Merge "Adding qemu as a submodule of KVMFORNFV"

1 files changed, 0 insertions, 994 deletions

diff --git a/qemu/hw/arm/boot.c b/qemu/hw/arm/boot.c
deleted file mode 100644
index 587694557..000000000
--- a/qemu/hw/arm/boot.c
+++ /dev/null
@@ -1,994 +0,0 @@
-/*
- * ARM kernel loader.
- *
- * Copyright (c) 2006-2007 CodeSourcery.
- * Written by Paul Brook
- *
- * This code is licensed under the GPL.
- */
-
-#include "qemu/osdep.h"
-#include "qapi/error.h"
-#include "hw/hw.h"
-#include "hw/arm/arm.h"
-#include "hw/arm/linux-boot-if.h"
-#include "sysemu/kvm.h"
-#include "sysemu/sysemu.h"
-#include "hw/boards.h"
-#include "hw/loader.h"
-#include "elf.h"
-#include "sysemu/device_tree.h"
-#include "qemu/config-file.h"
-#include "exec/address-spaces.h"
-
-/* Kernel boot protocol is specified in the kernel docs
- * Documentation/arm/Booting and Documentation/arm64/booting.txt
- * They have different preferred image load offsets from system RAM base.
- */
-#define KERNEL_ARGS_ADDR 0x100
-#define KERNEL_LOAD_ADDR 0x00010000
-#define KERNEL64_LOAD_ADDR 0x00080000
-
-typedef enum {
-    FIXUP_NONE = 0,     /* do nothing */
-    FIXUP_TERMINATOR,   /* end of insns */
-    FIXUP_BOARDID,      /* overwrite with board ID number */
-    FIXUP_BOARD_SETUP,  /* overwrite with board specific setup code address */
-    FIXUP_ARGPTR,       /* overwrite with pointer to kernel args */
-    FIXUP_ENTRYPOINT,   /* overwrite with kernel entry point */
-    FIXUP_GIC_CPU_IF,   /* overwrite with GIC CPU interface address */
-    FIXUP_BOOTREG,      /* overwrite with boot register address */
-    FIXUP_DSB,          /* overwrite with correct DSB insn for cpu */
-    FIXUP_MAX,
-} FixupType;
-
-typedef struct ARMInsnFixup {
-    uint32_t insn;
-    FixupType fixup;
-} ARMInsnFixup;
-
-static const ARMInsnFixup bootloader_aarch64[] = {
-    { 0x580000c0 }, /* ldr x0, arg ; Load the lower 32-bits of DTB */
-    { 0xaa1f03e1 }, /* mov x1, xzr */
-    { 0xaa1f03e2 }, /* mov x2, xzr */
-    { 0xaa1f03e3 }, /* mov x3, xzr */
-    { 0x58000084 }, /* ldr x4, entry ; Load the lower 32-bits of kernel entry */
-    { 0xd61f0080 }, /* br x4      ; Jump to the kernel entry point */
-    { 0, FIXUP_ARGPTR }, /* arg: .word @DTB Lower 32-bits */
-    { 0 }, /* .word @DTB Higher 32-bits */
-    { 0, FIXUP_ENTRYPOINT }, /* entry: .word @Kernel Entry Lower 32-bits */
-    { 0 }, /* .word @Kernel Entry Higher 32-bits */
-    { 0, FIXUP_TERMINATOR }
-};
-
-/* A very small bootloader: call the board-setup code (if needed),
- * set r0-r2, then jump to the kernel.
- * If we're not calling boot setup code then we don't copy across
- * the first BOOTLOADER_NO_BOARD_SETUP_OFFSET insns in this array.
- */
-
-static const ARMInsnFixup bootloader[] = {
-    { 0xe28fe004 }, /* add     lr, pc, #4 */
-    { 0xe51ff004 }, /* ldr     pc, [pc, #-4] */
-    { 0, FIXUP_BOARD_SETUP },
-#define BOOTLOADER_NO_BOARD_SETUP_OFFSET 3
-    { 0xe3a00000 }, /* mov     r0, #0 */
-    { 0xe59f1004 }, /* ldr     r1, [pc, #4] */
-    { 0xe59f2004 }, /* ldr     r2, [pc, #4] */
-    { 0xe59ff004 }, /* ldr     pc, [pc, #4] */
-    { 0, FIXUP_BOARDID },
-    { 0, FIXUP_ARGPTR },
-    { 0, FIXUP_ENTRYPOINT },
-    { 0, FIXUP_TERMINATOR }
-};
-
-/* Handling for secondary CPU boot in a multicore system.
- * Unlike the uniprocessor/primary CPU boot, this is platform
- * dependent. The default code here is based on the secondary
- * CPU boot protocol used on realview/vexpress boards, with
- * some parameterisation to increase its flexibility.
- * QEMU platform models for which this code is not appropriate
- * should override write_secondary_boot and secondary_cpu_reset_hook
- * instead.
- *
- * This code enables the interrupt controllers for the secondary
- * CPUs and then puts all the secondary CPUs into a loop waiting
- * for an interprocessor interrupt and polling a configurable
- * location for the kernel secondary CPU entry point.
- */
-#define DSB_INSN 0xf57ff04f
-#define CP15_DSB_INSN 0xee070f9a /* mcr cp15, 0, r0, c7, c10, 4 */
-
-static const ARMInsnFixup smpboot[] = {
-    { 0xe59f2028 }, /* ldr r2, gic_cpu_if */
-    { 0xe59f0028 }, /* ldr r0, bootreg_addr */
-    { 0xe3a01001 }, /* mov r1, #1 */
-    { 0xe5821000 }, /* str r1, [r2] - set GICC_CTLR.Enable */
-    { 0xe3a010ff }, /* mov r1, #0xff */
-    { 0xe5821004 }, /* str r1, [r2, 4] - set GIC_PMR.Priority to 0xff */
-    { 0, FIXUP_DSB },   /* dsb */
-    { 0xe320f003 }, /* wfi */
-    { 0xe5901000 }, /* ldr     r1, [r0] */
-    { 0xe1110001 }, /* tst     r1, r1 */
-    { 0x0afffffb }, /* beq     <wfi> */
-    { 0xe12fff11 }, /* bx      r1 */
-    { 0, FIXUP_GIC_CPU_IF }, /* gic_cpu_if: .word 0x.... */
-    { 0, FIXUP_BOOTREG }, /* bootreg_addr: .word 0x.... */
-    { 0, FIXUP_TERMINATOR }
-};
-
-static void write_bootloader(const char *name, hwaddr addr,
-                             const ARMInsnFixup *insns, uint32_t *fixupcontext)
-{
-    /* Fix up the specified bootloader fragment and write it into
-     * guest memory using rom_add_blob_fixed(). fixupcontext is
-     * an array giving the values to write in for the fixup types
-     * which write a value into the code array.
-     */
-    int i, len;
-    uint32_t *code;
-
-    len = 0;
-    while (insns[len].fixup != FIXUP_TERMINATOR) {
-        len++;
-    }
-
-    code = g_new0(uint32_t, len);
-
-    for (i = 0; i < len; i++) {
-        uint32_t insn = insns[i].insn;
-        FixupType fixup = insns[i].fixup;
-
-        switch (fixup) {
-        case FIXUP_NONE:
-            break;
-        case FIXUP_BOARDID:
-        case FIXUP_BOARD_SETUP:
-        case FIXUP_ARGPTR:
-        case FIXUP_ENTRYPOINT:
-        case FIXUP_GIC_CPU_IF:
-        case FIXUP_BOOTREG:
-        case FIXUP_DSB:
-            insn = fixupcontext[fixup];
-            break;
-        default:
-            abort();
-        }
-        code[i] = tswap32(insn);
-    }
-
-    rom_add_blob_fixed(name, code, len * sizeof(uint32_t), addr);
-
-    g_free(code);
-}
-
-static void default_write_secondary(ARMCPU *cpu,
-                                    const struct arm_boot_info *info)
-{
-    uint32_t fixupcontext[FIXUP_MAX];
-
-    fixupcontext[FIXUP_GIC_CPU_IF] = info->gic_cpu_if_addr;
-    fixupcontext[FIXUP_BOOTREG] = info->smp_bootreg_addr;
-    if (arm_feature(&cpu->env, ARM_FEATURE_V7)) {
-        fixupcontext[FIXUP_DSB] = DSB_INSN;
-    } else {
-        fixupcontext[FIXUP_DSB] = CP15_DSB_INSN;
-    }
-
-    write_bootloader("smpboot", info->smp_loader_start,
-                     smpboot, fixupcontext);
-}
-
-void arm_write_secure_board_setup_dummy_smc(ARMCPU *cpu,
-                                            const struct arm_boot_info *info,
-                                            hwaddr mvbar_addr)
-{
-    int n;
-    uint32_t mvbar_blob[] = {
-        /* mvbar_addr: secure monitor vectors
-         * Default unimplemented and unused vectors to spin. Makes it
-         * easier to debug (as opposed to the CPU running away).
-         */
-        0xeafffffe, /* (spin) */
-        0xeafffffe, /* (spin) */
-        0xe1b0f00e, /* movs pc, lr ;SMC exception return */
-        0xeafffffe, /* (spin) */
-        0xeafffffe, /* (spin) */
-        0xeafffffe, /* (spin) */
-        0xeafffffe, /* (spin) */
-        0xeafffffe, /* (spin) */
-    };
-    uint32_t board_setup_blob[] = {
-        /* board setup addr */
-        0xe3a00e00 + (mvbar_addr >> 4), /* mov r0, #mvbar_addr */
-        0xee0c0f30, /* mcr     p15, 0, r0, c12, c0, 1 ;set MVBAR */
-        0xee110f11, /* mrc     p15, 0, r0, c1 , c1, 0 ;read SCR */
-        0xe3800031, /* orr     r0, #0x31              ;enable AW, FW, NS */
-        0xee010f11, /* mcr     p15, 0, r0, c1, c1, 0  ;write SCR */
-        0xe1a0100e, /* mov     r1, lr                 ;save LR across SMC */
-        0xe1600070, /* smc     #0                     ;call monitor to flush SCR */
-        0xe1a0f001, /* mov     pc, r1                 ;return */
-    };
-
-    /* check that mvbar_addr is correctly aligned and relocatable (using MOV) */
-    assert((mvbar_addr & 0x1f) == 0 && (mvbar_addr >> 4) < 0x100);
-
-    /* check that these blobs don't overlap */
-    assert((mvbar_addr + sizeof(mvbar_blob) <= info->board_setup_addr)
-          || (info->board_setup_addr + sizeof(board_setup_blob) <= mvbar_addr));
-
-    for (n = 0; n < ARRAY_SIZE(mvbar_blob); n++) {
-        mvbar_blob[n] = tswap32(mvbar_blob[n]);
-    }
-    rom_add_blob_fixed("board-setup-mvbar", mvbar_blob, sizeof(mvbar_blob),
-                       mvbar_addr);
-
-    for (n = 0; n < ARRAY_SIZE(board_setup_blob); n++) {
-        board_setup_blob[n] = tswap32(board_setup_blob[n]);
-    }
-    rom_add_blob_fixed("board-setup", board_setup_blob,
-                       sizeof(board_setup_blob), info->board_setup_addr);
-}
-
-static void default_reset_secondary(ARMCPU *cpu,
-                                    const struct arm_boot_info *info)
-{
-    CPUState *cs = CPU(cpu);
-
-    address_space_stl_notdirty(&address_space_memory, info->smp_bootreg_addr,
-                               0, MEMTXATTRS_UNSPECIFIED, NULL);
-    cpu_set_pc(cs, info->smp_loader_start);
-}
-
-static inline bool have_dtb(const struct arm_boot_info *info)
-{
-    return info->dtb_filename || info->get_dtb;
-}
-
-#define WRITE_WORD(p, value) do { \
-    address_space_stl_notdirty(&address_space_memory, p, value, \
-                               MEMTXATTRS_UNSPECIFIED, NULL);  \
-    p += 4;                       \
-} while (0)
-
-static void set_kernel_args(const struct arm_boot_info *info)
-{
-    int initrd_size = info->initrd_size;
-    hwaddr base = info->loader_start;
-    hwaddr p;
-
-    p = base + KERNEL_ARGS_ADDR;
-    /* ATAG_CORE */
-    WRITE_WORD(p, 5);
-    WRITE_WORD(p, 0x54410001);
-    WRITE_WORD(p, 1);
-    WRITE_WORD(p, 0x1000);
-    WRITE_WORD(p, 0);
-    /* ATAG_MEM */
-    /* TODO: handle multiple chips on one ATAG list */
-    WRITE_WORD(p, 4);
-    WRITE_WORD(p, 0x54410002);
-    WRITE_WORD(p, info->ram_size);
-    WRITE_WORD(p, info->loader_start);
-    if (initrd_size) {
-        /* ATAG_INITRD2 */
-        WRITE_WORD(p, 4);
-        WRITE_WORD(p, 0x54420005);
-        WRITE_WORD(p, info->initrd_start);
-        WRITE_WORD(p, initrd_size);
-    }
-    if (info->kernel_cmdline && *info->kernel_cmdline) {
-        /* ATAG_CMDLINE */
-        int cmdline_size;
-
-        cmdline_size = strlen(info->kernel_cmdline);
-        cpu_physical_memory_write(p + 8, info->kernel_cmdline,
-                                  cmdline_size + 1);
-        cmdline_size = (cmdline_size >> 2) + 1;
-        WRITE_WORD(p, cmdline_size + 2);
-        WRITE_WORD(p, 0x54410009);
-        p += cmdline_size * 4;
-    }
-    if (info->atag_board) {
-        /* ATAG_BOARD */
-        int atag_board_len;
-        uint8_t atag_board_buf[0x1000];
-
-        atag_board_len = (info->atag_board(info, atag_board_buf) + 3) & ~3;
-        WRITE_WORD(p, (atag_board_len + 8) >> 2);
-        WRITE_WORD(p, 0x414f4d50);
-        cpu_physical_memory_write(p, atag_board_buf, atag_board_len);
-        p += atag_board_len;
-    }
-    /* ATAG_END */
-    WRITE_WORD(p, 0);
-    WRITE_WORD(p, 0);
-}
-
-static void set_kernel_args_old(const struct arm_boot_info *info)
-{
-    hwaddr p;
-    const char *s;
-    int initrd_size = info->initrd_size;
-    hwaddr base = info->loader_start;
-
-    /* see linux/include/asm-arm/setup.h */
-    p = base + KERNEL_ARGS_ADDR;
-    /* page_size */
-    WRITE_WORD(p, 4096);
-    /* nr_pages */
-    WRITE_WORD(p, info->ram_size / 4096);
-    /* ramdisk_size */
-    WRITE_WORD(p, 0);
-#define FLAG_READONLY	1
-#define FLAG_RDLOAD	4
-#define FLAG_RDPROMPT	8
-    /* flags */
-    WRITE_WORD(p, FLAG_READONLY | FLAG_RDLOAD | FLAG_RDPROMPT);
-    /* rootdev */
-    WRITE_WORD(p, (31 << 8) | 0);	/* /dev/mtdblock0 */
-    /* video_num_cols */
-    WRITE_WORD(p, 0);
-    /* video_num_rows */
-    WRITE_WORD(p, 0);
-    /* video_x */
-    WRITE_WORD(p, 0);
-    /* video_y */
-    WRITE_WORD(p, 0);
-    /* memc_control_reg */
-    WRITE_WORD(p, 0);
-    /* unsigned char sounddefault */
-    /* unsigned char adfsdrives */
-    /* unsigned char bytes_per_char_h */
-    /* unsigned char bytes_per_char_v */
-    WRITE_WORD(p, 0);
-    /* pages_in_bank[4] */
-    WRITE_WORD(p, 0);
-    WRITE_WORD(p, 0);
-    WRITE_WORD(p, 0);
-    WRITE_WORD(p, 0);
-    /* pages_in_vram */
-    WRITE_WORD(p, 0);
-    /* initrd_start */
-    if (initrd_size) {
-        WRITE_WORD(p, info->initrd_start);
-    } else {
-        WRITE_WORD(p, 0);
-    }
-    /* initrd_size */
-    WRITE_WORD(p, initrd_size);
-    /* rd_start */
-    WRITE_WORD(p, 0);
-    /* system_rev */
-    WRITE_WORD(p, 0);
-    /* system_serial_low */
-    WRITE_WORD(p, 0);
-    /* system_serial_high */
-    WRITE_WORD(p, 0);
-    /* mem_fclk_21285 */
-    WRITE_WORD(p, 0);
-    /* zero unused fields */
-    while (p < base + KERNEL_ARGS_ADDR + 256 + 1024) {
-        WRITE_WORD(p, 0);
-    }
-    s = info->kernel_cmdline;
-    if (s) {
-        cpu_physical_memory_write(p, s, strlen(s) + 1);
-    } else {
-        WRITE_WORD(p, 0);
-    }
-}
-
-/**
- * load_dtb() - load a device tree binary image into memory
- * @addr:       the address to load the image at
- * @binfo:      struct describing the boot environment
- * @addr_limit: upper limit of the available memory area at @addr
- *
- * Load a device tree supplied by the machine or by the user  with the
- * '-dtb' command line option, and put it at offset @addr in target
- * memory.
- *
- * If @addr_limit contains a meaningful value (i.e., it is strictly greater
- * than @addr), the device tree is only loaded if its size does not exceed
- * the limit.
- *
- * Returns: the size of the device tree image on success,
- *          0 if the image size exceeds the limit,
- *          -1 on errors.
- *
- * Note: Must not be called unless have_dtb(binfo) is true.
- */
-static int load_dtb(hwaddr addr, const struct arm_boot_info *binfo,
-                    hwaddr addr_limit)
-{
-    void *fdt = NULL;
-    int size, rc;
-    uint32_t acells, scells;
-
-    if (binfo->dtb_filename) {
-        char *filename;
-        filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, binfo->dtb_filename);
-        if (!filename) {
-            fprintf(stderr, "Couldn't open dtb file %s\n", binfo->dtb_filename);
-            goto fail;
-        }
-
-        fdt = load_device_tree(filename, &size);
-        if (!fdt) {
-            fprintf(stderr, "Couldn't open dtb file %s\n", filename);
-            g_free(filename);
-            goto fail;
-        }
-        g_free(filename);
-    } else {
-        fdt = binfo->get_dtb(binfo, &size);
-        if (!fdt) {
-            fprintf(stderr, "Board was unable to create a dtb blob\n");
-            goto fail;
-        }
-    }
-
-    if (addr_limit > addr && size > (addr_limit - addr)) {
-        /* Installing the device tree blob at addr would exceed addr_limit.
-         * Whether this constitutes failure is up to the caller to decide,
-         * so just return 0 as size, i.e., no error.
-         */
-        g_free(fdt);
-        return 0;
-    }
-
-    acells = qemu_fdt_getprop_cell(fdt, "/", "#address-cells",
-                                   NULL, &error_fatal);
-    scells = qemu_fdt_getprop_cell(fdt, "/", "#size-cells",
-                                   NULL, &error_fatal);
-    if (acells == 0 || scells == 0) {
-        fprintf(stderr, "dtb file invalid (#address-cells or #size-cells 0)\n");
-        goto fail;
-    }
-
-    if (scells < 2 && binfo->ram_size >= (1ULL << 32)) {
-        /* This is user error so deserves a friendlier error message
-         * than the failure of setprop_sized_cells would provide
-         */
-        fprintf(stderr, "qemu: dtb file not compatible with "
-                "RAM size > 4GB\n");
-        goto fail;
-    }
-
-    rc = qemu_fdt_setprop_sized_cells(fdt, "/memory", "reg",
-                                      acells, binfo->loader_start,
-                                      scells, binfo->ram_size);
-    if (rc < 0) {
-        fprintf(stderr, "couldn't set /memory/reg\n");
-        goto fail;
-    }
-
-    if (binfo->kernel_cmdline && *binfo->kernel_cmdline) {
-        rc = qemu_fdt_setprop_string(fdt, "/chosen", "bootargs",
-                                     binfo->kernel_cmdline);
-        if (rc < 0) {
-            fprintf(stderr, "couldn't set /chosen/bootargs\n");
-            goto fail;
-        }
-    }
-
-    if (binfo->initrd_size) {
-        rc = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-start",
-                                   binfo->initrd_start);
-        if (rc < 0) {
-            fprintf(stderr, "couldn't set /chosen/linux,initrd-start\n");
-            goto fail;
-        }
-
-        rc = qemu_fdt_setprop_cell(fdt, "/chosen", "linux,initrd-end",
-                                   binfo->initrd_start + binfo->initrd_size);
-        if (rc < 0) {
-            fprintf(stderr, "couldn't set /chosen/linux,initrd-end\n");
-            goto fail;
-        }
-    }
-
-    if (binfo->modify_dtb) {
-        binfo->modify_dtb(binfo, fdt);
-    }
-
-    qemu_fdt_dumpdtb(fdt, size);
-
-    /* Put the DTB into the memory map as a ROM image: this will ensure
-     * the DTB is copied again upon reset, even if addr points into RAM.
-     */
-    rom_add_blob_fixed("dtb", fdt, size, addr);
-
-    g_free(fdt);
-
-    return size;
-
-fail:
-    g_free(fdt);
-    return -1;
-}
-
-static void do_cpu_reset(void *opaque)
-{
-    ARMCPU *cpu = opaque;
-    CPUState *cs = CPU(cpu);
-    CPUARMState *env = &cpu->env;
-    const struct arm_boot_info *info = env->boot_info;
-
-    cpu_reset(cs);
-    if (info) {
-        if (!info->is_linux) {
-            int i;
-            /* Jump to the entry point.  */
-            uint64_t entry = info->entry;
-
-            switch (info->endianness) {
-            case ARM_ENDIANNESS_LE:
-                env->cp15.sctlr_el[1] &= ~SCTLR_E0E;
-                for (i = 1; i < 4; ++i) {
-                    env->cp15.sctlr_el[i] &= ~SCTLR_EE;
-                }
-                env->uncached_cpsr &= ~CPSR_E;
-                break;
-            case ARM_ENDIANNESS_BE8:
-                env->cp15.sctlr_el[1] |= SCTLR_E0E;
-                for (i = 1; i < 4; ++i) {
-                    env->cp15.sctlr_el[i] |= SCTLR_EE;
-                }
-                env->uncached_cpsr |= CPSR_E;
-                break;
-            case ARM_ENDIANNESS_BE32:
-                env->cp15.sctlr_el[1] |= SCTLR_B;
-                break;
-            case ARM_ENDIANNESS_UNKNOWN:
-                break; /* Board's decision */
-            default:
-                g_assert_not_reached();
-            }
-
-            if (!env->aarch64) {
-                env->thumb = info->entry & 1;
-                entry &= 0xfffffffe;
-            }
-            cpu_set_pc(cs, entry);
-        } else {
-            /* If we are booting Linux then we need to check whether we are
-             * booting into secure or non-secure state and adjust the state
-             * accordingly.  Out of reset, ARM is defined to be in secure state
-             * (SCR.NS = 0), we change that here if non-secure boot has been
-             * requested.
-             */
-            if (arm_feature(env, ARM_FEATURE_EL3)) {
-                /* AArch64 is defined to come out of reset into EL3 if enabled.
-                 * If we are booting Linux then we need to adjust our EL as
-                 * Linux expects us to be in EL2 or EL1.  AArch32 resets into
-                 * SVC, which Linux expects, so no privilege/exception level to
-                 * adjust.
-                 */
-                if (env->aarch64) {
-                    env->cp15.scr_el3 |= SCR_RW;
-                    if (arm_feature(env, ARM_FEATURE_EL2)) {
-                        env->cp15.hcr_el2 |= HCR_RW;
-                        env->pstate = PSTATE_MODE_EL2h;
-                    } else {
-                        env->pstate = PSTATE_MODE_EL1h;
-                    }
-                }
-
-                /* Set to non-secure if not a secure boot */
-                if (!info->secure_boot &&
-                    (cs != first_cpu || !info->secure_board_setup)) {
-                    /* Linux expects non-secure state */
-                    env->cp15.scr_el3 |= SCR_NS;
-                }
-            }
-
-            if (cs == first_cpu) {
-                cpu_set_pc(cs, info->loader_start);
-
-                if (!have_dtb(info)) {
-                    if (old_param) {
-                        set_kernel_args_old(info);
-                    } else {
-                        set_kernel_args(info);
-                    }
-                }
-            } else {
-                info->secondary_cpu_reset_hook(cpu, info);
-            }
-        }
-    }
-}
-
-/**
- * load_image_to_fw_cfg() - Load an image file into an fw_cfg entry identified
- *                          by key.
- * @fw_cfg:         The firmware config instance to store the data in.
- * @size_key:       The firmware config key to store the size of the loaded
- *                  data under, with fw_cfg_add_i32().
- * @data_key:       The firmware config key to store the loaded data under,
- *                  with fw_cfg_add_bytes().
- * @image_name:     The name of the image file to load. If it is NULL, the
- *                  function returns without doing anything.
- * @try_decompress: Whether the image should be decompressed (gunzipped) before
- *                  adding it to fw_cfg. If decompression fails, the image is
- *                  loaded as-is.
- *
- * In case of failure, the function prints an error message to stderr and the
- * process exits with status 1.
- */
-static void load_image_to_fw_cfg(FWCfgState *fw_cfg, uint16_t size_key,
-                                 uint16_t data_key, const char *image_name,
-                                 bool try_decompress)
-{
-    size_t size = -1;
-    uint8_t *data;
-
-    if (image_name == NULL) {
-        return;
-    }
-
-    if (try_decompress) {
-        size = load_image_gzipped_buffer(image_name,
-                                         LOAD_IMAGE_MAX_GUNZIP_BYTES, &data);
-    }
-
-    if (size == (size_t)-1) {
-        gchar *contents;
-        gsize length;
-
-        if (!g_file_get_contents(image_name, &contents, &length, NULL)) {
-            fprintf(stderr, "failed to load \"%s\"\n", image_name);
-            exit(1);
-        }
-        size = length;
-        data = (uint8_t *)contents;
-    }
-
-    fw_cfg_add_i32(fw_cfg, size_key, size);
-    fw_cfg_add_bytes(fw_cfg, data_key, data, size);
-}
-
-static int do_arm_linux_init(Object *obj, void *opaque)
-{
-    if (object_dynamic_cast(obj, TYPE_ARM_LINUX_BOOT_IF)) {
-        ARMLinuxBootIf *albif = ARM_LINUX_BOOT_IF(obj);
-        ARMLinuxBootIfClass *albifc = ARM_LINUX_BOOT_IF_GET_CLASS(obj);
-        struct arm_boot_info *info = opaque;
-
-        if (albifc->arm_linux_init) {
-            albifc->arm_linux_init(albif, info->secure_boot);
-        }
-    }
-    return 0;
-}
-
-static uint64_t arm_load_elf(struct arm_boot_info *info, uint64_t *pentry,
-                             uint64_t *lowaddr, uint64_t *highaddr,
-                             int elf_machine)
-{
-    bool elf_is64;
-    union {
-        Elf32_Ehdr h32;
-        Elf64_Ehdr h64;
-    } elf_header;
-    int data_swab = 0;
-    bool big_endian;
-    uint64_t ret = -1;
-    Error *err = NULL;
-
-
-    load_elf_hdr(info->kernel_filename, &elf_header, &elf_is64, &err);
-    if (err) {
-        return ret;
-    }
-
-    if (elf_is64) {
-        big_endian = elf_header.h64.e_ident[EI_DATA] == ELFDATA2MSB;
-        info->endianness = big_endian ? ARM_ENDIANNESS_BE8
-                                      : ARM_ENDIANNESS_LE;
-    } else {
-        big_endian = elf_header.h32.e_ident[EI_DATA] == ELFDATA2MSB;
-        if (big_endian) {
-            if (bswap32(elf_header.h32.e_flags) & EF_ARM_BE8) {
-                info->endianness = ARM_ENDIANNESS_BE8;
-            } else {
-                info->endianness = ARM_ENDIANNESS_BE32;
-                /* In BE32, the CPU has a different view of the per-byte
-                 * address map than the rest of the system. BE32 ELF files
-                 * are organised such that they can be programmed through
-                 * the CPU's per-word byte-reversed view of the world. QEMU
-                 * however loads ELF files independently of the CPU. So
-                 * tell the ELF loader to byte reverse the data for us.
-                 */
-                data_swab = 2;
-            }
-        } else {
-            info->endianness = ARM_ENDIANNESS_LE;
-        }
-    }
-
-    ret = load_elf(info->kernel_filename, NULL, NULL,
-                   pentry, lowaddr, highaddr, big_endian, elf_machine,
-                   1, data_swab);
-    if (ret <= 0) {
-        /* The header loaded but the image didn't */
-        exit(1);
-    }
-
-    return ret;
-}
-
-static void arm_load_kernel_notify(Notifier *notifier, void *data)
-{
-    CPUState *cs;
-    int kernel_size;
-    int initrd_size;
-    int is_linux = 0;
-    uint64_t elf_entry, elf_low_addr, elf_high_addr;
-    int elf_machine;
-    hwaddr entry, kernel_load_offset;
-    static const ARMInsnFixup *primary_loader;
-    ArmLoadKernelNotifier *n = DO_UPCAST(ArmLoadKernelNotifier,
-                                         notifier, notifier);
-    ARMCPU *cpu = n->cpu;
-    struct arm_boot_info *info =
-        container_of(n, struct arm_boot_info, load_kernel_notifier);
-
-    /* The board code is not supposed to set secure_board_setup unless
-     * running its code in secure mode is actually possible, and KVM
-     * doesn't support secure.
-     */
-    assert(!(info->secure_board_setup && kvm_enabled()));
-
-    /* Load the kernel.  */
-    if (!info->kernel_filename || info->firmware_loaded) {
-
-        if (have_dtb(info)) {
-            /* If we have a device tree blob, but no kernel to supply it to (or
-             * the kernel is supposed to be loaded by the bootloader), copy the
-             * DTB to the base of RAM for the bootloader to pick up.
-             */
-            if (load_dtb(info->loader_start, info, 0) < 0) {
-                exit(1);
-            }
-        }
-
-        if (info->kernel_filename) {
-            FWCfgState *fw_cfg;
-            bool try_decompressing_kernel;
-
-            fw_cfg = fw_cfg_find();
-            try_decompressing_kernel = arm_feature(&cpu->env,
-                                                   ARM_FEATURE_AARCH64);
-
-            /* Expose the kernel, the command line, and the initrd in fw_cfg.
-             * We don't process them here at all, it's all left to the
-             * firmware.
-             */
-            load_image_to_fw_cfg(fw_cfg,
-                                 FW_CFG_KERNEL_SIZE, FW_CFG_KERNEL_DATA,
-                                 info->kernel_filename,
-                                 try_decompressing_kernel);
-            load_image_to_fw_cfg(fw_cfg,
-                                 FW_CFG_INITRD_SIZE, FW_CFG_INITRD_DATA,
-                                 info->initrd_filename, false);
-
-            if (info->kernel_cmdline) {
-                fw_cfg_add_i32(fw_cfg, FW_CFG_CMDLINE_SIZE,
-                               strlen(info->kernel_cmdline) + 1);
-                fw_cfg_add_string(fw_cfg, FW_CFG_CMDLINE_DATA,
-                                  info->kernel_cmdline);
-            }
-        }
-
-        /* We will start from address 0 (typically a boot ROM image) in the
-         * same way as hardware.
-         */
-        return;
-    }
-
-    if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64)) {
-        primary_loader = bootloader_aarch64;
-        kernel_load_offset = KERNEL64_LOAD_ADDR;
-        elf_machine = EM_AARCH64;
-    } else {
-        primary_loader = bootloader;
-        if (!info->write_board_setup) {
-            primary_loader += BOOTLOADER_NO_BOARD_SETUP_OFFSET;
-        }
-        kernel_load_offset = KERNEL_LOAD_ADDR;
-        elf_machine = EM_ARM;
-    }
-
-    info->dtb_filename = qemu_opt_get(qemu_get_machine_opts(), "dtb");
-
-    if (!info->secondary_cpu_reset_hook) {
-        info->secondary_cpu_reset_hook = default_reset_secondary;
-    }
-    if (!info->write_secondary_boot) {
-        info->write_secondary_boot = default_write_secondary;
-    }
-
-    if (info->nb_cpus == 0)
-        info->nb_cpus = 1;
-
-    /* We want to put the initrd far enough into RAM that when the
-     * kernel is uncompressed it will not clobber the initrd. However
-     * on boards without much RAM we must ensure that we still leave
-     * enough room for a decent sized initrd, and on boards with large
-     * amounts of RAM we must avoid the initrd being so far up in RAM
-     * that it is outside lowmem and inaccessible to the kernel.
-     * So for boards with less  than 256MB of RAM we put the initrd
-     * halfway into RAM, and for boards with 256MB of RAM or more we put
-     * the initrd at 128MB.
-     */
-    info->initrd_start = info->loader_start +
-        MIN(info->ram_size / 2, 128 * 1024 * 1024);
-
-    /* Assume that raw images are linux kernels, and ELF images are not.  */
-    kernel_size = arm_load_elf(info, &elf_entry, &elf_low_addr,
-                               &elf_high_addr, elf_machine);
-    if (kernel_size > 0 && have_dtb(info)) {
-        /* If there is still some room left at the base of RAM, try and put
-         * the DTB there like we do for images loaded with -bios or -pflash.
-         */
-        if (elf_low_addr > info->loader_start
-            || elf_high_addr < info->loader_start) {
-            /* Pass elf_low_addr as address limit to load_dtb if it may be
-             * pointing into RAM, otherwise pass '0' (no limit)
-             */
-            if (elf_low_addr < info->loader_start) {
-                elf_low_addr = 0;
-            }
-            if (load_dtb(info->loader_start, info, elf_low_addr) < 0) {
-                exit(1);
-            }
-        }
-    }
-    entry = elf_entry;
-    if (kernel_size < 0) {
-        kernel_size = load_uimage(info->kernel_filename, &entry, NULL,
-                                  &is_linux, NULL, NULL);
-    }
-    /* On aarch64, it's the bootloader's job to uncompress the kernel. */
-    if (arm_feature(&cpu->env, ARM_FEATURE_AARCH64) && kernel_size < 0) {
-        entry = info->loader_start + kernel_load_offset;
-        kernel_size = load_image_gzipped(info->kernel_filename, entry,
-                                         info->ram_size - kernel_load_offset);
-        is_linux = 1;
-    }
-    if (kernel_size < 0) {
-        entry = info->loader_start + kernel_load_offset;
-        kernel_size = load_image_targphys(info->kernel_filename, entry,
-                                          info->ram_size - kernel_load_offset);
-        is_linux = 1;
-    }
-    if (kernel_size < 0) {
-        fprintf(stderr, "qemu: could not load kernel '%s'\n",
-                info->kernel_filename);
-        exit(1);
-    }
-    info->entry = entry;
-    if (is_linux) {
-        uint32_t fixupcontext[FIXUP_MAX];
-
-        if (info->initrd_filename) {
-            initrd_size = load_ramdisk(info->initrd_filename,
-                                       info->initrd_start,
-                                       info->ram_size -
-                                       info->initrd_start);
-            if (initrd_size < 0) {
-                initrd_size = load_image_targphys(info->initrd_filename,
-                                                  info->initrd_start,
-                                                  info->ram_size -
-                                                  info->initrd_start);
-            }
-            if (initrd_size < 0) {
-                fprintf(stderr, "qemu: could not load initrd '%s'\n",
-                        info->initrd_filename);
-                exit(1);
-            }
-        } else {
-            initrd_size = 0;
-        }
-        info->initrd_size = initrd_size;
-
-        fixupcontext[FIXUP_BOARDID] = info->board_id;
-        fixupcontext[FIXUP_BOARD_SETUP] = info->board_setup_addr;
-
-        /* for device tree boot, we pass the DTB directly in r2. Otherwise
-         * we point to the kernel args.
-         */
-        if (have_dtb(info)) {
-            hwaddr align;
-            hwaddr dtb_start;
-
-            if (elf_machine == EM_AARCH64) {
-                /*
-                 * Some AArch64 kernels on early bootup map the fdt region as
-                 *
-                 *   [ ALIGN_DOWN(fdt, 2MB) ... ALIGN_DOWN(fdt, 2MB) + 2MB ]
-                 *
-                 * Let's play safe and prealign it to 2MB to give us some space.
-                 */
-                align = 2 * 1024 * 1024;
-            } else {
-                /*
-                 * Some 32bit kernels will trash anything in the 4K page the
-                 * initrd ends in, so make sure the DTB isn't caught up in that.
-                 */
-                align = 4096;
-            }
-
-            /* Place the DTB after the initrd in memory with alignment. */
-            dtb_start = QEMU_ALIGN_UP(info->initrd_start + initrd_size, align);
-            if (load_dtb(dtb_start, info, 0) < 0) {
-                exit(1);
-            }
-            fixupcontext[FIXUP_ARGPTR] = dtb_start;
-        } else {
-            fixupcontext[FIXUP_ARGPTR] = info->loader_start + KERNEL_ARGS_ADDR;
-            if (info->ram_size >= (1ULL << 32)) {
-                fprintf(stderr, "qemu: RAM size must be less than 4GB to boot"
-                        " Linux kernel using ATAGS (try passing a device tree"
-                        " using -dtb)\n");
-                exit(1);
-            }
-        }
-        fixupcontext[FIXUP_ENTRYPOINT] = entry;
-
-        write_bootloader("bootloader", info->loader_start,
-                         primary_loader, fixupcontext);
-
-        if (info->nb_cpus > 1) {
-            info->write_secondary_boot(cpu, info);
-        }
-        if (info->write_board_setup) {
-            info->write_board_setup(cpu, info);
-        }
-
-        /* Notify devices which need to fake up firmware initialization
-         * that we're doing a direct kernel boot.
-         */
-        object_child_foreach_recursive(object_get_root(),
-                                       do_arm_linux_init, info);
-    }
-    info->is_linux = is_linux;
-
-    for (cs = CPU(cpu); cs; cs = CPU_NEXT(cs)) {
-        ARM_CPU(cs)->env.boot_info = info;
-    }
-}
-
-void arm_load_kernel(ARMCPU *cpu, struct arm_boot_info *info)
-{
-    CPUState *cs;
-
-    info->load_kernel_notifier.cpu = cpu;
-    info->load_kernel_notifier.notifier.notify = arm_load_kernel_notify;
-    qemu_add_machine_init_done_notifier(&info->load_kernel_notifier.notifier);
-
-    /* CPU objects (unlike devices) are not automatically reset on system
-     * reset, so we must always register a handler to do so. If we're
-     * actually loading a kernel, the handler is also responsible for
-     * arranging that we start it correctly.
-     */
-    for (cs = CPU(cpu); cs; cs = CPU_NEXT(cs)) {
-        qemu_register_reset(do_cpu_reset, ARM_CPU(cs));
-    }
-}
-
-static const TypeInfo arm_linux_boot_if_info = {
-    .name = TYPE_ARM_LINUX_BOOT_IF,
-    .parent = TYPE_INTERFACE,
-    .class_size = sizeof(ARMLinuxBootIfClass),
-};
-
-static void arm_linux_boot_register_types(void)
-{
-    type_register_static(&arm_linux_boot_if_info);
-}
-
-type_init(arm_linux_boot_register_types)