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>

1 files changed, 0 insertions, 234 deletions

diff --git a/hw/nios2/boot.c b/hw/nios2/boot.c
deleted file mode 100644
index cd75803fc2..0000000000
--- a/hw/nios2/boot.c
+++ /dev/null
@@ -1,234 +0,0 @@
-/*
- * Nios2 kernel loader
- *
- * Copyright (c) 2016 Marek Vasut <marek.vasut@gmail.com>
- *
- * Based on microblaze kernel loader
- *
- * Copyright (c) 2012 Peter Crosthwaite <peter.crosthwaite@petalogix.com>
- * Copyright (c) 2012 PetaLogix
- * Copyright (c) 2009 Edgar E. Iglesias.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-#include "qemu/osdep.h"
-#include "qemu/units.h"
-#include "qemu/datadir.h"
-#include "qemu/option.h"
-#include "qemu/config-file.h"
-#include "qemu/error-report.h"
-#include "qemu/guest-random.h"
-#include "sysemu/device_tree.h"
-#include "sysemu/reset.h"
-#include "hw/boards.h"
-#include "hw/loader.h"
-#include "elf.h"
-
-#include "boot.h"
-
-#include <libfdt.h>
-
-#define NIOS2_MAGIC    0x534f494e
-
-static struct nios2_boot_info {
-    void (*machine_cpu_reset)(Nios2CPU *);
-    uint32_t bootstrap_pc;
-    uint32_t cmdline;
-    uint32_t initrd_start;
-    uint32_t initrd_end;
-    uint32_t fdt;
-} boot_info;
-
-static void main_cpu_reset(void *opaque)
-{
-    Nios2CPU *cpu = opaque;
-    CPUState *cs = CPU(cpu);
-    CPUNios2State *env = &cpu->env;
-
-    cpu_reset(CPU(cpu));
-
-    env->regs[R_ARG0] = NIOS2_MAGIC;
-    env->regs[R_ARG1] = boot_info.initrd_start;
-    env->regs[R_ARG2] = boot_info.fdt;
-    env->regs[R_ARG3] = boot_info.cmdline;
-
-    cpu_set_pc(cs, boot_info.bootstrap_pc);
-    if (boot_info.machine_cpu_reset) {
-        boot_info.machine_cpu_reset(cpu);
-    }
-}
-
-static uint64_t translate_kernel_address(void *opaque, uint64_t addr)
-{
-    return addr - 0xc0000000LL;
-}
-
-static int nios2_load_dtb(struct nios2_boot_info bi, const uint32_t ramsize,
-                          const char *kernel_cmdline, const char *dtb_filename)
-{
-    MachineState *machine = MACHINE(qdev_get_machine());
-    int fdt_size;
-    void *fdt = NULL;
-    int r;
-    uint8_t rng_seed[32];
-
-    if (dtb_filename) {
-        fdt = load_device_tree(dtb_filename, &fdt_size);
-    }
-    if (!fdt) {
-        return 0;
-    }
-
-    qemu_guest_getrandom_nofail(rng_seed, sizeof(rng_seed));
-    qemu_fdt_setprop(fdt, "/chosen", "rng-seed", rng_seed, sizeof(rng_seed));
-
-    if (kernel_cmdline) {
-        r = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs",
-                                    kernel_cmdline);
-        if (r < 0) {
-            fprintf(stderr, "couldn't set /chosen/bootargs\n");
-        }
-    }
-
-    if (bi.initrd_start) {
-        qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start",
-                              translate_kernel_address(NULL, bi.initrd_start));
-
-        qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end",
-                              translate_kernel_address(NULL, bi.initrd_end));
-    }
-
-    cpu_physical_memory_write(bi.fdt, fdt, fdt_size);
-
-    /* Set machine->fdt for 'dumpdtb' QMP/HMP command */
-    machine->fdt = fdt;
-
-    return fdt_size;
-}
-
-void nios2_load_kernel(Nios2CPU *cpu, hwaddr ddr_base,
-                            uint32_t ramsize,
-                            const char *initrd_filename,
-                            const char *dtb_filename,
-                            void (*machine_cpu_reset)(Nios2CPU *))
-{
-    const char *kernel_filename;
-    const char *kernel_cmdline;
-    const char *dtb_arg;
-    char *filename = NULL;
-
-    kernel_filename = current_machine->kernel_filename;
-    kernel_cmdline = current_machine->kernel_cmdline;
-    dtb_arg = current_machine->dtb;
-    /* default to pcbios dtb as passed by machine_init */
-    if (!dtb_arg) {
-        filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, dtb_filename);
-    }
-
-    boot_info.machine_cpu_reset = machine_cpu_reset;
-    qemu_register_reset(main_cpu_reset, cpu);
-
-    if (kernel_filename) {
-        int kernel_size, fdt_size;
-        uint64_t entry, high;
-
-        /* Boots a kernel elf binary. */
-        kernel_size = load_elf(kernel_filename, NULL, NULL, NULL,
-                               &entry, NULL, &high, NULL,
-                               TARGET_BIG_ENDIAN, EM_ALTERA_NIOS2, 0, 0);
-        if ((uint32_t)entry == 0xc0000000) {
-            /*
-             * The Nios II processor reference guide documents that the
-             * kernel is placed at virtual memory address 0xc0000000,
-             * and we've got something that points there.  Reload it
-             * and adjust the entry to get the address in physical RAM.
-             */
-            kernel_size = load_elf(kernel_filename, NULL,
-                                   translate_kernel_address, NULL,
-                                   &entry, NULL, NULL, NULL,
-                                   TARGET_BIG_ENDIAN, EM_ALTERA_NIOS2, 0, 0);
-            boot_info.bootstrap_pc = ddr_base + 0xc0000000 +
-                (entry & 0x07ffffff);
-        } else {
-            /* Use the entry point in the ELF image.  */
-            boot_info.bootstrap_pc = (uint32_t)entry;
-        }
-
-        /* If it wasn't an ELF image, try an u-boot image. */
-        if (kernel_size < 0) {
-            hwaddr uentry, loadaddr = LOAD_UIMAGE_LOADADDR_INVALID;
-
-            kernel_size = load_uimage(kernel_filename, &uentry, &loadaddr, 0,
-                                      NULL, NULL);
-            boot_info.bootstrap_pc = uentry;
-            high = loadaddr + kernel_size;
-        }
-
-        /* Not an ELF image nor an u-boot image, try a RAW image. */
-        if (kernel_size < 0) {
-            kernel_size = load_image_targphys(kernel_filename, ddr_base,
-                                              ramsize);
-            boot_info.bootstrap_pc = ddr_base;
-            high = ddr_base + kernel_size;
-        }
-
-        high = ROUND_UP(high, 1 * MiB);
-
-        /* If initrd is available, it goes after the kernel, aligned to 1M. */
-        if (initrd_filename) {
-            int initrd_size;
-            uint32_t initrd_offset;
-
-            boot_info.initrd_start = high;
-            initrd_offset = boot_info.initrd_start - ddr_base;
-
-            initrd_size = load_ramdisk(initrd_filename,
-                                       boot_info.initrd_start,
-                                       ramsize - initrd_offset);
-            if (initrd_size < 0) {
-                initrd_size = load_image_targphys(initrd_filename,
-                                                  boot_info.initrd_start,
-                                                  ramsize - initrd_offset);
-            }
-            if (initrd_size < 0) {
-                error_report("could not load initrd '%s'",
-                             initrd_filename);
-                exit(EXIT_FAILURE);
-            }
-            high += initrd_size;
-        }
-        high = ROUND_UP(high, 4);
-        boot_info.initrd_end = high;
-
-        /* Device tree must be placed right after initrd (if available) */
-        boot_info.fdt = high;
-        fdt_size = nios2_load_dtb(boot_info, ramsize, kernel_cmdline,
-                                  /* Preference a -dtb argument */
-                                  dtb_arg ? dtb_arg : filename);
-        high += fdt_size;
-
-        /* Kernel command is at the end, 4k aligned. */
-        boot_info.cmdline = ROUND_UP(high, 4 * KiB);
-        if (kernel_cmdline && strlen(kernel_cmdline)) {
-            pstrcpy_targphys("cmdline", boot_info.cmdline, 256, kernel_cmdline);
-        }
-    }
-    g_free(filename);
-}