target/nios2: Remove the deprecated Nios II target

The Nios II target is deprecated since v8.2 in commit 9997771bc1
("target/nios2: Deprecate the Nios II architecture").

Remove:
- Buildsys / CI infra
- User emulation
- System emulation (10m50-ghrd & nios2-generic-nommu machines)
- Tests

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>
Message-Id: <20240327144806.11319-3-philmd@linaro.org>

7 files changed, 0 insertions, 430 deletions

diff --git a/tests/tcg/nios2/10m50-ghrd.ld b/tests/tcg/nios2/10m50-ghrd.ld
deleted file mode 100644
index 71cdda4..0000000
--- a/tests/tcg/nios2/10m50-ghrd.ld
+++ /dev/null
@@ -1,70 +0,0 @@
-/*
- * Link script for the Nios2 10m50-ghrd board.
- *
- * Copyright Linaro Ltd 2022
- * SPDX-License-Identifier: GPL-2.0-or-later
- */
-
-MEMORY
-{
-  tpf (rx)  : ORIGIN = 0xc0000000, LENGTH = 1K
-  ram (rwx) : ORIGIN = 0xc8000000, LENGTH = 128M
-}
-
-PHDRS
-{
-  RAM PT_LOAD;
-}
-
-ENTRY(_start)
-EXTERN(_start)
-EXTERN(_interrupt)
-EXTERN(_fast_tlb_miss)
-
-SECTIONS
-{
-    /* Begin at the (hardcoded) _interrupt entry point. */
-    .text 0xc8000120 : {
-        *(.text.intr)
-        *(.text .text.* .gnu.linkonce.t.*)
-    } >ram :RAM
-
-    .rodata : ALIGN(4) {
-        *(.rodata .rodata.* .gnu.linkonce.r.*)
-    } > ram :RAM
-
-    .eh_frame_hdr : ALIGN (4) {
-        KEEP (*(.eh_frame_hdr))
-        *(.eh_frame_entry .eh_frame_entry.*)
-    } >ram :RAM
-    .eh_frame : ALIGN (4) {
-        KEEP (*(.eh_frame)) *(.eh_frame.*)
-    } >ram :RAM
-
-    .data : ALIGN(4) {
-        *(.shdata)
-        *(.data .data.* .gnu.linkonce.d.*)
-    } >ram :RAM
-
-    HIDDEN (_gp = ALIGN(16) + 0x7ff0);
-    PROVIDE_HIDDEN (gp = _gp);
-    .got : ALIGN(4) {
-        *(.got.plt) *(.igot.plt) *(.got) *(.igot)
-    } >ram :RAM
-
-    .sdata : ALIGN(4) {
-        *(.sdata .sdata.* .gnu.linkonce.s.*)
-    } >ram :RAM
-
-    .bss : ALIGN(4) {
-         __bss_start = ABSOLUTE(.);
-        *(.sbss .sbss.* .gnu.linkonce.sb.*)
-        *(.scommon)
-        *(.bss .bss.* .gnu.linkonce.b.*)
-        *(COMMON)
-        . = ALIGN(4);
-        __bss_end = ABSOLUTE(.);
-    } >ram :RAM
-
-    __stack = ORIGIN(ram) + LENGTH(ram);
-}
diff --git a/tests/tcg/nios2/Makefile.softmmu-target b/tests/tcg/nios2/Makefile.softmmu-target
deleted file mode 100644
index bc7fd55..0000000
--- a/tests/tcg/nios2/Makefile.softmmu-target
+++ /dev/null
@@ -1,32 +0,0 @@
-#
-# Nios2 system tests
-#
-# Copyright Linaro Ltd 2022
-# SPDX-License-Identifier: GPL-2.0-or-later
-#
-
-NIOS2_SYSTEM_SRC = $(SRC_PATH)/tests/tcg/nios2
-VPATH += $(NIOS2_SYSTEM_SRC)
-
-# These objects provide the basic boot code and helper functions for all tests
-CRT_OBJS = boot.o intr.o $(MINILIB_OBJS)
-LINK_SCRIPT = $(NIOS2_SYSTEM_SRC)/10m50-ghrd.ld
-
-CFLAGS  += -nostdlib -g -O0 $(MINILIB_INC)
-LDFLAGS += -Wl,-T$(LINK_SCRIPT) -static -nostdlib $(CRT_OBJS) -lgcc
-
-%.o: %.S
-	$(call quiet-command, $(CC) $(CFLAGS) $(EXTRA_CFLAGS) -x assembler-with-cpp -c $< -o $@, AS, $@)
-
-%.o: %.c
-	$(call quiet-command, $(CC) $(CFLAGS) $(EXTRA_CFLAGS) -c $< -o $@, CC, $@)
-
-# Build and link the tests
-%: %.o $(LINK_SCRIPT) $(CRT_OBJS)
-	$(call quiet-command, $(CC) $(CFLAGS) $(EXTRA_CFLAGS) $< -o $@ $(LDFLAGS), LD, $@)
-
-QEMU_OPTS = -M 10m50-ghrd,vic=on -semihosting-config enable=on,target=native,chardev=output -kernel
-
-memory: CFLAGS+=-DCHECK_UNALIGNED=0
-TESTS += $(MULTIARCH_TESTS)
-TESTS += test-shadow-1
diff --git a/tests/tcg/nios2/Makefile.target b/tests/tcg/nios2/Makefile.target
deleted file mode 100644
index b38e235..0000000
--- a/tests/tcg/nios2/Makefile.target
+++ /dev/null
@@ -1,11 +0,0 @@
-# nios2 specific test tweaks
-
-# Currently nios2 signal handling is broken
-run-signals: signals
-	$(call skip-test, $<, "BROKEN")
-run-plugin-signals-with-%:
-	$(call skip-test, $<, "BROKEN")
-run-linux-test: linux-test
-	$(call skip-test, $<, "BROKEN")
-run-plugin-linux-test-with-%:
-	$(call skip-test, $<, "BROKEN")
diff --git a/tests/tcg/nios2/boot.S b/tests/tcg/nios2/boot.S
deleted file mode 100644
index f6771cb..0000000
--- a/tests/tcg/nios2/boot.S
+++ /dev/null
@@ -1,218 +0,0 @@
-/*
- * Minimal Nios2 system boot code.
- *
- * Copyright Linaro Ltd 2022
- * SPDX-License-Identifier: GPL-2.0-or-later
- */
-
-#include "semicall.h"
-
-        .text
-	.set	noat
-
-_start:
-	/* Linker script defines stack at end of ram. */
-	movia	sp, __stack
-
-	/* Install trampoline to _fast_tlb_miss at hardcoded vector. */
-	movia	r4, 0xc0000100
-	movia	r5, _ftm_tramp
-	movi	r6, .L__ftm_end - _ftm_tramp
-	call	memcpy
-
-	/* Zero the bss to satisfy C. */
-	movia	r4, __bss_start
-	movia	r6, __bss_end
-	sub	r6, r6, r4
-	movi	r5, 0
-	call	memset
-
-	/* Test! */
-	call	main
-
-	/* Exit with main's return value. */
-	movi	r4, HOSTED_EXIT
-	mov	r5, r2
-	semihosting_call
-
-	.globl	_start
-	.type	_start, @function
-	.size	_start, . - _start
-
-_ftm_tramp:
-	movia	et, _fast_tlb_miss
-	jmp	et
-.L__ftm_end:
-
-	.type	_ftm_tramp, @function
-	.size	_ftm_tramp, . - _ftm_tramp
-
-#define dst	r4
-#define src	r5
-#define len	r6
-
-memcpy:
-	/* Store return value right away, per API */
-	mov	r2, dst
-
-	/* Check for both dst and src aligned. */
-	or	at, dst, src
-	andi	at, at, 3
-	bne	at, zero, .L_mc_test1
-
-	/* Copy blocks of 8. */
-
-	movi	at, 8
-	bltu	len, at, .L_mc_test4
-
-.L_mc_loop8:
-	ldw	r8, 0(src)
-	ldw	r9, 4(src)
-	addi	src, src, 8
-	addi	dst, dst, 8
-	subi	len, len, 8
-	stw	r8, -8(dst)
-	stw	r9, -4(dst)
-	bgeu	len, at, .L_mc_loop8
-
-	/* Copy final aligned block of 4. */
-
-.L_mc_test4:
-	movi	at, 4
-	bltu	len, at, .L_mc_test1
-
-	ldw	r8, 0(src)
-	addi	src, src, 4
-	addi	dst, dst, 4
-	subi	len, len, 4
-	stw	r8, -4(dst)
-
-	/* Copy single bytes to finish. */
-
-.L_mc_test1:
-	beq	len, zero, .L_mc_done
-
-.L_mc_loop1:
-	ldb	r8, 0(src)
-	addi	src, src, 1
-	addi	dst, dst, 1
-	subi	len, len, 1
-	stb	r8, -1(dst)
-	bne	len, zero, .L_mc_loop1
-
-.L_mc_done:
-	ret
-
-#undef dst
-#undef src
-#undef len
-
-	.global	memcpy
-	.type	memcpy, @function
-	.size	memcpy, . - memcpy
-
-#define dst	r4
-#define val	r5
-#define len	r6
-
-memset:
-	/* Store return value right away, per API */
-	mov	r2, dst
-
-	/* Check for small blocks; fall back to bytewise. */
-	movi	r3, 8
-	bltu	len, r3, .L_ms_test1
-
-	/* Replicate the byte across the word. */
-	andi	val, val, 0xff
-	slli	at, val, 8
-	or	val, val, at
-	slli	at, val, 16
-	or	val, val, at
-
-	/* Check for destination alignment; realign if needed. */
-	andi	at, dst, 3
-	bne	at, zero, .L_ms_align
-
-	/* Set blocks of 8. */
-
-.L_ms_loop8:
-	stw	val, 0(dst)
-	stw	val, 4(dst)
-	addi	dst, dst, 8
-	subi	len, len, 8
-	bgeu	len, r3, .L_ms_loop8
-
-	/* Set final aligned block of 4. */
-
-.L_ms_test4:
-	movi	at, 4
-	bltu	len, at, .L_ms_test1
-
-	stw	r8, 0(dst)
-	addi	dst, dst, 4
-	subi	len, len, 4
-	stw	r8, -4(dst)
-
-	/* Set single bytes to finish. */
-
-.L_ms_test1:
-	beq	len, zero, .L_ms_done
-
-.L_ms_loop1:
-	stb	r8, 0(dst)
-	addi	dst, dst, 1
-	subi	len, len, 1
-	bne	len, zero, .L_ms_loop1
-
-.L_ms_done:
-	ret
-
-	/* Realign for a large block, len >= 8. */
-.L_ms_align:
-	andi	at, dst, 1
-	beq	at, zero, 2f
-
-	stb	val, 0(dst)
-	addi	dst, dst, 1
-	subi	len, len, 1
-
-2:	andi	at, dst, 2
-	beq	at, zero, 4f
-
-	sth	val, 0(dst)
-	addi	dst, dst, 2
-	subi	len, len, 2
-
-4:	bgeu	len, r3, .L_ms_loop8
-	br	.L_ms_test4
-
-#undef dst
-#undef val
-#undef len
-
-	.global	memset
-	.type	memset, @function
-	.size	memset, . - memset
-
-/*
- * void __sys_outc(char c);
- */
-__sys_outc:
-	subi	sp, sp, 16
-	stb	r4, 0(sp)	/* buffer[0] = c */
-	movi	at, 1
-	stw	at, 4(sp)	/* STDOUT_FILENO */
-	stw	sp, 8(sp)	/* buffer */
-	stw	at, 12(sp)	/* len */
-
-	movi	r4, HOSTED_WRITE
-	addi	r5, sp, 4
-	semihosting_call
-
-	addi	sp, sp, 16
-	ret
-
-	.global	__sys_outc
-	.type	__sys_outc, @function
-	.size	__sys_outc, . - __sys_outc
diff --git a/tests/tcg/nios2/intr.S b/tests/tcg/nios2/intr.S
deleted file mode 100644
index c173069..0000000
--- a/tests/tcg/nios2/intr.S
+++ /dev/null
@@ -1,31 +0,0 @@
-/*
- * Minimal Nios2 system boot code -- exit on interrupt.
- *
- * Copyright Linaro Ltd 2022
- * SPDX-License-Identifier: GPL-2.0-or-later
- */
-
-#include "semicall.h"
-
-        .section .text.intr, "ax"
-	.global	_interrupt
-	.type	_interrupt, @function
-
-_interrupt:
-	rdctl	r5, exception		/* extract exception.CAUSE */
-	srli	r5, r5, 2
-	movi	r4, HOSTED_EXIT
-	semihosting_call
-
-	.size	_interrupt, . - _interrupt
-
-        .text
-	.global	_fast_tlb_miss
-	.type	_fast_tlb_miss, @function
-
-_fast_tlb_miss:
-	movi	r5, 32
-	movi	r4, HOSTED_EXIT
-	semihosting_call
-
-	.size	_fast_tlb_miss, . - _fast_tlb_miss
diff --git a/tests/tcg/nios2/semicall.h b/tests/tcg/nios2/semicall.h
deleted file mode 100644
index 6ad4978..0000000
--- a/tests/tcg/nios2/semicall.h
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Nios2 semihosting interface.
- *
- * Copyright Linaro Ltd 2022
- * SPDX-License-Identifier: GPL-2.0-or-later
- */
-
-#ifndef SEMICALL_H
-#define SEMICALL_H
-
-#define HOSTED_EXIT          0
-#define HOSTED_INIT_SIM      1
-#define HOSTED_OPEN          2
-#define HOSTED_CLOSE         3
-#define HOSTED_READ          4
-#define HOSTED_WRITE         5
-#define HOSTED_LSEEK         6
-#define HOSTED_RENAME        7
-#define HOSTED_UNLINK        8
-#define HOSTED_STAT          9
-#define HOSTED_FSTAT         10
-#define HOSTED_GETTIMEOFDAY  11
-#define HOSTED_ISATTY        12
-#define HOSTED_SYSTEM        13
-
-#define semihosting_call     break 1
-
-#endif /* SEMICALL_H */
diff --git a/tests/tcg/nios2/test-shadow-1.S b/tests/tcg/nios2/test-shadow-1.S
deleted file mode 100644
index 79ef69d..0000000
--- a/tests/tcg/nios2/test-shadow-1.S
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Regression test for TCG indirect global lowering.
- *
- * Copyright Linaro Ltd 2022
- * SPDX-License-Identifier: GPL-2.0-or-later
- */
-
-#include "semicall.h"
-
-	.text
-	.set noat
-	.align	2
-	.globl	main
-	.type	main, @function
-
-main:
-	/* Initialize r0 in shadow register set 1. */
-	movhi	at, 1			/* PRS=1, CRS=0, RSIE=0, PIE=0 */
-	wrctl	status, at
-	wrprs	zero, zero
-
-	/* Change current register set to 1. */
-	movi	at, 1 << 10		/* PRS=0, CRS=1, RSIE=0, PIE=0 */
-	wrctl	estatus, at
-	movia	ea, 1f
-	eret
-
-	/* Load address for callr, then end TB. */
-1:	movia	at, 3f
-	br	2f
-
-	/* Test case! TCG abort on indirect lowering across brcond. */
-2:	callr	at
-
-	/* exit(0) */
-3:	movi	r4, HOSTED_EXIT
-	movi	r5, 0
-	semihosting_call
-
-	.size	main, . - main