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authorLinus Torvalds <torvalds@linux-foundation.org>2020-12-17 13:41:27 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2020-12-17 13:41:27 -0800
commit0c6c887835b59c10602add88057c9c06f265effe (patch)
treeb1ef9be8f1bc9f133803673b42b1b701ef79ecf2 /arch/openrisc
parent8a5be36b9303ae167468d4f5e1b3c090b9981396 (diff)
parentd8398bf840f8964220508aff7901c924e322f5e8 (diff)
downloadlinux-0c6c887835b59c10602add88057c9c06f265effe.tar.bz2
Merge tag 'for-linus' of git://github.com/openrisc/linux
Pull OpenRISC updates from Stafford Horne: - New drivers and OpenRISC support for the LiteX platform - A bug fix to support userspace gdb debugging - Fixes one compile issue with blk-iocost * tag 'for-linus' of git://github.com/openrisc/linux: openrisc: add local64.h to fix blk-iocost build openrisc: fix trap for debugger breakpoint signalling openrisc: add support for LiteX drivers/tty/serial: add LiteUART driver dt-bindings: serial: document LiteUART bindings drivers/soc/litex: add LiteX SoC Controller driver dt-bindings: soc: document LiteX SoC Controller bindings dt-bindings: vendor: add vendor prefix for LiteX
Diffstat (limited to 'arch/openrisc')
-rw-r--r--arch/openrisc/boot/dts/or1klitex.dts55
-rw-r--r--arch/openrisc/configs/or1klitex_defconfig18
-rw-r--r--arch/openrisc/include/asm/Kbuild1
-rw-r--r--arch/openrisc/kernel/traps.c4
4 files changed, 75 insertions, 3 deletions
diff --git a/arch/openrisc/boot/dts/or1klitex.dts b/arch/openrisc/boot/dts/or1klitex.dts
new file mode 100644
index 000000000000..3f9867aa3844
--- /dev/null
+++ b/arch/openrisc/boot/dts/or1klitex.dts
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * LiteX-based System on Chip
+ *
+ * Copyright (C) 2019 Antmicro <www.antmicro.com>
+ */
+
+/dts-v1/;
+/ {
+ compatible = "opencores,or1ksim";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ interrupt-parent = <&pic>;
+
+ aliases {
+ serial0 = &serial0;
+ };
+
+ chosen {
+ bootargs = "console=liteuart";
+ };
+
+ memory@0 {
+ device_type = "memory";
+ reg = <0x00000000 0x10000000>;
+ };
+
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ cpu@0 {
+ compatible = "opencores,or1200-rtlsvn481";
+ reg = <0>;
+ clock-frequency = <100000000>;
+ };
+ };
+
+ pic: pic {
+ compatible = "opencores,or1k-pic";
+ #interrupt-cells = <1>;
+ interrupt-controller;
+ };
+
+ serial0: serial@e0002000 {
+ device_type = "serial";
+ compatible = "litex,liteuart";
+ reg = <0xe0002000 0x100>;
+ };
+
+ soc_ctrl0: soc_controller@e0000000 {
+ compatible = "litex,soc-controller";
+ reg = <0xe0000000 0xc>;
+ status = "okay";
+ };
+};
diff --git a/arch/openrisc/configs/or1klitex_defconfig b/arch/openrisc/configs/or1klitex_defconfig
new file mode 100644
index 000000000000..3c2c70d3d740
--- /dev/null
+++ b/arch/openrisc/configs/or1klitex_defconfig
@@ -0,0 +1,18 @@
+CONFIG_BLK_DEV_INITRD=y
+CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC=y
+CONFIG_BUG_ON_DATA_CORRUPTION=y
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_EMBEDDED=y
+CONFIG_HZ_100=y
+CONFIG_INITRAMFS_SOURCE="openrisc-rootfs.cpio.gz"
+CONFIG_OF_OVERLAY=y
+CONFIG_OPENRISC_BUILTIN_DTB="or1klitex"
+CONFIG_PANIC_ON_OOPS=y
+CONFIG_PRINTK_TIME=y
+CONFIG_LITEX_SOC_CONTROLLER=y
+CONFIG_SERIAL_LITEUART=y
+CONFIG_SERIAL_LITEUART_CONSOLE=y
+CONFIG_SOFTLOCKUP_DETECTOR=y
+CONFIG_TTY_PRINTK=y
diff --git a/arch/openrisc/include/asm/Kbuild b/arch/openrisc/include/asm/Kbuild
index ca5987e11053..442f3d3bcd90 100644
--- a/arch/openrisc/include/asm/Kbuild
+++ b/arch/openrisc/include/asm/Kbuild
@@ -1,6 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
generic-y += extable.h
generic-y += kvm_para.h
+generic-y += local64.h
generic-y += mcs_spinlock.h
generic-y += qspinlock_types.h
generic-y += qspinlock.h
diff --git a/arch/openrisc/kernel/traps.c b/arch/openrisc/kernel/traps.c
index 206e5325e61b..4d61333c2623 100644
--- a/arch/openrisc/kernel/traps.c
+++ b/arch/openrisc/kernel/traps.c
@@ -238,9 +238,7 @@ void __init trap_init(void)
asmlinkage void do_trap(struct pt_regs *regs, unsigned long address)
{
- force_sig_fault(SIGTRAP, TRAP_TRACE, (void __user *)address);
-
- regs->pc += 4;
+ force_sig_fault(SIGTRAP, TRAP_BRKPT, (void __user *)regs->pc);
}
asmlinkage void do_unaligned_access(struct pt_regs *regs, unsigned long address)