+#include <asm/sys_arch.h>
+
+void k1c_lowlevel_setup(void)
+{
+ uint64_t ev_val = (uint64_t) &_exception_start | EXCEPTION_STRIDE;
+
+ /* Install exception handlers */
+ k1c_sfr_set(K1C_SFR_EV, ev_val);
+
+ /* Clear exception taken bit now that we setup our handlers */
+ k1c_sfr_clear_bit(K1C_SFR_PS, K1C_SFR_PS_ET_SHIFT);
+
+ /* Finally, make sure nobody disabled hardware trap before us */
+ k1c_sfr_clear_bit(K1C_SFR_PS, K1C_SFR_PS_HTD_SHIFT);
+}
diff --git a/arch/k1c/cpu/exception.S b/arch/k1c/cpu/exception.S
new file mode 100644
index 000000000..d1b44ae22
--- /dev/null
+++ b/arch/k1c/cpu/exception.S
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#include <linux/linkage.h>
+
+/**
+ * We do not aim at handling traps but at least, we want the CPU to
+ * stop when taking a trap.
+ * Note that we can not expect to be able to issue a print since
+ * it might be the cause of trap...
+ */
+.section .exception.trap, "ax", @progbits
+ENTRY(k1c_trap_handler):
+ goto k1c_trap_handler
+ ;;
+ENDPROC(k1c_trap_handler)
diff --git a/arch/k1c/cpu/start.S b/arch/k1c/cpu/start.S
new file mode 100644
index 000000000..4cbd3bbd5
--- /dev/null
+++ b/arch/k1c/cpu/start.S
@@ -0,0 +1,164 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#include <config.h>
+#include <linux/linkage.h>
+#include <asm/privilege.h>
+#include <asm/sys_arch.h>
+
+#define PS_VAL_WFXL(__field, __val) \
+ SFR_SET_VAL_WFXL(PS, __field, __val)
+
+#define PS_WFXL_START_VALUE PS_VAL_WFXL(HLE, 1) | \
+ PS_VAL_WFXL(USE, 1) | \
+ PS_VAL_WFXL(DCE, 1) | \
+ PS_VAL_WFXL(ICE, 1) | \
+ PS_VAL_WFXL(V64, 1) | \
+ PS_VAL_WFXL(ET, 0)
+
+#define PCR_VAL_WFXM(__field, __val) \
+ SFR_SET_VAL_WFXM(PCR, __field, __val)
+
+#define PCR_WFXM_START_VALUE PCR_VAL_WFXM(L1CE, 1)
+
+/* Enable STOP in WS */
+#define WS_ENABLE_WU2 (K1C_SFR_WS_WU2_MASK)
+
+#define WS_WFXL_VALUE (WS_ENABLE_WU2)
+
+.section .startup, "ax"
+ENTRY(k1c_start)
+ /* (Re)initialize performance counter */
+ make $r20 = 0x00000000
+ ;;
+ set $pmc = $r20
+ ;;
+ call asm_init_pl
+ ;;
+ /* Setup default processor status */
+ make $r25 = PS_WFXL_START_VALUE
+ ;;
+ wfxl $ps = $r25
+ ;;
+ make $r25 = PCR_WFXM_START_VALUE
+ ;;
+ wfxm $pcr = $r25
+ ;;
+ /* Clear BSS */
+ make $r22 = __bss_stop
+ make $r21 = __bss_start
+ ;;
+ sbfd $r22 = $r21, $r22
+ make $r24 = 0
+ ;;
+ /* Divide by 16 for hardware loop */
+ srld $r22, $r22, 4
+ make $r25 = 0
+ ;;
+ /* Clear bss with hardware loop */
+ loopdo $r22, clear_bss_done
+ ;;
+ sq 0[$r21] = $r24r25
+ addd $r21 = $r21, 16
+ ;;
+ clear_bss_done:
+ /* Setup stack */
+ make $sp, CONFIG_SMEM_SIZE
+ ;;
+ call k1c_lowlevel_setup
+ ;;
+ call k1c_start_barebox
+ ;;
+ goto k1c_proc_power_off
+ ;;
+ENDPROC(k1c_start)
+
+/**
+ * Initialize privilege level
+ */
+ENTRY(asm_init_pl)
+ get $r21 = $ps
+ ;;
+ /* Extract privilege level from $ps to check if we need to
+ * lower our privilege level (we might already be in PL1)
+ */
+ extfz $r20 = $r21, K1C_SFR_END(PS_PL), K1C_SFR_START(PS_PL)
+ ;;
+ /* If our pviliege level is not 0 (ie we are already in a less
+ * privilege level, then, somebody take care of setting the
+ * ring settings for us and we can return directly
+ */
+ cb.deqz $r20? delegate_pl
+ ;;
+ ret
+ ;;
+delegate_pl:
+ make $r21 = SYO_WFXL_VALUE
+ ;;
+ wfxl $syow = $r21
+ ;;
+ make $r21 = HTO_WFXL_VALUE
+ ;;
+ wfxl $htow = $r21
+ ;;
+ make $r21 = DO_WFXL_VALUE
+ ;;
+ wfxl $dow = $r21
+ ;;
+ make $r21 = MO_WFXL_VALUE
+ make $r22 = MO_WFXM_VALUE
+ ;;
+ wfxl $mow = $r21
+ ;;
+ wfxm $mow = $r22
+ ;;
+ make $r21 = ITO_WFXL_VALUE
+ make $r22 = ITO_WFXM_VALUE
+ ;;
+ wfxl $itow = $r21
+ ;;
+ wfxm $itow = $r21
+ ;;
+ make $r21 = PSO_WFXL_VALUE
+ ;;
+ wfxl $psow = $r21
+ ;;
+ make $r21 = PSO_WFXM_VALUE
+ ;;
+ wfxm $psow = $r21
+ ;;
+ /* Copy our $ps into $sps for 1:1 restoration */
+ get $r22 = $ps
+ ;;
+ /* We will return to $ra after rfe */
+ get $r21 = $ra
+ /* Set privilege level to +1 in $sps (relative level from the
+ * current one)
+ */
+ addd $r22 = $r22, PL_BAREBOX_REL_LEVEL
+ ;;
+ set $spc = $r21
+ ;;
+ set $sps = $r22
+ ;;
+ /* When using rfe, $spc and $sps will be restored in $ps and $pc,
+ * We will then return to the caller ($ra) in current PL + 1
+ */
+ rfe
+ ;;
+ENDPROC(asm_init_pl)
+
+ENTRY(k1c_proc_power_off):
+ dinval
+ make $r1 = WS_WFXL_VALUE
+ ;;
+ /* Enable STOP */
+ wfxl $ws, $r1
+ ;;
+1: stop
+ ;;
+ goto 1b
+ ;;
+ENDPROC(k1c_proc_power_off)
diff --git a/arch/k1c/include/asm/barrier.h b/arch/k1c/include/asm/barrier.h
new file mode 100644
index 000000000..7c1281e7a
--- /dev/null
+++ b/arch/k1c/include/asm/barrier.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#ifndef _ASM_K1C_BARRIER_H
+#define _ASM_K1C_BARRIER_H
+
+/* fence is sufficient to guarantee write ordering */
+#define wmb() __builtin_k1_fence()
+
+/* no L2 coherency, therefore rmb is D$ invalidation */
+#define rmb() __builtin_k1_dinval()
+
+/* general memory barrier */
+#define mb() do { wmb(); rmb(); } while (0)
+
+#endif /* _ASM_K1C_BARRIER_H */
diff --git a/arch/k1c/include/asm/bitops.h b/arch/k1c/include/asm/bitops.h
new file mode 100644
index 000000000..c22e5717b
--- /dev/null
+++ b/arch/k1c/include/asm/bitops.h
@@ -0,0 +1,27 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#ifndef _ASM_K1C_BITOPS_H
+#define _ASM_K1C_BITOPS_H
+
+#include <asm-generic/bitops/__ffs.h>
+#include <asm-generic/bitops/__fls.h>
+#include <asm-generic/bitops/ffs.h>
+#include <asm-generic/bitops/fls.h>
+#include <asm-generic/bitops/ffz.h>
+#include <asm-generic/bitops/hweight.h>
+#include <asm-generic/bitops/fls64.h>
+#include <asm-generic/bitops/find.h>
+#include <asm-generic/bitops/ops.h>
+
+#define set_bit(x, y) __set_bit(x, y)
+#define clear_bit(x, y) __clear_bit(x, y)
+#define change_bit(x, y) __change_bit(x, y)
+#define test_and_set_bit(x, y) __test_and_set_bit(x, y)
+#define test_and_clear_bit(x, y) __test_and_clear_bit(x, y)
+#define test_and_change_bit(x, y) __test_and_change_bit(x, y)
+
+#endif /* _ASM_K1C_BITOPS_H */
+
diff --git a/arch/k1c/include/asm/bitsperlong.h b/arch/k1c/include/asm/bitsperlong.h
new file mode 100644
index 000000000..42b669ace
--- /dev/null
+++ b/arch/k1c/include/asm/bitsperlong.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#ifndef _ASM_K1C_BITSPERLONG_H
+#define _ASM_K1C_BITSPERLONG_H
+
+#include <asm-generic/bitsperlong.h>
+
+#endif /* _ASM_K1C_BITSPERLONG_H */
+
diff --git a/arch/k1c/include/asm/byteorder.h b/arch/k1c/include/asm/byteorder.h
new file mode 100644
index 000000000..12b90bd66
--- /dev/null
+++ b/arch/k1c/include/asm/byteorder.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#ifndef _ASM_K1C_BYTEORDER_H
+#define _ASM_K1C_BYTEORDER_H
+
+#include <linux/byteorder/little_endian.h>
+
+#endif /* _ASM_K1C_BYTEORDER_H */
+
diff --git a/arch/k1c/include/asm/common.h b/arch/k1c/include/asm/common.h
new file mode 100644
index 000000000..81d31dc4c
--- /dev/null
+++ b/arch/k1c/include/asm/common.h
@@ -0,0 +1,19 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#ifndef _ASM_K1C_COMMON_H
+#define _ASM_K1C_COMMON_H
+
+#ifndef __ASSEMBLY__
+
+extern char _exception_start;
+
+void k1c_start_barebox(void);
+void k1c_lowlevel_setup(void);
+
+#endif
+
+#endif /* _ASM_K1C_COMMON_H */
+
diff --git a/arch/k1c/include/asm/elf.h b/arch/k1c/include/asm/elf.h
new file mode 100644
index 000000000..ff9b8b274
--- /dev/null
+++ b/arch/k1c/include/asm/elf.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#ifndef _ASM_K1C_ELF_H
+#define _ASM_K1C_ELF_H
+
+/*
+ * ELF register definitions..
+ */
+#include <linux/types.h>
+
+#define EM_KALRAY 0x1337
+
+#define ELF_ARCH EM_KALRAY
+#define ELF_CLASS ELFCLASS32
+#define ELF_DATA ELFDATA2MSB
+
+#endif /* _ASM_K1C_ELF_H */
+
diff --git a/arch/k1c/include/asm/io.h b/arch/k1c/include/asm/io.h
new file mode 100644
index 000000000..0345d05de
--- /dev/null
+++ b/arch/k1c/include/asm/io.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#ifndef _ASM_K1C_IO_H
+#define _ASM_K1C_IO_H
+
+#define IO_SPACE_LIMIT 0x0
+
+#include <asm/byteorder.h>
+#include <asm-generic/io.h>
+
+#endif /* _ASM_K1C_IO_H */
diff --git a/arch/k1c/include/asm/linkage.h b/arch/k1c/include/asm/linkage.h
new file mode 100644
index 000000000..9b0f103f9
--- /dev/null
+++ b/arch/k1c/include/asm/linkage.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#ifndef _ASM_K1C_LINKAGE_H
+#define _ASM_K1C_LINKAGE_H
+
+
+#endif /* _ASM_K1C_LINKAGE_H */
diff --git a/arch/k1c/include/asm/posix_types.h b/arch/k1c/include/asm/posix_types.h
new file mode 100644
index 000000000..0eba70be6
--- /dev/null
+++ b/arch/k1c/include/asm/posix_types.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#ifndef _ASM_K1C_POSIX_TYPES_H
+#define _ASM_K1C_POSIX_TYPES_H
+
+#include <asm-generic/posix_types.h>
+
+#endif /* _ASM_K1C_POSIX_TYPES_H */
+
diff --git a/arch/k1c/include/asm/privilege.h b/arch/k1c/include/asm/privilege.h
new file mode 100644
index 000000000..d3d1810f2
--- /dev/null
+++ b/arch/k1c/include/asm/privilege.h
@@ -0,0 +1,166 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#ifndef _ASM_K1C_PRIVILEGE_H
+#define _ASM_K1C_PRIVILEGE_H
+
+#include <asm/sys_arch.h>
+
+/**
+ * Privilege level stuff
+ */
+
+/* Relative kernel level (+1 from current privilege level) */
+#define PL_BAREBOX_REL_LEVEL 1
+
+/**
+ * Syscall owner configuration
+ */
+#define SYO_OWN(__field) \
+ SFR_SET_VAL_WFXL(SYO, __field, PL_BAREBOX_REL_LEVEL)
+
+#define SYO_WFXL_VALUE (SYO_OWN(Q0) | \
+ SYO_OWN(Q1) | \
+ SYO_OWN(Q2) | \
+ SYO_OWN(Q3))
+
+/**
+ * hardware trap owner configuration
+ */
+#define HTO_OWN(__field) \
+ SFR_SET_VAL_WFXL(HTO, __field, PL_BAREBOX_REL_LEVEL)
+
+#define HTO_WFXL_VALUE (HTO_OWN(OPC) | \
+ HTO_OWN(DMIS) | \
+ HTO_OWN(PSYS) | \
+ HTO_OWN(DSYS) | \
+ HTO_OWN(DECCG) | \
+ HTO_OWN(SECCG) | \
+ HTO_OWN(NOMAP) | \
+ HTO_OWN(PROT) | \
+ HTO_OWN(W2CL) | \
+ HTO_OWN(A2CL) | \
+ HTO_OWN(DE) | \
+ HTO_OWN(VSFR) | \
+ HTO_OWN(PLO))
+
+/**
+ * Interrupt owner configuration
+ */
+#define ITO_WFXL_OWN(__field) \
+ SFR_SET_VAL_WFXL(ITO, __field, PL_BAREBOX_REL_LEVEL)
+
+#define ITO_WFXL_VALUE (ITO_WFXL_OWN(IT0) | \
+ ITO_WFXL_OWN(IT1) | \
+ ITO_WFXL_OWN(IT2) | \
+ ITO_WFXL_OWN(IT3) | \
+ ITO_WFXL_OWN(IT4) | \
+ ITO_WFXL_OWN(IT5) | \
+ ITO_WFXL_OWN(IT6) | \
+ ITO_WFXL_OWN(IT7) | \
+ ITO_WFXL_OWN(IT8) | \
+ ITO_WFXL_OWN(IT9) | \
+ ITO_WFXL_OWN(IT10) | \
+ ITO_WFXL_OWN(IT11) | \
+ ITO_WFXL_OWN(IT12) | \
+ ITO_WFXL_OWN(IT13) | \
+ ITO_WFXL_OWN(IT14) | \
+ ITO_WFXL_OWN(IT15))
+
+#define ITO_WFXM_OWN(__field) \
+ SFR_SET_VAL_WFXM(ITO, __field, PL_BAREBOX_REL_LEVEL)
+
+#define ITO_WFXM_VALUE (ITO_WFXM_OWN(IT16) | \
+ ITO_WFXM_OWN(IT17) | \
+ ITO_WFXM_OWN(IT18) | \
+ ITO_WFXM_OWN(IT19) | \
+ ITO_WFXM_OWN(IT20) | \
+ ITO_WFXM_OWN(IT21) | \
+ ITO_WFXM_OWN(IT22) | \
+ ITO_WFXM_OWN(IT23) | \
+ ITO_WFXM_OWN(IT24) | \
+ ITO_WFXM_OWN(IT25) | \
+ ITO_WFXM_OWN(IT26) | \
+ ITO_WFXM_OWN(IT27) | \
+ ITO_WFXM_OWN(IT28) | \
+ ITO_WFXM_OWN(IT29) | \
+ ITO_WFXM_OWN(IT30) | \
+ ITO_WFXM_OWN(IT31))
+
+/**
+ * Misc owner configuration
+ */
+#define DO_OWN(__field) \
+ SFR_SET_VAL_WFXL(DO, __field, PL_BAREBOX_REL_LEVEL)
+
+#define DO_WFXL_VALUE (DO_OWN(B0) | \
+ DO_OWN(B1) | \
+ DO_OWN(W0) | \
+ DO_OWN(W1))
+
+/**
+ * Misc owner configuration
+ */
+#define MO_WFXL_OWN(__field) \
+ SFR_SET_VAL_WFXL(MO, __field, PL_BAREBOX_REL_LEVEL)
+
+#define MO_WFXL_VALUE (MO_WFXL_OWN(MMI) | \
+ MO_WFXL_OWN(RFE) | \
+ MO_WFXL_OWN(STOP) | \
+ MO_WFXL_OWN(SYNC) | \
+ MO_WFXL_OWN(PCR) | \
+ MO_WFXL_OWN(MSG) | \
+ MO_WFXL_OWN(MEN) | \
+ MO_WFXL_OWN(MES) | \
+ MO_WFXL_OWN(CSIT) | \
+ MO_WFXL_OWN(T0) | \
+ MO_WFXL_OWN(T1) | \
+ MO_WFXL_OWN(WD) | \
+ MO_WFXL_OWN(PM0) | \
+ MO_WFXL_OWN(PM1) | \
+ MO_WFXL_OWN(PM2) | \
+ MO_WFXL_OWN(PM3))
+
+#define MO_WFXM_OWN(__field) \
+ SFR_SET_VAL_WFXM(MO, __field, PL_BAREBOX_REL_LEVEL)
+
+#define MO_WFXM_VALUE (MO_WFXM_OWN(PMIT))
+
+/**
+ * $ps owner configuration
+ */
+#define PSO_WFXL_OWN(__field) \
+ SFR_SET_VAL_WFXL(PSO, __field, PL_BAREBOX_REL_LEVEL)
+
+#define PSO_WFXL_VALUE (PSO_WFXL_OWN(PL0) | \
+ PSO_WFXL_OWN(PL1) | \
+ PSO_WFXL_OWN(ET) | \
+ PSO_WFXL_OWN(HTD) | \
+ PSO_WFXL_OWN(IE) | \
+ PSO_WFXL_OWN(HLE) | \
+ PSO_WFXL_OWN(SRE) | \
+ PSO_WFXL_OWN(ICE) | \
+ PSO_WFXL_OWN(USE) | \
+ PSO_WFXL_OWN(DCE) | \
+ PSO_WFXL_OWN(MME) | \
+ PSO_WFXL_OWN(IL0) | \
+ PSO_WFXL_OWN(IL1) | \
+ PSO_WFXL_OWN(VS0) | \
+ PSO_WFXL_OWN(VS1))
+
+#define PSO_WFXM_OWN(__field) \
+ SFR_SET_VAL_WFXM(PSO, __field, PL_BAREBOX_REL_LEVEL)
+
+#define PSO_WFXM_VALUE (PSO_WFXM_OWN(V64) | \
+ PSO_WFXM_OWN(L2E) | \
+ PSO_WFXM_OWN(SME) | \
+ PSO_WFXM_OWN(SMR) | \
+ PSO_WFXM_OWN(PMJ0) | \
+ PSO_WFXM_OWN(PMJ1) | \
+ PSO_WFXM_OWN(PMJ2) | \
+ PSO_WFXM_OWN(PMJ3) | \
+ PSO_WFXM_OWN(MMUP))
+
+#endif /* _ASM_K1C_PRIVILEGE_H */
diff --git a/arch/k1c/include/asm/sections.h b/arch/k1c/include/asm/sections.h
new file mode 100644
index 000000000..85e76c013
--- /dev/null
+++ b/arch/k1c/include/asm/sections.h
@@ -0,0 +1,12 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#ifndef _ASM_K1C_SECTIONS_H
+#define _ASM_K1C_SECTIONS_H
+
+#include <asm-generic/sections.h>
+
+#endif /* _ASM_K1C_SECTIONS_H */
+
diff --git a/arch/k1c/include/asm/sfr.h b/arch/k1c/include/asm/sfr.h
new file mode 100644
index 000000000..3569924a8
--- /dev/null
+++ b/arch/k1c/include/asm/sfr.h
@@ -0,0 +1,61 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#ifndef _ASM_K1C_SFR_H
+#define _ASM_K1C_SFR_H
+
+#include <asm/sfr_defs.h>
+
+#define wfxl(_sfr, _val) __builtin_k1_wfxl(_sfr, _val)
+
+#define wfxm(_sfr, _val) __builtin_k1_wfxm(_sfr, _val)
+
+static inline void
+k1c_sfr_set_bit(unsigned char sfr, unsigned char bit)
+{
+ if (bit < 32)
+ wfxl(sfr, (uint64_t) (1 << bit) << 32);
+ else
+ wfxm(sfr, (uint64_t) 1 << bit);
+}
+
+static inline uint64_t make_sfr_val(uint64_t mask, uint64_t value)
+{
+ return ((value & 0xFFFFFFFF) << 32) | (mask & 0xFFFFFFFF);
+}
+
+static inline void
+k1c_sfr_set_mask(unsigned char sfr, uint64_t mask, uint64_t value)
+{
+ uint64_t wf_val;
+ /* Least significant bits */
+ if (mask & 0xFFFFFFFF) {
+ wf_val = make_sfr_val(value, mask);
+ wfxl(sfr, wf_val);
+ }
+
+ /* Most significant bits */
+ if (mask & (0xFFFFFFFFULL << 32)) {
+ value >>= 32;
+ mask >>= 32;
+ wf_val = make_sfr_val(value, mask);
+ wfxm(sfr, wf_val);
+ }
+}
+
+static inline void
+k1c_sfr_clear_bit(unsigned char sfr, unsigned char bit)
+{
+ if (bit < 32)
+ wfxl(sfr, 1 << bit);
+ else
+ wfxm(sfr, 1 << (bit - 32));
+}
+
+#define k1c_sfr_set(_sfr, _val) __builtin_k1_set(_sfr, _val)
+#define k1c_sfr_get(_sfr) __builtin_k1_get(_sfr)
+
+
+#endif /* _ASM_K1C_SFR_DEFS_H */
diff --git a/arch/k1c/include/asm/string.h b/arch/k1c/include/asm/string.h
new file mode 100644
index 000000000..902811b8a
--- /dev/null
+++ b/arch/k1c/include/asm/string.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#ifndef _ASM_K1C_STRING_H
+#define _ASM_K1C_STRING_H
+
+/**
+ * FIXME AUTO: Implement optimized memcpy and memset for k1c
+ */
+
+#endif /* _ASM_K1C_STRING_H */
+
diff --git a/arch/k1c/include/asm/swab.h b/arch/k1c/include/asm/swab.h
new file mode 100644
index 000000000..4149bf50f
--- /dev/null
+++ b/arch/k1c/include/asm/swab.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#ifndef _ASM_K1C_SWAB_H
+#define _ASM_K1C_SWAB_H
+
+/**
+ * FIXME AUTO: Implement optimized byte swap using sbmm for k1c
+ */
+
+#endif /* _ASM_K1C_SWAB_H */
+
diff --git a/arch/k1c/include/asm/sys_arch.h b/arch/k1c/include/asm/sys_arch.h
new file mode 100644
index 000000000..f7049fd37
--- /dev/null
+++ b/arch/k1c/include/asm/sys_arch.h
@@ -0,0 +1,46 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#ifndef _ASM_K1C_SYS_ARCH_H
+#define _ASM_K1C_SYS_ARCH_H
+
+#include <asm/sfr_defs.h>
+
+#define EXCEPTION_STRIDE 0x40
+#define EXCEPTION_ALIGNMENT 0x100
+
+#define K1C_SFR_START(__sfr_reg) \
+ (K1C_SFR_## __sfr_reg ## _SHIFT)
+
+#define K1C_SFR_END(__sfr_reg) \
+ (K1C_SFR_## __sfr_reg ## _SHIFT + K1C_SFR_## __sfr_reg ## _WIDTH - 1)
+
+/**
+ * Get the value to clear a sfr
+ */
+#define SFR_CLEAR(__sfr, __field, __lm) \
+ K1C_SFR_## __sfr ## _ ## __field ## _ ## __lm ## _CLEAR
+
+#define SFR_CLEAR_WFXL(__sfr, __field) SFR_CLEAR(__sfr, __field, WFXL)
+#define SFR_CLEAR_WFXM(__sfr, __field) SFR_CLEAR(__sfr, __field, WFXM)
+
+/**
+ * Get the value to set a sfr.
+ */
+#define SFR_SET_WFXL(__sfr, __field, __val) \
+ (__val << (K1C_SFR_ ## __sfr ## _ ## __field ## _SHIFT + 32))
+
+#define SFR_SET_WFXM(__sfr, __field, __val) \
+ (__val << (K1C_SFR_ ## __sfr ## _ ## __field ## _SHIFT))
+
+/**
+ * Generate the mask to clear and set a value using wfx{m|l}.
+ */
+#define SFR_SET_VAL_WFXL(__sfr, __field, __val) \
+ (SFR_SET_WFXL(__sfr, __field, __val) | SFR_CLEAR_WFXL(__sfr, __field))
+#define SFR_SET_VAL_WFXM(__sfr, __field, __val) \
+ (SFR_SET_WFXM(__sfr, __field, __val) | SFR_CLEAR_WFXM(__sfr, __field))
+
+#endif /* _ASM_K1C_SYS_ARCH_H */
diff --git a/arch/k1c/include/asm/types.h b/arch/k1c/include/asm/types.h
new file mode 100644
index 000000000..f58746ddf
--- /dev/null
+++ b/arch/k1c/include/asm/types.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#ifndef _ASM_K1C_TYPES_H
+#define _ASM_K1C_TYPES_H
+
+#include <asm-generic/int-ll64.h>
+
+typedef unsigned short umode_t;
+
+#endif /* _ASM_K1C_TYPES_H */
+
diff --git a/arch/k1c/include/asm/unaligned.h b/arch/k1c/include/asm/unaligned.h
new file mode 100644
index 000000000..37a5790a0
--- /dev/null
+++ b/arch/k1c/include/asm/unaligned.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#ifndef _ASM_K1C_UNALIGNED_H
+#define _ASM_K1C_UNALIGNED_H
+
+#include <linux/unaligned/le_struct.h>
+#include <linux/unaligned/be_byteshift.h>
+#include <linux/unaligned/generic.h>
+
+#define get_unaligned __get_unaligned_le
+#define put_unaligned __put_unaligned_le
+
+#endif /* _ASM_K1C_UNALIGNED_H */
+
diff --git a/arch/k1c/lib/Makefile b/arch/k1c/lib/Makefile
new file mode 100644
index 000000000..352e7034a
--- /dev/null
+++ b/arch/k1c/lib/Makefile
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Copyright (C) 2019 Kalray Inc.
+#
+
+obj-y += cpuinfo.o board.o dtb.o poweroff.o
diff --git a/arch/k1c/lib/asm-offsets.c b/arch/k1c/lib/asm-offsets.c
new file mode 100644
index 000000000..9ab4fc4d4
--- /dev/null
+++ b/arch/k1c/lib/asm-offsets.c
@@ -0,0 +1,11 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#include <linux/kbuild.h>
+
+int main(void)
+{
+ return 0;
+}
diff --git a/arch/k1c/lib/board.c b/arch/k1c/lib/board.c
new file mode 100644
index 000000000..d17a32614
--- /dev/null
+++ b/arch/k1c/lib/board.c
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#include <common.h>
+#include <malloc.h>
+#include <memory.h>
+#include <asm-generic/memory_layout.h>
+
+
+void __noreturn k1c_start_barebox(void)
+{
+ mem_malloc_init((void *)CONFIG_MALLOC_BASE,
+ (void *)(CONFIG_MALLOC_BASE + MALLOC_SIZE - 1));
+
+ start_barebox();
+
+ hang();
+}
diff --git a/arch/k1c/lib/cpuinfo.c b/arch/k1c/lib/cpuinfo.c
new file mode 100644
index 000000000..f17a0dc6b
--- /dev/null
+++ b/arch/k1c/lib/cpuinfo.c
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#include <common.h>
+#include <command.h>
+
+static int do_cpuinfo(int argc, char *argv[])
+{
+ printf("Kalray Coolidge\n");
+
+ return 0;
+}
+
+BAREBOX_CMD_START(cpuinfo)
+ .cmd = do_cpuinfo,
+ BAREBOX_CMD_DESC("show CPU information")
+ BAREBOX_CMD_GROUP(CMD_GRP_INFO)
+BAREBOX_CMD_END
diff --git a/arch/k1c/lib/dtb.c b/arch/k1c/lib/dtb.c
new file mode 100644
index 000000000..582967e72
--- /dev/null
+++ b/arch/k1c/lib/dtb.c
@@ -0,0 +1,31 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#include <common.h>
+#include <init.h>
+#include <of.h>
+
+extern char __dtb_start[];
+
+static int of_k1c_init(void)
+{
+ int ret;
+ struct device_node *root;
+
+ root = of_unflatten_dtb(__dtb_start);
+ if (IS_ERR(root)) {
+ ret = PTR_ERR(root);
+ panic("Failed to parse DTB: %d\n", ret);
+ }
+
+ ret = of_set_root_node(root);
+ if (ret)
+ panic("Failed to set of root node\n");
+
+ of_probe();
+
+ return 0;
+}
+core_initcall(of_k1c_init);
diff --git a/arch/k1c/lib/poweroff.c b/arch/k1c/lib/poweroff.c
new file mode 100644
index 000000000..001ca6b6c
--- /dev/null
+++ b/arch/k1c/lib/poweroff.c
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2019 Kalray Inc.
+ */
+
+#include <init.h>
+#include <common.h>
+#include <poweroff.h>
+
+static void __noreturn k1c_poweroff(struct poweroff_handler *handler)
+{
+ register int status asm("r0") = 0;
+
+ shutdown_barebox();
+
+ asm volatile ("scall 0xfff\n\t;;"
+ : : "r"(status)
+ : "r1", "r2", "r3", "r4", "r5", "r6", "r7",
+ "r8", "memory");
+ hang();
+}
+
+static int k1c_scall_poweroff_probe(struct device_d *dev)
+{
+ poweroff_handler_register_fn(k1c_poweroff);
+
+ return 0;
+}
+
+static __maybe_unused struct of_device_id k1c_scall_poweroff_id[] = {
+ {
+ .compatible = "kalray,k1c-scall-poweroff",
+ }, {
+ }
+};
+
+static struct driver_d k1c_scall_poweroff = {
+ .name = "k1c_scall_poweroff",
+ .probe = k1c_scall_poweroff_probe,
+ .of_compatible = DRV_OF_COMPAT(k1c_scall_poweroff_id),
+};
+
+device_platform_driver(k1c_scall_poweroff);
diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig
index 7436fc2de..24ab2eddb 100644
--- a/drivers/of/Kconfig
+++ b/drivers/of/Kconfig
@@ -4,7 +4,7 @@ config OFTREE
config OFTREE_MEM_GENERIC
depends on OFTREE
- depends on PPC || ARM || EFI_BOOTUP || OPENRISC || SANDBOX || RISCV
+ depends on PPC || ARM || EFI_BOOTUP || OPENRISC || SANDBOX || RISCV || K1C
def_bool y
config DTC
--
2.15.0.276.g89ea799
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